钢轨全断面廓形高精度合成方法  

High Precision Synthesis Method of Rail Full Section Profile

作　　者：王宁 周谦 王凡 王昊 王胜春 郝晋斐 WANG Ning;ZHOU Qian;WANG Fan;WANG Hao;WANG Shengchun;HAO Jinfei(Infrastructure Inspection Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)

机构地区：[1]中国铁道科学研究院集团有限公司基础设施检测研究所,北京100081

出　　处：《铁道建筑》2021年第11期135-138,共4页Railway Engineering

基　　金：北京铁科英迈技术有限公司基金(AJJ19508Z)。

摘　　要：为提高钢轨全断面廓形的检测精度,根据检测系统的结构光原理,利用基于平面靶标的标定装置改进了物像坐标变换参数标定算法,对单侧相机分别进行分块高精度标定,并在此基础上完成了双侧相机高精度拼接标定,最后通过设置标准检验模块对检测系统进行精度检定,实现了轨廓系统全断面廓形的高精度合成控制。现场实测结果表明,该方法可有效克服人为操作带来的主观性误差以及传统方法中不可避免的随机系统误差,全面提高全断面廓形获取的精度和稳定性。In order to improve the detection accuracy of rail full section profile,according to the structural light principle of the detection system,the object-image coordinate conversion parameter calibration algorithm was improved by using the calibration device based on planar target,and the single side camera was calibrated in blocks with high accuracy. On this basis,the high precision splicing calibration of bilateral cameras was completed. Finally,the accuracy of the detection system was verified by setting the standard detection module,and the high precision synthesis control of the full section profile of the track profile system was realized. The field measurement results show that this method can effectively overcome the subjective error caused by human operation and the inevitable random systematic error in traditional methods,and comprehensively improve the accuracy and stability of full section profile acquisition.

关 键 词：钢轨廓形检测系统 钢轨廓形合成 平面靶标 标定 精度控制 

分 类 号：U216.3[交通运输工程—道路与铁道工程]