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JPS5719613A - Differential sensor - Google Patents

Differential sensor

Info

Publication number
JPS5719613A
JPS5719613A JP9327580A JP9327580A JPS5719613A JP S5719613 A JPS5719613 A JP S5719613A JP 9327580 A JP9327580 A JP 9327580A JP 9327580 A JP9327580 A JP 9327580A JP S5719613 A JPS5719613 A JP S5719613A
Authority
JP
Japan
Prior art keywords
core
permeability
movement
primary coil
sensed
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
JP9327580A
Other languages
Japanese (ja)
Other versions
JPS6259762B2 (en
Inventor
Taro Oshiro
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.)
NOBLE SANGYO KK
Original Assignee
NOBLE SANGYO KK
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 NOBLE SANGYO KK filed Critical NOBLE SANGYO KK
Priority to JP9327580A priority Critical patent/JPS5719613A/en
Priority to GB8121382A priority patent/GB2080632B/en
Publication of JPS5719613A publication Critical patent/JPS5719613A/en
Publication of JPS6259762B2 publication Critical patent/JPS6259762B2/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
    • G01D5/225—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 by influencing the mutual induction between the two coils
    • G01D5/2258—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 by influencing the mutual induction between the two coils by a movable ferromagnetic element, e.g. core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
    • H01F21/06—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by movement of core or part of core relative to the windings as a whole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
    • H01F21/06—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by movement of core or part of core relative to the windings as a whole
    • H01F21/065—Measures for obtaining a desired relation between the position of the core and the inductance

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • 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

PURPOSE: To obtain excellent linearity, by forming a core which is moved in response to the movement of a member to be sensed by a low-permeability, conductive metal in a ring shaped, and arranging a high permeability ferromagnetic body through a ring hole of said core.
CONSTITUTION: The core 12 is moved in response to the movement of the member to be sensed. A primary coil 6 is arranged along the moving path of said core 12 and excited by an AC current. Secondary coils 8 and 9 generate the voltage difference in proportion to the movement of the core 12. The core 12 is formed in a ring shape by the low permeability (specific magnetizing ratio is about 10-3W10-6) conductive metal. The high-permeability ( specific magnetizing ratio is about 103W106) ferromagnetic rod 13, or in some case, pipe, whose length is the same as the total width of the primary coil 6, is arranged through the ring hole 2 of the core 12. A high frequency (about 50KCW2MC) exciting current is applied to the primary coil 6.
COPYRIGHT: (C)1982,JPO&Japio
JP9327580A 1980-07-10 1980-07-10 Differential sensor Granted JPS5719613A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP9327580A JPS5719613A (en) 1980-07-10 1980-07-10 Differential sensor
GB8121382A GB2080632B (en) 1980-07-10 1981-07-10 Differential transformers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9327580A JPS5719613A (en) 1980-07-10 1980-07-10 Differential sensor

Publications (2)

Publication Number Publication Date
JPS5719613A true JPS5719613A (en) 1982-02-01
JPS6259762B2 JPS6259762B2 (en) 1987-12-12

Family

ID=14077882

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9327580A Granted JPS5719613A (en) 1980-07-10 1980-07-10 Differential sensor

Country Status (2)

Country Link
JP (1) JPS5719613A (en)
GB (1) GB2080632B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59105516A (en) * 1982-12-09 1984-06-18 Saburo Nakagoori Differential transformer
JPS60168017A (en) * 1984-02-10 1985-08-31 S G:Kk Linear position detecting device
JPS61198017A (en) * 1985-02-28 1986-09-02 Honda Lock:Kk Differential transformer

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3305403A1 (en) * 1982-10-19 1984-04-19 Saburo Kawaguchi Saitama Chugun DIFFERENTIAL TRANSFORMER AND DIFFERENTIAL TRANSFORMER SYSTEM
DE69410076T2 (en) * 1994-03-21 1998-12-10 Brown & Sharpe Tesa S.A., Renens Tubular coil unit of a displacement sensor
DE102011119981B4 (en) * 2011-12-02 2014-02-27 Krohne Messtechnik Gmbh Vortex flowmeter
CN112762810A (en) * 2021-01-21 2021-05-07 江门职业技术学院 Cylindrical linear displacement sensor
EP4253915B1 (en) 2022-03-30 2025-09-10 Crompton Technology Group Limited Composite cylinder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59105516A (en) * 1982-12-09 1984-06-18 Saburo Nakagoori Differential transformer
JPS60168017A (en) * 1984-02-10 1985-08-31 S G:Kk Linear position detecting device
JPS61198017A (en) * 1985-02-28 1986-09-02 Honda Lock:Kk Differential transformer

Also Published As

Publication number Publication date
JPS6259762B2 (en) 1987-12-12
GB2080632A (en) 1982-02-03
GB2080632B (en) 1984-10-24

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