JPS57122312A - Linear displacement sensor - Google Patents

Linear displacement sensor

Info

Publication number
JPS57122312A
JPS57122312A JP827881A JP827881A JPS57122312A JP S57122312 A JPS57122312 A JP S57122312A JP 827881 A JP827881 A JP 827881A JP 827881 A JP827881 A JP 827881A JP S57122312 A JPS57122312 A JP S57122312A
Authority
JP
Japan
Prior art keywords
linearity
elements
linear displacement
displacement sensor
resistances
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
JP827881A
Other languages
Japanese (ja)
Inventor
Kohei Fujii
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.)
NEC Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
Nippon Electric Co Ltd
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 NEC Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP827881A priority Critical patent/JPS57122312A/en
Publication of JPS57122312A publication Critical patent/JPS57122312A/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
    • G01D5/142—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 using Hall-effect devices
    • G01D5/145—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 using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields

Landscapes

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

Abstract

PURPOSE:To improve symmetry and linearity and obtain a linear displacement sensor with a small size and high reliability by installing a magnetism/electricity conversion element opposite to a pair of magnetic poles of a magnetism generating body and connecting them so as to add outputs of both. CONSTITUTION:A pair of magnetic reluctance effect (MR) elements 6 and 7 are arranged at the N pole and S pole of a magnet 5, and each of electric current terminals m, n and m', n' is connected to the electric power source 8, and the output terminals a and a' are connected to an amplifier 9 to form a bridge circuit comprising resistances R1, R2 and resistances R3 and R4 of the MR elements 6 and 7. An output is obtained at the amplifier 9 by the relative displacement between MR elements 6 and 7 and the magnet 5. With this arrangement the symmetry and linearity are improved and a linearity sensor with a small size and high reliability is obtained.
JP827881A 1981-01-21 1981-01-21 Linear displacement sensor Pending JPS57122312A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP827881A JPS57122312A (en) 1981-01-21 1981-01-21 Linear displacement sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP827881A JPS57122312A (en) 1981-01-21 1981-01-21 Linear displacement sensor

Publications (1)

Publication Number Publication Date
JPS57122312A true JPS57122312A (en) 1982-07-30

Family

ID=11688708

Family Applications (1)

Application Number Title Priority Date Filing Date
JP827881A Pending JPS57122312A (en) 1981-01-21 1981-01-21 Linear displacement sensor

Country Status (1)

Country Link
JP (1) JPS57122312A (en)

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