Transponder system for the transfer of signalling information for rail-bounded vehicles

摘要: A transponder system with ensured synchronization for a railway signalling system, comprising an interrogating station, from which interrogation signal is transmitted continuously, and responder station energized in response to the repeatedly retransmits coded information reply station; achieved, by starting each transmission means of predetermined start generated as result bit sequence retransmitted station. In normal operation immediately after retransmission message or word indicates end this message. At when initially inquiry unit have bad coupling other, amplitude received exceeds certain threshold level starting-up system.