WO2008152818A1 - 非接触型位置センサ - Google Patents

非接触型位置センサ Download PDF

Info

Publication number
WO2008152818A1
WO2008152818A1 PCT/JP2008/001523 JP2008001523W WO2008152818A1 WO 2008152818 A1 WO2008152818 A1 WO 2008152818A1 JP 2008001523 W JP2008001523 W JP 2008001523W WO 2008152818 A1 WO2008152818 A1 WO 2008152818A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetoresistive elements
position sensor
protruding section
magnet
noncontact position
Prior art date
Application number
PCT/JP2008/001523
Other languages
English (en)
French (fr)
Inventor
Mikihiro Ohshima
Motoki Ogata
Yoshinori Takashima
Original Assignee
Panasonic Corporation
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 Panasonic Corporation filed Critical Panasonic Corporation
Priority to US12/601,385 priority Critical patent/US8384375B2/en
Publication of WO2008152818A1 publication Critical patent/WO2008152818A1/ja

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
    • G01D2205/70—Position sensors comprising a moving target with particular shapes, e.g. of soft magnetic targets
    • G01D2205/77—Specific profiles
    • G01D2205/775—Tapered profiles

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

　非接触型位置センサは、磁石と、磁石の磁極面に所定の間隔をおいて一列に所定の方向に配設された第１から第３の磁気抵抗素子と、所定の方向に変位できる磁性体よりなる被検出体とを備える。第１から第３の磁気抵抗素子は電源とグランドの間で直列に接続されている。第１と第２の磁気抵抗素子とは第１の接続点で接続されている。第２と第３の磁気抵抗素子とは第２の接続点で接続されている。被検出部は、凸部と、凸部に接続された軸部とを有する。凸部は第１から第３の磁気抵抗素子に対向できる。軸部は、凸部と磁石の磁極面との間の距離より大きな距離だけ磁極面から離れている。この非接触型位置センサは複雑な形状の部品を有する必要がなく、容易に組立てることができる。
PCT/JP2008/001523 2007-06-14 2008-06-13 非接触型位置センサ WO2008152818A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/601,385 US8384375B2 (en) 2007-06-14 2008-06-13 Noncontact position sensor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007157217A JP2008309611A (ja) 2007-06-14 2007-06-14 非接触型位置センサ
JP2007-157217 2007-06-14

Publications (1)

Publication Number Publication Date
WO2008152818A1 true WO2008152818A1 (ja) 2008-12-18

Family

ID=40129432

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/001523 WO2008152818A1 (ja) 2007-06-14 2008-06-13 非接触型位置センサ

Country Status (3)

Country Link
US (1) US8384375B2 (ja)
JP (1) JP2008309611A (ja)
WO (1) WO2008152818A1 (ja)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59133420A (ja) * 1983-01-21 1984-07-31 Aichi Tokei Denki Co Ltd 磁場検出用素子
JPH01124509U (ja) * 1988-02-16 1989-08-24
WO2007032110A1 (ja) * 2005-09-16 2007-03-22 Matsushita Electric Industrial Co., Ltd. Ａ／ｄ変換器及びａ／ｄ変換方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01124509A (ja) * 1987-11-05 1989-05-17 Kawashima Seisakusho:Kk 縦型製袋充填包装方法
JPH05264326A (ja) 1992-03-17 1993-10-12 Fujitsu Ltd リニア型位置センサ
US6717399B2 (en) * 1999-07-15 2004-04-06 Wabash Technologies, Inc. Magnetic sensing device with offset compensation
US6469497B2 (en) * 2001-01-09 2002-10-22 Delphi Technologies, Inc. Magnetic position sensor system composed of two reference magnetoresistors and a linear displacement sensing magnetoresistor
US7102366B2 (en) * 2001-02-09 2006-09-05 Georgia-Pacific Corporation Proximity detection circuit and method of detecting capacitance changes
US7045997B2 (en) * 2002-07-23 2006-05-16 Mitsubishi Denki Kabushiki Kaisha Magnetic detection apparatus
JP4219225B2 (ja) 2003-05-30 2009-02-04 パイオニア株式会社 スピーカ装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59133420A (ja) * 1983-01-21 1984-07-31 Aichi Tokei Denki Co Ltd 磁場検出用素子
JPH01124509U (ja) * 1988-02-16 1989-08-24
WO2007032110A1 (ja) * 2005-09-16 2007-03-22 Matsushita Electric Industrial Co., Ltd. Ａ／ｄ変換器及びａ／ｄ変換方法

Also Published As

Publication number Publication date
US8384375B2 (en) 2013-02-26
US20100164485A1 (en) 2010-07-01
JP2008309611A (ja) 2008-12-25

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