JP2006220625A - 赤外線式ガス検知装置 - Google Patents
赤外線式ガス検知装置 Download PDFInfo
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- JP2006220625A JP2006220625A JP2005036711A JP2005036711A JP2006220625A JP 2006220625 A JP2006220625 A JP 2006220625A JP 2005036711 A JP2005036711 A JP 2005036711A JP 2005036711 A JP2005036711 A JP 2005036711A JP 2006220625 A JP2006220625 A JP 2006220625A
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- 239000004065 semiconductor Substances 0.000 claims abstract description 25
- 238000010521 absorption reaction Methods 0.000 claims abstract description 12
- 230000003287 optical effect Effects 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims description 75
- 230000005855 radiation Effects 0.000 claims description 30
- 238000005259 measurement Methods 0.000 claims description 8
- 239000007789 gas Substances 0.000 description 91
- 238000001228 spectrum Methods 0.000 description 4
- 230000005457 Black-body radiation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- 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
- G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
- G01N21/3151—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths using two sources of radiation of different wavelengths
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- 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
- G01N2021/3129—Determining multicomponents by multiwavelength light
- G01N2021/3133—Determining multicomponents by multiwavelength light with selection of wavelengths before the sample
-
- 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
- G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
- G01N2021/3181—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths using LEDs
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- 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
- G01N2021/396—Type of laser source
- G01N2021/399—Diode laser
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/062—LED's
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- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Toxicology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
【解決手段】赤外線を放射する赤外線光源10と、赤外線を感知する赤外線検出素子20とを、同一パッケージ30内に備え、赤外線光源10から赤外線検出素子20に到る赤外線の光路内に、被測定ガスが導入され、被測定ガスによる赤外線の吸収度合いを赤外線検出素子20により検出して、被測定ガスの濃度を検知する赤外線式ガス検知装置100であって、赤外線光源10として、発光ダイオード(LED)または半導体レーザを用いた赤外線式ガス検知装置100とする。
【選択図】 図1
Description
3,10〜12 (赤外線)光源
5,20 赤外線検出素子
11a,11b,12a,12b LED(または半導体レーザ)
30 パッケージ
Claims (8)
- 赤外線を放射する赤外線光源と、赤外線を感知する赤外線検出素子とを、同一パッケージ内に備え、
前記赤外線光源から前記赤外線検出素子に到る赤外線の光路内に、被測定ガスが導入され、
前記被測定ガスによる赤外線の吸収度合いを前記赤外線検出素子により検出して、前記被測定ガスの濃度を検知する赤外線式ガス検知装置であって、
前記赤外線光源として、発光ダイオード(LED)または半導体レーザを用いることを特徴とする赤外線式ガス検知装置。 - 前記赤外線式ガス検知装置が、赤外線の波長選択フィルタを除去してなることを特徴とする請求項1に記載の赤外線式ガス検知装置。
- 前記赤外線式ガス検知装置が、一種類の被測定ガスのみを検知することを特徴とする請求項1または2に記載の赤外線式ガス検知装置。
- 前記赤外線光源が、複数の赤外線放射波長ピークを有することを特徴とする請求項1乃至3のいずれか一項に記載の赤外線式ガス検知装置。
- 前記複数の赤外線放射波長ピークのうち、少なくとも一つの赤外線放射波長ピークが、前記被測定ガスにより吸収されないリファレンス光として用いられることを特徴とする請求項4に記載の赤外線式ガス検知装置。
- 前記複数の赤外線放射波長ピークを有する赤外線光源が、一つの光源としてパッケージ化されてなることを特徴とする請求項4または5に記載の赤外線式ガス検知装置。
- 前記赤外線光源への印加電圧が時分割され、前記複数の赤外線放射波長ピークが時分割されて放射されることを特徴とする請求項4乃至6のいずれか一項に記載の赤外線式ガス検知装置。
- 前記被測定ガスが、可燃性ガスであることを特徴とする請求項1乃至7のいずれか一項に記載の赤外線式ガス検知装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005036711A JP2006220625A (ja) | 2005-02-14 | 2005-02-14 | 赤外線式ガス検知装置 |
US11/334,458 US20060180763A1 (en) | 2005-02-14 | 2006-01-19 | Gas detector that uses infrared light and method of detecting gas concentration |
DE200610004005 DE102006004005A1 (de) | 2005-02-14 | 2006-01-27 | Infrarot-Gasdetektor und Verfahren zur Erfassung einer Gaskonzentration |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005036711A JP2006220625A (ja) | 2005-02-14 | 2005-02-14 | 赤外線式ガス検知装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2006220625A true JP2006220625A (ja) | 2006-08-24 |
Family
ID=36776366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005036711A Pending JP2006220625A (ja) | 2005-02-14 | 2005-02-14 | 赤外線式ガス検知装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20060180763A1 (ja) |
JP (1) | JP2006220625A (ja) |
DE (1) | DE102006004005A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016191622A (ja) * | 2015-03-31 | 2016-11-10 | 日立造船株式会社 | 破砕機の可燃性ガス検出方法および破砕機の防爆装置 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2102633B1 (en) * | 2006-12-22 | 2018-02-14 | Photonic Innovations Limited | Gas detector |
CN101105449B (zh) * | 2007-08-08 | 2010-09-15 | 天地科技股份有限公司 | 双光源双敏感元件红外多气体检测传感器 |
US8186201B2 (en) * | 2008-08-26 | 2012-05-29 | Honeywell International Inc. | Multi-sensor gas detectors |
EP2538201A1 (en) * | 2010-02-16 | 2012-12-26 | Hamamatsu Photonics K.K. | Gas concentration calculation device, gas concentration measurement module, and light detector |
CN103712953B (zh) * | 2014-01-13 | 2015-09-23 | 南京顺泰科技有限公司 | 一种六氟化硫气体组分分析仪 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58143242A (ja) * | 1982-02-19 | 1983-08-25 | Fujitsu Ltd | 漏洩ガス検出装置 |
JPS63308539A (ja) * | 1987-06-10 | 1988-12-15 | Toho Gas Co Ltd | 超小型ガスセンサ |
JPH06140720A (ja) * | 1991-01-08 | 1994-05-20 | Nec Corp | 半導体レーザ装置 |
JPH0989773A (ja) * | 1995-09-20 | 1997-04-04 | Horiba Ltd | 赤外線ガス分析計 |
JP2001228086A (ja) * | 2000-02-18 | 2001-08-24 | Yokogawa Electric Corp | 赤外線ガス分析計 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT391208B (de) * | 1985-12-09 | 1990-09-10 | Avl Verbrennungskraft Messtech | Verfahren zur quantitativen messung von kohlenwasserstoffen |
DE4434814A1 (de) * | 1994-09-29 | 1996-04-04 | Microparts Gmbh | Infrarotspektrometrischer Sensor für Gase |
DE19717145C2 (de) * | 1997-04-23 | 1999-06-02 | Siemens Ag | Verfahren zur selektiven Detektion von Gasen und Gassensor zu dessen Durchführung |
US6545278B1 (en) * | 1999-04-23 | 2003-04-08 | Delphian Corporation | Gas discriminating gas detector system and method |
FR2819311B1 (fr) * | 2001-01-05 | 2003-06-13 | Commissariat Energie Atomique | Dispositif de mesure de concentration de gaz |
DE102004030855A1 (de) * | 2004-06-25 | 2006-01-12 | Tyco Electronics Raychem Gmbh | Verfahren zur Reduzierung von Kondenswasser bei Gassensoranordnungen |
-
2005
- 2005-02-14 JP JP2005036711A patent/JP2006220625A/ja active Pending
-
2006
- 2006-01-19 US US11/334,458 patent/US20060180763A1/en not_active Abandoned
- 2006-01-27 DE DE200610004005 patent/DE102006004005A1/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58143242A (ja) * | 1982-02-19 | 1983-08-25 | Fujitsu Ltd | 漏洩ガス検出装置 |
JPS63308539A (ja) * | 1987-06-10 | 1988-12-15 | Toho Gas Co Ltd | 超小型ガスセンサ |
JPH06140720A (ja) * | 1991-01-08 | 1994-05-20 | Nec Corp | 半導体レーザ装置 |
JPH0989773A (ja) * | 1995-09-20 | 1997-04-04 | Horiba Ltd | 赤外線ガス分析計 |
JP2001228086A (ja) * | 2000-02-18 | 2001-08-24 | Yokogawa Electric Corp | 赤外線ガス分析計 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016191622A (ja) * | 2015-03-31 | 2016-11-10 | 日立造船株式会社 | 破砕機の可燃性ガス検出方法および破砕機の防爆装置 |
Also Published As
Publication number | Publication date |
---|---|
DE102006004005A1 (de) | 2006-08-24 |
US20060180763A1 (en) | 2006-08-17 |
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