A Study on Dynamic Measurement System of Contact Wire Wear in Electrified Railway

Abstract

As the tension of contact wire in high-speed electrified railway increases greatly, coupled with the fast relative speed of pantograph and catenary, the wear of contact wire is more serious. Timely and accurate measurement of contact wire wear becomes increasingly important. In this paper a dynamic measurement method for contact wire wear in electrified railway is introduced. With the aid of laser supplementary light, the bottom of contact wire is captured by line-scanning camera. The measurement is performed based on the principle of binocular ranging by analyzing the local wear conditions captured with different cameras to calculate the complete wear data of contact wire. The method has been tested on line, and the test data shows that the goal of quickly measuring the contact wire wear is achieved.