Device for creating construction gauge measurement diagram, device for creating construction gauge measurement diagram data, and method for creating construction gauge measurement diagram

Distance measurement means measures a distance from a measurement point to a construction gauge in a route of a track. A range identification unit identifies whether or not a measurement point falls within a predetermined range from the construction gauge based on the measured distance. A ground feature identification unit identifies whether or not the measurement point is a measurement point of a feature on a ground. Drawing means draws in a plan view a measurement point identified as a measurement point of a feature on the ground by the ground feature identification unit among the measurement points, and draws in side views a measurement point identified as not a measurement point of a feature on the ground. The drawing means performs different drawing processes on a measurement point identified as falling within the predetermined range from the construction gauge among the measurement points and on a measurement point identified as not falling within the predetermined range from the construction gauge among the measurement points.

TECHNICAL FIELD

The present invention relates to a device for creating a construction gauge measurement diagram, a device for creating a construction gauge measurement diagram data, a method for creating a construction gauge measurement diagram, a construction gauge measurement diagram, and construction gauge measurement diagram data, and in particular, relates to a device for creating a construction gauge measurement diagram, a device for creating a construction gauge measurement diagram data, a method for creating a construction gauge measurement diagram, a construction gauge measurement diagram, and construction gauge measurement diagram data for easily grasping entry or approach of a structure to the construction gauge of a railway or a road.

BACKGROUND ART

For safe operation of railway trains and vehicles on a road, construction gauges beyond which a structure is not allowed to be installed are set with respect to the track or the road. In railway maintenance and inspection work, whether there is no structure within the construction gauge is checked and a distance to the structure approaching the construction gauge is measured. Specifically, position coordinates of the structure near the track are calculated by surveying by a laser scanner and the like or image measurement, and then, a distance from the construction gauge set over the track or a distance falling within the construction gauge is calculated. The obtained distance is represented in a table as a numeric value, and in addition to this, as methods of visual representation, there are a technique of plotting a shape of the construction gauge and a measurement point on the structure in a cross-sectional view of a cross section perpendicular to the track so as to represent (for example, Patent Document 1) and a technique of overlapping a reference region determined by the construction gauge with an object to be imaged within the construction gauge based on an image of a camera so as to display (for example, Patent Document 2).

PRIOR ART DOCUMENTS

Patent Documents

SUMMARY OF INVENTION

Problems to be Solved by the Invention

However, in the display of the construction gauge and the measurement point disclosed in Patent Document 1 described above, only the measurement results only on one cross section over the track are shown. For this reason, there have been problems that an enormous number of cross-sectional views are created for each cross section at a slight distance if the measurement results over a wide range such as the entire track are to be checked, and that all the cross-sectional views have to be viewed. In addition, there has been a problem that an enormous amount of space is required so as to present the measurement results in document.

In addition, in the display of the object to be imaged falling within the construction gauge disclosed in Patent Document 2 described above, the reference region and the object to be imaged falling within the reference region are drawn in the image with respect to the reference region set by the measurement area within the camera's field of view and the construction gauge. For this reason, there has been a problem that the image has to be reproduced from the start point of the track and the image has to be viewed to the end point if the measurement results over a wide range such as the entire track are to be checked. In addition, in the same way, there has been a problem that an image has to be printed for each position at a slight distance and that an enormous amount of space is required so as to present the measurement results in document.

The present invention has been made to solve the problems as described above, and an object thereof is to obtain a device for creating a construction gauge measurement diagram, a device for creating construction gauge measurement diagram data, a method for creating a construction gauge measurement diagram, a construction gauge measurement diagram, and construction gauge measurement diagram data for easily checking whether or not there is a structure approaching or entering the construction gauge over a wide range of the track.

Means for Solving the Problems

A device for creating a construction gauge measurement diagram according to one aspect of the present invention includes storage means, distance measurement means, identification means, and drawing means. The storage means stores a route of at least one track, a shape of a construction gauge, and coordinates of a plurality of measurement points. The distance measurement means measures a distance from each of the measurement points to the construction gauge in the route of the track. The identification means identifies each of attributes of the measurement points. The identification means includes a range identification unit, and a ground feature identification unit. The range identification unit identifies whether or not each of the measurement points falls within a predetermined range from the construction gauge based on a distance measured by the distance measurement device. The ground feature identification unit identifies whether or not each of measurement points at least identified by the range identification unit as falling within the predetermined range from the construction gauge is a feature on a ground among the measurement points. The drawing means draws in a plan view a measurement point identified as a measurement point of a feature on the ground by the ground feature identification unit among the measurement points, and draws in at least one side view at least part of measurement points identified as not a measurement point of a feature on the ground. The drawing means performs different drawing processes on a measurement point identified as falling within the predetermined range from the construction gauge by the range identification unit among the measurement points and a measurement point identified as not falling within the predetermined range from the construction gauge by the range identification unit among the measurement points.

A device for creating a construction gauge measurement diagram according to another aspect of the present invention includes storage means, distance measurement means, identification means, and drawing means. The storage means stores a route of at least one track, a shape of a construction gauge, and coordinates of a plurality of measurement points. The distance measurement means measures a distance from each of the measurement points to the construction gauge in the route of the track. The identification means identifies each of attributes of the measurement points. The identification means includes a range identification unit and a ground feature identification unit. The range identification unit identifies whether or not each of the measurement points falls within a predetermined range from the construction gauge based on a distance measured by the distance measurement device. The ground feature identification unit identifies whether or not each of measurement points at least identified by the range identification unit as falling within the predetermined range from the construction gauge is a feature on a ground among the measurement points. The drawing means draws the measurement points in a plan view. The drawing means performs different drawing processes on a measurement point identified as falling within the predetermined range from the construction gauge by the range identification unit among the measurement points and a measurement point identified as not falling within the predetermined range from the construction gauge by the range identification unit among the measurement points. The drawing means draws, by using different symbols, a measurement point identified as a measurement point of a feature on the ground by the ground feature identification unit among the measurement points, and a measurement point identified as not a measurement point of a feature on the ground by the ground feature identification unit among the measurement points.

A device for creating a construction gauge measurement diagram according to still another aspect of the present invention includes storage means, distance measurement means, identification means, and drawing means. The storage means stores a route of at least one track passing through a tunnel, a shape of a construction gauge, coordinates of a plurality of measurement points, and a cross-sectional shape of the tunnel. The distance measurement means measures the distance from each of the measurement points to the construction gauge in the route of the track. The identification means identifies each of attributes of the measurement points. The identification means includes a range identification unit and a ground feature identification unit. The range identification unit identifies whether or not each of the measurement points falls within a predetermined range from the construction gauge based on a distance measured by the distance measurement means. The ground feature identification unit identifies whether or not each of measurement points at least identified by the range identification unit as falling within the predetermined range from the construction gauge is a measurement point of a feature on the ground among the measurement points. The drawing means draws the measurement points. The drawing means draws in the plan view a measurement point identified as a measurement point of a feature on the ground by the ground feature identification unit among the measurement points, and draw in a development view a measurement point identified as not a measurement point of a feature on the ground. The drawing means performs different drawing processes on a measurement point identified as falling within the predetermined range from the construction gauge by the range identification unit among the measurement points and a measurement point identified as not falling within the predetermined range from the construction gauge by the range identification unit among the measurement points.

A device for creating construction gauge measurement diagram data of the present invention includes storage means, distance measurement means, identification means, and data creation means. The storage means stores a route of at least one track, a shape of a construction gauge, and coordinates of a plurality of measurement points. The distance measurement means measures a distance from each of the measurement points to the construction gauge in the route of the track. The identification means identifies each of attributes of the measurement points. The identification means includes a range identification unit and a ground feature identification unit. The range identification unit identifies whether or not each of the measurement points falls within a predetermined range from the construction gauge based on a distance measured by the distance measurement means. The ground feature identification unit identifies whether or not each of measurement points at least identified by the range identification unit as falling within the predetermined range from the construction gauge is a measurement point of a feature on the ground among the measurement points. The data creation means creates plan view data including coordinate values for drawing in a plan view a measurement point identified as a measurement point of the feature on the ground by the ground feature identification unit among the measurement points, and the side view data including the coordinate values for drawing in at least one side view at least part of the measurement points identified as not the measurement point of the feature on the ground.

A method for creating a construction gauge measurement diagram according to one aspect of the present invention is based on a route of at least one track, a shape of the construction gauge, and coordinates of a plurality of measurement points, and the method includes the following steps. The distance from each of the measurement points to the construction gauge in the route of the track is measured. Each of the attributes of the measurement points is identified. The step of identifying the attributes includes a step of identifying whether or not each of the measurement points falls within a predetermined range from the construction gauge based on the measured distance, and a step of identifying by the range identification unit whether or not each of measurement points at least identified as falling within a predetermined range from the construction gauge is a measurement point of a feature on a ground among the measurement points. A measurement point identified as a measurement point of a feature on the ground among the measurement points is drawn in a plan view, and at least part of the measurement points identified as not a measurement point of a feature on the ground are drawn in at least one side view. Different drawing processes are performed on a measurement point identified as falling within the predetermined range from the construction gauge among the measurement points and on a measurement point identified as not falling within the predetermined range from the construction gauge among the measurement points.

A method for creating a construction gauge measurement diagram according to another aspect of the present invention is based on a route of at least one track, a shape of the construction gauge, and coordinates of a plurality of measurement points, and the method includes the following steps. The distance from each of the measurement points to the construction gauge in the route of the track is measured. Each of the attributes of the measurement points is identified. The step of identifying the attributes includes a step of identifying whether or not each of the measurement points falls within a predetermined range from the construction gauge based on the measured distance, and a step of identifying whether or not each of the measurement points at least identified as falling within the predetermined range from the construction gauge is a measurement point of a feature on a ground among the measurement points. In terms of a measurement point identified as falling within the predetermined range from the construction gauge among the measurement points, plan view data including coordinate values for drawing in a plan view a measurement point identified as a measurement point of a feature on the ground among the measurement points, and side view data including coordinate values for drawing in at least one side view at least part of measurement points identified as not a measurement point of a feature on the ground are created.

A construction gauge measurement diagram according to one aspect of the present invention is obtained by drawing a plurality of measurement points falling within a predetermined range from the construction gauge. The construction gauge measurement diagram includes a side view and a plan view. One part of the measurement points are drawn in the side view. Another part of the measurement points which are of features on the ground are drawn in the plan view.

A construction gauge measurement diagram according to another aspect of the present invention is obtained by drawing a plurality of measurement points falling within a predetermined range from the construction gauge, and the plurality of measurement points include a measurement point of a feature on the ground and a measurement point that is not a measurement point of a feature on the ground. The construction gauge measurement diagram includes a drawing of a symbol representing a measurement point of a feature on the ground among the plurality of measurement points, and a drawing of a symbol representing a measurement point not of a feature on the ground among the plurality of measurement points. The symbol representing the feature on the ground among the plurality of measurement points and the symbol representing the measurement point not of the feature on the ground among the plurality of measurement points are different from each other.

Construction gauge measurement diagram data of the present invention includes data of coordinate values for drawing each of a plurality of measurement points falling within a predetermined range from a construction gauge, and data corresponding to a distance from each of the measurement points to the construction gauge.

Effects of the Invention

According to the present invention, there can be obtained the construction gauge measurement diagram capable of condensedly displaying the measurement point while maintaining particularly useful information for identifying on-site the position of the feature corresponding to the measurement point entering or approaching the construction gauge.

The objects, features, aspects, and advantages of the present invention will be more apparent by the following detailed description and the accompanying drawings.

DESCRIPTION OF EMBODIMENTS

In the following, embodiments of the present invention will be described with reference to the drawings. It should be noted that in the following drawings, the same or corresponding portions will be denoted by the same reference numerals, and the descriptions thereof will not be repeated.

Summary of Device for Creating Construction Gauge Measurement Diagram

FIG. 1is a block diagram illustrating a device for creating a construction gauge measurement diagram according to the present embodiment. The creating device includes a storage device1(storage means), a distance measurement device2(distance measurement means), an identification device3(identification means), and a drawing device4(drawing means).

The storage device1can store information representing a route of a track, a shape of a construction gauge, and coordinates of a plurality of measurement points. These pieces of information may be input from an input unit (not shown) of the creating device. Although in the following, these data will be described as being already stored in the storage device1, it is sufficient that these data are stored when the device is used.

The distance measurement device2measures the distance from each of the measurement points to the construction gauge in the route of the track. Specifically, the distance measurement device2obtains the nearest point from the measurement point to the construction gauge by using the information stored in the storage device1, and measures the distance from the measurement point to the nearest point. It should be noted that the “measurement” by the distance measurement device2may be paraphrased as “calculation”, and rather than the on-site work where the measurement points exist, the “measurement” is associated with the operation of the information previously obtained by the work.

The identification device3includes a range identification unit3a, a ground feature identification unit3b, and a left-right identification unit3cso as to identify the attributes of each measurement point. The range identification unit3aidentifies whether or not each measurement point falls within a predetermined range from the construction gauge based on the distance measured by the distance measurement device2. The ground feature identification unit3bidentifies whether or not each of the measurement points at least identified by the range identification unit3aas falling within the predetermined range from the construction gauge is a feature on the ground among the measurement points. In this way, the identification device3identifies whether the measurement point falls within the predetermined range from the construction gauge, in other words, whether each measurement point approaches or enters the construction gauge depending on the above-mentioned distance, and identifies whether the measurement point is a feature on the ground. In addition, in the present embodiment, regarding at least part of the measurement points, the left-right identification unit3cof the identification device3identifies whether they are located on one of the left and right sides of the track.

The drawing device4draws at least part of the measurement points. Specifically, the drawing device4draws in the plan view the measurement points identified as the features on the ground by the ground feature identification unit3bamong the measurement points. In addition, the drawing device4draws at least part of the measurement points identified not to be features on the ground by the ground feature identification unit3bamong the measurement points in at least one of the side views. In the present embodiment, the drawing device4draws the measurement points identified not to be features on the ground by the ground feature identification unit3bamong the measurement points in one of the left side view and the right side view depending on the identification result of the left-right identification unit3c. The drawing device4performs different drawing processes on the measurement points identified as falling within the predetermined range from the construction gauge by the range identification unit3aamong the measurement points and the measurement points identified as not falling within the predetermined range from the construction gauge by the range identification unit3aamong the measurement points. The details of the drawing processes will be described below.

FIG. 2is an explanatory diagram illustrating an example of a track12, a construction gauge9, and a measurement point10. Hereinafter, the track12will be described as referring to the path center between rails8. The construction gauge9is set on a plane perpendicular to the track12at each point on the track12, and a range31of the construction gauge is obtained by sweeping this along the track12. The measurement point10is a point where three-dimensional coordinates of a feature such as a structure, a building, a tree, or a landform are measured. Identification as to whether the measurement point10approaches or enters the range31of the construction gauge is identified depending on the distance between the measurement point10and the construction gauge9in a plane11perpendicular to the track12and passing through the measurement point10and depending on whether or not the measurement point10is located within the construction gauge9. Specifically, when the measurement point10is on the outside of the construction gauge9, whether or not the measurement point10and the construction gauge9approach each other is identified depending on the distance between the measurement point10and the construction gauge9.

The measurement point10has a three-dimensional coordinate value of (x, y, z). The number of measurement points10is set to be K, and the coordinates of the k-th measurement point Pkis set to be (xk, yk, zk). InFIG. 2, examples of the acquirable measurement points are shown as a background, in addition to one measurement point Pk. The x, y, and z may be, for example, a plane rectangular coordinate system, or may be, for example, a coordinate system taking x as eastward, y as northward, and z as vertically upward with an arbitrary point set as an origin. The coordinates may be set in units of meters, for example. Hereinafter, x, y, and z will be described as right-handed system, and the z-axis will be described as vertically upward. Measurement point data7of the measurement point10is, for example, stored in the storage device1in the form as shown inFIG. 3.

The measurement points10is, for example, measured by the mobile mapping system being a three-dimensional shape measurement system that acquires three-dimensional shape of the surrounding target space. The mobile mapping system acquires the coordinate values of the surrounding features as point cloud data. The mobile mapping system is mounted on a mobile body such as a vehicle. The mobile mapping system includes a positioning device such as a GPS (Global Positioning System) device, an inertial navigation device such as a gyroscope, and an odometer device for calculating the movement distance from the vehicle speed pulse, and includes a laser scanner. The displacement from the own vehicle to the object is measured by the laser scanner while the position and the posture of the own vehicle is accurately measured by the GPS and the inertial navigation system, whereby the three-dimensional coordinates of the location irradiated by the laser pulse are acquired. The laser scanner sequentially irradiates the location while rotating the irradiation direction of the laser pulses being the distance measurement direction in the rotation plane. A point cloud in one plane is obtained by the rotation of one period, and the vehicle further proceeds, whereby detailed point cloud data is acquired over the target space.

It should be noted that the measurement method of the measurement point is not limited to those by the mobile mapping system described above, and may be performed by using another measurement device, for example, a surveying device such as a stationary laser scanner or a total station, or by using the image measurement.

The track12is represented as a connection of the point sequence Qi(Xi, Yi, Zi) where i=1, 2, . . . , N of three-dimensional continuous points44on a path center. Track data5is stored in the storage device1, for example, in the form as shown inFIG. 4.

The shape of the construction gauge9(FIG. 5) is defined in the plane11perpendicular to the track12(FIG. 2). Assuming that the track12(path center) is taken as the origin, a u-axis is taken along a rail surface13connecting the left and right rail top faces in a cross-sectional direction, and a v-axis is taken vertically upward, the shape of the construction gauge9is represented as a closed shape sequentially connecting the point sequence Rj(Uj, Vj) (j=1, 2, . . . , M) of a vertex43with line segments. The construction gauge9is swept along the track12, whereby the range31(FIG. 2) of the construction gauge over the track12is formed. The construction gauge9in the railway field is intended to provide a margin so that a traveling train14does not collide against the surrounding structure. Construction gauge data6is stored in the storage device1, for example, in the form as shown inFIG. 6.

It should be noted that the uv plane perpendicular to the track12takes the u-axis rightward and the v-axis upward as seen in a direction of a mileage. That is, the direction of the mileage of the track12(outbound direction) is set as a reference in the setting of the coordinate axes. Hereinafter, the right side and the left side represent those in the case where the direction of the mileage is set as frontward.

(Function of Distance Measurement Device)

As shown inFIG. 7, the distance measurement device2included in the device for creating a construction gauge measurement diagram (FIG. 1) obtains (u, v) coordinates and calculates the distance to the construction gauge9for each measurement point10. First, the plane11and the uv coordinate system for being compared with the construction gauge9are set for a measurement point10. The plane11is a plane including a measurement point10and being perpendicular to the track12. As a specific determination method of the plane11, a track nearest point15giving the shortest distance from the measurement point10to the track12is obtained, and a plane passing through the track nearest point15and being perpendicular to the track12is obtained as the plane11. The track nearest point15is obtained as a point giving the shortest distance to the measurement point Pkin the continuous line segments connecting the point sequence Qi. The normal vector n of the plane11is a vector for indicating the direction of the track12at the track nearest point15and, for example, can be obtained as n=(Xi+1−Xi, Yi+1−Yi, Zi+1−Zi) when the track nearest point15is located between the Qi(Xi, Yi, Zi) and Qi+1(Xi+1, Yi+1, Zi+1).

Subsequently, the coordinates (xk, yk, zk) of the measurement point Pkis converted to the coordinates of the uv coordinate system where the track (path center)12is taken as the origin in the plane11. First, the unit vector euin the u-axis direction is calculated. The unit vector euis a vector having the same direction as the direction of the vector product of the normal vector n and the vertical upward vector, and having the size of 1. That is, eu=n×(0, 0, 1)/{|n×(0, 0, 1)|}. The unit vector evin the v-axis direction is a vector having the same direction as the direction of the vector product of the unit vector euand the normal vector n, and having the size of 1. That is, ev=eu×n/{|eu×n|}.

As a result, if the track nearest point15with respect to the measurement point Pkis represented as Q′k(X′k, Y′k, Z′k), the coordinates (uk, vk) of the measurement point Pkin the uv coordinate system are obtained as uk=(xk−X′k, yk−Y′k, zk−Z′k)·eu, and vk=(xk−X′k, yk−Y′k, zk−Z′k)·ev.

In addition, the mileage of the track nearest point15is set as a mileage Skof the measurement point Pk. This is the length from the start point along the track12of the track nearest point15. The value may be obtained by the integration of the distance from the start point of the track12, for example, Qi, or may be obtained by the interpolation from the points at the front and rear of the track nearest point15when the mileage is previously defined in the point Qi.

Subsequently, as shown inFIG. 8, the distance between the measurement point10and the construction gauge9is calculated in the uv coordinate system. Specifically, a nearest point16, which gives the shortest distance to the measurement point10, of the construction gauge9is obtained, and the distance D from the measurement point10to the nearest point16is obtained. The distance for the measurement point Pkis set as the distance Dkof the measurement point Pkto the construction gauge9. However, here, when the measurement point10enters the inside of the construction gauge9as in the measurement point Pk′shown inFIG. 8, the distance Dk′is set as 0, or the sign is represented as negative.

(Function of Identification Device)

The identification device3(FIG. 1) performs the identification on each measurement point10by using the distance D from the measurement point10to the construction gauge9and using the nearest point16described above.

The range identification unit3aidentifies whether or not each measurement point10has entered or approached the construction gauge9. Specifically, the measurement point Pkis identified to be located in the construction gauge9when the distance Dkof the measurement point Pkis 0 or negative. That is, the measurement point Pkis identified to have entered the construction gauge9. When the distance Dkis positive, if the distance Dkis a predetermined value D0or less, the range identification unit3aidentifies that the measurement point Pkapproaches the construction gauge9. The value D0may be set for the management of the track12, and is, for example, about 0.1 m. When the distance Dkexceeds the value D0, the range identification unit3aidentifies that the measurement point Pkneither enters nor approaches the construction gauge9. In other words, the range identification unit3aidentifies that the measurement point Pkis not within the predetermined range, maintains a sufficient distance from the construction gauge9, and therefore does not affect the train traveling.

The ground feature identification unit3bidentifies whether the measurement point entering or approaching the construction gauge9among the measurement points10is a measurement point where the feature on the ground is measured, or is an other measurement point. This other measurement point is typically that of the feature located along the track12. This identification is for determining which of the plan view or the side view the measurement point approaching or entering the construction gauge9is to be drawn on. The plan view is considered to represent the state where the feature on the ground approaches or enters the base part of the construction gauge9, and the side view is considered to represent the state where the feature along the track12approaches or enters the side part of the construction gauge9.

With reference toFIG. 9, the ground feature identification unit3bidentifies, for example, among the measurement points, the measurement point whose nearest point16is on a base17of the construction gauge9as a measurement point51of a feature29on the ground (FIG. 12). The base17is a portion facing parallel to the rail surface13at the bottom of the construction gauge9. The approach or the entry to the construction gauge9of the feature29on the ground usually occurs toward the base17of the construction gauge9, and therefore the measurement point has the nearest point16at the base17of the construction gauge9. On the other hand, the approach or the entry to the construction gauge9of a feature30such as a signal or a fence installed along the track12usually occurs toward the side of the construction gauge9, and therefore the measurement point does not have the nearest point at the base17of the construction gauge9. According to this identification method, the identification as to whether or not the measurement point is of the feature on the ground can be performed depending on the shape of the construction gauge9. For example, the measurement point Pais identified as the measurement point51of a feature on the ground because its nearest point Hais on the base17. On the other hand, the measurement points Pband Pcare identified as not the measurement points51of the feature on the ground because their nearest points Hband Hcare not on the base17.

The left-right identification unit3c(FIG. 1) identifies which of the left side and the right side of the track12the measurement point that has been identified as not the feature on the ground in the above is located on. Specifically, depending on the sign of the coordinate ukof the measurement point Pk, the identification is made that if uk>0, the measurement point Pkis on the right side of the track12, and otherwise, on the left side of the track12. It should be noted that the identification of the left and the right may be performed based on, instead of the coordinates of the measurement point Pk, the coordinates of its nearest point Hk. In this case, the measurement point Pbis identified as a measurement point52on the right side of the track because the u coordinate value of the nearest point Hb, of the measurement point Pbis positive, and the measurement point Pcis identified as a measurement point53on the left side of the track because the u coordinate value of the nearest point Hcof the measurement point Pcis negative.

FIG. 10is an explanatory diagram illustrating the operation of the drawing device4(FIG. 1).FIG. 11is an explanatory diagram illustrating the configuration of a construction gauge measurement diagram24drawn by the drawing device4. The drawing device4draws the measurement points identified to be on the ground, on the left side of the track, and on the right side of the track, respectively, in a plan view18, a left side view19, and a right side view20, as the construction gauge measurement diagram24.

As shown inFIG. 10, the drawing device4projects the measurement point10of the feature of the ground onto a point25on a horizontal projection surface21, and the other measurement points10onto a point26of a left projection surface22along the track12or onto a point27of a right projection surface23along the track12, respectively, in accordance with the left or the right. The pattern projected onto this horizontal projection surface21is set as the plan view18, and the patterns projected onto the left projection surface22and the right projection surface23are respectively set as the left side view19and the right side view20, whereby the situations of the approach or the entry to the construction gauge9of the measurement point10are represented.

Preferably, in the plan view18, the mileage of the route of the track12is taken as the horizontal axis right direction, and the direction leftward perpendicular to the route of the track12is taken as the vertical axis upward direction. In addition, in the left side view19, the mileage of the route of the track12is taken as the horizontal axis right direction, and the height direction is taken as the vertical axis upward direction. In addition, in the right side view20, the mileage of the route of the track12is taken as the horizontal axis right direction, and the height direction is taken as the vertical axis downward direction.

In other words, in the plan view18, the vertical axis indicates u in a downward direction, and the horizontal axis indicates the mileage s. In the left side view19, the vertical axis indicates the height v in an upward direction, and the horizontal axis indicates the mileage s. In the right side view20, the vertical axis indicates the height v in a downward direction, and the horizontal axis indicates the mileage s. Each horizontal axis is arranged so that the same position in the horizontal direction represents the same mileage. With this arrangement, when the left side view19, the plan view18, and the right side view20(FIG. 11) are arranged in order from the top, the left projection surface22, the horizontal projection surface21, and the right projection surface23(FIG. 10) corresponding to the respective views are formed such that the views are developed continuously, and therefore the understanding of the construction gauge measurement diagram becomes easier.

It should be noted that the linear portion of the track12is described inFIGS. 10 and 11, and the curved portion of the track12is also drawn in the same way so that the horizontal axis indicates the mileage. In addition, for example, when the construction gauge measurement diagram is represented in document, the scale of the horizontal axis set as the mileage is set in accordance with the amount of the space allowed to be used for the construction gauge measurement diagram so that all of the measurement range of the track12fits in the limited space.

The drawing device4refers to the identification result of the measurement point10by the identification device3(FIG. 1), and draws a point or a predetermined figure at the point25(Sk, uk) of the plan view18if the measurement point10is a measurement point on the ground. In addition, when the measurement point10is not a measurement point on the ground, the drawing device4draws by using a point or a predetermined figure at the point26(Sk, vk) of the left side view19if the measurement point10is on the left side of the track, and at the point27(Sk, vk) of the right side view20if the measurement point10is on the right side of the track.

As the types of the drawing process, firstly, there are types of the measurement point10being treated as display data, or as non-display data. In the present embodiment, the measurement point10neither entering nor approaching the construction gauge9, that is, the measurement point10not falling within a predetermined range from the construction gauge9is treated as non-display data. On the other hand, if the measurement point is treated as display data, as the types of the method (form) of the drawing process, there are types of symbols in drawing. The types of symbols can be distinguished depending on the shape, the pattern, or the color. The shape of the symbol is typically a point or a figure as described above, and the figure may be a mark. When the construction gauge measurement diagram is drawn in the ordinary display, the shape of the symbol is constituted by the pixel as a unit. The selection of the types of symbols can be based on whether or not the measurement point10has entered the construction gauge9, the distance between the construction gauge9and the measurement point10, and the like. For example, the measurement point10located inside the construction gauge9is drawn in red to indicate warning, drawn largely, or drawn in a deep color. In addition, for example, among the measurement points Pkapproaching the construction gauge9, the measurement point Pkwith a particularly small distance Dkis drawn with a yellow symbol so as to draw attention, and the measurement point Pkwith a distance Dkkept large is drawn with a small symbol having a pale color. The color of drawing may be allowed to smoothly transition depending on the distance Dk. In addition, in drawing a plurality of measurement points, when there is an overlap in the position of drawing the symbol, a symbol to be displayed in the front may be selected in accordance with a predetermined rule. For example, as the distance Dkis smaller, the measurement point may be drawn in the front so as not to be hidden by the other measurement points. As described above, the drawing device4makes the types of drawing process for drawing the measurement point different depending on the identification result of the identification device3.

The value D0for determining the range in which the measurement point is identified to approach the construction gauge9is not so large in general as compared with the size of the construction gauge9itself. For this reason, as shown inFIG. 12, a range28of the measurement point10to be the drawing object to the construction gauge measurement diagram24is limited to the inside of the predetermined range28along the outer edge of the construction gauge9. In the present embodiment, the measurement point falling within this range28is drawn by being divided into the plan view18, the left side view19, and the right side view20.

In the plan view18, the measurement point of the feature29on the ground is drawn. The feature29on the ground such as equipment installed on the ground, such as a ground coil of the automatic train stop device, approaches or enters the construction gauge9when its height is about the height of the rail surface13. The position of the feature29on the ground can be suitably shown by the position on the horizontal plane, that is, by the mileage along the track12and the position in the left and right directions of the track12. This is because it is possible to easily identify the corresponding sections on-site if the positions are known. Therefore, the plan view18having the respective axes corresponding to s representing the mileage and u representing the position in the left and right direction is used, whereby the position of the feature29on the ground approaching or entering the construction gauge9can be suitably represented.

Here, the rails8constitute the rail surface13, and therefore when the rail surface13and the lower side of the construction gauge9match, the rails8are to approach the construction gauge9. The plan view18inFIG. 11reflects this. That is, in the plan view18, points are drawn in a region54extending in the horizontal direction corresponding to the rails8, andFIG. 11schematically represents the situations by using the hatching. In the plan view18, the measurement point of the approaching feature29on the ground (FIG. 12) is drawn in addition to the rails8.

On the other hand, in the left side view19and the right side view20(FIG. 11), other measurement points other than the feature29on the ground (FIG. 12), typically, the measurement points of the feature30(FIG. 12) installed along the track is drawn. The feature30such as the equipment installed along the track, for example, a signal, a sign, supports of these, or a fence is drawn. These features approach or enter the construction gauge9when these features excessively approach the side of the track12. The feature30installed along the track can be suitably shown by the position along the track12(mileage), the height position of the portion approaching or entering the construction gauge9, and the distinction of which of the left side and the right side of the track the feature is located on. This is because it is possible to easily identify the corresponding sections on-site if the positions are known. Therefore, by the representation of the left and right side views with the axes of s representing the mileage and v representing the height, the situations of the approach or the entry to the construction gauge9of the feature30installed along the track12can be suitably represented.

Regions57and58near the center of the left side view19(FIG. 11) schematically show the situations where the measurement point of the feature30installed along the track12(FIG. 12) is drawn by using the hatching. The point corresponding to a support55approaching the construction gauge9is drawn in the region57extending longitudinally, and the measurement point of installation equipment56falling within the construction gauge9overlaps on top of the region57as the region58. In addition, the left side view19and the right side view20are views in which the measurement point of the other features30, installed along the track12, entering or approaching the construction gauge9is drawn.

In addition, in the railway field, a limit that must not be exceeded is set in not only the track12but also the vehicle as a loading gauge40(FIG. 12). The construction gauge9is set outside the loading gauge40with a margin of space. The feature29on the ground is considered not to fall within the loading gauge40even if it falls within the construction gauge9, that is, usually, the feature29is considered not to be so high as to exceed a base46facing parallel to the rail surface13of the loading gauge40. Thus, the v coordinate value of the base46of the loading gauge40is set as vb, and in the case of vk≤vb, the measurement point Pkmay be identified as the measurement point of the feature29on the ground. In this case, the ground feature identification unit3b(FIG. 1) identifies, among the measurement points10, the measurement point whose height from the rail surface (more generally, the surface on which the wheels of the vehicle passing the track roll) is vb(the predetermined value) or less as the measurement point of the feature on the ground. In this case, the identification as to whether or not the measurement point10is the measurement point of the feature on the ground can be performed based on a concise reference.

(Method for Creating Construction Gauge Measurement Diagram)

FIG. 13is a flowchart of a method for creating a construction gauge measurement diagram according to the present embodiment. In step ST1, the distance measurement device2obtains, for each measurement point10, the nearest point16on the construction gauge9and the distance to the construction gauge9. In step ST2, the identification device3performs the identification of the attributes of the measurement point10. In step ST3, the drawing device4performs drawing of the construction gauge measurement diagram24(FIG. 11).

With reference toFIG. 14, in step ST1(FIG. 13), the operation performed by the distance measurement device2will be described in detail below.

In step ST10, the distance measurement device2reads the track data5and the construction gauge data6from the storage device1. In addition, the variable K indicating the number of pieces of data of the measurement points is set.

In step ST11, the distance measurement device2sets the variable k specifying the measurement point Pkto be processed as 1 among the measurement point data7(FIG. 3).

In step ST12, the distance measurement device2reads the data of the k-th measurement point Pkamong the measurement point data7of the storage device1, and obtains the track nearest point15to the track12. In addition, the mileage of the track nearest point15is set as the mileage Skof the measurement point Pk. The mileage Skis the length along the track12of the track nearest point15as described above, may be obtained by the integration of the distance from the start point of the track12, or may be obtained by the interpolation from the front and rear track points of the track nearest point15if the mileage is previously defined in the track point Qi.

In step ST13, the distance measurement device2calculates the uv coordinate values (uk, vk) from the coordinate values (Xk, Yk, Zk) of the measurement point Pk. In step ST14, the distance measurement device2obtains the distance Dkof the measurement point Pkin the uv coordinate plane, and the nearest point Hkgiving the distance. When the measurement point10falls within the construction gauge9, the sign of the distance Dkis set as negative. In step ST15, the distance measurement device2stores the mileage Sk, (uk,vk), the distance Dk, and the nearest point Hk, in the storage device1(FIG. 1). In step ST16, 1 is added to k.

In step ST17, the distance measurement device2determines whether or not k is larger than K. If so, then the step ST1ends, otherwise, the process returns to step ST12.

With reference toFIG. 15, the operation performed by the identification device3in step ST2(FIG. 13) will be described in detail below.

In step ST20, the identification device3reads the construction gauge data6from the storage device1. In addition, the variable K indicating the number of pieces of data of the measurement points is set.

In step ST21, the identification device3sets the variable k specifying the measurement point Pkto be processed as 1 among the measurement point data7(FIG. 3).

In step ST22, the identification device3reads the mileage Sk, (uk, vk), the distance Dk, and the nearest point Hkof the measurement point Pkfrom the storage device1.

In step ST23, the identification device3determines whether or not the distance Dkis the predetermined threshold value D0or less. It should be noted that if the value D0is set as 0, only the measurement point falling within the construction gauge9can be set as the drawing object. If the distance Dkis the threshold value D0or less, the identification device3proceeds to step ST24, otherwise, proceeds to step ST29.

In step ST24, the identification device3identifies whether or not the measurement point Pkis the measurement point of the feature29on the ground. Specifically, as described above, it is determined depending on whether the nearest point Hkis on the base17of the construction gauge9, or whether vk≤vhor not. If the measurement point Pkis the measurement point of the feature29on the ground, the identification device3proceeds to step ST26, otherwise, proceeds to step ST25.

In step ST25, whether or not the measurement point Pkis the feature on the left side of the track is identified. As described above, this is identified depending on whether or not the u coordinate value ukis 0 or less. If the measurement point Pkis on the left side of the track, the identification device3proceeds to step ST27, otherwise, proceeds to step ST28.

In step ST26, in response to the measurement point Pkbeing identified as the feature29on the ground, a variable Fkindicating the identification result is set to “0” representing the feature on the ground. In step ST27, in response to the measurement point Pkbeing identified to be on the left side of the track, the variable Fkindicating the identification result is set to “1” representing the left side of the track. In step ST28, in response to the measurement point Pkbeing identified to be on the right side of the track, the variable Fkindicating the identification result is set to “2” representing the right side of the track. In step ST29, in response to the measurement point Pkbeing identified as not falling within a predetermined range from the construction gauge9, in other words, in response to the measurement point Pkbeing identified as keeping a sufficient distance from the construction gauge9, the variable Fkindicating the identification result is set to “−1”. In step ST30, the variable Fkindicating the identification result is stored in the storage device1.

In step ST31, the identification device3adds 1 to k. In step ST32, whether or not k is larger than K is determined. If so, then step ST32ends, otherwise, the process returns to step ST22.

With reference toFIG. 16, the operation performed by the drawing device4in step ST3(FIG. 13) will be described in detail below.

In step ST40, the drawing device4initializes the construction gauge measurement diagram24to the state of not being drawn, and sets the variable K indicating the number of pieces of data of the measurement points. In step ST41, the variable k indicating the measurement point data is set to 1. In step ST42, the mileage Sk, (uk, vk), the distance Dk, and the identification result Fkof the measurement point Pkare read from the storage device1.

In step ST43, the drawing device4determines whether or not the k-th measurement point Pkis identified as the measurement point of the feature29on the ground. If the measurement point Pkis identified as the measurement point of the feature29on the ground, the process proceeds to step ST46, otherwise, the process proceeds to step ST44.

In step ST44, the drawing device4determines whether or not the k-th measurement point Pkis identified to be on the left side of the track. If it is identified so, the process proceeds to step ST47, otherwise, the process proceeds to step ST45.

In step ST45, the drawing device4determines whether or not the k-th measurement point Pkis identified to be on the right side of the track. If it is identified so, the process proceeds to step ST48, otherwise, the process proceeds to step ST49.

In step ST46, in terms of the measurement point Pk, the drawing device4draws a drawing point25at the (Sk, uk) of the plan view18. In step ST47, in terms of the measurement point Pk, a drawing point26is drawn at (Sk, vk) of the left side view19. In step ST48, in terms of the measurement point Pk, a drawing point27is drawn at (Sk, vk) of the right side view. In steps ST46to ST48, as described above, depending on whether the measurement point Pkfalls within the construction gauge9(that is, Dk≤0), or whether it approaches the construction gauge9(that is, D0≥Dk>0), the symbol such as the size and color of the drawing point is changed. In addition, when the drawing region is already drawn with the symbol corresponding to the distance smaller than the distance Dkof the measurement point Pk, the point regarding the measurement Pkis not overwritten so that the measurement result with a smaller distance is not erased.

In step ST49, the drawing device4adds 1 to k. In step ST50, whether or not k is larger than K is determined. If so, then the process proceeds to step ST51, otherwise, the process returns to step ST42. In step ST51, the plan view18, the left side view19, and the right side view20are stored in the storage device1as one set of the construction gauge measurement diagram24. Thus, the construction gauge measurement diagram24is obtained.

The construction gauge measurement diagram24stored in the storage device1can be output by the output device (not shown). Specifically, the construction gauge measurement diagram24may be electronically displayed on the screen by a display, and may be printed as a paper document by a printer or a plotter. The measurement point10has three-dimensional coordinates, and therefore if this is to be expressed in document, the object of the two variables respectively assigned to the vertical and horizontal axes in document must be selected appropriately. In the present embodiment, as described above, the mileage and the u coordinate value are selected as the two axes with respect to the measurement point of the feature29on the ground, and the mileage and the v coordinate value are selected as the two axes with respect to the measurement point of the feature30along the track. On top of that, the form such as color and size of the figure to be drawn is changed, whereby the distance to the construction gauge9is represented. In this way, the hindrance to the on-site identification of the feature approaching or entering the construction gauge9does not occur. Although the v coordinate value is discarded in terms of the feature29on the ground, and the u coordinate value is discarded in terms of the feature30along the track, the importance of the v coordinate value is low in the identification of the feature29on the ground close to the rail surface13, and the importance of the u coordinate value is low in the identification of the feature30along the track. That is, according to the present embodiment, the construction gauge measurement results are represented as a set of the drawings with the two axes of the vertical and horizontal axes while retaining the information important to the identification of the feature.

(Summary of Operations and Effects)

According to the present embodiment, among the measurement points10, different drawing processes are performed on the measurement points identified as falling within the predetermined range from the construction gauge9by the range identification unit3aand the measurement points identified as not falling within the predetermined range from the construction gauge9by the range identification unit3a. Therefore, from the construction gauge measurement diagram24(FIG. 11), the measurement point falling within the predetermined range from the construction gauge9, that is, the measurement point approaching or entering the construction gauge9can be grasped.

In addition, the construction gauge measurement results over a wide area can be condensed by using the plan view18and the side views19and20. The measurement point10of the feature on the ground is drawn in the plan view18, whereby the position on the ground can be grasped from the plan view18, and this allows the feature on the ground to be easily identified on-site. In addition, the measurement point10not of the feature on the ground is drawn in the side views19and20, whereby the height position can be grasped from the side views19and20, and this allows the feature not on the ground to be easily identified on-site.

As described above, there can be obtained the construction gauge measurement diagram capable of condensedly displaying the measurement point10while maintaining particularly useful information for identifying on-site the position of the feature corresponding to the measurement point10entering or approaching the construction gauge9.

In the present embodiment, the drawing device4(FIG. 1) draws the measurement point identified as falling within the predetermined range from the construction gauge9by the range identification unit3aamong the measurement points10, and does not draw the measurement point identified as not falling within the predetermined range from the construction gauge9by the range identification unit3aamong the measurement points10. As a result, only the measurement point approaching or entering the construction gauge9among the measurement points10can be grasped from the measurement diagram.

In addition, the drawing device4(FIG. 1) draws the measurement point identified to be located on the left side by the left-right identification unit3camong the measurement points10in the left side view19, and draws the measurement point identified to be located on the right side by the left-right identification unit3camong the measurement points10in the right side view20(seeFIG. 11). As a result, it is possible to grasp which of the left side and the right side of the track the measurement point10of the feature not on the ground is located on from the construction gauge measurement diagram24.

Although in the above embodiment, as the method for identifying whether or not the measurement point10is the measurement point of the feature on the ground, the method based on the position of the nearest point Hkto the construction gauge9of the measurement point Pkor the comparison between the v coordinate value vkof the measurement point Pkand the v coordinate value vbof the loading gauge40is described, other methods may be used. For example, even if the identification based on the v coordinate value vkof the measurement point Pkis performed, the identification may be performed by using the value determined separately from the loading gauge40, for example, whether or not 0.05 m or less.

In addition, although in the above embodiment, the identification of detailed attributes (FIG. 15: steps ST26to ST28) and the subsequent drawing process are performed only on the measurement point Pkhaving a distance Dkof D0or less, the identification of detailed attributes and the drawing may be performed on all the measurement points10, regardless of the value of the distance Dk. Alternatively, the measurement point10in a predetermined range, for example, within 3 m, from the track12may be selectively drawn. In this case, the drawing device4(FIG. 1) draws the measurement point identified as falling within the predetermined range from the construction gauge9by the range identification unit3aamong the measurement points10, and the measurement point identified as not falling within the predetermined range from the construction gauge9by the range identification unit3aamong the measurement points10by using different symbols. As a result, while the measurement point approaching or entering the construction gauge9among the measurement points10is selectively grasped, the situation can be grasped also for the measurement point having a margin for the construction gauge9at the same time. Therefore, the margin for the construction gauge9can be grasped. The measurement point Pkwith the distance Dkexceeding D0is preferably drawn less conspicuously than the measurement point without the distance Dkexceeding D0, and for example, is drawn in a pale color, and is drawn so as not to appear in the front compared with the drawing of the measurement point approaching or entering the construction gauge9.

In addition, the reflection intensity of the laser beam during the measurement of the measurement point10may be reflected in the color and the brightness when the measurement point10is drawn in the construction gauge measurement diagram. The reflection intensity of the laser beam is correlated with the light reflectance of the measurement point10, and therefore, the construction gauge measurement diagram representing the local landscape can be obtained. For example, when all of the measurement points10are set as the object of the drawing, the measurement point with the distance D exceeding D0is drawn with the reflection intensity of the laser, and the measurement point with the distance D being D0or less may be drawn by using the symbol corresponding to the entry or the approach to the construction gauge9. This allows the landscape of the background of the symbol representing the measurement point entering or approaching the construction gauge9in the construction gauge measurement diagram to be represented by the measurement points far from the construction gauge9. In addition, a photographic image is captured at the same time as the measurement of the measurement point10, and the drawing may be performed with the color of the measurement point obtained from the pixel value. In addition, with the photographic image captured on-site as a background, the construction gauge measurement diagram may be drawn over that. In addition, the measurement point10entering or approaching the construction gauge9may be drawn bright by adding the value of the reflection intensity, and the measurement point10with the distance D exceeding D0may be drawn dark by subtracting the value of the reflection intensity.

In addition, although in the above embodiment, not only the measurement point10inside the construction gauge9but also the measurement point10approaching the construction gauge9is drawn, only the measurement point falling within the construction gauge9may be drawn by setting D0=0. Alternatively, each of the measurement point10falling within the construction gauge9and the measurement point10approaching the construction gauge9may be drawn as an individual construction gauge measurement diagram24.

In addition, although in the above embodiment, the construction gauge measurement diagram24is drawn by drawing a point or a figure for each of the measurement points10, when there is a feature entering or approaching the construction gauge, the measurement points entering or approaching the construction gauge are obtained densely in response to the feature, and therefore for each set of these cohesive measurement points, a closed curve figure such as a polygon including these may be drawn on the construction gauge measurement diagram. In this case, the color for filling the above figure may be changed so as to represent the entry or the approach to the construction gauge9. Alternatively, the drawing represented by one figure may be made for each set of measurement points cohesive for each feature.

In addition, although in the above embodiment, the v-axis being the vertical axis in the right side view20is taken downward, the v-axis may be taken upward in the same manner as in the left side view19. In this case, the right side view20is not vertically inverted either. In addition, although in the construction gauge measurement diagram24(FIG. 11), the plan view18, the left side view19, and the right side view20are drawn as separate drawings, the left side view19, the plan view18, and the right side view20may be drawn as one drawing arranged vertically in this order.

In addition, although in the above embodiment, a straight section is assumed, and the u-axis is described to be horizontal, and the v-axis is described to be vertical, when the cant is attached to the track in the curve, the uv coordinate system may be rotated as much as the angle of the cant of the nearest point15on the track so that the u-axis matches the rail surface13. Alternatively, the uv coordinate system is not rotated, and the construction gauge9may be rotated. In addition, the construction gauge9is expanded in the curve, and therefore the construction gauge9may be expanded in accordance with the radius of the curve of the nearest point15on the track. The angles of these cants and the radii of these curves may be stored in the storage device1in association with each point Qiof the track data5.

In addition, although in the above embodiment, two side views of the left side view19and the right side view20are created, when a structure requiring attention does not exist on one side of the track, the corresponding side view is not created, and the construction gauge measurement diagram24may be configured by the plan view18and one of the side views.

Furthermore, the construction gauge measurement diagram24may be configured by the plan view18when the measurement results of only the feature29on the ground are desired to be shown, and by the left side view19and/or the right side view20when the measurement results of only the feature along the track12are desired to be shown.

In addition, although in the above embodiment, the track Qi(FIG. 4) is described as having been obtained, the detection of the rails8may be performed from the measurement point Pk, and the data Qiof the track may be obtained with the path center as the track12. In that case, as described above, it is obvious that the rails8approach the construction gauge9, and therefore the measurement point10of the rails8does not have to be drawn in the plan view18.

In addition, although in the above embodiment, from the operation of the distance measurement device2in step ST1to the operation of the drawing device4in step ST3, the operation is performed so that the process in each step is executed on all the measurement points Pkand then proceed to the next step, it may be configured that, for each measurement point Pk, the distance Dkto the construction gauge9and the nearest point Hkare obtained, the identification is performed, and the drawing on the construction gauge measurement diagram is repeated.

In addition, although in the above embodiment, the construction gauge measurement diagram is drawn by drawing a point or a figure, the value of the distance Dkmay be displayed in the measurement point Pkwith the distance Dkbeing relatively small or minimum so that the degree of entering or approaching the construction gauge9is more specifically shown.

In addition, although in the above embodiment, the distance Dkis set as 0 or negative when the measurement point10falls within the construction gauge9, the Dkmay be set as the distance between the measurement point10and the nearest point16, and the variable indicating whether or not the measurement point10falls within the construction gauge9may be used separately.

In the present embodiment, there will be described the case where the track data5stored by the storage device1(FIG. 1) relate to the route of a plurality of tracks running side by side.

FIG. 17illustrates an example of the tracks12, the construction gauges9, and the measurement points10handled by the creating device of the construction gauge measurement diagram (FIG. 18) according to the present embodiment. Unlike the case of the first embodiment (FIG. 2), a construction gauge9is set in each of the plurality of tracks12running side by side. Whether or not a certain structure is the obstacle to transportation should be determined by the distance between this structure and the construction gauge9closest thereto. Then, the smallest value among the distances between each measurement point Pkand a plurality of construction gauges9is set as the distance Dk, and the construction gauge measurement diagram24is created based on this. In addition, in the present embodiment, the construction gauge measurement diagram for each track12is not created, and the construction gauge measurement diagram handling two tracks12running side by side is created. Therefore, the plan view18includes a range of two tracks12. The construction gauge measurement diagram24is configured by the plan view18, the left side view19of the track on the left side, and the right side view20of the track on the right side corresponding to the plan view18.

(Operation of Device for Creating Construction Gauge Measurement Diagram)

Although the device for creating a construction gauge measurement diagram of the present embodiment has the same basic configuration as that of the first embodiment (FIG. 1), there is a difference in the configuration of each portion. In the following, this difference will be mainly described.

The distance measurement device2(FIG. 1) calculates the distances DLkand DRkbetween each of the construction gauges9of the two left and right tracks12and the measurement point Pkin the present embodiment. The distance with the minimum value among them is set as the distance Dkbetween the measurement point10and the construction gauge9. In addition, among the nearest points HLkand HRkto the respective two construction gauges9, the nearest point giving the minimum value is set as the nearest point Hk. When the measurement point Pkfalls within any one of the construction gauges9, the distance Dkis given a negative sign.

FIG. 19is an explanatory diagram illustrating the operation of the identification device3(FIG. 1). The uv plane of the track12on the left side is represented as the uLvLplane, and the uv plane of the track12on the right side is represented as the uRvRplane. Although details will be described later, the identification device3performs the identification by using the distance Dkand the nearest point Hk(FIG. 20). Specifically, the identification device3identifies which of the construction gauges9the measurement point10falls within, or which of the construction gauges9the measurement point10approaches in the present embodiment. For example, when the nearest point16is on the base17of the construction gauge9, the measurement point10is identified as the measurement point of the feature29on the ground. Furthermore, for the measurement point10other than that, it is identified to have the right attributes if there is the nearest point16on the construction gauge9of the track12on the right side, and it is identified to have the left attributes if there is the nearest point16on the construction gauge9of the track12on the left side.

For example, in the figure, the nearest points HaLand HaRof the respective measurement points PaLand PaRare located on the base17of the construction gauge9. Therefore, the measurement points PaLand PaRare identified as the measurement points of the feature29on the ground. On the other hand, the nearest points HbRand HcLof the respective measurement points PbRand PcLare not on the base17of the construction gauge9. In this case, the identification of the left and right attributes is performed. Specifically, the measurement point PbRis identified to have the right attributes because the nearest point HbRis on the construction gauge9of the track on the right side, and the measurement point PcLis identified to have the left attributes because the nearest point HcLis on the construction gauge9of the track on the left side.

In the present embodiment, the drawing device4(FIG. 1) draws the measurement points10having the respective attributes of: on the ground, the left (of the track), and the right (of the track), as in the plan view18, the left side view19, and the right side view20(FIG. 18). Although the details will be described later, the drawing device4refers to the identification results of the measurement point10by the identification device3, and draws it at (Sk, uLk) in the plan view18if it is the feature29on the ground. If it is on the left side of the track, it is drawn at (Sk, vLk) in the left side view19. If it is on the right side of the track, it is drawn at (Sk, vLk) in the right side view20. It should be noted that, here, the value of each vertical axis preferentially takes the uv coordinate value with respect to the left track12(FIG. 17). That is, the above values uLkand vLkare the coordinates of the measurement point Pkin the uLvLcoordinate system (FIG. 17).

(Method for Creating Construction Gauge Measurement Diagram)

Although the method for creating a construction gauge measurement diagram of the present embodiment has the same basic configuration as that of the first embodiment (FIG. 13), there is a difference in the configuration of each portion. In the following, this difference will be mainly described.

With reference toFIG. 20, the operation performed by the distance measurement device2in step ST1(FIG. 13) will be described in detail below. It should be noted that the description of the same portions as in the first embodiment (FIG. 14) will be omitted.

In step ST200, the distance measurement device2reads the data of the k-th measurement point Pkamong the measurement point data7in the storage device1(FIG. 1). Then, the track nearest point15to the track12on the left side is obtained (seeFIG. 7), and the mileage of the track nearest point15is set as the mileage Skof the measurement point Pk.

In step ST201, the uLvLcoordinate values (uLk, vLk) of the left track is calculated from the coordinate values (xk, yk, zk) of the measurement point Pk.

In step ST202, the distance DLkbetween the measurement point10and the construction gauge9in the uLvLcoordinate plane, and the nearest point HLkgiving the distance (FIG. 19: closest approach point16) are obtained. When the measurement point10falls within the construction gauge9, the sign of the distance DLkis set as negative.

In step ST204, the uRvRcoordinate values (uRk, vRk) with reference to the right track is calculated from the coordinate values (xk, yk, zk) of the measurement point Pk. It should be noted that the left track may be a reference instead.

In step ST205, the distance DRkbetween the measurement point10and the construction gauge9in the uRvRcoordinate plane, and the nearest point HRkgiving the distance are obtained. When the measurement point10falls within the construction gauge9, the sign of the distance DRkis set as negative.

In step ST206, whether or not the DLkis the DRkor less is determined. If so, then the process proceeds to step ST207, otherwise, the process proceeds to step ST208.

In step ST207, the DLkis set as the distance Dk, and the left nearest point HLkis set as the nearest point Hk. In addition, the variable Gk, indicating which of the left and the right construction gauges the closest approach is made to, is set to the numeric value representing the left, for example, 0.

In step ST208, the DRkis set as the distance Dk, and the right nearest point HRkis set as the nearest point Hk. In addition, the variable Gkis set to the numeric value representing the right, for example, 1.

In step ST209, the mileage Sk, the distance Dk, and the nearest point Hkare stored in the storage device1. In addition, (uLk, vLk) is stored in the storage device1as (uk, vk).

With reference toFIG. 21, the operation performed by the identification device3in step ST2(FIG. 13) will be described in detail below. It should be noted that the description of the same portions as in the first embodiment (FIG. 15) will be omitted.

In step ST222, the mileage of the measurement point Pk, (uk, vk), the distance Dk, the nearest point Hk, and the variable Gkare read from the storage device1.

In step ST225, the identification device3identifies whether or not the measurement point Pkis on the left of the track. Specifically, whether or not the variable Gkis 1 indicating the left is determined. If so, then the process proceeds to step ST27, otherwise, the process proceeds to step ST28.

Next, the construction gauge measurement diagram24in the double track section (FIG. 18) with the plan view18, the left side view19, and the right side view20as one set can be obtained by the operation performed by the drawing device4in step ST3(FIG. 13).

According to the present embodiment, there can be obtained the construction gauge measurement diagram24in which the distances to each of the construction gauges9are integrated in the section where the two tracks12run side by side. In this way, the construction gauge measurement diagram24integrated for the double track can be obtained, and therefore, for example, the measurement results of the construction gauge over the entire route for both tracks of up and down can be concisely represented in one set of construction gauge measurement diagram24, and can be easily understood.

It should be noted that although in the above embodiment, the double track section where two tracks run side by side is described, the section where three or more tracks run side by side can also be performed in the same manner. In addition, although in the above embodiment, the construction gauge measurement diagram24for the left and right tracks in the double track section is configured to be represented by a single plan view18, a left side view19, and a right side view20, each of the construction gauge measurement diagrams may be created by individually handling the left and right tracks in the same manner as the construction gauge measurement diagram24in the first embodiment (FIG. 11).

In the first embodiment, the feature30along the track (FIG. 12) approaching or entering the construction gauge9is drawn by being divided into the left side view19and the right side view20(FIG. 11); however, the feature30is drawn in one side view in the present embodiment. Therefore, in order that it is not unclear which of the left side and the right side of the track the feature30is located on, in the present embodiment, the drawing device4(FIG. 1) draws, by using different symbols, the measurement point identified to be located on the left side and the measurement point identified to be located on the right side by the left-right identification unit3c(FIG. 1) among the measurement points.

FIG. 22is an explanatory diagram illustrating the operation of the drawing device4(FIG. 1) included in the device for creating a construction gauge measurement diagram24(FIG. 23) according to the present embodiment. In the present embodiment, the drawing device4draws the measurement points Paand Pb(FIG. 22) of the features on the left and right of the track12as the side view33(FIG. 23) projected on one projection surface32. At that time, in order to indicate which of the left and right of the track12the point26drawn in the side view33is on, the color, the shade, or the size of the point for drawing is changed depending on the u coordinate value. In the side view33of the construction gauge measurement diagram24(FIG. 23), which of the left side and right side of the track12(FIG. 22) the measurement point is located on, and whether the measurement point enters or approaches the construction gauge9are represented by changing the hatching. Specifically, the measurement point on the right side of the track12is represented by the right-downward diagonal hatching, and the measurement point on the left side of the track12is represented by the left-downward diagonal hatching.

Although the method for creating a construction gauge measurement diagram of the present embodiment has the same basic configuration as that of the first embodiment (FIG. 13), there is a difference in the configuration of each portion. In the following, this difference will be mainly described.

With reference toFIG. 24, the operation performed by the drawing device4in step ST3(FIG. 13) will be described. Step ST3in the present embodiment is obtained by respectively replacing steps ST47, ST48, and ST51in the first embodiment (FIG. 16) with steps ST347, ST348, and ST351.

In step ST347, the drawing device4draws the point26at (Sk, vk) in the side view33in a form indicating that the measurement point Pkis on the left side of the track. In step ST348, the point26is drawn at (Sk, vk) in the side view33in a form indicating that the measurement point Pkis on the right side of the track. In these steps ST347and ST348, the form such as the size and the color of the drawing point26may be changed depending on whether the measurement point Pkenters or approaches the construction gauge9as described above, in addition to the distinction in the left and right. In addition, the drawing of the point falling within the construction gauge9may be prioritized to be in the front, and, for example, the color for the measurement point on the right side of the track may be prioritized to be in the front.

In step ST351, the drawing device4stores the plan view18and the side view33in the storage device1as one set of the construction gauge measurement diagram24. Thus, the construction gauge measurement diagram24(FIG. 23) is obtained. It should be noted that the configuration other than the above is about the same as the configuration in the first embodiment described above, and therefore the same or corresponding elements will be denoted by the same reference numerals, and the description thereof will not be repeated.

According to the present embodiment, both measurement points10on the left side and the right side of the track12can be displayed in one side view33while being distinguished from each other. For this reason, the measurement results of the construction gauge over the entire route can be represented by two drawings of the plan view18and the side view33, and can be understood. That is, a more condensed construction gauge measurement diagram24can be obtained.

Although in the above third embodiment (FIG. 24), the construction gauge measurement diagram24is configured by one plan view18and one side view33, in the present embodiment, the construction gauge measurement diagram is configured by only a plan view. The device for creating a construction gauge measurement diagram of the present embodiment has the same basic configuration as that of the first embodiment (FIG. 1). In the present embodiment, as for the drawing device4(FIG. 1), all of the measurement points entering or approaching the construction gauge9among the measurement points10(FIG. 2) are drawn in the plan view18(FIG. 26), and the side view is not created. In the plan view18, the measurement point of the feature is drawn irrespective of whether the feature is on the ground or not.

In the example illustrated inFIG. 25, the drawing device4(FIG. 1) draws each of the measurement point Paof a feature on the ground, the measurement point Pbon the right side of the track12, and the measurement point Pcon the left side in the plan view18by projecting it onto the projection surface21on the ground. At that time, in order to show whether the drawn point is that of the feature on the ground, the form such as the color, the shade, or the size of the point at the time of the drawing is changed depending on the identification results in the identification device3(FIG. 1) of the measurement point10and the z coordinate value or the v coordinate value being the height.

That is, the construction gauge measurement diagram24includes drawing of the symbols representing those of the features on the ground among a plurality of measurement points and drawing of the symbols representing those not of the features on the ground among the plurality of measurement points. The symbols representing the features on the ground among a plurality of measurement points and the symbols representing those not of the features on the ground among the plurality of measurement points are different from each other.

In the construction gauge measurement diagram24(FIG. 26), the drawing form is changed depending on the v coordinate value of the measurement point and the classification whether the measurement point approaches or enters the construction gauge9.FIG. 26schematically shows this by changing the hatching. Specifically, the measurement point not of the feature on the ground is indicated by the right-downward diagonal hatching, the thickness is changed depending on its height, and the measurement point falling within the construction gauge9are represented by being filled. It should be noted that the construction gauge measurement diagram24may be a diagram in which only the measurement point falling in a predetermined range from the construction gauge among the measurement points is drawn.

Although the method for creating a construction gauge measurement diagram of the present embodiment has the same basic configuration as that of the first embodiment (FIG. 13), there is a difference in the configuration of each portion. In the following, this difference will be mainly described.

With reference toFIG. 27, the operation performed by the drawing device4(FIG. 1) in step ST3(FIG. 13) will be described. Step ST3in the present embodiment is obtained by replacing steps ST46to ST48in the first embodiment (FIG. 16) with steps ST446and ST447, and step ST51with step ST451.

In step ST446, in terms of the measurement point Pk, the drawing device4draws the point25(FIG. 25) at (Sk, uk) in the plan view18in a form indicating the feature on the ground.

In step ST447, in terms of the measurement point Pk, the drawing device4draws the points26and27(FIG. 25) at (Sk, uk) in the plan view18in a form indicating the left and the right of the track12. The form of the size and the color of the drawing point25is changed depending on whether the measurement point Pkenters or approaches the construction gauge9. In addition, the drawing point of the measurement point falling within the construction gauge9may be prioritized to be in the front, and the drawing with respect to the measurement point on the left and the right of the track may be prioritized to be in the front.

In step ST451, the plan view18(FIG. 26) is stored in the storage device1as the construction gauge measurement diagram24. Thus, the construction gauge measurement diagram24is obtained.

According to the present embodiment, the construction gauge measurement results over a wide area can be condensed into a plan view. In addition, by using different symbols for drawing the measurement points10(FIG. 2) in the plan view18(FIG. 26), whether the measurement points10are those of the features on the ground or not can be grasped from the construction gauge measurement diagram24(FIG. 26). Therefore, the feature can be easily identified on-site.

In the construction gauge measurement diagram24(FIG. 11) of the first embodiment, the measurement point of the feature on the ground which is apt to approach or enter the base of the construction gauge is drawn in the plan view18, and all of the measurement points of the other features are drawn in side views. As another feature other than the feature on the ground, the feature30(FIG. 12) installed along the track is typically present as mentioned in the first embodiment; however, in addition to this, the feature which is installed above the track12and the construction gauge9and apt to approach or enter the upper portion of the construction gauge9(also referred to as “feature of the upper portion”) may be present. For example, an overhead wire, an elevated bridge, or the like corresponds to this. The present embodiment is suitable in such a case, and in addition to the plan view in which the feature on the ground is drawn, the top plan view35in which the feature of the upper portion is drawn (FIG. 29) is further used.

Although the device for creating a construction gauge measurement diagram of the present embodiment has the same basic configuration as that of the first embodiment (FIG. 1), there is a difference in the configuration of each portion. In the following, this difference will be mainly described with reference toFIG. 28.

In the present embodiment, the identification device3(FIG. 1) includes an upper portion feature identification unit (not shown), in addition to the range identification unit3a, the ground feature identification unit3b, and the left-right identification unit3c. The upper portion feature identification unit identifies whether or not the measurement point10(FIG. 2) is that of the feature39of the upper portion (FIG. 28). This identification can be performed by the principle, for example, similar to the principle of the identification by the ground feature identification unit3b. Specifically, when the nearest point Hk(seeFIG. 8) of the measurement point Pkis placed on the top side37(FIG. 28) defined in the construction gauge9, or when vkof the measurement point is vt(FIG. 12) being the height of the loading gauge40(FIG. 12) or more, this measurement point is identified as that of the feature39of the upper portion.

It should be noted that, although the details will be described later, the upper portion feature identification unit may be considered to perform the identification on each of the measurement points at least identified as falling within a predetermined range from the construction gauge9by the range identification unit3aamong the measurement points10(FIG. 2).

In the drawing device4(FIG. 1), in the present embodiment, the measurement point approaching or entering the construction gauge9and identified to be the measurement point of the feature39of the upper portion is drawn in the top plan view35(FIG. 29). The top plan view35is obtained by the projection of the feature39of the upper portion of the track on the projection surface36provided above the track12. In the upper portion of the construction gauge9, the measurement points10approaching or entering it can be widely distributed in the transverse direction of the track12. Therefore, which positions in the u-axis direction the measurement points10are in or how wide a range they are distributed is not known, if the measurement points of the features of the upper portion are drawn in the side view. In the present embodiment, these are drawn in the top plan view35, whereby the position and the spread in the u-axis direction of the measurement points can be easily understood.

The construction gauge measurement diagram24(FIG. 29) includes, in order from the top, the top plan view35, the left side view19, the plan view18, and the right side view20. The horizontal axis s of each of the figures is intended to correspond to the mileage of the track12, and matches each other. The u coordinate value is made to upwardly correspond to the vertical axis of the top plan view35. With this arrangement, the construction gauge measurement diagram24can be obtained by the projection surfaces22to24and36(FIG. 28) being developed, and therefore the understanding of the construction gauge measurement diagram24becomes easier.

Although the method for creating a construction gauge measurement diagram (FIG. 29) of the present embodiment has the same basic configuration as that of the first embodiment (FIG. 13), there is a difference in the configuration of each portion. In the following, this difference will be mainly described.

With reference toFIG. 30, the operation performed by the identification device3(FIG. 1) in step ST2(FIG. 13) will be described. Step ST2in the present embodiment further includes steps ST501and ST502in addition to those of the first embodiment (FIG. 15).

In step ST501, whether or not the measurement point Pkis that of the feature39of the upper portion is identified. This can be identified depending on whether the nearest point Hkis on the top side37of the construction gauge9as described above. If so, then the process proceeds to step ST502, otherwise, the process proceeds to step ST25.

In step ST502, in response to the measurement point Pkbeing identified as the feature39of the upper portion, the variable Fkindicating the identification result is set to “3” representing the feature39of the upper portion.

With reference toFIG. 31, the operation performed by the drawing device4(FIG. 1) in step ST3(FIG. 13) will be described. Step ST3in the present embodiment is obtained by adding steps ST503and504to those of the first embodiment (FIG. 16) and replacing step ST51with step ST551.

In step ST503, the drawing device4determines whether or not the k-th measurement point Pkis identified as the feature of the upper portion. If it is identified so, the process proceeds to step ST504, otherwise, the process proceeds to step ST44.

In step ST504, in terms of the measurement point Pk, a point41is drawn at (Sk, uk) of the top plan view35(FIG. 29). Also in the step ST504, as described above, the form of the size and color of the drawing of the point41is changed depending on whether the measurement point Pkenters or approaches the construction gauge9. In addition, the drawing of the measurement point falling within the construction gauge9is preferentially represented at the front.

In step ST551, the plan view18, the top plan view35, the left side view19, and the right side view20are stored in the storage device1as one set of the construction gauge measurement diagram24. Thus, the construction gauge measurement diagram24is obtained.

According to the present embodiment, a planar position of not only the feature on the ground, but also the feature of the upper portion of the track, can be grasped from the construction gauge measurement diagram24. As a result, the position and the spread in the transverse direction of the track12can be represented for not only the feature on the ground, but also for the feature of the upper portion of the track.

In the present embodiment, the case where the route of the track includes a section passing through a tunnel will be described. Although in the first embodiment, the measurement point of the feature other than the feature on the ground is represented in the side view, in the present embodiment, in the tunnel section, the measurement point of the feature other than the feature on the ground is represented in the tunnel development view.

Although the device for creating a construction gauge measurement diagram of the present embodiment has the same basic configuration as that of the first embodiment (FIG. 1), there is a difference in the configuration of each portion. In the following, this difference will be mainly described with reference toFIG. 32.

In the storage device1(FIG. 1), as the track data5, not only those described in the first embodiment, but also the data of a curve50indicating the tunnel cross-sectional shape is stored. It should be noted that although the identification device3(FIG. 1) is substantially the same as that of the first embodiment, when only the section passing through the tunnel among the routes is handled, the left-right identification unit3ccan be omitted.

In the present embodiment, the drawing device4draws the measurement point approaching or entering the construction gauge9in the tunnel in a development view47of the tunnel (FIG. 33). The development view47plots the situations of each point on the inner wall with the horizontal axis as the length in the longitudinal direction and the vertical axis as the length along the cross section of the tunnel, in a tunnel inner wall surface48. In the present embodiment, for the measurement point Pkapproaching or entering the construction gauge9, a point49projected onto the tunnel inner wall surface48is considered, and this point is drawn in the development view47. InFIG. 32, the length along the curve50of the cross section is set as λk. The tunnel inner wall surface48is the surface obtained by the sweeping of the curve50representing the tunnel cross section in the axis direction of the tunnel. The projected point49of the measurement point Pkis set as the point giving the shortest distance from the measurement point Pkonto the tunnel inner wall surface48.

The construction gauge measurement diagram (FIG. 33) includes, in order from the top, the development view47and the plan view18. Here, the horizontal axis takes the mileage s also in the development view47. The vertical axis indicates the length λ (for example, λkinFIG. 32) along the cross section of the projected point49. It should be noted that the development view47of the tunnel is drawn as viewed from above the tunnel, and therefore the length along the cross section is obtained by the measurement from the end point on the right side.

Although the method for creating a construction gauge measurement diagram (FIG. 33) of the present embodiment has the same basic configuration as that of the first embodiment (FIG. 13), there is a difference in the configuration of each portion. In the following, this difference will be mainly described.

With reference toFIG. 34, the operation performed by the identification device3(FIG. 1) in step ST2(FIG. 13) will be described. Step ST2in the present embodiment is obtained by omitting steps ST25, ST27, and ST28from those of the first embodiment (FIG. 15), and adding step ST600. Step ST600is executed if the measurement point Pkis identified as not the measurement point of the feature on the ground in step ST24, and the variable Fkis set to “4”.

With reference toFIG. 35, the operation performed by the drawing device4(FIG. 1) in step ST3(FIG. 13) will be described. Step ST3in the present embodiment is obtained by omitting steps ST44, ST45, ST47, and ST48from those of the first embodiment (FIG. 16), adding steps ST601and ST602, and replacing step ST51with step ST651.

In step ST601, the drawing device4determines whether the variable Fk=4 is satisfied for the k-th measurement point Pk. If it is satisfied, the process proceeds to step ST602, otherwise, the process proceeds to step ST49.

In step ST602, the drawing device4draws a point at (Sk, λk) of the development view47as the measurement point Pk. In step ST602, as described above, the form of the size and the color of the drawing point is changed depending on whether the measurement point Pkenters or approaches the construction gauge9. In addition, the drawing of the point entering the construction gauge9is set at the front.

In step ST651, as shown inFIG. 33, the plan view18and the development view47are stored in the storage device1as one set of the construction gauge measurement diagram. Thus, the construction gauge measurement diagram is obtained.

According to the present embodiment, the construction gauge measurement results over a wide area can be condensed by using the plan view and the development view. The measurement point10of the feature on the ground is drawn in the plan view18(FIG. 33), whereby the position on the ground can be grasped from the plan view18, and this allows the feature on the ground to be easily identified on-site. In addition, the measurement point10not of the feature on the ground is drawn in the development view47, whereby the position in the tunnel inner surface can be grasped, and this allows the feature not on the ground to be easily identified on-site. Therefore, there can be obtained the construction gauge measurement diagram capable of condensedly displaying the measurement point10while maintaining particularly useful information for identifying in the on-site tunnel the position of the feature corresponding to the measurement point10entering or approaching the construction gauge9.

In addition, there are cases where the development view is used even in the control chart for deformation such as the cracks in the tunnel, and in such a case, the comprehensive management of the tunnel can be performed by the combination of the development view of the control chart for deformation and the development view47(FIG. 33) of the construction gauge measurement diagram, or by using the figure obtained by combining both development views.

Although in each of the above embodiments, the construction gauge measurement diagram24is created as a single figure, this may be superimposed on the map along the track of the map.

Although the device for creating a construction gauge measurement diagram of the present embodiment has the same basic configuration as that of the first embodiment (FIG. 1), there is a difference in the configuration of each portion.

The storage device1stores a map67of the region including the route of the track (FIG. 36). When the construction gauge measurement diagram is created, the map data is stored in the storage device1. The drawing device4draws the construction gauge measurement diagram24on the map67.

In the present embodiment, the drawing device4draws the plan view18, the left side view19, and the right side view20constituting the construction gauge measurement diagram24along the track42drawn on the map67. The construction gauge measurement diagram is drawn along the track42on the map67in accordance with the mileage, whereby the understanding of the point where the feature approaching or entering the construction gauge9is present and the environment of its surrounding can be facilitated.

InFIG. 36, the plan view18, the left side view19, and the right side view20are drawn as the continuous construction gauge measurement diagram24. The s-axis of the construction gauge measurement diagram24is placed on the track42. The t-axis is taken in a direction perpendicular to the s-axis at each point. The plan view18is placed in the center, and the drawing point25is drawn at (s, t)=(Sk, −vk). In order that each of the left side view19and the right side view20is drawn on both sides of the plan view18, the maximum value of the absolute value of the u coordinate value of the construction gauge9is set as U0=max {|Uj|}, and each of the drawing points is drawn at (Sk, vk+U0) in the left side view19and at (Sk, −vk−U0) in the right side view20.

Although the method for creating a construction gauge measurement diagram (FIG. 36) of the present embodiment has the same basic configuration as that of the first embodiment (FIG. 13), there is a difference in the configuration of each portion. In the following, this difference will be mainly described.

With reference toFIG. 37, the operation performed by the drawing device4(FIG. 1) in step ST3(FIG. 13) will be described. Step ST3in the present embodiment is obtained by adding step ST700to those of the first embodiment (FIG. 16), and respectively replacing steps ST46to ST48and ST51with steps ST746to ST748and ST751.

By step ST700, the drawing device4retrieves the map67from the storage device1. In step ST746, in terms of the measurement point Pk, a point is drawn at (Sk, −uk) in the region38of the construction gauge measurement diagram24on the map67. In step ST747, in terms of the measurement point Pk, a point is drawn at (Sk, vk+U0) in the region38of the construction gauge measurement diagram24on the map67. In step ST748, in terms of the measurement point Pk, a point is drawn at (Sk, −vk−U0) in the region38of the construction gauge measurement diagram24on the map67. In step ST751, the map on which the measurement point10is drawn is stored in the storage device1as the construction gauge measurement diagram24. Thus, the construction gauge measurement diagram24drawn on the map is obtained.

According to the present embodiment, the construction gauge measurement diagram24obtained by superimposing the construction gauge measurement results on the map67can be obtained. For this reason, the measurement point10displayed on the construction gauge measurement diagram can be grasped along with the surrounding situations shown on the map.

It should be noted that, although the construction gauge measurement diagram24is drawn on the map67in the present embodiment described above, the construction gauge measurement diagram24may be drawn on the aerial photograph.

With reference toFIG. 38, in the present embodiment, construction gauge measurement diagram data DB being the data for drawing the construction gauge measurement diagram is created from processing object data DA with the above-described measurement point data7, the track data5, and the construction gauge data6. The construction gauge measurement diagram data DB, which will be described in detail later, includes the data of the coordinate values for drawing each of the plurality of measurement points falling within a predetermined range from the construction gauge, and the data corresponding to the distance D from each of the measurement points to the construction gauge.9.

The device for creating construction gauge measurement diagram data includes a storage device1(storage means), a distance measurement device2(distance measurement means), an identification device3(identification means), and a data creation device4D (data creation means).

The storage device1includes a storage unit1A capable of storing processing object data DA, and a storage unit1B capable of storing construction gauge measurement diagram data DB. It should be noted that when the device for creating construction gauge measurement diagram data is used, first, the processing object data DA is stored in the storage unit1A, and thereafter, the construction gauge measurement diagram data DB created based on the processing object data DA is stored in the storage unit1B. Although in the method for creating construction gauge measurement diagram data described below, the processing object data DA is described as already stored in the storage unit1A, the processing object data DA only need to be stored when the device is used. It should be noted that the storage units1A and1B may be provided as the devices independent of each other.

The data creation device4D creates plan view data102including the coordinate values for drawing in the plan view the measurement point identified as the measurement point of the feature on the ground by the ground feature identification unit3bamong the measurement points, and the side view data including the coordinate values for drawing in at least one side view at least part of the measurement points identified as not the measurement point of the feature on the ground. In the present embodiment, left side view data103and right side view data104are created as the side view data.

In order to draw the measurement points identified to be on the ground, on the left side of the track, and on the right side of the track respectively in the plan view18, the left side view19, and the right side view20(FIG. 11), the data of each of the plan view coordinates, the left side view coordinates, and the right side view coordinates is necessary. The data creation device4D creates the plan view data102, the left side view data103, and the right side view data104respectively corresponding to these. The data creation device4D refers to the identification results of the measurement point10by the identification device3(FIG. 38), and obtains the coordinate values (Sk, uk) in the plan view18if the measurement point10is a measurement point on the ground. In addition, when the measurement point10is not a measurement point on the ground, if the measurement point10is on the left side of the track, the coordinate values (Sk, vk) of the left side view19is obtained, and if the measurement point10is on the right side of the track, the coordinate values (Sk, vk) of the right side view20is obtained. As a result, the coordinate values to be stored in the construction gauge measurement diagram data DB can be obtained.

As shown inFIG. 10, the measurement point10of the feature on the ground is projected onto a point25on the horizontal projection surface21, and the pattern projected onto this horizontal projection surface21is set as the plan view18. In accordance with the left and the right, other measurement points10are respectively projected onto the point26on the left projection surface22or the point27on the right projection surface23along the track12, and the patterns projected onto the left projection surface22and the right projection surface23are respectively set as the left side view19and the right side view20. The data creation device4D sets the coordinates of the measurement point10as the data including the coordinate values in the plan view18, the left side view19, or the right side view20where the measurement point10is drawn, whereby each of the plan view data102, the left side view data103, or the right side view data104is obtained.

In addition, each of the plan view data102, the left side view data103, and the right side view data104includes the data corresponding to the distance D from each of the measurement points to the construction gauge9in addition to the coordinate of the measurement points to be drawn. The distance D is measured by the distance measurement device2as described in the first embodiment.

In the drawing of the construction gauge measurement diagram using the construction gauge measurement diagram data DB, the plotting is performed in each of the plan view18, the left side view19, and the right side view20by using the coordinates included in a corresponding one of the plan view data102, the left side view data103, and the right side view data104. At that time, the data, included in the construction gauge measurement diagram data DB, corresponding to the distance D from each of the measurement points to the construction gauge9are used, whereby the drawing process can be changed depending on the distance D. As a result, the situations of the approach or the entry to the construction gauge9of the measurement point10are represented in the construction gauge measurement diagram24(FIG. 11).

In order to reduce the amount of data of the construction gauge measurement diagram data DB, only the measurement points identified as falling within the predetermined range from the construction gauge9among the measurement points need to be used for creating the construction gauge measurement diagram data DB.

It should be noted that the configuration other than the above is about the same as the configuration in the other first embodiment described above, and therefore the same or corresponding elements will be denoted by the same reference numerals, and the description thereof will not be repeated.

(Method for Creating Construction Gauge Measurement Diagram Data)

FIG. 39is a flowchart of a method for creating construction gauge measurement diagram data according to the present embodiment. In step ST1, the distance measurement device2obtains the nearest point16on the construction gauge9and the distance to the construction gauge9for each measurement point10. In step ST2, the identification device3performs the identification of the attributes of the measurement point10. In step ST4, the data creation device4D performs the data creation, and creates the construction gauge measurement diagram data DB (FIG. 38).

With reference toFIG. 40, the operation performed by the data creation device4D in step ST4(FIG. 39) will be described in detail below.

In step ST840, the data creation device4D initializes the construction gauge measurement diagram data to the state without data, and sets the variable K indicating the number of pieces of data of the measurement points. In step ST41, the variable k indicating the measurement point data is set to 1. In step ST42, the mileage Sk, vk), the distance Dk, and the identification result Fkof the measurement point Pkare read from the storage device1.

In step ST43, the data creation device4D determines whether or not the k-th measurement point Pkis identified as the measurement point of the feature29on the ground. If it is identified as the measurement point of the feature29on the ground, the process proceeds to step ST846, otherwise, the process proceeds to step ST44.

In step ST44, the data creation device4D determines whether or not the k-th measurement point Pkis identified to be on the left side of the track. If it is identified so, the process proceeds to step ST847, otherwise, the process proceeds to step ST45.

In step ST45, the data creation device4D determines whether or not the k-th measurement point Pkis identified to be on the right side of the track. If it is identified so, the process proceeds to step ST848, otherwise, the process proceeds to step ST49.

In step ST846, in terms of the measurement point Pk, the data creation device4D sets the plan view coordinates (Sk, uk) of the plan view18as the coordinate values. The coordinate values (Sk, uk) and the distance Dkare stored in the storage device1as one plan view element data102k(FIG. 41) constituting the plan view data102. In step ST847, in terms of the measurement point Pk, (Sk, vk) of the left side view coordinates are set as the coordinate values. The coordinate values (Sk, vk) and the distance Dkare stored in the storage device1as one left side view element data103k(FIG. 42) constituting the left side view data103. In step ST848, in terms of the measurement point Pk, (Sk, vk) of the right side view coordinates are set as the coordinate values. The coordinate values (Sk, vk) and the distance Dkare stored in the storage device1as one right side view element data104k(FIG. 43) constituting the right side view data104.

In step ST49, the data creation device4D adds 1 to k. In step ST50, whether or not k is larger than K is determined. If so, then the step ST4ends, otherwise, the process returns to step ST42. As described above, the construction gauge measurement diagram data DB can be obtained.

Next, a method for using the construction gauge measurement diagram data DB will be described. The plan view data102, the left side view data103, and the right side view data104included in the construction gauge measurement diagram data DB respectively include the coordinate data as to which position in the plan view, the left side view, and the right side view of the construction gauge measurement diagram the plotting should be performed in. As the plotting, a symbol determined by the distance D is drawn, whereby the construction gauge measurement diagram can be obtained. This is output by the output device (not shown) as the construction gauge measurement diagram.

When the measurement results of the construction gauge are submitted to the report destination, they are transmitted as the construction gauge measurement diagram data DB, whereby they can be transmitted through the communication network such as the Internet as the electronic data. When only the measurement points identified as falling within the predetermined range from the construction gauge9among the measurement points are used for creating the construction gauge measurement diagram data DB, the amount of the data becomes small as compared with the case where all of the measurement points are used, and therefore the submission by communication becomes easier.

In addition, when the construction gauge measurement diagram is output by using the construction gauge measurement diagram data DB, the adjustment of the output contents such as the change of the range of the mileage or the change of the symbol at the time of drawing can be easily performed. For example, the symbol at the time of drawing can al so be adapted to the report destination form in the above-mentioned report destination.

(Summary of Operations and Effects)

As described above, there can be obtained the construction gauge measurement diagram data DB capable of drawing the construction gauge measurement diagram condensedly displaying the measurement points10while maintaining particularly useful information for identifying on-site the position of the feature corresponding to the measurement point10entering or approaching the construction gauge9. In addition, the range of the mileage or the drawing symbol in the construction gauge measurement diagram can be changed at any time by using the construction gauge measurement diagram data DB.

In the present embodiment, the data creation device4D (FIG. 38) sets the measurement point identified as falling within the predetermined range from the construction gauge9by the range identification unit3aamong the measurement points10as the object of the data creation, and does not set the measurement point identified as not falling within the predetermined range from the construction gauge9by the range identification unit3aamong the measurement points10as the object of the data creation. As a result, the construction gauge measurement diagram capable of grasping only the measurement point approaching or entering the construction gauge9among the measurement points10can be drawn by the construction gauge measurement diagram data DB obtained by the data creation.

In addition, the data creation device4D (FIG. 38) performs the data creation on the measurement point identified as the measurement point located on the left side by the left-right identification unit3camong the measurement points10into the left side view element data103k(FIG. 42), performs the data creation on the measurement point identified as the measurement point located on the right side by the left-right identification unit3camong the measurement points10into the right side view element data104k(FIG. 43), and integrates each of them into a corresponding one of the left side view data103and the right side view data104. As a result, each of them can be separated into one of the left side view and the right side view to be drawn, and therefore it is possible to grasp which of the left side and the right side of the track the measurement point10of the feature not on the ground is located on.

Although in the above embodiment, one of the plan view element data102k, the left side view element data103k, and the right side view element data104kis generated from one measurement point10, a plurality of types of data among them may be generated.

In addition, although in the above embodiment, the plan view element data102kis created as the data including the coordinate values of (Sk, uk), and the side view element data of the left and right is created as the data including the coordinate values of (Sk, vk), the coordinate values are not limited thereto, and only need to be those capable of drawing the plan view and the left and right side views based on them.

In addition, although inFIG. 38, the construction gauge measurement diagram data is shown as the data divided into the plan view data102, the left side view data103, and the right side view data104, one construction gauge measurement diagram data without such divisions may be created. For example, those obtained by adding the data indicating whether to be drawn in the plan view or to be drawn in the left and right side views, such as the variable Fkindicating the identification results, to the plan view coordinate values (Sk, uk) or the left and right side view coordinate values (Sk, vk) and the distance Dkare set as the element data, whereby whether the element data corresponds to the plan view or corresponds to the left and right side views can be determined by the variable Fk.

In addition, although in the above embodiment, the plan view coordinate values (Sk, uk) or the left and right side view coordinate values (Sk, vk) and the distance Dkare set as element data, and each of them constitutes the plan view data and the left and right side view data, when the symbol drawn corresponding to the distance Dkis already defined, the construction gauge measurement diagram data may be formed by using the data indicating the symbol in place of the data of the distance Dk, or the data with the information capable of determining the symbol. It should be noted that when the drawing symbol is determined regardless of the distance Dk, the construction gauge measurement diagram data can also be created without including the information capable of determining the symbol such as the distance Dk.

In addition, although in the above embodiment, the element data of the construction gauge measurement diagram data DB are created for each of the measurement points10, the element data may be created for each one group of the measurement points. When there are features entering or approaching the construction gauge, the measurement points entering or approaching the construction gauge can be densely obtained in accordance with the features. For this reason, these cohesive measurement points are set as one group, and the figure such as a polygon encompassing this is drawn, whereby when the construction gauge measurement diagram is drawn, the data including the coordinate values on the construction gauge measurement diagram of the figure may be used in place of the coordinates of each of the measurement points. In this case, in place of the data of the distance D of each measurement point, the minimum value, the average value of the distances D of one group of the measurement points, or the data indicating the drawing form such as the filling color of the above-mentioned figure determined by them may be used so as to represent the entering of or the approaching the construction gauge9of one group of measurement points.

Although in each of the above embodiments, one measurement point is drawn only in any one of the plan view, the left side view, the right side view, and the top plan view, the same measurement point may be repeatedly drawn in a plurality of figures. For example, in the first embodiment, the measurement point of the feature29on the ground (FIG. 12) may be drawn not only in the plan view18, but also in one of or both of the left side view19and the right side view20in the construction gauge measurement diagram24(FIG. 11).

In addition, the plan view, the side view, the top plan view, or the development view, which can be included in the construction gauge measurement diagram24, may be drawn as separate figures, or, for example, may be drawn as a single figure as in the above seventh embodiment.

In addition, although in each of the above embodiments, the case where the track is a railway track is described, the track is not limited thereto, and for example, may be a road. In the case of the road, the track data becomes a point sequence connecting the road centerline, and the construction gauge data is given as a rectangle with a width, for example, of up to the road edge on both sides in the cross section of the road and with a predetermined height, for example, of 3.8 m being the highest limit of the height of the vehicle. As a result, the construction gauge measurement diagram representing the feature approaching or entering the roadway from the swelling portion of the roadway or the left and the right of the road can be created over a wide range of the road.

It should be noted that the present invention allows each embodiment to be freely combined and each embodiment to be appropriately modified or omitted within the scope of the invention.

Although the invention is described in detail, the foregoing description is exemplary in all aspects, and the present invention is not limited thereto. A myriad of modifications not exemplified are understood to be envisaged without departing from the scope of the invention.

REFERENCE SIGNS LIST

1A: processing data storage unit

1B: construction gauge measurement diagram data storage unit

5: track data

6: construction gauge data

7: measurement point data

9: construction gauge

10: measurement point

13: rail surface

16: nearest point

18: plan view

19: left side view

20: right side view

24: construction gauge measurement diagram

29: feature on ground

33: side view

35: top plan view

39: feature of upper portion

47: development view

51: measurement point of feature on ground

52: measurement point on right of track

53: measurement point on left of track

102: plan view data

102k: plan view element data

103: left side view data

103k: left side view element data

104: right side view data

104k: right side view element data

DA: processing object data

DB: construction gauge measurement diagram data