摘要
为了检测机车动力学性能参数及监测机车运行状态,当前通常采用了基于传感器的接触式测量方法,因而存在动态测量困难、零漂大和抗干扰能力差等缺点。轮轨接触点位置变化能直观的反映出机车运行状态,所以设计了一套基于相机垂直拍摄的机车轮轨相对横移检测系统。该系统将相机垂直安装在转向架上,利用相机相对于转向架保持相对静止的特点,通过轨道在图像中的坐标变化来测量轮轨的相对横向位移,并分别在无砟和有砟轨道两种不同条件下实现了机车轮轨相对横移检测、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横向位移,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重要意义。
The current contact measurement based on sensor is widely used in dynamic performance parameters detection for monitoring locomotive status. But it has several defects, such as being difficult to dynamic measurement, large zero drift and poor antijamming capability. The change of wheel-rail contact point is the most direct reaction for locomotive status. In order to overcome these defects of the current contact measurement, the detection system of wheel-rail relative lateral displacement based on camera installed on bogie vertically is designed in this paper. In the system, camera is installed on the bogie vertically and remains static to bogie, and the wheel-rail relative lateral displacement is measured by rail coordinate change in the image. Consequently, the system has functions of detecting wheel-rail relative lateral displacement, displaying data and storing data. The experiment results show that the system can acquire wheel-rail relative lateral displacement and has strong adaptability to the detection environment, and it has great important significance to further exploring and evaluating locomotive safe- ty mechanics.
出处
《石家庄铁道大学学报（自然科学版）》
2016年第3期81-86,104,共7页
Journal of Shijiazhuang Tiedao University(Natural Science Edition)
基金
国家自然科学基金(11372199
11572206)
河北省自然科学基金(A2014210142)
关键词
机车运行状态
轮轨接触点
轮轨相对横移
locomotive status
wheel-rail contact point,wheel-rail contact point
