摘要
针对传统轨距检测方法设备复杂、安装要求高和数据计算量大的问题,设计了一种基于轮轨相对横移的轨距检测系统。该系统首先使用两组激光源与相机组合分别采集左右两边轨头内侧激光光斑图像,然后根据钢轨边缘特点使用Hough检测与透视变换将其矫正为同一采集距离正视视角图像,接着对比基准时刻图像计算激光光斑中心点垂向位移变化量并通过其与轮对横向相对位移的几何关系分别计算两侧轮轨相对横移变化量,最后由两者差值得到相对初始时刻轨距变化量实现轨距的间接检测。实验结果表明,该轨距检测方法硬件结构简单,数据计算量小且检测精度较高,可实现轨距参数的非接触式检测。
Aiming at the complexity of the traditional gauge detection method,high requirements for the installation and large amount of data analysis,a gauge measurement method based on the relative transverse movement of wheel and rail is designed in this paper.Two sets of laser source and camera combinations are used to dynamically collect the image of the inner straight line part of the rail head in the method.According to the rail parameters,the Hough detection and perspective transformation are used to rectify the image from the same acquisition distance.Compared to datum moment,the variation of vertical displacement of the center point of the laser is computed.And through the geometrical relation of the variation previously described and the lateral relative displacements of the two wheels,the relative transverse displacement of the two wheels is calculated.The relative initial time gauge change is gained by the difference,which realizes the indirect measurement of the track gauge.The experimental results show that the method has the characteristics of simple hardware structure,small data calculation,high measurement precision,and can realize non-contact dynamic measurement of gauge parameters.
作者
张光跃
马增强
苑佳靖
康德
闫德立
李俊峰
Zhang Guangyue;Ma Zengqiang;Yuan Jiajing;Kang De;Yan Deli;Li Junfeng(School of Electrical and Electronics Engineering,Shijiazhuang Tiedao University,Shijiazhuang,Hebei 050043,China;School of Mechanical and Electric Engineering,Handan University,Handan,Hebei 056000,China)
出处
《光电工程》
CAS
CSCD
北大核心
2020年第2期44-51,共8页
Opto-Electronic Engineering
基金
国家自然科学基金项目(11372199)
河北省自然科学基金项目(E2016210104)
河北省“三三三人才工程”培养经费项目(A201802004)~~
关键词
轨距检测
光斑垂向位移
轮轨相对横移
透视矫正
间接检测
gauge measurement
vertical displacement of spot
wheel-rail lateral relative displacement
perspective correction
indirect measurement
作者简介
张光跃(1995-),男,硕士研究生,主要从事图形图像处理的研究。E-mail:916601504@qq.com;通信作者:马增强(1975-),男,博士,教授,博士生导师,主要从事图形图像处理的研究。E-mail:mzqlunwen@126.com。
