SYSTEM TO PROTECT VEHICLE FROM UNAUTHORIZED USE Russian patent published in 2004 - IPC

FIELD: transport engineering; security systems.

SUBSTANCE: in proposed security system central control unit is connected with paging communication receiver, vehicle-carried unit for remote identification of user, security part of system and through immobilizer, with personal warning transmitter and with engine interlock mechanism. Plus pole of vehicle-carried supply source is connected through ignition switch to ignition input terminal of central control unit. System includes N remote-controlled relays WAIT UP. Each relay contains series-connected matching unit, decoder, storage element and normally closed controllable relay made for connection to corresponding N functional member of vehicle. Relay includes also motion sensor and delay element whose outputs are connected, respectively, to second and third inputs of storage element. Combined inputs of delay element and matching unit are connected to output of central control unit combined in one of outputs with ignition input terminal. In WAIT UP relay system decision on interlocking of engine is taken without use of central control unit.

EFFECT: reduced possibility of hi-jacking of vehicle if central control unit is switched off, for instance, during remote starting and warming up of engine.

2 cl, 4 dwg