Infrared intrusion detector circuit

Details Infrared intrusion detector circuit Infrared intrusion detector circuit

1977-07-22

1979-12-18

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

250221, 250349, 307360, 328109, 340565, G01D 2704, G08B 1318

Patent

active

041796918

ABSTRACT:
A circuit for an infrared intrusion detector comprising a plurality of receiving directions or regions which are separated from one another and a radiation receiver, at the output of which there appears an electrical signal corresponding to the infrared radiation which is absorbed by all of the receiving directions or regions. The circuit is structured such that an alarm signal is delivered when the received infrared radiation both ascends in a predetermined manner as well as descends in a predetermined manner within a given delay time.

REFERENCES:
patent: 3720131 (1973-03-01), Frohock, Jr. et al.
patent: 3858192 (1974-12-01), Fischer
patent: 3928849 (1975-12-01), Schwarz
patent: 3958118 (1976-05-01), Schwarz

Affiliated with

Also associated with

Rating

Infrared intrusion detector circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Infrared intrusion detector circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared intrusion detector circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-455644