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Volume 37 Issue 1
Apr.  2013
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Citation:
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Research of laser detector for railway locomotive gauge and its field calibration technology

  • 1.

    State Key Laboratory of Precision Measuring Technology & Instruments, Tianjin University, Tianjin 300072, China;

  • 2.

    Locomotive and Vehicle Test Station, Products Quality Supervision and Test Center, Ministry of Railways, Beijing 100015, China

  • Corresponding author: LIU Chang-jie, liuchangjie@tju.edu.cn ; 
  • Received Date: 2012-05-14
    Accepted Date: 2012-06-11
  • In order to achieve the railway locomotive gauge measurement with high efficiency and high precision,a scanning laser-based gauge detector was designed.The cross-section scanning measurement was realized by fixing ranging sensors around the support frame.The field high-precision calibration method was focused.The system parameter was calibrated with the self-designed calibration card and the laser tracker.The system parameters,combined with the ranging sensor measurements,were used to calculate the 3-D coordinates of all the measured points in the rail coordinate system,and then the distance between the cross-sectional profile and the standard gauge was calculated so that the clearance was measured.Field experiments show that the system is in high efficiency and the system measurement accuracy of 0.5mm meets the need of bound detection.
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通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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Research of laser detector for railway locomotive gauge and its field calibration technology

    Corresponding author: LIU Chang-jie, liuchangjie@tju.edu.cn; 
  • 1. State Key Laboratory of Precision Measuring Technology & Instruments, Tianjin University, Tianjin 300072, China;
  • 2. Locomotive and Vehicle Test Station, Products Quality Supervision and Test Center, Ministry of Railways, Beijing 100015, China
  • Received Date: 2012-05-14
  • Accepted Date: 2012-06-11
  • Available Online: 2013-01-25

Abstract: In order to achieve the railway locomotive gauge measurement with high efficiency and high precision,a scanning laser-based gauge detector was designed.The cross-section scanning measurement was realized by fixing ranging sensors around the support frame.The field high-precision calibration method was focused.The system parameter was calibrated with the self-designed calibration card and the laser tracker.The system parameters,combined with the ranging sensor measurements,were used to calculate the 3-D coordinates of all the measured points in the rail coordinate system,and then the distance between the cross-sectional profile and the standard gauge was calculated so that the clearance was measured.Field experiments show that the system is in high efficiency and the system measurement accuracy of 0.5mm meets the need of bound detection.

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