GB8719591D0 - Mechanical oscillator - Google Patents

Mechanical oscillator

Info

Publication number
GB8719591D0
GB8719591D0 GB878719591A GB8719591A GB8719591D0 GB 8719591 D0 GB8719591 D0 GB 8719591D0 GB 878719591 A GB878719591 A GB 878719591A GB 8719591 A GB8719591 A GB 8719591A GB 8719591 D0 GB8719591 D0 GB 8719591D0
Authority
GB
United Kingdom
Prior art keywords
mechanical oscillator
oscillator
mechanical
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
GB878719591A
Other versions
GB2208931B (en
GB2208931A (en
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.)
STC PLC
Original Assignee
STC PLC
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 STC PLC filed Critical STC PLC
Priority to GB8719591A priority Critical patent/GB2208931B/en
Publication of GB8719591D0 publication Critical patent/GB8719591D0/en
Publication of GB2208931A publication Critical patent/GB2208931A/en
Application granted granted Critical
Publication of GB2208931B publication Critical patent/GB2208931B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/18—Measuring force or stress, in general using properties of piezo-resistive materials, i.e. materials of which the ohmic resistance varies according to changes in magnitude or direction of force applied to the material
    • G01L1/183—Measuring force or stress, in general using properties of piezo-resistive materials, i.e. materials of which the ohmic resistance varies according to changes in magnitude or direction of force applied to the material by measuring variations of frequency of vibrating piezo-resistive material
    • G01L1/186—Measuring force or stress, in general using properties of piezo-resistive materials, i.e. materials of which the ohmic resistance varies according to changes in magnitude or direction of force applied to the material by measuring variations of frequency of vibrating piezo-resistive material optical excitation or measuring of vibrations
    • 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
    • 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
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
    • G01L11/02—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by optical means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
    • G01L9/0008—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations
    • G01L9/0019—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations of a semiconductive element
    • G01L9/002—Optical excitation or measuring

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Integrated Circuits (AREA)
GB8719591A 1987-08-19 1987-08-19 Mechanical oscilattor Expired - Fee Related GB2208931B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8719591A GB2208931B (en) 1987-08-19 1987-08-19 Mechanical oscilattor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8719591A GB2208931B (en) 1987-08-19 1987-08-19 Mechanical oscilattor

Publications (3)

Publication Number Publication Date
GB8719591D0 true GB8719591D0 (en) 1987-09-23
GB2208931A GB2208931A (en) 1989-04-19
GB2208931B GB2208931B (en) 1991-06-26

Family

ID=10622496

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8719591A Expired - Fee Related GB2208931B (en) 1987-08-19 1987-08-19 Mechanical oscilattor

Country Status (1)

Country Link
GB (1) GB2208931B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4972076A (en) * 1988-09-29 1990-11-20 Schlumberger Industries Limited Solid state sensor with dual resonant vibratable members
EP0419021A3 (en) * 1989-08-30 1991-10-09 Schlumberger Industries Limited Sensors with vibrating elements
GB2235773B (en) * 1989-08-30 1993-12-22 Schlumberger Ind Ltd Sensors
FR2729232A1 (en) * 1995-01-10 1996-07-12 Commissariat Energie Atomique OPTICAL DEVICE FOR OPTOMECHANICAL APPLICATION
FR2792410B1 (en) * 1999-04-14 2001-06-22 Schlumberger Services Petrol MANOMETER PRESSURE MEASUREMENT METHOD WITH RESONANT ELEMENT

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8323685D0 (en) * 1983-09-03 1983-10-05 Gen Electric Co Plc Monitoring displacement
GB8418122D0 (en) * 1984-07-17 1984-08-22 Standard Telephones Cables Ltd Optical sensor systems
GB2182433B (en) * 1985-11-02 1989-10-25 Stc Plc Remote sensor
GB8530809D0 (en) * 1985-12-13 1986-01-22 Gen Electric Co Plc Sensor

Also Published As

Publication number Publication date
GB2208931B (en) 1991-06-26
GB2208931A (en) 1989-04-19

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Legal Events

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