ES2080839T3 - Un cable de fibra optica para detectar un cambio de temperatura. - Google Patents

Un cable de fibra optica para detectar un cambio de temperatura.

Info

Publication number
ES2080839T3
ES2080839T3 ES90914975T ES90914975T ES2080839T3 ES 2080839 T3 ES2080839 T3 ES 2080839T3 ES 90914975 T ES90914975 T ES 90914975T ES 90914975 T ES90914975 T ES 90914975T ES 2080839 T3 ES2080839 T3 ES 2080839T3
Authority
ES
Spain
Prior art keywords
fibre
light
cover
coefficient
heat expansion
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.)
Expired - Lifetime
Application number
ES90914975T
Other languages
English (en)
Inventor
Bengt Johan Anders Carlstrom
Gunnar Stefan Forsberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson 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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of ES2080839T3 publication Critical patent/ES2080839T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

UN CABLE DE FIBRA OPTICA TIENE UNA FIBRA OPTICA CON UN NUCLEO Y UN REVESTIMIENTO RECUBIERTOS POR UNA CUBIERTA DE MATERIAL POLIMERICO. EN UN MARGEN DE DETECCION DE TEMPERATURA (T1-T2) EL MATERIAL POLIMERICO TIENE UN COEFICIENTE DE EXPANSION DE CALOR NEGATIVO ((ALFA)0), CUYO VALOR ABSOLUTO ES MAYOR QUE EL COEFICIENTE DE EXPANSION DE CALOR ((ALFA)) EN MARGENES DE TEMPERATURA CIRCUNDANTES (T0-T1, T2-T3). CUANDO ESTA SOMETIDA A UN INCREMENTO DE TEMPERATURA (T), LA CUBIERTA ENTRARA EN CONTACTO Y CAUSARA LA MICROCURVATURA DE LA FIBRA OPTICA. EL RECORRIDO LUMINOSO EN LA FIBRA SE ATENUA Y SE REFLEJA, Y LA LUZ REFLEJADA SE ATENUA AUN MAS EN UN DOMINIO CALENTADO DE LA FIBRA. EL TAMAÑO DEL DOMINIO Y SU POSICION A LO LARGO DE LA FIBRA SE PUEDEN DETERMINAR MIDIENDO LA VELOCIDAD DE LA LUZ. LA CUBIERTA DE POLIMERO TIENE UN COEFICIENTE DE EXPANSION DE CALOR TAL QUE PERMITE DETECTAR VARIOS DOMINIOS CALENTADOS. LA FIBRA ATENUA LA LUZ EN UN MARGEN DE 0,01-0,1 DB/M EN EL ESTADO DE CALENTAMIENTO DE LA FIBRA.
ES90914975T 1989-10-02 1990-10-02 Un cable de fibra optica para detectar un cambio de temperatura. Expired - Lifetime ES2080839T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8903229A SE468229B (sv) 1989-10-02 1989-10-02 Optisk fiberkabel foer detektering av en temperaturfoeraendring

Publications (1)

Publication Number Publication Date
ES2080839T3 true ES2080839T3 (es) 1996-02-16

Family

ID=20377026

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90914975T Expired - Lifetime ES2080839T3 (es) 1989-10-02 1990-10-02 Un cable de fibra optica para detectar un cambio de temperatura.

Country Status (11)

Country Link
US (1) US5251274A (es)
EP (2) EP0421967A1 (es)
JP (1) JP3061407B2 (es)
AT (1) ATE131607T1 (es)
AU (1) AU6522990A (es)
DE (1) DE69024224T2 (es)
DK (1) DK0494930T3 (es)
ES (1) ES2080839T3 (es)
NO (1) NO921270L (es)
SE (1) SE468229B (es)
WO (1) WO1991005230A1 (es)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0553675A1 (de) * 1992-01-29 1993-08-04 Siemens Aktiengesellschaft Verfahren und Vorrichtung zur Überwachung der Temperatur in einem Turbinenbauteil
US5419636A (en) * 1993-08-12 1995-05-30 Sandia Corporation Microbend fiber-optic temperature sensor
SE502778C2 (sv) * 1993-10-14 1996-01-08 Ericsson Telefon Ab L M Optisk fiber för användning som givare jämte förfarande för framställning av en optisk fiber för användning som givare
WO1996010735A1 (en) * 1994-10-03 1996-04-11 York Sensors Limited Monitoring wall temperatures of reactor vessels
US6205280B1 (en) * 1998-08-25 2001-03-20 Molecular Optoelectronics Corporation Blockless fiber optic attenuators and attenuation systems employing dispersion controlled polymers
US6144780A (en) * 1998-10-05 2000-11-07 Lucent Technologies Inc. Polymer waveguide switch and method
DE19935439A1 (de) * 1999-07-28 2001-02-15 Siemens Ag Sensorleitung
DE10111640A1 (de) 2001-03-10 2002-10-02 Airbus Gmbh Verfahren zur Ermittlung und Meldung von Überhitzungen und Feuern in einem Flugzeug
US7077566B2 (en) * 2003-12-11 2006-07-18 General Electric Company Methods and apparatus for temperature measurement and control in electromagnetic coils
US20090067776A1 (en) * 2007-09-11 2009-03-12 Schlumberger Technology Corporation Optical fibers
JP5353262B2 (ja) * 2008-04-02 2013-11-27 富士通株式会社 温度計測方法、温度制御システム、風量測定装置及び発熱量測定装置
US8303176B2 (en) * 2010-05-11 2012-11-06 Vladimir Kochergin Cryogenic fiber optic temperature sensor and method of manufacturing the same
GB2518190B (en) * 2013-09-12 2018-06-06 Buddi Ltd Tag including a thermo-chromic optical fibre
US9964698B1 (en) * 2016-10-28 2018-05-08 The Boeing Company Multicore optical fiber cable strain enhancement
DE102018117979A1 (de) 2018-07-25 2020-01-30 Brugg Rohr Ag Holding Doppelwandiges Leitungsrohr sowie ein Lichtwellenleiter für ein solches Leitungsrohr

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4417782A (en) * 1980-03-31 1983-11-29 Raychem Corporation Fiber optic temperature sensing
JPS57111424A (en) * 1980-12-29 1982-07-10 Fujitsu Ltd Optical temperature detector
US4463254A (en) * 1981-08-27 1984-07-31 Trw Inc. Microbending of optical fibers for remote force measurement
JPS5950676A (ja) * 1982-09-17 1984-03-23 Hitachi Ltd 可変速再生用ビデオテ−プレコ−ダ
GB8311256D0 (en) * 1983-04-26 1983-06-02 Central Electr Generat Board Measuring external parameter
JPS59203929A (ja) * 1983-05-06 1984-11-19 Sumitomo Electric Ind Ltd 光ファイバ用感温収縮部材
US4729627A (en) * 1983-08-15 1988-03-08 Sumitomo Electric Industries, Ltd. Optical fiber cable for detecting low temperature
SE443656B (sv) * 1984-07-20 1986-03-03 Ericsson Telefon Ab L M Mikrobojkenslig optisk fiberkabel
GB2170593B (en) * 1985-02-01 1988-09-14 Central Electr Generat Board Temperature measurement
JPS6269131A (ja) * 1985-09-24 1987-03-30 Fujikura Ltd 光フアイバ温度センサ
JPS6269132A (ja) * 1985-09-24 1987-03-30 Fujikura Ltd 光フアイバ温度センサ

Also Published As

Publication number Publication date
EP0494930B1 (en) 1995-12-13
EP0494930A1 (en) 1992-07-22
WO1991005230A1 (en) 1991-04-18
SE8903229D0 (sv) 1989-10-02
DE69024224T2 (de) 1996-05-02
AU6522990A (en) 1991-04-28
DK0494930T3 (da) 1996-01-22
EP0421967A1 (en) 1991-04-10
NO921270D0 (no) 1992-04-01
JP3061407B2 (ja) 2000-07-10
SE8903229L (sv) 1991-04-03
NO921270L (no) 1992-05-19
JPH03132604A (ja) 1991-06-06
SE468229B (sv) 1992-11-23
US5251274A (en) 1993-10-05
DE69024224D1 (de) 1996-01-25
ATE131607T1 (de) 1995-12-15

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