CA2219335A1 - Vehicle mounted gas detector - Google Patents

Vehicle mounted gas detector

Info

Publication number
CA2219335A1
CA2219335A1 CA002219335A CA2219335A CA2219335A1 CA 2219335 A1 CA2219335 A1 CA 2219335A1 CA 002219335 A CA002219335 A CA 002219335A CA 2219335 A CA2219335 A CA 2219335A CA 2219335 A1 CA2219335 A1 CA 2219335A1
Authority
CA
Canada
Prior art keywords
absorption cell
laser absorption
vehicle
exterior
carried
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.)
Granted
Application number
CA002219335A
Other languages
French (fr)
Other versions
CA2219335C (en
Inventor
John Tulip
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CA002219335A priority Critical patent/CA2219335C/en
Publication of CA2219335A1 publication Critical patent/CA2219335A1/en
Application granted granted Critical
Publication of CA2219335C publication Critical patent/CA2219335C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R99/00—Subject matter not provided for in other groups of this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D47/00—Equipment not otherwise provided for
    • 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
    • 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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
    • 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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
    • 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
    • G01N2021/1793—Remote sensing

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Optical Measuring Cells (AREA)

Abstract

A gas detector for use with a vehicle, for example a helicopter or motor vehicle, in which a laser absorption cell is carried on the exterior of the vehicle, and a laser transceiver and analyzer module is coupled to the laser absorption cell through light guides, for example optical fibers. The laser absorption cell preferably has the form of a Herriot cell, with opposed mirrors carried by a rigid frame, and with an open passageway for flow of air between the mirrors directly from the atmosphere through the laser absorption cell. Windows and/or a screen or other devices may be used to protect the mirrors from contamination. A method of detecting a target gas, comprising traversing a target area with a vehicle having an exterior; passing air through a laser absorption cell carried on the exterior of the vehicle; directing light through the laser absorption cell; and analyzing light that has passed through the laser absorption cell for a signal indicative of the presence of the target gas.
CA002219335A 1997-10-24 1997-10-24 Vehicle mounted gas detector Expired - Lifetime CA2219335C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002219335A CA2219335C (en) 1997-10-24 1997-10-24 Vehicle mounted gas detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002219335A CA2219335C (en) 1997-10-24 1997-10-24 Vehicle mounted gas detector

Publications (2)

Publication Number Publication Date
CA2219335A1 true CA2219335A1 (en) 1997-11-24
CA2219335C CA2219335C (en) 2009-06-09

Family

ID=4161690

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002219335A Expired - Lifetime CA2219335C (en) 1997-10-24 1997-10-24 Vehicle mounted gas detector

Country Status (1)

Country Link
CA (1) CA2219335C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6750467B2 (en) 2002-05-14 2004-06-15 John Tulip Vehicle mounted gas detector
US8013303B2 (en) 2005-12-01 2011-09-06 Pergam-Suisse Ag Mobile remote detection of fluids by a laser
US8294899B2 (en) 2009-10-06 2012-10-23 Golder Associates Ltd. Mapping concentrations of airborne matter
CN111855579A (en) * 2019-04-28 2020-10-30 核工业理化工程研究院 Alkali metal atom vapor absorption cell and spectral measurement method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9759597B2 (en) 2013-02-21 2017-09-12 Golder Associates Ltd. Methods for calibrating a fugitive emission rate measurement

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6750467B2 (en) 2002-05-14 2004-06-15 John Tulip Vehicle mounted gas detector
US8013303B2 (en) 2005-12-01 2011-09-06 Pergam-Suisse Ag Mobile remote detection of fluids by a laser
US8294899B2 (en) 2009-10-06 2012-10-23 Golder Associates Ltd. Mapping concentrations of airborne matter
CN111855579A (en) * 2019-04-28 2020-10-30 核工业理化工程研究院 Alkali metal atom vapor absorption cell and spectral measurement method thereof
CN111855579B (en) * 2019-04-28 2024-06-11 核工业理化工程研究院 Alkali metal atom vapor absorption tank and spectrum measurement method thereof

Also Published As

Publication number Publication date
CA2219335C (en) 2009-06-09

Similar Documents

Publication Publication Date Title
CA1225718A (en) Infra red absorption gas detector
CN207396336U (en) Light path detects motor vehicle tail gas unit
US5923035A (en) Infrared absorption measuring device
EP1773493B1 (en) Microfluidic arrangement for microfluidic optical detection
US6750467B2 (en) Vehicle mounted gas detector
CA2014874A1 (en) Method and arrangement for measuring the optical absorptions of gaseous mixtures
RU2393125C2 (en) Cladding glass
EP0226855B1 (en) Absorption analysis method
US3826577A (en) Gas analyzing apparatus
CA2219335A1 (en) Vehicle mounted gas detector
US5091649A (en) Removal of gases disturbing the measurements of a gas detector
GB2329707A (en) Infra-red absorption measurement
JPH1082740A (en) Infrared gas analyzer
CA2250688A1 (en) Fiber-optic sensing device
US5563420A (en) Integrated ultraviolet and infrared source with minimal visible radiation
CA2231526A1 (en) Method of determining dew point and a suitable device
CN209247619U (en) A kind of multi-beam laser multi-lane motor vehicle tail gas remote sensing detection system
US6441387B1 (en) Biological aerosol trigger (BAT)
US5925881A (en) Infrared absorption measuring cell
CA1122432A (en) Resonant subcavity differential spectrophone
US4941742A (en) Arrangement for measuring the concentration of gaseous and vaporous components of a fluid mixture
CA2198889A1 (en) Gas analyzer cuvettes
CA2386268C (en) Vehicle mounted gas detector
EP1063518A3 (en) Device for analyzing a gas sample with infrared absorption
JPH0875844A (en) Dustproof mechanism

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20171024