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GB1061761A - Apparatus for measuring linear or angular displacements - Google Patents

Apparatus for measuring linear or angular displacements

Info

Publication number
GB1061761A
GB1061761A GB33710/63A GB3371063A GB1061761A GB 1061761 A GB1061761 A GB 1061761A GB 33710/63 A GB33710/63 A GB 33710/63A GB 3371063 A GB3371063 A GB 3371063A GB 1061761 A GB1061761 A GB 1061761A
Authority
GB
United Kingdom
Prior art keywords
capacitors
detector circuit
resistors
diodes
displacement
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
GB33710/63A
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.)
Individual
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
Priority claimed from FR909978A external-priority patent/FR1341664A/en
Priority claimed from FR930124A external-priority patent/FR83384E/en
Application filed by Individual filed Critical Individual
Publication of GB1061761A publication Critical patent/GB1061761A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
    • 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
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • 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
    • G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
    • 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
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
    • G01R17/10—AC or DC measuring bridges

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

1, 061, 761. Measuring displacements electrically. P. ALAIS. Aug. 26, 1963 [Sept.20, 1962; April 2, 1963], No.33710/63. Heading G1N. A device for measuring linear or angular displacements or vibrations consists of two capacitors C1, C2, varied differentially by the displacement to be measured, and a differential detector circuit including two rectifiers 2 connected with opposite polarities to a common junction. A common terminal 4 of the capacitors is connected to a source of high frequency oscillations and the impedance of the detector circuit is arranged to be such that terminals 3 of the capacitors are substantially at earth potential. The D.C. voltage appearing at V is indicative of the displacement. In a modification diodes 1 are replaced by resistors and in a second modification the capacitors C1, C2 are coupled to the oscillating current source and to the detector circuit by way of screened lines and the diodes 2 are shunted by capacitors and resistors such that the screened lines are resonant at the operating frequency. The latter arrangement is stated to be of use when the temperature of capacitors C1, C2 is subject to variations.
GB33710/63A 1962-09-20 1963-08-26 Apparatus for measuring linear or angular displacements Expired GB1061761A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR909978A FR1341664A (en) 1962-09-20 1962-09-20 Device for measuring linear or angular displacements
FR930124A FR83384E (en) 1963-04-02 1963-04-02 Device for measuring linear or angular displacements

Publications (1)

Publication Number Publication Date
GB1061761A true GB1061761A (en) 1967-03-15

Family

ID=26197618

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33710/63A Expired GB1061761A (en) 1962-09-20 1963-08-26 Apparatus for measuring linear or angular displacements

Country Status (3)

Country Link
DE (1) DE1448744B2 (en)
GB (1) GB1061761A (en)
LU (1) LU44248A1 (en)

Also Published As

Publication number Publication date
DE1448744B2 (en) 1972-04-06
LU44248A1 (en) 1963-10-10
DE1448744A1 (en) 1969-12-04

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