WO2008102786A1 - 磁気検出装置 - Google Patents

磁気検出装置 Download PDF

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Publication number
WO2008102786A1
WO2008102786A1 PCT/JP2008/052805 JP2008052805W WO2008102786A1 WO 2008102786 A1 WO2008102786 A1 WO 2008102786A1 JP 2008052805 W JP2008052805 W JP 2008052805W WO 2008102786 A1 WO2008102786 A1 WO 2008102786A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic field
external magnetic
magnetometric sensor
magnetoresistive element
sensor
Prior art date
Application number
PCT/JP2008/052805
Other languages
English (en)
French (fr)
Inventor
Katsuya Kikuiri
Kiyoshi Sato
Yoshito Sasaki
Original Assignee
Alps 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 Alps Electric Co., Ltd. filed Critical Alps Electric Co., Ltd.
Priority to JP2009500201A priority Critical patent/JPWO2008102786A1/ja
Publication of WO2008102786A1 publication Critical patent/WO2008102786A1/ja

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
    • G01R33/09—Magnetoresistive devices

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Hall/Mr Elements (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

【課題】　特に、磁気抵抗効果素子のＲ－Ｈ曲線を改良し、このＲ－Ｈ曲線を利用して成るラッチ型の磁気検出装置を提供することを目的としている。 【解決手段】　磁気抵抗効果素子２３は、外部磁界がゼロから（＋）方向の外部磁界の所定範囲内、及び、外部磁界がゼロから前記（＋）方向とは逆方向の（－）方向の外部磁界の所定範囲内では、電気抵抗値が変動せず、前記（＋）方向の外部磁界、及び前記（－）方向の外部磁界に対して、夫々、所定以上の磁界強度変化があったときに電気抵抗値が変化するＲ－Ｈ曲線を有している。これにより動作安定性に優れたラッチ型の磁気検出装置を得ることが出来る。また回路内にラッチ回路を設ける必要がなく、また磁気抵抗効果素子も一種類ですむ事から、磁気検出装置の小型化と製造コストの低減を図ることが可能である。
PCT/JP2008/052805 2007-02-21 2008-02-20 磁気検出装置 WO2008102786A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009500201A JPWO2008102786A1 (ja) 2007-02-21 2008-02-20 磁気検出装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-040767 2007-02-21
JP2007040767 2007-02-21

Publications (1)

Publication Number Publication Date
WO2008102786A1 true WO2008102786A1 (ja) 2008-08-28

Family

ID=39710061

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/052805 WO2008102786A1 (ja) 2007-02-21 2008-02-20 磁気検出装置

Country Status (2)

Country Link
JP (1) JPWO2008102786A1 (ja)
WO (1) WO2008102786A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108551339A (zh) * 2017-12-15 2018-09-18 江苏多维科技有限公司 一种基于磁电阻的双稳态磁开关及系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1183967A (ja) * 1997-09-05 1999-03-26 Oki Electric Ind Co Ltd 磁界検出方法、磁界検出システムおよび磁界検出素子
JP2003124539A (ja) * 2001-10-09 2003-04-25 Canon Inc 磁気抵抗効果膜およびそれを用いたメモリ

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1031947A (ja) * 1996-05-13 1998-02-03 Jiamu Hanbai Kk 鋼球検出装置
JP3884927B2 (ja) * 2001-06-14 2007-02-21 アルプス電気株式会社 ポジションセンサ
JP3875562B2 (ja) * 2001-06-25 2007-01-31 矢崎総業株式会社 コンビネーションスイッチ
JP4114677B2 (ja) * 2005-05-16 2008-07-09 Ｔｄｋ株式会社 角度スイッチセンサ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1183967A (ja) * 1997-09-05 1999-03-26 Oki Electric Ind Co Ltd 磁界検出方法、磁界検出システムおよび磁界検出素子
JP2003124539A (ja) * 2001-10-09 2003-04-25 Canon Inc 磁気抵抗効果膜およびそれを用いたメモリ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108551339A (zh) * 2017-12-15 2018-09-18 江苏多维科技有限公司 一种基于磁电阻的双稳态磁开关及系统

Also Published As

Publication number Publication date
JPWO2008102786A1 (ja) 2010-05-27

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