WO2009044840A1 - 磁気検出装置 - Google Patents
磁気検出装置 Download PDFInfo
- Publication number
- WO2009044840A1 WO2009044840A1 PCT/JP2008/068016 JP2008068016W WO2009044840A1 WO 2009044840 A1 WO2009044840 A1 WO 2009044840A1 JP 2008068016 W JP2008068016 W JP 2008068016W WO 2009044840 A1 WO2009044840 A1 WO 2009044840A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetoresistance effect
- effect elements
- magnetic sensor
- output waveform
- top surface
- Prior art date
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
- G01D5/142—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
-
- 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
- G01D2205/00—Indexing scheme relating to details of means for transferring or converting the output of a sensing member
- G01D2205/80—Manufacturing details of magnetic targets for magnetic encoders
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Hall/Mr Elements (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
【課題】 特に、出力波形の安定化を図ることができるともに、略三角波の出力波形を得ることが可能な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24a~24hを搭載した磁気センサ22は、磁石21の上面(着磁面)21aの上方に位置するとともに、前記上面(着磁面)21aの幅方向の中心CLから側縁部21a1方向にずらして配置されている。これにより、相対移動する各磁気抵抗効果素子に対して無磁場状態が形成されずに、回転磁場が作用するため、安定した出力を得ることが可能になる。また、出力値をさほど低下させることなく略三角波の出力波形を得ることが可能である。さらに前記磁気抵抗効果素子を構成する固定磁性層の磁化方向を全て同一方向に固定している。よって、各磁気抵抗効果素子を同じ製造工程で製造できる等、磁気センサの製造を容易化することが可能である。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007-261693 | 2007-10-05 | ||
JP2007261693A JP2010286238A (ja) | 2007-10-05 | 2007-10-05 | 磁気検出装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009044840A1 true WO2009044840A1 (ja) | 2009-04-09 |
Family
ID=40526263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/068016 WO2009044840A1 (ja) | 2007-10-05 | 2008-10-03 | 磁気検出装置 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP2010286238A (ja) |
WO (1) | WO2009044840A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013161027A1 (ja) * | 2012-04-26 | 2013-10-31 | 三菱電機株式会社 | 磁気式位置検出装置 |
EP2865997A1 (en) * | 2013-10-28 | 2015-04-29 | Hitachi Metals, Ltd. | Magnetic medium for magnetic encoder, magnetic encoder and method for manufacturing magnetic medium |
JP2015190882A (ja) * | 2014-03-28 | 2015-11-02 | Dmg森精機株式会社 | 位置検出装置 |
WO2018193961A1 (ja) * | 2017-04-18 | 2018-10-25 | アルプス電気株式会社 | 回転角度検出装置 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5718631B2 (ja) | 2010-12-22 | 2015-05-13 | 矢崎総業株式会社 | 電子部品の接続構造 |
US10866117B2 (en) * | 2018-03-01 | 2020-12-15 | Allegro Microsystems, Llc | Magnetic field influence during rotation movement of magnetic target |
JP2019219311A (ja) * | 2018-06-21 | 2019-12-26 | 株式会社デンソー | リニアポジションセンサ |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007192778A (ja) * | 2006-01-23 | 2007-08-02 | Tokai Rika Co Ltd | 回転角度検出装置 |
JP2007199007A (ja) * | 2006-01-30 | 2007-08-09 | Alps Electric Co Ltd | 磁気エンコーダ |
JP2007220367A (ja) * | 2006-02-14 | 2007-08-30 | Alps Electric Co Ltd | 磁気スイッチ |
-
2007
- 2007-10-05 JP JP2007261693A patent/JP2010286238A/ja not_active Withdrawn
-
2008
- 2008-10-03 WO PCT/JP2008/068016 patent/WO2009044840A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007192778A (ja) * | 2006-01-23 | 2007-08-02 | Tokai Rika Co Ltd | 回転角度検出装置 |
JP2007199007A (ja) * | 2006-01-30 | 2007-08-09 | Alps Electric Co Ltd | 磁気エンコーダ |
JP2007220367A (ja) * | 2006-02-14 | 2007-08-30 | Alps Electric Co Ltd | 磁気スイッチ |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013161027A1 (ja) * | 2012-04-26 | 2013-10-31 | 三菱電機株式会社 | 磁気式位置検出装置 |
CN104246445A (zh) * | 2012-04-26 | 2014-12-24 | 三菱电机株式会社 | 磁式位置检测装置 |
CN104246445B (zh) * | 2012-04-26 | 2016-04-13 | 三菱电机株式会社 | 磁式位置检测装置 |
EP2865997A1 (en) * | 2013-10-28 | 2015-04-29 | Hitachi Metals, Ltd. | Magnetic medium for magnetic encoder, magnetic encoder and method for manufacturing magnetic medium |
US9574906B2 (en) | 2013-10-28 | 2017-02-21 | Hitachi Metals, Ltd. | Magnetic medium for magnetic encoder, magnetic encoder and method for manufacturing magnetic medium |
JP2015190882A (ja) * | 2014-03-28 | 2015-11-02 | Dmg森精機株式会社 | 位置検出装置 |
WO2018193961A1 (ja) * | 2017-04-18 | 2018-10-25 | アルプス電気株式会社 | 回転角度検出装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2010286238A (ja) | 2010-12-24 |
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