Contactless Measuring Method of Overhead Contact Line Positions by Stereo Image Measurement and Laser Distance Measurement

Abstract

A contactless measuring method was developed to measure static positions of overhead contact lines from vehicles, using stereo image measurement and laser distance measurement. Measurement experiments were conducted. By using the combination of two types of sensors, this method can make high detection performance and high measurement accuracy compatible. Moreover, since it is completely contactless, measurement of wires not in contact with the pantograph, such as the catenary wire and the auxiliary catenary wire, is also possible. This method automates the measurement and quantification of condition diagnosis of long contact lines, and should increase maintenance efficiency.