接触线几何参数图像检测系统设计

摘要

In order to guarantee the normal operation of the electric locomotives, it is necessary to detect the dynamic pantograph-catenary geometry parameters, such as the contact line height and the pull-out value in real time. At first, after analyzing the imaging features of the pantograph and the contact line, the pantograph is extracted combining the level lines detection and the template matching, and the contact line is extracted using a simple locating and tracking method. Then the contact line height and the pull-out value are calculated after camera calibration. Finally the system will compare the results with the vigilance parameters and if there exists abnormal information, the system will make alarm by message and upload the abnormal information to the database. The practice result shows that the system can detect the contact line height and the pull-out value exactly, and is not sensitive to the variety of light and the complex background, so it fully meets the need of the detection in industry.%为了保证电力机车的正常运行，需要实时监控接触线高度和拉出值等动态几何参数。首先通过分析受电弓和接触线的成像特点，结合水平直线检测和边缘模板匹配识别受电弓，设计简单的定位跟踪方法识别接触线，然后通过摄像机标定计算接触线高度和拉出值，最后将检测结果与警戒参数进行对比，如果发现异常，系统将进行短信报警并将异常信息上传数据库。实践结果表明：该系统能够准确检测接触线高度和拉出值，而且对光照变化和背景复杂等影响因素不敏感，满足工业的检测需求。