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Proceedings Paper

Online measurement for geometrical parameters based on 2D laser sensor
Author(s): Hongtao He; Shuangyun Shao; Qibo Feng
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Paper Abstract

Based on 2-D laser sensor, an optimized system for dynamically measuring geomet rical parameters of train wheels is proposed in this paper. The calibrat ion of the system is simplified by combining a 1-D laser sensor and a 2-D laser sensor. Accuracy of the 2-D laser sensor reaches 0.2mm and it ensures that most information of the wheel tread surface is acquired. The geometrical parameters including wheel diameter, flange thickness, flange height, tread wear and rim width can be calculated once the information is processed. In order to improve the measurement accuracy of wheel diameter, a new method for spatial circle fitting is proposed. According to the results acquired in the field, the measurement system can satisfy the requirements of dynamically measuring the geometrical parameters of train wheels.

Paper Details

Date Published: 6 March 2015
PDF: 5 pages
Proc. SPIE 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation, 944609 (6 March 2015); doi: 10.1117/12.2083907
Show Author Affiliations
Hongtao He, Beijing Jiaotong Univ. (China)
Shuangyun Shao, Beijing Jiaotong Univ. (China)
Qibo Feng, Beijing Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 9446:
Ninth International Symposium on Precision Engineering Measurement and Instrumentation
Junning Cui; Jiubin Tan; Xianfang Wen, Editor(s)

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