JP4757260B2 - 連続校正式磁界センサー - Google Patents
連続校正式磁界センサー Download PDFInfo
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- JP4757260B2 JP4757260B2 JP2007531864A JP2007531864A JP4757260B2 JP 4757260 B2 JP4757260 B2 JP 4757260B2 JP 2007531864 A JP2007531864 A JP 2007531864A JP 2007531864 A JP2007531864 A JP 2007531864A JP 4757260 B2 JP4757260 B2 JP 4757260B2
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- 238000001514 detection method Methods 0.000 claims description 53
- 238000005259 measurement Methods 0.000 claims description 27
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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
- G01R33/07—Hall effect devices
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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
- G01R33/0023—Electronic aspects, e.g. circuits for stimulation, evaluation, control; Treating the measured signals; calibration
- G01R33/0035—Calibration of single magnetic sensors, e.g. integrated calibration
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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
- G01R33/07—Hall effect devices
- G01R33/072—Constructional adaptation of the sensor to specific applications
- G01R33/075—Hall devices configured for spinning current measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/20—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Measuring Magnetic Variables (AREA)
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Description
・外部磁界Bextの測定値。
・ゲイン校正に利用する基準磁界Brefの測定値。
・センサーとプリアンプのオフセット値。
Vout1=A・(+Vin)+Voffset (1)
Vout2=A・(−Vin)+Voffset (2)
これら2つの位相を合わせると、
Vout=Vout1−Vout2=2A・Vin (+0・Voffset) (3)
それゆえ、オフセット電圧値を排除して、真の入力値を抽出できる。
Vout1+Vout2=2Voffset (4)
Vout=A・(±)(Vext±Vref)+Voffset (5)
↑ ↑
S2 S1
それゆえ、符号S1とS2は、図2aに示すように異なる周波数で変化する。
Vout1=A・(+)(Vext+Vref)+Voffset=AVext+AVref+Voffset (6)
Vout2=A・(−)(Vext+Vref)+Voffset=AVext−AVref+Voffset (7)
Vout3=A・(+)(Vext−Vref)+Voffset=AVext−AVref+Voffset (8)
Vout4=A・(−)(Vext−Vref)+Voffset=−AVext+AVref+Voffset (9)
A・Vext (増幅信号)
A・Vref (増幅基準信号)
Voffset (オフセット電圧)
Vout1−Vout2+Vout3−Vout4=4AVext (10)
Vout1−Vout2−Vout3+Vout4=4AVref (11)
Vout1+Vout2+Vout3+Vout4=4AVoffset (12)
ただし、この場合の変調順序は、+、+、+、+となる。
Vout,A=Vout1−Vout2 (13)
Vout,B=Vout3−Vout4 (14)
Vout,A+Vout,B=4AVext (15)
Vout,A−Vout,B=4AVref (16)
B=Bext+Bref (17)
VH=SICB+VHoffset (18)
ただし、Sは磁界センサーの感度、Icは磁界センサークロック周波数の周期でスイッチ箱により90°回転したセンサーバイアス電流値、Brefは、例えば、センサークロック周波数の1/2である基準コイルクロック周波数の周期で極性が変動する基準磁界、VHoffsetは磁界センサーにより増幅器22の入力端で発生したオフセット電圧値である。
VA=Aampli・VH +VAoffset
=Aampli(SIC(Bext+Bref)+VHoffset)+VAoffset (19)
=AampliSICBext+AampliSICBref+AampliVHoffset+VAoffset
= ±ABext ±AB'ref + Voffset
=A・(±)(Bext±B'ref)+Voffset (20)
ただし、VAoffsetは増幅器のオフセット値、A=AampliS|Ic|、B’ref=|Bref|である。
なお、ゲイン値AはAampliS|Ic|と同じ、Bref=|Bref|と同じ、極性±は、それぞれ第1と第2の変調器16、14の極性S1とS2に対応する。等式(20)は等式(5)と同等であるので、システムのゲイン総値を安定化でき、温度、機械的応力、その他の要素によるドリフトから保護することが可能となる。
ただし、(kplus−kminus)はデジタル形式のシグマ/デルタ出力値、(kplus+kminus)は、変換中でのステップ動作数(一般的には、1ステップは1秒の百万分の1、マイクロ秒)、εはε<Vref、Vdemodはシグマ/デルタ入力端に入力される復調器/フィルターの出力信号、Vrefはシグマ/デルタ変換器のゲイン値を制御するための一定の基準電圧値、kplusは、一般的に1秒間の積分周期中に加算されるVrefの回数、kminusは、積分周期中に減算されるVrefの回数、εは量子化誤差総数である。
Claims (21)
- 基準磁界発生器と、
磁界検知素子を備える磁界検知セルと、
前記磁界検知セルの出力端に接続された信号処理回路とを備え、
前記基準磁界発生器は、
さらに、前記磁界検知セルに供給するための周波数変調された基準磁界を作成できるよう構成された基準磁界変調器を備え、
前記磁界検知セルは、さらに、前記基準磁界発生器の変調周波数と異なる周波数でそれ自体の出力信号を変調できるよう構成された磁界検知セル変調器を備え、
前記信号処理回路は、磁界センサーの遷移特性における誤差変動を前記磁界検知セルに対するゲイン補正し及び/又は前記信号処理回路自身のオフセット補正するためのフィードバック線を備えると共に、前記両変調器により変調された4つの位相の出力の加算又は減算により前記ゲイン補正及び/又は前記オフセット補正の情報を求める磁界センサー。 - 前記両変調器が、入力端の接続を切り替えられるよう構成されており、前記両変調器の片方の切替動作の周波数が、前記他方の変調器の切替周波数の整数倍数である請求項1記載の磁界センサー。
- 前記整数倍数が2である請求項2記載の磁界センサー。
- 前記磁界検知セルが、複数の磁界検知素子からなる請求項1〜3のいずれかに記載の磁界センサー。
- 前記複数の磁界検知素子が、集積回路内において方形に配列された4つのホール効果センサーである請求項4記載の磁界センサー。
- 前記基準磁界発生器が、集積回路内において直列に接続された4つのコイルである請求項4または5記載の磁界センサー。
- 前記磁界検知セルの電流入力が、変調において前記磁界検知セル変調器により90°回転する請求項5記載の磁界センサー。
- 前記磁界検知セル変調器が差分差動増幅器(DDA)の入力端に接続されている請求項1〜7のいずれかに記載の磁界センサー。
- 前記信号処理回路が、さらに、復調処理において前記加算又は減算を行う復調回路部を備える請求項1〜8のいずれかに記載の磁界センサー。
- 前記復調回路部が、前記磁界検知セルに接続された増幅回路の出力端に接続された入力端を備え、前記フィードバック線、および、前記センサーの出力線に接続された出力端を備える請求項9記載の磁界センサー。
- 前記復調回路部が、前記それぞれのフィードバック線と出力線のための別途の復調器からなる請求項9または10記載の磁界センサー。
- 前記フィードバック線が、前記磁界検知セルのゲイン補正入力端に入力接続するゲイン補正用フィードバック線を含む請求項9〜11のいずれかに記載の磁界センサー。
- さらに、前記ゲイン補正用フィードバック線において、前記復調回路部の復調器の後に接続された、または、その復調器と一体化構成されたローパスフィルターとからなる請求項12記載の磁界センサー。
- 前記ゲイン補正用フィードバック線が、前記復調されたゲイン補正フィードバック信号をデジタル化するためのシグマ/デルタ式のアナログ/デジタル変換器を備える請求項12または13記載の磁界センサー。
- 前記フィードバック線が、前記磁界検知セル変調器に接続された増幅回路のオフセット調整入力端に入力接続するオフセット補正用フィードバック線を含む請求項1〜14のいずれかに記載の磁界センサー。
- 前記オフセット補正用フィードバック線が、前記両変調器により変調された信号を復調する復調回路部の出力端に接続されている請求項15記載の磁界センサー。
- 測定する電流により発生する外部磁界の計測から導電体内に流れる電流を測定する電流センサーであって、請求項1〜16のいずれかに記載の磁界センサーからなる電流センサー。
- さらに、高透磁性をもつ素材で形成され、前記磁界検知セルが配置された空隙をもつ磁気コア部とからなる請求項17記載の電流センサー。
- 前記両変調器により変調された4つの位相の出力の加算又は減算により前記ゲイン補正及び/又は前記オフセット補正の情報を求める請求項1〜18のいずれかに記載の磁界センサーを用いた外部磁界を測定する方法であって、
その外部磁界に前記基準磁界変調器で変調された基準磁界を重畳するステップと、前記基準磁界の変調周波数と異なる周波数で磁界検知セルの出力信号を前記磁界検知セル変調器で変調するステップと、前記外部磁界に対応する測定信号と前記基準磁界に対応する基準信号とを別々に抽出するため、前記両変調器により変調された4つの位相の出力を加算または減算するステップとを備えた外部磁界を測定する方法。 - 前記変調された基準磁界の変調周波数が、前記変調磁界検知セル信号の変調周波数と整数倍数分だけ異なる請求項19記載の外部磁界を測定する方法。
- 前記整数倍数が2である請求項20記載の外部磁界を測定する方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04405584.6 | 2004-09-16 | ||
EP04405584A EP1637898A1 (en) | 2004-09-16 | 2004-09-16 | Continuously calibrated magnetic field sensor |
PCT/IB2005/002856 WO2006056829A1 (en) | 2004-09-16 | 2005-09-14 | Continuously calibrated magnetic field sensor |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008513762A JP2008513762A (ja) | 2008-05-01 |
JP4757260B2 true JP4757260B2 (ja) | 2011-08-24 |
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Application Number | Title | Priority Date | Filing Date |
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JP2007531864A Active JP4757260B2 (ja) | 2004-09-16 | 2005-09-14 | 連続校正式磁界センサー |
Country Status (5)
Country | Link |
---|---|
US (1) | US7746065B2 (ja) |
EP (2) | EP1637898A1 (ja) |
JP (1) | JP4757260B2 (ja) |
CN (1) | CN101023367B (ja) |
WO (1) | WO2006056829A1 (ja) |
Families Citing this family (192)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6513252B1 (en) | 1999-04-08 | 2003-02-04 | Donnelly Corporation | Vehicle compass compensation |
WO2007122542A2 (en) * | 2006-04-26 | 2007-11-01 | Koninklijke Philips Electronics N. V. | Calibration of a magnetic sensor device |
DE102006059421B4 (de) * | 2006-07-14 | 2011-06-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Verarbeitung von Offset-behafteten Sensorsignalen sowie für die Durchführung des Verfahrens ausgebildete Sensoranordnung |
DE102006037226B4 (de) * | 2006-08-09 | 2008-05-29 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Im Messbetrieb kalibrierbarer magnetischer 3D-Punktsensor |
GB0620307D0 (en) * | 2006-10-16 | 2006-11-22 | Ami Semiconductor Belgium Bvba | Auto-calibration of magnetic sensor |
US7425821B2 (en) * | 2006-10-19 | 2008-09-16 | Allegro Microsystems, Inc. | Chopped Hall effect sensor |
US7818890B2 (en) | 2006-11-27 | 2010-10-26 | Nxp B.V. | Magnetic field sensor circuit |
US7358880B1 (en) * | 2007-02-07 | 2008-04-15 | Cirrus Logic, Inc. | Magnetic field feedback delta-sigma modulator sensor circuit |
DE102007012214A1 (de) * | 2007-03-12 | 2008-09-18 | Micronas Gmbh | Halbleiterbauelement und Verfahren zum Testen eines solchen |
US7800389B2 (en) | 2007-07-13 | 2010-09-21 | Allegro Microsystems, Inc. | Integrated circuit having built-in self-test features |
US7694200B2 (en) | 2007-07-18 | 2010-04-06 | Allegro Microsystems, Inc. | Integrated circuit having built-in self-test features |
DE202007010962U1 (de) * | 2007-08-07 | 2008-12-18 | Ic-Haus Gmbh | Messvorrichtung mit Spinning-Current-Hallsensor |
US9823090B2 (en) | 2014-10-31 | 2017-11-21 | Allegro Microsystems, Llc | Magnetic field sensor for sensing a movement of a target object |
US8965726B2 (en) * | 2008-02-20 | 2015-02-24 | Robert Bosch Gmbh | System and method for measuring DC offset in a sensor output by modulating a signal-independent operating parameter of the sensor |
US7923996B2 (en) * | 2008-02-26 | 2011-04-12 | Allegro Microsystems, Inc. | Magnetic field sensor with automatic sensitivity adjustment |
DE102008000943B4 (de) * | 2008-04-02 | 2015-02-19 | Zf Friedrichshafen Ag | Diagnostizierbarer Hallsensor und Verfahren zur Funktionsdiagnose einer Hall-Sensoreinrichtung |
EP2108966A1 (en) | 2008-04-08 | 2009-10-14 | Ecole Polytechnique Fédérale de Lausanne (EPFL) | Current sensor and assembly group for current measurement |
CN101762796B (zh) * | 2008-12-24 | 2013-02-13 | 上海华虹Nec电子有限公司 | 磁场检测器 |
WO2010096367A1 (en) | 2009-02-17 | 2010-08-26 | Allegro Microsystems, Inc. | Circuits and methods for generating a self-test of a magnetic field sensor |
US7990209B2 (en) * | 2009-06-19 | 2011-08-02 | Allegro Microsystems, Inc. | Switched capacitor notch filter |
EP2634592B1 (en) * | 2009-07-22 | 2015-01-14 | Allegro Microsystems, LLC | Circuits and methods for generating a diagnostic mode of operation in a magnetic field sensor |
US8416014B2 (en) * | 2010-03-12 | 2013-04-09 | Allegro Microsystems, Inc. | Switched capacitor notch filter with fast response time |
DE102010019485B4 (de) * | 2010-05-05 | 2012-10-31 | Austriamicrosystems Ag | Sensoranordnung und Verfahren zum Betreiben einer Sensoranordnung |
DE102010019484B9 (de) | 2010-05-05 | 2012-12-06 | Austriamicrosystems Ag | Sensoranordnung und Verfahren zum Betreiben einer Sensoranordnung |
US8779777B2 (en) | 2010-06-04 | 2014-07-15 | Linear Technology Corporation | Dynamic compensation of aging drift in current sense resistor |
JP5004368B2 (ja) * | 2010-06-24 | 2012-08-22 | スミダコーポレーション株式会社 | 電流センサ |
EP2402777B1 (en) * | 2010-06-30 | 2013-01-09 | LEM Intellectual Property SA | Autonomously calibrated magnetic field sensor |
EP2402779A1 (en) * | 2010-07-02 | 2012-01-04 | Liaisons Electroniques-Mecaniques Lem S.A. | Hall sensor system |
US8564285B2 (en) * | 2010-07-28 | 2013-10-22 | Allegro Microsystems, Llc | Magnetic field sensor with improved differentiation between a sensed magnetic field signal and a noise signal |
IT1402178B1 (it) | 2010-09-09 | 2013-08-28 | St Microelectronics Srl | Circuito di lettura a compensazione automatica dell'offset per un sensore di campo magnetico e relativo metodo di lettura a compensazione automatica dell'offset |
US9346441B2 (en) * | 2010-09-24 | 2016-05-24 | Infineon Technologies Ag | Sensor self-diagnostics using multiple signal paths |
US10145882B2 (en) * | 2010-09-24 | 2018-12-04 | Infineon Technologies Ag | Sensor self-diagnostics using multiple signal paths |
US9874609B2 (en) | 2010-09-24 | 2018-01-23 | Infineon Technologies Ag | Sensor self-diagnostics using multiple signal paths |
CN102445671B (zh) * | 2010-10-13 | 2015-12-16 | 北京中科信电子装备有限公司 | 一种霍尔器件误差补偿电路 |
UA99187C2 (ru) * | 2010-10-21 | 2012-07-25 | Инесса Антоновна Большакова | Способ измерения магнитного поля |
US10473731B2 (en) | 2010-11-26 | 2019-11-12 | Stmicroelectronics S.R.L. | Magnetic sensor reading device, system and method |
DE102010062237A1 (de) | 2010-12-01 | 2012-06-06 | Robert Bosch Gmbh | Verfahren zum Kalibrieren eines Magnetfeldsensors |
JP5764949B2 (ja) * | 2011-02-02 | 2015-08-19 | セイコーエプソン株式会社 | 磁場計測装置 |
US8786279B2 (en) | 2011-02-25 | 2014-07-22 | Allegro Microsystems, Llc | Circuit and method for processing signals generated by a plurality of sensors |
US9062990B2 (en) | 2011-02-25 | 2015-06-23 | Allegro Microsystems, Llc | Circular vertical hall magnetic field sensing element and method with a plurality of continuous output signals |
US8729890B2 (en) | 2011-04-12 | 2014-05-20 | Allegro Microsystems, Llc | Magnetic angle and rotation speed sensor with continuous and discontinuous modes of operation based on rotation speed of a target object |
US8680846B2 (en) * | 2011-04-27 | 2014-03-25 | Allegro Microsystems, Llc | Circuits and methods for self-calibrating or self-testing a magnetic field sensor |
GB2481482B (en) * | 2011-04-27 | 2012-06-20 | Univ Manchester | Improvements in sensors |
US8860410B2 (en) | 2011-05-23 | 2014-10-14 | Allegro Microsystems, Llc | Circuits and methods for processing a signal generated by a plurality of measuring devices |
US8890518B2 (en) | 2011-06-08 | 2014-11-18 | Allegro Microsystems, Llc | Arrangements for self-testing a circular vertical hall (CVH) sensing element and/or for self-testing a magnetic field sensor that uses a circular vertical hall (CVH) sensing element |
US8604777B2 (en) | 2011-07-13 | 2013-12-10 | Allegro Microsystems, Llc | Current sensor with calibration for a current divider configuration |
US8793085B2 (en) | 2011-08-19 | 2014-07-29 | Allegro Microsystems, Llc | Circuits and methods for automatically adjusting a magnetic field sensor in accordance with a speed of rotation sensed by the magnetic field sensor |
US8922206B2 (en) | 2011-09-07 | 2014-12-30 | Allegro Microsystems, Llc | Magnetic field sensing element combining a circular vertical hall magnetic field sensing element with a planar hall element |
WO2013038176A2 (en) * | 2011-09-12 | 2013-03-21 | Metroic Limited | Current measurement |
US9285438B2 (en) | 2011-09-28 | 2016-03-15 | Allegro Microsystems, Llc | Circuits and methods for processing signals generated by a plurality of magnetic field sensing elements |
US9354257B2 (en) | 2011-11-04 | 2016-05-31 | General Electric Company | Systems and methods for use in measuring current through a conductor |
US9046383B2 (en) | 2012-01-09 | 2015-06-02 | Allegro Microsystems, Llc | Systems and methods that use magnetic field sensors to identify positions of a gear shift lever |
WO2013111521A1 (ja) * | 2012-01-25 | 2013-08-01 | 旭化成エレクトロニクス株式会社 | ホール起電力信号検出回路及びその電流センサ |
JP5687223B2 (ja) * | 2012-01-27 | 2015-03-18 | 旭化成エレクトロニクス株式会社 | 信号処理装置、回転角度検出装置及び調整値設定装置 |
US9201122B2 (en) * | 2012-02-16 | 2015-12-01 | Allegro Microsystems, Llc | Circuits and methods using adjustable feedback for self-calibrating or self-testing a magnetic field sensor with an adjustable time constant |
US9182456B2 (en) | 2012-03-06 | 2015-11-10 | Allegro Microsystems, Llc | Magnetic field sensor for sensing rotation of an object |
US10215550B2 (en) | 2012-05-01 | 2019-02-26 | Allegro Microsystems, Llc | Methods and apparatus for magnetic sensors having highly uniform magnetic fields |
US9817078B2 (en) | 2012-05-10 | 2017-11-14 | Allegro Microsystems Llc | Methods and apparatus for magnetic sensor having integrated coil |
WO2014025265A1 (en) * | 2012-08-07 | 2014-02-13 | Hts-110 Limited | Improved magnetic field control |
TWI451095B (zh) * | 2012-12-10 | 2014-09-01 | Ind Tech Res Inst | 電流偵測電路及其方法 |
US9606190B2 (en) | 2012-12-21 | 2017-03-28 | Allegro Microsystems, Llc | Magnetic field sensor arrangements and associated methods |
US9417295B2 (en) | 2012-12-21 | 2016-08-16 | Allegro Microsystems, Llc | Circuits and methods for processing signals generated by a circular vertical hall (CVH) sensing element in the presence of a multi-pole magnet |
US8749005B1 (en) | 2012-12-21 | 2014-06-10 | Allegro Microsystems, Llc | Magnetic field sensor and method of fabricating a magnetic field sensor having a plurality of vertical hall elements arranged in at least a portion of a polygonal shape |
US9354123B2 (en) | 2012-12-26 | 2016-05-31 | Allegro Microsystems, Llc | Systems and methods for processing temperature data or other signals |
US9383425B2 (en) | 2012-12-28 | 2016-07-05 | Allegro Microsystems, Llc | Methods and apparatus for a current sensor having fault detection and self test functionality |
US9548443B2 (en) | 2013-01-29 | 2017-01-17 | Allegro Microsystems, Llc | Vertical Hall Effect element with improved sensitivity |
US9377285B2 (en) | 2013-02-13 | 2016-06-28 | Allegro Microsystems, Llc | Magnetic field sensor and related techniques that provide varying current spinning phase sequences of a magnetic field sensing element |
US9389060B2 (en) | 2013-02-13 | 2016-07-12 | Allegro Microsystems, Llc | Magnetic field sensor and related techniques that provide an angle error correction module |
US10725100B2 (en) | 2013-03-15 | 2020-07-28 | Allegro Microsystems, Llc | Methods and apparatus for magnetic sensor having an externally accessible coil |
US9099638B2 (en) | 2013-03-15 | 2015-08-04 | Allegro Microsystems, Llc | Vertical hall effect element with structures to improve sensitivity |
US9664494B2 (en) | 2013-05-10 | 2017-05-30 | Allegro Microsystems, Llc | Magnetic field sensor with immunity to external magnetic influences |
GB201309825D0 (en) | 2013-06-01 | 2013-07-17 | Metroic Ltd | Current measurement |
GB201309823D0 (en) * | 2013-06-01 | 2013-07-17 | Metroic Ltd | Current measurement |
JP6188430B2 (ja) * | 2013-06-03 | 2017-08-30 | 三菱電機株式会社 | 電流検出装置 |
US10145908B2 (en) | 2013-07-19 | 2018-12-04 | Allegro Microsystems, Llc | Method and apparatus for magnetic sensor producing a changing magnetic field |
US9810519B2 (en) | 2013-07-19 | 2017-11-07 | Allegro Microsystems, Llc | Arrangements for magnetic field sensors that act as tooth detectors |
US10495699B2 (en) | 2013-07-19 | 2019-12-03 | Allegro Microsystems, Llc | Methods and apparatus for magnetic sensor having an integrated coil or magnet to detect a non-ferromagnetic target |
US9400164B2 (en) | 2013-07-22 | 2016-07-26 | Allegro Microsystems, Llc | Magnetic field sensor and related techniques that provide an angle correction module |
US9229066B2 (en) | 2013-08-15 | 2016-01-05 | Texas Instruments Incorporated | Integrated fluxgate magnetic sensor and excitation circuitry |
JP2015049046A (ja) * | 2013-08-29 | 2015-03-16 | アルプス電気株式会社 | 角度検出装置 |
US9312473B2 (en) | 2013-09-30 | 2016-04-12 | Allegro Microsystems, Llc | Vertical hall effect sensor |
FR3011639B1 (fr) * | 2013-10-08 | 2017-05-26 | Continental Automotive France | Procede de mesure d'un champ magnetique au moyen d'un capteur a effet hall a decoupage |
JP6158682B2 (ja) * | 2013-10-25 | 2017-07-05 | エスアイアイ・セミコンダクタ株式会社 | 磁気センサ回路 |
CN104682785B (zh) * | 2013-11-29 | 2017-03-01 | 晶致半导体股份有限公司 | 具有校正功能的驱动芯片及其应用的马达驱动*** |
TWI485974B (zh) * | 2013-11-29 | 2015-05-21 | Amtek Semiconductor Co Ltd | 具有校正功能之驅動晶片及其應用之馬達驅動系統 |
US9574867B2 (en) | 2013-12-23 | 2017-02-21 | Allegro Microsystems, Llc | Magnetic field sensor and related techniques that inject an error correction signal into a signal channel to result in reduced error |
US10120042B2 (en) | 2013-12-23 | 2018-11-06 | Allegro Microsystems, Llc | Magnetic field sensor and related techniques that inject a synthesized error correction signal into a signal channel to result in reduced error |
WO2015100214A2 (en) | 2013-12-26 | 2015-07-02 | Allegro Microsystems, Llc | Methods and apparatus for sensor diagnostics |
US9547048B2 (en) | 2014-01-14 | 2017-01-17 | Allegro Micosystems, LLC | Circuit and method for reducing an offset component of a plurality of vertical hall elements arranged in a circle |
US9638762B2 (en) | 2014-02-24 | 2017-05-02 | Infineon Technologies Ag | Highly efficient diagnostic methods for monolithic sensor systems |
US9534932B2 (en) * | 2014-03-07 | 2017-01-03 | Infineon Technologies Ag | XMR angle sensor arrangement with safety mechanism and method for monitoring the same |
US9645220B2 (en) * | 2014-04-17 | 2017-05-09 | Allegro Microsystems, Llc | Circuits and methods for self-calibrating or self-testing a magnetic field sensor using phase discrimination |
US9735773B2 (en) | 2014-04-29 | 2017-08-15 | Allegro Microsystems, Llc | Systems and methods for sensing current through a low-side field effect transistor |
US9753097B2 (en) | 2014-05-05 | 2017-09-05 | Allegro Microsystems, Llc | Magnetic field sensors and associated methods with reduced offset and improved accuracy |
US9448288B2 (en) | 2014-05-20 | 2016-09-20 | Allegro Microsystems, Llc | Magnetic field sensor with improved accuracy resulting from a digital potentiometer |
US9851416B2 (en) | 2014-07-22 | 2017-12-26 | Allegro Microsystems, Llc | Systems and methods for magnetic field sensors with self-test |
KR20170043647A (ko) * | 2014-09-26 | 2017-04-21 | 아사히 가세이 일렉트로닉스 가부시끼가이샤 | 홀 기전력 신호 검출 회로 및 전류 센서 |
US9739846B2 (en) | 2014-10-03 | 2017-08-22 | Allegro Microsystems, Llc | Magnetic field sensors with self test |
US9719806B2 (en) | 2014-10-31 | 2017-08-01 | Allegro Microsystems, Llc | Magnetic field sensor for sensing a movement of a ferromagnetic target object |
US9720054B2 (en) | 2014-10-31 | 2017-08-01 | Allegro Microsystems, Llc | Magnetic field sensor and electronic circuit that pass amplifier current through a magnetoresistance element |
US9823092B2 (en) | 2014-10-31 | 2017-11-21 | Allegro Microsystems, Llc | Magnetic field sensor providing a movement detector |
US10156461B2 (en) | 2014-10-31 | 2018-12-18 | Allegro Microsystems, Llc | Methods and apparatus for error detection in a magnetic field sensor |
US10712403B2 (en) | 2014-10-31 | 2020-07-14 | Allegro Microsystems, Llc | Magnetic field sensor and electronic circuit that pass amplifier current through a magnetoresistance element |
US9804222B2 (en) * | 2014-11-14 | 2017-10-31 | Allegro Microsystems, Llc | Magnetic field sensor with shared path amplifier and analog-to-digital-converter |
US9804249B2 (en) | 2014-11-14 | 2017-10-31 | Allegro Microsystems, Llc | Dual-path analog to digital converter |
US10466298B2 (en) | 2014-11-14 | 2019-11-05 | Allegro Microsystems, Llc | Magnetic field sensor with shared path amplifier and analog-to-digital-converter |
US9841485B2 (en) | 2014-11-14 | 2017-12-12 | Allegro Microsystems, Llc | Magnetic field sensor having calibration circuitry and techniques |
US9638766B2 (en) | 2014-11-24 | 2017-05-02 | Allegro Microsystems, Llc | Magnetic field sensor with improved accuracy resulting from a variable potentiometer and a gain circuit |
TWI582447B (zh) * | 2014-12-11 | 2017-05-11 | 財團法人工業技術研究院 | 磁場感測裝置及其磁場感測方法 |
US9684042B2 (en) | 2015-02-27 | 2017-06-20 | Allegro Microsystems, Llc | Magnetic field sensor with improved accuracy and method of obtaining improved accuracy with a magnetic field sensor |
US10120041B2 (en) | 2015-03-27 | 2018-11-06 | Allegro Microsystems, Llc | Magnetic field sensor |
US9638764B2 (en) | 2015-04-08 | 2017-05-02 | Allegro Microsystems, Llc | Electronic circuit for driving a hall effect element with a current compensated for substrate stress |
US9523742B2 (en) * | 2015-04-27 | 2016-12-20 | Allegro Microsystems, Llc | Circuits and methods for modulating current in circuits comprising sensing elements |
US11092656B2 (en) * | 2015-05-12 | 2021-08-17 | Texas Instruments Incorporated | Fluxgate magnetic field detection method and circuit |
DE102015109009A1 (de) | 2015-06-08 | 2016-12-08 | Infineon Technologies Ag | Stromsensorchip mit Magnetfeldsensor |
US11163022B2 (en) | 2015-06-12 | 2021-11-02 | Allegro Microsystems, Llc | Magnetic field sensor for angle detection with a phase-locked loop |
US9851417B2 (en) | 2015-07-28 | 2017-12-26 | Allegro Microsystems, Llc | Structure and system for simultaneous sensing a magnetic field and mechanical stress |
US10527703B2 (en) | 2015-12-16 | 2020-01-07 | Allegro Microsystems, Llc | Circuits and techniques for performing self-test diagnostics in a magnetic field sensor |
US9739848B1 (en) | 2016-02-01 | 2017-08-22 | Allegro Microsystems, Llc | Circular vertical hall (CVH) sensing element with sliding integration |
US10481220B2 (en) | 2016-02-01 | 2019-11-19 | Allegro Microsystems, Llc | Circular vertical hall (CVH) sensing element with signal processing and arctangent function |
US9739847B1 (en) | 2016-02-01 | 2017-08-22 | Allegro Microsystems, Llc | Circular vertical hall (CVH) sensing element with signal processing |
US10107873B2 (en) | 2016-03-10 | 2018-10-23 | Allegro Microsystems, Llc | Electronic circuit for compensating a sensitivity drift of a hall effect element due to stress |
JP6430565B2 (ja) | 2016-03-23 | 2018-11-28 | アナログ・デヴァイシズ・グローバル | 磁界検出器 |
KR102043210B1 (ko) * | 2016-04-19 | 2019-11-12 | 인피니온 테크놀로지스 아게 | 다중 신호 경로들을 사용하는 센서 자체 진단 |
CN107340483B (zh) * | 2016-04-29 | 2021-08-20 | 德昌电机(深圳)有限公司 | 一种磁传感器、磁传感器集成电路、电机组件及应用设备 |
US10132879B2 (en) * | 2016-05-23 | 2018-11-20 | Allegro Microsystems, Llc | Gain equalization for multiple axis magnetic field sensing |
US10012518B2 (en) | 2016-06-08 | 2018-07-03 | Allegro Microsystems, Llc | Magnetic field sensor for sensing a proximity of an object |
US10041810B2 (en) | 2016-06-08 | 2018-08-07 | Allegro Microsystems, Llc | Arrangements for magnetic field sensors that act as movement detectors |
US10385964B2 (en) | 2016-06-08 | 2019-08-20 | Allegro Microsystems, Llc | Enhanced neutral gear sensor |
US10260905B2 (en) | 2016-06-08 | 2019-04-16 | Allegro Microsystems, Llc | Arrangements for magnetic field sensors to cancel offset variations |
US10585147B2 (en) | 2016-06-14 | 2020-03-10 | Allegro Microsystems, Llc | Magnetic field sensor having error correction |
US10162017B2 (en) | 2016-07-12 | 2018-12-25 | Allegro Microsystems, Llc | Systems and methods for reducing high order hall plate sensitivity temperature coefficients |
DE102016014891B4 (de) * | 2016-12-15 | 2019-03-14 | Tdk-Micronas Gmbh | Kalibrierungsverfahren für einen Hall-Effekt-Sensor |
US10739164B2 (en) | 2017-01-27 | 2020-08-11 | Allegro Microsystems, Llc | Circuit for detecting motion of an object |
US10495701B2 (en) | 2017-03-02 | 2019-12-03 | Allegro Microsystems, Llc | Circular vertical hall (CVH) sensing element with DC offset removal |
US10310028B2 (en) | 2017-05-26 | 2019-06-04 | Allegro Microsystems, Llc | Coil actuated pressure sensor |
US11428755B2 (en) | 2017-05-26 | 2022-08-30 | Allegro Microsystems, Llc | Coil actuated sensor with sensitivity detection |
US10996289B2 (en) | 2017-05-26 | 2021-05-04 | Allegro Microsystems, Llc | Coil actuated position sensor with reflected magnetic field |
US10837943B2 (en) | 2017-05-26 | 2020-11-17 | Allegro Microsystems, Llc | Magnetic field sensor with error calculation |
US10641842B2 (en) | 2017-05-26 | 2020-05-05 | Allegro Microsystems, Llc | Targets for coil actuated position sensors |
US10324141B2 (en) | 2017-05-26 | 2019-06-18 | Allegro Microsystems, Llc | Packages for coil actuated position sensors |
US10211739B2 (en) | 2017-06-28 | 2019-02-19 | Semiconductor Components Industries, Llc | Methods and apparatus for an integrated circuit |
US10739165B2 (en) | 2017-07-05 | 2020-08-11 | Analog Devices Global | Magnetic field sensor |
CN107340488B (zh) * | 2017-07-28 | 2023-09-19 | 杭州思泰微电子有限公司 | 一种多点多载波校正***及校正方法 |
US10520559B2 (en) | 2017-08-14 | 2019-12-31 | Allegro Microsystems, Llc | Arrangements for Hall effect elements and vertical epi resistors upon a substrate |
US10823764B2 (en) | 2017-09-01 | 2020-11-03 | Te Connectivity Corporation | Hall effect current sensor |
US10763055B2 (en) | 2017-09-01 | 2020-09-01 | Te Connectivity Corporation | Pin configurable smart current sensor |
US10481219B2 (en) * | 2017-09-11 | 2019-11-19 | Allegro Microsystems, Llc | Magnetic field sensor with feedback loop for test signal processing |
US10444299B2 (en) * | 2017-09-11 | 2019-10-15 | Allegro Microsystems, Llc | Magnetic field sensor's front end and associated mixed signal method for removing chopper's related ripple |
EP3467528B1 (en) | 2017-10-06 | 2020-05-20 | Melexis Technologies NV | Magnetic sensor sensitivity matching calibration |
US20210190893A1 (en) | 2017-10-06 | 2021-06-24 | Melexis Technologies Nv | Magnetic sensor sensitivity matching calibration |
US10591320B2 (en) | 2017-12-11 | 2020-03-17 | Nxp B.V. | Magnetoresistive sensor with stray field cancellation and systems incorporating same |
JP7061882B2 (ja) * | 2018-01-19 | 2022-05-02 | 株式会社アドバンテスト | 測定装置、方法、プログラム、記録媒体 |
EP3517897B1 (en) * | 2018-01-25 | 2020-10-28 | Melexis Technologies SA | Position sensing device |
US10509082B2 (en) | 2018-02-08 | 2019-12-17 | Nxp B.V. | Magnetoresistive sensor systems with stray field cancellation utilizing auxiliary sensor signals |
US11143732B2 (en) * | 2018-02-21 | 2021-10-12 | Allegro Microsystems, Llc | Magnetic field sensor with modulated diagnostic signal |
US10866117B2 (en) | 2018-03-01 | 2020-12-15 | Allegro Microsystems, Llc | Magnetic field influence during rotation movement of magnetic target |
US10698066B2 (en) * | 2018-04-13 | 2020-06-30 | Texas Instruments Incorporated | Calibration of hall device sensitivity using an auxiliary hall device |
US11255700B2 (en) | 2018-08-06 | 2022-02-22 | Allegro Microsystems, Llc | Magnetic field sensor |
CN109559423B (zh) * | 2018-11-23 | 2020-11-06 | 威海华菱光电股份有限公司 | 检测方法、检测装置、存储介质和处理器 |
US10823586B2 (en) | 2018-12-26 | 2020-11-03 | Allegro Microsystems, Llc | Magnetic field sensor having unequally spaced magnetic field sensing elements |
JP7006633B2 (ja) | 2019-02-13 | 2022-01-24 | Tdk株式会社 | 磁気センサシステム |
US11061084B2 (en) | 2019-03-07 | 2021-07-13 | Allegro Microsystems, Llc | Coil actuated pressure sensor and deflectable substrate |
US11047933B2 (en) | 2019-04-02 | 2021-06-29 | Allegro Microsystems, Llc | Fast response magnetic field sensors and associated methods for removing undesirable spectral components |
JP2020171162A (ja) * | 2019-04-04 | 2020-10-15 | 日本電産株式会社 | モータ |
JP2020178448A (ja) * | 2019-04-18 | 2020-10-29 | 日本電産株式会社 | モータ |
US10955306B2 (en) | 2019-04-22 | 2021-03-23 | Allegro Microsystems, Llc | Coil actuated pressure sensor and deformable substrate |
CN110244129A (zh) * | 2019-07-09 | 2019-09-17 | 南京林业大学 | 一种感应式电导率传感器反馈式可控激励磁场发生器 |
US11237020B2 (en) | 2019-11-14 | 2022-02-01 | Allegro Microsystems, Llc | Magnetic field sensor having two rows of magnetic field sensing elements for measuring an angle of rotation of a magnet |
US11280637B2 (en) | 2019-11-14 | 2022-03-22 | Allegro Microsystems, Llc | High performance magnetic angle sensor |
US11002804B1 (en) * | 2020-01-14 | 2021-05-11 | Honeywell International Inc. | Magnetic field sensor compensation methods and systems |
US11194004B2 (en) | 2020-02-12 | 2021-12-07 | Allegro Microsystems, Llc | Diagnostic circuits and methods for sensor test circuits |
US11169223B2 (en) | 2020-03-23 | 2021-11-09 | Allegro Microsystems, Llc | Hall element signal calibrating in angle sensor |
JP2021152512A (ja) * | 2020-03-24 | 2021-09-30 | 甲神電機株式会社 | ホール素子センサおよびその動作方法 |
US11262422B2 (en) | 2020-05-08 | 2022-03-01 | Allegro Microsystems, Llc | Stray-field-immune coil-activated position sensor |
CN111398650B (zh) * | 2020-06-04 | 2020-10-09 | 华中科技大学 | 一种基于多传感器融合的快响应直流比较仪 |
US11290120B2 (en) * | 2020-08-06 | 2022-03-29 | Cirrus Logic, Inc. | Resistive sensor based data acquisition system using low distortion analog front-end and digital gain error correction |
US11782101B2 (en) | 2020-08-06 | 2023-10-10 | Cirrus Logic, Inc. | Hall sensor-based data acquisition system |
US11307267B1 (en) * | 2020-11-09 | 2022-04-19 | Texas Instruments Incorporated | Hall sensor analog front end |
US11927650B2 (en) | 2021-01-04 | 2024-03-12 | Allegro Microsystems, Llc | Magnetic-field closed-loop sensors with diagnostics |
US11802922B2 (en) | 2021-01-13 | 2023-10-31 | Allegro Microsystems, Llc | Circuit for reducing an offset component of a plurality of vertical hall elements arranged in one or more circles |
DE102021102051A1 (de) * | 2021-01-29 | 2022-08-04 | Infineon Technologies Ag | Vorrichtungen und verfahren zur erfassung von elektrischem strom |
JP2022123649A (ja) * | 2021-02-12 | 2022-08-24 | 株式会社アドバンテスト | 磁場発生器の制御装置、試験装置、及び磁場制御方法 |
US11493361B2 (en) | 2021-02-26 | 2022-11-08 | Allegro Microsystems, Llc | Stray field immune coil-activated sensor |
US11630130B2 (en) | 2021-03-31 | 2023-04-18 | Allegro Microsystems, Llc | Channel sensitivity matching |
US11473935B1 (en) | 2021-04-16 | 2022-10-18 | Allegro Microsystems, Llc | System and related techniques that provide an angle sensor for sensing an angle of rotation of a ferromagnetic screw |
US11578997B1 (en) | 2021-08-24 | 2023-02-14 | Allegro Microsystems, Llc | Angle sensor using eddy currents |
EP4170292B1 (en) * | 2021-10-25 | 2024-04-03 | Melexis Technologies SA | Sensor device and system with non-linearity compensation |
US11848682B2 (en) | 2022-01-11 | 2023-12-19 | Allegro Microsystems, Llc | Diagnostic circuits and methods for analog-to-digital converters |
US11994541B2 (en) | 2022-04-15 | 2024-05-28 | Allegro Microsystems, Llc | Current sensor assemblies for low currents |
EP4382941A1 (en) * | 2022-12-07 | 2024-06-12 | LX Semicon Co., Ltd. | Analog front-end circuit and camera module control driver including the same |
US20240230791A1 (en) * | 2023-01-10 | 2024-07-11 | Allegro Microsystems, Llc | Self-calibrating magnetoresistance-based magnetic field sensors |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51117080A (en) * | 1975-04-07 | 1976-10-14 | Ricoh Co Ltd | Magnetic field measuring method using hall element |
JPS6148777A (ja) * | 1984-08-16 | 1986-03-10 | エルゲーツエツト・ランデイス・ウント・ギール・ツーク・アクチエンゲゼルシヤフト | 磁場センサの変換係数変動補償装置 |
JPH0425780A (ja) * | 1990-05-21 | 1992-01-29 | Sharp Corp | 超電導磁界測定装置 |
JPH0440384A (ja) * | 1990-06-05 | 1992-02-10 | Sumitomo Electric Ind Ltd | センサ回路 |
JPH06235759A (ja) * | 1992-12-31 | 1994-08-23 | Honeywell Inc | 磁化切換え形閉ループ磁力計 |
JPH06317637A (ja) * | 1993-05-06 | 1994-11-15 | Murata Mfg Co Ltd | 磁性検出装置 |
JP2000065909A (ja) * | 1998-08-20 | 2000-03-03 | Osaki Electric Co Ltd | 磁気センサ回路 |
JP2003149313A (ja) * | 2001-08-30 | 2003-05-21 | Toshiba Corp | 磁性体検出装置およびホール素子 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4037150A (en) * | 1973-05-30 | 1977-07-19 | Sergei Glebovich Taranov | Method of and apparatus for eliminating the effect of non-equipotentiality voltage on the hall voltage |
JP3782915B2 (ja) * | 2000-02-16 | 2006-06-07 | セイコーインスツル株式会社 | 磁気センサを有する電子機器 |
DE10062292A1 (de) * | 2000-12-14 | 2002-03-07 | Infineon Technologies Ag | Meßanordnung, insbesondere zur Erfassung von Magnetfeldern |
-
2004
- 2004-09-16 EP EP04405584A patent/EP1637898A1/en not_active Withdrawn
-
2005
- 2005-09-14 CN CN2005800311762A patent/CN101023367B/zh active Active
- 2005-09-14 JP JP2007531864A patent/JP4757260B2/ja active Active
- 2005-09-14 US US11/663,136 patent/US7746065B2/en active Active
- 2005-09-14 EP EP05850649.4A patent/EP1789813B1/en active Active
- 2005-09-14 WO PCT/IB2005/002856 patent/WO2006056829A1/en active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51117080A (en) * | 1975-04-07 | 1976-10-14 | Ricoh Co Ltd | Magnetic field measuring method using hall element |
JPS6148777A (ja) * | 1984-08-16 | 1986-03-10 | エルゲーツエツト・ランデイス・ウント・ギール・ツーク・アクチエンゲゼルシヤフト | 磁場センサの変換係数変動補償装置 |
JPH0425780A (ja) * | 1990-05-21 | 1992-01-29 | Sharp Corp | 超電導磁界測定装置 |
JPH0440384A (ja) * | 1990-06-05 | 1992-02-10 | Sumitomo Electric Ind Ltd | センサ回路 |
JPH06235759A (ja) * | 1992-12-31 | 1994-08-23 | Honeywell Inc | 磁化切換え形閉ループ磁力計 |
JPH06317637A (ja) * | 1993-05-06 | 1994-11-15 | Murata Mfg Co Ltd | 磁性検出装置 |
JP2000065909A (ja) * | 1998-08-20 | 2000-03-03 | Osaki Electric Co Ltd | 磁気センサ回路 |
JP2003149313A (ja) * | 2001-08-30 | 2003-05-21 | Toshiba Corp | 磁性体検出装置およびホール素子 |
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CN101023367A (zh) | 2007-08-22 |
US7746065B2 (en) | 2010-06-29 |
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EP1637898A1 (en) | 2006-03-22 |
US20070247141A1 (en) | 2007-10-25 |
EP1789813A1 (en) | 2007-05-30 |
CN101023367B (zh) | 2010-06-09 |
WO2006056829A1 (en) | 2006-06-01 |
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