Antitheft device

Details Antitheft device Antitheft device

2003-12-16

2009-02-10

Sherry, Michael J (Department: 2836)

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

C340S988000, C340S989000

Reexamination Certificate

active

07489049

ABSTRACT:
An antitheft system can be provided by constructing such that, when a stop signal has been inputted from an engine7, a main controller2outputs, until a first predetermined time Ts elapses, a turn-on signal to switches8, 9to perform a similar antitheft processing as in an operation of the engine7and after an elapse of the first predetermined time Ts, instructs the switch9to repeat a turn-on and turn-off at predetermined time intervals Δt, and, whenever the switch9is brought into a turned-on position, detects a position at that time by a position detecting controller3and compares the position with a position at the time of an engine stop to determine whether or not a theft has taken place. Owing to this construction, it is no longer necessary to always feed power to the position detecting controller3during the stop of the engine7, thereby making it possible to cut down the feeding of as much power to the controller3as a time elapsed during which the switch9is kept off. The antitheft system can, therefore, minimize the power consumption of a control system during the engine stop.

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