Abstract:
A deposition device includes a deposition container with an intermediate plate, a sensor mat positioned on the deposition container, where the sensor mat includes at least two locating recesses for positioning the sensor mat within an area of a maximum permissible movement, and at least one detection sublayer. The intermediate plate includes at least one passthrough opening to allow an electrical connection device connected to the sensor mat to pass through, so that the sensor mat can be connected to a circuit board disposed in an electronics container space. The intermediate plate further includes locating pins arranged on the intermediate plate and protruding into a locating recess. The cross section of the locating pins is such that over the entire length thereof the locating recess permits local movability of the sensor mat in all directions in the planar extension thereof, within the maximum permissible range of movement.

Description:
FIELD OF THE INVENTION 
       [0001]    The present invention relates generally to sensors, and more particularly relates to a sensor device and a deposition device having a sensor device. 
       BACKGROUND OF THE INVENTION 
       [0002]    Deposition devices for depositing objects having a flat, pressure-sensitive sensor device for capturing the deposition of objects on the deposition device are known from the general prior art. They have not been adapted to specific application environments. 
       SUMMARY OF THE INVENTION 
       [0003]    The object of the invention is to provide a sensor device for capturing the deposition of objects over an area, and a deposition device equipped with such a sensor device, which is usable to an advantage in refrigerators in each case. 
         [0004]    This object is solved with the features of the independent claims. Additional embodiments of the invention are described in the claims dependent, respectively, on each of the independent claims. 
         [0005]    According to one aspect of the invention, a sensor device is provided, including a base plate, a sensor plate positioned on the base plate, wherein the sensor plate has: at least one locating recess for positioning the sensor plate within an area of maximum permissible movement on the base plate; at least one detection sublayer; and one connection device for connecting the sensor plate electrically to an evaluation device; wherein the base plate comprises at least one locating lug, the lengthwise direction of which projects away from the base plate in a direction perpendicular to a major surface of the sensor device and the locating lugs are arranged on the base plate and are of such construction that each locating lug protrudes into a locating recess, the cross section of the lugs being such that, over the entire length thereof, the locating recess permits local movement of the sensor plate in all directions in a planar extension thereof, within a maximum permissible range of movement. 
         [0006]    According to another embodiment of the sensor device, it is provided that the connection device comprises a ribbon cable and a plug device arranged thereon for plugging into a connection device of the evaluation device. 
         [0007]    According to another embodiment of the sensor device, it is provided that the connection device comprises a plug device conformed directly on the sensor plate for plugging into a connection device of the evaluation device. 
         [0008]    According to another embodiment of the sensor device, it is provided that the sensor plate includes of a base plate, a separator layer disposed thereon, and a conductor layer disposed on the separator layer. 
         [0009]    According to one aspect of the invention, a deposition device is provided that comprises: a containing device having a bottom plate and a base plate located above the bottom plate in the direction perpendicular to the major surface of the containing device, a peripheral side wall that laterally delimits an electronics container space located between the bottom plate and the base plate and extends from the base plate to create a lateral delimitation of a sensor container space located above the base plate; and a sensor plate located on the base plate, wherein the sensor plate comprises at least two locating recesses for positioning the sensor plate within a maximum permissible range of movement, and at least one detection sublayer. The base plate or the side wall has at least one passthrough opening through which an electrical connection device connected to the sensor plate is routed to enable a connection between the sensor plate and an evaluation device or conductor plate arranged in the electronics container space. Furthermore, the base plate comprises at least one locating lug, which projects lengthwise away from the base plate in the direction perpendicular to the major surface of the containing device, wherein the locating lugs are arranged on the base plate in such manner and are constructed in such manner that each locating lug protrudes into one locating recess, and the cross section of the lugs is such over the entire length thereof the locating recess permits local movement of the sensor plate in all directions in the planar extension thereof, within a maximum permissible range of movement, and the planar extension of the sensor plate is configured in such manner that in order to prevent the lateral edge thereof from coming into contact with the side wall due to thermal expansion of the sensor plate, the surrounding lateral edge is located at a predefined minimum distance from the side wall. 
         [0010]    According to a further embodiment of the deposition device, it is provided that each of the at least two locating lugs is cylindrical in shape. 
         [0011]    According to a further embodiment of the deposition device, in this context it is provided that the locating lugs are constructed integrally with the base plate. 
         [0012]    According to a further embodiment of the deposition device, it is provided that each of the at least two locating recesses has a circular or cylindrical cross section. 
         [0013]    According to a further embodiment of the deposition device, it is provided that the sensor plate comprises a baseplate and at least one pressure-sensitive detection sublayer integrated in the sensor plate. 
         [0014]    According to a further embodiment of the deposition device, in this context it is provided that the sensor plate comprises at least two pressure-sensitive detection sublayers integrated in the base plate, and the sensor plate is furnished with slits that extend from one lateral edge of the base plate over more than half of the portion of the sensor plate that is located between the detection sublayers. 
         [0015]    According to a further embodiment of the deposition device, in this context it is provided that the sensor plate is constructed from a support plate and the base plate, with a lower plate being furnished with the locating recesses, and locating lugs only extending inside the support plate. 
         [0016]    According to a further embodiment of the deposition device, in this context it is provided that the locating recesses are only formed in the lower plate, and the locating lugs only extending inside the locating recesses. The base plate or the lower plate may be of a rigid construction. 
         [0017]    According to a further embodiment of the deposition device, it is provided that each of the pressure-sensitive detection sublayers has two interlocking, crenellated foils which are positioned in the respective detection sublayers to ensure that the sublayers are electrically connected as a capacitor, and which may be electrically connected as capacitors. 
         [0018]    According to a further embodiment of the deposition device, it is provided that the covering device covers the sensor plate, and the covering device is disposed on the sensor plate or on an upper edge surface of the side wall. 
         [0019]    According to a further embodiment of the deposition device, in this context it is provided that the covering device has the form of a covering film or a flexible cover plate. 
         [0020]    According to a further embodiment of the deposition device, it is provided that the containing device has a ledge that extends around the inner surface of the side wall, and on which the base plate is supported. 
         [0021]    According to a further embodiment of the deposition device, it is provided that the containing device and the base plate are manufactured as a single unit. 
         [0022]    According to a further embodiment of the deposition device, it is provided that the passthrough opening is furnished with an edge recess on one edge section of the side wall. 
         [0023]    According to a further embodiment of the deposition device, it is provided that the passthrough opening is furnished with a window recess in the side wall. 
         [0024]    According to a further embodiment of the deposition device, it is provided that the passthrough opening is furnished with an edge recess on an edge portion of the base plate. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0025]    In the following, embodiments of the invention will be described with reference to the accompanying figures, in which: 
           [0026]      FIG. 1  is an exploded perspective view of a first embodiment of the deposition device according to the invention, wherein the represented embodiment of the deposition device comprises a containing device and a sensor device, which is constructed from a base plate having a plurality of locating lugs and a sensor plate having a plurality of locating recesses, each of which is designed to accommodate one of the locating lugs; 
           [0027]      FIG. 2  is an embodiment of the sensor device according to the invention, which is integrated in the deposition device of  FIG. 1 ; 
           [0028]      FIG. 3  is a perspective view of a first embodiment of the sensor plate, which is constructed from a base plate, a separator layer, a conductor layer and a connection device that is connected to the base plate, wherein the base plate of at least one detection sublayer comprises an arrangement of conductor paths; 
           [0029]      FIG. 4  is a perspective view of a second embodiment of the sensor plate, wherein the sensor plate illustrated comprises a different kind of connection device than the sensor plate of  FIG. 2 ; 
           [0030]      FIG. 5  is an exploded perspective view of a further embodiment of the deposition device according to the invention, wherein the deposition device illustrated comprises a different kind of containing device than the deposition device of  FIG. 1 ; 
           [0031]      FIG. 6  is an exploded perspective view of a further embodiment of the deposition device according to the invention, wherein the deposition device illustrated comprises a different kind of sensor device than the deposition device of  FIG. 1 , in that it is constructed from a base plate having a single locating lug and a sensor plate having a single locating recess for accommodating the locating lug; 
           [0032]      FIG. 7  is an exploded perspective view of a further embodiment of the deposition device according to the invention, wherein the deposition device illustrated comprises a different kind of sensor device than the deposition device of  FIG. 1 ; 
           [0033]      FIG. 8  is an exploded perspective view of a further embodiment of the deposition device according to the invention, wherein the deposition device illustrated comprises a different kind of containing device than the deposition device of  FIG. 1 ; 
           [0034]      FIG. 9  is an assembled perspective view of the sensor device of  FIG. 1  in the assembled state; 
           [0035]      FIG. 10  is a perspective view of an embodiment of the sensor plate which, unlike the embodiment shown in  FIGS. 1 to 9 , is furnished with slits extending between the detection sublayers; 
           [0036]      FIG. 11  is a perspective view of a variant of the sensor plate of  FIG. 10 ; 
           [0037]      FIG. 12  is a perspective view of a further variant of the sensor plate; 
           [0038]      FIG. 13   a  is a perspective view of an embodiment of a portion of a sensor plate; 
           [0039]      FIG. 13   b  is a a cross section view of the portion of the sensor plate of  FIG. 13   a , along line L 13 -L 13  in  FIG. 13   a;    
           [0040]      FIG. 14  is a perspective view of an embodiment of the base plate; 
           [0041]      FIGS. 15 to 17  show various stages of assembly of the deposition device of  FIG. 1  with a base plate according to  FIG. 14 , wherein a cover film is placed on top of it; 
           [0042]      FIG. 18  is a perspective view showing the deposition device of  FIG. 16  without a cover film; 
           [0043]      FIG. 19  is a disassembled view of the deposition device of  FIG. 17 ; 
           [0044]      FIG. 20  is a perspective view showing a combination of a sensor device according to  FIG. 2  and an evaluation device that is attached to a lower surface of the base plate; 
           [0045]      FIG. 21  is a perspective view showing an embodiment of a deposition device with the combination of a sensor device and an evaluation device of  FIG. 20 ; 
           [0046]      FIG. 22  is a perspective exploded view showing a variant of the embodiment of the deposition device of  FIG. 1 , wherein the sensor plate comprises a plug device according to  FIG. 4 ; 
           [0047]      FIG. 23  is a perspective view showing a sensor device in the assembled state, wherein the sensor plate comprises a plug device according to  FIG. 4 ; and 
           [0048]      FIG. 24  is a perspective view showing a further embodiment of the deposition device. 
       
    
    
       [0049]    In the figures, components or features of the objects represented that have equivalent or identical functions to each other may be identified with the same reference sign in different figures. 
       DETAILED DESCRIPTION 
       [0050]      FIGS. 1 ,  5 ,  6  and  7  show different embodiments of the deposition device  1  according to the invention with a sensor device  10 . The sensor device  10  consists of a base plate  20  and a sensor plate  100 , and is constructed in the manner of an embodiment according to the invention.  FIG. 2  shows a first embodiment of the sensor device  10  according to the invention, while  FIGS. 3 and 4  show various embodiments according to the invention of the sensor plate  100 . 
         [0051]    The sensor plate  100  is generally of a plate-like construction and may be produced as a single layer or multiple layers joined to each other. A fixed coordinate system for the sensor plate  100 , with a longitudinal direction SX, a transverse direction SY and a direction perpendicular to the major surface SZ is shown for exemplary purposes in  FIG. 1 . In particular the SX direction and the SY direction may each be defined as local directions, each being derived as a tangent to a lower surface  100   b  of the sensor plate  100 . In this context, the SY direction may be defined such that each point thereof runs in the direction of a centre line M 100  of the sensor plate  100 , wherein the centre line M 100  is derived as the connecting line of all centre points of a connecting line between the shortest distances from edge points along edge lines extending opposite each other on the sensor plate  100 . In this respect, an edge line may be understood to be a line respectively connecting the two farthest points from one other on the sensor plate  100 . The coordinate system may also be defined on the basis of the SZ direction, each point of which is defined as the direction of the shortest line connecting each point on one surface  100   a ,  100   b  to a corresponding point on the respective surface arranged oppositely thereto, the origin of said coordinate system being established as a point on the lower surface  100   b . In this context, longitudinal direction SX may be fixed or it may be the centre line M 100 . 
         [0052]    In each of these embodiments, the sensor plate  100  may be designed as a flexible plate, that is to say a mat, and as such particularly as an elastic plate. Alternatively, the sensor plate  100  may also be of a rigid construction in each of said embodiments. The sensor plate  100  comprises a first or upper surface  100   a  and a second or lower surface  100   b . The sensor plate  100  also comprises at least one detection sublayer T. The at least one detection sublayer T may be integrated in sensor plate  100  as a film or foil. In such case, the detection sublayer T may be applied to a first surface  110   a  of a base plate of the sensor plate  100  as a film or foil and, for example, spread thereon or bonded thereto. In general, the sensor plate  100  may also have a multilayer construction, as is shown with layers  110 ,  120 ,  130  in  FIG. 1 . 
         [0053]    Like the sensor plate  100 , the base plate  20  generally has the form of a plate, and may be produced as a single layer or constructed from multiple layers joined to each other. A fixed coordinate system for the base plate  20 , with a longitudinal direction GX, a transverse direction GY and a direction perpendicular to the major surface GZ is shown for exemplary purposes in  FIG. 1 . In particular the GX direction and the GY direction may each be defined as local directions, each being derived as a tangent to lower surface  20   b  of the base plate  20 . In this context, the GY direction may be defined such that each point thereof runs in the direction of a centre line M 20  of the base plate  20 , wherein centre line M 20  is derived as the connecting line of all centre points of a connecting line between the shortest distances from edge points along edge lines extending opposite each other on the base plate  20 . In this respect, an edge line may be understood to be a line respectively connecting the two farthest points from one other on the base plate  20 . The coordinate system may also be defined on the basis of the GZ direction, each point of which is defined as the direction of the shortest line connecting each point on one surface  20   a ,  20   b  to a corresponding point on the respective surface arranged oppositely thereto, the origin of said coordinate system being established as a point on the lower surface  20   b . In this context, the longitudinal direction GX may be fixed or it may be the centre line M 20 . 
         [0054]    In each of these embodiments, the base plate  20  may be designed as a flexible plate, that is to say a mat, and as such particularly as an elastic plate. Alternatively, the base plate  20  may also be of a rigid construction in each of said embodiments. The base plate  20  comprises a first or upper surface  20   a  and a second or lower surface  20   b.    
         [0055]    According to the invention, the sensor plate  100  generally comprises: at least one locating recess  101  to accommodate a locating lug  102  when the sensor plate  100  and the base plate  20  are assembled to create a sensor device  10 .  FIG. 2  shows the assembled or operationally ready state of the sensor device  10  according to  FIG. 1 . Each locating recess  101  and the respectively associated locating lug  102  are designed in such manner that the locating recess  101  allows the respectively associated locating lug  102  a predefined minimum freedom of movement. In a plan view of the surface  100   a , a shape of the outer contours of the locating recess  101  and of the respectively associated locating lug  102  in the direction perpendicular to the major surfaces GZ and SZ is such that the locating lug  102  allows the respectively associated locating recess  101   a  local freedom of movement of the sensor plate  100  in all directions of the planar extension thereof, that is to say in longitudinal direction SX and transverse direction SY within the maximum range of movement allowable and as defined by the shape of the locating recess  101 . 
         [0056]    According to one embodiment of the sensor plate  100 , it is configured in such manner that the at least one locating recess  101  does not completely pass through a detection sublayer T of the sensor plate  100 , and is consequently suitable for an area  103  in which the at least one detection sublayer T does not extend. 
         [0057]    In the embodiment of sensor device  10  according to  FIGS. 1 and 2 , the base plate  20  is furnished with a total of six locating lugs  102   a ,  102   b ,  102   c ,  102   d ,  102   e ,  102   f ,  102   g , and  102   h , the lengthwise direction of which projects away from the base plate  20  in the direction perpendicular to the major surface GZ. Generally, the at least one locating lug  102  may be configured as a pin, that is to say a locating pin, as shown in  FIGS. 1 and 2 , and in particular may be cylindrical, with a circular cross section, when the cross section is obtained by viewing in the plane GX-GZ. Each locating lug  102  may also have an oval cross section, as is shown in  FIG. 6 . Alternatively, polygonal, for example rectangular, cross sections are possible for the locating lug  102 . In particular, it may be provided that the locating lug  102  has a cross section and size when viewed in the GX-GZ plane that is unchanged along the direction perpendicular to the major surface GZ. 
         [0058]    The locating lug  102  may also be produced integrally with base plate  20  ( FIG. 14 ). Alternatively, the locating lug  102  may be produced as a separate component from the base plate  20  (for example,  FIGS. 1 ,  5 ,  6 , and  7 ). In this case, a depression  103  or recess may be conformed in the base plate  20 , in which the respective leg may be inserted. Alternatively, the at least one locating lug  102  may also be placed on a surface  20   a  of the base plate  20  and fixed by bonding or welding, for example, as is also shown in  FIG. 14 . 
         [0059]    In the embodiment of the sensor plate  100  according to  FIGS. 1 and 2 , the sensor plate  100  is furnished with a total of six locating recesses  101   a ,  101   b ,  101   c ,  101   d ,  101   e ,  101   f ,  101   g , and  101   h  to accommodate each of the six locating lugs  102   a ,  102   b ,  102   c ,  102   d ,  102   e ,  102   f ,  102   g , and  102   h . Generally, the sensor plate  100  is furnished with at least one locating recess  101 . As described previously, the number, as well as, the shape and size of the locating recesses  101  and the respectively associated locating lugs  102  are constructed such that locating lug  102  has a freedom of movement in the respective locating recess  101 , which however is limited in the SX and SY directions and in the direction of rotation about the SZ axis. The free play may be provided such that in the SX and SY directions it amounts to from about 1% to about 10% or from about 1% to about 100% of the average thickness of sensor plate  100  in the SZ direction. The free play may also be greater or smaller than the range indicated. 
         [0060]    By this means, it is ensured that even significant temperature differences, e.g. in the range between 50K and 200K or even 300K or more, and the consequent changes in length of the sensor plate  100  will not cause local deformation thereof, and the sensor plate  100  will remain within specified limits and under no stress on the base plate  20 . The sensor function provided or supported by the sensor plate  100  is also not impaired thereby. 
         [0061]    The sensor plate  100  comprises at least one detection sublayer T and one connection device  17  for connecting the sensor plate  100  electrically to an evaluation device  80 , and an arrangement  150  of conductor tracks  15 , which connects the connection device  17  electrically to the detection sublayer T. In the embodiments shown in  FIGS. 1 ,  4 ,  5  and  6 , a total of six detection sublayers  111 ,  112 ,  113 ,  114 ,  115 ,  116  are integrated in the sensor plate  100 . 
         [0062]    According to the invention, the evaluation function of the evaluation device  80  may be provided in such manner that it has the range of movement of the sensor plate  100  on the base plate  20  stored in memory as predefined sensor plate position values or a range of sensor plate position values, so that the evaluation device  80  allocates a position of a detectable physical condition to a sensor signal that is generated by the detection sublayer T in response to said detectable physical condition within accuracy limits that are determined by the range of movement. Optionally, in this context, a temperature of the sensor plate  100  or the base plate  20 , captured by a temperature sensor for each (not shown) may also be taken into account. 
         [0063]    The evaluation device  80  may particularly consist of a base plate  81  and a housing  82  arranged thereon, in which a function module (not shown) with an evaluation function and a connector socket  83  for connecting a plugging device  17   a  of the connection device  17  is integrated. In general, the evaluation device  80  may also be configured as a conductor board, that is to say without a housing. 
         [0064]    To construct the deposition device  1  according to the invention, a sensor device  10  according to the invention is inserted or integrated in a containing device A. A die containing device A may be designed as a frame constructed with a rod assembly (not shown). Alternatively, the containing device A may also be constructed as a housing-like containing device  40  and in the form of a trough, for example, as is shown for example on the embodiment of the deposition device  1  according to  FIG. 1 . For the containing device  40  shown in  FIG. 1 , a coordinate system with a longitudinal direction BX, a transverse direction BY and a direction perpendicular to the major surface BZ is indicated. 
         [0065]    The containing device  40  illustrated in  FIG. 1  comprises a bottom plate  55  and a peripheral side wall  50  that surrounds the bottom plate  55  at a distance therefrom in the direction perpendicular to the major surface BZ. The bottom plate  55  and the peripheral side wall  50  thus enclose a containing space RS. The evaluation device  80  may be inserted in the containing space RS, wherein the evaluation device  80  may be positioned on the bottom plate  55 . 
         [0066]    A support plate  56  may be arranged around the entirety or sections of an inner surface of the side wall  50  facing toward the containing space RS, and on which the base plate  20  may be placed. In this way, a wall section  51  is created that extends between the bottom plate  55  and the support plate  56 . The base plate  20  and the side wall  50  as well as the support plate  56  may be designed such that the base plate  20  is held in a fixed position inside the containing device  40 . In particular, it may be provided that the base plate  20  may be pressed flat in the containing device  40 . In the embodiment of the containing device  40  shown in  FIG. 1 , the support plate  56  is positioned in such manner in the direction perpendicular to the major surface BZ that when viewed in said direction BZ a wall section  52  protrudes above the support plate  56 . 
         [0067]    In general, the deposition devicel may comprise a covering plate  90  or covering film  90  which—if such is intended in an embodiment—is laid on top of the sensor plate  100  for protection thereof or to create desired aesthetic, visual and/or tactile effects. 
         [0068]    The sensor plate  100  fulfils a planar sensor function, since the sensor plate  100  comprises at least one detection sublayer T. The respective sensor is realised because the sensor device  10  comprises a connection device  17  and conductor tracks  18 , connecting each of the at least one detection sublayers T electrically to the connection device  17 . In particular, each of the at least one detection sublayers T is designed such that a voltage is applied to the sensor plate  100 . In this case, two external voltage terminals of an external power supply device located outside the sensor device  10  may be connected to connection device  17  and thus to the detection sublayer T via the conductor tracks  18  in accordance with the respective embodiment thereof. 
         [0069]    The planar sensor function, which is performed by the respective detection sublayer T, may contain or provide one or more of the following sensor functions, or also other sensor functions: a pressure sensor function, a proximity sensor function, and an electromagnetic radiation sensing function. In particular, the sensor plate  100  is designed in such manner that it performs a planar sensor function, in which a physical set of conditions is captured on or at the first surface  100   a  —that is to say also “in a plane”—because a voltage change takes place through the sensor plate, which voltage change can be captured by the connection device  17 . An evaluation device  80  may also be connected to the connection device  17  via each of the at least one detection sublayers T, which is/are connected to the connection device  17  via two electrical wires. Said evaluation device  80  is designed to evaluate the sensor signals generated by the detection sublayer T in response to a physical condition that the layer is able to detect, in such manner that the device is able to assess the value of the detected physical situation, e.g., by determining whether a specified limit value therefor has been exceeded. 
         [0070]    For example, in order to perform the pressure sensor function, the detection sublayer T has the form of a pressure-sensitive film, by which a change in the voltage at the connection device  17  may be detected as a physical event when an object is placed on the first surface  100   a , and is transmitted to the evaluation device  80 . Then, the evaluation device  80  executes an evaluation function to determine that an object has been placed on the first surface  100   a . The detection sublayer T may be made from a piezoelectric material which responds to a local compression by causing a voltage change that can be interpreted by the evaluation device  80 . 
         [0071]    Alternatively, as is described in greater detail here with reference to  FIG. 3 , the detection sublayer T may be constructed from interlocking foil elements K 1 , K 2  to enable pressure sensitivity over an area. An electric wire L 1  and L 2  is connected to each of foil elements K 1 , K 2 . As shown in  FIG. 3 , foil elements K 1 , K 2  may also be configured in such manner that they overlap one another alternatingly in a serpentine manner to create areally optimised coverage for achieving planar pressure sensitivity. As is shown in  FIG. 3 , foil elements K 1 , K 2  may be crenellated, with foil teeth, which overlap and are interposed upon each other in the planar extension. Foil elements K 1 , K 2  are positioned with a relatively small distance therebetween, which distance is provided to ensure that no electrical current flows between the elements when an electric voltage is applied to wires L 1 , L 2 . 
         [0072]    In the embodiments shown in  FIGS. 1 ,  4 ,  5  and  6 , a total of six detection sublayers  111 ,  112 ,  113 ,  114 ,  115 ,  116  are integrated in the sensor plate  100 , which sublayers may be placed or integrated in a base plate  110 . At least a pair of foil elements K 1 , K 2  is integrated in each of the detection sublayers  111 ,  112 ,  113 ,  114 ,  115 ,  116 , thus creating an arrangement  150  of conductor tracks L 1 , L 2 , or  15 . The base plate  110  is particularly constructed as a circuit board. 
         [0073]    In the embodiments of foil crenellations K 1 , K 2  shown in  FIGS. 3 and 4 , a first foil crenellation K 1  is connected to a first electrical wire L 1 , and may then be connected via said wire L 1  and by means of the connection device  17  to a first external voltage terminal of the external power supply device. In addition, a second crenellation K 2  of the foil crenellations K 1 , K 2  is connected to a second electrical wire L 2 , and through this wire L 2  it may be connected to a second external voltage terminal of the external power supply device by means of the connection device  17 . Electrical wires L 1 , L 2  are electrically connected to the evaluation device  80 , which includes or is connected to the power supply device. 
         [0074]    In this embodiment, the sensor plate  100  consists of a base plate  110 , in which the at least one detection sublayer T is integrated, a separator device  120  and a conductor layer  130 . The conductor layer  130  is a layer or foil made from an electrically conductive material. The separator device  120  may be in the form of one layer or a plurality of separators. If the separator device  120  is in the form of a single layer, the separator device  120  may particularly be constructed as a flexible mesh, that is to say a mesh of a flexible and particularly an elastic material. The separator device  120  is generally designed in such manner that when an object of a predefined minimum size and a predefined minimum weight is placed on the surface  100   a , the foil elements K 1 , K 2  are connected to one another in an electrically conductive manner through the conductive layer  130 . In this way, when an object is laid on the sensor plate  100 , the evaluation device  80  is able to detect a voltage change and therewith also the physical set of conditions of this act of placing an object on the sensor plate  100 . 
         [0075]    In the embodiment of the sensor plate  100  according to  FIG. 3 , the connection device  17  is designed as a ribbon cable  107  with a plug device  17   a  attached to one end thereof. 
         [0076]    In contrast thereto, in the embodiment of the sensor plate  100  according to  FIG. 4 , the connection device  117  is designed with a plug device  17   a  that is physically integral with the base plate  110 . The plug device  17   a  is thus an integral part of the base plate  110  and may be affixed thereto for example by bonding or welding, or it may be manufactured as a single part therewith. 
         [0077]      FIG. 5  shows a further embodiment of a deposition device  40  according to the invention which does not include a protruding wall  52 , so that sensor device  10  is located on the deposition device  40  and protrudes therefrom in the BX direction. 
         [0078]      FIG. 6  shows a deposition device  1  and a sensor device  10  having only a single locating lug  102  and a single sensor plate with a single locating recess  103  for accommodating the locating lug  102 , wherein the locating lug  102  and the sensor plate with a single locating recess  103  have a cross sectional shape, in this case an oval cross sectional shape, which limits the freedom of movement of the sensor plate  100  on the base plate  20  in the GX and GY direction only. 
         [0079]      FIG. 7  is a perspective illustration of a further embodiment of a deposition device  40  according to the invention, comprising a different kind of sensor device than the deposition device illustrated in  FIG. 1 , wherein the sensor device has only one detection sublayer T or  111 , so that the sensor plate is provided with locating recesses  103  that are located outside of the detection sublayer T or  111  to accommodate locating lugs  102 . 
         [0080]      FIG. 8  shows a further embodiment of a deposition device  40  according to the invention, which differs from the deposition device of  FIG. 1  in that it has a continuous support plate  56 , thereby covering a containing space RS completely. For this purpose, a passthrough opening  60  has a first opening  61  in an area of a wall section  52  and a second opening  62  in the area of the wall section  52 , so that a connection device  17  in the form of a cable  107  can be routed through the openings  61 ,  62  to the evaluation device  80  in the containing space RS. 
         [0081]      FIG. 10  shows an embodiment of a sensor plate  100  of a sensor device  10  that is furnished with slots S extending between detection sublayers T. According to one embodiment of the sensor plate  100 , in this context it is provided that said slots extend from one lateral edge in the SX direction to beyond a centre line M 100 , and in particular over more than 75% of the width of the sensor plate  100  in a transverse direction SY. 
         [0082]    As shown in  FIG. 11 , it may further be provided that two slots S beginning from opposite positions on lateral edges of a sensor plate  100  extend between each of two detection sublayers T. In this case, the locating recesses  101  may be positioned between the two slots S. 
         [0083]    As shown in  FIG. 12 , a sensor plate  100  may comprise a support plate  105 , on which a base plate  110  is placed. The support plate  105  may be designed as a dimensionally stable or rigid plate. 
         [0084]    As shown in  FIG. 9  and the following figures, particularly  FIGS. 13   a ,  13   b  and  14 , locating lugs  102  do not have to pass all the way through locating recesses  101  in the SZ direction. Instead, it may also be provided that they only partly penetrate locating recesses  101 . Locating recesses  101  may also be depressions in a surface  100   b.    
         [0085]      FIG. 24  shows a further embodiment of a deposition device  40  in which the plug device of  FIG. 4  is plugged into a plug socket  137  that is integrated in a housing wall  50 , and in which a plug device  127  of an evaluation device  80  is also plugged into the plug socket  137 .