测试科学与仪器2017，Vol.8Issue(3)：205-214,10.DOI:10.3969/j.issn.1674-8042.2017.03.001
高速列车动态包络线测量一种现场快速标定方法
A rapid on-site calibration method for measuring dynamic envelope curve of high-speed trains
摘要
Abstract
Dynamic envelope curve is a significant parameter to assess the running safety of high-speed trains.Up to now the method based on binocular stereo vision is the only way available to measure the dynamic envelope curve of a train,the speed of which is over 200 km/h.Nevertheless the method has two limitations,one is large field-of-view (FOV),the other is calibration time.Hence portable calibration equipment,easy-to-build target and rapid calibration algorithm are required to complete the calibration.In this paper,a new rapid on-site calibration method with large FOV based on binocular stereo vision is proposed.To address these issues,a light target has been designed,the rail coordinate system (RCS) is represented by 40 fixed retroreflective points on the target,and they are utilized to calibrate the parameters of two cameras.In addition,two cameras merely capture a single image of the target simultaneously,and the intrinsic and extrinsic parameters of the cameras can be calculated rapidly.To testify the proposed method,the experiments have been conducted and the results reveal that the accuracy can reach ±1 mm,which can meet the measurement requirement.关键词
高速列车/动态包络线/现场标定/大视场Key words
high-speed train/dynamic envelope curve/on-site calibration/field-of-view (FOV)分类
交通工程引用本文复制引用
刘常杰,杨杜鹃,付鲁华,王仲..高速列车动态包络线测量一种现场快速标定方法[J].测试科学与仪器,2017,8(3):205-214,10.基金项目
National Science and Technology Major Project of China (No.2016ZX04003001) （No.2016ZX04003001）
