关键词: 接触线磨耗, 线阵, 双目立体视觉, 递归逼近高斯滤波, 振动

Abstract: To overcome the shortcomings of low efficiency and accuracy of contact wire wear detection, a non-contact measurement system based on linear array camera is designed. Based on the principle of binocular stereo vision and the conversion between the coordinate systems, it can derive the formula of contact wire wear. The system uses infinite impulse response filter to filter the images and then extracts the edge pixels points which can be converted to the distance and displayed on the MFC. It also analyzes the error caused in the vibrating state by using the coordinate transformation. Experiments show that the wear of the power contact wire can be measured accurately and the measurement error is less than 0.55 mm.

Key words: contact wire wear, linear array camera, binocular vision, recursive implementation of Gaussian filter, vibrate