JP2005337714A - On-roof apparatus monitoring/measuring device for railroad vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To locate an on-roof apparatus monitoring device and a pantograph contact strip thickness measuring device on a same support building structure without causing them to affect each other's function, to acquire an image with a boundary position clearly taken therein between a contact strip top surface and a contact strip side surface without being affected by disturbance light in the event of outdoor installation, and to perform image processing at a high speed with high accuracy. <P>SOLUTION: A pantograph inspection device is used for inspecting at least abrasion of a contact strip of a pantograph. The inspection device is equipped with a lighting means for illuminating the pantograph by a plurality of lighting systems different from each other in condition, an imaging means for acquiring image data including the contact strip by imaging the pantograph by a plurality of CMOS cameras different from each other in condition from the side surface direction thereof, and an image processing means for selecting data on an image in which the shape of the contact strip is most clearly imaged from among image data imaged by the imaging means to find an abrasion amount of the contact strip. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to automatic monitoring of equipment on a roof such as a railway vehicle and automatic measurement of a pantograph sliding plate thickness.

  Since the pantograph collects electricity by contacting an overhead electric wire while the electric vehicle is running, the sliding plate is easily worn. For this reason, inspection of the wear amount, scratches, etc. of the sliding plate is performed.

  In this inspection, the inspector goes up on the roof of the electric car, visually inspects the wear amount of the sliding plate and also the scratches one by one, and it is necessary to replace the sliding plate for the defective sliding plate. To do.

  As an automated inspection, an ultrasonic sensor is used to measure the distance from the sensor position to the sliding plate to determine the amount of wear and the state of wear on railroad vehicle roof equipment, particularly pantographs, using a CCD camera. As an apparatus for doing this, there is one proposed in Patent Document 1.

  In this method, the upper end position of the sliding plate, the lower end position of the sliding plate, and the distance between them are obtained from the image data, and the thickness is measured based on the upper end position of the sliding plate and the lower end position of the sliding plate with respect to the obtained interval. In addition, the wear amount of the sliding plate is inspected.

JP-A-9-265524

  However, the work that the inspector goes up on the roof of the electric car and visually inspects and confirms it is always dangerous because it is a high place work that goes up on the roof of the electric car. Confirmation is a hard work.

  In ultrasonic measurement, the amount of wear cannot be measured continuously, and there are drawbacks that depend on the measurement environment.For example, in the case of rainy weather, water drops are measured to determine the wrong amount of wear, or measurement errors due to the influence of wind. Temperature correction is necessary to eliminate the influence of temperature. Further, it is impossible to visually check the wear state of the sliding plate and the state of scratches. In addition, since the positional relationship between the ultrasonic sensor and the sliding plate needs to be constant, if the sliding plate is tilted, the wear amount of the sliding plate cannot be measured accurately, and the effect of scratches on the surface of the sliding plate, etc. Therefore, it is impossible to measure the exact amount of wear.

  The method proposed in Patent Document 1 is only intended to measure the thickness of a pantograph slip plate, and does not consider monitoring the state of other roof equipment. In addition, the image quality of a high-contrast image that can be detected with high accuracy by image processing is different from that of an image that is easy for humans to see. Therefore, it is difficult to visually check the surface condition of the sliding plate using an image captured for detecting the wear amount of the sliding plate.

  In the measurement method, the average position is detected based on the density of the sliding plate and the auxiliary sliding plate, but the surface of the pantograph is extremely dirty and cannot detect a stable concentration. In addition, because stable concentration is not measured due to ambient light such as sunlight and moonlight during outdoor installation, and environmental changes such as rain and snow, based on the upper end position of the sliding plate and the lower end position of the sliding plate, Thickness cannot be measured.

  In general, in order to increase detection accuracy, a high resolution of the camera is required. However, as the resolution increases, the image data becomes enormous in size and takes time to capture. In addition, since the CCD camera used needs to capture the entire screen into the memory, there is a problem that it takes a huge amount of memory, and it takes time to capture and process the image, and only arbitrary image data is captured. Therefore, an image including disturbance light is captured, and it is easy to erroneously detect a sliding plate edge as noise or a flaw.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an on-roof equipment monitoring and measuring apparatus that can measure the wear amount of a pantograph sliding plate with high accuracy and high speed and can simultaneously monitor the state of the on-roof equipment.

  In a pantograph inspection apparatus for inspecting at least wear of a pantograph slide plate, an illuminating means for irradiating the pantograph with a plurality of illumination devices having different conditions, and a pantograph by a plurality of CMOS cameras having different conditions from the lateral direction of the pantograph. An image pickup unit capable of obtaining an arbitrary image data size including the image data, and image data in which the shape of the slide plate is most clearly picked up from the image data picked up by the image pickup unit, and the wear amount of the slide plate is obtained. And a pantograph inspection device which includes an image processing means and intends to achieve the above object.

  In the present invention, by capturing only the image of the portion where the entire panter is reflected as the image data size, the memory size to be saved can be reduced, and at the same time, the influence of disturbance light is reduced, Image processing time can be shortened.

  Further, by setting the boundary position measurement range between the upper surface of the sliding plate and the side surface of the sliding plate to be narrow, false detection due to noise can be reduced, and measurement can be performed at high speed and with high accuracy. According to the present invention, it is possible to automatically measure the amount of wear of a sliding plate at high speed and with high accuracy even in a railway vehicle traveling at high speed.

  In order to measure pantograph wear with high accuracy and high speed, it is necessary to clarify the characteristic component of the brightness of the detection target portion and limit the measurement region as narrowly as possible.

  The present invention proposes a method for measuring the wear of the plate after suppressing the influence of disturbance light, increasing the luminance gradient of the upper surface of the slide plate and the side surface of the slide plate, and limiting the measurement area.

An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 shows a side view of one embodiment of the rooftop equipment monitoring and measuring apparatus of the present invention.

  By the way, when installing the imaging device support building so as to sandwich the railroad track, it is necessary to make the structure firmly so as not to affect the operation of the vehicle and the power supply from the overhead line to the vehicle. . In addition, in order to ensure safety, it may be necessary to insulate the suspension wires, and construction requires considerable technology, time, and funds. For this reason, a problem can be solved by setting it as the structure equipped with both the said roof equipment monitoring apparatus and the said panta-slip board thickness measuring apparatus simultaneously on one building.

  Therefore, in FIG. 1, the apparatus support structure 1 is installed so that the track 15 is sandwiched between the entry / exit line of the railway vehicle garage and the like. This device support structure is composed of four columns 16 standing on both sides of the track, and beams (beams) 17 and 18 connecting the upper portions of the columns 16. The beam consists of two beams 18 that are long in the direction parallel to the track and two beams 17 that are long in the direction perpendicular to the track. On the beam 17, a plurality of roof equipment monitoring cameras 3 for monitoring the equipment on the roof of the vehicle 20 toward the inside of the building 1, and the outside of the building 1 (the traveling direction or the leaving direction of the vehicle). A plurality of slide plate imaging CMOS cameras 2 are installed for measuring the thickness of the pantast plate. The on-roof equipment monitoring camera 3 is installed so as to be able to take an image on the roof of the vehicle so as to face diagonally upward in order to photograph the front, rear, left and right of the equipment installed on the vehicle roof without blind spots. Further, in this embodiment, the other camera 3 for photographing the front side in the vehicle traveling direction is installed so that an image can be taken around the central portion where the rooftop equipment is concentrated. Furthermore, on the beam 18 on both sides installed in parallel with the track, a roof equipment monitoring illumination 11 composed of a plurality of halogen lamps is provided toward the inside of the building 1 so as to illuminate the roof of the vehicle. .

  A strobe flash 10 that operates in conjunction with a plurality of CMOS cameras 2 having different conditions for measuring the thickness of the pantograph on a beam 17 that is long in a direction perpendicular to the track, and a strobe flash that illuminates the top of the slide. 10 'is installed.

  In the measurement of the wear amount of the sliding plate, the boundary position between the upper surface and the side surface of the sliding plate is detected from image data. The image data is a luminance value of the captured image. In the image processing, the boundary position between the upper surface and the side surface of the sliding plate is detected from the characteristic component of the luminance value. Therefore, it is necessary to increase the brightness difference between the top and side surfaces of the sliding plate and to sharpen the boundary position. In order to detect with high accuracy, the arrangement and strength of the strobe flash 10 and strobe flash 10 ′ are adjusted, It is necessary to enhance the characteristics of the luminance value.

  The side of the pantograph including the scraper is easily soiled and has an extremely low light reflectance. On the other hand, the new pantograph has a high light reflectance and is prone to halation even when exposed to weak light. I know. For this reason, the luminance value varies greatly depending on the surface condition of the pantograph only by irradiating light to the side surface of the sliding plate, and the boundary position between the upper surface of the sliding plate and the side surface of the sliding plate may not be detected in image processing.

  In addition, in outdoor installation, the pantograph is illuminated from above by strong light such as sunlight (moonlight), so the luminance value of the top surface of the sliding plate may be high, and conversely, the luminance value of the side surface may be lower. .

  Therefore, in the present invention, the strobe flash 10 that illuminates the side surface of the sliding plate is irradiated from the same direction as the imaging direction of the CMOS camera, and the strobe flash 10 ′ that illuminates the upper surface of the sliding plate is disposed at the upper surface position of the pantograph. The intensity of the light at this time is adjusted by strengthening the strobe flash 10 'compared to the strobe flash 10, and the brightness difference is strengthened by illuminating the upper surface of the sliding plate brightly and illuminating the side of the sliding plate so that it becomes dark with weak light. The boundary position can be emphasized. With the adjustment described above, the luminance value on the top surface of the sliding plate can always be kept high and the luminance value on the side surface can be kept low even if there is an influence of disturbance light during outdoor installation.

  Further, the wavelength of each strobe flash may be changed. For example, an image having spectral characteristics may be obtained by irradiating red light from the side surface of the sliding plate and irradiating blue light from the upper surface.

  Also in the adjustment of the CMOS camera, an adjustment according to the environmental situation is required. In outdoor installations, there are situations where the surroundings are bright like the daytime and dark like the night. Even at night, the pantograph may be brightly illuminated by the full moon. When strong natural light such as sunlight or full moon enters the CMOS camera, a shadow such as white blur may occur on the captured image.

  Many of the chips generally used for industrial cameras control information with an electronic shutter. For this reason, information in the chip is cleared immediately before imaging, and is transferred to the outside of the chip immediately after imaging. When strong light hits during the transfer, there is a flow of light called smear that draws a line, which appears like a white shadow, and the boundary position between the top and side of the sliding plate may not be clearly visible . For this reason, the camera imaging adjustment set to a certain condition cannot cope with the changing environmental conditions. For example, it is also necessary to adjust the light amount of the camera assuming strong light. On the other hand, on a rainy day at night or in the daytime, the surroundings become dark, and with the camera light amount adjustment assuming strong light, sufficient light cannot be acquired, and a dark image is obtained.

  Therefore, in the present invention, two types of cameras are prepared: a camera that captures images in a bright environment and a camera that captures images in a dark environment. Each has a bright environment camera adjustment function and a dark environment camera adjustment function. In the bright environment camera adjustment, the iris diaphragm aperture is weakened and the exposure time is adjusted compared to the dark environment camera adjustment.

  The CMOS camera can be accessed at random, and reads only image data including the periphery of the pantograph that is long in the longitudinal direction, stores it in memory, and measures it. In this way, by capturing the image (imaging size 5-1) surrounded by the dotted frame shown in FIG. 5, the image data size to be processed can be reduced, and the image data can be captured at high speed. Further, since the image size is reduced, the image processing time can be shortened.

  On the ground side, a composition number detection device 9 having a wireless communication function for detecting the composition number of the vehicle, a vehicle detection sensor 6 for detecting the entry of the vehicle, and a pantograph detection for detecting the passage of the pantograph 4 A sensor 5 and the like are provided.

  FIG. 2 shows an outline of the control system configuration of each device in FIG. As shown in FIG. 2, in this system, when divided roughly, it receives information from the pantast board measuring device 35, the on-roof device imaging device 45, and the two devices, determines the thickness of the slip plate, and determines the state of the on-roof device. It is comprised from the information processing apparatus 50 which accumulate | stores the image which monitors.

  The pantograph measuring device 35 mainly emits light at a predetermined timing to the pantograph and a CMOS camera 2 for picking up a plurality of slides with different conditions in order to take an image of the pantograph plate as described above. A plurality of stroboscopic flashes 10 and stroboscopic flashes 10 'for irradiating, a punter detection sensor 5 for detecting the passage of the punter at a predetermined position, the CMOS camera 2 for imaging the sliding plate, the stroboscopic flash 10 and the stroboscopic flash 10'. The control device 30 for measuring the thickness of the punter plate for controlling the above. In addition, the control device 30 can receive signals from the vehicle detection sensors 6 and 7 and a signal from the vehicle composition number detection device 9.

  The on-roof device imaging device 45 includes a plurality of on-roof device imaging cameras 3 for on-roof device imaging, an on-roof device monitoring illumination 11 including a plurality of halogen lamps for illuminating the vehicle roof, and the roof. And an upper monitoring control device 40. Furthermore, the panter detection sensor 5, the vehicle detection sensors 6, 7 and the vehicle composition number detection device 9 which are also used in the previous panta-slip plate measuring device 35 are shared, and these are connected to the rooftop monitoring control device 40 by a signal cable or the like. It is connected. In addition, the pantast board measuring device 35 and the on-roof equipment imaging device 45 are connected to the information processing device 50 by an optical cable.

  In this information processing apparatus 50, when the wear amount is determined based on the image information from the panta-slip plate measuring device 35 and a wear plate that has caused abnormal wear is detected, an alarm is issued to prompt the wearer to replace the wear plate. It has a function to predict the replacement time and notify the administrator. In addition, the image signal from the rooftop apparatus imaging device 45 has a function of adding and storing the imaging date and time in accordance with the vehicle organization number. Note that the administrator has a function of monitoring the state of equipment on the roof and the surface state of the pantograph in the state of moving images as well as still images.

  Next, details of the operation of each device will be described.

  First, in the pantast plate measuring device 35, when the vehicle detection sensor 6 first detects the entry of the vehicle 20 to the measurement position, the punter detection sensor 5 starts detecting the presence or absence of the panter 4, and a CMOS camera for pantast plate measurement. 2 is also ready for imaging. When the pantograph detection sensor 5 on the vehicle entry side detects the pantograph 4, the strobe flash 10 and the strobe flash 10 'on the vehicle entry side are caused to emit and emit light. At the same time, a plurality of pantastrum image capturing CMOS cameras 2 capture images of the pantastrum plate part, and capture the captured images in the memory of the control device 30. The captured image data is subjected to image processing by the control device 30. Thereafter, when the punter detection sensor 5 on the vehicle exit side detects the panter 4, the strobe flash 10 and the strobe flash 10 ′ on the vehicle exit side emit light, and at the same time, the pantast plate image capturing for capturing an image of the panter slide plate portion in the same direction. The CMOS camera 2 for photographing the panther-slipping plate portion captures the photographed image into the memory of the control device 30. Then, the image processing is performed by the control device 30 as in the front side.

  In this embodiment, a CMOS digital camera is used as a measurement camera, and one boat is divided by two daytime CMOS cameras 5a and 5b (for night use, 5C and 5d) to cover the entire sliding board. Images were taken to In addition, the imaging area | region of the adjacent CMOS camera made the overlapping part including the location which has a characteristic shape mutually.

  This image processing procedure is shown in FIG.

  In 3-1, an image that is most clearly captured is selected from the image data captured in the memory of the control device 30. The selection method is determined based on the imaging time and the average luminance of the captured image. By imaging time, images taken with a bright environmental CMOS camera are used in the AM7: 00-PM 5:00 time zone, and images taken with a dark environmental CMOS camera are used in other time zones. To do. Thereafter, the average luminance value of the image captured by the bright environmental CMOS camera and the luminance value of the upper surface of the sliding plate and the luminance difference of the side surface are measured. When the measured luminance is smaller than an arbitrary luminance value, it is determined that the entire screen is dark and the sliding plate shape is not clearly displayed, and the image is switched to an image captured by a dark environment CMOS camera. Conversely, the average luminance value of the image captured by the dark environment CMOS camera, and the luminance value of the upper surface of the sliding plate and the luminance difference of the side surface are measured. If the value is larger than an arbitrary value, it is determined that the entire screen is bright and that the shape of the sliding plate is not clearly displayed, and an image captured by a bright environmental CMOS camera is employed. Thereby, it becomes possible to process clearly with an image without being affected by ambient disturbance light.

  In the image superimposing process referred to as 3-2 mosaic processing, the images of the selected image groups 5a, 5b, 5C, and 5d are superimposed to create one image. The overlapping position of the image is determined by taking into consideration the characteristic shape, for example, the imaging position of the same screw 4-5 captured by the CMOS camera of 4-1 and 4-2 shown in FIG. One captured image 4-4 showing the entire image is created. At this time, distortion of an image generated at the time of imaging may be corrected.

  In image processing, recognition processing is performed twice. In the first time, it is roughly detected whether the boundary line between the upper surface and the side surface of the pantograph in the captured image is located, and in the second recognition process, the characteristic of the luminance value from the boundary position of the first pantograph is detected. The component is obtained, and the boundary position between the upper surface and the side surface of the sliding plate is detected. With this processing, it is possible to narrow down the image data to be further processed, and to measure only the desired boundary position without measuring the entire screen with high accuracy and high speed.

  The pantograph imaging position using the vehicle detection sensor 6 as an imaging trigger has a variation of several tens of pixels. For this reason, in the first recognition process, a binarization measurement region is provided in the vicinity of the image which is considered to be in the vicinity of the panter imaging position in the image, and the slab edge is measured.

  In the 3-3 rough positioning process, an object which is a part of a pantograph having a luminance value higher than an arbitrary threshold value is detected. And the location used as the feature-value of the target object, for example, the base of the target object, is binarized and detected. The binarized threshold value may be stored in advance in the memory of the control device 30, or may be automatically set based on average luminance / luminance deviation information of the captured image.

  The adjustment of the strobe flash 10 and strobe flash 10 'is set in advance so that the luminance difference between the top surface of the slide plate and the side surface of the slide plate becomes large. Also, because the iris top is adjusted so that the top surface of the pantograph is bright and the side is slightly dark, and the background is dark, the brightness value of the top and side of the slide plate can be set to any threshold value. If it is set to the middle, only the binarized object on the upper surface of the sliding plate can be measured. The bottom side of the object is a boundary position between the sliding plate and the side surface of the sliding plate, and shows a rough edge portion to be detected. In the binarization process, since measurement is performed in units of pixels, the detection accuracy varies by several pixels.

  Moreover, in the detection of the target object by binarization, the influence of noise may be large. Therefore, when several objects are detected at the same time, a size check in the area, length, and width direction is performed, and if it is different from the planned size, it is determined as noise and determined as other than the pantograph. Further, when there is a variation in brightness and unevenness occurs in the binarized image, the concave portions are filled and the convex portions are deleted.

  Alternatively, the position of the auxiliary sliding plate may be detected by pattern matching using normalized correlation of luminance and shape, and the boundary position between the sliding plate and the side surface of the sliding plate may be obtained.

  In the 3-4 leveling process, the boundary position between the upper and side surfaces of the left and right auxiliary slide plates of the pantograph is measured, the pantograph inclination is calculated from the measured left and right results of the pantograph, and the pantograph auxiliary slide plate is positioned horizontally with respect to the angle of view. The captured image is rotated so that The rotational interpolation of the captured image can be measured with high accuracy by making the measurement object horizontal and parallel to the pixels of the grid.

  In the boundary position measurement between the top surface and the side surface of the 3-5 ground plate, a location where the brightness value changes most rapidly than the brightness difference between the top surface and the side surface of the ground plate is measured as the boundary position (slide plate position). In the first recognition process, the boundary position between the upper surface and the side surface of the grinding plate is roughly measured, and a measurement region 5-4 for measuring the boundary position is set along the main measurement data. This operation is all performed on the pantograph slide plate from the upper surface direction of the pantograph auxiliary slide plate. For example, the boundary position between the sliding plate and the side surface of the sliding plate from the left auxiliary sliding plate upper surface 5-2 direction to the right direction of the superimposed pantograph image to the auxiliary sliding plate upper surface 5-3 of the right pantograph is detected. Go.

  Further, when the measurement area 5-4 deviates from the boundary position between the upper surface and the side surface of the sliding plate, the measurement result of the adjacent pixel is diverted and automatically adjusted so that the measurement area center is located at the measurement result position. For example, as shown in FIG. 5, when the measurement data is measured below the measurement area 5-4 at an arbitrary position, in the next measurement, measurement is performed at a location where the center of the measurement area and the previous measurement result center coincide. Lower the region 5-4 downward. At this time, the position correction value may be weighted.

  As a result, the measurement area can be set small, and the center of the sliding plate measurement area is always located at the boundary position between the upper surface and the side surface of the sliding plate, and image data other than the boundary position between the upper surface and the side surface of the sliding plate is excluded. Therefore, the flaws and dirt on the side surface are not erroneously detected as the boundary position between the upper surface and the side surface of the slip plate.

  In the calculation process for the digitized image, the difference calculation is performed instead of the differential calculation method as the detection method of the place where the luminance value changes most rapidly, and the horizontal direction value is calculated with respect to the left and right pixel values of the target pixel. Multiply each coefficient matrix and sum the results. An arbitrary threshold value is provided for the result of multiplication, and a region greater than the arbitrary threshold value is set as a region boundary. At this time, the characteristic component as a result of the multiplication may be taken out and it may be determined whether or not the target object is to be detected. Further, if the digitized image data is supplemented by 10 times or 30 times, high-precision measurement can be performed in units of subpixels. In the interpolation method, if the luminance values between pixels are connected by linear interpolation and curve interpolation, for example, Lagrange's interpolation formula, and divided by 10 and 30, the pixel unit can be converted to 1/10 or 1/30. I can do it.

  In calculating the wear amount of the 3-6 sliding plate, the pixel position is converted into mm data by multiplying the detected boundary position data between the upper surface and the side surface of the sliding plate by the CMOS camera resolution in consideration of distortion and aberration of the CMOS camera.

  It has been empirically known that the surface of the pantograph auxiliary sliding plate is not affected by shaving. Therefore, the upper surface of the auxiliary sliding plate is set as a reference height, and the amount of scraping from the location of the auxiliary sliding plate is detected as the amount of scraping plate scraping. Alternatively, the edge position of the bottom surface of the sliding plate may be measured to calculate the amount of scraping of the ground plate when the bottom surface of the sliding plate is the reference height.

  The detected amount of scraped board scraping is transmitted to the information processing apparatus 50 connected by an optical cable together with the vehicle organization number separately captured by the control apparatus 30, and stored in a storage unit provided in the information processing apparatus. Further, the information processing apparatus 50 obtains a change in the wear state of the sliding plate by using the thickness measurement value and measurement date / time data of the sliding plate of the same vehicle composition number previously measured and recorded, and becomes the wear amount to be replaced. The date and time are predicted and the result can be notified. Further, the value of the measured wear amount of the sliding plate approaching the wear amount for replacing the sliding plate is defined as the first reference value (caution reference value), and the wear amount to be replaced is defined as the second reference value (warning reference value). And when the measured value exceeds these reference values, the state is notified respectively. That is, a caution alarm is issued when the value is between the first reference value and the second reference value, and a warning alarm is issued when the second reference value is exceeded. Further, when the sliding plate is abnormally worn or has a surface abnormality, an alarm is immediately issued.

  Also, check that the measured data is correct. For example, in the same punter of the same organization, the wear amount of the scraper is estimated based on the measurement date and time data. If the wear amount becomes extremely large in a short time, the operator is warned and reconfirmed. . On the other hand, even if the wear amount of the sliding plate does not decrease for a long time, the operator can be warned and reconfirmed.

  At this time, a manual intervention system may be provided in which an operator selects and measures the boundary position between the upper surface and the side surface of the sliding plate and the reference position from the image.

Next, the operation of the rooftop apparatus imaging device 45 will be described.
As shown in FIG. 1, the on-roof equipment imaging device 45 has three on-roof equipment imaging cameras 3 installed on the front front, obliquely forward, and obliquely rearward, and installed on the roof equipment monitoring and measuring device. Photographs on the roof of the approaching vehicle 20 from 3 directions so that there is no blind spot.

  Image data captured by each camera is transmitted to the information processing device 50 via an optical cable, where it is displayed on a separate monitor device, and moving images and still images are compressed along with the vehicle organization number and imaging date and time. Remembered. The administrator can observe the state of the equipment on the roof repeatedly in a moving image or still image state by looking at the monitor screen, and there is an effect that the state on the vehicle roof can be confirmed in detail by enlarging and reducing the still image. Further, it is not necessary for the person to climb on the roof by stopping energization of the overhead line and grounding the overhead line for inspection work. In addition, the pantograph passing time can be known from the signal of the pantograph detection sensor 5 ', and the number of frames when the pantograph passes is detected and recorded, and the image around the pantograph where the rooftop equipment is most concentrated. Can be searched and displayed quickly. In addition, it is possible to easily call an image captured based on the imaging date and time or the vehicle organization number on the monitor.

It is a figure which shows the structure of an on-roof equipment monitoring apparatus and a panta-slip board thickness measuring apparatus. It is the figure which showed the signal processing system of the equipment monitoring measuring apparatus on a roof. It is the figure which showed the flow which calculates | requires a panta-slip board thickness. It is the figure which showed the outline of the captured image. It is a figure explaining the random access of the image data by a CMOS camera.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Device support structure, 2 ... CMOS camera for pant-slip board measurement, 3 ... Camera for roof top equipment monitoring, 4 ... Pantograph, 5 ... Punter detection sensor, 6 ... Vehicle detection sensor (entrance side), 7 ... Vehicle detection Sensor (entrance side), 8 ... Knitting number information transmitting device, 9 ... Knitting number detecting device, 10 ... Strobe flash for side surface irradiation, 10 '... Strobe flash for top surface irradiation, 11 ... Lighting for monitoring equipment on the roof, 5' ... Punter detection sensor for monitoring equipment on the roof, 15 ... track, 16 ... support, 17 ... beam, 18 ... beam, 20 ... vehicle.

Claims (3)

In a railway vehicle roof equipment monitoring and measurement apparatus equipped with a roof equipment monitoring device that monitors the roof of the vehicle and a pantograph board thickness measuring device that measures the pantograph sliding board thickness while the railway vehicle is running.
A plurality of illumination means having different light characteristics with respect to the pantograph, and a plurality of imaging means and control devices having different imaging conditions in the lateral direction of the pantograph,
The control device selects an image in which the shape of the sliding plate is most clearly picked up from the image data picked up by the image pickup means, and rubs a measurement range for detecting the boundary position between the upper surface of the sliding plate and the side surface of the sliding plate. A device for monitoring and measuring equipment on a roof for a railway vehicle, which has a function of automatically correcting the position according to the amount of wear of a plate and a function of measuring the amount of wear of a sliding plate.   2. The apparatus for monitoring and measuring equipment on a roof for railway vehicles according to claim 1, wherein the imaging means comprises a plurality of CMOS cameras.   The apparatus for monitoring and measuring a roof vehicle equipment for a railway vehicle according to claim 1, wherein a plurality of pieces of image data picked up by the image pickup means are connected in advance and then the wear of the sliding plate is measured. Equipment for monitoring and measuring on-roof equipment for railway vehicles.

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