WO2013135611A3 - Vorrichtung und verfahren zum messen eines zielgases - Google Patents

Vorrichtung und verfahren zum messen eines zielgases Download PDF

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Publication number
WO2013135611A3
WO2013135611A3 PCT/EP2013/054837 EP2013054837W WO2013135611A3 WO 2013135611 A3 WO2013135611 A3 WO 2013135611A3 EP 2013054837 W EP2013054837 W EP 2013054837W WO 2013135611 A3 WO2013135611 A3 WO 2013135611A3
Authority
WO
WIPO (PCT)
Prior art keywords
target gas
excitation
measuring
target
laser beam
Prior art date
Application number
PCT/EP2013/054837
Other languages
English (en)
French (fr)
Other versions
WO2013135611A4 (de
WO2013135611A2 (de
Inventor
Johannes Herbst
Armin Lambrecht
Original Assignee
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
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 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. filed Critical Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
Publication of WO2013135611A2 publication Critical patent/WO2013135611A2/de
Publication of WO2013135611A3 publication Critical patent/WO2013135611A3/de
Publication of WO2013135611A4 publication Critical patent/WO2013135611A4/de

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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
    • G01N21/171—Systems in which incident light is modified in accordance with the properties of the material investigated with calorimetric detection, e.g. with thermal lens detection
    • 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
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/10—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/26—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting optical wave
    • 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
    • G01N21/171—Systems in which incident light is modified in accordance with the properties of the material investigated with calorimetric detection, e.g. with thermal lens detection
    • G01N2021/1714—Photothermal radiometry with measurement of emission

Abstract

Die Erfindung betrifft eine Vorrichtung und ein Verfahren zum Messen eines Zielgases, mit einem Anregungslaser 1 zur Emission eines infraroten Laserstrahls 2, der auf einen Zielort lenkbar ist, an dem sich das Zielgas 3 befinden kann, und dessen Wellenlänge auf eine Anregungswellenlänge einer Absorptionslinie des Zielgases 3 abstimmbar ist, die durch Anregung eines Zustandes des Rotationsschwingungsspektrums des Zielgases zustande kommt, mit einer Detektionsanordnung mit einem Messdetektor 5 zur Detektion einer von dem Zielort ausgehenden, durch das Zielgas 3 beeinflussbaren Strahlung, und mit einer Analyseeinrichtung 6 zur Analyse eines Ausgangssignals des Messdetektors 5 in Abhängigkeit von dem von dem Anregungslaser 1 emittierten Laserstrahl 2. Ein einfacherer Aufbau und eine gute Messempfindlichkeit werden dadurch erzielt, dass der Anregungslaser 1 so ausgebildet ist, dass mit dem infraroten Laserstrahl 2 eine Absorptionslinie des Zielgases 3 derart anregbar ist, dass die Anregung zu einer Temperaturerhöhung des Zielgases 3 führt, und dass die Detektionsanordnung zum Messen einer durch die Temperaturerhöhung beeinflussbare Eigenschaft des Zielgases 3 ausgestattet ist.
PCT/EP2013/054837 2012-03-14 2013-03-11 Vorrichtung und verfahren zum messen eines zielgases WO2013135611A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201210004977 DE102012004977B3 (de) 2012-03-14 2012-03-14 Vorrichtung und Verfahren zum Messen eines Zielgases
DE102012004977.3 2012-03-14

Publications (3)

Publication Number Publication Date
WO2013135611A2 WO2013135611A2 (de) 2013-09-19
WO2013135611A3 true WO2013135611A3 (de) 2013-11-07
WO2013135611A4 WO2013135611A4 (de) 2013-12-19

Family

ID=48051534

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/054837 WO2013135611A2 (de) 2012-03-14 2013-03-11 Vorrichtung und verfahren zum messen eines zielgases

Country Status (2)

Country Link
DE (1) DE102012004977B3 (de)
WO (1) WO2013135611A2 (de)

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Publication number Priority date Publication date Assignee Title
DE102015201337A1 (de) * 2015-01-27 2016-07-28 Deutsches Zentrum für Luft- und Raumfahrt e.V. IR-basierte Geschwindigkeitsfeldbestimmung
CN107024432A (zh) * 2017-03-15 2017-08-08 金华职业技术学院 一种用于探测高腐蚀性气体的简易光声探测器
CN108107022A (zh) * 2018-01-18 2018-06-01 中国科学院西安光学精密机械研究所 一种非接触式海洋溶解高温气体监测仪和监测方法
CN108414469B (zh) * 2018-03-27 2023-10-27 安徽中科华仪科技有限公司 基于tdlas扫描收发一体式机动车尾气遥感测量装置及方法
GB2586075B (en) * 2019-08-02 2021-07-28 Qlm Tech Ltd Rapidly tuneable diode lidar

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US4496839A (en) * 1982-11-03 1985-01-29 Spectral Sciences Incorporated System and method for remote detection and identification of chemical species by laser initiated nonresonant infrared spectroscopy
US20020166969A1 (en) * 2001-03-14 2002-11-14 Mau-Song Chou Remote trace gas detection and analysis

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US4868768A (en) * 1986-09-17 1989-09-19 The United States Of America As Represented By The United States Department Of Energy Optical absorption measurement system
US5892140A (en) * 1997-04-30 1999-04-06 Honeywell Inc. Micromachined inferential opto-thermal gas sensor
WO2002061402A1 (fr) * 2001-01-30 2002-08-08 Anritsu Corporation Detecteur de gaz du type a diffraction spectrale a absorption laser, et procede de detection de gaz par diffraction spectrale a absorption laser
US20100296083A1 (en) * 2008-02-12 2010-11-25 Pranalytica, Inc. Detection and identification of solid matter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4496839A (en) * 1982-11-03 1985-01-29 Spectral Sciences Incorporated System and method for remote detection and identification of chemical species by laser initiated nonresonant infrared spectroscopy
US20020166969A1 (en) * 2001-03-14 2002-11-14 Mau-Song Chou Remote trace gas detection and analysis

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
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FARAHI R H ET AL: "Pump probe photothermal spectroscopy using quantum cascade lasers", JOURNAL OF PHYSICS D. APPLIED PHYSICS, IOP PUBLISHING, BRISTOL, GB, vol. 45, no. 12, 6 March 2012 (2012-03-06), pages 125101, XP020219064, ISSN: 0022-3727, DOI: 10.1088/0022-3727/45/12/125101 *
FURSTENBERG R ET AL: "Stand-off detection of trace explosives via resonant infrared photothermal imaging", APPLIED PHYSICS LETTERS, AIP, AMERICAN INSTITUTE OF PHYSICS, MELVILLE, NY, US, vol. 93, no. 22, 4 December 2008 (2008-12-04), pages 224103 - 224103, XP012112742, ISSN: 0003-6951, DOI: 10.1063/1.3027461 *
SHUICHI. KAWASAKI ET AL: "Thermal lens spectrophotometry using a tunable infrared laser generated by a stimulated Raman effect", ANALYTICAL CHEMISTRY, vol. 59, no. 3, 1 February 1987 (1987-02-01), pages 523 - 525, XP055068561, ISSN: 0003-2700, DOI: 10.1021/ac00130a033 *

Also Published As

Publication number Publication date
WO2013135611A4 (de) 2013-12-19
DE102012004977B3 (de) 2013-04-25
WO2013135611A2 (de) 2013-09-19

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