Online measurement for geometrical parameters based on 2D laser sensor

Hongtao He; Shuangyun Shao; Qibo Feng

doi:10.1117/12.2083907

6 March 2015 Online measurement for geometrical parameters based on 2D laser sensor

Hongtao He, Shuangyun Shao, Qibo Feng

Proceedings Volume 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation; 944609 (2015) https://doi.org/10.1117/12.2083907
Event: International Symposium on Precision Engineering Measurement and Instrumentation, 2014, Changsha/Zhangjiajie, China

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.

Citation Download Citation

Hongtao He, Shuangyun Shao, and Qibo Feng "Online measurement for geometrical parameters based on 2D laser sensor", Proc. SPIE 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation, 944609 (6 March 2015); https://doi.org/10.1117/12.2083907

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