WO2008139930A1 - 磁気抵抗効果素子を用いた位置検知装置 - Google Patents

磁気抵抗効果素子を用いた位置検知装置 Download PDF

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Publication number
WO2008139930A1
WO2008139930A1 PCT/JP2008/058245 JP2008058245W WO2008139930A1 WO 2008139930 A1 WO2008139930 A1 WO 2008139930A1 JP 2008058245 W JP2008058245 W JP 2008058245W WO 2008139930 A1 WO2008139930 A1 WO 2008139930A1
Authority
WO
WIPO (PCT)
Prior art keywords
detection element
magnet
detector
direction detection
magnetoresistive effect
Prior art date
Application number
PCT/JP2008/058245
Other languages
English (en)
French (fr)
Inventor
Tsutomu Takeya
Takafumi Noguchi
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 EP08752246A priority Critical patent/EP2151665A1/en
Priority to JP2009514098A priority patent/JPWO2008139930A1/ja
Publication of WO2008139930A1 publication Critical patent/WO2008139930A1/ja
Priority to US12/616,382 priority patent/US7800356B2/en

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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

【課題】　磁石とこの磁石に対向して移動する検知器を用いて、位置検知を正確にできるようにした磁気抵抗効果素子を用いた位置検知装置を提供する。 【解決手段】　磁石２の円形の表面２ａがＮ極に着磁され、背面２ｂがＳ極に着磁されている。検知器１０は、磁石２の表面２ａから離れた位置でＸ－Ｙ平面内で移動する。検知器１０内にはＸ方向検知素子２０ｘとＹ方向検知素子２０ｙが設けられている。Ｘ方向検知素子２０ｘとＹ方向検知素子２０ｙは、それぞれ磁気抵抗効果素子であり、自由磁性層に与えられているバイアス磁界の方向Ｂが共に磁石２の表面２ａに対して垂直な向きである。よって、Ｘ方向検知素子２０ｘとＹ方向検知素子２０ｙでは、前記バイアス磁界が安定し、検知器１０から、Ｘ方向の位置検知出力とＹ方向の位置検知出力を正確に得ることができる。
PCT/JP2008/058245 2007-05-16 2008-04-30 磁気抵抗効果素子を用いた位置検知装置 WO2008139930A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08752246A EP2151665A1 (en) 2007-05-16 2008-04-30 Position detector employing magnetoresistive effect element
JP2009514098A JPWO2008139930A1 (ja) 2007-05-16 2008-04-30 磁気抵抗効果素子を用いた位置検知装置
US12/616,382 US7800356B2 (en) 2007-05-16 2009-11-11 Position detection apparatus using magnetoresistive effect element

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-130469 2007-05-16
JP2007130469 2007-05-16

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/616,382 Continuation US7800356B2 (en) 2007-05-16 2009-11-11 Position detection apparatus using magnetoresistive effect element

Publications (1)

Publication Number Publication Date
WO2008139930A1 true WO2008139930A1 (ja) 2008-11-20

Family

ID=40002143

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/058245 WO2008139930A1 (ja) 2007-05-16 2008-04-30 磁気抵抗効果素子を用いた位置検知装置

Country Status (4)

Country Link
US (1) US7800356B2 (ja)
EP (1) EP2151665A1 (ja)
JP (1) JPWO2008139930A1 (ja)
WO (1) WO2008139930A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008114615A1 (ja) * 2007-03-20 2008-09-25 Alps Electric Co., Ltd. 磁気抵抗効果素子を用いた位置検知装置
FR2967255B1 (fr) * 2010-11-04 2019-03-22 Continental Automotive France Dispositif de determination de la position d'un element magnetique utilisant des cellules a effet hall lineaires

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1186228A (ja) * 1997-09-11 1999-03-30 Fujitsu Ltd スピンバルブ磁気ヘッドおよびその製造方法、磁化制御方法
JP2002522792A (ja) * 1998-08-14 2002-07-23 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 巨大磁気抵抗材料又はスピントンネル接合を具え、層に対し垂直な感度を有する磁界センサ
JP2005098942A (ja) * 2003-09-26 2005-04-14 Tdk Corp 移動体検出装置
JP2005291826A (ja) * 2004-03-31 2005-10-20 Tdk Corp 慣性センサ
JP2005331400A (ja) * 2004-05-20 2005-12-02 Konica Minolta Photo Imaging Inc 位置検出装置、手振れ補正機構、および撮像装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11352143A (ja) * 1998-04-06 1999-12-24 Matsushita Electric Ind Co Ltd 加速度センサ
JP3498737B2 (ja) * 2001-01-24 2004-02-16 ヤマハ株式会社 磁気センサの製造方法
JP4315759B2 (ja) 2002-07-25 2009-08-19 旭化成エレクトロニクス株式会社 ポインティングデバイス用磁気センサ
JP2005069744A (ja) 2003-08-21 2005-03-17 Hamamatsu Koden Kk 磁気検出素子
JP2005331401A (ja) 2004-05-20 2005-12-02 Konica Minolta Photo Imaging Inc 位置検出装置、手振れ補正機構及び撮像装置
US7705586B2 (en) * 2004-09-27 2010-04-27 Nxp B.V. Magnetic sensor for input devices
JP4487710B2 (ja) * 2004-09-28 2010-06-23 ヤマハ株式会社 センサ及び同センサを用いた物理量の測定方法
US7562207B2 (en) 2005-01-27 2009-07-14 Innovasic, Inc. Deterministic microcontroller with context manager
JP2006276983A (ja) 2005-03-28 2006-10-12 Yamaha Corp ポインティングデバイス用の磁気センサ
US7573684B2 (en) * 2005-04-13 2009-08-11 Seagate Technology Llc Current-in-plane differential magnetic tri-layer sensor
JP4832358B2 (ja) * 2007-05-16 2011-12-07 アルプス電気株式会社 位置検知装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1186228A (ja) * 1997-09-11 1999-03-30 Fujitsu Ltd スピンバルブ磁気ヘッドおよびその製造方法、磁化制御方法
JP2002522792A (ja) * 1998-08-14 2002-07-23 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 巨大磁気抵抗材料又はスピントンネル接合を具え、層に対し垂直な感度を有する磁界センサ
JP2005098942A (ja) * 2003-09-26 2005-04-14 Tdk Corp 移動体検出装置
JP2005291826A (ja) * 2004-03-31 2005-10-20 Tdk Corp 慣性センサ
JP2005331400A (ja) * 2004-05-20 2005-12-02 Konica Minolta Photo Imaging Inc 位置検出装置、手振れ補正機構、および撮像装置

Also Published As

Publication number Publication date
US20100079134A1 (en) 2010-04-01
US7800356B2 (en) 2010-09-21
EP2151665A1 (en) 2010-02-10
JPWO2008139930A1 (ja) 2010-08-05

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