JPH08512408A - センサ・システム - Google Patents
センサ・システムInfo
- Publication number
- JPH08512408A JPH08512408A JP7504389A JP50438995A JPH08512408A JP H08512408 A JPH08512408 A JP H08512408A JP 7504389 A JP7504389 A JP 7504389A JP 50438995 A JP50438995 A JP 50438995A JP H08512408 A JPH08512408 A JP H08512408A
- Authority
- JP
- Japan
- Prior art keywords
- sensor
- sensor system
- light
- arm
- temperature
- 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
Links
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
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- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- 241000408495 Iton Species 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/02055—Reduction or prevention of errors; Testing; Calibration
- G01B9/0207—Error reduction by correction of the measurement signal based on independently determined error sources, e.g. using a reference interferometer
- G01B9/02072—Error reduction by correction of the measurement signal based on independently determined error sources, e.g. using a reference interferometer by calibration or testing of interferometer
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/02015—Interferometers characterised by the beam path configuration
- G01B9/02023—Indirect probing of object, e.g. via influence on cavity or fibre
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/0209—Low-coherence interferometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35303—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using a reference fibre, e.g. interferometric devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K5/00—Measuring temperature based on the expansion or contraction of a material
- G01K5/48—Measuring temperature based on the expansion or contraction of a material the material being a solid
- G01K5/50—Measuring temperature based on the expansion or contraction of a material the material being a solid arranged for free expansion or contraction
- G01K5/52—Measuring temperature based on the expansion or contraction of a material the material being a solid arranged for free expansion or contraction with electrical conversion means for final indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B2290/00—Aspects of interferometers not specifically covered by any group under G01B9/02
- G01B2290/70—Using polarization in the interferometer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Instruments For Measurement Of Length By Optical Means (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.広帯域放射を受け取り広帯域放射から干渉図形を作成するように構成された センサ要素(24)および基準要素(28)と、センサ要素(24)と基準要素 (28)の間の光路差を変動させる手段(66)と、光路差の変化に応答する干 渉図形の変動から得られた光群遅延および光分散から温度データまたは歪みデー タ、あるいはその両方を導くように構成された信号処理手段(128)とを備え ることを特徴とする干渉手段を含むことを特徴とするセンサ・システム(10) 。 2.センサ要素(24)および基準要素(28)がそれぞれ、マッハ・ツェンダ ー干渉計構成(20、24、26、28、94、98、100、102、108 、114)のそれぞれのアームの少なくとも一部を形成することを特徴とする請 求の範囲第1項に記載のセンサ・システム(10)。 3.第1の検出器(124)と第2の検出器(84)とを備え、システム(10 )が、狭帯域放射を受け取り、第2の光検出器(84)によって検出し信号処理 手段(128)によって分析することができる第2の干渉図形を生成するように 構成され、 信号処理手段(128)が第2の干渉図形を分析することにより、干渉手段の光 路差の変化を較正することができることを特徴とする請求の範囲第2項に記載の センサ・システム(10)。 4.広帯域放射および狭帯域放射が、干渉計(20、24、26、28、94、 98、100、102、108、114)内で2つの対向方向へ同時に伝播する ように構成されることを特徴とする請求の範囲第3項に記載のセンサ・システム (10)。 5.センサ要素および基準要素がタンデム干渉計構成として構成されることを特 徴とする請求の範囲第1項に記載のセンサ・システム(200)。 6.センサ要素が、光入力端で、光を部分的に反射するように構成された鏡(2 16)によって境界付けられ、光ファイバ(210)の対向端部で、光をファイ バ(210)内に反射するように構成された鏡(220)によって境界付けられ たある長さの光ファイバ(210)を備えることを特徴とする請求の範囲第5項 に記載のセンサ・システム(200)。 7.センサ・システム(200)が、それぞれの異なる長さの複数のセンサ要素 を直列に含み、各要素が、その入力端部に、 光を部分的に反射するように構成された鏡(216、218)を含み、1つの要 素を透過した光が、直列接続された次の要素に入力され、直列接続された最後の 要素が、光をほぼ完全に反射するように構成された鏡(220)で終わることを 特徴とする請求の範囲第6項に記載のセンサ・システム。 8.鏡(216、218、220)が、光ファイバを裂き、ファイバ(210) の端面に反射コーティングを付与することによって形成されることを特徴とする 請求の範囲第5項から第7項のいずれか一項に記載のセンサ・システム(200 )。 9.基準要素が単一の干渉計(204)を備え、各センサ要素からの光が基準干 渉計(204)の方へ伝播する際に組み合わされることを特徴とする請求の範囲 第7項に記載のセンサ・システム(200)。 10.センサ・システム(200)が、複数の基準干渉計を含み、各基準干渉計 が、1つのセンサ要素から光を受け取ることができるように構成されることを特 徴とする請求の範囲第7項に記載のセンサ・システム(200)。 11.基準要素およびセンサ要素が、互いに取り外すことができ、他のセンサ要 素または基準要素に取り付けることができる ことを特徴とする請求の範囲第5項、第9項、または第10項に記載のセンサ・ システム(200)。 12.システム(10)が、初期状態でセンサ要素(24)上の歪みおよび温度 を判定し、かつシステムを試験する較正手段(30ないし44)を含むことを特 徴とする請求の範囲第1項または第5項に記載のセンサ・システム(10)。 13.較正手段が、熱的に絶縁された囲壁(34)に複数の熱電対(42)を含 み、センサ要素(24)が、囲壁(34)内に位置し、熱電対(42)が、セン サ要素(24)の温度を測定するように構成されることを特徴とする請求の範囲 第12項に記載のセンサ・システム(10)。 14.較正手段(30ないし44)が、センサ要素(24)上に位置するクラン プ(30、32)を含み、一方のクランプ(30)が、センサ要素(24)に既 知の歪みを課すマイクロメータ駆動並進ステージ(31)を備えることを特徴と する請求の範囲第12項または第13項に記載のセンサ・システム(10)。 15.較正手段(30ないし44)が、センサ要素(24)から取り外せること を特徴とする請求の範囲第12項から第14 項のいずれか一項に記載のセンサ・システム(10)。 16.基準要素(28)が、干渉図形干渉じま視認度を最適化するように調整す ることができる偏光制御装置(50)を含むことを特徴とする請求の範囲第1項 または第5項に記載のセンサ・システム(10)。 17.偏光制御装置(50)が、それぞれ、4分の1波長板として構成された、 2つの光ファイバ・ループ(52、54)を備えることを特徴とする請求の範囲 第16項に記載のセンサ・システム(10)。 18.センサ要素(24)および基準要素(28)が、円形コア単一モード光フ ァイバを備えることを特徴とする請求の範囲第1項から第17項のいずれか一項 に記載のセンサ・システム(10)。 19.センサ要素(24)が、ガス・タービン・エンジンに取り付けられ、エン ジン内の歪みおよび温度を測定できるように構成されることを特徴とする請求の 範囲第1項から第18項のいずれか一項に記載のセンサ・システム(10)。 20.センサ要素(24)が、航空機の機体またはエーロフォイル構造に取り付 けられ、構造上の歪みおよび温度を測定でき るように構成されることを特徴とする請求の範囲第1項から第19項のいずれか 一項に記載のセンサ・システム(10)。 21.センサ要素(24)が、炭素繊維材料内に位置し、この材料上の歪みおよ び温度を測定できるように構成されることを特徴とする請求の範囲第1項から第 20項のいずれか一項に記載のセンサ・システム(10)。 22.センサ要素(22)と基準要素(24)の間の光路差を変動させる手段( 66)が、基準アーム(28)中のエア・ギャップ(114)を走査することが できる並進ステージであることを特徴とする請求の範囲第1項または第5項に記 載のセンサ・システム(10)。 23.センサ要素と基準要素の間の光路差を変動させる手段(66)が、基準要 素(28)の光ファイバに取り付けられ光ファイバを伸張することができる移動 可能なクランプであることを特徴とする請求の範囲第18項に記載のセンサ・シ ステム(10)。 24.信号処理手段(128)が、干渉図形から2π不連続性を除去して明確な 歪みデータまたは温度データを提供する手段を含むことを特徴とする請求の範囲 第1項に記載のセンサ・システム(10)。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB939314487A GB9314487D0 (en) | 1993-07-12 | 1993-07-12 | Sensor system |
GB9314487.1 | 1993-07-12 | ||
PCT/GB1994/001388 WO1995002802A1 (en) | 1993-07-12 | 1994-06-27 | Sensor system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08512408A true JPH08512408A (ja) | 1996-12-24 |
JP3554326B2 JP3554326B2 (ja) | 2004-08-18 |
Family
ID=10738760
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50438995A Expired - Fee Related JP3554326B2 (ja) | 1993-07-12 | 1994-06-27 | センサ・システム |
Country Status (7)
Country | Link |
---|---|
US (1) | US5721615A (ja) |
EP (1) | EP0708913B1 (ja) |
JP (1) | JP3554326B2 (ja) |
CA (1) | CA2167066A1 (ja) |
DE (1) | DE69409386T2 (ja) |
GB (2) | GB9314487D0 (ja) |
WO (1) | WO1995002802A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009180712A (ja) * | 2008-02-01 | 2009-08-13 | National Institute Of Advanced Industrial & Technology | 内径測定装置 |
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GB2325741B (en) * | 1996-03-29 | 2000-03-01 | Secr Defence | Sensor system |
GB2311600A (en) * | 1996-03-29 | 1997-10-01 | Secr Defence | Optic Fibre Interferometric sensor |
GB9721473D0 (en) * | 1997-10-09 | 1997-12-10 | Sensor Dynamics Ltd | Interferometric sensing apparatus |
US6014215A (en) * | 1998-04-14 | 2000-01-11 | Physical Optics Corporation | Self-referencing interferometric fiber optic sensor system having a transducer mechanism with a position reference reflector |
US6175668B1 (en) * | 1999-02-26 | 2001-01-16 | Corning Incorporated | Wideband polarization splitter, combiner, isolator and controller |
US6870975B1 (en) | 2001-11-14 | 2005-03-22 | Fiber Optic Systems Technology, Inc. | Fiber optic sensor usable over wide range of gage lengths |
US6804008B1 (en) | 2001-11-14 | 2004-10-12 | Fiber Optic Systems Technology, Inc. | Fiber optic sensing instrument and system with fiber of adjustable optical path length and method of using it |
US6900895B2 (en) * | 2001-12-06 | 2005-05-31 | Agilent Technologies, Inc. | Phase noise compensation in an interferometric system |
US6842254B2 (en) * | 2002-10-16 | 2005-01-11 | Fiso Technologies Inc. | System and method for measuring an optical path difference in a sensing interferometer |
DE10301416B3 (de) * | 2003-01-16 | 2004-07-15 | Medizinisches Laserzentrum Lübeck GmbH | Verfahren und Vorrichtung zur kontaktlosen Temperaturüberwachung und -regelung |
US7239396B2 (en) * | 2003-09-19 | 2007-07-03 | Queen's University At Kingston | Method and apparatus for directly measuring the phase change of an optical signal |
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US7425820B2 (en) * | 2006-03-23 | 2008-09-16 | Dynamp Llc | High current measurement with temperature compensation |
US8277119B2 (en) * | 2006-12-19 | 2012-10-02 | Vibrosystm, Inc. | Fiber optic temperature sensor |
CA2680013A1 (en) * | 2007-03-22 | 2008-09-25 | Baker Hugues Incorporated | Location dependent calibration for distributed temperature sensor measurements |
WO2009059406A1 (en) * | 2007-11-06 | 2009-05-14 | Oti Ophthalmic Technologies Inc. | Optical coherence tomography with tandem interferometer |
KR101007131B1 (ko) * | 2008-11-25 | 2011-01-10 | 엘지이노텍 주식회사 | 발광 소자 패키지 |
US9316485B2 (en) * | 2010-11-29 | 2016-04-19 | Nokia Technologies Oy | Apparatus comprising a plurality of interferometers and method of configuring such apparatus |
AT512044B1 (de) * | 2012-01-17 | 2013-05-15 | Femtolasers Produktions Gmbh | Vorrichtung und verfahren zur optischen überprüfung einer probe |
DE102012006420A1 (de) * | 2012-03-30 | 2013-10-02 | Carl Zeiss Sms Gmbh | Temperatursensor sowie Verfahren zum Messen einer Temperaturänderung |
US9303309B2 (en) | 2013-01-11 | 2016-04-05 | The Aerospace Corporation | Systems and methods for enhancing mobility of atomic or molecular species on a substrate at reduced bulk temperature using acoustic waves, and structures formed using same |
US9488531B2 (en) * | 2013-08-27 | 2016-11-08 | Baker Hughes Incorporated | Loss compensation for distributed sensing in downhole environments |
WO2015069623A1 (en) * | 2013-11-08 | 2015-05-14 | United Technologies Corporation | Fiber grating temperature sensor |
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DE3420172A1 (de) * | 1984-05-30 | 1985-12-05 | Bodenseewerk Gerätetechnik GmbH, 7770 Überlingen | Vorrichtung zur messung des linienintegrals einer oertlich veraenderlichen messgroesse |
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GB2207236B (en) * | 1987-07-21 | 1991-04-24 | Plessey Co Plc | Improvements relating to optical fibre sensing arrangements |
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IT1255073B (it) * | 1992-04-01 | 1995-10-18 | Cise Spa | Procedimento e apparecchio per la misura assoluta e indipendente di grandezze meccaniche e termiche che agiscono contemporaneamente su una fibra ottica |
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JP2009180712A (ja) * | 2008-02-01 | 2009-08-13 | National Institute Of Advanced Industrial & Technology | 内径測定装置 |
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GB2295010B (en) | 1997-06-11 |
DE69409386T2 (de) | 1998-07-23 |
US5721615A (en) | 1998-02-24 |
GB9314487D0 (en) | 1993-08-25 |
JP3554326B2 (ja) | 2004-08-18 |
EP0708913B1 (en) | 1998-04-01 |
WO1995002802A1 (en) | 1995-01-26 |
EP0708913A1 (en) | 1996-05-01 |
GB2295010A (en) | 1996-05-15 |
DE69409386D1 (de) | 1998-05-07 |
CA2167066A1 (en) | 1995-01-26 |
GB9600675D0 (en) | 1996-03-13 |
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