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23 February 2006 Theoretical research on the measuring method of the running wheel set tread defects based on optoelectronic technique
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Abstract
Wheel set tread is a part of wheel that contacts with rail. Wheel set tread defects include scotching and flaking on wheel tread. The paper presents an on-rail measurement method to detect running wheel set defects based on optoelectronic technique. In the method, grid-trace is projected on the wheel tread. High speed CCD cameras are used to acquire the tread profile image. Digital image process technique is used to process the data. The measuring device is installed along the straight railway section. When the vehicle is running in a limited speed, the devices placed on both sides of the railway can get depths, lengths and positions of possibly existed wheel defects. The scotching longer than 17mm, flaking longer than ±2mm can be detected with an error of theoretically.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kuang Yan, Kaihua Wu, Ruirong Wang, and Peng Jiang "Theoretical research on the measuring method of the running wheel set tread defects based on optoelectronic technique", Proc. SPIE 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 61502W (23 February 2006); https://doi.org/10.1117/12.678559
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