JPS62145875U

JPS62145875U -

Info

Publication number: JPS62145875U
Application number: JP3392886U
Authority: JP
Priority date: 1986-03-11
Filing date: 1986-03-11
Publication date: 1987-09-14

Description

[Brief explanation of drawings]

第１図は本考案の１実施例を示す回路構成図、
第２図は有絶縁軌道回路の列車検知用信号送信回
路に応用した参考例を示す回路構成図、第３図は
従来例を示す簡略回路構成図である。１１……列車、１２……送信器、１３，１４，
１５，１６……フイルタ、１７，１８……受信器
、１９，２０……列車検知リレー、２０ａ，２０
ｄ，２０ｅ……定位接点、２０ｂ，２０ｃ，２０
ｆ，２０ｇ……反位接点、１Ｔ，２Ｔ……軌道回
路、ａ，ｂ，ｃ……境界点。 FIG. 1 is a circuit diagram showing one embodiment of the present invention;
FIG. 2 is a circuit configuration diagram showing a reference example in which an insulated track circuit is applied to a train detection signal transmission circuit, and FIG. 3 is a simplified circuit configuration diagram showing a conventional example. 11...train, 12...transmitter, 13,14,
15, 16... Filter, 17, 18... Receiver, 19, 20... Train detection relay, 20a, 20
d, 20e... Fixed position contact, 20b, 20c, 20
f, 20g... Opposite contact, 1T, 2T... Orbit circuit, a, b, c... Boundary point.

Claims

[Scope of utility model registration request]

One transmitter that superimposes and outputs two signals with different effective frequencies to each of adjacent track circuits, and two receivers that receive the transmitted signal from the transmitter via each of the track circuits are provided. In addition, normally, the transmitter is connected to the connecting end of both track circuits, and each receiver is connected to the opposite end, but when the train enters the front track circuit in the direction of train movement. At times, a switching means is provided for switchingly connecting the transmitter to the opposite end and each receiver to the connecting end, and connecting lines between each track circuit and each receiver and the train in the normal state. A filter is installed in the connection line between each track circuit and the transmitter when the train enters the track circuit on the front side in the direction of train movement, allowing only signals of frequencies effective for the connected track circuit to pass through. Features a signal transmission circuit for the track circuit.