Bulletin of Surveying and Mapping ›› 2021, Vol. 0 ›› Issue (8): 88-92.doi: 10.13474/j.cnki.11-2246.2021.0247

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Research and application of automatic detection of rail fastener damage

HOU Haiqian1,2, TANG Chao1,2, ZHAO Lifeng1,2, ZHANG Hao3   

  1. 1. Beijing Urban Construction Exploration & Surveying Design Research Institute Co., Ltd., Beijing 100101, China;
    2. Beijing Key Laboratory of Deep Foundation Pit Geotechnical Engineering of Rail Transit, Beijing 100101, China;
    3. Beijing Luqiao Ruitong Maintenance Center Co., Ltd., Beijing 101300, China
  • Received:2021-06-07 Revised:2021-06-24 Online:2021-08-25 Published:2021-08-30

Abstract: The traditional fastener inspection basically adopts manual inspection method, which not only has the disadvantages of low work efficiency and high labor intensity, but also has the disadvantages of many human factors interference and low inspection sampling rate. To solve these problems, this paper proposes a method for detecting damage and loosening of rail fasteners based on a line structure light sensor, and develops an intelligent monitoring system for rail fasteners to realize detecting damage automatically. Finally, the research results are applied to the detection of rail fasteners in a subway section of Xuzhou city, and the method is verified with feasibility and accuracy, which provides a new method for the inspection of subway track fasteners.

Key words: rail, automatic detection, structured light sensor, fastener damage, decision tree, zone growing method

CLC Number: