Alarm sensor multiplexing

Details Alarm sensor multiplexing Alarm sensor multiplexing

1995-02-28

1998-07-21

Hofsass, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

Of burglary or unauthorized use

340428, 340511, 340518, 340521, 307 102, 180287, B60R 2510

Patent

active

057839891

ABSTRACT:
A security system for monitoring a protected area and sounding an alarm including a plurality of sensors arranged about a protected area for sensing incoming threat, device for generating at least one pulse for each sensor activated by the incoming threat to the area, an alarm controller for receipt of the pulses and sounding of an alert, and a single wire connecting outputs of the sensors to the controller for transmitting the pulses generated by the plurality of sensors to the controller.

REFERENCES:
patent: 3846639 (1974-11-01), Ueda et al.
patent: 4077030 (1978-02-01), Helava
patent: 4103337 (1978-07-01), Whiteside
patent: 4111058 (1978-09-01), Gross
patent: 4311986 (1982-01-01), Yee
patent: 4383242 (1983-05-01), Sassover et al.
patent: 4965550 (1990-10-01), Wroblewski
patent: 4991123 (1991-02-01), Casamassima
patent: 5272476 (1993-12-01), McArthur et al.
patent: 5302941 (1994-04-01), Berube

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