KR880010338A - 광학센서 - Google Patents

광학센서 Download PDF

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Publication number
KR880010338A
KR880010338A KR1019880001958A KR880001958A KR880010338A KR 880010338 A KR880010338 A KR 880010338A KR 1019880001958 A KR1019880001958 A KR 1019880001958A KR 880001958 A KR880001958 A KR 880001958A KR 880010338 A KR880010338 A KR 880010338A
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KR
South Korea
Prior art keywords
optical fiber
light
parameter
color
analyzer
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KR1019880001958A
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English (en)
Inventor
리스 죤스 고던
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원본미기재
비아이씨씨 퍼블릭 리미티드 컴퍼니
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Publication of KR880010338A publication Critical patent/KR880010338A/ko

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
    • G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
    • G01L1/243—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using means for applying force perpendicular to the fibre axis
    • G01L1/245—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using means for applying force perpendicular to the fibre axis using microbending
    • 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
    • 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
    • G01D5/35338—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 other arrangements than interferometer arrangements
    • G01D5/35341—Sensor working in transmission
    • G01D5/35345—Sensor working in transmission using Amplitude variations to detect the measured quantity
    • 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
    • G01D5/3537—Optical fibre sensor using a particular arrangement of the optical fibre itself
    • G01D5/35374—Particular layout of the fiber

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Glass Compositions (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Optical Transform (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measuring Fluid Pressure (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

내용 없음

Description

광학센서
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 의한 압력센서의 계통도,
제2도는

Claims (15)

  1. 광원(2), 검광기(3) 및 광원으로부터 검광기에 광선을 투과시키게 되어 있고, 측정대상 파라미터내의 변화에 의하여 광학섬유가 이동함으로써 마이크로벤딩의 양이 변동되는 광학섬유(1)로 구성되어 있는 파라미터의 측정장치로서, 광원(2)이 다색광원으로 되어 있기 때문에 마이크로벤딩이 광학섬유(1)내에 더 이상 억류되어 있지 아니한 다색광선의 일부를 변동시키고, 검광기(3)가 광학섬유(1)에 의하여 서로 다른 다수의 파장으로 투과되는 다색광선의 강도를 탐지하게 되어 있고, 검광기(3)의 출력을 측정대상 파라미터로 해석하는 분석수단(6)이 제공되어 있는 것을 특징으로 하는 장치.
  2. 제1항에 있어서, 검광기(3)가 2개 이사의 분리된 예정 파장에서 입사광선의 강도비를 모니터하게 되어 있는 것을 특징으로 하는 장치.
  3. 제1항에 있어서, 검광기(3)가 제1요소(4)의 파장에 대한 감응도가 제2요소(5)의 파장에 대한 감응도와 다른 적어도 제1 및 제2감광요소(4,5)로 구성되어 있고, 감광요소(4,5)로부터 발신되는 신호가 분석수단(6)에 공급되고, 이 분석수단이 감광요소(4,5)로부터 발신되는 신호로부터 광학섬유(1)를 투과하고, 색도도상에 2개 이상의 파라미터로 표시되고 다색광선의 색을 산출하는 것을 특징으로 하는 장치.
  4. 제1항 내지 제3항 중 한 항에 있어서, 특정대상 파라미터내의 변화에 의하여 광학섬유의 적어도 일부가 이에 맞대어 밀리는 부재(7)가 제공되어 있는 거슬 특징으로 하는 장치.
  5. 제4항에 있어서, 상기 부재가 세로방향으로 뻗어 있는 모빌(7)로 되어 있고, 광학섬유(1)가 이 모빌에 인접하여 배치되어 있는 것을 특징으로 하는 장치.
  6. 제5항에 있어서, 광학섬유(1)가 모빌(7)에 따라 제1세로방향으로 뻗어 있는 제1부분과 모빌(7)에 따라 반대의 세로방향으로 복귀하는 제2부분으로 구성되어 있는 것을 특징으로 하는 장치.
  7. 제6항에 있어서, 광학섬유(1)의 제1 및 제2부분이 서로 비꼬여 있는 것을 특징으로 하는 장치.
  8. 제5항 또는 제6항에 있어서, 광학섬유(1)가 세로방향으로 뻗어 있는 모루상에 나선형으로 감겨 있는 것을 특징으로 하는 장치.
  9. 제8항에 있어서, 모루가 실린더(9)의 형태로 되어 있는 것을 특징으로 하는 장치.
  10. 제1항 내지 제9항 중 한 항에 있어서, 다색광선 중 더 이상 광학섬유내에 억류 되어 있지 아니한 부분의 색을 변조시키는 수단(11)과 색변조 된 광선을 광학섬유(1)내로 복귀시키는 수단이 제공되어 있는 것을 특징으로 하는 장치.
  11. 제10항에 있어서, 색변조수단에 광학섬유에 인접한 착색필터(11)가 포함되어 있고, 복귀수단에 광학섬유(1)로부터 멀리 떨어진 필터의 면에 제공된 반사면(12)이 포함되어 있는 것을 특징으로 하는 장치.
  12. 제11항에 있어서, 착색필터(11)가 광학섬유를 둘러 싸는 슬리브(10)로서 형성되어 있는 것을 특징으로 하는 장치.
  13. 파라미터를 측정하는 방법으로서 다색광선을 광학섬유(1)에 따라 통과시키고, 측정대상 파라미터내의 변화에 의하여 섬유를 이동시킴으로서 다색광선 중 더 이상 광학섬유내에 억류되어 있지 아니한 부분이 변동되도록 마이크로벤딩의 양을 변동시킬 수 있게 광학섬유(1)를 배치하고, 서로 다른 다수의 파장에서 과학섬유를 투과하는 다색광선의 강도를 탐지하고, 다색광선의 탐지된 강도를 측정대상 파라미터에 의하여 해석하는 단계들로 구성되어 있는 것을 특징으로 하는 방법.
  14. 제13항에 있어서, 탐지된 광선 강도의 비를 2개 이상의 분리된 파장에서 모니터하는 단계가 포함되어 있는 것을 특징으로 하는 방법.
  15. 제13항에 있어서, 투과하는 다색광선을 제1요소(4)의 파장에 대한 감응도가 제2요소(5)의 파장에 대한 감응도와 다른 적어도 제1 및 제2감광요소(4,5)로 구성되는 검광기(3)로 탐지하고, 제1 및 제2감광요소(4,5)의 출력으로부터 2개 이상의 파라미터에 의하여 색도도상에 표시되는 투과 다색광선의 색을 산출하고, 투과 다색광선의 색을 측정대상 파라미터에 의하여 해석하는 단계로 구성되어 있는 것을 특징으로 하는 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019880001958A 1987-02-26 1988-02-26 광학센서 KR880010338A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8704540A GB8704540D0 (en) 1987-02-26 1987-02-26 Optical sensors
GB8704540 1987-02-26

Publications (1)

Publication Number Publication Date
KR880010338A true KR880010338A (ko) 1988-10-08

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Country Status (8)

Country Link
US (1) US4880970A (ko)
EP (1) EP0288139B1 (ko)
KR (1) KR880010338A (ko)
CN (1) CN88101065A (ko)
AT (1) ATE92621T1 (ko)
AU (1) AU1217788A (ko)
DE (1) DE3882784T2 (ko)
GB (2) GB8704540D0 (ko)

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IT1180071B (it) * 1984-06-05 1987-09-23 Cselt Centro Studi Lab Telecom Procedimento e apparecchiatura per la misura della lunghezza d'onda di taglio del primo modo d'ordine superiore in fibre ottiche
US4653906A (en) * 1984-08-13 1987-03-31 United Technologies Corporation Spatially resolving fiber-optic crosstalk strain sensor
US4727254A (en) * 1986-11-17 1988-02-23 General Motors Corporation Dual wavelength microbend sensor

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GB2201511A (en) 1988-09-01
GB8804564D0 (en) 1988-03-30
DE3882784T2 (de) 1993-11-11
GB8704540D0 (en) 1987-04-01
US4880970A (en) 1989-11-14
GB2201511B (en) 1990-10-03
ATE92621T1 (de) 1993-08-15
EP0288139B1 (en) 1993-08-04
AU1217788A (en) 1988-09-01
EP0288139A2 (en) 1988-10-26
EP0288139A3 (en) 1989-10-18
DE3882784D1 (de) 1993-09-09
CN88101065A (zh) 1988-09-07

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