Supervised PIR motion-detection system

Details Supervised PIR motion-detection system Supervised PIR motion-detection system

1992-08-05

1995-01-17

Hofsass, Jeffery A.

Communications: electrical

Condition responsive indicating system

Specific condition

340514, G08B 1318

Patent

active

053829441

ABSTRACT:
A passive infrared motion detection system is provided with means for detecting increases and/or decreases in the sensor or system sensitivity by a predetermined amount vis-a-vis a nominal level. Various schemes are disclosed for implementing this concept.

REFERENCES:
patent: 3928849 (1975-12-01), Schwarz
patent: 4560874 (1985-12-01), Cinzori et al.
patent: 4710629 (1987-12-01), Muller et al.
patent: 4743886 (1988-05-01), Steiner et al.
patent: 4922116 (1990-05-01), Grinberg et al.
patent: 5093656 (1992-03-01), Dipoala
patent: 5151682 (1992-09-01), Marinitsch

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