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1. WO2021030656 - SIMULTANEOUS DISTRIBUTED TEMPERATURE AND VIBRATION SENSING USING MULTIMODE OPTICAL FIBER

Publication Number WO/2021/030656
Publication Date 18.02.2021
International Application No. PCT/US2020/046300
International Filing Date 14.08.2020
IPC
G01K 11/32 2006.01
GPHYSICS
01MEASURING; TESTING
KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
11Measuring temperature based on physical or chemical changes not covered by group G01K3/, G01K5/, G01K7/, or G01K9/202
32using changes in transmission, scattering or fluorescence in optical fibres
G01H 9/00 2006.01
GPHYSICS
01MEASURING; TESTING
HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
9Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
G01D 5/353 2006.01
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5Mechanical 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
26using optical means, i.e. using infra-red, visible or ultra-violet light
32with attenuation or whole or partial obturation of beams of light
34the beams of light being detected by photocells
353influencing the transmission properties of an optical fibre
CPC
G01D 5/35361
GPHYSICS
01MEASURING; TESTING
DMEASURING 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
5Mechanical 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
26characterised by optical transfer means, i.e. using infra-red, visible, or ultra-violet light
32with attenuation or whole or partial obturation of beams of light
34the beams of light being detected by photocells
353influencing the transmission properties of an optical fibre
35338using other arrangements than interferometer arrangements
35354Sensor working in reflection
35358using Backscattering to detect the measured quantity
35361using inelastic backscattering, e.g. Rayleigh, to detect the measured quantity
G01D 5/35364
GPHYSICS
01MEASURING; TESTING
DMEASURING 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
5Mechanical 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
26characterised by optical transfer means, i.e. using infra-red, visible, or ultra-violet light
32with attenuation or whole or partial obturation of beams of light
34the beams of light being detected by photocells
353influencing the transmission properties of an optical fibre
35338using other arrangements than interferometer arrangements
35354Sensor working in reflection
35358using Backscattering to detect the measured quantity
35364using elastic backscattering, i.e. Brillouin or Raman, to detect the measured quantity
G01H 9/004
GPHYSICS
01MEASURING; TESTING
HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
9Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
004using fibre optic sensors
G01K 11/32
GPHYSICS
01MEASURING; TESTING
KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
11Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
32using changes in transmittance, scattering or luminescence in optical fibres
G01K 11/324
GPHYSICS
01MEASURING; TESTING
KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
11Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
32using changes in transmittance, scattering or luminescence in optical fibres
324using Raman scattering
G02B 6/29361
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
24Coupling light guides
26Optical coupling means
28having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
293with wavelength selective means
29346operating by wave or beam interference
29361Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
Applicants
  • SAUDI ARABIAN OIL COMPANY [SA]/[SA]
  • ARAMCO AMERICAS [US]/[US] (AG)
  • KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY [SA]/[SA]
Inventors
  • HVEDING, Frode
  • ASHRY, Islam
  • YUAN, Mao
  • OOI, Boon Siew
  • ARSALAN, Muhammad
Agents
  • BRUCE, Carl E.
  • IYER, Sushil
  • COX, Michael E.
  • DEAN, Sean M.
  • WERNLI, Matthew K.
Priority Data
16/541,99815.08.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SIMULTANEOUS DISTRIBUTED TEMPERATURE AND VIBRATION SENSING USING MULTIMODE OPTICAL FIBER
(FR) DÉTECTION RÉPARTIE SIMULTANÉE DE TEMPÉRATURE ET DE VIBRATION À L'AIDE D'UNE FIBRE OPTIQUE MULTIMODE
Abstract
(EN)
Methods, systems, and apparatuses for simultaneous distributed temperature and vibration sensing using a multimode optical fiber (MMF) is disclosed. The distributed temperature and vibration sensing may include a single mode optical fiber (SMF) coupled to an MMF via a connection in which a central axis of the SMF is aligned with a central axis of the MMF. The connections provides of excitation of the fundamental mode within the MMF by light passing from the SMF into the MMF through the connection.
(FR)
L'invention concerne des procédés, des systèmes et des appareils pour une détection répartie simultanée de température et de vibration à l'aide d'une fibre optique multimode (MMF). La détection répartie de température et de vibration peut comprendre une fibre optique monomode (SMF) couplée à une MMF par l'intermédiaire d'une connexion dans laquelle un axe central de la SMF est aligné avec un axe central de la MMF. Les connexions permettent l'excitation du mode fondamental au sein de la MMF par une lumière passant de la SMF à la MMF par le biais de la connexion.
Also published as
Latest bibliographic data on file with the International Bureau