WO2020056820A1 - Procédé et dispositif de mesure de température et/ou de déformation en fonction d'un décalage brillouin - Google Patents

Procédé et dispositif de mesure de température et/ou de déformation en fonction d'un décalage brillouin Download PDF

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Publication number
WO2020056820A1
WO2020056820A1 PCT/CN2018/110593 CN2018110593W WO2020056820A1 WO 2020056820 A1 WO2020056820 A1 WO 2020056820A1 CN 2018110593 W CN2018110593 W CN 2018110593W WO 2020056820 A1 WO2020056820 A1 WO 2020056820A1
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WO
WIPO (PCT)
Prior art keywords
frequency shift
optical fiber
temperature
fiber
brillouin frequency
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PCT/CN2018/110593
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English (en)
Chinese (zh)
Inventor
沈小平
胡紫阳
周兰颖
蔡文杰
陈斌
庄浩兵
Original Assignee
通鼎互联信息股份有限公司
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Application filed by 通鼎互联信息股份有限公司 filed Critical 通鼎互联信息股份有限公司
Publication of WO2020056820A1 publication Critical patent/WO2020056820A1/fr

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    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • G01B11/18—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge using photoelastic elements
    • 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
    • G01K11/322—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 using Brillouin scattering

Abstract

La présente invention concerne un procédé et un dispositif de mesure de la température et/ou de la déformation selon un décalage Brillouin. Une section de fibre optique courbée dont les deux extrémités sont fixées est utilisée, l'effet de la contrainte sur le décalage Brillouin après que la fibre optique soit pliée et ses deux extrémités fixées est ignoré pour mesurer le décalage Brillouin de la section de fibre optique, et la température peut être obtenue en fonction de la relation entre le décalage Brillouin et la température. Le décalage Brillouin d'une section de fibre optique non fixée à une certaine température est ensuite mesuré, et la contrainte est obtenue par calcul. Selon la présente invention, la température et la contrainte d'un nœud de fibre optique peuvent être mesurées indépendamment, le calcul est simple et le résultat est précis.
PCT/CN2018/110593 2018-09-18 2018-10-17 Procédé et dispositif de mesure de température et/ou de déformation en fonction d'un décalage brillouin WO2020056820A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811087772 2018-09-18
CN201811087772.8 2018-09-18

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WO2020056820A1 true WO2020056820A1 (fr) 2020-03-26

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PCT/CN2018/110593 WO2020056820A1 (fr) 2018-09-18 2018-10-17 Procédé et dispositif de mesure de température et/ou de déformation en fonction d'un décalage brillouin

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CN (1) CN109696256A (fr)
WO (1) WO2020056820A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110132840B (zh) * 2019-05-08 2021-10-22 浙江数智交院科技股份有限公司 基于自平衡原理的压型钢板与混凝土水平粘结力测量装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102607621A (zh) * 2012-03-29 2012-07-25 中国科学院上海光学精密机械研究所 同时检测温度和应变的分布式光纤布里渊传感装置和方法
CN102645245A (zh) * 2012-05-18 2012-08-22 哈尔滨工业大学 基于光纤布里渊散射的分布式流体压力和温度同时测量装置及测量方法
CN104142187A (zh) * 2014-07-30 2014-11-12 冀中能源集团有限责任公司 沿空留巷膏体填充体在线检测方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5222513B2 (ja) * 2007-09-26 2013-06-26 日本電信電話株式会社 光ファイバ測定方法、光ファイバ測定システムおよび光ファイバ測定装置
CN103115642B (zh) * 2013-01-21 2015-03-25 华北电力大学（保定） 基于布里渊散射的光纤应变和温度同时标定装置和方法
CN103323142B (zh) * 2013-07-31 2015-10-28 南京大学 Botdr工程应用中剔出温度因素对应力监测影响的方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102607621A (zh) * 2012-03-29 2012-07-25 中国科学院上海光学精密机械研究所 同时检测温度和应变的分布式光纤布里渊传感装置和方法
CN102645245A (zh) * 2012-05-18 2012-08-22 哈尔滨工业大学 基于光纤布里渊散射的分布式流体压力和温度同时测量装置及测量方法
CN104142187A (zh) * 2014-07-30 2014-11-12 冀中能源集团有限责任公司 沿空留巷膏体填充体在线检测方法

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