GB2197953B - Acoustic sensor - Google Patents

Acoustic sensor

Info

Publication number
GB2197953B
GB2197953B GB8628367A GB8628367A GB2197953B GB 2197953 B GB2197953 B GB 2197953B GB 8628367 A GB8628367 A GB 8628367A GB 8628367 A GB8628367 A GB 8628367A GB 2197953 B GB2197953 B GB 2197953B
Authority
GB
United Kingdom
Prior art keywords
acoustic sensor
acoustic
sensor
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 - Fee Related
Application number
GB8628367A
Other versions
GB2197953A (en
GB8628367D0 (en
Inventor
Michael Laurence Henning
Christopher Lamb
David Havard
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.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB8628367A priority Critical patent/GB2197953B/en
Publication of GB8628367D0 publication Critical patent/GB8628367D0/en
Publication of GB2197953A publication Critical patent/GB2197953A/en
Application granted granted Critical
Publication of GB2197953B publication Critical patent/GB2197953B/en
Anticipated expiration legal-status Critical
Application status is Expired - Fee Related legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H9/00Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
    • G01H9/004Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H17/00Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00Arrangements or instruments for measuring magnetic variables
    • G01R33/02Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/032Measuring direction or magnitude of magnetic fields or magnetic flux using magneto-optic devices, e.g. Faraday, Cotton-Mouton effect
    • G01R33/0327Measuring direction or magnitude of magnetic fields or magnetic flux using magneto-optic devices, e.g. Faraday, Cotton-Mouton effect with application of magnetostriction
GB8628367A 1986-11-27 1986-11-27 Acoustic sensor Expired - Fee Related GB2197953B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8628367A GB2197953B (en) 1986-11-27 1986-11-27 Acoustic sensor

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8628367A GB2197953B (en) 1986-11-27 1986-11-27 Acoustic sensor
PCT/GB1987/000850 WO1988004032A1 (en) 1986-11-27 1987-11-27 Acoustic sensor
AU82384/87A AU8238487A (en) 1986-11-27 1987-11-27 Acoustic sensor
EP19870907617 EP0298090A1 (en) 1986-11-27 1987-11-27 Acoustic sensor

Publications (3)

Publication Number Publication Date
GB8628367D0 GB8628367D0 (en) 1987-07-08
GB2197953A GB2197953A (en) 1988-06-02
GB2197953B true GB2197953B (en) 1990-06-06

Family

ID=10608032

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8628367A Expired - Fee Related GB2197953B (en) 1986-11-27 1986-11-27 Acoustic sensor

Country Status (4)

Country Link
EP (1) EP0298090A1 (en)
AU (1) AU8238487A (en)
GB (1) GB2197953B (en)
WO (1) WO1988004032A1 (en)

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GB9026587D0 (en) * 1990-12-06 1991-04-24 Marconi Gec Ltd Improvements relating to optical fibre coil assemblies
GB2312502A (en) * 1996-04-26 1997-10-29 Marconi Gec Ltd Vibration compensation for a balanding coil assembly
GB0517210D0 (en) * 2005-08-23 2005-09-28 Qinetiq Ltd Demodulation apparatus
CN105890637A (en) 2009-05-27 2016-08-24 希里克萨有限公司 Method and apparatus for optical sensing
GB0919902D0 (en) 2009-11-13 2009-12-30 Qinetiq Ltd Improvements in fibre optic cables for distributed sensing
BR112012014349A2 (en) * 2009-12-23 2016-08-23 Shell Int Research distributed acoustic sensing fiber optic set, and directionally sensitive, distributed acoustic sensing method
AU2011314185B2 (en) * 2010-10-14 2014-10-02 Fibersonics Inc. Interferometer systems
EP2656112A2 (en) 2010-12-21 2013-10-30 Shell Internationale Research Maatschappij B.V. Detecting the direction of acoustic signals with a fiber optical distributed acoustic sensing (das) assembly
GB201219331D0 (en) 2012-10-26 2012-12-12 Optasense Holdings Ltd Fibre optic cable for acoustic/seismic sensing
GB2515574A (en) * 2013-06-28 2014-12-31 Tgs Geophysical Company Ltd Distributed optical sensing
US9910105B2 (en) 2014-03-20 2018-03-06 Lockheed Martin Corporation DNV magnetic field detector
US9638821B2 (en) 2014-03-20 2017-05-02 Lockheed Martin Corporation Mapping and monitoring of hydraulic fractures using vector magnetometers
US9590601B2 (en) 2014-04-07 2017-03-07 Lockheed Martin Corporation Energy efficient controlled magnetic field generator circuit
US9853837B2 (en) 2014-04-07 2017-12-26 Lockheed Martin Corporation High bit-rate magnetic communication
US9910104B2 (en) 2015-01-23 2018-03-06 Lockheed Martin Corporation DNV magnetic field detector
US10168393B2 (en) 2014-09-25 2019-01-01 Lockheed Martin Corporation Micro-vacancy center device
CN106793878B (en) 2014-09-30 2018-07-06 深圳市大耳马科技有限公司 Posture and life sign monitor system and method
WO2016118791A1 (en) * 2015-01-23 2016-07-28 Lockheed Martin Corporation Dnv magnetic field detector
US9557391B2 (en) 2015-01-23 2017-01-31 Lockheed Martin Corporation Apparatus and method for high sensitivity magnetometry measurement and signal processing in a magnetic detection system
EP3250887A4 (en) 2015-01-28 2018-11-14 Lockheed Martin Corporation Magnetic navigation methods and systems utilizing power grid and communication network
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US10241158B2 (en) 2015-02-04 2019-03-26 Lockheed Martin Corporation Apparatus and method for estimating absolute axes' orientations for a magnetic detection system
GB2551090A (en) 2015-02-04 2017-12-06 Lockheed Corp Apparatus and method for recovery of three dimensional magnetic field from a magnetic detection system
EP3371614A1 (en) 2015-11-04 2018-09-12 Lockheed Martin Corporation Magnetic band-pass filter
US9829545B2 (en) 2015-11-20 2017-11-28 Lockheed Martin Corporation Apparatus and method for hypersensitivity detection of magnetic field
WO2017087013A1 (en) 2015-11-20 2017-05-26 Lockheed Martin Corporation Apparatus and method for closed loop processing for a magnetic detection system
US9614589B1 (en) 2015-12-01 2017-04-04 Lockheed Martin Corporation Communication via a magnio
US10088452B2 (en) 2016-01-12 2018-10-02 Lockheed Martin Corporation Method for detecting defects in conductive materials based on differences in magnetic field characteristics measured along the conductive materials
AU2016387314A1 (en) 2016-01-21 2018-09-06 Lockheed Martin Corporation Magnetometer with a light emitting diode
US20170212258A1 (en) * 2016-01-21 2017-07-27 Lockheed Martin Corporation Hydrophone
WO2017127081A1 (en) 2016-01-21 2017-07-27 Lockheed Martin Corporation Diamond nitrogen vacancy sensor with circuitry on diamond
WO2017127096A1 (en) 2016-01-21 2017-07-27 Lockheed Martin Corporation Diamond nitrogen vacancy sensor with dual rf sources
WO2017127094A1 (en) 2016-01-21 2017-07-27 Lockheed Martin Corporation Magnetometer with light pipe
WO2017127098A1 (en) * 2016-01-21 2017-07-27 Lockheed Martin Corporation Diamond nitrogen vacancy sensed ferro-fluid hydrophone
WO2017127079A1 (en) 2016-01-21 2017-07-27 Lockheed Martin Corporation Ac vector magnetic anomaly detection with diamond nitrogen vacancies
US9835693B2 (en) 2016-01-21 2017-12-05 Lockheed Martin Corporation Higher magnetic sensitivity through fluorescence manipulation by phonon spectrum control
US9551763B1 (en) 2016-01-21 2017-01-24 Lockheed Martin Corporation Diamond nitrogen vacancy sensor with common RF and magnetic fields generator
US10345396B2 (en) 2016-05-31 2019-07-09 Lockheed Martin Corporation Selected volume continuous illumination magnetometer
US10527746B2 (en) 2016-05-31 2020-01-07 Lockheed Martin Corporation Array of UAVS with magnetometers
US20170343621A1 (en) 2016-05-31 2017-11-30 Lockheed Martin Corporation Magneto-optical defect center magnetometer
US10317279B2 (en) 2016-05-31 2019-06-11 Lockheed Martin Corporation Optical filtration system for diamond material with nitrogen vacancy centers
US10371765B2 (en) 2016-07-11 2019-08-06 Lockheed Martin Corporation Geolocation of magnetic sources using vector magnetometer sensors
US10338163B2 (en) 2016-07-11 2019-07-02 Lockheed Martin Corporation Multi-frequency excitation schemes for high sensitivity magnetometry measurement with drift error compensation
US10281550B2 (en) 2016-11-14 2019-05-07 Lockheed Martin Corporation Spin relaxometry based molecular sequencing
US10345395B2 (en) 2016-12-12 2019-07-09 Lockheed Martin Corporation Vector magnetometry localization of subsurface liquids
US10359479B2 (en) 2017-02-20 2019-07-23 Lockheed Martin Corporation Efficient thermal drift compensation in DNV vector magnetometry
US10228429B2 (en) 2017-03-24 2019-03-12 Lockheed Martin Corporation Apparatus and method for resonance magneto-optical defect center material pulsed mode referencing
US10330744B2 (en) 2017-03-24 2019-06-25 Lockheed Martin Corporation Magnetometer with a waveguide
US10371760B2 (en) 2017-03-24 2019-08-06 Lockheed Martin Corporation Standing-wave radio frequency exciter
US10274550B2 (en) 2017-03-24 2019-04-30 Lockheed Martin Corporation High speed sequential cancellation for pulsed mode
US10459041B2 (en) 2017-03-24 2019-10-29 Lockheed Martin Corporation Magnetic detection system with highly integrated diamond nitrogen vacancy sensor
US10338164B2 (en) 2017-03-24 2019-07-02 Lockheed Martin Corporation Vacancy center material with highly efficient RF excitation
US10379174B2 (en) 2017-03-24 2019-08-13 Lockheed Martin Corporation Bias magnet array for magnetometer
US10408890B2 (en) 2017-03-24 2019-09-10 Lockheed Martin Corporation Pulsed RF methods for optimization of CW measurements
US10145910B2 (en) 2017-03-24 2018-12-04 Lockheed Martin Corporation Photodetector circuit saturation mitigation for magneto-optical high intensity pulses

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1088469A (en) * 1964-02-13 1967-10-25 Charles George Mcburney Method and underwater streamer apparatus for improving the fidelity of recorded seismic signals
GB2184237A (en) * 1985-10-21 1987-06-17 Plessey Co Plc Acoustic wave sensing systems

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4297887A (en) * 1980-02-19 1981-11-03 The United States Of America As Represented By The Secretary Of The Navy High-sensitivity, low-noise, remote optical fiber
US4363114A (en) * 1981-01-21 1982-12-07 The United States Of America As Represented By The Secretary Of The Navy Low noise remote optical fiber sound detector
GB2126820B (en) * 1982-07-17 1986-03-26 Plessey Co Plc An optical sensing system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1088469A (en) * 1964-02-13 1967-10-25 Charles George Mcburney Method and underwater streamer apparatus for improving the fidelity of recorded seismic signals
GB2184237A (en) * 1985-10-21 1987-06-17 Plessey Co Plc Acoustic wave sensing systems

Also Published As

Publication number Publication date
GB2197953A (en) 1988-06-02
WO1988004032A1 (en) 1988-06-02
GB8628367D0 (en) 1987-07-08
EP0298090A1 (en) 1989-01-11
AU8238487A (en) 1988-06-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19931127