基于线结构光传感器的轨道板几何形貌检测方法  

A detection method based on line-structured light sensor for geometrical morphology of track slab

作　　者：祝祥 邵双运[1] 宋志军 ZHU Xiang;SHAO Shuang-yun;SONG Zhi-jun(School of Science,Beijing Jiaotong university,Beijing 100044,China)

机构地区：[1]北京交通大学理学院光电检测所,北京100044

出　　处：《中国光学》2018年第5期841-850,共10页Chinese Optics

基　　金：科技部国家重点研发计划(No.2017YFC0805406)~~

摘　　要：轨道板的外形尺寸精度对于保证高速铁路轨道质量起着至关重要的作用,针对现有轨道板检测方法存在的问题,本文建立了一种基于线结构光传感器的轨道板测量系统并提出了基于轨道板点云数据的几何参数测量方法。线结构光传感器按照固定间隔扫描CRTS III型轨道板,获得点云数据;利用轨道板中特殊位置点云数据对整个点云数据进行位置和姿态的校正;最后根据特征参数定义,实现轨道板四项关键几何参数的快速非接触测量。实验结果表明,本文提出的测量方法测量精度可达0.2 mm。The dimensional accuracy of track slab plays an important role in ensuring the quality of the high-speed railway track.Aiming at the problems existing in the pressent track slam detection methods,we establish a track slam measurement system based on line-structured light sensor and propose a geometric parameter measurement method based on track slam point cloud data.The line-structured laser sensor scans the CRTSⅢtype track slab at regular intervals to obtain point cloud data.The position and attitude of the entire point cloud data are corrected by using the point cloud data at a special position in the track slam.Finally,according to the definition of the characteristic parameters,the rapid non-contact measurement of four key geometric parameters of track slab is realized.The experimental results show that the measurement accuracy of this proposed method can reach 0.2 mm,which meets the on-line detection requirements of track slabs.

关 键 词：激光三维测量 CRTS型轨道板 位姿校正 承轨面 

分 类 号：O439[机械工程—光学工程]