CENTRALISED SYSTEM TO CONTROL TONE-FREQUENCY RAIL CIRCUITS FOR HIGH-SPEED TRAFFIC Russian patent published in 2010 - IPC B61L3/12 

FIELD: transport.

SUBSTANCE: invention relates to railway automatic control and telemetry systems and can be incorporated with microprocessor systems of centralisation of intermediate stations. There are blocks with unlimited rail circuits and lights between EC stations. Every rail circuit has one end connected with floor device for connection with adjacent transmitting end of rail circuit and its other end connected with floor device for connection with its receiving end. All said floor devices are connected via cable lines with ES stations. ES stations accommodate receivers of rail circuit tone frequency code signals and main transmitters of said signals. Receivers inputs are connected via cable circuit with outputs of appropriate floor devices. Additionally, said system incorporates switching units for ES stations, control units and standby transmitters. Outputs of all main transmitters are connected via said switching units and cable circuit with inputs of floor devices, while via communication ports they are connected with those of ES station control units. Standby transmitters are connected via their communication ports with those of ES station control units, while their outputs are connected with separated outputs of ES station switching unit. Control ports of every control unit are connected with switching unit control ports.

EFFECT: higher reliability.

1 dwg