JP2013545094A - 光吸収ガスセンサ内のledから光パルスを生成するための装置と方法 - Google Patents
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- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/59—Transmissivity
- G01N21/61—Non-dispersive gas analysers
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- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
- G01N21/274—Calibration, base line adjustment, drift correction
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- 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
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- G01J11/00—Measuring the characteristics of individual optical pulses or of optical pulse trains
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N2201/12—Circuits of general importance; Signal processing
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Abstract
Description
Claims (25)
- 検体ガスを検出するための光吸収ガスセンサを動作させる方法であって、前記センサは、
ガス試料収容室と、
少なくとも1つの発光ダイオード(LED)と、
自らにより受信される光の量に敏感な出力信号を有する光センサと
を含み、前記方法は、
複数の電流パルスを前記少なくとも1つのLEDに通すことにより複数の光パルスを生成する工程と、
前記少なくとも1つのLEDを通る電流を各前記パルスの期間中に複数回測定する工程と、
前記光センサ出力信号と前記少なくとも1つのLEDを通る前記電流の複数の測定結果の両方を考慮して前記ガス試料収容室内の検体ガスの濃度を示す補償信号を生成する工程と、を含む、方法。 - 前記光センサ出力信号はまた、各前記パルスの期間中に複数回測定される、請求項1に記載の方法。
- 前記センサ出力信号の前記複数の測定結果もまた前記補償信号を生成する際に考慮される、請求項2に記載の方法。
- 前記少なくとも1つのLEDを通る前記電流と前記光センサ出力信号は前記複数のパルス期間中に交互に測定される、請求項1乃至3のいずれか一項に記載の方法。
- 前記少なくとも1つのLEDを通る前記電流はアナログ・ディジタル変換器(ADC)を使用して測定される、請求項1乃至4のいずれか一項に記載の方法。
- 前記少なくとも1つのLEDを通る前記電流と前記光センサ出力信号を測定するためにADCが使用される、請求項1乃至5のいずれか一項に記載の方法。
- 前記少なくとも1つのLEDの温度が測定され、前記測定された温度は前記補償信号を生成する際に考慮される、請求項1乃至6のいずれか一項に記載の方法。
- 前記少なくとも1つのLEDを通る前記測定された電流と前記光センサ出力信号との比をパルス期間中に少なくとも一回計算する工程を含む、請求項1乃至7のいずれか一項に記載の方法。
- 前記少なくとも1つのLEDを通る前記測定された電流の複数の測定結果と前記光センサ出力信号の周波数領域解析を行う工程を含む、請求項1乃至8のいずれか一項に記載の方法。
- 既知の周波数を有するパルスを生成する工程と、
前記少なくとも1つのLEDを通る前記測定された電流のエネルギーおよび/または1つまたは複数の周波数帯内の前記光センサ出力信号に関係するパラメータを計算する工程と、を含む、請求項1乃至9のいずれか一項に記載の方法。 - 前記少なくとも1つのLEDを通る前記電流パルスは、インダクタへの電流源をスイッチオフし、電流を前記インダクタから前記少なくとも1つのLEDに向けることにより生成される、請求項1乃至10のいずれか一項に記載の方法。
- LED電流パルスの1つまたは複数の特性は過去のLED電流パルス期間中に行われた前記少なくとも1つのLEDを通る前記電流の測定結果の1つまたは複数に応じて選択される、請求項1乃至11のいずれか一項に記載の方法。
- 前記1つまたは複数の特性は、前記少なくとも1つのLEDに作動可能に接続されたインダクタへの電流の供給がスイッチ素子により制限される前に、前記スイッチ素子により前記インダクタに電流が供給される期間を決定することにより選択される、請求項121に記載の方法。
- LED電流パルスの1つまたは複数の特性は前記光センサ出力信号の1つまたは複数の測定結果に応じて選択される、請求項12または13に記載の方法。
- LED電流パルスの前記1つまたは複数の特性は前記少なくとも1つのLEDまたは前記光センサの測定特性を補償するように選択される、請求項12乃至14のいずれか一項に記載の方法。
- 前記少なくとも1つのLEDを通る前記電流は前記電流を抵抗器に通し前記抵抗器両端の電位差を測定することにより測定される、請求項1乃至15のいずれか一項に記載の方法。
- ガス試料収容室と、
少なくとも1つの発光ダイオード(LED)と、光センサにより受信される光の量に敏感な出力信号を有する光検出器と、
複数の電流パルスを少なくとも1つのLEDに通すことにより前記光吸収ガスセンサの測定モードにおいて複数の光パルスを生成するように構成されたLED制御回路と、
前記少なくとも1つのLEDを通る電流を各前記パルスの期間中に複数回測定するように構成された測定装置と、
前記光検知器出力信号と前記少なくとも1つのLEDを通る前記電流の複数の測定結果の両方を考慮して、前記ガス試料収容室内の検体ガスの濃度を示す補償信号を出力するように構成された補償モジュールと、を含む光吸収ガスセンサ。 - 各パルス期間中に前記光センサ出力信号を複数回測定する測定装置を含む、請求項17に記載の光吸収ガスセンサ。
- 前記少なくとも1つのLEDを通る前記電流と前記光センサ出力信号の両方を測定するADCを含む請求項17または18に記載の光吸収ガスセンサ。
- 前記光吸収ガスセンサはまた、1つまたは複数の温度センサを含み、前記補償モジュールは1つまたは複数の感知温度を考慮する、請求項17乃至19のいずれか一項に記載の光吸収ガスセンサ。
- 前記LED制御回路は、前記少なくとも1つのLEDを通る電流の前記測定結果の1つまたは複数および/または過去のLED電流パルス期間中に行われた前記光センサ出力信号の測定結果の1つまたは複数に応じて、前記少なくとも1つのLED制御回路により制御される前記LEDパルスの1つまたは複数の特性を決定するように構成される、請求項17乃至20のいずれか一項に記載の光吸収ガスセンサ。
- 前記LED制御回路は前記少なくとも1つのLEDに作動可能に接続されたインダクタを含み、
前記LED制御回路は、前記インダクタへ電流を供給し、次に前記インダクタへの電流の供給を制限し、これにより電流を前記少なくとも1つのLEDに流させるように動作可能である、請求項19乃至21のいずれか一項に記載の光吸収ガスセンサ。 - 前記LED制御回路は、前記少なくとも1つのLEDを通る電流の前記測定結果の1つまたは複数および/または過去のLED電流パルス期間中に行われた前記光センサの測定結果の1つまたは複数に応じて、前記インダクタに供給される前記電流および/または前記電流が前記インダクタに供給される前記期間を選択するように構成される、請求項22に記載の光吸収ガスセンサ。
- 前記少なくとも1つのLEDを通る前記測定された電流の複数の測定結果と前記光センサ出力信号とを解析するように動作可能な周波数領域解析モジュールを含む、請求項17乃至23のいずれか一項に記載の光吸収ガスセンサ。
- ガス試料収容室と、
少なくとも1つの発光ダイオード(LED)と、光センサにより受信される光の量に敏感な出力信号を有する光検出器と、
前記光吸収ガスセンサを請求項1乃至16のいずれか一項に記載の方法に従って動作させるように構成された制御回路と、を含む光吸収ガスセンサ。
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GBGB1018417.4A GB201018417D0 (en) | 2010-11-01 | 2010-11-01 | Apparatus and method for generating light pulses from LEDs in optical absorption gas sensors |
GB1018417.4 | 2010-11-01 | ||
PCT/GB2011/052111 WO2012059744A1 (en) | 2010-11-01 | 2011-10-28 | Apparatus and method for generating light pulses from leds in optical absorption gas sensors |
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CA (1) | CA2853963C (ja) |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11287372B2 (en) | 2020-03-16 | 2022-03-29 | Asahi Kasei Microdevices Corporation | Gas sensor module |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012007016B3 (de) | 2012-04-05 | 2013-10-10 | Dräger Safety AG & Co. KGaA | Optischer Gassensor |
US20150196239A1 (en) * | 2014-01-10 | 2015-07-16 | Covidien Lp | Method and apparatus for driving an emitter in a medical sensor |
CN103868877B (zh) * | 2014-03-14 | 2016-04-20 | 刘永平 | 一种红外气体传感器及检测方法 |
GB2533125A (en) * | 2014-12-10 | 2016-06-15 | Cambridge Respiratory Innovations Ltd | Capnometer |
EP3559637A1 (en) * | 2016-12-23 | 2019-10-30 | Eaton Intelligent Power Limited | Gas sensor |
EP3361232A1 (en) * | 2017-02-09 | 2018-08-15 | Koninklijke Philips N.V. | Optical particle sensor and sensing method |
US10118701B2 (en) * | 2017-03-08 | 2018-11-06 | B/E Aerospace, Inc. | Aircraft cabin LED lighting system and lighting assembly |
US11391476B2 (en) | 2018-07-23 | 2022-07-19 | Novinium, Inc. | Method of identifying burning by monitoring water level and combustion analytes |
US11231405B2 (en) | 2018-10-16 | 2022-01-25 | Novinium, Inc. | Calibrationless operation method |
US11231403B2 (en) | 2018-10-16 | 2022-01-25 | Novinium, Inc. | Methods of using dilution of a second type to calibrate one or more sensors |
US11208783B2 (en) * | 2018-10-16 | 2021-12-28 | Novintum, Inc. | Methods of using triangulation to locate a manhole event in a system of underground vaults |
US11054404B2 (en) | 2018-10-16 | 2021-07-06 | Novinium, Inc. | Methods of using dilution of a first type to calibrate one or more sensors |
US11035770B2 (en) | 2018-10-16 | 2021-06-15 | Novinium, Inc. | Methods of using component mass balance to evaluate manhole events |
WO2023172947A1 (en) * | 2022-03-09 | 2023-09-14 | Integrity Communications Solutions, Inc. | In-line gas sensor and sensing methods |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60210039A (ja) * | 1984-04-04 | 1985-10-22 | Hitachi Ltd | 光信号伝送装置 |
JPH0663032A (ja) * | 1992-06-15 | 1994-03-08 | Nippon Koden Corp | パルスオキシメータ用発光素子駆動装置 |
JPH07199640A (ja) * | 1993-12-27 | 1995-08-04 | Canon Inc | 濃度測定方法及び濃度測定装置及び画像形成装置 |
JP2002236053A (ja) * | 2001-02-07 | 2002-08-23 | Tamura Electric Works Ltd | 光検出装置 |
JP2005129598A (ja) * | 2003-10-21 | 2005-05-19 | Rohm Co Ltd | 発光制御装置および発光制御方法 |
WO2009019467A1 (en) * | 2007-08-06 | 2009-02-12 | Gas Sensing Solutions Limited | Temperature compensation for gas detection |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4071298A (en) * | 1974-06-27 | 1978-01-31 | Stanford Research Institute | Laser Raman/fluorescent device for analyzing airborne particles |
US4190836A (en) * | 1976-11-15 | 1980-02-26 | Hitachi, Ltd. | Dynamic drive circuit for light-emitting diodes |
US4166961A (en) * | 1978-03-22 | 1979-09-04 | Hoechst Aktiengesellschaft | Method and apparatus for detecting a blood leak in a hemodialysis system |
US4958926A (en) * | 1988-10-31 | 1990-09-25 | Reliance Comm/Tec Corporation | Closed loop control system for laser |
US5121337A (en) * | 1990-10-15 | 1992-06-09 | Exxon Research And Engineering Company | Method for correcting spectral data for data due to the spectral measurement process itself and estimating unknown property and/or composition data of a sample using such method |
US5261415A (en) | 1991-07-12 | 1993-11-16 | Ciba Corning Diagnostics Corp. | CO2 mainstream capnography sensor |
DE4216085A1 (de) * | 1992-05-15 | 1992-12-10 | Merkel Wolfgang | Infrarot-gasanalysator |
US5477853A (en) * | 1992-12-01 | 1995-12-26 | Somanetics Corporation | Temperature compensation method and apparatus for spectroscopic devices |
US6229315B1 (en) * | 1995-05-25 | 2001-05-08 | Stephen J. Briggs | Hand-held harmonics detector |
SE510549C2 (sv) | 1995-11-13 | 1999-05-31 | Hans Goeran Evald Martin | Gassensor |
GB9524414D0 (en) | 1995-11-29 | 1996-01-31 | Secr Defence | Low resistance contact semiconductor device |
US6002952A (en) * | 1997-04-14 | 1999-12-14 | Masimo Corporation | Signal processing apparatus and method |
GB9713365D0 (en) | 1997-06-25 | 1997-08-27 | Secr Defence | A laser device and transistor |
US6114700A (en) | 1998-03-31 | 2000-09-05 | Anatel Corporation | NDIR instrument |
US6591123B2 (en) * | 2000-08-31 | 2003-07-08 | Mallinckrodt Inc. | Oximeter sensor with digital memory recording sensor data |
US20040095184A1 (en) * | 2002-11-20 | 2004-05-20 | Stanley Electric Co., Ltd. | Driving circuit and driving method of light emitting device and optical communication apparatus |
US20070295912A1 (en) * | 2004-05-14 | 2007-12-27 | Target Systemelectronic Gmbh | Method for Stabilizing the Temperature Dependency of Light Emission of an Led |
US7081626B2 (en) | 2004-06-02 | 2006-07-25 | The Regents Of The University Of California | Apparatus and method for temperature correction and expanded count rate of inorganic scintillation detectors |
JP2006216849A (ja) * | 2005-02-04 | 2006-08-17 | Seiko Epson Corp | レーザ素子の駆動方法、レーザ素子の駆動回路、光通信装置、電子機器 |
KR100628718B1 (ko) * | 2005-02-26 | 2006-09-28 | 삼성전자주식회사 | Led구동장치 |
US7250806B2 (en) * | 2005-03-02 | 2007-07-31 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | Apparatus and method for generating an output signal that tracks the temperature coefficient of a light source |
US7400310B2 (en) * | 2005-11-28 | 2008-07-15 | Draeger Medical Systems, Inc. | Pulse signal drive circuit |
GB0602320D0 (en) | 2006-02-06 | 2006-03-15 | Gas Sensing Solutions Ltd | Domed gas sensor |
US7835004B2 (en) | 2007-07-03 | 2010-11-16 | Mine Safety Appliances Company | Gas sensors and methods of controlling light sources therefor |
US20090072749A1 (en) * | 2007-09-05 | 2009-03-19 | Saldana Michael R | Image Intensifier with Adjustable Figure of Merit |
CA2718171C (en) * | 2008-03-25 | 2016-03-22 | Toray Industries, Inc. | Epoxy resin composition, fiber-reinforced composite material, and method for producing the same |
-
2010
- 2010-11-01 GB GBGB1018417.4A patent/GB201018417D0/en not_active Ceased
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2011
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60210039A (ja) * | 1984-04-04 | 1985-10-22 | Hitachi Ltd | 光信号伝送装置 |
JPH0663032A (ja) * | 1992-06-15 | 1994-03-08 | Nippon Koden Corp | パルスオキシメータ用発光素子駆動装置 |
JPH07199640A (ja) * | 1993-12-27 | 1995-08-04 | Canon Inc | 濃度測定方法及び濃度測定装置及び画像形成装置 |
JP2002236053A (ja) * | 2001-02-07 | 2002-08-23 | Tamura Electric Works Ltd | 光検出装置 |
JP2005129598A (ja) * | 2003-10-21 | 2005-05-19 | Rohm Co Ltd | 発光制御装置および発光制御方法 |
WO2009019467A1 (en) * | 2007-08-06 | 2009-02-12 | Gas Sensing Solutions Limited | Temperature compensation for gas detection |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11287372B2 (en) | 2020-03-16 | 2022-03-29 | Asahi Kasei Microdevices Corporation | Gas sensor module |
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CN103299174A (zh) | 2013-09-11 |
CA2853963A1 (en) | 2012-05-10 |
EP2635894A1 (en) | 2013-09-11 |
EP2635894B1 (en) | 2020-01-15 |
GB201018417D0 (en) | 2010-12-15 |
US20130271751A1 (en) | 2013-10-17 |
CN103299174B (zh) | 2016-04-06 |
JP5934713B2 (ja) | 2016-06-15 |
CA2853963C (en) | 2018-08-21 |
US9410886B2 (en) | 2016-08-09 |
WO2012059744A1 (en) | 2012-05-10 |
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