DEVELOPMENT OF AUTOMATIC PROCESSING SYSTEM FOR CONTACT LOSS SIGNAL

Contact loss between pantographs of electric rolling stock and contact wire is used to grasp structures of overhead line equipment and current collecting quality. Since the contact loss is mainly evaluated by the contact loss rate and times, it is necessary to process contact loss signals. Until now, a waveform processing software developed by the Railway Technical Research Institute (Japan) has been used, requiring the reproduction of data once again after field tests by consuming much time and effort. In this paper, the authors describe the development of an automatic processing system for contact loss signals that can detect contact loss on a real time basis and automatically calculates the contact loss rate and duration times. From field tests, it has been confirmed that this system has the same performance processing contact loss as the former system.