Train wheel tread detection system and detection method based on displacement sensors

Abstract

The invention discloses a train wheel tread detection system and method based on displacement sensors. The system comprises the displacement sensor and a processor. The displacement sensors are arranged on the two sides of a track, are connected with the processor and are used for collecting displacement signals of wheel treads when wheels pass by and transmitting the displacement signals to the processor; and the processor is used for judging whether the wheel tread is abnormal or not according to the displacement signal. The displacement sensors are used for detecting the displacement signals of the wheel treads when the wheels are pressed, the tread defect problem can be accurately and efficiently found, the system is hardly influenced by the external environment, and the method is simple, reliable and suitable for large-scale application and popularization.

Description

technical field [0001] The invention relates to the technical field of wheel tread detection, in particular to a displacement sensor-based train wheel tread detection system and detection method. Background technique [0002] The part of the train wheel in contact with the track is called the tread. The tread bears the force brought by the train's own weight and various unknown impacts, and is the key stress-bearing part of the train operation. [0003] As we all know, with the long-term operation of the train, the tread will inevitably be damaged due to metal fatigue, wear, impact and other reasons. The damaged tread is a safety hazard that cannot be underestimated, and will affect the operation of the train to varying degrees. For example, serious tread damage will lead to serious distortion of the wheel-rail contact relationship, which will lead to major traffic safety accidents such as train derailment, and slight tread damage will cause uneven wheel-rail contact surface...

AI Technical Summary

Problems solved by technology

[0003] As we all know, with the long-term operation of the train, the tread will inevitably be damaged due to metal fatigue, wear, impact and other reasons, and the damaged tread is a safety hazard that cannot be underestimated, and will affect the operation of the train to varying degrees

For example, serious tread damage will lead to serious distortion of the wheel-rail contact relationship, which will lead to major traffic safety accidents such as train derailment, and slight tread damage will cause uneven wheel-rail contact surface. When the speed of the high-speed train is high, this uneven The leveling is enlarged, resulting in bumps and swings, which seriously affect the comfort of train operation

[0004] At present, the method of detecting train treads is mainly non-contact. Specifically, multi-cameras are used to collect images of the wheel treads in sections. Ran Jia analyzes the defects of the treads visually. Although this method has the advantage of flexible algorithms, it is less affected by light. Large, and it is easy to misjudge the black impurities on the tread as defects

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