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Photoacoustic device and process for multi-gas sensing

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G01N-021/61
  • G01N-021/03
출원번호 US-0778382 (1996-12-31)
발명자 / 주소
  • Wood R. Andrew
  • Rezachek Thomas M.
  • Hegel Rudy R.
출원인 / 주소
  • Honeywell Inc.
대리인 / 주소
    MacKinnon
인용정보 피인용 횟수 : 29  인용 특허 : 16

초록

A photoacoustic gas sensing system includes either separate lasers or an arrangement of emitters and filters, to provide infrared energy within at least two distinguishable frequency bandwidths, modulated at two or more associated and different modulating frequencies. The modulated energy signals il

대표청구항

[ What is claimed is:] [1.] A photoacoustic cell for use in determining gas concentrations, including:a substantially continuous wall means for defining and substantially enclosing a measurement chamber, said wall means being substantially entirely formed of a gas permeable material transparent to r

이 특허에 인용된 특허 (16)

  1. Oehler Oskar (Streulistrasse 24 8032 Zrich CHX) Mosbach Klaus (Rebbergstrasse 83 8102 Oberengstrigen CHX) Seifert Martin (Elionorenstrasse 16 8032 Zrich CHX) Kunz Heinrich (Preyerstrasse 16 8001 Zuri, Apparatus for the photoacoustic detection of gases.
  2. Dewey ; Jr. C. Forbes (Belmont MA), Detecting trace gaseous species acoustically in response to radiation from an intense light source.
  3. Oehler, Oskar; Fries, Alexis, Detection means for the selective detection of gases, based on optical spectroscopy.
  4. Brauer Lothar (Busseallee 14 1000 Berlin 37 DEX), Gas analysis sensor for measuring concentration of gas constituent.
  5. Wong Jacob Y. (Santa Barbara CA), Gas sample chamber.
  6. Baskins Lowell L. (Santa Barbara CA) Durham Rodney M. (Santa Barbara CA), Hydrocarbon gas analyzer.
  7. Rein Alan D. (Shoreview MN) Olson John C. (Shoreview MN) Bachmann Philipp A. (Zurich CHX) Bogli Urs F. (Zurich CHX), Indoor air quality sensor and method.
  8. Oehler Oskar (Streulistrasse 24 Zrich CHX) Sourlier David (Zweierstrasse 8 Niederrohrdorf CHX) Fries Alexis (Dietikon CHX), Light collector and its use for spectroscopic purposes.
  9. Burough Irvin G. (1656 Camino Verde Walnut Creek CA 94596) Pellissier Robert O. (3990 Salvador Ct. Pleasanton CA 94566) Johnson Kenneth W. (4078 Laguna Way Palo Alto CA 94306), Method and apparatus for detecting gas.
  10. Rush William F. (Tinley Park IL) Huebler James E. (Brookfield IL), Multi-frequency photo-acoustic detector.
  11. Ophoff Paul-Arthur (Wrth DEX) Weinel Johann (Karlsruhe DEX), Nondispersive infrared gas analyzer.
  12. Fertig Glenn H. (Natrona Heights PA), Photo-acoustic detector.
  13. Kitamori, Takehiko; Fujii, Masaaki; Sawada, Tsuguo, Photoacoustic analyzer.
  14. Nexo Sten A. (Birkerod DKX) Christensen Jrgen (Birkerod DKX) Jorgensen Ib E. (Copenhagen DKX), Photoacoustic gas analyzer.
  15. Watanabe Atsuo (Kawasaki JPX) Uno Masahiro (Kawasaki JPX), Photoacoustic spectrometer with analysis-signal enhancement.
  16. Kreuzer Lloyd B. (San Francisco CA), Retention time chromatograph employing an IR absorption spectrographic detector.

이 특허를 인용한 특허 (29)

  1. Tobias, Peter, Apparatus and method for using the speed of sound in photoacoustic gas sensor measurements.
  2. Cole, Barrett E.; Marta, Terry, Beam intensity detection in a cavity ring down sensor.
  3. Fritz, Bernard, Enhanced cavity for a photoacoustic gas sensor.
  4. Barrett E. Cole ; Christopher J. Zins, Flexible high performance microbolometer detector material fabricated via controlled ion beam sputter deposition process.
  5. Cole Barrett E. ; Zins Christopher J., Flexible high performance microbolometer detector material fabricated via controlled ion beam sputter deposition process.
  6. Cole Barrett E. ; Zins Christopher J., Flexible high performance microbolometer detector material fabricated via controlled ion beam sputter deposition process.
  7. Angster, Judit; Schmohl, Andreas; Miklos, Andras, Gas detector having an acoustic measuring cell and selectively adsorbing surface.
  8. Yoon,Chang No; Yoon,Hyoung No; Chi,Myung Whan; Han,Min Su, Gas identification device.
  9. Lowney, Donnacha; McNally, Patrick; Reader, Alec, Method and apparatus for analysis of semiconductor materials using photoacoustic spectroscopy techniques.
  10. Youngner, Daniel; Lust, Lisa, Method and apparatus for measuring gas concentrations.
  11. Miklos, Andras; Angster, Judit, Method and device for measuring a photoacoustic signal with computer-assisted evaluation.
  12. Crane, Robert Anthony, Method of identifying and detecting the concentrations of multiple species by means of a spectrophone.
  13. Han, Yong, Multi-channel aerosol scattering absorption measuring instrument.
  14. Cole, Barrett E.; Marta, Terry; Cox, James Allen; Nusseibeh, Fouad, Multiple wavelength cavity ring down gas sensor.
  15. Baraket,Mourad; Gerber,Urs; Ruffiner,Olivier; Feltre,Mauro, Optoacoustic gas sensor.
  16. Forster,Martin; Nebiker,Peter, Optoacoustic measuring arrangement and use thereof.
  17. Fritz, Bernard S.; Marcus, Matthew S., Photoacoustic cell incorporating a quantum dot substrate.
  18. Miklos, Andras; Angster, Judit, Photoacoustic detector with two beam paths for excitation light.
  19. Nicoletti, Sergio; Andreucci, Philippe; Brun, Mickaël; Gidon, Serge; Marcadet, Xavier; Carras, Mathieu, Photoacoustic gas detector.
  20. Arnott, William Patrick; Moosmuller, Hans; Walker, John W., Photoacoustic instrument for measuring particles in a gas.
  21. Autrey S. Thomas ; Posakony Gerald J. ; Amonette James E. ; Foster-Mills Nancy S., Photoacoustic method for measuring concentration of chemical species.
  22. Fritz, Bernard S.; Marcus, Matthew S., Photoacoustic sensor.
  23. Lust, Lisa, Photoacoustic sensor with mirror.
  24. Fritz, Bernard E.; Marcus, Matthew S., Photoacoustic spectroscopy system.
  25. Hocker, G. Benjamin, Programmable diffraction grating sensor.
  26. Hochbrueckner Kenneth, Propane detector system.
  27. Dehe, Alfons; Kolb, Stefan; Theuss, Horst; Meinhold, Dirk, Semiconductor device for emitting frequency-adjusted infrared light.
  28. Crane, Robert A., Spectrophone assembly for identifying and detecting multiple species.
  29. Michael J. Berry, System and method for detection of a biological condition.
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