JPS5635012A - Displacement converter - Google Patents

Displacement converter

Info

Publication number
JPS5635012A
JPS5635012A JP11089579A JP11089579A JPS5635012A JP S5635012 A JPS5635012 A JP S5635012A JP 11089579 A JP11089579 A JP 11089579A JP 11089579 A JP11089579 A JP 11089579A JP S5635012 A JPS5635012 A JP S5635012A
Authority
JP
Japan
Prior art keywords
signal
capacitance
fed
displacement
fixed
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
JP11089579A
Other languages
Japanese (ja)
Inventor
Atsushi Kimura
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 JP11089579A priority Critical patent/JPS5635012A/en
Publication of JPS5635012A publication Critical patent/JPS5635012A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measuring Fluid Pressure (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

PURPOSE: To obtain the output linear to the measuring value, by applying AC signal to the fixed and variable capacitance sections of the capacitance type displacement detector having the fixed capacitance and the variable capacitance and controlling the amplitude of AC signal to obtain constant difference signal.
CONSTITUTION: AC signal is fed to the variable capacitance section C2 and the fixed capacitance section C1 in which the capacitance is changed on displacement, from the oscillator 20 and the AC signal flowing to the respective capacitance section is half-wave-rectified D1, D2 and the detection signal is fed to the control means 21. The oscillator 20 is controlled so that this detection signal is always at a given value, the voltage e2 produced at the resistor R2 is given to the inverting input terminal of the operational amplifier 25 to control the transistor 26, to change the current I0 in the two-line type transmission line 27, and the signal proportional to the displacement is fed to the receiver installed 28 at a remote location.
COPYRIGHT: (C)1981,JPO&Japio
JP11089579A 1979-08-30 1979-08-30 Displacement converter Pending JPS5635012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11089579A JPS5635012A (en) 1979-08-30 1979-08-30 Displacement converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11089579A JPS5635012A (en) 1979-08-30 1979-08-30 Displacement converter

Publications (1)

Publication Number Publication Date
JPS5635012A true JPS5635012A (en) 1981-04-07

Family

ID=14547401

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11089579A Pending JPS5635012A (en) 1979-08-30 1979-08-30 Displacement converter

Country Status (1)

Country Link
JP (1) JPS5635012A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59173703A (en) * 1983-03-23 1984-10-01 Yokogawa Hokushin Electric Corp Capacity type converting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59173703A (en) * 1983-03-23 1984-10-01 Yokogawa Hokushin Electric Corp Capacity type converting device
JPH0370767B2 (en) * 1983-03-23 1991-11-08 Yokogawa Electric Corp

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