一种火车轮轨相对垂向位移视频检测系统

发布时间：2019-01-21 15:46

【摘要】：机车轮轨之间的相对位移是轮轨接触状态最直接的反映,为了监测列车运行的状态及完善运行安全性机理,传统方法是采用基于传感器的接触式测量。针对其存在动态测量困难、零漂大和抗干扰能力差等缺点,设计了一种火车轮轨相对垂向位移视频检测系统。该系统将相机垂直安装在转向架上,激光源也安装在转向架上并使激光照到轨道上,利用相机、激光源和转向架三者保持相对静止的特点,通过激光点在轨道图像中的纵坐标变化来测量轮轨的相对垂直位移。最后,在无砟和有砟轨道两种不同条件下实现了机车轮轨相对垂向位移检测、数据显示和存储。实验结果表明,该系统不仅能显示轮轨相对垂向位移,而且对检测环境有较强的适应性,这对进一步探索和评价机车运行安全性机理有着重要的意义。
[Abstract]:The relative displacement between the wheel and rail of the locomotive is the most direct reflection of the wheel-rail contact state. In order to monitor the running status and improve the running safety mechanism, the traditional method is to adopt the sensor-based contact measurement. In view of the disadvantages of dynamic measurement, zero drift and poor anti-interference ability, a kind of train wheel/ rail relative vertical displacement video detection system is designed. The system is vertically arranged on the bogie, the laser source is also arranged on the bogie and the laser is irradiated onto the track, the camera, the laser source and the bogie are used for maintaining the relative static characteristics, the relative vertical displacement of the wheel and rail is measured by the change of the ordinate of the laser spot in the track image. and finally, the relative vertical displacement detection, the data display and the storage of the wheel/ rail of the locomotive are realized under two different conditions of the ballastless track and the ballast track. The experimental results show that the system not only can show the relative vertical displacement of the wheel/ rail, but also has a strong adaptability to the detection environment, which is of great significance to the further exploration and evaluation of the operation safety mechanism of the locomotive.
【作者单位】：石家庄铁道大学电气与电子工程学院;
【基金】：国家自然科学基金项目(11372199) 河北省自然科学基金项目(A2014210142)
【分类号】：U270.7;TP391.41

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