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GB1321831A - Positional transducers - Google Patents

Positional transducers

Info

Publication number
GB1321831A
GB1321831A GB3138069A GB1321831DA GB1321831A GB 1321831 A GB1321831 A GB 1321831A GB 3138069 A GB3138069 A GB 3138069A GB 1321831D A GB1321831D A GB 1321831DA GB 1321831 A GB1321831 A GB 1321831A
Authority
GB
United Kingdom
Prior art keywords
base plate
sensor electrode
reference electrodes
june
matrix
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.)
Expired
Application number
GB3138069A
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.)
NAT RES DEV
National Research Development Corp UK
Original Assignee
NAT RES DEV
National Research Development Corp UK
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 NAT RES DEV, National Research Development Corp UK filed Critical NAT RES DEV
Publication of GB1321831A publication Critical patent/GB1321831A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/004—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring coordinates of points
    • 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

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

Abstract

1321831 Positional transducers NATIONAL RESEARCH DEVELOPMENT CORP 11 June 1970 [20 June 1969] 31380/69 Heading G1N A transducer for obtaining the x, y co-ordinates of the position of a movable member comprises a matrix of square reference electrodes 2 Fig.2a on one face of an insulating base plate (not shown) and a square sensor electrode 3 on the other face of the base plate. The reference electrodes are individually fed with a voltage that progresses in the two co-ordinate directions, supplied alternately at a fixed frequency, whereby the voltages picked up on the sensor electrode are alternately indicative of the x and y displacement. After a coarse measurement the reference voltage may be applied only to the reference electrodes in the immediate vicinity of the sensor electrode to increase sensitivity. The matrix may be mounted on a flat or cylindrical base plate.
GB3138069A 1969-06-20 1969-06-20 Positional transducers Expired GB1321831A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3138069 1969-06-20

Publications (1)

Publication Number Publication Date
GB1321831A true GB1321831A (en) 1973-07-04

Family

ID=10322230

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3138069A Expired GB1321831A (en) 1969-06-20 1969-06-20 Positional transducers

Country Status (1)

Country Link
GB (1) GB1321831A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023732A1 (en) * 1979-07-17 1981-02-11 Willem Christiaan Heerens Capacitive gauge
US4554767A (en) * 1981-02-05 1985-11-26 Ikonomou Aristarchos S Earthquake guarding system
EP0264047A3 (en) * 1986-10-13 1989-07-19 Peter Seitz Capacitive measuring device for determination of forces capacitive measuring device for determination of forces and/or pressures and/or pressures

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023732A1 (en) * 1979-07-17 1981-02-11 Willem Christiaan Heerens Capacitive gauge
US4554767A (en) * 1981-02-05 1985-11-26 Ikonomou Aristarchos S Earthquake guarding system
EP0264047A3 (en) * 1986-10-13 1989-07-19 Peter Seitz Capacitive measuring device for determination of forces capacitive measuring device for determination of forces and/or pressures and/or pressures
JPH0799346B2 (en) 1986-10-13 1995-10-25 ザイツ ペーテル Volume measurement assembly

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Legal Events

Date Code Title Description
PLNP Patent lapsed through nonpayment of renewal fees