Vehicle alarm system

Details Vehicle alarm system Vehicle alarm system

1976-06-16

1977-03-29

Waring, Alvin H.

Communications: electrical

Selective

Having indication or alarm

340414, 325304, 325312, G08B 1900

Patent

active

040152375

ABSTRACT:
A vehicle alarm system provides an audible alarm in the audio reproduction system of a vehicle when an abnormal condition is detected in an operating part of the vehicle. A sensor at each monitored operating part detects an abnormal condition occurring thereat and produces an abnormal condition signal when detecting such a condition. The abnormal condition signals from the sensors are supplied as inputs to an alarm signal supply circuit which produces alarm signals having different frequencies. A switching circuit switches the audio reproduction system from audio signals to an alarm signal upon the receipt of an abnormal condition signal from a sensor. The alarm signal supply circuit then supplies an alarm signal to the audio frequency amplifier of the audio reproduction system. When a plurality of sensors detect abnormal conditions simultaneously, a priority sequence judging circuit determines the degree of importance of each alarm signal and the priority sequence of the abnormal condition signals.

REFERENCES:
patent: 3949358 (1976-04-01), Higashi

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