Development of a New Receiver for High-Voltage Asymmetric Pulse Track Circuits
Shiwu Yang · Measurement & Control Technology · 2012
Track circuit is one of the very important equipment in the railway signal system.The failure of track circuit will affect the traffic safety.Bad shunt of track circuit is a common fault in railway signal system,and the high-voltage asymmetric pulse(HVAP) track circuit is an effective solution to it.However,there are some shortcomings in the current equipment such as line attenuation,need compensation,expensive cost,and so on. A network-based track circuit receiver solution is proposed.The characteristic parameters of high-voltage asymmetric pulse are extracted directly in the outdoor,and sent to indoor devices through CAN.Field test data show that the new receiver meets the design requirements,and can work reliably.