EA201290326A1 - Усовершенствования в распределенном считывании - Google Patents

Усовершенствования в распределенном считывании

Info

Publication number
EA201290326A1
EA201290326A1 EA201290326A EA201290326A EA201290326A1 EA 201290326 A1 EA201290326 A1 EA 201290326A1 EA 201290326 A EA201290326 A EA 201290326A EA 201290326 A EA201290326 A EA 201290326A EA 201290326 A1 EA201290326 A1 EA 201290326A1
Authority
EA
Eurasian Patent Office
Prior art keywords
fiber
source
acoustic wave
optical fiber
acoustic
Prior art date
Application number
EA201290326A
Other languages
English (en)
Other versions
EA024802B1 (ru
Inventor
Дэвид Джон ХИЛЛ
Магнус Макьюэн-Кинг
Original Assignee
Оптасенс Холдингз Лимитед
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 Оптасенс Холдингз Лимитед filed Critical Оптасенс Холдингз Лимитед
Publication of EA201290326A1 publication Critical patent/EA201290326A1/ru
Publication of EA024802B1 publication Critical patent/EA024802B1/ru

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
    • G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
    • G01S3/802—Systems for determining direction or deviation from predetermined direction
    • G01S3/808—Systems for determining direction or deviation from predetermined direction using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
    • G01S3/8083—Systems for determining direction or deviation from predetermined direction using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems determining direction of source
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
    • G01S5/22—Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Optical Transform (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)

Abstract

Описаны подходы для определения поперечного смещения источника акустического возмущения в распределенном акустическом оптоволоконном датчике. Датчик содержит оптический источник (112) для опрашивания оптического волокна (104) и детектор (116) и процессор (108), выполненные с возможностью регистрации любого обратнорассеянного излучения и определения измерительного сигнала для множества дискретных продольных считывающих участков оптического волокна. Процессор также выполнен с возможностью анализа измерительных сигналов для идентификации сигналов, соответствующих одной и той же акустической волне, приходящей на разные части волокна, и определения, исходя из времени прихода упомянутой акустической волны, направления и/или расстояния источника упомянутой акустической волны относительно оптического волокна. Геометрия волокна может иметь конфигурацию, позволяющую разрешать любую неопределенность местоположения, и раскрыто использование множества волокон (501, 502).
EA201290326A 2009-11-13 2010-11-11 Распределенный оптоволоконный акустический датчик и способ определения направления и/или расстояния до источника акустической волны при распределенном оптоволоконном акустическом считывании с использованием указанного датчика EA024802B1 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0919904.3A GB0919904D0 (en) 2009-11-13 2009-11-13 Determining lateral offset in distributed fibre optic acoustic sensing
PCT/GB2010/002073 WO2011058313A2 (en) 2009-11-13 2010-11-11 Improvements in distributed sensing

Publications (2)

Publication Number Publication Date
EA201290326A1 true EA201290326A1 (ru) 2012-12-28
EA024802B1 EA024802B1 (ru) 2016-10-31

Family

ID=41509336

Family Applications (1)

Application Number Title Priority Date Filing Date
EA201290326A EA024802B1 (ru) 2009-11-13 2010-11-11 Распределенный оптоволоконный акустический датчик и способ определения направления и/или расстояния до источника акустической волны при распределенном оптоволоконном акустическом считывании с использованием указанного датчика

Country Status (10)

Country Link
US (1) US9631972B2 (ru)
EP (1) EP2499471B1 (ru)
CN (1) CN102483347B (ru)
AU (1) AU2010317791B2 (ru)
BR (1) BR112012011229B1 (ru)
CA (1) CA2780623C (ru)
EA (1) EA024802B1 (ru)
GB (1) GB0919904D0 (ru)
MY (1) MY159400A (ru)
WO (1) WO2011058313A2 (ru)

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Also Published As

Publication number Publication date
EP2499471B1 (en) 2022-01-26
WO2011058313A2 (en) 2011-05-19
CA2780623C (en) 2018-07-24
CN102483347B (zh) 2015-05-20
AU2010317791A1 (en) 2012-07-05
CA2780623A1 (en) 2011-05-19
AU2010317791A2 (en) 2012-12-06
BR112012011229A2 (pt) 2018-03-27
GB0919904D0 (en) 2009-12-30
US20120226452A1 (en) 2012-09-06
WO2011058313A3 (en) 2011-10-06
CN102483347A (zh) 2012-05-30
EP2499471A2 (en) 2012-09-19
AU2010317791B2 (en) 2014-06-12
BR112012011229B1 (pt) 2020-01-21
EA024802B1 (ru) 2016-10-31
US9631972B2 (en) 2017-04-25
MY159400A (en) 2016-12-30

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MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

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