JPS57197418A - Displacement measuring device - Google Patents

Displacement measuring device

Info

Publication number
JPS57197418A
JPS57197418A JP8196181A JP8196181A JPS57197418A JP S57197418 A JPS57197418 A JP S57197418A JP 8196181 A JP8196181 A JP 8196181A JP 8196181 A JP8196181 A JP 8196181A JP S57197418 A JPS57197418 A JP S57197418A
Authority
JP
Japan
Prior art keywords
signal
displacement
measuring device
difference
constitution
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
JP8196181A
Other languages
Japanese (ja)
Other versions
JPS6412328B2 (en
Inventor
Kazuo Ume
Yasumoto Suzuki
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.)
Anritsu Corp
Original Assignee
Anritsu 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 Anritsu Corp filed Critical Anritsu Corp
Priority to JP8196181A priority Critical patent/JPS57197418A/en
Publication of JPS57197418A publication Critical patent/JPS57197418A/en
Publication of JPS6412328B2 publication Critical patent/JPS6412328B2/ja
Granted 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
    • G01D5/20—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 inductance, e.g. by a movable armature
    • G01D5/22—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 inductance, e.g. by a movable armature differentially influencing two coils

Landscapes

  • 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

PURPOSE:To obtain a displacement measuring device with an improved SN ratio, by providing a displacement detector to a moving core of a differential transformer excited with AC and using a sum signal supplied from both outputs of the secondary coils in differential connection and synchronously detecting the signal difference. CONSTITUTION:An AC exciting power supply 1 is connected to the primary coil 2a of a differential transformer 2, the transformer 2 has a moving core 2c with a displacement detector 2b and an operation circuit 11 is connected to the secondary coils 2d and 2e. The circuit 11 obtains a difference signal C and a sum signal D from outputs A and B of the coils 2d and 2e. The signal C is inputted to a synchronizing detector 4 via an amplifier 3 and synchronously detected by using the signal D. Through this constitution, the difference signal is zero at the core zero position, and the displacement measurement can be made with high accuracy and an improved S/N ratio.
JP8196181A 1981-05-29 1981-05-29 Displacement measuring device Granted JPS57197418A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8196181A JPS57197418A (en) 1981-05-29 1981-05-29 Displacement measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8196181A JPS57197418A (en) 1981-05-29 1981-05-29 Displacement measuring device

Publications (2)

Publication Number Publication Date
JPS57197418A true JPS57197418A (en) 1982-12-03
JPS6412328B2 JPS6412328B2 (en) 1989-02-28

Family

ID=13761094

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8196181A Granted JPS57197418A (en) 1981-05-29 1981-05-29 Displacement measuring device

Country Status (1)

Country Link
JP (1) JPS57197418A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6193909A (en) * 1984-10-15 1986-05-12 Sankusu Kk Synchronous rectifire circuit for differential transformer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6193909A (en) * 1984-10-15 1986-05-12 Sankusu Kk Synchronous rectifire circuit for differential transformer

Also Published As

Publication number Publication date
JPS6412328B2 (en) 1989-02-28

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