Patent Publication Number: US-2022212214-A1

Title: Information Management Method, Identification Information Imparting Apparatus, and Information Management System

Description:
TECHNICAL FIELD 
     The present invention relates to an information management method, an identification information imparting apparatus, and an information management system in which a spray pattern formed by spraying paint on a target object is used as identification information of the target object. 
     BACKGROUND ART 
     In recent years, the use of unmanned flying objects (aerial vehicles) such as multicopters has been studied for the inspection of concrete walls of structures or the like such as tunnels, bridges, dams, buildings, etc. (for example, see Patent Literature 1). 
     However, even if an abnormality is found, the content of repair work is reviewed, and a construction plan for the repair work is made, it is difficult for a worker to identify an abnormal part from position information in the field. Thus, it is conceivable to add identification information such as characters, symbols, bar codes or the like. 
     CITATION LIST 
     Patent Literature 
     Patent Literature 1: Japanese Patent Application Laid-Open Publication No. 2017-124691 
     SUMMARY OF INVENTION 
     Technical Problem 
     However, it is difficult for a remotely operated machine, such as a multicopter, to write or digitally print existing characters and/or symbols on a structure as identification information. The reason is that, for example, with a multicopter, it is difficult to get close to a target object for printing or drawing that requires precision. 
     The inventors of the present invention have focused on the fact that spray patterns formed by spraying paint on target objects are not the same as one another and can identify the target objects like fingerprints, and have come up with an idea of using the spray patterns as identification information. 
     An object of the present invention is to provide an information management method, an identification information imparting apparatus, and an information management system that use a spray pattern capable of identifying a target object in a simple way. 
     Solution to Problem 
     In order to achieve the above object, an information management method of the present invention is characterized by: spraying a liquid material on a part of a target object to form an irregular spray pattern; storing a spray pattern image, which is obtained by photographing and imaging the spray pattern, and information about the target object in association with each other; and managing the information about the target object using the spray pattern image as identification information of the target object. 
     In addition, an identification information imparting apparatus of the present invention is an identification information imparting apparatus for imparting identification information to a target object, characterized by comprising:
         a liquid material ejection means configured to spray a liquid material onto the target object to form an irregular spray pattern; and   an imaging means configured to image the spray pattern and record it as a spray pattern image; wherein the spray pattern image is used as identification information of the target object.       

     The present invention can also be configured as follows. 
     1. The liquid material ejection means is provided with an aerosol container for ejecting the liquid material by gas pressure in the container. 
     2. The liquid material ejection means is provided with a spray control means configured to control ejection of the liquid material from the aerosol container. 
     3. The liquid material is ejected as a jet stream. 
     4. The liquid material ejection means and the imaging means are mounted on a moving object. 
     Moreover, another information management method of the present invention is characterized by:
         mounting an imaging means and a liquid material ejection means on a moving object;   moving the moving object to spray, upon finding a target region on a surface of a target object, a liquid material from the liquid material ejection means to a part of or a vicinity of the target region to form an irregular spray pattern;   imaging the target region including the spray pattern by the imaging means to obtain image information and to extract a spray pattern image from the image information;   obtaining position information of the moving object by a position information detection means; and   storing, in an information storage unit, the spray pattern image and target region information about the target region including the position information and image information of the target region in association with each other thereby to manage the information of the target region.       

     The present invention can also be configured as follows.
         1. The target region of the target object is a region with an abnormality.       

     Further, an information management system of the present invention is an information management system for managing information about a target region of a target object, characterized by comprising:
         a moving object on which an imaging means and a liquid material ejection means are mounted;   a spray pattern image obtaining means configured to execute processing of spraying a liquid material from the liquid material ejection means to the target object to form an irregular spray pattern, imaging the target region including the spray pattern by the imaging means to obtain image information, and extracting a spray pattern image from the image information;   a position information detection means configured to obtain position information of the moving object; and   a registration means configured to store, in an information storage unit, the spray pattern image and target region information about the target region including the position information and image information of the target region in association with each other.       

     1. Provision is further made for an information update means configured to update the target region information stored in the information storage means by adding an additional correction thereto. 
     2. Provision is further made for an information obtaining means configured to obtain the spray pattern image formed in the target region of the target object, and input the spray pattern image thus obtained thereby to obtain corresponding target region information from the information storage means. 
     3. The target region is a region of the target object in which there is an abnormal part, and provision is further made for an abnormality detection means configured to detect the abnormal part. 
     Advantageous Effects of Invention 
     According to the present invention, by using a spray pattern image of a liquid material as identification information, it is possible to manage information about a target object in a simple method of spraying the liquid material onto the target object. In particular, in cases where a moving object is used, even when it is difficult for the moving object to approach the target object, it is possible to easily impart identification information to the target object simply by spraying the liquid material thereto. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a conceptual diagram illustrating an overall configuration of an information management system according to an embodiment of the present invention. 
         FIG. 2(A)  is a block diagram of the information management system of  FIG. 1 , and  FIG. 2(B)  is an example of data stored in a data storage unit. 
         FIG. 3  illustrates an embodiment of an identification information imparting apparatus used in the information management system of  FIG. 1 , wherein  FIG. 3(A)  is a front view,  FIG. 3(B)  is a side view, and  FIG. 3(C)  is a view illustrating an aerosol container. 
         FIG. 4  is a diagram illustrating another configuration example of the identification information imparting apparatus. 
         FIG. 5(A)  is a control block diagram of a control unit of a flying object, and  FIG. 5(B)  is a control block diagram of a transmitter. 
         FIG. 6(A)  is a functional block diagram of an inspection marking terminal device, and  FIG. 6(B)  is a diagram illustrating a configuration example of a computer. 
         FIG. 7(A)  is a view illustrating an example of an inspection process in the case of a vertical wall, and  FIG. 7(B)  is a view illustrating an example of an inspection process in the case of an inclined wall. 
         FIG. 8(A)  is a functional block diagram of a management server, and  FIG. 8(B)  is a diagram illustrating a configuration example of a computer. 
         FIG. 9(A)  is a functional block diagram of a manager terminal device, and  FIG. 9(B)  is a diagram illustrating a configuration example of a computer. 
         FIG. 10(A)  is a functional block diagram of a worker terminal device, and  FIG. 10(B)  is a diagram illustrating a configuration example of a computer. 
         FIG. 11  is a flowchart illustrating an example of a flow of information between the manager terminal device and a management server in  FIG. 9 . 
         FIG. 12  is a flowchart illustrating an example of a flow of information between the worker terminal device and a management server in  FIG. 10 . 
     
    
    
     EMBODIMENTS FOR CARRYING OUT THE INVENTION 
     Hereinafter, the present invention will be described in detail on the basis of exemplary embodiments illustrated in the drawings. Dimensions, materials, and shapes of components, relative arrangements thereof, a hardware configuration of an apparatus, a software configuration, a processing flow, and the like described in the following embodiments are to be appropriately changed depending on a target object to which the present invention is applied, a configuration of the apparatus, and various conditions, and are not intended to limit the scope of the present invention to the following embodiments. 
     First, a conceptual configuration of an information management method and an information management system according to the present invention will be described by using  FIG. 1 . This embodiment will be described by taking, as an example, a case where a target object of the present invention is used for repair management of a concrete wall  600  of a structure such as a tunnel, a dam, an expressway, a bridge, a high-rise building or the like. 
     This information management is divided into three stages that include an inspection marking stage (I) for inspecting and marking an abnormal part of the concrete wall  600 , a registration stage (II) of construction management data for registering a construction content of the abnormal part, and a repair work stage (III) for performing repair work. Hereinafter, each of the stages will be described. 
     Inspection Marking Stage (I) 
     In the inspection marking stage (I), a repair target region Oi is marked by spraying a liquid material using an identification information imparting apparatus  1 . 
     The identification information imparting apparatus  1  includes a liquid material ejection device (liquid material ejection means)  10  and a camera  20  (imaging means), wherein the liquid material ejection device  10  serves to eject the liquid material to the repair target region Oi of the concrete wall  600  as the target object to form an irregular spray pattern. In this embodiment, the liquid material ejection device  10  and the camera  20  are mounted on a flying object  100  which is a moving object, and the concrete wall  600  is photographed and inspected by the camera  20  which is moving with the flying object  100 , and the liquid material such as paint is ejected to a part of or a vicinity of the repair target region Oi, in which an abnormal part C has been found, to form a spray pattern Mi. 
     The liquid material ejected from the liquid material ejection device  10  collides with the concrete wall  600  and scatters in all directions to spread along a wall surface thereof, or splashes by gravity, air resistance or the like after being ejected and before reaching the wall surface to form the spray pattern Mi. Since the liquid material scatters radially and irregularly due to an impact or the like, an outer periphery m of the spray pattern Mi has an irregular uneven shape. The shape of the outer periphery is not constant, and none of them are the same, and hence, the repair target region Oi can be identified like a fingerprint. 
     The liquid material is a substance in the form of liquid, gel, cream, or paste, and for example, a paint or the like is used. As the liquid material, a material is suitable which does not fall off due to rain or the like and which can be removed as needed. In addition, a material may be used which is colorless and transparent in visible light and which can be identified by ultraviolet rays or infrared rays, or in the case of a concrete wall of a tunnel, a luminous material may be used so as to be easily seen or checked by a worker. 
     The flight of the flying object  100  is remotely controlled by a transmitter  120 , and the liquid material ejection device  10  is controlled by an inspection marking terminal device  200  that constitutes a spray control means. In addition, the operation of the camera  20  is also controlled by the inspection marking terminal device  200 . 
     The transmitter  120  controls the flight of the flying object  100 , and basically controls the flight, including ascending, descending, turning, horizontal movement, by means of an operation device such as a lever. The exchange of signals between the flying object  100  and the transmitter  120  is communicated by wireless communication. 
     The inspection marking terminal device  200  controls the flying object  100 , the liquid material ejection device  10 , and the camera  20  via the transmitter  120 , thereby to perform a series of processes of inspection, marking, and photographing. In the figure, there is illustrated a state in which a photographed image is displayed on a display unit  213  of the inspection marking terminal device  200 . 
     That is, the flying object  100  is caused to fly along the concrete wall  600  while keeping a predetermined distance, so that the surface thereof is photographed by the camera  20  to detect the presence or absence of the abnormal part C such as a crack from an image thus photographed. 
     Subsequently, the repair target region Oi in which the abnormal part has been found is sprayed with the liquid material by the liquid material ejection device  10 , so that it is marked with the spray pattern Mi. 
     Then, the repair target region Oi thus marked is photographed by the camera  20 , and a spray pattern image Pi is extracted from the repair target region image Qi thus photographed and imaged, so that the spray pattern image Pi and repair target region information Ri related to the repair target region Oi including the repair target region image Qi are registered and managed in a management server  500  in association with each other. If the information of the repair target region image Qi and the information of the spray pattern image Pi are associated with each other, the photographing of the repair target region Oi may include the repair target region image Qi and the spray pattern image Pi in one image, or these pieces of information may be associated with each other in different images. Further, the repair target region Oi may be a set of a plurality of images. The repair target region information Ri includes, in addition to the repair target region image Qi, position information Si of the repair target region Oi and the like. The position information Si includes, for example, map information such as latitude, longitude, height, etc., the name of a structure provided with a concrete wall as a target object, and the like. 
     In the repair target region information Ri, the construction content including a repair work content for the abnormal part C is further registered, and the construction content is registered in the management data registration stage (II) which will be described below. 
     Registration Stage (II) of Construction Management Data 
     In the registration stage of the construction management data, a construction manager accesses the management server  500  from a manager terminal device  300 , and determines and registers the construction content such as a repair method of the abnormal part such as a crack or the like, by referring to the repair target region image Qi. 
     Repair Work Stage (III) 
     In the repair work stage (III), the worker photographs the spray pattern Mi by means of a worker terminal device  400  at the site, transmits the spray pattern image Pi thus photographed to the management server  500 , obtains the construction content of the corresponding repair target region Oi, and performs the repair work based on the construction content. 
       FIG. 2(A)  illustrates a system configuration of the inspection marking terminal device  200 , the manager terminal device  300 , the worker terminal device  400 , and the management server  500 , which have been mentioned above. 
     The management server  500  includes a data storage unit (information storage unit)  501  in which the spray pattern image Pi and the repair target region information Ri related to the repair target region are stored in association with each other, and the inspection marking terminal device  200 , the manager terminal device  300 , and the worker terminal device  400  can communicate with one another via a communication network N such as the Internet or the like. 
       FIG. 2(B)  illustrates an example of data stored in a data storage unit  501 . 
     That is, the repair target region information Ri is stored in association with the spray pattern image Pi, and the repair target region image Qi including a repair target part, the position information Si, the construction content Ti and the like are included as the repair target region information Ri. 
     Next, the identification information imparting apparatus used in the inspection marking stage of  FIG. 1  will be described in more detail. 
       FIG. 3  illustrates the identification information imparting apparatus. 
     This identification information imparting apparatus  1  includes the flying object  100 , and the liquid material ejection device  10  and the camera  20  mounted on the unmanned flying object. 
     Flying Object  100   
     In  FIG. 3 , the flying object  100  is a so-called multicopter, and has an airframe  101  that includes a main body portion  102  and a plurality of arm portions  103  extending radially from the main body portion  102 , wherein rotor blades  104  are provided at distal ends of the arm portions  103  via motors  105 , respectively. In the illustrated example, the rotor blades  104  are illustrated at two locations on the left and right, but in the sense that there are a plurality of rotor blades  104 , various known multicopters, such as three (tricopter), four (quadcopter), six (hexacopter), etc., can be applied. 
     Liquid Material Ejection Device  10   
     The liquid material ejection device  10  is configured to include an aerosol container  11  that is mounted on the outside of the airframe  101  of the flying object  100 , an actuator  13  with a nozzle that is connected to a stem  12  provided with a discharge passage of the aerosol container  11 , and an opening and closing mechanism  30  that constitutes an ejection control unit adapted to push the stem  12  through the nozzle-equipped actuator  13  to open the discharge passage. 
     The aerosol container  11  is a container that ejects a liquid material as a content by the gas pressure of a liquefied gas or a compressed gas filled therein, and an existing aerosol container  11  made of metal or pressure-resistant plastic can be applied thereto. The aerosol container  11  generally sprays the liquid material in the form of a mist from the nozzle by attaching the actuator to the stem  12 , but in the present invention, the purpose is to form a spray pattern, and the liquid material is ejected as a linear jet stream. Although the stem  12  alone can be used to eject the liquid material as a jet stream, it is necessary to push the stem  12  in, and hence in this embodiment, the actuator  13  with the flanged nozzle is connected thereto, and the stem  12  is pushed in by means of the opening and closing mechanism  30  through a flange  14  of the nozzle-equipped actuator  13 , so that an unillustrated internal valve is opened to eject paint. Here, note that the nozzle is provided with an orifice, which allows a better jet stream to be ejected than in the case of only the stem. 
     In the illustrated example, the aerosol container  11  is mounted in a state where a central axis of the aerosol container  11  (a central axis of its body) is horizontally oriented by using a space on a lower surface of the airframe  101  of the flying object  100 . A mounting device  50  is provided on the lower surface of the airframe  101 , so that the aerosol container is mounted on the airframe  101  through the mounting device  50 . The mounting device  50  shall be of a structure that can be attached to the airframe, and shall be firmly fixed by bolts or other screw fastening, band fastening, adhesive fastening, etc. The flying object  100  is detachably mounted on the mounting device  50  by a holding member  51  such as a clamper or the like. 
     The camera  20  is mounted on the front side of the airframe  101  so as to face forward with its photographing direction (optical axis direction of the lens) aligned with the direction of ejection by the aerosol container  11 . 
     As the form of the propellant and the content of the aerosol container  11 , an isolated type is used in which the liquid material is contained in an inner bag and the propellant is contained between the outer periphery of the inner bag and the inner periphery of the container body. In the case of the isolated type, ejection can be made from the aerosol container  11  even when the aerosol container  11  is in a horizontal orientation (the stem is positioned horizontally) or a downward orientation (the stem is positioned downward). 
     However, the present invention is not limited to the isolated type, and a two-phase type or three-phase type container with a dip tube can be applied when the posture of the aerosol container  11  at the time of liquid ejection is used with the stem  12  facing upward, and a two-phase type or three-phase type container having no dip tube can be applied when the posture of the aerosol container  11  is used with the stem  12  facing downward. 
     Here, note that liquefied gases such as general hydrocarbons (liquefied petroleum gas) (LPG), dimethyl ether (DME), and fluorinated hydrocarbons (HFO-1234ze), as well as compressed gases such as carbon dioxide (CO 2 ), nitrogen (N 2 ), and nitrous oxide (N 2 O) can be used as propellants, but non-flammable fluorinated hydrocarbons, carbon dioxide, nitrogen, nitrous oxide, etc., are suitable, and nitrogen is particularly suitable, considering its environmental impact. 
     Opening and Closing Mechanism  30   
     The opening and closing mechanism  30  includes a pressing member  31  with an engaging portion  31   a  that engages with the flange  14  of the nozzle-equipped actuator  13 , and a driving unit  32  which is a driving means, such as a solenoid, a linear motor or the like, that linearly drives the pressing member  31 , wherein the pressing member  31  is driven in the axial direction of the aerosol container by means of the driving unit  32 , whereby the stem  12  is driven in the direction of being pushed into the container via the pressing member  31  and the nozzle-equipped actuator  13 . The drive unit  32  may be any mechanism that drives in a linear direction, and may linearly drive directly by a linear motor, a solenoid or the like, or may linearly drive via a motion conversion mechanism, such as a cam, a screw feed mechanism or the like, that converts the rotational motion of a rotary motor into a linear direction. 
     Other Mounting Examples of Liquid Material Ejection Device  10  and Camera  20   
       FIG. 4  illustrates an example in which the liquid material ejection device  10  and the camera  20  are mounted on the flying object  100  via a gimbal  40 . 
     The gimbal  40  is a pedestal having degrees of freedom of rotation about three mutually orthogonal axes, and detects an inclination of each rotation axis by a sensor and corrects the inclination of the rotation axis by a motor, and various known devices can be applied to the gimbal  40 . By using the gimbal  40 , the camera  20  and the liquid material ejection device  10  can be stabilized, and the camera  20  and the liquid material ejection device  10  can be tilted. 
       FIG. 4(A)  illustrates an example in which the liquid material ejection device  10  is attached to the camera  20  mounted via a gimbal  40 . The liquid material ejection device  10  is held by utilizing a frame of the gimbal  40  that holds the camera  20 . In this way, the camera  20  and the liquid material ejection device  10  are moved in synchronization with each other by means of the gimbal  40 . 
       FIG. 4(B)  illustrates an example in which the liquid material ejection device  10  and the camera  20  are attached to the gimbal  40  in a parallel state. In this case, too, the camera  20  and the liquid material ejection device  10  are moved in synchronization with each other by means of the gimbal  40 . 
     In  FIG. 4(C) , the liquid material ejection device  10  is mounted on the lower surface of the airframe  101  side by side with the camera  20  to balance the center of gravity, and a nozzle  17  is connected to an ejection port of the liquid material ejection device  10  via a flexible extension tube  16 , so that the nozzle  17  is attached to the camera  20  held by the gimbal  40 . In this case, the nozzle  17  is moved in synchronization with the camera  20  by means of the gimbal  40 . 
     Control Unit of Flying Object 
       FIG. 5(A)  is a control block diagram of a control unit provided in the flying object  100 . 
     That is, the control unit  110  of the flying object includes a transceiver  110 E that communicates with the transmitter  120 , a flight control unit  110 A that controls the flight of the flying object  100 , a camera control unit  110 B that controls the operation of the camera  20 , a gimbal control unit  110 C that controls the gimbal  40  in the case where the gimbal  40  is provided, and an ejection control unit  110 D that controls the ejection timing and the ejection period of time of the opening and closing mechanism  30 . 
     The flight control unit  110 A calculates a control signal to the motor  105  of each of the rotor blades  104  based on detection information from sensors  112  such as gyro sensors, acceleration sensors, geomagnetic sensors, range sensors, etc., position information from a GPS  113 , command signals from the transmitter  120 , or command signals transmitted from inspection marking terminal device  200  via the transmitter  120 , thereby to control the flight of the flying object  100 . In the figure, only one motor  105  is described for simplification, but a plurality of motors are provided. 
     The camera control unit  110 B executes a photographing or imaging operation by the camera  20  based on the command signals transmitted from the inspection marking terminal device  200  via the transmitter  120 . 
     The ejection control unit  110 D outputs ejection and stop signals to the driving unit  32  of the opening and closing mechanism  30  based on the command signals transmitted from the inspection marking terminal device  200  via the transmitter  120 , thereby to control the ejection operation of the liquid material ejection device  10 . 
     Each control unit is described as a functional block that executes a respective process, and although not particularly described, a computer can execute control processes of flight control, camera control, and ejection operation by performing arithmetic processing by a CPU which is a hardware resource provided in the control unit  110 , on the basis of a program stored in a memory unit. 
       FIG. 5(B)  is a control block diagram of the transmitter  120 . 
     That is, it has a control unit  120 A, a transceiver unit  120 B that transmits signals to the transceiver unit  110 E of the control unit  110  of the flying object via an antenna, an operation unit  120 C such as a stick or the like, and a communication interface  120 D (hereinafter, I/F) that communicates with the inspection marking terminal device  200 . 
     Inspection Marking Terminal Device  200   
       FIG. 6(A)  is a functional block diagram of the inspection marking terminal device. 
     That is, it includes an abnormality detection unit (abnormality detection means)  201  for an inspection target region, a marking processing unit  202  that operates the liquid material ejection device  10  to perform marking processing, an image obtaining unit  203  that obtains an image of the target region marked, a position information obtaining unit (position information detection means)  204  that obtains position information, and a transmission processing unit  205  that transmits the spray pattern image, the position information, and the target region image to the management server  500  in association with each other. 
     In the image obtaining unit  203 , the spray pattern image is extracted from the image of the target region. 
     The position information obtaining unit  204  obtains information about the location of the concrete wall  600  and position information about a spraying position. 
     This inspection marking terminal device  200  constitutes a spray pattern image obtaining means of the information management system of the present invention. 
       FIG. 6(B)  illustrates the configuration of a computer that constitutes the inspection marking terminal device  200 , and  FIG. 1  illustrates an information terminal device of a general tablet type. 
     The computer has a general configuration, and includes a CPU (Central Processing Unit)  211 , a main storage device  212  composed of a ROM and a RAM, a display unit  213  such as for example a touch panel type LCD or the like, a communication I/F  214  for connecting to the transmitter  120 , an input device  215  for inputting information, and a communication network I/F  216  for accessing the management server  500  via a relay station and a communication network such as the Internet. 
     The processes of the abnormality detection unit  201 , the marking processing unit  202 , the image obtaining unit  203 , the position information obtaining unit  204 , and the transmission processing unit  205  are performed by executing a program stored in the main storage device  212  or a program stored in the management server  500  via the communication network I/F  216 . 
     Note that the inspection marking terminal device  200  can use a camera controller that is provided separately from the transmitter  120  and includes an operation unit for controlling the operation of the camera  20 , or can be provided integrally with the transmitter, and any combination of devices can be used. 
       FIG. 7  illustrates an example of an inspection procedure of the concrete wall. 
       FIG. 7(A)  illustrates a vertical wall, in which the concrete wall  600  is divided into a plurality of inspection regions Di in a grid pattern in the vertical and horizontal directions, and inspection is performed by repeating ascent and descent for each column. Marking Processing Process 
     When the inspection is started, the processing of the abnormality detection unit  201  of the inspection marking terminal device  200  is executed. That is, the CPU  211  reads out an inspection processing program from the main storage device  212  to execute a series of inspection processing procedures. 
     When inspection processing is executed, the flying object  100  flies to a first inspection region Di and enters a hovering state, so that it operates the camera  20  to photograph the inspection region Di thereby to obtain an image for inspection. The image from the camera  20  is received by the transmitter  120  through wireless communication between the flying object  100  and the transmitter  120 , and is transmitted from the transmitter  120  to the inspection marking terminal device  200  through the communication I/F  214 . 
     Then, the presence or absence of an abnormal part is detected from the inspection image thus obtained. The abnormal part may be detected, for example, by recognizing the width of a crack and determining that the crack is abnormal when the width is equal to or larger than a predetermined width, or by using a determination means that uses Al. 
     When there is no abnormal part, the inspection region is moved to the next inspection region. 
     When there is an abnormal part, the processing of the marking processing unit  202  is executed, so that a liquid material ejection command is transmitted to activate the liquid material ejection device  10  to spray the liquid material on the wall surface of the inspection region Di thereby to form the spray pattern Mi. 
     When the marking is completed, the processing of the image obtaining unit  203  is executed, and a photographing command signal is transmitted so that the camera  20  is activated to obtain an image of the target region to which the spray pattern Mi is attached. The image thus photographed is transmitted to the inspection marking terminal device  200  via the transmitter  120  in the same manner as the inspection image. 
     Subsequently, the processing of the transmission processing unit  205  is executed, so that the spray pattern image Pi is extracted from the image of the inspection region Di obtained, and is transmitted to the management server  500  in association with the image and the position information of the inspection region Di to which the spray pattern is attached, and the inspection region is then moved to the next inspection region. 
     When the liquid material is ejected, a reaction force in a direction opposite to the direction of the ejection of the liquid material acts on the flying object  100  due to the momentum of the ejected liquid material, but since the amount of liquid required to form the spray pattern is small, this does not have any effect. 
     In the Case of the Concrete Wall  600  being an Inclined Surface 
       FIG. 7(B)  illustrates an example of an inspection procedure in the case of an inclined wall such as a tunnel or the like. 
     In this case, by using the flying object  100  with the camera  20  and the liquid material ejection device  10  mounted thereon via the gimbal  40 , as illustrated in  FIG. 4 , the camera  20  and the liquid material ejection device  10  can be tilted in accordance with the inclination of the wall surface. 
     For example, if the flying object  100  is caused to rise while maintaining a certain distance from the wall surface by using a distance sensor, a flight trajectory thereof can be known, and if an optical axis of the camera  20  is aligned perpendicular to the flight trajectory by means of the gimbal  40 , the directions of the camera  20  and the nozzle-equipped actuator  13  of the liquid material ejection device  10  can be oriented perpendicular to the wall surface. 
     Note that in  FIG. 7 , each inspection region Di is assumed to be photographed or imaged in a state of hovering at a certain position to detect an abnormal part, but it is also possible for the flying object to fly continuously and stop at the time of detecting an abnormal part to perform imaging and marking processing. 
     Management Server  500   
       FIG. 8(A)  illustrates a functional block diagram of the management server  500 . 
     That is, it includes the data storage unit  501 , a new data registration processing unit (registration means)  502 , a management data registration processing unit  503 , a work data search processing unit  504 , and a transceiver unit  505 . 
     The data storage unit  501  stores the spray pattern image Pi, which is image information of the irregular spray pattern Mi formed by spraying the liquid material onto the repair target region, and the repair target region information such as the repair target region image Qi, which is image information of the corresponding repair target region Oi, position information or the like, in association with each other. 
     The new data registration processing unit  502  registers, in the data storage unit  501 , the spray pattern image Pi, the repair target region image Qi, the position information, and the like transmitted from the inspection marking terminal device  200  in association with each other. 
     In response to a data request transmitted from the manager terminal device  300 , the management data registration processing unit  503  obtains the corresponding spray pattern image Pi and repair target region information from the data storage unit  501 , and transmits them from the transceiver unit  505  to the manager terminal device  300 . 
     In response to a data request from the worker terminal device  400 , the work data search processing unit  504  searches the data storage unit  501  for information of the repair target region corresponding to the spray pattern image Pi, obtains corresponding repair target region information, and transmits it to the worker terminal device  400 . 
       FIG. 8(B)  illustrates an example of a hardware configuration of a computer that implements the management server  500 . 
     That is, a CPU  511 , a main storage device  512  composed of a ROM and a RAM, a net communication I/F  513 , an external storage device  514  such as a hard disk or the like, etc., are provided. 
     The external storage device  514  is used as the data storage unit  501  illustrated in  FIG. 8(A) . In addition, each processing unit is operated and processed by the CPU  511  based on a program stored in the main storage device  512 , which is a hardware resource, to realize each function. That is, the processes of the new data registration processing unit  502 , the management data registration processing unit  503 , and the work data search processing unit  504  are performed by executing the program stored in the main storage device  512 . 
     Next, the registration stage of the construction management data will be described. 
       FIG. 9(A)  is a functional block diagram of the manager terminal device  300 . 
     That is, the manager terminal device  300  includes a request transmission processing unit  301  that transmits a search request for repair target region information to the management server  500 , a reception processing unit  302  that receives the repair target region information from the management server  500 , a management data creation processing unit  303  that creates management data such as a construction content or the like, and a data transmission processing unit  304  that transmits the created data. 
     This manager terminal device  300  constitutes an information updating means for updating data by adding and correcting target object information stored in the data storage unit  501 . 
       FIG. 9(B)  illustrates a hardware configuration of a computer that realizes the manager terminal device  300 . 
     That is, a CPU  311 , a main storage device  312  composed of a ROM and a RAM, a display unit  313  such as an LCD or the like, a net communication I/F  314  for accessing the management server  500 , an input device  315  for inputting information, and the like are provided. 
     Each processing unit illustrated in  FIG. 9(A)  is operated and processed by the CPU  311  based on a program stored in the main storage device  312 , which is a hardware resource, to realize each function. That is, the processes of the request transmission processing unit  301 , the reception processing unit  302 , the management data creation processing unit  303 , and the data transmission processing unit  304  are performed by executing the program stored in the main storage device  312 . 
       FIG. 11  illustrates a processing procedure between the manager terminal device  300  and the management server  500 . 
     That is, the manager accesses the management server  500  from the manager terminal device  300 , and transmits a search request for target region information for which a construction content is to be registered (S 31 ). The search request can identify the repair target region by identifying, for example, an inspection place or location such as a tunnel, a dam, a bridge or the like, or an inspection date or the like. 
     In the management server  500 , upon receiving the search request at the transceiver unit  505  (S 32 ), the processing of the management data registration processing unit  503  is executed to search the data storage unit  501  for repair target region information (S 33 ), and the repair target region information thus searched or extracted is transmitted to the manager terminal device  300  (S 34 ). At the side of the manager terminal device  300 , upon receiving the repair target region information (S 35 ), the repair target region information is displayed on the display unit  313 . The manager checks an abnormal part such as a crack or the like from a repair target region image displayed, and inputs an appropriate construction content as additional information to create additional data (S 36 ). When the additional data is created, the additional data is transmitted to the management server  500  (S 37 ), and is registered in the information storage unit  501  in the management server  500  (S 38 ). 
     Stage of Repair Work 
     The worker carries the worker terminal device  400  provided with a camera  416 , and transmits to the management server  500  the spray pattern image Pi obtained by photographing and imaging the spray pattern Mi attached to the concrete wall  600  at the work site by the camera  416 , and requests corresponding target region information. Then, the target region information transmitted from the management server  500  in response to the request is received and displayed on a display unit  413 . 
       FIG. 10(A)  is a functional block diagram of the worker terminal device  400 . 
     That is, the worker terminal device  400  includes an image obtaining processing unit  401  that obtains a spray pattern image, a request transmission processing unit  402  that transmits a search request for corresponding repair target region information with the spray pattern image attached thereto to the management server  500 , a reception processing unit  403  that receives the repair target region information from the management server  500 , and a display processing unit  404  that displays the repair target region information on the display unit  413 . 
     This worker terminal device  400  constitutes an information obtaining means that obtains corresponding target object information from the data storage unit of the information management system of the present invention. 
       FIG. 10(B)  illustrates a hardware configuration of a computer that realizes the worker terminal device  400 . 
     That is, a CPU  411 , a main storage device  412  composed of a ROM and a RAM, the display unit  413  such as an LCD or the like, a net communication I/F  414  for accessing the management server  500 , an input device  415  for inputting information, the camera  416 , and a GPS  417  are provided. 
     The processes of the image obtaining processing unit  401 , the request transmission processing unit  402 , the reception processing unit  403 , and the display processing unit  404 , which are illustrated in  FIG. 10(A) , are performed by executing a program stored in the main storage device  212 . 
       FIG. 12  illustrates a flow of information between the worker terminal device  400  and the management server  500 . 
     That is, when finding the spray pattern Mi at the work site, the worker photographs the spray pattern with the camera  416  to obtain a spray pattern image (S 41 ), accesses the management server  500 , and transmits a search request for repair target region information with the photographed spray pattern image attached thereto. In addition, position information obtained by the GPS  417 , inspection date and time, and the like may be added to the search request (S 42 ). 
     In the management server  500 , upon receiving the search request at the transceiver unit  505  (S 43 ), a program for the work data search processing unit  504  is executed to search the data storage unit  501  for repair target region information (S 44 ), and the repair target region information thus searched or extracted is transmitted to the worker terminal device  400  (S 45 ). At the side of the worker terminal device  400 , when the target region information is received (S 46 ), repair target region information including a construction content is displayed on the display unit  413  (S 47 ). The worker can check or confirm the site by looking at the spray pattern image and the repair target region image displayed on the display unit  413  as well as the spray pattern and the abnormal part of the wall surface at the site, and perform the repair work according to the construction content displayed. 
     In this way, the worker can obtain information including the construction content from the management server  500  by photographing the spray pattern Mi with the camera  416  and inquiring to the management server  500 , which simplifies the confirmation work and eliminates the need for complicated work of carrying documents describing the construction content. 
     Other Embodiments 
     Here, note that in the above-described embodiment, the abnormality detection means is provided as the target region detection unit, but the abnormality detection means is not necessarily required. For example, an inspector may visually monitor images taken from the flying object, and execute marking processing if a defective part is found. 
     Also, without detecting a specific target region, all target regions may be marked and used as identification information of the target regions. 
     In addition, in the above-described embodiment, the aerosol container is mounted on the airframe in an exposed state, but it may be mounted on the flying object in a state of being housed in a sleeve which is a housing container. Moreover, in the above-described embodiment, an example has been described in which the aerosol container  11  is mounted outside the airframe  101 , but the aerosol container  11  may be configured such that it is placed inside the airframe  101 , with the nozzle  17  being connected thereto via the extension tube  16 , as illustrated in  FIG. 4(C) . 
     Further, in the above-described embodiment, an example has also been described in which a multicopter is used as the flying object on which the liquid material ejection device is mounted, but an unmanned aerial vehicle using propellers may be used, instead of the flying object using rotor blades (rotors). Furthermore, the present invention is not limited to unmanned flying objects, but can also be applied to unmanned or manned moving objects that travel on a road surface. 
     Also, in the above-described embodiment, a concrete wall has been described as an example of a target of the present invention, but the invention is not limited to such a concrete wall, and can be widely used as identification information of various target objects such as glass of buildings, panels of solar power generation facilities, trees, etc. 
     DESCRIPTION OF REFERENCE SIGNS 
     
         
         
           
               10  liquid material ejection device (liquid material ejection means), 
               11  aerosol container,
             12  stem,  13  actuator with nozzle,  14  flange,     16  extension tube,  17  nozzle,     30  opening and closing mechanism,  31  pressing member,  31   a  engaging portion,  32  driving unit,   
         
               20  camera, 
               40  gimbal, 
               50  mounting device,  51  holding member, 
               100  flying object,
             101  airframe,  102  body portion,  103  arm portions,     104  rotor blades,  105  motors,   
         
               110  control unit,
             110 A flight control unit,  1106  camera control unit,     110 C gimbal control unit,     110 D ejection control unit (spray control means),     110 E transceiver unit,  112  sensors,  113  GPS,     120  transmitter,  120 A control unit,  1206  transceiver unit,     120 C operation unit,  120 D communication interface,   
         
               200  inspection marking terminal device,
             201  abnormality detection unit (abnormality detection means),  202  marking processing unit,  203  image obtaining unit,  204  position information obtaining unit (position information detection means),  205  transmission processing unit,   
         
               211  CPU,  212  main storage device,  213  display unit, 
               214  communication I/F,  215  input device,  216  communication network I/F, 
               300  manager terminal device,
             301  request transmission processing unit,  302  reception processing unit,  303  management data creation processing unit,  304  data transmission processing unit,   
         
               311  CPU,  312  main storage device,  313  display unit, 
               314  net communication I/F,  315  input device, 
               400  worker terminal device,
             401  image obtaining processing unit,  402  request transmission processing unit,  403  reception processing unit,  404  display processing unit,   
         
               411  CPU,  412  main storage device,  413  display unit,  414  net communication I/F,  415  input device,  416  camera,  417  GPS 
               500  management server,
             501  data storage unit (information storage means),  502  new data registration processing unit (registration means),  503  management data registration processing unit,  504  work data search processing unit,  505  transceiver unit,   
         
               511  CPU,  512  main storage device,  513  net communication I/F, 
               514  external storage device, 
               600  concrete wall (target object), 
             I first stage, II second stage, Ill third stage, 
             Mi spray pattern, m outer periphery, 
             Oi repair target region (target object), 
             Pi spray pattern image, 
             Qi repair target region image, 
             Ri repair target region information, 
             Si position information, 
             Ti construction content, 
             N communication network 
             Di inspection region