Communications: electrical – Selective – Having indication or alarm
Patent
1978-11-01
1980-11-18
Waring, Alvin H.
Communications: electrical
Selective
Having indication or alarm
340521, G08B 1900
Patent
active
042348668
ABSTRACT:
A centralized alarm sytem for warning of abnormalities in a plurality of components, in particular, for a vehicle, comprising, a plurality of sensors, each associated with a component for producing an abnormality signal when the associated component becomes abnormal, a control circuit connected to each of the sensors for producing a main indication signal when any one of the sensors produces an abnormality signal and for producing a local indication signal for each sensor producing an abnormality signal, and a plurality of local indicators, each associated with one of the sensors and connected to the control circuit being capable of producing a perceptable indication when an associated one of the sensors produces an abnormality signal. A main indicator is also connected to the control circuit for producing a perceptable indication when a main indication signal is produced by the control circuit with the control circuit including a systems check device for turning the main indicator on when a main indicator is produced in the control circuit. The control circuit also includes a component checking device for permitting individual activation of each local indicator when a corresponding local indication signal is produced.
REFERENCES:
patent: 3839701 (1974-10-01), Pomerantz
patent: 3964302 (1976-06-01), Gordon et al.
patent: 4149155 (1979-04-01), Kishi et al.
Seymour, "Car Systems Monitor", Mar. 1977, pp. 210, 211, 212.
Kuroda Masahiko
Ohsawa Eiji
Nissan Shatai Co. Ltd.
Waring Alvin H.
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