CN101913367A - Railway wheel tread scratch image dynamic detection device - Google Patents
Railway wheel tread scratch image dynamic detection device Download PDFInfo
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- CN101913367A CN101913367A CN2009101579646A CN200910157964A CN101913367A CN 101913367 A CN101913367 A CN 101913367A CN 2009101579646 A CN2009101579646 A CN 2009101579646A CN 200910157964 A CN200910157964 A CN 200910157964A CN 101913367 A CN101913367 A CN 101913367A
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Abstract
The invention discloses a railway wheel tread scratch image dynamic detection device, belonging to the technical field of machinery detection equipment structure carrying out detection on railway (vehicle) wheel tread. The detection device comprises a plurality of scratch detection camera cases provided with built-in camera, a wheel positioning system, an image acquisition system and a control circuit are utilized, an industrial personal computer is utilized to detect wheel pair image shot by a camera which is fixedly arranged and wheel pair safety state. The device can be used for wheel pair detection on vehicles passing through main line of railway, wheel pair detection when motor train unit is put in storage and wheel pair detection when locomotive is put in storage and can dynamically measure fault state of wheel pair tread of train in normal operation, including wheel faults of scratch, stripping, ground pile and the like, so that overhauling person can timely handle the wheel fault of train and the train is ensured to operate safely.
Description
Technical field
The present invention relates to a kind of railway wheel tread scratch image dynamic detection device, belong to the technical field of mechanical equipment detecting device structure, belong to the technical field of the mechanical detection device structure that railway locomotive (vehicle) wheel tread is detected specifically.
Background technology
In the railway utilization, running part is especially taken turns has vital function to running state to train safe.The wheel that safety is produced vital function comprises parameter: wheeling edge wearing, circumference abrasion, flat sliding etc.When scratch occurring, peel off and grinding fault such as heap when wheel tread, in train travelling process, can produce extra impulsive force, rail life is reduced, also can cause crackle and fracture when serious rail.Attrition fault is returned vehicle itself and is brought impact when hitting rail, produces vibrations, and vehicle bearing is produced destructive effect.
At present, the right detection of dynamic of China railways wheel also rests on the manual stage, and operating conditions is poor, labour intensity is big, efficiency is low.And the car inspection and maintenance maintenance that acts out one's plan, the wheel parameter changing condition of operational vehicle and catastrophic failure are difficult in time finding as scratch etc., and the hand inspection work capacity is big, and omission easily takes place.
Existing wheel is generally Static Detection equipment to automatic measuring equipment, wheel need be decomposed the bogie truck from rolling stock during detection, and this kind equipment generally uses when the maintenance of rail vehicles warehouse-in.The online wheel also has application at home and abroad to dynamic measurement equipment, its main mode that scratch is surveyed is the mode that adopts vibration sensor to measure, because the size of vibratory force is relevant with the installation site of load-carrying and sensor with train running speed, this mode is difficult to quantitatively detect attrition fault, simultaneously also can't the failure judgement type.
Summary of the invention
Railway wheel tread scratch image dynamic detection device of the present invention provides a kind of safety detecting system that is installed on the railway line.This equipment can be used for the wheel of railway main track by vehicle to detect, wheel during the motor train unit warehouse-in to detect and wheel during the locomotive warehouse-in to detecting, with realize can the normal running train wheel tread of dynamic measurement faulty condition, comprise scratch, peel off, grind wheel faults such as heap, calculate the degree of depth area of scratch and other fault by the mode of image recognition, wheel is forecast safe condition, make the maintenance worker can in time handle the train wheel fault, guarantee the purpose of safe train operation.
Technical scheme of the present invention is in order to achieve the above object:
A kind of railway wheel tread scratch image dynamic detection device comprises
Camera box is surveyed in 12 cover scratches, and this scratch detection camera box is positioned at the two rails outer fix respectively, divides the front and rear wheel scratch to survey camera box and the left and right scratch detection camera box of taking turns; The front-wheel scratch is surveyed camera box over against direction to the car, and the two rails outside is respectively installed three scratches and surveyed camera box, and camera box is surveyed in totally six scratches; The trailing wheel scratch is surveyed camera box back to direction to the car, and the two rails outside is respectively installed three scratches and surveyed camera box, and camera box is surveyed in totally six scratches;
12 cover floor light light-source box, this floor light light-source box is positioned at the two rails outer fix respectively, divides front and back wheel floor light light-source box and left and right wheels floor light light-source box; Front-wheel floor light light-source box is over against direction to the car, and three floor light light-source box are respectively installed in the two rails outside; Trailing wheel floor light light-source box is back to direction to the car, and three floor light light-source box are respectively installed in the two rails outside;
One wheel alignment system; Image capturing system; Image acquisition and identification software; Control circuit; Industrial computer; Camera box is surveyed in this scratch, the floor light light-source box is connected with described industrial computer hardware with control circuit by cable respectively with wheel alignment system; This image capturing system is connected with described control circuit hardware, and this image acquisition and identification software are contained in this industrial computer memory device in advance.
This scratch is surveyed camera box and is comprised the casing that is closed, and pick up camera and mount pad, rotary magnet door-opening mechanism are arranged at this casing inside, and the installation jig is arranged at this casing outside and captives joint with rail.
The pick up camera that this scratch is surveyed in the camera box is as the criterion with camera optical axis and camera focus, apart from the rail inner distance is 200～500mm, be lower than rail plane 100～300mm, optical axis becomes 15～35 degree angles to face upward bat with the rail plane, adopt 8～16mm camera lens, shooting distance is 2800～2000mm scope.
This scratch is surveyed camera box and is distributed in the rail both sides, per three is one group, form left front, right front, left back, right back four groups along the rail direction, form every group and take a wheel, wheel tread before left front, the right front shooting bogie of car, wheel tread behind left back, the right back shooting bogie of car, every pick up camera is taken two width of cloth images, each wheel is taken the structure of six photos altogether, and every group of scratch surveyed and to be evenly distributed in the camera box and in twos at a distance of 700～1000mm.
This floor light light-source box is made up of illuminating lamp, door opening and closing mechanism, cabinet, and described illuminating lamp adopts halide torch or highlighted LED lamp; The corresponding scratch of each floor light light-source box is surveyed camera box and is arranged at this scratch and surveys camera box outside, rectangular distribution and 700～1000mm apart in twos in every group of floor light light-source box; The lighting source direction of illumination becomes 20～miter angle with camera optical axis, and the floor light light-source box is apart from rail 500～1200mm.
This wheel alignment system is made up of the three cover wheel signal transducers and the sensor signal acceptor circuit that are arranged at same one steel rail inboard; Described wheel signal sensor links to each other with described control circuit hardware by the sensor signal acceptor circuit respectively, this the first wheel signal sensor and the second wheel signal sensor are at a distance of 3050 meters, and this second wheel signal sensor and the 3rd wheel signal sensor are at a distance of 3 meters ± 1 meter; This second wheel signal sensor and scratch are surveyed camera box at a distance of 2660 millimeters ± 500 millimeters, simultaneously with apart 960 millimeters ± 300 millimeters of floor light light-source box; The 3rd wheel signal sensor and scratch are surveyed camera box at a distance of 2660 millimeters ± 500 millimeters, simultaneously with apart 960 millimeters ± 300 millimeters of floor light light-source box.
This image capturing system comprises four image acquisition industrial computers that image pick-up card is housed, every gather industrial computer corresponding respectively collect the same three cover scratches of taking turns bit image survey camera box and with it hardware connect, gather industrial computer for every and the image that collects is carried out the image recognition computing and export by control circuit.
Adopt technical scheme of the present invention and be installed in safety detecting system on the railway line because railway wheel tread scratch image dynamic detection device is a cover, this system surveys wheel that camera box took, took cruising by wheel alignment system location, scratch view data is handled by image capturing system and image acquisition and identification software.Adopt pick up camera to take the tread image by image recognition, calculate flat sliding, peel off situation such as piece, accurately measure the flat sliding degree of depth, can satisfy the survey precision requirement, wait the mode of other measurements with respect to vibration, because the size of vibratory force is relevant with the installation site of load-carrying and sensor with train running speed, this mode is difficult to quantitatively detect attrition fault, simultaneously also can't the failure judgement type.By the image measurement mode, can judge out of order type according to fault outer shape and feature, comprise scratch, peel off, grind heap etc., can realize the directly perceived and quantitative analysis of fault.Simultaneously, when the forecast fault, the maintainer can realize the artificial secondary affirmation of indoor fault by the order of accuarcy of fault graph as the intuitive judgment measurement, has improved accuracy of the forecast greatly, makes things convenient for the staff to judge and handling failure.Increase work efficiency.
Be positioned at the rail outside because the pick up camera installation site of camera box is surveyed in scratch, the branch front and back wheel surveys case and left and right wheels is surveyed case.Front-wheel is surveyed the case pick up camera over against direction to the car, and left and right sides is respectively installed three and surveyed case, is mutually 120 degree zones by the vehicle wheel opposite and takes respectively.Trailing wheel is surveyed the case pick up camera back to direction to the car, and left and right sides is respectively installed three and surveyed case, is mutually 120 degree zones by the vehicle wheel opposite and takes respectively.About survey case and adopt symmetrical structure.
This measurement mechanism is directly with the jig installation, and is as basis and punching in orbit, not easy for installation, and the survey precision height is low to the measurement environment requirement, can satisfy the high speed Testing requirement.
Railway wheel tread scratch image dynamic detection device has adopted the integrated industrial product design, and is convenient for installation and maintenance, has good interchangeability.Environment had good adaptive capacity.
Description of drawings
Fig. 1 is vehicle scratch detection principle scheme drawing of the present invention
Fig. 2 surveys rail edge equipment schematic layout pattern for vehicle scratch of the present invention
Fig. 3 surveys case inner structure scheme drawing for vehicle scratch of the present invention
Fig. 4 surveys scheme of installation on the case track for vehicle scratch of the present invention
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention being applied to the vehicle on-line measurement is described further.Other occasion such as locomotive and motor-car are measured and can be carried out with reference to present embodiment.
Railway wheel tread scratch image dynamic detection device comprises as shown in Figure 1, Figure 2, Figure 3 and Figure 4
12 cover scratch detection camera box, this scratch is surveyed camera box and is positioned at the two rails outer fix respectively, can divide the front and rear wheel scratch to survey camera box and the left and right scratch detection camera box of taking turns along the locomotive operation direction; Camera box 4,5,6 is surveyed in the brake drum of front wheel right hand and left hand scratch and the right scratch of front-wheel is surveyed camera box 7,8,9 over against direction to the car, about the two rails outside is divided three scratches is installed respectively and surveys camera box, and camera box is surveyed in totally six scratches; Camera box 10,11,12 is surveyed in the scratch of a trailing wheel left side and the right scratch of trailing wheel is surveyed camera box 13,14,15 back to direction to the car, about the two rails outside is divided three scratches is installed respectively and surveys camera box, and camera box is surveyed in totally six scratches;
12 cover floor light light-source box, this floor light light-source box is positioned at the two rails outer fix respectively, divides front and rear wheel floor light light-source box and the left and right floor light light-source box of taking turns; Brake drum of front wheel right hand and left hand floor light light- source box 16,17,18 and front-wheel right redundant lighting source case 19,20,21 are over against direction to the car, and three floor light light-source box are respectively installed in the two rails outside; Trailing wheel left redundant lighting source case 22,23,24 and trailing wheel right redundant lighting source case 25,26,27 are back to direction to the car, and three floor light light-source box are respectively installed in the two rails outside;
Camera box installations of staggering surveyed in this floor light light-source box and scratch, for front-wheel the floor light light-source box surveyed camera box with respect to scratch and is provided with backward, for trailing wheel the floor light light-source box is provided with forward with respect to scratch detection camera box.
One wheel alignment system; Image capturing system; Image acquisition and identification software; Control circuit; Industrial computer; Camera box is surveyed in this scratch, the floor light light-source box is connected with described industrial computer hardware with control circuit by cable respectively with wheel alignment system; This image capturing system is connected with described control circuit hardware, and this image acquisition and identification software are contained in this industrial computer memory device in advance.
This scratch is surveyed camera box and is comprised the casing 32 that is closed, and pick up camera and mount pad 30, rotary magnet door-opening mechanism 31 are arranged at this casing 32 inside, install jig 33 be arranged at this casing 32 outside and with rail 29 use jigs directly and rail fix.
Switch door motor and door opening and closing mechanism are installed in the cabinet, pick up camera and mount pad 30 mount pads bottom mounting shock absorber, pick up camera and mount pad 30 heads are installed protect glass.The switch door motor drives door opening and closing mechanism, and open automatically at the back door when sending a car.The switch door motor can be selected stepping motor or corner motor for use, in switch door position a limit switch is installed respectively.
The pick up camera that this scratch is surveyed in the camera box is as the criterion with camera optical axis and camera focus, apart from the rail inner distance is 200～500mm, be lower than rail plane 100～300mm, optical axis becomes 15～35 degree angles to face upward bat with the rail plane, adopt 8～16mm camera lens, shooting distance is 2800～2000mm scope.
This scratch is surveyed camera box and is distributed in the rail both sides, per three is one group, form left front, right front, left back, right back four groups along the rail direction, take a wheel for every group, wheel tread before left front, the right front shooting bogie of car, wheel tread behind left back, the right back shooting bogie of car, every pick up camera is taken two width of cloth images, each wheel is taken six photos altogether, and every group of scratch surveyed and to be evenly distributed in the camera box and in twos at a distance of 700～1000mm.That is to say that it is one group (such as left front group) that camera box 4,5,6 is surveyed in scratch, apart is 700～1000mm each other, and the best is 880 millimeters; It is one group (such as right front group) that camera box 7,8,9 is surveyed in scratch, apart is 700～1000mm each other, and the best is 880 millimeters; It is one group (such as left back group) that camera box 10,11,12 is surveyed in scratch, apart is 700～1000mm each other, and the best is 880 millimeters; It is one group (such as right back group) that camera box 13,14,15 is surveyed in scratch, apart is 700～1000mm each other, and the best is 880 millimeters;
This floor light light- source box 16,17,18,19,20,21,22,23,24,25,26,27 is made up of illuminating lamp, door opening and closing mechanism, cabinet, and described illuminating lamp adopts halide torch or highlighted LED lamp; The corresponding scratch of each floor light light-source box is surveyed camera box and is arranged at this scratch and surveys camera box outside, rectangular distribution and 700～1000mm apart in twos in every group of floor light light-source box; The lighting source direction of illumination becomes 20～miter angle with camera optical axis, and the floor light light-source box is apart from rail 500～1200mm.In fact the floor light light-source box is because survey the corresponding setting of camera box with scratch, so per three also are one group, can form left front, right front, left back, right back four groups along the rail direction, every group supplies to take a wheel illumination, the pick up camera illumination in each corresponding scratch detection camera box; Be evenly distributed in every group of floor light light-source box and in twos at a distance of 500～1200mm.That is to say that floor light light- source box 16,17,18 is one group (such as left front group), apart is 500～1200mm each other, and the best is 880 millimeters; Floor light light- source box 19,20,21 is one group (such as right front group), apart is 500～1200mm each other, and the best is 880 millimeters; Floor light light- source box 22,23,24 is one group (such as left back group), apart is 500～1200mm each other, and the best is 880 millimeters; Floor light light- source box 25,26,27 is one group (such as right back group), apart is 500～1200mm each other, and the best is 880 millimeters; (shown in Figure 2).
This wheel alignment system is made up of the wheel signal sensor that contains a sensor at least 1,2,3 and the sensor signal acceptor circuit that are arranged at same one steel rail inboard; Described wheel signal sensor links to each other with described control circuit hardware by the sensor signal acceptor circuit respectively, this wheel signal sensor 1 and apart 30～50 meters of wheel signal sensors 2, this wheel signal sensor 2 and apart 3 meters ± 1 meter of wheel signal sensor 3; This wheel signal sensor 2 and scratch are surveyed camera box 10 and 13 at a distance of 2660 millimeters ± 100 millimeters, simultaneously with 960 millimeters ± 100 millimeters of floor light light- source box 22 and 25 apart; This wheel signal sensor 3 and scratch are surveyed camera box 4 and 7 at a distance of 2660 millimeters ± 100 millimeters, simultaneously with 960 millimeters ± 100 millimeters of floor light light- source box 16 and 19 apart.
This image capturing system comprises four image acquisition industrial computers that image pick-up card is housed, every gather industrial computer corresponding respectively collect the same three cover scratches of taking turns bit image survey camera box and with it hardware connect, gather industrial computer for every and the image that collects is carried out the image recognition computing and export by control circuit.
Be adapted at anterior the shooting according to present China roller bearing adapter stabilizer bar situation front-wheel, trailing wheel is adapted at the rear portion track up.Because circumference of the wheel is 840mm * 3.14=2637mm, arranges three pick up cameras successively in train working direction one side, every pick up camera is taken two pictures continuously and is taken wheel altogether to 1/3 tread, as shown in Figure 1.
Fig. 2 is that rail edge equipment schematic layout pattern is surveyed in the vehicle scratch, abrades detection camera box installation site and is positioned at the rail outside, divides front and back wheel to survey case and left and right wheels detection case.Front-wheel is surveyed the case pick up camera over against direction to the car, and left and right sides is respectively installed three and surveyed case, surveys case for totally six, is followed successively by left front detection case 4,5,6 along the train working direction; Right front detection case 7,8,9.Trailing wheel is surveyed the case pick up camera back to direction to the car, and left and right sides is respectively installed three and surveyed case, surveys case for totally six, is followed successively by left back detection case 10,11,12 along the train working direction; Right back detection case 13,14,15.About survey case and adopt symmetrical structure.
Pick up camera 30 is installed in the camera box 32, and cabinet is airtight, and dustproof and waterproof glass is installed at the camera lens place, drives the open and close door gear by motor 31 simultaneously, opens when taking, and closes after shooting is finished, as Fig. 3.
The pick up camera 30 that scratch is surveyed in the camera box is as the criterion with camera optical axis and camera focus, apart from the rail inner distance is 400mm, is lower than rail plane 150mm, and optical axis becomes 25 degree angles to face upward bat with the rail plane, adopt the 12mm camera lens, the shooting distance of two pictures is 2660mm and 2440mm.Left front, right front, left back, right back per three camera box are taken a wheel, wheel tread before left front, the right front shooting bogie of car, wheel tread behind left back, the right back shooting bogie of car, every camera is taken two images, each wheel is taken six photos altogether, and each videotapes cabinet at a distance of 880mm.
Scratch is surveyed camera box and is installed as shown in Figure 4, and 33 are the installation jig,
As shown in Figure 2, at every camera position, arrange the floor light lamp box.The floor light light-source box is made up of illuminating lamp, door opening and closing mechanism, cabinet etc., and light adopts common halide torch or high-brightness LED lamp.Floor light light- source box 16,17,18,19,20,21,22,23,24,25,26,27 location layouts as shown in Figure 2.
Image acquisition adopts the mode that image pick-up card is set in the industrial computer, and an industrial computer can be installed three image pick-up cards simultaneously, gathers three camera reviews respectively.
Camera lens adopts 12mm fixed focal length, iris setting camera lens.
Camera CCD size 4.8 * 6.5mm, sampling frequency 〉=60 frame/seconds, shutter speed 〉=1/10000, data line 1394 adopts external trigger mode images acquired, image resolution ratio 〉=656 * 491.
Wheel alignment system comprises three cover wheel 1,2,3 (every cover wheel signal transducer contains a sensor at least) of signal transducer and sensor signal acceptor circuit, industrial computer and pick up camera shooting external trigger signal circuit etc., No. 12 sensors are used for judging sends a car, No. 22 sensors are used for to the trailing wheel Camera Positioning, and No. 3 two sensors are used for to the front-wheel Camera Positioning.
Sensor links to each other with control circuit, by the pick-up transducers signal, calculate wheel position, send pick up camera by the control industrial computer and take the external trigger signal, transmit (time), a position, position of wheel and the cis-position signal of this images acquired to the image acquisition industrial computer by serial ports, send the external trigger order by the I/O card simultaneously, after the image acquisition industrial computer receives orders, the beginning images acquired.The image acquisition industrial computer is at first gathered the S1 image, gathers S2, S3 image afterwards more successively.Can satisfy the image acquisition requirement of the speed of a motor vehicle of 120km/h according to the selected parameter of existing pick up camera, realize high speed acquisition.
The present invention a kind ofly can survey flat sliding, peels off, falls situation such as piece, accurately measures the vehicle scratch of the flat sliding degree of depth and surveys case.It can be with normal operational vehicle wheel tread scratch parameter, and by digital camera, sensor is fixed and mounting box, and the vehicle wheel that shutter switching mechanism and protective device etc. are formed is to dynamic detection system.Through Computer Analysis, vehicle wheel is forecast safe condition.
Claims (7)
1. a railway wheel tread scratch image dynamic detection device is characterized in that: comprise
Camera box is surveyed in 12 cover scratches, and this scratch detection camera box is positioned at the two rails outer fix respectively, divides the front and rear wheel scratch to survey camera box and the left and right scratch detection camera box of taking turns; Camera box (4) is surveyed in the front-wheel scratch, and (5), (6) and (7), (8), (9) are over against direction to the car, and the two rails outside is respectively installed three scratches and surveyed camera box, and camera box is surveyed in totally six scratches; Camera box (10) is surveyed in the trailing wheel scratch, and (11), (12) and (13), (14), (15) are back to direction to the car, and the two rails outside is respectively installed three scratches and surveyed camera box, and camera box is surveyed in totally six scratches;
12 cover floor light light-source box, this floor light light-source box is positioned at the two rails outer fix respectively, divides front and back wheel floor light light-source box and left and right wheels floor light light-source box; Front-wheel floor light light-source box (16), (17), (18) and (19), (20), (21) are over against direction to the car, and three floor light light-source box are respectively installed in the two rails outside; Trailing wheel floor light light-source box (22), (23), (24) and (25), (26), (27) are back to direction to the car, and three floor light light-source box are respectively installed in the two rails outside;
One wheel alignment system; Image capturing system; Image acquisition and identification software; Control circuit; Industrial computer; Camera box is surveyed in this scratch, the floor light light-source box is connected with described industrial computer hardware with control circuit by cable respectively with wheel alignment system; This image capturing system is connected with described control circuit hardware, and this image acquisition and identification software are contained in this industrial computer memory device in advance.
2. railway wheel tread scratch image dynamic detection device as claimed in claim 1, it is characterized in that this scratch detection camera box comprises the casing (32) that is closed, pick up camera and mount pad (30), rotary magnet door-opening mechanism (31) are arranged at this casing (32) inside, and installation jig (33) is arranged at this casing (32) outside and captives joint with rail (29).
3. railway wheel tread scratch image dynamic detection device as claimed in claim 2, it is characterized in that the pick up camera that this scratch is surveyed in the camera box is as the criterion with camera optical axis and camera focus, apart from the rail inner distance is 200～500mm, be lower than rail plane 100～300mm, optical axis becomes 15～35 degree angles to face upward bat with the rail plane, adopt 8～16mm camera lens, shooting distance is 2800～2000mm scope.
4. railway wheel tread scratch image dynamic detection device as claimed in claim 1, it is characterized in that this scratch detection camera box is distributed in the rail both sides, per three is one group, form left front along the rail direction, right front, left back, right back four groups, form every group and take a wheel, left front, wheel tread before the right front shooting bogie of car, left back, wheel tread behind the right back shooting bogie of car, every pick up camera is taken two width of cloth images, each wheel is taken the structure of six photos altogether, and every group of scratch surveyed and to be evenly distributed in the camera box and in twos at a distance of 700～1000mm.
5. railway wheel tread scratch image dynamic detection device as claimed in claim 1, it is characterized in that this floor light light-source box (16), (17), (18), (19), (20), (21), (22), (23), (24), (25), (26), (27) are made up of illuminating lamp, door opening and closing mechanism, cabinet, described illuminating lamp adopts halide torch or highlighted LED lamp; The corresponding scratch of each floor light light-source box is surveyed camera box and is arranged at this scratch and surveys camera box outside, rectangular distribution and 700～1000mm apart in twos in every group of floor light light-source box; The lighting source direction of illumination becomes 20～miter angle with camera optical axis, and the floor light light-source box is apart from rail 500～1200mm.
6. railway wheel tread scratch image dynamic detection device as claimed in claim 1 is characterized in that this wheel alignment system is made up of the wheel signal sensor (1), (2), (3) and the sensor signal acceptor circuit that are arranged at same one steel rail inboard; Described wheel signal sensor links to each other with described control circuit hardware by the sensor signal acceptor circuit respectively, this wheel signal sensor (1) and wheel signal sensor (2) are at a distance of 30-50 rice, and this wheel signal sensor (2) and wheel signal sensor (3) are at a distance of 3 meters ± 1 meter; This wheel signal sensor (2) and scratch are surveyed camera box (10) and (13) at a distance of 2660 millimeters ± 100 millimeters, simultaneously with floor light light-source box (22) and (25) apart 960 millimeters ± 100 millimeters; This wheel signal sensor (3) and scratch are surveyed camera box (4) and (7) at a distance of 2660 millimeters ± 100 millimeters, simultaneously with floor light light-source box (16) and (19) apart 960 millimeters ± 100 millimeters.
7. railway wheel tread scratch image dynamic detection device as claimed in claim 1, it is characterized in that this image capturing system comprises four image acquisition industrial computers that image pick-up card is housed, every gather industrial computer corresponding respectively collect the same three cover scratches of taking turns bit image survey camera box and with it hardware connect, gather industrial computer for every and the image that collects is carried out the image recognition computing and export by control circuit.
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