AUTOMATIC BLOCKING DEVICE WITH TONAL RAIL CIRCUITS AND CENTRALISED EQUIPMENT LOCATION Russian patent published in 2010 - IPC B61L23/16 

FIELD: transport.

SUBSTANCE: automatic blocking device with tonal rail circuits and centralised equipment location contains traffic intermediate signal, limiting block-sections and installed on borders of block-sections. Also the device contains rail circuits of traffic intermediate signal protective sections, rail circuits of block-sections, rail circuit control unit. Control unit includes generators connected with origins of rail circuits, and receivers connected with ends of rail circuits. The device also contains units for transmission to locomotive of digital code signals, units for coding enabling, herewith, triggering input of each coding enabling unit is connected with corresponding output of enabling sending "КЖ" code of rail circuit control unit configuring input of which is connected to controller output connected via communication channel with central control room.

EFFECT: devise simplification, improvement of its reliability and reduction of dimensions.

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