基于视觉的铁路接触网几何参数检测方法

Vision-Based Detection Method of Railway Catenary Geometric Parameters

针对铁路接触网几何参数检测的需要,提出了一种基于视觉的铁路接触网几何参数检测方法。该方法利用结构光视觉测量系统获取接触网几何特征图像,通过模板匹配的方法获取图像中的检测点,带入成像公式求出接触网导高与拉出值。应用方面,在西安地铁1号线、大西高铁(西安北段)线路延长线上进行了线路测试。结果表明,基于视觉的接触网几何参数检测方法精度高、稳定性好,具有广阔的应用前景。

Aiming at the need of detecting geometrical parameters of railway catenary,a vision-based method for detecting geometrical parameters of railway catenary is proposed.The method uses structured light vision measurement system Acquire the geometric feature image of the catenary,obtain the detection points in the image by the method of template matching,and bring in the imaging formula to calculate the catenary conduction height and pull-out value.In terms of application,in Xi’an Metro Line 1,A line test was carried out on the extension line of the Daxi high-speed railway(Xi'an north section).The results show that the vision-based method for detecting geometric parameters of the catenary has high accuracy and good stability,and has broad application prospects.