DEVICE FOR AUTOMATIC CAB SIGNALLING SYSTEM PROTECTION AGAINST POWER LINE INTERFERENCE Russian patent published in 2012 - IPC B61L25/02 

FIELD: transport.

SUBSTANCE: invention relates to railway equipment, namely, to railroad ACS and telemetry hardware and may be used for traffic control. Device contains positive and negative poles of power source, matching relay, frontal contacts of code presence relay, third counter, green light relay, red-yellow light relay, resistor, condenser, pulse relay contact. The device is additionally provided with reverse follower of pulse relay, blowout diode, blowout resistor, reverse follower contact, additional condenser, additional resistor, diode. In this device, to positive power source pole via frontal contacts of code presence relay, third counter, green light relay, following is connected: diode anode and frontal contact of red-yellow light relay common contact of which is connected with the first pole of resistor, the first output of matching relay winding the second output of which is connected with negative pole of power source and the first pole of condenser the second pole of which is connected with the second pole of resistor. Diode cathode is connected with rear contact of reverse follower of pulse relay the frontal contact of which is connected with positive pole via additional resistor, and its common contact - with the first pole of additional condenser the second pole of which is connected with negative pole of power source, the first output of pulse relay reverse follower winding and blowout diode cathode, the anode of which is connected with the first pole of blowout resistor, the second pole of which is connected with the second output of reverse follower winding and rear contact of pulse relay, common contact of which is connected with positive pole of power source.

EFFECT: higher reliability of ACS operation.

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