AUTOMATIC BLOCK SIGNAL SYSTEM WITH VOICE TRACK CIRCUITS AND CENTRAL ARRANGEMENT OF EQUIPMENT Russian patent published in 2006 - IPC B61L23/16 

FIELD: railway signaling and communication; internal traffic control.

SUBSTANCE: proposed device is furnished with additional signal signs installed on through light signals, control signal shaping unit, additional signal sign coded signal shaping unit and additional signal sign coded signal shaping unit switch-on unit. Inputs of control signals shaping unit are connected with outputs of track circuit monitoring unit: opening of block section limited by light signal, non-occupancy of block section limited by light signal, opening of block section limited by light signal following in direction of running, non-occupancy of block section of limited by light signal following in direction of running, occupancy of protected section of light signal following in direction of running, occupancy of protected section of second light signal following in direction of running. Inputs of switch-on unit of additional signal sign coned signal shaper are connected to output of control signal shaping unit and outputs of unit monitoring track circuits-closing of block section limited by light signal and occupancy of protected section of light signal.

EFFECT: increased throughput capacity of railways using modern control systems and provision of safety of traction vehicles and preservation of action of automatic block signal system with protected sections in three cases when train is not furnished with control systems providing positive stopping of train at danger signal.

2 dwg