WO2009051069A1 - Capteur gmr - Google Patents

Capteur gmr Download PDF

Info

Publication number
WO2009051069A1
WO2009051069A1 PCT/JP2008/068435 JP2008068435W WO2009051069A1 WO 2009051069 A1 WO2009051069 A1 WO 2009051069A1 JP 2008068435 W JP2008068435 W JP 2008068435W WO 2009051069 A1 WO2009051069 A1 WO 2009051069A1
Authority
WO
WIPO (PCT)
Prior art keywords
gmr
divided
element portions
disposed
absolute value
Prior art date
Application number
PCT/JP2008/068435
Other languages
English (en)
Japanese (ja)
Inventor
Makito Takigawa
Ken Kawabata
Tomoki Ogawa
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 JP2009538075A priority Critical patent/JP4861483B2/ja
Publication of WO2009051069A1 publication Critical patent/WO2009051069A1/fr

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
    • G01D5/244—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 characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/245—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 characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
    • G01D5/2451—Incremental encoders
    • 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)
  • Measuring Magnetic Variables (AREA)

Abstract

L'invention concerne un capteur GMR ayant une précision de détection avec une résolution élevée obtenue de manière appropriée en évitant l'effet de bruit provenant de l'extérieur et un problème provoqué par un signal électrique médiocre. Le capteur GMR comprend un circuit à pont (20) contenant quatre éléments GMR, un amplificateur différentiel (30) servant à détecter une quantité différentielle entre les signaux de sortie des premier et second terminaux de sortie, qui se produit avec le mouvement d'un aimant disposé en opposition par rapport au circuit à pont (20), et un convertisseur en valeur absolue (40) servant à convertir la quantité différentielle détectée en valeur absolue. Les parties d'élément dans lesquelles le premier élément GMR est divisé et les parties d'élément dans lesquelles le troisième élément GMR est divisé sont disposées en alternance sur une ligne pour constituer une première unité GMR. Les parties d'élément dans lesquelles le second élément GMR est divisé et les parties d'élément dans lesquelles le quatrième élément GMR est divisé sont disposées en alternance sur une ligne pour constituer une seconde unité GMR. Les première et seconde unités GMR sont disposées dans une direction orthogonale à la direction du mouvement de l'aimant.
PCT/JP2008/068435 2007-10-15 2008-10-10 Capteur gmr WO2009051069A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009538075A JP4861483B2 (ja) 2007-10-15 2008-10-10 Ｇｍｒセンサ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-267759 2007-10-15
JP2007267759 2007-10-15

Publications (1)

Publication Number Publication Date
WO2009051069A1 true WO2009051069A1 (fr) 2009-04-23

Family

ID=40567336

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/068435 WO2009051069A1 (fr) 2007-10-15 2008-10-10 Capteur gmr

Country Status (2)

Country Link
JP (1) JP4861483B2 (fr)
WO (1) WO2009051069A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010281767A (ja) * 2009-06-08 2010-12-16 Alps Electric Co Ltd センサ素子および磁気式センサ
WO2010150725A1 (fr) * 2009-06-24 2010-12-29 アルプス電気株式会社 Dispositif de détection magnétique
DE102013104783A1 (de) 2012-05-10 2013-11-14 Alps Electric Co., Ltd. Magnet-Detektionsvorrichtung und Magnet-Encoder
EP2722649A2 (fr) 2012-10-17 2014-04-23 Alps Electric Co., Ltd. Codeur magnétique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103267955B (zh) 2013-05-28 2016-07-27 江苏多维科技有限公司 单芯片桥式磁场传感器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59146720U (ja) * 1983-03-23 1984-10-01 フアナツク株式会社 磁気パルスエンコ−ダ
JPS6288914U (fr) * 1985-11-22 1987-06-06
JPH10221004A (ja) * 1997-01-31 1998-08-21 Mitsutoyo Corp 変位測定器
JP2007121253A (ja) * 2005-09-30 2007-05-17 Hitachi Metals Ltd 磁気エンコーダー

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59146720A (ja) * 1983-02-05 1984-08-22 Nissan Motor Co Ltd 工業用ロボツトにおける締結具締付装置の支持装置
JPS6288914A (ja) * 1985-10-16 1987-04-23 Nec Corp 高度計測装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59146720U (ja) * 1983-03-23 1984-10-01 フアナツク株式会社 磁気パルスエンコ−ダ
JPS6288914U (fr) * 1985-11-22 1987-06-06
JPH10221004A (ja) * 1997-01-31 1998-08-21 Mitsutoyo Corp 変位測定器
JP2007121253A (ja) * 2005-09-30 2007-05-17 Hitachi Metals Ltd 磁気エンコーダー

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010281767A (ja) * 2009-06-08 2010-12-16 Alps Electric Co Ltd センサ素子および磁気式センサ
WO2010150725A1 (fr) * 2009-06-24 2010-12-29 アルプス電気株式会社 Dispositif de détection magnétique
JP5066628B2 (ja) * 2009-06-24 2012-11-07 アルプス電気株式会社 磁気検出装置
DE102013104783A1 (de) 2012-05-10 2013-11-14 Alps Electric Co., Ltd. Magnet-Detektionsvorrichtung und Magnet-Encoder
DE102013104783B4 (de) * 2012-05-10 2014-07-31 Alps Electric Co., Ltd. Magnet-Detektionsvorrichtung und Magnet-Encoder
EP2722649A2 (fr) 2012-10-17 2014-04-23 Alps Electric Co., Ltd. Codeur magnétique
JP2014081298A (ja) * 2012-10-17 2014-05-08 Alps Electric Co Ltd 磁気エンコーダ

Also Published As

Publication number Publication date
JPWO2009051069A1 (ja) 2011-03-03
JP4861483B2 (ja) 2012-01-25

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