JPWO2017073151A1 - 位置検知装置 - Google Patents
位置検知装置 Download PDFInfo
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- JPWO2017073151A1 JPWO2017073151A1 JP2017547653A JP2017547653A JPWO2017073151A1 JP WO2017073151 A1 JPWO2017073151 A1 JP WO2017073151A1 JP 2017547653 A JP2017547653 A JP 2017547653A JP 2017547653 A JP2017547653 A JP 2017547653A JP WO2017073151 A1 JPWO2017073151 A1 JP WO2017073151A1
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- magnet
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0011—Arrangements for eliminating or compensation of measuring errors due to temperature or weight
- G01B5/0014—Arrangements for eliminating or compensation of measuring errors due to temperature or weight due to temperature
-
- 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
- G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
- G01D3/028—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure
- G01D3/036—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure on measuring arrangements themselves
-
- 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
-
- 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
- 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
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
【解決手段】移動部10に第1の磁石11と第2の磁石12が設けられている。検知部20には感度軸Sxを有する第1の磁気センサと感度軸Szを有する第2の磁気センサが搭載されている。移動部10と検知部20は移動軌跡Txに沿って相対的に移動する。磁石11,12の対向面11a,12aはその両端部が中央部よりも移動軌跡Txから後退する突曲面形状である。この形状とすることにより、高温環境で磁石が減磁したときの測定値の直線性の誤差を抑制できようになる。
【選択図】図1
Description
この位置検知装置は、ケース内に進退移動するホルダが設けられており、このホルダに2個の磁石が移動方向に並んで配置されている。ケースには検出部が固定されており、この検出部に、移動する前記磁石に対向する2個の磁気抵抗素子が設けられている。
前記磁石は、前記検知部の相対的な移動軌跡と直交する向きに着磁されて、前記検知部には、前記磁石から出る磁束のうちの前記移動軌跡と平行な成分を検知する磁気センサと前記移動軌跡と直交する成分を検知する磁気センサとが設けられており、
前記磁石は前記移動軌跡に対向する対向面を有し、前記対向面は、前記移動軌跡に沿う方向の両端部が、中央部よりも前記移動軌跡から遠ざかる位置に形成されていることを特徴とするものである。
この位置検知装置1Aに使用されている第1の磁石11と第2の磁石12は図1(A)に示した位置検知装置1に設けられているものと同じである。図2に示す位置検知装置1Aは、磁石11,12を有する移動部10が回転し、移動部10と検知部20との相対的な移動軌跡Txが円弧に沿っている。なお、この位置検知装置1Aにおいても、磁石11,12が固定され、検知部20が円弧の移動軌跡Txに沿って移動してもよい。
10 移動部
11 第1の磁石
11a 対向面
12 第2の磁石
12a 対向面
13 磁石
13a 対向面
20 検知部
111,112,113 磁石
111a,112a,113a 対向面
Claims (6)
- 検知部と、前記検知部に対向する磁石とを有し、前記検知部と前記磁石とが相対的に移動する位置検知装置において、
前記磁石は、前記検知部の相対的な移動軌跡と直交する向きに着磁されて、前記検知部には、前記磁石から出る磁束のうちの前記移動軌跡と平行な成分を検知する磁気センサと前記移動軌跡と直交する成分を検知する磁気センサとが設けられており、
前記磁石は前記移動軌跡に対向する対向面を有し、前記対向面は、前記移動軌跡に沿う方向の両端部が、中央部よりも前記移動軌跡から遠ざかる位置に形成されていることを特徴とする位置検知装置。 - 前記対向面は、前記移動軌跡に沿う方向に曲率を有する突曲面である請求項1記載の位置検知装置。
- 前記曲率の半径は、前記対向面と前記移動軌跡との最短距離の1.7倍以上で3.4倍以下である請求項1または2記載の位置検知装置。
- 前記磁石は、前記移動軌跡に沿って複数個設けられており、隣り合う前記磁石の前記対向面が逆極性に着磁されている請求項1ないし3のいずれかに記載の位置検知装置。
- 前記移動軌跡は直線である請求項1ないし4のいずれかに記載の位置検知装置。
- 前記移動軌跡は円弧である請求項1ないし4のいずれかに記載の位置検知装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015211556 | 2015-10-28 | ||
JP2015211556 | 2015-10-28 | ||
PCT/JP2016/074941 WO2017073151A1 (ja) | 2015-10-28 | 2016-08-26 | 位置検知装置 |
Publications (2)
Publication Number | Publication Date |
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JPWO2017073151A1 true JPWO2017073151A1 (ja) | 2018-07-26 |
JP6492193B2 JP6492193B2 (ja) | 2019-03-27 |
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Application Number | Title | Priority Date | Filing Date |
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JP2017547653A Active JP6492193B2 (ja) | 2015-10-28 | 2016-08-26 | 位置検知装置 |
Country Status (6)
Country | Link |
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US (1) | US20180216925A1 (ja) |
EP (1) | EP3370038B1 (ja) |
JP (1) | JP6492193B2 (ja) |
KR (1) | KR102042369B1 (ja) |
CN (1) | CN108351222B (ja) |
WO (1) | WO2017073151A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109120823B (zh) | 2013-08-01 | 2020-07-14 | 核心光电有限公司 | 具有自动聚焦的纤薄多孔径成像系统及其使用方法 |
WO2019049414A1 (ja) * | 2017-09-07 | 2019-03-14 | 株式会社村田製作所 | 磁気センサおよびそれを備える電流センサ |
KR102261024B1 (ko) | 2017-11-23 | 2021-06-04 | 코어포토닉스 리미티드 | 컴팩트 폴디드 카메라 구조 |
JP6954139B2 (ja) * | 2018-01-16 | 2021-10-27 | 株式会社デンソー | 回転角度検出装置 |
CN111936908B (zh) | 2018-04-23 | 2021-12-21 | 核心光电有限公司 | 具有扩展的两个自由度旋转范围的光路折叠元件 |
WO2021181534A1 (ja) * | 2020-03-10 | 2021-09-16 | 三菱電機株式会社 | 磁気式リニア位置検出器 |
EP4065934A4 (en) * | 2020-07-31 | 2023-07-26 | Corephotonics Ltd. | LARGE STROKE LINEAR POSITION DETECTION HALL EFFECT SENSOR MAGNET GEOMETRY |
US20220402547A1 (en) | 2021-06-21 | 2022-12-22 | Tdk Corporation | Magnetic sensor, brake system using the same, and steering system using the same |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001050703A (ja) * | 1999-08-09 | 2001-02-23 | Alps Electric Co Ltd | 磁気式変位検出装置 |
US7088095B1 (en) * | 2004-02-04 | 2006-08-08 | Honeywell International Inc. | Balanced magnetic linear displacement sensor |
JP2007132710A (ja) * | 2005-11-08 | 2007-05-31 | Tokai Rika Co Ltd | 位置検出装置 |
JP2010197373A (ja) * | 2009-01-29 | 2010-09-09 | Denso Corp | ストロークセンサおよび回転角センサ |
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US708895A (en) * | 1901-11-27 | 1902-09-09 | William J Martin | Furniture-caster. |
JP3191531B2 (ja) | 1993-10-20 | 2001-07-23 | ミノルタ株式会社 | 画像形成装置 |
JP3419533B2 (ja) * | 1994-03-07 | 2003-06-23 | 帝人製機株式会社 | 磁気スケールおよびこれを備えた磁気式検出装置 |
US6577123B2 (en) * | 2001-06-04 | 2003-06-10 | Delphi Technologies, Inc. | Linear position sensor assembly |
US6653830B2 (en) * | 2001-12-14 | 2003-11-25 | Wabash Technologies, Inc. | Magnetic position sensor having shaped pole pieces to provide a magnetic field having a varying magnetic flux density field strength |
DE10202320A1 (de) * | 2002-01-23 | 2003-07-31 | Bosch Gmbh Robert | Wegsensor mit magnetoelektrischem Wandlerelement |
DE10334869B3 (de) * | 2003-07-29 | 2004-09-16 | Tech3 E.K. | Drehwinkelsensor |
WO2009121193A1 (de) * | 2008-04-02 | 2009-10-08 | Polycontact Ag | Magnetische linearsensoranordnung |
JP5408508B2 (ja) * | 2011-11-01 | 2014-02-05 | 株式会社デンソー | 位置検出装置 |
CN203178236U (zh) * | 2013-02-07 | 2013-09-04 | 中国石油天然气股份有限公司 | 一种新型漏磁检测传感器 |
-
2016
- 2016-08-26 EP EP16859388.7A patent/EP3370038B1/en active Active
- 2016-08-26 KR KR1020187011042A patent/KR102042369B1/ko active IP Right Grant
- 2016-08-26 CN CN201680061505.6A patent/CN108351222B/zh active Active
- 2016-08-26 JP JP2017547653A patent/JP6492193B2/ja active Active
- 2016-08-26 WO PCT/JP2016/074941 patent/WO2017073151A1/ja unknown
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2018
- 2018-03-29 US US15/939,418 patent/US20180216925A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001050703A (ja) * | 1999-08-09 | 2001-02-23 | Alps Electric Co Ltd | 磁気式変位検出装置 |
US7088095B1 (en) * | 2004-02-04 | 2006-08-08 | Honeywell International Inc. | Balanced magnetic linear displacement sensor |
JP2007132710A (ja) * | 2005-11-08 | 2007-05-31 | Tokai Rika Co Ltd | 位置検出装置 |
JP2010197373A (ja) * | 2009-01-29 | 2010-09-09 | Denso Corp | ストロークセンサおよび回転角センサ |
Also Published As
Publication number | Publication date |
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CN108351222A (zh) | 2018-07-31 |
EP3370038A1 (en) | 2018-09-05 |
EP3370038A4 (en) | 2019-06-12 |
KR102042369B1 (ko) | 2019-11-07 |
CN108351222B (zh) | 2020-10-30 |
KR20180056712A (ko) | 2018-05-29 |
JP6492193B2 (ja) | 2019-03-27 |
US20180216925A1 (en) | 2018-08-02 |
EP3370038B1 (en) | 2020-06-17 |
WO2017073151A1 (ja) | 2017-05-04 |
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