Development of a 3D Vibration Measurement Method for Overhead Contact Lines Using a Stereo Camera

Abstract

We have developed a method for measuring the three-dimensional vibration of overhead contact lines by analyzing the image data from videos taken by two cameras. This method makes it possible to measure the vibration of the target equipment from a position away from the equipment without making contact. In addition, because it is not necessary to attach special markers to the equipment, there is no need to enter the tracks and arrange for a power outage to carry out the measurement. This paper outlines the measurement procedure of the developed method, presents the results of the validation tests in the laboratory, and shows an example of the application to an actual overhead contact line equipment.