JPS56135111A - Impedance-type displacement converter - Google Patents

Impedance-type displacement converter

Info

Publication number
JPS56135111A
JPS56135111A JP3870480A JP3870480A JPS56135111A JP S56135111 A JPS56135111 A JP S56135111A JP 3870480 A JP3870480 A JP 3870480A JP 3870480 A JP3870480 A JP 3870480A JP S56135111 A JPS56135111 A JP S56135111A
Authority
JP
Japan
Prior art keywords
output
nonrectilinearity
voltage
feedback circuit
properties
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.)
Pending
Application number
JP3870480A
Other languages
Japanese (ja)
Inventor
Tadashi Azegami
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.)
Yokogawa Electric Corp
Original Assignee
Hokushin Electric Works Ltd
Yokogawa Hokushin Electric Corp
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 Hokushin Electric Works Ltd, Yokogawa Hokushin Electric Corp filed Critical Hokushin Electric Works Ltd
Priority to JP3870480A priority Critical patent/JPS56135111A/en
Publication of JPS56135111A publication Critical patent/JPS56135111A/en
Pending 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

PURPOSE:To substitute nonrectilinear conversion properties with rectilinear conversion properties with a simple constitution by compensating for the output characteristic with the help of a feedback circuit. CONSTITUTION:An output high-frequency signal from a charge & discharge-type oscillator OSC is applied to a sensor SS through the intermediary of an oscillation switch SW1 by means of FET. In addition, an output from OSC is supplied to a ring counter CT to control the SW1 with an output of a fixed period. Each capacity between a fixed electrode and a movable electrode of SS differentially changes according to a physical value and a high frequency output alternately generates from the movable electrode, being converted to a DC voltage by a detection part DT. This DC voltage is branched by means of a sampling switch SW2 and then is output to an output part OT. An output from OT is fed back to DT through a feedback circuit FB, a control part AC and a variable capacity element VC, giving a concave nonrectilinearity to input/output properties after DT. Thus the convex nonrectilinearity of SS is compensated for.
JP3870480A 1980-03-26 1980-03-26 Impedance-type displacement converter Pending JPS56135111A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3870480A JPS56135111A (en) 1980-03-26 1980-03-26 Impedance-type displacement converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3870480A JPS56135111A (en) 1980-03-26 1980-03-26 Impedance-type displacement converter

Publications (1)

Publication Number Publication Date
JPS56135111A true JPS56135111A (en) 1981-10-22

Family

ID=12532694

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3870480A Pending JPS56135111A (en) 1980-03-26 1980-03-26 Impedance-type displacement converter

Country Status (1)

Country Link
JP (1) JPS56135111A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62267636A (en) * 1986-05-05 1987-11-20 テキサス　インスツルメンツ　インコ−ポレイテツド Sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62267636A (en) * 1986-05-05 1987-11-20 テキサス　インスツルメンツ　インコ−ポレイテツド Sensor

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