有砟轨道道床断面检测系统的研制

Research and Manufacture of Detection System of Ballast Track Bed Cross-section

为满足铁路现场有砟轨道道床高效养护维修的需要,研制了一套基于激光扫描技术的有砟轨道道床断面检测系统。该系统配备高精度激光扫描传感器,在车辆高速运行的状态下实时获取有砟轨道道床区域的高精度点云信息,并通过多坐标系变换进行空间映射从而建立基于轨道坐标系的道床三维模型,最后基于凸集理论和空间分析算法模型实现了有砟轨道道床断面缺陷和盈/欠砟量的快速自动检测。铁路线路试验表明该系统能够快速高效地检测有砟轨道道床状态,为铁路有砟轨道道床养护维修提供准确、可靠的数据。

To meet the need of efficient maintenance and repair of railway ballast track bed,a set of detection system for ballast track bed cross-section based on laser scan technology was developed.The system was equipped with high precision laser scanning sensor.It can acquire real-time high precision point cloud information within the railway ballast bed area when the train is in high speed.The 3D models of ballast bed with the basis of track coordinate system was established by using multi-coordinate transformation and space mapping method.Finally,based on convex set theory and spatial analysis algorithm model a fast automatic detection for cross-section defects of ballast track bed and the amount of surplus/lack ballast was archieved.Railway test results show that the system can efficiently detect the state of ballast track bed,and provide accurate and reliable track bed data for the maintenance of track bed.