INSULATION FAILURE WARNING DEVICE FOR TRACK CIRCUIT

PROBLEM TO BE SOLVED: To provide a track circuit capable of immediately performing detection and noticing it when insulation failure is occurred between the adjacent track circuits. SOLUTION: Frequencies of train detection signals transmitted from a transmission device 2 to rails 1, 1 are made different between mutual adjacent sections. On a receiving device 3, band area filters 13-3, 13-4 for extracting the train detection signal having the frequency allotted to the adjacent section are provided. When output of a train detection level or higher is generated from any one of the band area filters 13-3, 13-4, insulation failure notice instruction is generated from the receiving device 3 and is displayed on a display device. COPYRIGHT: (C)2009,JPO&INPIT