Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1998-01-20
2000-08-29
Wu, Daniel J.
Communications: electrical
Condition responsive indicating system
Specific condition
340578, 340628, 340629, 340630, 2503381, 2503361, 25033901, 250554, G08B 1712
Patent
active
061115118
ABSTRACT:
A fire and smoke detector utilizes a statistical analysis of the near infrared radiation incident on it. The spectral radiation intensities incident on the fire detector are continuously measured at two near-infrared wavelengths, and a time series of apparent source temperatures is obtained from these measurements. The power spectral density and the probability density function of the apparent source temperatures are sufficient to determine the presence of a fire in the vicinity of the detector. The detector can indicate the presence of a fire in an adjoining room from the radiation which is incident on it due to reflections from common building materials. The present invention relates to fire and/or smoke detection methodology and associated apparatus. The detector utilizes fiber optic as a viewing and absorption/scattering detection means.
REFERENCES:
patent: 3940753 (1976-02-01), Muller
patent: 3983548 (1976-09-01), Tufts
patent: 4260984 (1981-04-01), Honma
patent: 4533834 (1985-08-01), McCormack
patent: 4671362 (1987-06-01), Odashima
patent: 4675661 (1987-06-01), Ishii
patent: 4857895 (1989-08-01), Kaprelian
patent: 5073769 (1991-12-01), Kompelien
patent: 5107128 (1992-04-01), Davall et al.
patent: 5245496 (1993-09-01), Cabalfin
patent: 5400014 (1995-03-01), Behlke et al.
patent: 5625342 (1997-04-01), Hall et al.
patent: 5673027 (1997-09-01), Morita
patent: 5691699 (1997-11-01), Vane et al.
patent: 5705988 (1998-01-01), McMaster
patent: 5751216 (1998-05-01), Narumiya
patent: 5889468 (1999-03-01), Banga
Gore Jay P.
Joseph Rony K.
Lloyd Andrew
Sivathanu Yudaya
Tseng Likeng
Canfiel Jeffrey H.
Pham Toan
Purdue Research Foundations
Wu Daniel J.
LandOfFree
Flame and smoke detector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Flame and smoke detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flame and smoke detector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1254062