Monitoring rail traffic along railway line by evaluating sound spectrum to detect periodic events indicating faults

摘要

The method involves using a sensor system installed along the rail line. Each sensor detects the sound when the wheels of a train pass along the rail head near the sensor. The sound spectrum is then evaluated to detect the presence of extraordinary periodic events. The evaluation may be performed using identification and speed information extracted from the train. The spectrum may be evaluated by comparing it with that of a non-faulty train. A warning may be provided to the train or train control center via radio or track conductor. An apparatus for monitoring rail traffic is also claimed.