SE0400412D0 - Fiber optic sensor - Google Patents

Fiber optic sensor

Info

Publication number
SE0400412D0
SE0400412D0 SE0400412A SE0400412A SE0400412D0 SE 0400412 D0 SE0400412 D0 SE 0400412D0 SE 0400412 A SE0400412 A SE 0400412A SE 0400412 A SE0400412 A SE 0400412A SE 0400412 D0 SE0400412 D0 SE 0400412D0
Authority
SE
Sweden
Prior art keywords
interrupts
waveguide path
fiber optic
optic sensor
movement
Prior art date
Application number
SE0400412A
Other languages
Swedish (sv)
Other versions
SE527657C2 (en
SE0400412L (en
Inventor
Anders Larsson
Original Assignee
Fiberson Ab
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 Fiberson Ab filed Critical Fiberson Ab
Priority to SE0400412A priority Critical patent/SE527657C2/en
Publication of SE0400412D0 publication Critical patent/SE0400412D0/en
Priority to PCT/SE2005/000275 priority patent/WO2005080913A1/en
Publication of SE0400412L publication Critical patent/SE0400412L/en
Publication of SE527657C2 publication Critical patent/SE527657C2/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
    • G01K11/3206—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres at discrete locations in the fibre, e.g. using Bragg scattering
    • 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

Abstract

A sensor includes a waveguide path (1) in which interrupts (3) are arranged at a plurality of places. At the interrupts the ends of the waveguide path can be simultaneously moved in relation to each other. The attenuation of light, injected from a light source (7) and propagating along the waveguide path, produced by the movement, is measured by a detector (9). Even if the movement at the interrupts is very small it can be measured due to the multiplying effect obtained by the fact that a plurality of interrupts are arranged. The waveguide path can be an optical fiber wound in large number of turns in a spiral or helical shape or so that it forms a coil.
SE0400412A 2004-02-23 2004-02-23 Fiber optic sensor SE527657C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE0400412A SE527657C2 (en) 2004-02-23 2004-02-23 Fiber optic sensor
PCT/SE2005/000275 WO2005080913A1 (en) 2004-02-23 2005-02-23 Fiber/optcal sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0400412A SE527657C2 (en) 2004-02-23 2004-02-23 Fiber optic sensor

Publications (3)

Publication Number Publication Date
SE0400412D0 true SE0400412D0 (en) 2004-02-23
SE0400412L SE0400412L (en) 2005-08-24
SE527657C2 SE527657C2 (en) 2006-05-02

Family

ID=31989584

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0400412A SE527657C2 (en) 2004-02-23 2004-02-23 Fiber optic sensor

Country Status (2)

Country Link
SE (1) SE527657C2 (en)
WO (1) WO2005080913A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106197303B (en) * 2016-06-24 2017-09-29 天津大学 The optical fiber laying method of spiral of Archimedes is utilized in a kind of probe beam deflation
CN109945902A (en) * 2019-04-15 2019-06-28 广州大学 A kind of fibre optical sensor, production mold and production method
CN111504214B (en) * 2020-03-27 2021-06-08 中国特种设备检测研究院 Optical fiber monitoring method for deformation of large crude oil storage tank body

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2737499C3 (en) * 1977-08-19 1981-10-22 Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V., 3400 Göttingen Fiber optic circuit element
CH639217A5 (en) * 1979-04-20 1983-10-31 Benno Perren SENSOR FOR A MONITORING DEVICE.
GB2120780A (en) * 1982-05-10 1983-12-07 Castell Safety Technology Ltd Switch
US5623564A (en) * 1995-06-07 1997-04-22 Lucent Technologies Inc. Self-aligned mechanical optical switch

Also Published As

Publication number Publication date
SE527657C2 (en) 2006-05-02
SE0400412L (en) 2005-08-24
WO2005080913A1 (en) 2005-09-01

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