Wheel tread damage detection method based on an urban rail vehicle wheel tread damage detection system

A wheel tread and damage detection technology, which is applied in the direction of rim measurement/measurement, can solve the problems of low definition and many errors in damage identification, improve detection accuracy, and realize the effect of online real-time detection without parking

Active Publication Date: 2021-07-16
HARBIN KEJIA GENERAL MECHANICAL & ELECTRICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a wheel tread damage detection system and method for urban rail vehicles in order to overcome the problem that the wheel tread panorama images obtained by the existing wheel tread damage detection system often have low definition and cause more errors in damage identification

Method used

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  • Wheel tread damage detection method based on an urban rail vehicle wheel tread damage detection system
  • Wheel tread damage detection method based on an urban rail vehicle wheel tread damage detection system
  • Wheel tread damage detection method based on an urban rail vehicle wheel tread damage detection system

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specific Embodiment approach 1

[0028] Specific embodiment one, a kind of urban rail vehicle wheel tread damage detection system of the present invention of the present embodiment, comprises wheel sensor 1, control module 2, image acquisition control and processing module 3 and camera module 4;

[0029] The wheel sensor 1 is electrically connected to the control module 2, and is used to generate a shooting trigger signal and send it to the control module 2 when the wheel passes by;

[0030] The control module 2 is electrically connected to the image acquisition control and processing module 3, and is used to generate a shooting command according to the shooting trigger signal and send it to the image acquisition control and processing module 3;

[0031] The image acquisition control and processing module 3 is electrically connected to the camera module 4, and is used to send shooting commands to the camera module 4;

[0032] The camera module 4 is used to collect a partial image of the wheel tread after rece...

specific Embodiment approach 2

[0079] Specific embodiment two, in this embodiment, based on the wheel tread damage detection method of the above-mentioned a kind of urban rail vehicle wheel tread damage detection system, the specific steps are as follows:

[0080] Step 1, image collection: each front wheel tread image capture camera 4-1-1 and rear wheel tread image capture camera 4-2-1 all photographed to obtain 1 / 4 wheel tread and 1 / 8 wheel tread, 4 wheels on the same side One front wheel tread image capturing camera 4-1-1 and four rear wheel tread image capturing cameras 4-2-1 send the wheel tread part images of each wheel to the image acquisition control and processing module 3;

[0081] Step 2. Image preprocessing: determine the salient area of ​​the image of the wheel tread, cut and correct 1 / 4 of the wheel tread to obtain a rectangular 1 / 4 wheel tread, and use the image projection method to use 1 / 8 of the wheel tread Complete the extraction of the precise area of ​​1 / 4 wheel tread;

[0082] Step 3. P...

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Abstract

The wheel tread damage detection system and method of an urban rail vehicle of the present invention relate to a train fault detection system and method, the purpose of which is to overcome the low definition of the wheel tread panorama image obtained by the existing wheel tread damage detection system, which may cause damage For problems with many errors during identification, the system includes: wheel sensors, which are used to generate shooting trigger signals when the wheels pass by; control modules, which are used to generate shooting commands according to the shooting trigger signals; Send to the camera module; the camera module is used to collect a partial image of the wheel tread after receiving the shooting command, and collect multiple partial images of the wheel tread for the same wheel; and send the partial image of the wheel tread to the image acquisition control and processing module; The image acquisition control and processing module is also used for splicing multiple partial wheel tread images of the same wheel into a complete wheel tread after receiving the partial image of the wheel tread.

Description

technical field [0001] The invention relates to a train fault detection system and method, in particular to a system and method for damage identification by splicing complete images of wheel treads. Background technique [0002] Wheel tread damage is a common failure of the wheel tread in rail vehicles, and it is the result of wheels sliding on the rail surface caused by excessive braking force during vehicle operation. The plane caused by the abrasion will cause a severe impact between the wheel and the rail, and the impact will seriously damage the bearing system of the vehicle and the roadbed. This impact is a very dangerous defect that seriously threatens the safety of driving. [0003] Especially after the speed of the train is increased, the requirements for the accuracy of the shape and geometric dimensions of the wheels are higher. During emergency braking, the collision and relative sliding between the wheel set and the rail will cause the tread to be scratched or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61K9/12
CPCB61K9/12
Inventor 杨德凯
Owner HARBIN KEJIA GENERAL MECHANICAL & ELECTRICAL CO LTD
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