WO2002010774A3 - Dynamically enhanced fiber optic accelerometer - Google Patents

Dynamically enhanced fiber optic accelerometer Download PDF

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Publication number
WO2002010774A3
WO2002010774A3 PCT/US2001/023436 US0123436W WO0210774A3 WO 2002010774 A3 WO2002010774 A3 WO 2002010774A3 US 0123436 W US0123436 W US 0123436W WO 0210774 A3 WO0210774 A3 WO 0210774A3
Authority
WO
WIPO (PCT)
Prior art keywords
mid
section
fiber optic
optical fiber
coils
Prior art date
Application number
PCT/US2001/023436
Other languages
French (fr)
Other versions
WO2002010774A2 (en
Inventor
Samuel N Fersht
Original Assignee
Litton Systems Inc
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 Litton Systems Inc filed Critical Litton Systems Inc
Priority to CA002415445A priority Critical patent/CA2415445C/en
Priority to EP01957248A priority patent/EP1305641A2/en
Priority to AU2001279012A priority patent/AU2001279012A1/en
Publication of WO2002010774A2 publication Critical patent/WO2002010774A2/en
Publication of WO2002010774A3 publication Critical patent/WO2002010774A3/en
Priority to NO20030441A priority patent/NO20030441L/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/093—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by photoelectric pick-up

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

A fiber optic particle motion accelerometer has a housing with a mid-section mounted therein such that the mid-section flexes in response to acceleration along a sensing axis. A proof mass is mounted to an outer edge of the mid-section. A first spiral-wound optical fiber coil is mounted to a first side of the mid-section and a second spiral-wound optical fiber coil is mounted to a second side of the mid-section. A first hinge is formed in the mid-section adjacent the mounting of the mid-section in the housing, and a second hinge is formed in the mid-section between the proof mass and the first and second fiber optic coils. The optical fiber coils are included in an outerferometer such that acceleration along the sensing axis produces a phase difference between optical signals propagating in the optical fiber coils.
PCT/US2001/023436 2000-07-28 2001-07-25 Dynamically enhanced fiber optic accelerometer WO2002010774A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002415445A CA2415445C (en) 2000-07-28 2001-07-25 Dynamically enhanced fiber optic accelerometer
EP01957248A EP1305641A2 (en) 2000-07-28 2001-07-25 Dynamically enhanced fiber optic accelerometer
AU2001279012A AU2001279012A1 (en) 2000-07-28 2001-07-25 Dynamically enhanced fiber optic particle motion accelerometer
NO20030441A NO20030441L (en) 2000-07-28 2003-01-28 Dynamically enhanced fiber optic particle motion accelerometer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/627,688 US6363786B1 (en) 2000-07-28 2000-07-28 Dynamically enhanced fiber optic particle motion accelerometer
US09/627,688 2000-07-28

Publications (2)

Publication Number Publication Date
WO2002010774A2 WO2002010774A2 (en) 2002-02-07
WO2002010774A3 true WO2002010774A3 (en) 2002-05-23

Family

ID=24515700

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/023436 WO2002010774A2 (en) 2000-07-28 2001-07-25 Dynamically enhanced fiber optic accelerometer

Country Status (6)

Country Link
US (1) US6363786B1 (en)
EP (1) EP1305641A2 (en)
AU (1) AU2001279012A1 (en)
CA (1) CA2415445C (en)
NO (1) NO20030441L (en)
WO (1) WO2002010774A2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2384644A (en) 2002-01-25 2003-07-30 Qinetiq Ltd High sensitivity fibre optic vibration sensing device
US6779402B2 (en) 2002-10-18 2004-08-24 Northrop Grumman Corporation Method and apparatus for measuring acceleration using a fiber optic accelerometer
GB0401053D0 (en) * 2004-01-17 2004-02-18 Qinetiq Ltd Improvements in and relating to accelerometers
FR2888339B1 (en) * 2005-07-07 2007-09-21 Sercel Sa OPTICAL FIBER SEISMIC SENSOR
US7675627B2 (en) * 2007-10-05 2010-03-09 Northrop Grumman Guidance And Electronic Company, Inc. Low cost fiber optic velocity sensor for sonar applications
CN104166014A (en) * 2014-07-31 2014-11-26 清华大学 Acceleration signal obtaining method based on acceleration sensor and acceleration sensor
US10976338B2 (en) * 2017-09-11 2021-04-13 Optilab, Llc Apparatus and method for sensing acceleration or force using fiber Bragg grating (FBG)
CN111323614A (en) * 2020-03-21 2020-06-23 哈尔滨工程大学 Closed-loop disc type optical fiber accelerometer based on moving coil feedback mechanism
CN111650400B (en) * 2020-06-03 2021-05-14 西安交通大学 Miniaturized side surface mounting differential type integrated resonance accelerometer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5287332A (en) * 1992-06-24 1994-02-15 Unisys Corporation Acoustic particle acceleration sensor and array of such sensors
US5369485A (en) * 1991-02-07 1994-11-29 The United States Of America As Represented By The Secretary Of The Navy Fiber optic accelerometer with centrally supported flexural disk
US5883308A (en) * 1997-06-09 1999-03-16 Litton Systems, Inc. Fiber optic twist ring accelerometer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3518383C1 (en) * 1985-05-22 1986-12-04 Boge Gmbh, 5208 Eitorf Accelerometer
US4932258A (en) 1988-06-29 1990-06-12 Sundstrand Data Control, Inc. Stress compensated transducer
US4959539A (en) 1989-03-20 1990-09-25 The United States Of America As Represented By The Secretary Of The Navy Flexural disk fiber optic hydrophone
GB8921370D0 (en) * 1989-09-21 1989-11-08 Smiths Industries Plc Accelerometers
US6175108B1 (en) * 1998-01-30 2001-01-16 Cidra Corporation Accelerometer featuring fiber optic bragg grating sensor for providing multiplexed multi-axis acceleration sensing
US6496264B1 (en) * 2000-07-24 2002-12-17 Northrop Grumman Corporation Fiber optic acoustic sensor with specifically selected flexural disks

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5369485A (en) * 1991-02-07 1994-11-29 The United States Of America As Represented By The Secretary Of The Navy Fiber optic accelerometer with centrally supported flexural disk
US5287332A (en) * 1992-06-24 1994-02-15 Unisys Corporation Acoustic particle acceleration sensor and array of such sensors
US5883308A (en) * 1997-06-09 1999-03-16 Litton Systems, Inc. Fiber optic twist ring accelerometer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1305641A2 *

Also Published As

Publication number Publication date
CA2415445A1 (en) 2002-02-07
NO20030441L (en) 2003-03-28
AU2001279012A1 (en) 2002-02-13
EP1305641A2 (en) 2003-05-02
CA2415445C (en) 2006-07-18
US6363786B1 (en) 2002-04-02
NO20030441D0 (en) 2003-01-28
WO2002010774A2 (en) 2002-02-07

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