Motion alarm system

Details Motion alarm system Motion alarm system

1981-07-10

1984-05-22

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

340573, 340575, G08B 2100

Patent

active

044504373

ABSTRACT:
A motion alarm system including a motion detector which provides a motion signal. A signal level detector for detecting the motion signal and providing an output signal when the motion signal exceeds a selected level, and an alarm circuit providing an alarm if the motion signal does not exceed the selected level for a predetermined time.

REFERENCES:
patent: 3802417 (1974-04-01), Lang
patent: 3982238 (1976-09-01), Byers
patent: 4017843 (1977-04-01), Yanagishima
patent: 4110741 (1978-08-01), Hubert et al.
patent: 4146885 (1979-03-01), Lawson, Jr.
patent: 4196429 (1980-04-01), Davis
patent: 4279257 (1981-07-01), Hochstein
patent: 4292630 (1981-09-01), Dumont

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