GB2022840A - Capacitive Displacement Transducer - Google Patents

Capacitive Displacement Transducer

Info

Publication number
GB2022840A
GB2022840A GB7918862A GB7918862A GB2022840A GB 2022840 A GB2022840 A GB 2022840A GB 7918862 A GB7918862 A GB 7918862A GB 7918862 A GB7918862 A GB 7918862A GB 2022840 A GB2022840 A GB 2022840A
Authority
GB
United Kingdom
Prior art keywords
electrodes
members
displacement transducer
capacitive displacement
sapphire
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
GB7918862A
Other versions
GB2022840B (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.)
AUTOMATIC SYSTEMS LAB Ltd
AUTOMATIC SYSTEMS LABORATORIES Ltd
Original Assignee
AUTOMATIC SYSTEMS LAB Ltd
AUTOMATIC SYSTEMS LABORATORIES 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 AUTOMATIC SYSTEMS LAB Ltd, AUTOMATIC SYSTEMS LABORATORIES Ltd filed Critical AUTOMATIC SYSTEMS LAB Ltd
Priority to GB7918862A priority Critical patent/GB2022840B/en
Publication of GB2022840A publication Critical patent/GB2022840A/en
Application granted granted Critical
Publication of GB2022840B publication Critical patent/GB2022840B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01D5/12—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 using electric or magnetic means
    • G01D5/14—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 using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/24—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 using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
    • G01D5/241—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 using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance by relative movement of capacitor electrodes
    • G01D5/2412—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 using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance by relative movement of capacitor electrodes by varying overlap

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

To avoid relative displacement of its electrodes due to mechanical shock or high temperature a capacitative displacement transducer comprises means 9 moveable relative to two electrodes, as 8 and 7, to vary the capacitance between them, the electrodes being mounted within housing 10 by members 4, 5 permitting relative movement between the electrodes and the members and springs 12, 18 urging the electrodes and members against one another. The spheres 4 and 5 are preferably made of ceramic material or sapphire and arranged in groups equiangularly spaced at 120 DEG and arranged in cup-shaped depressions in the end walls of electrodes 8, 6 and 7, support plate 3 and support rings 11 and 19. <IMAGE>
GB7918862A 1978-05-31 1979-05-30 Capacitve displacement transducer Expired GB2022840B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7918862A GB2022840B (en) 1978-05-31 1979-05-30 Capacitve displacement transducer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2593378 1978-05-31
GB7918862A GB2022840B (en) 1978-05-31 1979-05-30 Capacitve displacement transducer

Publications (2)

Publication Number Publication Date
GB2022840A true GB2022840A (en) 1979-12-19
GB2022840B GB2022840B (en) 1982-10-13

Family

ID=26257959

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7918862A Expired GB2022840B (en) 1978-05-31 1979-05-30 Capacitve displacement transducer

Country Status (1)

Country Link
GB (1) GB2022840B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2552539A1 (en) * 1983-09-24 1985-03-29 Boge Gmbh DEVICE FOR DETERMINING THE PISTON TRAVEL OF A HYDRAULIC, PNEUMATIC OR HYDROPNEUMATIC APPARATUS
US5237284A (en) * 1988-09-14 1993-08-17 Presidium Promotions Limited Measurement of capacitance and parameters related thereto for determining displacement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2552539A1 (en) * 1983-09-24 1985-03-29 Boge Gmbh DEVICE FOR DETERMINING THE PISTON TRAVEL OF A HYDRAULIC, PNEUMATIC OR HYDROPNEUMATIC APPARATUS
US5237284A (en) * 1988-09-14 1993-08-17 Presidium Promotions Limited Measurement of capacitance and parameters related thereto for determining displacement

Also Published As

Publication number Publication date
GB2022840B (en) 1982-10-13

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Legal Events

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

Effective date: 19950530