DE69102425D1 - Verfahren und gerät zur übertragung eines akustischen signals in einer photoakustischen zelle. - Google Patents

Verfahren und gerät zur übertragung eines akustischen signals in einer photoakustischen zelle.

Info

Publication number
DE69102425D1
DE69102425D1 DE69102425T DE69102425T DE69102425D1 DE 69102425 D1 DE69102425 D1 DE 69102425D1 DE 69102425 T DE69102425 T DE 69102425T DE 69102425 T DE69102425 T DE 69102425T DE 69102425 D1 DE69102425 D1 DE 69102425D1
Authority
DE
Germany
Prior art keywords
microphone
substance
acoustic signal
pct
waveguide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69102425T
Other languages
English (en)
Other versions
DE69102425T2 (de
Inventor
Mads Hammerich
Jes Henningsen
Ari Olafsson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FLS Airloq AS
Original Assignee
FLS Airloq AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FLS Airloq AS filed Critical FLS Airloq AS
Publication of DE69102425D1 publication Critical patent/DE69102425D1/de
Application granted granted Critical
Publication of DE69102425T2 publication Critical patent/DE69102425T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/1702—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/11—Analysing solids by measuring attenuation of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G01N29/2418—Probes using optoacoustic interaction with the material, e.g. laser radiation, photoacoustics
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G01N29/2462—Probes with waveguides, e.g. SAW devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/34—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
    • G01N29/348—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with frequency characteristics, e.g. single frequency signals, chirp signals
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/22—Methods or devices for transmitting, conducting or directing sound for conducting sound through hollow pipes, e.g. speaking tubes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/1702—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
    • G01N2021/1704—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids in gases
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/021—Gases
    • G01N2291/0217—Smoke, combustion gases
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/101—Number of transducers one transducer

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Optics & Photonics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Devices For Supply Of Signal Current (AREA)
DE69102425T 1990-03-05 1991-03-04 Verfahren und gerät zur übertragung eines akustischen signals in einer photoakustischen zelle. Expired - Fee Related DE69102425T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK056290A DK163537C (da) 1990-03-05 1990-03-05 Fremgangsmaade og apparat til overfoersel af et akustisk signal i en fotoakustisk celle
PCT/DK1991/000061 WO1991014176A1 (en) 1990-03-05 1991-03-04 Method and apparatus for the transmission of an acoustic signal in a photoacoustic cell

Publications (2)

Publication Number Publication Date
DE69102425D1 true DE69102425D1 (de) 1994-07-14
DE69102425T2 DE69102425T2 (de) 1994-09-29

Family

ID=8094945

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69102425T Expired - Fee Related DE69102425T2 (de) 1990-03-05 1991-03-04 Verfahren und gerät zur übertragung eines akustischen signals in einer photoakustischen zelle.

Country Status (7)

Country Link
US (1) US5339674A (de)
EP (1) EP0518993B1 (de)
JP (1) JPH05508007A (de)
AT (1) ATE107029T1 (de)
DE (1) DE69102425T2 (de)
DK (1) DK163537C (de)
WO (1) WO1991014176A1 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH685889A5 (de) * 1994-09-07 1995-10-31 Scr Crevoiserat S A Verfahren und Vorrichtung zur Bestimmung von Gaskonzentrationen in einem Gasgemisch
US5900533A (en) 1995-08-03 1999-05-04 Trw Inc. System and method for isotope ratio analysis and gas detection by photoacoustics
DE59510901D1 (de) * 1995-09-04 2004-06-17 Siemens Building Tech Ag Photoakustischer Gassensor und dessen Verwendung
DE19744500A1 (de) * 1997-10-09 1999-04-15 Abb Research Ltd Photoakustische Freifall-Messzelle
US6236455B1 (en) * 1998-06-26 2001-05-22 Battelle Memorial Institute Photoacoustic spectroscopy sample cells and methods of photoacoustic spectroscopy
US6363772B1 (en) * 1999-12-10 2002-04-02 Quadrivium, L.L.C. System and method for detection of a biological condition
US6662627B2 (en) 2001-06-22 2003-12-16 Desert Research Institute Photoacoustic instrument for measuring particles in a gas
EP1386690B1 (de) * 2002-08-01 2008-05-28 Trumpf Werkzeugmaschinen GmbH + Co. KG Laserbearbeitungsmaschine
DE10318786B4 (de) * 2003-04-25 2006-03-09 Nattkemper, Andreas, Dr.-Ing. FTIR-Messzelle zur Analyse aggressiver Gase
DE102004034832B4 (de) * 2004-07-19 2014-05-22 Gerhart Schroff Verfahren und Anordnung zur Gasanalyse
US7710000B2 (en) 2006-08-04 2010-05-04 Schlumberger Technology Corporation Erosion and wear resistant sonoelectrochemical probe
US7804598B2 (en) * 2006-08-04 2010-09-28 Schlumberger Technology Corportion High power acoustic resonator with integrated optical interfacial elements
EP1998161A1 (de) * 2007-05-29 2008-12-03 The Technical University of Denmark (DTU) Akustische Resonatorzelle zur spektroskopischen Analyse von Stoffen in einem Fluid
DE102012008102B3 (de) * 2012-04-25 2013-08-01 Testo Ag Messvorrichtung und Messverfahren
GB2511327A (en) * 2013-02-28 2014-09-03 Scytronix Ltd Photoacoustic Chemical Detector
US9696283B1 (en) * 2016-10-11 2017-07-04 Aerodyne Research, Inc. Apparatus and methods for photoacoustic measurement of light absorption of particulate and gaseous species

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB788801A (en) * 1955-03-11 1958-01-08 Parsons C A & Co Ltd Improvements in or relating to sonic gas analysers
US3659452A (en) * 1969-04-22 1972-05-02 Perkin Elmer Corp Laser excited spectrophone
US3938365A (en) * 1973-11-29 1976-02-17 Massachusetts Institute Of Technology Detecting trace gaseous species acoustically in response to radiation from an intense light source
US3893771A (en) * 1974-08-22 1975-07-08 Diax Corp Laser absorption spectroscopy
JPS5436778A (en) * 1977-08-26 1979-03-17 Horiba Ltd Photosound effect type analyzer
US4277179A (en) * 1979-03-12 1981-07-07 The United States Of America As Represented By The Secretary Of The Army Resonant subcavity differential spectrophone
US4372149A (en) * 1980-11-17 1983-02-08 Zharov Vladimir P Laser-excited spectrophone
JPS59145957A (ja) * 1983-01-08 1984-08-21 Horiba Ltd 光音響型濃度測定装置
GB2148487B (en) * 1983-10-13 1987-01-14 Perkins Engines Group Apparatus for measuring smoke density
US4740086A (en) * 1984-02-07 1988-04-26 Oskar Oehler Apparatus for the photoacoustic detection of gases

Also Published As

Publication number Publication date
EP0518993A1 (de) 1992-12-23
WO1991014176A1 (en) 1991-09-19
JPH05508007A (ja) 1993-11-11
US5339674A (en) 1994-08-23
DK163537B (da) 1992-03-09
DK163537C (da) 1992-08-03
ATE107029T1 (de) 1994-06-15
EP0518993B1 (de) 1994-06-08
DK56290D0 (da) 1990-03-05
DE69102425T2 (de) 1994-09-29
DK56290A (da) 1991-09-06

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee