Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1996-10-25
1998-06-09
Swann, Glen
Communications: electrical
Condition responsive indicating system
Specific condition
250221, 2503383, 250340, 307116, 307117, 340521, 340577, 340693, G08B 13193
Patent
active
057641463
ABSTRACT:
A multifunction passive infrared occupancy sensor functions as an occupancy sensor for security systems and also as an occupancy sensor for energy management control systems. The occupancy sensor comprises at least one segmented infrared lens array wherein the segments of the infrared lens array establish different optical lobes in the field of view of the occupancy sensor. At least one pyroelectric infrared detector is positioned at or near the focal point of the segmented infrared lens array, for detecting movement of infrared sources within the field of view of the occupancy sensor and producing an output signal representative thereof. A processing means analyzes the output signal of the detector for security detection purposes by detecting changes in the output signal greater than a given security threshold. The processing means also analyzes the output signal of the detector for energy management purposes by detecting changes in the output signal greater than a given energy management threshold, which is less than the security threshold. In one embodiment first and second processing circuits detect changes in the detector output signal greater than the security threshold and energy management threshold. In a second embodiment the output of the detector is coupled to an analog to digital converter, the output of which is coupled to a digital processor which utilizes one of two different software processing routines, a security threshold processing routine, and an energy management threshold processing routine. A further embodiment electronically switches detector elements in a detector element array.
REFERENCES:
patent: 4752769 (1988-06-01), Knaup et al.
patent: 4864136 (1989-09-01), Behlke
patent: 4906976 (1990-03-01), Guscott
patent: 5106325 (1992-04-01), Robinson et al.
patent: 5115967 (1992-05-01), Wedekind
patent: 5126718 (1992-06-01), Doctor
patent: 5221919 (1993-06-01), Hermans
patent: 5266807 (1993-11-01), Neiger
patent: 5290175 (1994-03-01), Robinson et al.
patent: 5395042 (1995-03-01), Riley et al.
patent: 5479812 (1996-01-01), Juntunen et al.
patent: 5486810 (1996-01-01), Schwarz
patent: 5509108 (1996-04-01), Yeh
patent: 5525846 (1996-06-01), Newell et al.
patent: 5586048 (1996-12-01), Covely
patent: 5640143 (1997-06-01), Myron et al.
Lonmark Application Layer Interoperability Guidelines, Lonmark Interoperability Association, pp., 1-1-4-3.
Baldwin John R.
Batko Thomas J.
Ellison David F.
'Hubbell Incorporated
Presson Jerry M.
Roch William C.
Swann Glen
LandOfFree
Multifunction occupancy sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multifunction occupancy sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multifunction occupancy sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2205084