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JPS5627604A - Displacement detector - Google Patents

Displacement detector

Info

Publication number
JPS5627604A
JPS5627604A JP10280679A JP10280679A JPS5627604A JP S5627604 A JPS5627604 A JP S5627604A JP 10280679 A JP10280679 A JP 10280679A JP 10280679 A JP10280679 A JP 10280679A JP S5627604 A JPS5627604 A JP S5627604A
Authority
JP
Japan
Prior art keywords
magnetic
magnetic field
resistance element
interface
parallel
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
JP10280679A
Other languages
Japanese (ja)
Other versions
JPS6034048B2 (en
Inventor
Hiroshi Nagase
Yoshihisa Harada
Kunitoshi Nishikawa
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.)
Toyota Central R&D Labs Inc
Original Assignee
Toyota Central R&D Labs Inc
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 Toyota Central R&D Labs Inc filed Critical Toyota Central R&D Labs Inc
Priority to JP10280679A priority Critical patent/JPS6034048B2/en
Publication of JPS5627604A publication Critical patent/JPS5627604A/en
Publication of JPS6034048B2 publication Critical patent/JPS6034048B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

PURPOSE: To accomplish the precise measurement of fine displacement by detecting the displacement with respect to the interface of the magnetic field of a magnetic resistance element from changes in the resistance of the element provided on the interface of two magnetic fields intersected to each other in such a manner that the main current passage is parallel to one magnetic field thereof.
CONSTITUTION: The magnetic resistance element 1 has a ferromagnetic thin metal film 1b and electrodes 1c and 1d on the substrate 1a. The first magnetic field 2 and the second magnetic field 3 are provided, one parallel to and the other perpendicular to the length of the magnetic resistance element in such a manner that the magnetic field intensity is high enough to magnetize the magnetic resistance element 1 saturatedly. A constant voltage power source 5 is connected to the element 1 to check voltage changes of a series resistance 4 whereby detection is made on how the magnetic resistance element displaces from the interface between the first and second magnetic fields. This is accomplished because the resistance of the magnetic resistance element 1 reaches its maximum in the magnetic field parallel to the main current while its minimum in the magnetic field perpendicular thereto. This enables precise measurement of the fine displacement contactless.
COPYRIGHT: (C)1981,JPO&Japio
JP10280679A 1979-08-14 1979-08-14 displacement detection device Expired JPS6034048B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10280679A JPS6034048B2 (en) 1979-08-14 1979-08-14 displacement detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10280679A JPS6034048B2 (en) 1979-08-14 1979-08-14 displacement detection device

Publications (2)

Publication Number Publication Date
JPS5627604A true JPS5627604A (en) 1981-03-18
JPS6034048B2 JPS6034048B2 (en) 1985-08-06

Family

ID=14337293

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10280679A Expired JPS6034048B2 (en) 1979-08-14 1979-08-14 displacement detection device

Country Status (1)

Country Link
JP (1) JPS6034048B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4677377A (en) * 1984-08-10 1987-06-30 Hitachi, Ltd. Position-detecting sensor for detecting position of a moving object utilizing magnetism
US4713613A (en) * 1983-10-19 1987-12-15 Hitachi, Ltd. Device for magnetically detecting displacement of non-magnetic movable member
JP2005308432A (en) * 2004-04-19 2005-11-04 Matsushita Electric Ind Co Ltd Position detection sensor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63192102U (en) * 1987-05-29 1988-12-12

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4713613A (en) * 1983-10-19 1987-12-15 Hitachi, Ltd. Device for magnetically detecting displacement of non-magnetic movable member
US4677377A (en) * 1984-08-10 1987-06-30 Hitachi, Ltd. Position-detecting sensor for detecting position of a moving object utilizing magnetism
JP2005308432A (en) * 2004-04-19 2005-11-04 Matsushita Electric Ind Co Ltd Position detection sensor

Also Published As

Publication number Publication date
JPS6034048B2 (en) 1985-08-06

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