基于双目视觉的接触网几何参数测量系统

接触网是在电气化铁路中沿钢轨上空之字形架设的，供受电弓取流的高压输电线，其担负着把从牵引变电所获得的电能直接输送给电力机车使用的重要任务。针对传统的接触网几何参数测量方法中测量效率低下、精度不高的问题，设计了一种快速、高精度测量系统。系统基于双目视觉测量原理，由指示激光器进行特征指引，通过两台高分辨率摄像机采集测量特征并进行图像处理和三维解算，实现接触网几何参数的实时测量。实验结果表明:系统测量的重复性精度可以达到1mm，实现了接触网几何参数的实时、可靠测量，为接触网的日常维护与检修提供了理论依据。

Measurement system of geometric parameters for overhead line system based on binocular vision

Overhead line system is the high voltage transmission line for pantograph obtaining electric current which is built above the rails in electrified railways. Its key task is to transport the electric energy from traction substation to electric locomotive. Aiming at the problem of low precision and low efficiency in traditional measuring method of geometric parameters, a measuring system is designed which is fast and of high precision. The system is based on principle of binocular vision. It produces the feature using a laser, acquires images using two high-resolution cameras and makes three-dimensional calculation, which makes it possible to measure the geometric parameters of the overhead line system in real time. Experimental result indicates that the repeatability precision of the system can reach up to 1 mm, and that the reliable real-time measurement of geometric parameters of the overhead line system has been accomplished, which provides useful theoretical basis for operating repairs.