Self-balancing alarm system

Details Self-balancing alarm system Self-balancing alarm system

1980-09-26

1982-09-07

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

With particular system function

340506, 340508, 340511, 330 9, G08B 2900

Patent

active

043486614

ABSTRACT:
An alarm system includes a security loop comprising a plurality of sensors, a circuit connected to the security loop and an alarm. The circuit is responsive to a change in condition within the security loop, and upon any change over a threshold value or substantially any change which is rapid, irrespective of value, the responsive circuit functions to enable the alarm. The alarm may be of audible and/or visual-type with additional capability of signalling a remote control center. The responsive circuit includes a network for self-balance thereby to compensate for changes which are responsive to ambient conditions.

REFERENCES:
patent: 2575447 (1951-11-01), Gossick
patent: 2742634 (1956-04-01), Bergen et al.
patent: 2871466 (1959-01-01), Vassil et al.
patent: 3646552 (1972-02-01), Fuhr
patent: 3702970 (1972-11-01), Stetzler
patent: 3801972 (1974-04-01), Ho Kim et al.

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