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基于激光源的机车轮轨相对横移图像检测

  

  1. 石家庄铁道大学电气与电子工程学院,河北 石家庄 050043
  • 出版日期:2017-08-31 发布日期:2017-08-10
  • 基金资助:
    国家自然科学基金项目(11372199,11572206,11227201);河北省自然科学基金项目(A2014210142)

The Image Detection of Wheel-Rail Relative Lateral Displacement Based on Laser

  1. School of Electrical and Electronics Engineering, Shijiazhuang Tiedao University, Shijiazhuang Hebei 050043, China
  • Online:2017-08-31 Published:2017-08-10

摘要: 机车轮轨接触点位置的变化能够直观地反映出轮轨的接触状态。针对当前摄像机
检测方法难以全面拍摄到轮轨接触点位置的缺点,设计了一种基于激光源的机车轮轨相对横移
图像检测方法。该方法采用摄像机与激光源相组合的方案,把摄像机与激光源分别安装在转向
架上且与地面保持一定的角度,巧妙地将轮轨相对横移测量转换为激光源在轨道内侧表面光斑
中心点位置的提取。实验结果表明,该方法实现了轮轨相对横移数据实时采集和存储,对高速
机车稳定性和安全性研究具有重要的实际意义。

关键词: 轮轨接触点, 轮轨相对横移, 激光光斑中心, 激光源

Abstract: The position change of wheel rail contact point can directly reflect the wheel-rail contact.
Aiming at the disadvantages of current camera monitoring method which is difficult to fully capture
the position of the wheel rail contact point, a kind of wheel relative sliding image detection system is
designed based on laser source. The system combines a camera with a laser source. The camera and
laser source which keep a certain angle to the ground are installed on the bogie to convert wheel
relative sliding into the inside rail surface laser spot extraction. The experimental results show that the
system can real-time display and store the data of wheel relative sliding. And it has very important
significance to the study of high speed locomotive stability and safety.

Key words: wheel-rail contact point, wheel-rail lateral relative displacement, laser spot center, laser
source