VEHICLE ANTITHEFT DEVICE Russian patent published in 2010 - IPC B60R25/04 

FIELD: transport.

SUBSTANCE: invention relates vehicle to safety and antitheft devices. Control station is equipped with transmitter, while vehicle carries receiver, actuator and passive transponder. Said transmitter comprises master oscillator, modulation coder generator, phase modulator, power amplifier, transceiver antenna, HF amplifier, duplexer, phase detector and computer. Also transmitter additionally comprises receiving antenna, HF amplifier, two multiplexers, two LF filters, two extremal controllers, two units of controlled delay, range indicator and angle indicator. Receiver comprises receiving antenna, HF amplifier, two spectrum width metres, narrow-band filter, phase detector, unipolar gate and storage. Actuator comprises key, ignition coil, two relays, switch, ignition switch, storage battery, side lights, sound signaling device, control switch, three capacitors, thyristor, two resistors and stabilising diode. Transponder comprises piezo crystal, micro strip antenna, electrodes, buses and reflecting plates. Principle of remote search and detection of stolen vehicle proceeds from using phase-modulated signal irradiated by transmitter to be received and selected, detected, accumulated and used to cut in side lights, sound signaling device and vehicle engine outage.

EFFECT: expanded performances, provision of detection of stolen vehicle and determination of its coordinates.

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