JP2008275567A - 相対変位測定センサーモジュール及びこれを用いた移動方向感知方法 - Google Patents
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
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- 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
- G01R33/093—Magnetoresistive devices using multilayer structures, e.g. giant magnetoresistance sensors
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- Crystallography & Structural Chemistry (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)
- Measuring Magnetic Variables (AREA)
Abstract
【解決手段】凸部と凹部が交代に形成されたグルーブパターンを有する対象物体の相対変位を測定するセンサーモジュールであって、磁場を発生させる磁石140、前記磁石と前記対象物体の間に設けられ、磁場の変化を感知して電気的信号を出力する巨大磁気抵抗(GMR)センサー130、前記巨大磁気抵抗センサーの出力信号を処理して矩形波を出力する信号処理部150、前記磁石、前記巨大磁気抵抗センサー及び前記信号処理部を支持するハウジング110を含む。これにより、対象物体の移動方向、移動距離、移動速度などを非接触式に安定的に測定できる。また、センサーモジュールはアクチュエーターの形態や種類に関係なく使用することができ、対象物体との接続点が狭い範囲に局限されても正確に感知できる。
【選択図】図1B
Description
110:ハウジング
112:開口部
120:第1のPCB
130:GMRセンサー
140:永久磁石
150:信号処理部
152:信号増幅部
154:デジタル変換部
160:第2のPCB
170:電源/信号線
Claims (9)
- 凸部と凹部が交代に形成されたグルーブパターンを有する対象物体の相対変位を測定するセンサーモジュールであって、
磁場を発生させる磁石;
前記磁石と前記対象物体との間に設けられ、磁場の変化を感知して電気的信号を出力する巨大磁気抵抗(GMR)センサー;
前記巨大磁気抵抗センサーの出力信号を処理して矩形波を出力する信号処理部;
前記磁石、前記巨大磁気抵抗センサー及び前記信号処理部を支持するハウジング;
とを含むことを特徴とする相対変位測定用センサーモジュール。 - 前記GMRセンサーは、第1の抵抗素子及び第2の抵抗素子の直列連結対と第3の抵抗素子及び第4の抵抗素子の直列連結対が互いに並列に連結される構造を有し、
前記電気的信号は、前記第1の抵抗素子及び前記第2の抵抗素子の間の第1のノードと前記第3の抵抗素子及び前記第4の抵抗素子の間の第2のノードの間で磁場の変化に応じて発生する出力電圧であることを特徴とする請求項1に記載の相対変位測定用センサーモジュール。 - 前記GMRセンサーは、それぞれ磁場の変化を感知して電気的信号を出力する第1のサブセンサー及び第2のサブセンサーを備え、
前記第1のサブセンサーの先端部と前記第2のサブセンサーの先端部は前記対象物体の移動方向に沿って離隔されており、前記対象物体が移動すれば、前記第1のサブセンサーの出力信号と前記第2のサブセンサーの出力信号が時差を置いて生成されることを特徴とする請求項1に記載の相対変位測定用センサーモジュール。 - 前記信号処理部は、
前記GMRセンサーの出力信号を増幅する信号増幅部;
前記信号増幅部で増幅された信号を矩形波に変換して外部に伝送するデジタル変換部を含むことを特徴とする請求項1に記載の相対変位測定用センサーモジュール。 - 前記ハウジングは一端に開口部を備え、前記GMRセンサーは前記開口部を密閉するPCB基板の外側に搭載されることを特徴とする請求項1に記載の相対変位測定用センサーモジュール。
- 前記GMRセンサーの外側には、保護カバーが設けられることを特徴とする請求項5に記載の相対変位測定用センサーモジュール。
- 前記磁石は、前記PCB基板の内側に固定される永久磁石であることを特徴とする請求項5に記載の相対変位測定用センサーモジュール。
- 前記ハウジングの内側には前記信号処理部と付属回路を搭載する第2のPCB基板が設けられ、前記PCB基板と前記第2のPCB基板はFPCBを通じて電気的に連結されることを特徴とする請求項5に記載の相対変位測定用センサーモジュール。
- 凸部と凹部が交代に形成されたグルーブパターンを有する対象物体の移動方向に沿って互いに離隔されて設けられ、磁場変化に対応する電気的信号をそれぞれ出力する第1のセンサーと第2のセンサーとを内蔵するGMRセンサーを用いて前記対象物体の移動方向を感知する方法において、
前記対象物体が前記第1のセンサー及び前記第2のセンサーについて移動すれば、前記第1のセンサーから生成される第1の電気的信号と前記第2のセンサーから生成される第2の電気的信号の出力順序を認識して前記対象物体の移動方向を判断することを特徴とする対象物体の移動方向感知方法。
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KR10-2007-0040775 | 2007-04-26 | ||
KR1020070040775A KR100872091B1 (ko) | 2007-04-26 | 2007-04-26 | 상대변위 측정 센서모듈 및 이를 이용한 이동방향 감지방법 |
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JP2008275567A true JP2008275567A (ja) | 2008-11-13 |
JP4705931B2 JP4705931B2 (ja) | 2011-06-22 |
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JP2007132560A Active JP4705931B2 (ja) | 2007-04-26 | 2007-05-18 | 相対変位測定センサーモジュール |
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US (1) | US7626380B2 (ja) |
JP (1) | JP4705931B2 (ja) |
KR (1) | KR100872091B1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
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DE202007011837U1 (de) * | 2007-01-08 | 2007-12-06 | Asm Automation Sensorik Messtechnik Gmbh | Winkelsensor |
KR100947288B1 (ko) * | 2007-09-17 | 2010-03-16 | 에스앤티대우(주) | 가속도센서와 상대변위센서를 포함하는 센서모듈, 이를장착한 댐퍼, 이를 포함하는 전자제어 현가시스템 및 이를이용한 차량 동작 제어 방법 |
DE102009021081B4 (de) * | 2008-07-18 | 2017-07-06 | Asm Automation Sensorik Messtechnik Gmbh | Magnetischer Winkelsensor |
CN106716163B (zh) * | 2014-07-25 | 2019-08-16 | 三菱电机株式会社 | 磁性传感器装置及其制造方法 |
DE102016206389A1 (de) * | 2016-04-15 | 2017-10-19 | Continental Teves Ag & Co. Ohg | Raddrehzahlsensor und Befestigungssystem zur Montage eines Raddrehzahlsensors |
US20180003525A1 (en) * | 2016-07-01 | 2018-01-04 | Novatek Ip, Llc | Linear Measurement Device |
CN107388957A (zh) * | 2017-08-28 | 2017-11-24 | 天津中德应用技术大学 | 应用gmr巨磁阻材料专用角度传感器的车载自动控制测平仪 |
CN110375689A (zh) * | 2019-08-05 | 2019-10-25 | 北京海格立斯智能装备技术有限公司 | 一种矿场自动化设备用可压缩式位置传感器保护器 |
KR102154360B1 (ko) * | 2019-10-24 | 2020-09-09 | 아시아나아이디티 주식회사 | 무선 자기센서 모듈 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03135723A (ja) * | 1989-10-20 | 1991-06-10 | Sankyo Seiki Mfg Co Ltd | 磁気検出装置 |
JPH08204252A (ja) * | 1995-01-31 | 1996-08-09 | Canon Electron Inc | 磁気抵抗効果センサ |
JPH10122808A (ja) * | 1996-10-22 | 1998-05-15 | Hitachi Metals Ltd | 磁気センサ |
JP2001235481A (ja) * | 2000-02-24 | 2001-08-31 | Matsushita Electric Ind Co Ltd | 回転数センサ |
JP2001289865A (ja) * | 2000-04-05 | 2001-10-19 | Matsushita Electric Ind Co Ltd | 回転数センサ |
JP2002090181A (ja) * | 2000-09-14 | 2002-03-27 | Mitsubishi Electric Corp | 磁気検出装置 |
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JPH09329463A (ja) * | 1996-06-10 | 1997-12-22 | Mitsubishi Electric Corp | 検出装置 |
JP3186656B2 (ja) | 1997-08-06 | 2001-07-11 | トヨタ自動車株式会社 | 回転数センサ |
JP3448209B2 (ja) * | 1998-05-08 | 2003-09-22 | 三菱電機株式会社 | 磁気検出装置 |
JP3895556B2 (ja) | 2001-04-03 | 2007-03-22 | アルプス電気株式会社 | 回転角検出センサ |
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- 2007-04-26 KR KR1020070040775A patent/KR100872091B1/ko active IP Right Grant
- 2007-05-18 JP JP2007132560A patent/JP4705931B2/ja active Active
- 2007-07-20 US US11/780,835 patent/US7626380B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03135723A (ja) * | 1989-10-20 | 1991-06-10 | Sankyo Seiki Mfg Co Ltd | 磁気検出装置 |
JPH08204252A (ja) * | 1995-01-31 | 1996-08-09 | Canon Electron Inc | 磁気抵抗効果センサ |
JPH10122808A (ja) * | 1996-10-22 | 1998-05-15 | Hitachi Metals Ltd | 磁気センサ |
JP2001235481A (ja) * | 2000-02-24 | 2001-08-31 | Matsushita Electric Ind Co Ltd | 回転数センサ |
JP2001289865A (ja) * | 2000-04-05 | 2001-10-19 | Matsushita Electric Ind Co Ltd | 回転数センサ |
JP2002090181A (ja) * | 2000-09-14 | 2002-03-27 | Mitsubishi Electric Corp | 磁気検出装置 |
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US7626380B2 (en) | 2009-12-01 |
KR20080096003A (ko) | 2008-10-30 |
US20080265876A1 (en) | 2008-10-30 |
JP4705931B2 (ja) | 2011-06-22 |
KR100872091B1 (ko) | 2008-12-05 |
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