The invention discloses a high-speed rail health
monitoring system based on ultrasonic guide wave and a
wireless network. A vehicle-mounted center
processing and decision module sends a detection instruction to an ultrasonic guide wave exciting module through a
wireless network transmission module; the ultrasonic guide wave exciting module generates excitation wave; the ultrasonic guide wave is generated in a rail and transmitted to an ultrasonic guide wave
signal receiving and storage module; the receiving and storage module digitalizes ultrasonic guide wave signals, stores the signals and transmits the signals to the vehicle-mounted center
processing and decision module; and the ultrasonic guide wave signals are filtered and enveloped, features of a
wave packet arrived by the ultrasonic guide wave are extracted, the attribute and the actual
wave speed of the
wave packet in the waveform signals are judged and compared with undamaged condition information in a
database, damage features in the waveform signals are extracted, whether damage exists in a high-speed rail or not is judged, the damage degree is judged, and the position of the damage is assessed. Through the
system, the detection speed and the detection capability of
micro damage of the rail are improved, and the time for occupying the high-speed rail is reduced.