基于机器视觉技术的列车脱轨试验研究

Study on Train Derailment Test Based on Computer Vision Technology

提出一种基于机器视觉技术的列车脱轨运动检测方法。该方法采用高速摄像机记录脱轨防护器以及脱轨轮对运动情况,利用摄像机标定技术建立图像平面与三维空间的对应关系,完成对列车运动轨迹以及纵向运动参数的测量。该测量方法解决了破坏性试验中测试系统安装的难点,突破传统测试方法,所需设备较少,试验现场适应性强。

A new method is Proposed to measure the train derailment motion,which is based on computer vision technology.The method uses the high-speed cameras to record the movement of derailed protector and derailed wheel,and completes the measurement of the train movement trajectory and the longitudinal motion parameters by using the camera calibration technology,which establishes correspondence between the image plane and the three-dimensional space.This measurement method solves the problem of test system installation difficulty in destructive test,breaking the traditional testing methods.It needs less equipment and has a strong adaptability in test site.