Vehicle security system with battery tampering detection

Details Vehicle security system with battery tampering detection Vehicle security system with battery tampering detection

1991-02-08

1992-10-06

Ng, Jin F.

Communications: electrical

Land vehicle alarms or indicators

Of burglary or unauthorized use

340426, 340455, 340438, 180279, 307 107, B60R 2510

Patent

active

051535580

ABSTRACT:
A vehicle anti-theft system is equipped with a circuit to produce a pulse signal when a disconnected vehicle battery is reconnected, and a normally asleep microcomputer based controller is programmed to wake up upon receipt of the pulse signal or another detector signal, and to evaluate the status of each detector signal and the armed, disarmed and alarm state of the controller to sound an alarm, if appropriate, in response to the battery reconnect signal. The armed, disarmed or alarm state of the controller is stored in a non-volatile memory so that information will be kept indefinitely during power loss.

REFERENCES:
patent: 4462022 (1984-07-01), Stolarczyk
patent: 4887064 (1989-12-01), Drori
patent: 4965738 (1990-10-01), Bauer

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