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Rail Flatness and Verticality Measurement System Based on Ruler Model

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Currently,the manual contact rail measurement that was basically adopted in China has low detection efficiency,poor accuracy and poor stability.In order to improve the function of the system,we propose a non-contact measurement method based on the flatness and verticality ruler model.The flatness measurement model was built by employing the string measurement method.In addition,the verticality measurement model was built by the dihe-dral method to measure the rail comprehensively.By extracting curvature information of feature points,in this system,each laser sensor is used to collect rail profile curves.A large number of three-dimensional point clouds data are generated by the unit qua-ternion method of coordinate transformation,and the contour curves of the characteristic points of the four laser sensors are matched with the corresponding point sets one to one,and the rail contour splicing is finally completed.The experimental results show that this method has better measurement effect compared with the traditional manual measurement method.

laser profilerpoint cloud splicingverticality measurementflatness measurementrail quality evaluationruler modelnon-contact

YANG Haima、ZOU Xinglin、ZHOU Zhendong、ZHANG Dawei、YANG Yutuan、LI Jun、QIAN Longping、JIANG Shenghua

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School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China

Shanghai Ruinu Machinery Crop,Shanghai 200120,China

Supported by the National Natural Science Foundation of ChinaShanghai Natural Science FoundationBaoshan Science and Technology Innovation Special Fund

U183113317ZR144350017-C-21

2020

10.19823/j.cnki.1007-1202.2020.0069

武汉大学自然科学学报(英文版)
武汉大学

武汉大学自然科学学报(英文版)

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影响因子：0.066
ISSN：1007-1202
年,卷(期)：2020.25(6)
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