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Proceedings Paper

Wheel profile dynamic inspection system based on slit diode laser
Author(s): Yu Zhang; Jianping Peng; Xiaorong Gao; Zeyong Wang; Quanke Zhao; Chaoyong Peng; Kai Yang
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Paper Abstract

Flange Height and Flange Thickness are vital parameters for train wheels. Usually, they are manually measured by wheel vernier after train stopped. This article introduces a dynamic wheel inspection system. Pulsed slit diode lasers project onto wheel tread while train is in motion, CCD cameras record light-section images of wheel profile. Geometric parameters and profile of wheel are measured on basis of image processing. This paper introduces measuring principle and structure of this inspection system, analyzes influences resulted from laser parameters and environment, designs instantaneous high-powered slit diode laser and narrowband optical filter according to ±0.2mm accuracy requirement and environment situation.

Paper Details

Date Published: 23 February 2009
PDF: 7 pages
Proc. SPIE 7198, High-Power Diode Laser Technology and Applications VII, 71981O (23 February 2009); doi: 10.1117/12.808438
Show Author Affiliations
Yu Zhang, Southwest Jiaotong Univ. (China)
Jianping Peng, Southwest Jiaotong Univ. (China)
Xiaorong Gao, Southwest Jiaotong Univ. (China)
Zeyong Wang, Southwest Jiaotong Univ. (China)
Quanke Zhao, Southwest Jiaotong Univ. (China)
Chaoyong Peng, Southwest Jiaotong Univ. (China)
Kai Yang, Southwest Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 7198:
High-Power Diode Laser Technology and Applications VII
Mark S. Zediker, Editor(s)

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