MULTIPLE-SYSTEM TRAIN DETECTION MEANS FOR CROSSING

摘要

PROBLEM TO BE SOLVED: To realize the redundant configuration of a train detection device at the start point of an alarm by a simple structure at low cost. SOLUTION: DC and AC voltages supplied as power voltages to a train detecting detector 6 and a crossing control element 4 installed at the start point of an alarm are superimposed by a transfer block 10 installed on a crossing road 3 side and transmitted to a transmission block 7 installed on the alarm start point side through a pair of cables 11a of a transmission cable 11. DC and AC train detection signals outputted from the detector 6 and the crossing control element 4 are superimposed by the transfer block 7 installed on the alarm start point side and transmitted to the transfer block 10 installed on the crossing road 3 side through the other pair of cables 11b of the transmission cable 11. The Number of the transfer cables 11 laid down between the crossing road 3 and the alarm start point is reduced. COPYRIGHT: (C)2004,JPO&NCIPI