CENTRALISED CONTROL SYSTEM FOR TRACKSIDE TONE-FREQUENCY RAIL CIRCUITS Russian patent published in 2010 - IPC B61L23/16 B61L3/12 B61L25/00 

FIELD: transport.

SUBSTANCE: centralised system of control of trackside tone-frequency rail circuits between adjacent stations cabs comprises block-sections with unlimited tone-frequency rail circuits and passage signal lights. One end of every rail circuit is connected to floor device of matching with adjacent rail circuit transmitting end, while its another end is connected with device to match with its reception end floor device. All floor reception end and transmission matching devices are cable-connected with dispatcher cabs adjoining their block-sections. Stations cabs accommodate tone-frequency code signal receivers and tone-frequency code signal transmitters. Transmitters outputs are connected to floor devices of rail circuit transmitting ends and alternate by carrier frequency of code signals. Every pair of tone-frequency code signals receivers has their inputs connected with first and second output of switching unit corresponding to said pair. First and second inputs of switching unit are cable-connected via appropriate pair of floor matching devices with adjacent rail circuit receiving ends. Switching unit control input is connected with control unit output. Fist and second communication ports of the latter are connected with communication ports of appropriate pair of code signal receivers in appropriate adjacent rail circuits.

EFFECT: higher reliability of system.

1 dwg