CA2531266A1 - Optical inclination sensor - Google Patents

Optical inclination sensor Download PDF

Info

Publication number
CA2531266A1
CA2531266A1 CA002531266A CA2531266A CA2531266A1 CA 2531266 A1 CA2531266 A1 CA 2531266A1 CA 002531266 A CA002531266 A CA 002531266A CA 2531266 A CA2531266 A CA 2531266A CA 2531266 A1 CA2531266 A1 CA 2531266A1
Authority
CA
Canada
Prior art keywords
housing
mass
respect
optical
reflective surface
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.)
Granted
Application number
CA002531266A
Other languages
French (fr)
Other versions
CA2531266C (en
Inventor
Brooks A. Childers
Clark Davis Boyd
Norman Wayne Ritchie
Stephen E. Hester
Paul Samuel Zerwekh
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.)
Baker Hughes Holdings LLC
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CA002646435A priority Critical patent/CA2646435A1/en
Publication of CA2531266A1 publication Critical patent/CA2531266A1/en
Application granted granted Critical
Publication of CA2531266C publication Critical patent/CA2531266C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/02—Details
    • G01C9/06—Electric or photoelectric indication or reading means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
    • G01C9/20—Measuring inclination, e.g. by clinometers, by levels by using liquids the indication being based on the inclination of the surface of a liquid relative to its container
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING 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
    • G01D5/00—Mechanical 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
    • G01D5/26—Mechanical 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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/268—Mechanical 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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light using optical fibres
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/02—Details
    • G01C9/06—Electric or photoelectric indication or reading means
    • G01C2009/066—Electric or photoelectric indication or reading means optical

Abstract

An optical inclination sensor is provided having at least one reflective surface and at least two separate optical fibers having ends spaced from a reflective surface. As the reflective surface tilts with respect to a pre-determined reference position the gap lengths between the fiber ends and the reflective surface change and the differences in these gap lengths is used to calculate an angle of inclination with respect to a reference position. The optical inclination sensor can include at least one mass attached to a housing and moveable with respect to the housing as the mass and housing are rotated about one or more axes. Optical strain sensors are disposed a various locations between the mass and housing so that as the mass moves with respect to the housing, each one of the optical strain sensors are placed in compression or tension. The housing can be a generally u-shaped housing having two arms and a base section with the mass disposed within the housing. Alternatively, the housing includes a first beam, and the mass is a second beam arranged generally orthogonal to the first beam and pivotally attached thereto. The optical strain sensors are disposed between the first beam and the second beam. The optical strain sensors are placed in tension or compression as the second beam pivots with respect to the first beam.
CA002531266A 2004-12-23 2005-12-21 Optical inclination sensor Expired - Fee Related CA2531266C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002646435A CA2646435A1 (en) 2004-12-23 2005-12-21 Optical inclination sensor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/020,956 US7319514B2 (en) 2004-12-23 2004-12-23 Optical inclination sensor
US11/020,956 2004-12-23

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA002646435A Division CA2646435A1 (en) 2004-12-23 2005-12-21 Optical inclination sensor

Publications (2)

Publication Number Publication Date
CA2531266A1 true CA2531266A1 (en) 2006-06-23
CA2531266C CA2531266C (en) 2009-02-24

Family

ID=35841193

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002531266A Expired - Fee Related CA2531266C (en) 2004-12-23 2005-12-21 Optical inclination sensor
CA002646435A Abandoned CA2646435A1 (en) 2004-12-23 2005-12-21 Optical inclination sensor

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA002646435A Abandoned CA2646435A1 (en) 2004-12-23 2005-12-21 Optical inclination sensor

Country Status (3)

Country Link
US (2) US7319514B2 (en)
CA (2) CA2531266C (en)
GB (1) GB2421790B (en)

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BR102013006794B1 (en) * 2013-03-25 2022-11-01 Luxtec - Sistemas Ópticos Ltda - Me MULTIPARAMETRIC DEVICE FOR MEASURING, BY OPTICAL MEANS, THE FILLING LEVEL OF TANKS AND RESERVOIRS FOR LIQUIDS AND LIQUEFIEDS, REFRACTIVE INDEX AND IMAGE ANALYSIS, WITHOUT MOVING PARTS
CN104089927A (en) * 2014-07-23 2014-10-08 中国计量学院 Temperature insensitive solution concentration sensor based on semi-corrosion optical fiber grating
CN105588541B (en) * 2014-10-21 2018-04-06 陕西重型汽车有限公司 Body gesture gathers measurement apparatus, Vehicular intelligent networked control systems and vehicle in real time
CN105737798B (en) 2016-02-01 2019-02-19 苏州弘开传感科技有限公司 A kind of sensor based on Fabry Perot principle
CN106370159B (en) * 2016-09-30 2018-09-18 重庆工程职业技术学院 A kind of intelligent engineering Construction Quality levelness detector
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CN108818188A (en) * 2018-06-06 2018-11-16 太仓鉴崧实业有限公司 A kind of grinder and its working method with support construction
CN108917656A (en) * 2018-07-24 2018-11-30 蚌埠学院 A kind of Multi-Axis Fiber Bragg Gratings inclination sensor
CN109029360B (en) * 2018-09-10 2020-07-10 曲阜师范大学 Optical fiber one-way level gauge based on interference principle
CN109029359B (en) * 2018-09-10 2020-07-10 曲阜师范大学 Optical fiber tilt angle sensor based on interference principle
CN109029361B (en) * 2018-09-10 2020-07-10 曲阜师范大学 Optical fiber level gauge based on interference principle
US10852132B1 (en) * 2019-05-17 2020-12-01 Chunwei Zhang Fiber bragg grating inclination sensor
CN112484669B (en) * 2020-12-10 2022-05-06 哈尔滨工业大学 Small-size two-dimensional vector optical fiber inclination angle sensing probe and sensing device

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Also Published As

Publication number Publication date
US20090051905A1 (en) 2009-02-26
US20060139626A1 (en) 2006-06-29
US7319514B2 (en) 2008-01-15
GB2421790A (en) 2006-07-05
US7719690B2 (en) 2010-05-18
GB0526390D0 (en) 2006-02-08
CA2531266C (en) 2009-02-24
GB2421790B (en) 2007-07-25
CA2646435A1 (en) 2006-06-23

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Legal Events

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EEER Examination request
MKLA Lapsed

Effective date: 20121221