Patent Application
20200047779
This application is a U.S. nonprovisional application which claims priority to Japanese Patent Application No. 2018-148864, filed on Aug. 7, 2018. This application is also related to Japanese Patent Application No. 2012-007950, published on Jan. 12, 2012 and Japanese Patent Application No. 2007-223473, published on Sep. 6, 2007. The contents of each of the aforementioned patent applications are hereby incorporated by reference in their entirety.
Present invention relates to a vehicle size measurement apparatus and a vehicle size measuring method, which measure outside sizes of a vehicle of a railroad. In addition, heights of the bottom of various kinds of apparatus prepared under a floor of the vehicle (henceforth “the apparatus under the vehicle floor”) are also included in the outside sizes of the vehicle.
A duty of periodical inspections and maintenances is imposed upon the vehicle of the railroad. For example, in an inspection before everyday operation, inspection workers inspect pre-determined items on the vehicle, which has stopped on rails, by hand. About outside sizes of the vehicle, vehicle limits are defined. A patent reference 1 shows the conventional technology which measures the outside sizes of the vehicle in high precision. On the other hand, a patent reference 2 shows the inspection method and apparatus which obtain a long image of the moving vehicle and inspect the vehicle by combining other kinds of the information from sensors in relation to the image.
In the vehicle under run, deviations of positions and heights of outside surfaces of the vehicle occur due to gaps in upper/lower and left-side/right-side directions or an inclination, which are caused by a swing of the vehicle. The technology shown in the patent reference 1 gives no consideration to the deviations of the outside surfaces of the vehicle due to the swing of the vehicle. Especially, in the bottom of the floor of the vehicle of the railroad, various kinds of the apparatus under the vehicle floor, such as compressors and air tanks, etc. are installed. However, as for the apparatus under the vehicle floor, fixation may loosen owing to the vibration while running, etc., a height of the apparatus under the vehicle floor may become lower than a regulation value, and when the worst, the apparatus under the vehicle floor itself or its cover may drop out. Then, conventionally, the inspection workers were periodically inspecting and measuring the height of the apparatus under the vehicle floor by hand. Therefore, inspection works took time and efforts, and there was a problem of measurement accuracy variations in each inspection worker. On the other hand, in the technology shown in the patent reference 2, although the apparatus temperature, unusual sounds, vibrations, electric field intensity, or magnetic field intensity were measured using the sensors, no consideration is given to the height of the apparatus under the vehicle floor.
An object of the present invention is to measure the outside size of the vehicle accurately while running the vehicle.
The feature of a vehicle size measurement apparatus according to the present invention is to comprise a plurality of the 1st sensors which irradiate inspection lights to a plurality of places of a vehicle of a railroad and output measurement signals which show positions and distances by receiving lights from a plurality of the places of the vehicle, the 2nd sensor which irradiates an inspection light to an outside surface of the vehicle and outputs a measurement signal which shows a positions and a distance by receiving a light from the outside surface of the vehicle, and control and processing equipment which controls a plurality of the 1st sensors and the 2nd sensor, processes the measurement signal outputted from the 2nd sensor, and detects an outside size of the vehicle, wherein the control and processing equipment processes the measurement signals outputted from a plurality of the 1st sensors, detects positions and heights of a plurality of the places of the vehicle, calculates amounts of a deviation of the outside surface of the vehicle due to a swing of the vehicle based on amounts of fluctuations of the detected positions and heights of a plurality of the places of the vehicle, and corrects the detected outside size of the vehicle according to the calculated amounts of the deviation.
The feature of a vehicle size measuring method according to the present invention is to comprise the following steps of: using a plurality of the 1st sensors, irradiating inspection lights to a plurality of places of a vehicle of a railroad and outputting measurement signals which show positions and distances by receiving lights from a plurality of the places of the vehicle, using the 2nd sensor, irradiating an inspection light to an outside surface of the vehicle and outputting a measurement signal which shows a positions and a distance by receiving a light from the outside surface of the vehicle, processing the measurement signals outputted from a plurality of the 1st sensors and detecting positions and heights of a plurality of the places of the vehicle, processing the measurement signal outputted from the 2nd sensor and detecting an outside size of the vehicle, calculating amounts of a deviation of the outside surface of the vehicle due to a swing of the vehicle based on amounts of fluctuations of the detected positions and heights of a plurality of the places of the vehicle, and correcting the detected outside size of the vehicle according to the calculated amounts of the deviation.
In the vehicle under run, the deviations of positions and heights of the outside surfaces of the vehicle occur due to gaps in upper/lower and left-side/right-side directions or an inclination, which are caused by the swing of the vehicle. Amounts of the deviations of the outside surfaces of the vehicle due to the swing of the vehicle vary depending on swinging levels of the vehicle and the positions of the outside surfaces of the vehicle in a rails width direction and their heights. By calculating the amounts of the deviation of the outside surface of the vehicle due to the swing of the vehicle based on the amounts of the fluctuations of the detected positions and heights of a plurality of the places of the vehicle, and by correcting the detected outside size of the vehicle according to the calculated amounts of the deviation, the outside size of the vehicle can be measured accurately without any influence of the swing of the vehicle under run.
The further feature of the vehicle size measurement apparatus according to the present invention is to comprise body number detection equipment which detects the information peculiar to each vehicle and given to the vehicle (the information for specifying each vehicle, such as vehicle numbers or the train organization information, etc., henceforth “the body number information”), wherein the control and processing equipment processes the data of the outside size of the vehicle with relating to the body number information detected by the body number detection equipment. The further feature of the vehicle size measuring method according to the present invention is to comprise the following steps of: using body number detection equipment, detecting the body number information given to the vehicle, and processing the data of the outside size of the vehicle with relating to the body number information detected by the body number detection equipment. By checking the body number information, a measurement result can be distinguished from results of other vehicles.
The further feature of the vehicle size measurement apparatus according to the present invention is to comprise a vehicle position sensor which detects a position of the vehicle and outputs detection signals at every time when the vehicle moves a predetermined distance, wherein the control and processing equipment carries out a synchronous control of a plurality of the 1st sensors and the 2nd sensor based on the detection signals outputted from the vehicle position sensor. The further feature of the vehicle size measuring method according to the present invention is to comprise the following steps of: using a vehicle position sensor, detecting a position of the vehicle and outputting detection signals at every time when the vehicle moves a predetermined distance, and carrying out a synchronous control of a plurality of the 1st sensors and the 2nd sensor based on the detection signals outputted from the vehicle position sensor. The amounts of the deviation of the outside surface of the vehicle due to the swing of the vehicle are changing time after time depending on a travelling movement of the vehicle. By using the vehicle position sensor, detecting the position of the vehicle, outputting the detection signals at every time when the vehicle moves the predetermined distance, and carrying out the synchronous control of a plurality of the 1st sensors and the 2nd sensor based on the detection signals outputted from the vehicle position sensor, the amounts of the deviation of the outside surface of the vehicle due to the swing of the vehicle can be measured accurately.
The further feature of the vehicle size measurement apparatus according to the present invention is that the 2nd sensor irradiates the inspection light below to a floor of the vehicle and outputs the measurement signal which shows the position and the distance by receiving the light below from the floor of the vehicle, and the control and processing equipment processes the measurement signal outputted from the 2nd sensor and detects a height of the bottom of an apparatus under the vehicle floor, which is prepared under the floor of the vehicle. The further feature of the vehicle size measuring method according to the present invention is to comprise the following steps of: using the 2nd sensor, irradiating the inspection light below to a floor of the vehicle and outputting the measurement signal which shows the position and the distance by receiving the light below from the floor of the vehicle, processing the measurement signal outputted from the 2nd sensor, and detecting a height of the bottom of an apparatus under the vehicle floor, which is prepared under the floor of the vehicle. The height of the bottom of the apparatus under the vehicle floor can be measured accurately while running the vehicle.
The further feature of the vehicle size measurement apparatus according to the present invention is that the control and processing equipment processes the measurement signal outputted from the 2nd sensor, detects the heights of the bottom of the apparatus under the vehicle floor at the same interval, creates an image which shows the distribution of the heights of the bottom of the apparatus under the vehicle floor, and specifies measurement points, which are pointed out beforehand, on the created image. The further feature of the vehicle size measuring method according to the present invention is to comprise the following steps of: processing the measurement signal outputted from the 2nd sensor, detecting the heights of the bottom of the apparatus under the vehicle floor at the same interval, creating an image which shows the distribution of the heights of the bottom of the apparatus under the vehicle floor, and specifying measurement points, which are pointed out beforehand, on the created image. By creating the image which shows the distribution of the heights of the bottom of the apparatus under the vehicle floor, and specifying the measurement points, which are pointed out beforehand, on the created image, the inspection worker can arbitrarily point out the measurement points beforehand.
The further feature of the vehicle size measurement apparatus according to the present invention is that the control and processing equipment creates the image which shows the distribution of the heights of the bottom of the apparatus under the vehicle floor after correcting the detected data of the heights of the bottom of the apparatus under the vehicle floor at the same interval according to the amount of the deviation of the bottom of the apparatus under the vehicle floor due to the swing of the vehicle. The further feature of the vehicle size measuring method according to the present invention is to comprise the following steps of: creating the image which shows the distribution of the heights of the bottom of the apparatus under the vehicle floor after correcting the detected data of the heights of the bottom of the apparatus under the vehicle floor at the same interval according to the amount of the deviation of the bottom of the apparatus under the vehicle floor due to the swing of the vehicle. The image can be obtained accurately without any influence of the swing of the vehicle. Therefore, it is possible to detect differences by comparing the image with another image which was created about the same vehicle before.
The further feature of the vehicle size measurement apparatus according to the present invention is to comprise a memory which memorizes the data of the height of the bottom of the apparatus under the vehicle floor, wherein the control and processing equipment judges whether the measured height of the bottom of the apparatus under the vehicle floor is less than a predetermined value from a datum point which was beforehand set on the vehicle, and memorizes a judgment result in the memory. The further feature of the vehicle size measuring method according to the present invention is to comprise the following steps of: preparing a memory which memorizes the data of the height of the bottom of the apparatus under the vehicle floor, judging whether the measured height of the bottom of the apparatus under the vehicle floor is less than a predetermined value from a datum point which was beforehand set on the vehicle, and memorizing a judgment result in the memory. In the vehicle under run, since the deviations of the heights of the bottom of the apparatus under the vehicle floor occur due to the swing of the vehicle, a conventional way of judging good/bad of the measurement result based on a height of an upper surface of the rail is not suitable. Therefore, the measurement result is judged good or bad based on a distance from the datum point which was beforehand set on the vehicle. The datum point is, for example, a middle point of a left-side edge and a right-side edge in a front/rear view of the vehicle. The good/bad judgement of the measurement result can be checked with the data memorized in the memory.
The further feature of the vehicle size measurement apparatus according to the present invention is to comprise a display which displays the height of the bottom of the apparatus under the vehicle floor, wherein the control and processing equipment displays the judgment result on the display. The further feature of the vehicle size measuring method according to the present invention is to comprise the following steps of: preparing a display which displays the height of the bottom of the apparatus under the vehicle floor, and displaying the judgment result on the display. The inspection worker can easily know the good/bad judgement of the measurement result by checking displayed contents.
According to the present invention, it is possible to measure the outside size of the vehicle accurately while running the vehicle.
Furthermore, by using the body number detection equipment, detecting the body number information given to the vehicle, and processing the data of the outside size of the vehicle with relating to the body number information detected by the body number detection equipment, the measurement result can be distinguished from results of other vehicles.
Furthermore, by using the vehicle position sensor, detecting the position of the vehicle, outputting the detection signals at every time when the vehicle moves the predetermined distance, and carrying out the synchronous control of a plurality of the 1st sensors and the 2nd sensor based on the detection signals outputted from the vehicle position sensor, the amounts of the deviation of the outside surface of the vehicle due to the swing of the vehicle can be measured accurately.
Furthermore, by using the 2nd sensor, irradiating the inspection light below to the floor of the vehicle, outputting the measurement signal which shows the position and the distance by receiving the light below from the floor of the vehicle, processing the measurement signal outputted from the 2nd sensor, and detecting the height of the bottom of the apparatus under the vehicle floor, which is prepared under the floor of the vehicle, the height of the bottom of the apparatus under the vehicle floor can be measured accurately while running the vehicle.
Furthermore, by creating the image which shows the distribution of the heights of the bottom of the apparatus under the vehicle floor, and specifying the measurement points, which are pointed out beforehand, on the created image, the inspection worker can arbitrarily point out the measurement points beforehand.
Furthermore, by creating the image which shows the distribution of the heights of the bottom of the apparatus under the vehicle floor after correcting the detected data of the heights of the bottom of the apparatus under the vehicle floor at the same interval according to the amount of the deviation of the bottom of the apparatus under the vehicle floor due to the swing of the vehicle, the image can be obtained accurately without any influence of the swing of the vehicle. Therefore, it is possible to detect differences by comparing the image with another image which was created about the same vehicle before.
Furthermore, by preparing the memory which memorizes the data of the height of the bottom of the apparatus under the vehicle floor, judging whether the measured height of the bottom of the apparatus under the vehicle floor is less than the predetermined value from the datum point which was beforehand set on the vehicle, and memorizing the judgment result in the memory, the good/bad judgement of the measurement result can be checked with the data memorized in the memory.
Furthermore, by preparing the display which displays the height of the bottom of the apparatus under the vehicle floor, and displaying the judgment result on the display, the inspection worker can easily know the good/bad judgement of the measurement result by checking the displayed contents.
According to the example shown in
In
The body number detection equipment 11 in the light receiving portion 10b consists of, for example, a camera and an image processing device, and it obtains an image of the body number written on a side surface of the vehicle and read the body number information.
In
The 1st sensors 25, 26 and the 2nd sensors 27, 28, 29 are sensors for obtaining the position information and the distance information of measurement objects.
The 1st sensor 25 is configured to include a laser light source 25a, a condenser lens 25b, and a light receiving element 25c. The laser light source 25a consists of, for example, a laser diode and a light irradiation lens, etc. and generates the inspection light S. The inspection light S generated from the laser light source 25a is irradiated to the vehicle, and the reflection light R from the vehicle is condensed by the condenser lens 25b and received by a light receiving surface of the light receiving element 25c. The light receiving element 25c outputs measurement signals depending on the intensity of the light received by the light receiving surface
In
In
The processing unit 40 is configured to include processing equipment 41, a memory 42 and a display 43. The processing equipment 41 is configured with a computer, or a sequencer, or dedicated circuits, etc. and performs a whole or a part of the data-processing operations which will be described later. The memory 42 memorizes measurement results under the control of the processing equipment 41. The display 43 consists of, for example, a flat panel display, etc. and displays the measurement results under the control of the processing equipment 41.
In the present embodiment, the control equipment 30 and the processing equipment 41 are prepared separately, but it is possible to gather them and name them as one part, or it is also possible to integrate them into the same equipment.
The vehicle width/vehicle height measurement unit 50 is configured to include a plurality of the 2nd sensors 51, but
When a front portion of the vehicle 4 enters into the train garage, the vehicle entry sensor 21 of the height measurement unit 20 detects the vehicle 4 and outputs the vehicle detection signal. The control equipment 30 receives the vehicle detection signal from the vehicle entry sensor 21 and starts the measurement (Step 103). During the measurement, the vehicle position sensor 24 generates the detection pulses at every time when the vehicle 4 moves the predetermined distance, for example 1 mm (Step 104). The control equipment 30 carries out the synchronous control of the 1st sensors 25, 26, the 2nd sensor 27, 28, 29 and a plurality of the 2nd sensors 51 by generating control pulses based on the detection pulses outputted from the vehicle position sensor 24 (Step 105).
The control equipment 30 transmits the body number information detected by the body number detection equipment 11, the measurement signals output from the 1st sensors 25, 26, the measurement signals output from the 2nd sensors 27, 28, 29, and the measurement signals output from a plurality of the 2nd sensors 51 to the processing equipment 41 of the processing unit 40 using a communication line such as a wireless LAN, etc. (Step 106). Or, in the case where the control equipment 30 performs a part of the data-processing operations which will be described later, the control equipment 30 transmits processing results to the processing equipment 41 using the communication line such as the wireless LAN, etc. The processing equipment 41 performs a whole or a part of the data-processing operations which will be described later (Step 107).
When the vehicle 4 moves further, the vehicle entry sensor 22 of the height measurement unit 20 detects the vehicle 4 and outputs the vehicle detection signal. When the vehicle 4 moves further, the vehicle entry sensor 23 of the height measurement unit 20 detects the vehicle 4 and outputs the vehicle detection signal.
After receiving the vehicle detection signal from the vehicle entry sensor 22, the control equipment 30 checks presence or absence of the vehicle detection signal of the vehicle entry sensor 22 (Step 108). As far as the vehicle entry sensor 22 is detecting the vehicle 4, the control equipment 30 continues the measurement. When the vehicle 4 moves further and the vehicle entry sensor 22 does not detect the vehicle 4 anymore, the control equipment 30 ends the measurement (Step 109).
After that the control equipment 30 checks presence or absence of the vehicle detection signal of the vehicle entry sensor 23 (Step 110). When the whole body of the vehicle 4 enters into the train garage and the vehicle entry sensor 23 does not detect the vehicle 4 anymore, the control equipment 30 switches the vehicle detection unit 10, the height measurement unit 20, and the vehicle width/vehicle height measurement unit 50 to the standby mode (Step 111).
Hereinafter, the data-processing operations will be explained in detail by taking a height measurement of the apparatus under the vehicle floor as an example, which is based on the measurement signals of the 1st sensors 25, 26, and the 2nd sensors 27, 28, 29 in the height measurement unit 20. By applying these data-processing operations to the measurement signals of a plurality of the 2nd sensors 51 in the vehicle width/vehicle height measurement unit 50, the outside sizes of the vehicle, such as a vehicle width, vehicle height, etc. will be measured. In the example, the processing equipment 41 performs a whole of the data-processing operations, but the control equipment 30 may also perform a part of the data-processing operations. The processing equipment 41 and the control equipment 30 process the data of the outside sizes of the vehicle with relating to the body number information detected by the body number detection equipment 11. With the body number information, the measurement result can be distinguished from results of other vehicles.
Distance-r in an X-axis direction between Middle point-C and Point-D, which is on the bottom of the apparatus 5 under the vehicle floor, shows the installation positions of the apparatus 5 under the vehicle floor in the rails width direction seeing from Middle point-C. Height size-l shows the height size of the apparatus 5 under the vehicle floor. Distance-W is a distance between Point-A and Point-B. The memory 42 in the processing equipment 41 memorizes the data of Distances-W, Distances-r and Height sizes-l of all apparatus 5 under the vehicle floor installed on the vehicle,
Unit vectors in the X-axis direction and in a Z-axis direction are set as shows in
In the present embodiment, the processing equipment 41 detects the positions and the heights of the side edges 4a in both sides of the vehicle 4 based on the measurement signals of the 1st sensors 25, 26, but it is possible to detect positions and heights of a plurality of other places of the vehicle 4. By calculating the amounts of the deviation of the bottom of the apparatus under the vehicle floor due to the swing of the vehicle 4 based on the amounts of the fluctuations of the detected positions and heights of a plurality of the places of the vehicle 4 (Step 202 in
At this time, the amounts of the deviation of the bottom of the apparatus under the vehicle floor due to the swing of the vehicle 4 are changing time after time depending on a travelling movement of the vehicle 4. In the present embodiment, by carrying out the synchronous control of a plurality of the 1st sensors 25, 26 and the 2nd sensors 27, 28, 29 (Step 105 in
Next in
Next, the processing equipment 41 specifies the measurement points, which are pointed out beforehand, on the created bottom height image (Step 206), and extracts the data of the heights of the bottom of the apparatus under the vehicle floor at the specified measurement points (Step 207). By creating the bottom height image and specifying the measurement points, which is pointed out beforehand, on the created bottom height image, the inspection worker can arbitrarily point out the measurement points before the inspection using the vehicle size measurement apparatus 100. When pointing out the measurement points, is possible to use, for example, a bottom height image which was created about the same vehicle before.
Next in
Next in
At first, the processing equipment 41 detects the positions and the heights of the side edges 4a in both sides of the vehicle 4 based on the measurement signals of the 1st sensors 25, 26. And the processing equipment 41 detects the heights of the bottom of the apparatus under the vehicle floor at the same interval based on the measurement signals of the 2nd sensors 27, 28, 29 (Step 301). Next, the processing equipment 41 performs adjustments in a perpendicular direction on the detected data of the heights of the bottom of the apparatus under the vehicle floor (Step 302). In these adjustments, for example, a middle point of the side ledge 4a in the left side and the side edge 4a in the right side in a front/rear view of the vehicle 4 is set as a datum point beforehand, and the data of the heights of the bottom of the apparatus under the vehicle floor is converted to the data of perpendicular distances from the datum point. Then the processing equipment 41 creates a bottom height image, which shows the distribution of the heights of the bottom of the apparatus under the vehicle floor, using the adjusted data of the heights (Step 303).
Next, the processing equipment 41 specifies the measurement points, which are pointed out beforehand, on the created bottom height image (Step 304), and extracts the data of the heights of the bottom of the apparatus under the vehicle floor at the specified measurement points (Step 305). By creating the bottom height image and specifying the measurement points, which are pointed out beforehand, on the created bottom height image, the inspection worker can arbitrarily point out the measurement points before the inspection using the vehicle size measurement apparatus 100. When pointing out the measurement points, for example, a map showing positions under the floor of the vehicle 4 can be used, or the inspection worker may input XY coordinate of the measurement points. Or, it is possible to prepare a line-sensor in addition to the 1st sensors 25, 26 and the 2nd sensors 27, 28, 29 for obtaining a 2-dimensional image of the bottom of the vehicle 4 and to point out the measurement points using the 2-dimensional image created before.
Next, the processing equipment 41 calculates the amounts of the deviation of the bottom of the apparatus under the vehicle floor due to the swing of the vehicle 4 based on amounts of fluctuations of the positions and the heights of the side edges 4a, which are detected when measuring the specified measurement points (Step 306). Then the processing equipment 41 corrects the data of the heights of the bottom of the apparatus under the vehicle floor at the measurement points according to the calculated amount of the deviation (Step 307). In the present embodiment, comparing with a case of correcting all the detected data of the heights of the bottom of the apparatus under the vehicle floor at the same interval according to the amount of the deviation due to the swing of the vehicle 4, amounts of the processing data can be reduced.
Next, the processing equipment 41 judges whether the heights of the bottom of the apparatus under the vehicle floor at the measurement points are less than a predetermined value from a datum point which was beforehand set on the vehicle (Step 308), and memorizes a judgment results in the memory 42 (Step 309). The good/bad judgement of the measurement result can be checked with the data memorized in the memory 42. Next, the processing equipment 41 displays the judgement results together with the measurement results on the display 43 (Step 310). Therefore, the inspection worker can easily know the good/bad judgement of the measurement result by the checking displayed contents.
In the above explained data-processing operations, a whole or a part of Steps 201-208 in
According to the above described embodiments, the following effects are obtained.
(1) It is possible to measure the outside size of the vehicle accurately while running the vehicle.
(2) Furthermore, by using the body number detection equipment 11, detecting the body number information given to the vehicle, and processing the data of the outside size of the vehicle with relating to the body number information detected by the body number detection equipment 11, the measurement result can be distinguished from results of other vehicles.
(3) Furthermore, by using the vehicle position sensor 24, detecting the position of the vehicle, outputting the detection pulses at every time when the vehicle moves the predetermined distance, and carrying out the synchronous control of the 1st sensors 25, 26, the 2nd sensor 27, 28, 29 and a plurality of the 2nd sensors 51 based on the detection pulses outputted from the vehicle position sensor 24, the mounts of the deviation of the outside surfaces of the vehicle due to the swing of the vehicle can be measured accurately.
(4) Furthermore, by using the 2nd sensors 27, 28, 29, irradiating the inspection lights below to the floor of the vehicle, outputting the measurement signals which show the positions and the distances by receiving the lights below from the floor of the vehicle, processing the measurement signals outputted from the 2nd sensors 27, 28, 29, and detecting the heights of the bottom of the apparatus under the vehicle floor, which is prepared under the floor of the vehicle, the heights of the bottom of the apparatus under the vehicle floor can be measured accurately while running the vehicle.
(5) Furthermore, by creating the bottom height image which shows the distribution of the heights of the bottom of the apparatus under the vehicle floor, and specifying the measurement points, which is pointed out beforehand, on the created bottom height image, the inspection worker can arbitrarily point out the measurement points beforehand.
(6) Furthermore, by preparing the memory 42 which memorizes the data of the heights of the bottom of the apparatus under the vehicle floor, judging whether the measured heights of the bottom of the apparatus under the vehicle floor are less than the predetermined value from the datum point which was beforehand set on the vehicle, and memorizing the judgment results in the memory 42, the good/bad judgement of the measurement result can be checked with the data memorized in the memory 42.
(7) Furthermore, by preparing the display 43 which displays the heights of the bottom of the apparatus under the vehicle floor, and displaying the judgment results on the display 43, the inspection worker can easily know the good/bad judgement of the measurement result by checking the displayed contents.
Furthermore, according to the 1st embodiment shown in
(8) By creating the bottom height image which shows the distribution of the heights of the bottom of the apparatus under the vehicle floor after correcting the detected data of the heights of the bottom of the apparatus under the vehicle floor at the same interval according to the amount of the deviation of the bottom of the apparatus under the vehicle floor due to the swing of the vehicle, the bottom height image can be obtained accurately without any influence of the swing of the vehicle. Therefore, it is possible to detect differences by comparing the image with another image which was created about the same vehicle before.
Furthermore, according to the 2nd embodiment shown in
(9) Comparing with a case of correcting all the detected data of the heights of the bottom of the apparatus under the vehicle floor at the same interval according to the amount of the deviation due to the swing of the vehicle, the amounts of the processing data can be reduced.
By measuring the outside size of the vehicle using the vehicle size measurement apparatus and the vehicle size measuring method according to the present invention, and then carrying out a check by worker's hand only when the measured value exceeds a predetermined value, it is possible to reduce time and efforts of inspection and maintenance works. Furthermore, by frequently measuring the outside size of the vehicle using the vehicle size measurement apparatus and the vehicle size measuring method according to the present invention and analyzing the measured data, it is possible to detect a bad omen of any trouble such as a loosening of the apparatus under the vehicle floor.
The 1st sensors and the 2nd sensor used in the present invention are not limited to an element which receives a reflection light from the vehicle, but also applied to an element which receives a scattering light from the vehicle.
In the embodiments described above, the positions and the heights of two places of the vehicle are detected using two of the 1st sensors, but it is possible to prepare three or more of the 1st sensors and detect three or more places of the vehicle.
Furthermore, in the embodiments described above, three of the 2nd sensors, which detect the height of the bottom of the apparatus under the vehicle floor, are prepared, but the number and the arrangement of the 2nd sensor are not limited to the embodiments. As the same, the number and the arrangement of the vehicle entry sensor, which detects presence or absence of the vehicle, are not limited to the embodiments. Also, the number and the arrangement of a plurality of the 2nd sensors in the vehicle width/vehicle height measurement unit are not limited to the embodiments.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2018-148864 | Aug 2018 | JP | national |
