FI20116226A - METHOD AND APPARATUS FOR DETERMINING THE GAS CONCENTRATION - Google Patents

METHOD AND APPARATUS FOR DETERMINING THE GAS CONCENTRATION Download PDF

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Publication number
FI20116226A
FI20116226A FI20116226A FI20116226A FI20116226A FI 20116226 A FI20116226 A FI 20116226A FI 20116226 A FI20116226 A FI 20116226A FI 20116226 A FI20116226 A FI 20116226A FI 20116226 A FI20116226 A FI 20116226A
Authority
FI
Finland
Prior art keywords
volume
detector
scattered beams
guiding
gas concentration
Prior art date
Application number
FI20116226A
Other languages
Finnish (fi)
Swedish (sv)
Inventor
Jussi Ahokas
Mika Pettersson
Original Assignee
Jyvaeskylaen Yliopisto
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 Jyvaeskylaen Yliopisto filed Critical Jyvaeskylaen Yliopisto
Priority to FI20116226A priority Critical patent/FI20116226A/en
Priority to PCT/FI2012/051201 priority patent/WO2013079806A1/en
Publication of FI20116226A publication Critical patent/FI20116226A/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G01J3/44—Raman spectrometry; Scattering spectrometry ; Fluorescence spectrometry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G01J3/0208—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using focussing or collimating elements, e.g. lenses or mirrors; performing aberration correction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G01J3/0218—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using optical fibers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G01J3/0227—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using notch filters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0262—Constructional arrangements for removing stray light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/04—Slit arrangements slit adjustment
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/12—Generating the spectrum; Monochromators
    • G01J3/18—Generating the spectrum; Monochromators using diffraction elements, e.g. grating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G01J3/2823—Imaging spectrometer
    • 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
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/65—Raman scattering

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

A device (300, 400) for determining gas concentration of a volume (301 ) in a closed space non-invasively, comprises a laser emitting means (302) for emitting laser beam (306) into said volume (301 ) in order to produce rotational Raman scattering of at least one gas component to be determined within said volume (301 ). A first guiding means (309) is used for guiding scattered beams (307) from the volume (301 ) to a filter (305), which transmits essentially only bandwidth of the scattered beams (307) and not the bandwidth of the laser (302). A detector (311) is used for detecting intensities of the scattered beams (307). In addition a second guiding means (308) is used before the detector (311) for guiding and spreading the scattered beams (307) onto the surface of said detector (311) so that different wavelengths of scattered beams (307) are guided onto different locations on the surface of said detector (311), where each of said different wavelengths correspond to a certain gas component of the volume (301) detected.
FI20116226A 2011-12-02 2011-12-02 METHOD AND APPARATUS FOR DETERMINING THE GAS CONCENTRATION FI20116226A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI20116226A FI20116226A (en) 2011-12-02 2011-12-02 METHOD AND APPARATUS FOR DETERMINING THE GAS CONCENTRATION
PCT/FI2012/051201 WO2013079806A1 (en) 2011-12-02 2012-12-03 Method and device for determining gas concentration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20116226A FI20116226A (en) 2011-12-02 2011-12-02 METHOD AND APPARATUS FOR DETERMINING THE GAS CONCENTRATION

Publications (1)

Publication Number Publication Date
FI20116226A true FI20116226A (en) 2013-06-03

Family

ID=48534739

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20116226A FI20116226A (en) 2011-12-02 2011-12-02 METHOD AND APPARATUS FOR DETERMINING THE GAS CONCENTRATION

Country Status (2)

Country Link
FI (1) FI20116226A (en)
WO (1) WO2013079806A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014014414B4 (en) * 2014-09-29 2024-08-01 Leibniz-Institut für Photonische Technologien e. V. Method and arrangement for hydrogen sensing
WO2017203061A1 (en) 2016-05-27 2017-11-30 Gea Food Solutions Germany Gmbh Method and packaging machine for determining the concentration of gas in a packaging
CN107764766A (en) * 2017-12-08 2018-03-06 山东商业职业技术学院 A kind of chilled aquatic products escaping gas analyzer
CN110658603B (en) * 2018-06-29 2021-08-06 台湾超微光学股份有限公司 Switching subassembly, optics front end combination device and spectrum appearance
JPWO2020075869A1 (en) * 2018-10-12 2021-09-02 英弘精機株式会社 Meteorological observation rider

Also Published As

Publication number Publication date
WO2013079806A1 (en) 2013-06-06

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