On-Board Detection of Longitudinal Track Irregularity Via Axle Box Acceleration in HSR

Track irregularity detection serves as one of the most essential technologies to interpret in-service condition high-speed railway (HSR) and ensure comfortability safety in HSR service. This study newly proposed a novel on-board technique integrated with developed algorithm for identifying longitudinal track obtain monitoring further based maintenance (CBM). Such includes data acquisition unit, spatial-time synchronous calibration unit processing which can be directly installed commercial trains. Via inertial reference method, an is derive from acceleration measured axle box train by combining multiple digital filters. A prototype on comprehensive inspection verify feasibility test lines eventually. The comparison affirms that system has high accuracy sound repeatability, certain enables real-time online condition.