GB2022267A - Rotary displacement capacitive transducer - Google Patents

Rotary displacement capacitive transducer

Info

Publication number
GB2022267A
GB2022267A GB7918861A GB7918861A GB2022267A GB 2022267 A GB2022267 A GB 2022267A GB 7918861 A GB7918861 A GB 7918861A GB 7918861 A GB7918861 A GB 7918861A GB 2022267 A GB2022267 A GB 2022267A
Authority
GB
United Kingdom
Prior art keywords
capacitance
electrodes
rotary displacement
capacitive transducer
displacement capacitive
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
GB7918861A
Other versions
GB2022267B (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 GB7918861A priority Critical patent/GB2022267B/en
Publication of GB2022267A publication Critical patent/GB2022267A/en
Application granted granted Critical
Publication of GB2022267B publication Critical patent/GB2022267B/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)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

A rotary displacement capacitive transducer comprises first and second cylindrical electrodes (1,2) each electrode having inner and outer conducting members (1a, 1b, 2a, 2b) connected together by insulative adhesive (7), and a cylindrical member (3) disposed between the electrodes which in use is rotated to vary the capacitance between the electrodes. The surfaces (1a, 2a) define the capacitance of the transducer. The cylindrical member (3) may be an earthed conductor which by interposition progressively reduces the capacitance between the electrodes, or a dielectric member which progressively increases the capacitance. <IMAGE>
GB7918861A 1978-05-31 1979-05-30 Rotary displacement capacitive transducers Expired GB2022267B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7918861A GB2022267B (en) 1978-05-31 1979-05-30 Rotary displacement capacitive transducers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2593278 1978-05-31
GB7918861A GB2022267B (en) 1978-05-31 1979-05-30 Rotary displacement capacitive transducers

Publications (2)

Publication Number Publication Date
GB2022267A true GB2022267A (en) 1979-12-12
GB2022267B GB2022267B (en) 1982-08-11

Family

ID=26257957

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7918861A Expired GB2022267B (en) 1978-05-31 1979-05-30 Rotary displacement capacitive transducers

Country Status (1)

Country Link
GB (1) GB2022267B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4578868A (en) * 1983-04-01 1986-04-01 Mitutoyo Mfg. Co., Ltd. Digital display measuring apparatus
GB2166554A (en) * 1984-10-29 1986-05-08 Mitutoyo Mfg Co Ltd Electrostatic capacitive type encoder
US4625411A (en) * 1984-06-01 1986-12-02 Nippondenso Co., Ltd. Apparatus for detecting rotation of steering wheel
US4660288A (en) * 1985-08-01 1987-04-28 Johannes Heidenhain Gmbh Coupling device
GB2264784A (en) * 1992-02-26 1993-09-08 Kansei Kk Rotation angle sensor of electrostatic capacitance type
DE19913870A1 (en) * 1999-03-26 2000-10-19 Siemens Ag Positioning sensor used for operating electromagnetic control of valves has a capacitor coupled to a lifting movement

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4578868A (en) * 1983-04-01 1986-04-01 Mitutoyo Mfg. Co., Ltd. Digital display measuring apparatus
US4625411A (en) * 1984-06-01 1986-12-02 Nippondenso Co., Ltd. Apparatus for detecting rotation of steering wheel
GB2166554A (en) * 1984-10-29 1986-05-08 Mitutoyo Mfg Co Ltd Electrostatic capacitive type encoder
US4660288A (en) * 1985-08-01 1987-04-28 Johannes Heidenhain Gmbh Coupling device
GB2264784A (en) * 1992-02-26 1993-09-08 Kansei Kk Rotation angle sensor of electrostatic capacitance type
GB2264784B (en) * 1992-02-26 1995-04-12 Kansei Kk Rotation angle sensor of electrostatic capacitance type
DE19913870A1 (en) * 1999-03-26 2000-10-19 Siemens Ag Positioning sensor used for operating electromagnetic control of valves has a capacitor coupled to a lifting movement

Also Published As

Publication number Publication date
GB2022267B (en) 1982-08-11

Similar Documents

Publication Publication Date Title
DE3575058D1 (en) CAPACITIVE DIAPHRAGM SWITCH.
FR2471659B1 (en)
ES444232A1 (en) Electrostatic position-measuring transducer
EP0172784A3 (en) Surface-area pressure transducer and line-selection circuit for use therewith
MY113984A (en) Multilayer through type capacitor array
AU543967B2 (en) Conductive adhesive and biomedical electrode
SE9700910D0 (en) Laminated symmetry transformer
GB2312327A (en) Buried layer capacitor
JPS6450488A (en) Piezoelectric tranducer with coaxial sensitive element
GB2139813B (en) Electric double layer capacitor
JPS6488128A (en) Temperature sensor
GB2022267A (en) Rotary displacement capacitive transducer
US4268889A (en) Rotary displacement capacitive transducers
GB1159152A (en) Improvements in or relating to Electric Circuit Components
EP0094873A3 (en) Improved conductive foils for solid dielectric capacitor
SE8200021L (en) LOW FREQUENCY COAXIAL CABLE PASS FILTER
BR9304411A (en) Ribbon filter and method of applying it to an electrical connector
GB2010582A (en) Low impedance capacitor
JPS6338005U (en)
JP2743537B2 (en) Voltage dividing capacitor
ES478750A1 (en) Single pleat metallized film capacitor with sprayed edge terminations
FR2592871A1 (en) Ozone generator
JPS58124945U (en) capacitor
VRANISH Capaciflector camera(Patent Application)
JPS6383802U (en)

Legal Events

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

Effective date: 19980530