JP5631642B2 - Vehicle dimension measuring method and apparatus - Google Patents

Description

  The present invention relates to a vehicle dimension measuring method and apparatus for measuring the size (dimensions) of a vehicle body (railway vehicle) such as a train, a train, and a train, and a vehicle such as an automobile, and more particularly to the dimension of the vehicle or the like in a non-contact manner. The present invention relates to a vehicle dimension measuring method and apparatus for measuring the vehicle.

  A railway vehicle is composed of a carriage and a vehicle body mounted on the carriage. The external dimensions such as the width and height of the railway vehicle are different for each railway company. For this reason, every time a railway vehicle manufacturer manufactures a railway vehicle, it is measured and inspected for any part that exceeds the vehicle limit of each railway company before shipping. The vehicle limit is a dimensional limit range that limits the size of the train cross section of the train, which all railway vehicles must follow. In addition, it is clear that there are differences in the external dimensions of vehicles such as automobiles as well.

  As such a vehicle dimension measuring apparatus for measuring the outer dimension of a railway vehicle, a contact type is known. This is because a frame with a limit dimension of the vehicle is installed so as to cover the periphery of the railroad vehicle on the track, the railroad vehicle passes through it, and the frame is specified when the railroad vehicle comes into contact with the frame A possible signal is output. Therefore, when the railway vehicle comes into contact with the frame, the external dimensions of the portion are corrected, and the railway vehicle is again passed through the frame to check whether it is within the vehicle limit.

  In addition, by attaching a target as a measurement marker to a vehicle at a fixed position, photographing the target with a plurality of digital cameras, and performing various image processing and arithmetic processing on the photographed image data, the external dimensions of the vehicle Japanese Patent Application Laid-Open No. 2004-228688 describes a finished dimension inspection system for a railway vehicle that calculates an outline of the above.

JP 2008-8651 A

  Conventionally, the contact type vehicle dimension measurement method using a formwork has a long railway vehicle, so that it is difficult to find the troubled part and it is difficult to accurately measure the troubled amount. In addition, since the vehicle limit varies depending on the railway company, it is necessary to prepare molds with various dimensions. Furthermore, every time the vehicle changes, the form must be replaced, and the replacement of the form is a dangerous work at a high place, and there is a problem that it takes a lot of time.

  On the other hand, it is possible to solve the above-mentioned problem of the contact method by measuring the approximate dimensions of the vehicle by the non-contact method described in Patent Document 1. However, in the non-contact method of Patent Document 1, a target must be provided at an appropriate position of the vehicle, and the measurable dimensions are only the location where the target is provided. Therefore, in the contact type vehicle dimension measurement method using the mold, it was possible to measure and inspect an unexpected dimensional error. However, in the case of the non-contact method of Patent Document 1, an unexpected other than the target is unexpected. Dimensional errors may be missed. Moreover, since the non-contact method of patent document 1 uses a magnet, a suction cup, a transparent plastic plate, etc. for the attachment of a target, the effort and time which are unnecessary for the attachment operation are required. Furthermore, the non-contact method described in Patent Document 1 requires an expensive and complicated image processing program.

  The present invention has been made in view of the above points, and can measure the dimensions of a vehicle or the like with high accuracy in a non-contact manner by a low-priced and simple processing program without providing a target or the like on the vehicle or the like. It is an object of the present invention to provide a vehicle dimension measuring method and apparatus that can be used.

  A first feature of the vehicle dimension measuring method according to the present invention is that a laser beam is linearly applied to at least a part of an outer peripheral surface of a relatively moving vehicle, and light cutting is performed on the outer peripheral surface of the vehicle by irradiation. A line is detected, and the outer dimensions of the vehicle are measured based on the detected light cutting line. This is because when the laser beam is irradiated linearly on the outer peripheral surface of the vehicle, the irradiated spot is recognized as linear light. Therefore, the external dimension of the vehicle is detected by detecting this linear light as a light cutting line. Is to be measured. Therefore, it is not necessary to attach a target as in the prior art, and it is only necessary to detect a linear light cutting line. Therefore, the external dimensions of the vehicle can be measured by a low-cost and simple processing program. Here, “relatively moving” means that the case where the vehicle moves, the case where the laser beam irradiation means moves, and the case where both move are included.

  A second feature of the vehicle dimension measuring method according to the present invention is to irradiate a plurality of laser beams in an unbroken line shape on the outer peripheral surface including the left and right side surfaces and the upper surface of a relatively moving vehicle. It is to detect the light cutting line formed on the outer peripheral surface of the vehicle without interruption, and to measure the outer dimension of the vehicle based on the detected light cutting line. This is intended to irradiate laser light over the entire outer peripheral surface including the left and right side surfaces and the upper surface of the vehicle. Since it is very difficult to irradiate the entire outer peripheral surface with a single laser beam generator, the present invention irradiates a plurality of laser beams in an unbroken line, The optical cutting line formed in the vehicle is detected to measure the external dimensions of the vehicle.

  A third feature of the vehicle dimension measuring method according to the present invention is the vehicle dimension measuring method according to the first or second feature, in which, when the vehicle is a railway vehicle, from outside the vehicle limit of the railway vehicle. The laser light is irradiated linearly on the outer peripheral surface of the railway vehicle, and it is determined whether or not the measured outer dimensions of the railway vehicle are within the vehicle limit. In this case, when the vehicle is a long railway vehicle, it is determined whether or not the outer dimension of the railway vehicle is within the vehicle limit.

  A fourth feature of the vehicle dimension measuring method according to the present invention is that, in the vehicle dimension measuring method according to the third feature, an excess portion of the vehicle limit is displayed so as to be visible. This is to show which part of the cross-sectional view of the railway vehicle is exceeded, or the railway vehicle is displayed in three dimensions, and which part of the railway vehicle is exceeded is visible. It is a thing.

  According to a first aspect of the vehicle dimension measuring device of the present invention, laser generating means for linearly irradiating laser light to at least a part of the outer peripheral surface of a relatively moving vehicle, and irradiation from the laser generating means. Detection means for detecting a light cutting line formed on the outer peripheral surface of the vehicle by the laser light, and control means for measuring an outer dimension of the vehicle based on the light cutting line detected by the detection means. There is. This is an invention of a vehicle dimension measuring device corresponding to the first feature of the vehicle dimension measuring method.

  The second feature of the vehicle dimension measuring apparatus according to the present invention is that the outer peripheral surface including the left and right side surfaces and the upper surface of the relatively moving vehicle is irradiated with laser light, and the adjacent laser beams are linearly continuous. A plurality of laser generating means arranged along the outer peripheral surface as described above, and a detecting means for continuously detecting a light cutting line formed on the outer peripheral surface of the vehicle by the laser light emitted from the laser generating means, And a control means for measuring an outer dimension of the vehicle based on the light cutting line detected by the detection means. This is an invention of a vehicle dimension measuring device corresponding to the second feature of the vehicle dimension measuring method.

  A third feature of the vehicle dimension measuring apparatus according to the present invention is the vehicle dimension measuring apparatus according to the first or second feature, wherein, when the vehicle is a railway vehicle, the laser generating means is the railway vehicle. The outer surface of the railway vehicle is irradiated linearly with the laser beam, and the control means determines whether or not the measured outer dimensions of the railway vehicle are within the vehicle limit. It is to perform the determination. This is an invention of a vehicle dimension measuring device corresponding to the third feature of the vehicle dimension measuring method.

  According to a fourth aspect of the vehicle dimension measuring apparatus according to the present invention, in the vehicle dimension measuring apparatus according to the third aspect, the control means includes a display means for displaying the location exceeding the vehicle limit so as to be visible. It is in. This is an invention of a vehicle dimension measuring device corresponding to the fourth feature of the vehicle dimension measuring method.

  According to the present invention, there is an effect that the dimensions of a vehicle or the like can be measured with high accuracy in a non-contact manner by a low-priced and simple processing program without providing a target or the like on the vehicle or the like.

It is a figure showing the schematic structure of the vehicle size measuring device concerning the present invention. It is the figure which looked at the vehicle dimension measuring apparatus of FIG. 1 from the advancing direction side (left side of a figure) of a railway vehicle. It is a figure which shows an example of a structure of the detector of FIG.1 and FIG.2. It is a figure which shows an example of the detection screen of the optical cutting line image | photographed with the detector of FIG. It is a figure which shows an example of the detection result of a vehicle dimension measuring apparatus, Comprising: It is sectional drawing of the railway vehicle which showed clearly the location where a part of railway vehicle exceeded the vehicle limit. It is a figure which shows the excess part intelligibly by synthesize | combining and displaying each sectional drawing which shows the detection result of FIG. 5 continuously and three-dimensionally along the longitudinal direction of a vehicle. It is a flowchart figure which shows an example of the process of the vehicle dimension measuring apparatus which concerns on this invention.

  Hereinafter, an embodiment of a vehicle dimension measuring device according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a diagram showing a schematic configuration of a vehicle dimension measuring apparatus according to the present invention. FIG. 2 is a view of the vehicle dimension measuring apparatus of FIG. 1 as viewed from the traveling direction side (left side of the figure) of the railway vehicle. 1 and 2 show a state in which the external dimensions of the railway vehicle are actually measured. The vehicle dimension measuring device measures the outer dimension of the completed railway vehicle 10. Usually, about 20 railway vehicles 10 are measured, but only one railway vehicle is shown in the figure.

  The vehicle dimension measuring device includes detectors 51 to 67, a laser distance meter 11, and a control device 12. This vehicle dimension measuring device photographs the railway vehicle 10 using the detectors 51 to 67 provided along the outer periphery of the railway vehicle 10 by using a light cutting method, and the control device 12 captures the photographed railway vehicle 10. The external dimensions are calculated based on the image, and if the railway vehicle 10 does not exceed the vehicle limit dimension, and if the vehicle limit dimension is exceeded, the location is instantaneously displayed.

  The detectors 51 to 67 constitute a detection gate so as to cover the railway vehicle 10 along the outer periphery of the railway vehicle 10. As shown in FIG. 1, the railcar 10 slowly moves on the rail 13 from the right side to the left side in FIG. By this movement, the railway vehicle 10 passes along the rail 13 through the detection gate composed of the detectors 51 to 67. The detectors 51 to 67 photograph a light cutting line irradiated on the outside of the railway vehicle 10 passing through the detection gate.

  FIG. 3 is a diagram illustrating an example of the configuration of the detector of FIGS. 1 and 2. FIG. 3 is a top view of the detector 54 of FIG. 2 as viewed from the detector 55 side. The detector 54 includes a laser beam generator 541 and a camera device 542 that captures images of the railway vehicle 10. The laser beam generator 541 irradiates the railcar 10 with a long and narrow optical cutting line 544 while using an polygonal mirror or the like to amplitude-shift the projection axis of the laser beam 543 in the vertical direction perpendicular to the longitudinal direction of the rail. To do. The camera device 542 is disposed at an angular position of about 30 degrees with respect to the light projection axis of the laser beam 543, and captures linear light, that is, a light cutting line 544, which is generated when the laser beam 543 irradiates the vehicle body of the railway vehicle 10. To do. Note that the camera device 542 digitally processes the captured image (light cutting line 544) and outputs the processed image. Although not shown, the camera device 542 is provided with a filter such as a polarizing plate so that only the light cutting line 544 is effective because light such as sunlight or illumination enters in addition to the reflected light of the laser beam. It is configured to shoot. In FIG. 3, the railway vehicle 10 moves upward from the bottom of the figure. The line width of the light cutting line irradiated by the laser light is about 3 to 5 [mm].

  FIG. 4 is a diagram illustrating an example of a detection screen for a light section line photographed by the detector of FIG. The detection screen 545 is taken by the camera device 542 of the detector 54. On the detection screen 545, the left side of the figure shows the side closer to the detector 54 (near side), and the right side of the figure shows the side far from the detector 54 (far side). Here, near means a case where the distance between the detector 54 and the vehicle body of the railway vehicle 10 is small, and far away means a case where the distance between the detector 54 and the vehicle body of the railway vehicle 10 is large. The light cutting lines 546 to 548 shown on the detection screen 545 indicate different railway vehicles. As is clear from this, the light cutting line 546 means being located far away, the light cutting line 548 means being closer than the light cutting line 546, and the light cutting line 547 is It means that it exists in the middle of both optical cutting lines. By measuring the positions of these light cutting lines 546 to 548 on the detection screen 545, the distance from the detectors 51 to 67 to the vehicle body, that is, the vehicle body outline of the railway vehicle 10 can be measured.

  As is apparent from the figure, the light section line moves in the left-right direction within the detection screen 545 in accordance with the size of the vehicle body outline of the railway vehicle 10. In the detection screen 545, an alternate long and short dash line 549 indicates the vehicle limit 15 around the railway vehicle 10. Therefore, since the light cutting lines 546 and 547 exist on the far side from the one-dot chain line 549, it can be recognized that the railway vehicle is within the vehicle limit. On the other hand, a part of the light cutting line 548 (near the center in the height direction) exists closer to the dashed line 549. In this case, a part of the railway vehicle exceeds the vehicle limit. Means that Since the portion exceeding the vehicle limit is the light cutting line 548 located on the near side from the alternate long and short dash line 549, the portion can be easily specified by image processing. In the detection screen 545, the upper side of the figure indicates a high position in the vehicle height direction, and the lower side of the figure indicates a low position in the vehicle height direction. Height direction distance including a distance value that is a distance from the detectors 51 to 67 and a height offset value from the rail surface of each camera device for each pixel of the detection screen in the detectors 51 to 67. The height value from the detectors 51 to 67 and the height from the rail surface can be obtained by converting the distance of the detected pixel.

  The camera devices 512 to 672 of the detectors 51 to 67 constituting the vehicle position measuring device of FIGS. 1 and 2 detect all adjacent light cutting lines 514 to 674 irradiated to the vehicle body of the moving railway vehicle 10. The containers are arranged so as to overlap each other. The vehicle position information, which is the position in the longitudinal direction of the railway vehicle 10, is acquired by a vehicle position measuring device including the laser rangefinder 11. In this embodiment, the distance traveled by the railway vehicle 10 is calculated using a laser distance meter 11 as a vehicle position measuring device. Note that other measurement methods may be used. For example, if the railway vehicle 10 is moved at a constant speed, the approximate vehicle position can be measured based on the sampling period of the camera devices 512 to 672 of the detectors 51 to 67 without using the laser distance meter 11. it can.

  The overall operation of the vehicle position measuring device is controlled by the control device 12. The control device 12 performs predetermined image processing on the detection screen imaged by each of the detectors 51 to 67, and saves it in the image memory 121 together with the vehicle position data from the laser rangefinder 11 to form a file. The control device 12 measures the external dimensions of the vehicle by performing predetermined image processing based on the information of the image data of the detection screen imaged by the detectors 51 to 67 and the vehicle position data from the laser distance meter 11. .

  In this embodiment, the vehicle limit indicating the limit of the vehicle dimensions of the railway vehicle 10 is a dimensional limit range that limits the size of the train cross section of the train that all the railway vehicles must follow. . When measuring the outer dimensions of the railway vehicle 10 using the detectors 51 to 67, and in order to detect the location when the outer dimension exceeds the vehicle limit at an early stage, as shown in FIG. ˜67 must be arranged so as to cover the railcar 10 along the outer periphery of the railcar 10 on the track. The number of detectors 51 to 67 shown in the figure is an example, and may actually be more or less. In addition, the imaging ranges of the detectors 51 to 67 must overlap with adjacent detectors so that no undetected portions exist. The detectors 51 to 67 are arranged on a frame (not shown) along the outer periphery of the railway vehicle 10 by a fixing device (not shown). At this time, each of the detectors 51 to 67 is preferably fixed by a flexible semi-fixing tool whose arrangement and direction can be freely changed.

  FIG. 5 is a diagram illustrating an example of a detection result of the vehicle dimension measuring device, and is a cross-sectional view of the railway vehicle that clearly shows a portion where a part of the railway vehicle has exceeded the vehicle limit. FIG. 6 is a diagram showing the excess points in an easy-to-understand manner by combining and displaying the cross-sectional views showing the detection results of FIG. 5 continuously and three-dimensionally along the longitudinal direction of the vehicle. The control device 12 displays images as shown in FIGS. 5 and 6 on the display unit of the control device 12. When the measurement of the outer dimensions of the railway vehicle 10 (here, one vehicle) is completed using the vehicle dimension measuring device, the vehicle limit 15 is determined in the outer dimensions of the railway vehicle 10 detected by the detectors 51 to 67. As shown in the cross-sectional view of FIG. 5, there are four places (151, 153, 155, 157).

  On the other hand, when the location exceeding the vehicle limit detected by each of the detectors 51 to 67 is confirmed by a perspective view as shown in FIG. 6, the excess location is 7 locations (151, 152, 153, 154, 155, 156, 157) are displayed as they exist. 5 and 6, the excess portion 151 is highlighted by the excess portion marker 70 so that the excess portion 151 can be specified with respect to the dimension of the vehicle limit 15. In addition, when an excess point is found during measurement, a sound for caution such as “detection of an excess point with the # detector” may be generated by a sound generator or the like. Further, even when displaying on the screen, even if the control device 12 is measuring, the excess portion may be displayed instantaneously. As a result, the measurer can easily recognize which position has exceeded the vehicle limit 15.

  As shown in FIG. 6, an overall view for one vehicle can be created by synthesizing all the sectional views based on the sectional view of FIG. 5 and the vehicle position information. In FIG. 6, the interval between the cross-sectional views is slightly rough for convenience of explanation, but a highly accurate three-dimensional image can be created by increasing the accuracy of the vehicle position information. In FIGS. 5 and 6, only the excess portion with respect to the vehicle limit 15 is illustrated, but a three-dimensional image for one vehicle is created by combining them based on the light cutting line and the vehicle position information. It is also possible to do. As shown in FIG. 5 and FIG. 6, only the excess location with respect to the vehicle limit is shown, that is, the excess location corresponding to the entire vehicle is displayed by simple calculation processing by displaying the excess location using the excess location marker 70. be able to. The results measured by the vehicle dimension measuring device are preferably stored as one file for each rail vehicle 10.

FIG. 7 is a flowchart showing an example of processing of the vehicle dimension measuring apparatus according to the present invention. In the first step S40, the railway vehicle 10 slowly passes through the detectors 51 to 67. Accordingly, based on the images taken by the camera devices 512 to 672 of the detectors 51 to 67, the light cutting method is used. The control device 12 executes the process of extracting the light section line.
In step S <b> 41, the control device 12 stores light section line image data indicating the light section lines 514 to 674 photographed by the camera devices 512 to 672 in the image memory 121 together with vehicle position information.

  In step S42, the control device 12 calculates the external dimensions of the vehicle, that is, the two-dimensional dimensions from the center of the track of the vehicle, based on the separation / height conversion table, from the optical section line image data stored in the image memory 121. To do. In the separation / height conversion table, the outer dimensions of the vehicle are defined as conversion tables for all the pixels of the optical section line image data, so that the control device 12 was photographed by each camera device 512-672. The light section line image data can be easily converted into the vehicle outer dimensions.

In step S43, the control device 12 adds a height offset corresponding to the mounting position of each detector 51 to 67 (equivalent to the height from the rail 13 surface serving as the reference height) to the vehicle outer dimensions calculated in the previous step. Add the amount.
In step S44, the control device 12 creates the height-offset vehicle outer dimension value calculated in the previous step as a measurement value file with a resolution of 1 [mm].

In step S <b> 45, the control device 12 creates an excess data file indicating the location where the light cutting line has exceeded the vehicle limit 15 based on the measurement file of the outer dimensions corresponding to the detectors 51 to 67. As shown in FIG. 4, it means that the light cutting line 548 existing closer to the vehicle side than the one-dot chain line 549 indicating the vehicle limit exceeds the vehicle limit.
In step S46, the control apparatus 12 synthesize | combines the optical cutting lines 514-674 contained in the measurement value file of each detector 51-67 produced by step S44, respectively, and produces sectional drawing of a vehicle external dimension.

  In step S47, the control device 12 creates an external view of the entire vehicle by arranging the sectional views of the vehicle outer dimensions created in step S46 in the longitudinal direction based on the vehicle position information. In addition, you may display on a display apparatus suitably the cross-sectional view and vehicle whole view (stereoscopic image) which were each produced by step S46, 47 according to the request | requirement from a measurer. As shown in FIGS. 5 and 6, only the excess points with respect to the vehicle limit 15 may be displayed.

  The present invention allows a railway vehicle to pass through a light-cutting detector that sets the cross-sectional shape of the railway vehicle by irradiating the railway vehicle with a linear laser beam and observing the shape of the reflected light. Then, the dimensions of the cross section of the railway vehicle are calculated, and the dimensions of the entire railway vehicle are measured by calculating the longitudinal dimension of the vehicle from the travel distance of the railway vehicle. Moreover, by comparing with the medium in which the critical dimension of the railway vehicle is stored, the location exceeding the vehicle limit can be displayed on the display device and the inspection result can be visually confirmed. According to the vehicle dimension measuring device of the present invention, the amount of trouble can be measured for distance measurement, not the detection of the presence or absence of trouble, and the rework amount can be immediately determined. Further, by synchronizing the moving amount of the railway vehicle and the photographing timing, there is an effect that the position of the troubled portion in the longitudinal direction of the railway vehicle can be automatically recorded.

  In the above-described embodiment, the description has been given by taking an example of a vehicle body (railway vehicle) such as a train, a train, or a train. Is possible. When vehicles such as automobiles enter tunnels, under bridges, underpasses, etc., measure the dimensions before passing through restricted areas such as height and width, determine whether the restricted dimensions are violated, and invade. If the vehicle is present, it may be applied as an accident prevention device that issues a sign such as sound or light to the driver to call attention. In the above-described embodiment, the laser beam has been described as an example. However, the wavelength of the laser beam may be appropriately combined with visible light, ultraviolet light, and infrared light depending on the application.

10 ... Railcar,
11 ... Laser distance meter,
12 ... Control device,
121: Image memory,
13 ... Rail,
15 ... Vehicle limit,
151-157 ... excess points,
51-67 ... detector 541 ... laser light generator,
542 ... Camera device,
543 ... laser light,
544, 546-548 ... optical cutting line,
545 ... Detection screen,
70 ... excess location marker

Claims (8)

A plurality of laser generating unit provided in the outside of the vehicle limits the moving railway vehicle on an outer peripheral surface including a right side surface and the top surface of the railway vehicle by irradiating a record laser light so that the unbroken linear,
A light cutting line formed on the outer peripheral surface of the vehicle by irradiation is detected without interruption by a plurality of detection means ,
A plurality of light cutting line image data indicating the light cutting lines detected by the plurality of detection means are stored in an image memory together with position information of the railcar,
Converting each of the plurality of light section line image data into a two-dimensional dimension from the center of the track of the railway vehicle based on a distance / height conversion table;
A height offset amount corresponding to each mounting position of the plurality of detection means is added to each converted two-dimensional dimension,
A vehicle dimension measuring method, comprising combining the two-dimensional dimensions to which the offset amount is added and measuring the outer dimensions of the railway vehicle. 2. The vehicle dimension measuring method according to claim 1, wherein a cross-sectional view of the outer dimensions of the railway vehicle is arranged in a longitudinal direction based on the railway vehicle position information to create an exterior view of the entire railway vehicle. Dimension measurement method. The vehicle dimensions measuring method according to claim 1 or 2, vehicle dimensions measuring method characterized in that external dimensions of the front Symbol railcar is determined whether or not there in the vehicle gauge.   4. The vehicle dimension measuring method according to claim 3, wherein an excess portion of the vehicle limit is displayed so as to be visible. Laser light is applied to the outer peripheral surface including the left and right side surfaces and the upper surface of the moving railway vehicle, and along the outer peripheral surface outside the vehicle limit of the railway vehicle so that adjacent laser beams are linearly continuous. A plurality of laser generating means arranged;
A plurality of detecting means for continuously detecting a light cutting line formed on the outer peripheral surface of the vehicle by the laser light emitted from the laser generating means;
A plurality of light cutting line image data indicating the light cutting lines detected by the plurality of detection means are stored in an image memory together with position information of the railcar,
Converting each of the plurality of light section line image data into a two-dimensional dimension from the center of the track of the railway vehicle based on a distance / height conversion table;
A height offset amount corresponding to each mounting position of the plurality of detection means is added to each converted two-dimensional dimension,
A vehicle dimension measuring apparatus comprising: control means for measuring the outer dimensions of the railway vehicle by respectively combining the two-dimensional dimensions to which the offset amount is added . 6. The vehicle dimension measuring apparatus according to claim 5, wherein the control means creates an external view of the entire railway vehicle by arranging cross-sectional views of the external dimensions of the rail vehicle in a longitudinal direction based on the rail vehicle position information. A vehicle dimension measuring device. The vehicle dimensions measuring device according to claim 5 or 6, prior Symbol control means, vehicle dimensions outer dimensions of said measured railway vehicle is characterized in that it is determined whether or not there in the vehicle gauge measuring device.   8. The vehicle dimension measuring apparatus according to claim 7, wherein the control means includes a display means for displaying a location where the vehicle limit is exceeded so as to be visible.

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