Real-Time Fault Diagnosis of Train Bogie Using FBG Sensors

To measure the temperature profile of various critical parts on a train bogie to fore-warn the train drivers the potential failures in those mechanical parts, such as the axle and motor bearing, gear box bearing, and braking mechanisms, which could go undetected under existing maintenance procedure, and so as to reduce the possibility of sudden breakdowns. Eighteen fiber Bragg grating sensors are installed in those parts, and an interrogation system is used to capture the sensor data, then a data processing and presentation software consisting of a graphical user interface is to present the data and fore-warn the train drivers. The system is successfully built and tested in a train which services in the Airport Express Line of Hong Kong.