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특허 상세정보

Gas concentration monitoring system

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G01N-021/00   
미국특허분류(USC) 356/432 ; 356/437
출원번호 US-0054483 (1998-04-03)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Westerlund & Powell, P.C.
인용정보 피인용 횟수 : 10  인용 특허 : 13
초록

A system for monitoring the concentration level of a gas in a monitored environment, e.g., for monitoring the concentration level of a fire suppression agent in the engine bay and/or cargo bay of an aircraft. The system includes a light source for producing source light, an optical system that directs the source light along a plurality of different optical paths having different respective optical path lengths, and a plurality of photodectors that are positioned to receive the source light that traverses different respective ones of the plurality of diff...

대표
청구항

[ What is claimed is:] [1.] A system for monitoring the concentration level of a gas in a monitored environment, comprising:means for producing light;means for directing the light along a plurality of different optical paths having different respective optical path lengths;means for filtering the light to pass only a prescribed spectral band which includes an optical absorption wavelength of the gas;means for detecting the filtered light that traverses each different optical path length, and for producing a plurality of output signals indicative of the c...

이 특허에 인용된 특허 (13)

  1. Wong Jacob Y. (Santa Barbara CA). Diffusion-type gas sample chamber. USP1994085340986.
  2. Akiyama Shigeyuki (Miyanohigashi-machi JPX) Fujiwara Masahiko (Miyanohigashi-machi JPX) Koga Fujio (Miyanohigashi-machi JPX) Shimizu Naohito (Miyanohigashi-machi JPX) Uno Toshihiko (Miyanohigashi-mac. Gas analyzer. USP1997125693945.
  3. Miyazaki Tadashi (Hachioji JPX) Kawasaki Kazuhiro (Hachioji JPX). Gas analyzing apparatus. USP1997115689114.
  4. McCaul Bruce W. (1370 Lincoln Ave. Palo Alto CA 94301) Doggett David E. (Sunnyvale CA). Gas spectroscopy. USP1997045625189.
  5. Parsons Michael L. (San Dimas CA) Hutchins Peter L. (Roland Heights CA) Tseng Yeong-Jeng V. (Phillips Ranch CA). Infrared overheat and fire detection system. USP1991105059953.
  6. Jacobson Esther (Tel Aviv ILX) Spector Yechiel (Tel Aviv ILX) Goldberg Ephraim (Tel Aviv ILX). Method and apparatus for detecting hydrocarbon vapors in a monitored area. USP1994015281816.
  7. Wong Jacob Y. (Santa Barbara CA). Multi-channel gas sample chamber. USP1993065222389.
  8. Paz Frederick M. (Mokelumne Hill CA). Myocardial infarction and ischemia detection method and apparatus. USP1996055515859.
  9. Wong Jacob Y. (Santa Barbara CA). NDIR gas analysis using spectral ratioing technique. USP1994085341214.
  10. Uno Masahiro (Hachioji JPX) Okuyama Hitoshi (Tokyo JPX) Ohishi Mituru (Hachioji JPX) Akao Kozo (Hino JPX) Taniyama Mitsuo (Hino JPX). Non-dispersive infrared gas analyzer including gas-filled radiation source. USP1995075429805.
  11. Fabinski Walter (Kriftel DEX) Wiegleb Gerhard (Neu-Anspach DEX) Hering Peter (Garching DEX) Fuss Werner (Garching DEX) Haisch Michael (Dsseldorf DEX). Non-dispersive infrared spectrometer. USP1996015486699.
  12. Fabinski Walter (Kriftel DEX) Deptolla Udo (Ober-Olm DEX). Nondispersive infrared gas analyzer. USP1981074281248.
  13. Brauer Stefan (Sdra Sandby SEX) Castor Rolf (Hgersten SEX) Linge Anders (Kvlinge SEX) Olson Sven-Gunnar (Arlv SEX). Spectrophotometric method and spectrophotometer for performing the method. USP1995025387979.