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Abstract: A novel method for detecting the flats and the peeling of
tread surface of the railway wheelsets is presented. A digital matrix
reflecting the tread surface of wheelsets is established based on the
laser sensors. The technique of the Marr edge detection, two dimension
bilinear interpolation and the data modification according to the tread
surface profile analysis are applied so that the flat depth and the
peeling length can be detected quickly while the wheelsets are rotating.
Accurately the status of the tread surface can be obtained and the
failure can be diagnosed in time. The software is programmed by using
the VC++ and the Matlab languages, which include the functions such as
processing of the matrix for tread surface, detection of the flats and
peeling, and the display of two or three dimension images of detection
results. This proposed technique for detecting the flats and the peeling
of the tread surface is applied actually in industry and is proven to be
practical and efficient.
Key words: Tread surface of wheelsets Flats Peeling Detection
Laser sensing
CLC No: U260.331
广东省科技攻关、广州市科技攻关及“千百十”人才基金资助项目.
Received 20020429, received in revised form 20030430
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