铁道科学与工程学报2018，Vol.15Issue(7)：1825-1831,7.DOI:10.19713/j.cnki.43-1423/u.2018.07.026
一种新的轨距动态检测方法研究
A new method for dynamic measurement of track gauge
摘要
Abstract
A new algorithm of gauge calculation based on laser camera detection was proposed. This algorithm, according to track gauge defined, finds the minimum distance in 16 mm between two rails work side under rail top tread as track gauge measuring value. Considering the influence of camera lens distortion, a nonlinear calibration model of spatial attitude relationship between two laser camera sensors was established, and a calibration program was proposed. In order to quickly locate the profile feature points, this paper put forward the concept of the rail profile feature curve, and proposed a definition of the characteristic curve. Using feature curve can rapidly find the profile feature points. Compared with the traditional detection method, the new algorithm only uses two laser camera sensors, and does not need other auxiliary sensors to modify the car body vibration. Finally, by setting obstacle test through the actual subway line, it is approved that this detection method has the characteristics of certain anti-interference ability, high stability, simple structure, strong real-time online calculation, high detection accuracy and so on.关键词
轨距检测/激光传感器/钢轨轮廓/标定/轮廓特征曲线Key words
gauge detection/laser sensor/rail profile/calibration/profile characteristic curve分类
交通工程引用本文复制引用
熊仕勇,陈春俊,王锋,林严..一种新的轨距动态检测方法研究[J].铁道科学与工程学报,2018,15(7):1825-1831,7.基金项目
国家自然科学基金资助项目(51475387) （51475387）
