FR2735222B1 - Capteur a effet hall de proximite destine a detecter la presence et/ou le passage d'un objet ferromagnetique - Google Patents

Capteur a effet hall de proximite destine a detecter la presence et/ou le passage d'un objet ferromagnetique

Info

Publication number
FR2735222B1
FR2735222B1 FR9606934A FR9606934A FR2735222B1 FR 2735222 B1 FR2735222 B1 FR 2735222B1 FR 9606934 A FR9606934 A FR 9606934A FR 9606934 A FR9606934 A FR 9606934A FR 2735222 B1 FR2735222 B1 FR 2735222B1
Authority
FR
France
Prior art keywords
passage
detecting
hall sensor
ferromagnetic object
proximity hall
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
FR9606934A
Other languages
English (en)
Other versions
FR2735222A1 (fr
Inventor
Ravi Vig
Teri Tu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Allegro Microsystems Inc
Original Assignee
Allegro Microsystems Inc
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 Allegro Microsystems Inc filed Critical Allegro Microsystems Inc
Publication of FR2735222A1 publication Critical patent/FR2735222A1/fr
Application granted granted Critical
Publication of FR2735222B1 publication Critical patent/FR2735222B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • 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
    • G01D5/147—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 movement of a third element, the position of Hall device and the source of magnetic field being fixed in respect to each other
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Electromagnetism (AREA)
  • Geophysics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Measuring Magnetic Variables (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Hall/Mr Elements (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
FR9606934A 1995-06-07 1996-06-05 Capteur a effet hall de proximite destine a detecter la presence et/ou le passage d'un objet ferromagnetique Expired - Lifetime FR2735222B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/485,697 US5781005A (en) 1995-06-07 1995-06-07 Hall-effect ferromagnetic-article-proximity sensor

Publications (2)

Publication Number Publication Date
FR2735222A1 FR2735222A1 (fr) 1996-12-13
FR2735222B1 true FR2735222B1 (fr) 2001-01-26

Family

ID=23929121

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9606934A Expired - Lifetime FR2735222B1 (fr) 1995-06-07 1996-06-05 Capteur a effet hall de proximite destine a detecter la presence et/ou le passage d'un objet ferromagnetique

Country Status (5)

Country Link
US (1) US5781005A (fr)
JP (1) JP3618466B2 (fr)
KR (1) KR100318230B1 (fr)
DE (1) DE19622561B4 (fr)
FR (1) FR2735222B1 (fr)

Families Citing this family (145)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5744367A (en) * 1994-11-10 1998-04-28 Igen International, Inc. Magnetic particle based electrochemiluminescent detection apparatus and method
DE19726691A1 (de) * 1997-06-24 1999-01-07 Itt Mfg Enterprises Inc Drehwinkelsensor mit einem asymmetrisch angeordneten Permanentmagneten
US6529114B1 (en) * 1998-05-27 2003-03-04 Honeywell International Inc. Magnetic field sensing device
US6274939B1 (en) * 1998-09-11 2001-08-14 American Electronic Components Resin ceramic compositions having magnetic properties
US6112584A (en) * 1999-01-22 2000-09-05 Honda Of America, Mfg., Inc. Magnichanical sensor
US6278269B1 (en) * 1999-03-08 2001-08-21 Allegro Microsystems, Inc. Magnet structure
DE19919207A1 (de) * 1999-04-28 2000-11-02 Focke & Co Verfahren und Vorrichtung zum Prüfen von Zigaretten
JP4159184B2 (ja) * 1999-06-25 2008-10-01 株式会社デルタツーリング 磁気ばね
DE10009173A1 (de) 2000-02-26 2001-09-06 Bosch Gmbh Robert Messvorrichtung zur berührungslosen Erfassung eines ferromagnetischen Gegenstandes
JP4304871B2 (ja) * 2001-02-28 2009-07-29 日本電気株式会社 携帯電話機
US6612404B2 (en) * 2001-05-25 2003-09-02 Thyssen Elevator Capital Corp. Contactless hall effect push button switch
DE10131455B4 (de) * 2001-06-29 2010-09-16 Robert Bosch Gmbh Sensoranordnung zur Detektion eines aus einem ferromagnetischen Material bestehenden Elements
JP3775257B2 (ja) * 2001-07-30 2006-05-17 アイシン精機株式会社 角度センサ
DE10141371A1 (de) * 2001-08-23 2003-03-13 Philips Corp Intellectual Pty Magnetoresistive Sensoreinrichtung
US7009386B2 (en) * 2002-01-02 2006-03-07 Stoneridge Control Devices, Inc. Non-contact position sensor utilizing multiple sensor elements
US6703830B2 (en) * 2002-02-18 2004-03-09 Phoenix America, Inc. Tunable magnetic device for use in a proximity sensor
FR2837569B1 (fr) * 2002-03-19 2004-07-16 Electricfil Capteur de position et/ou de vitesse de type magnetique
JP4169536B2 (ja) * 2002-06-26 2008-10-22 株式会社日本自動車部品総合研究所 アクチュエータ
US7537579B2 (en) * 2002-09-26 2009-05-26 Covidien Ag Safety interlock system for an enteral feeding pump
AU2003279003A1 (en) * 2002-09-27 2004-04-19 Stoneridge Control Devices, Inc. Rail activated position sensor
FR2845469B1 (fr) * 2002-10-07 2005-03-11 Moving Magnet Tech Capteur de position analogique a reluctance variable
DE10247590A1 (de) * 2002-10-11 2004-04-22 Siemens Ag Magnetischer Positionssensor
KR100590211B1 (ko) * 2002-11-21 2006-06-15 가부시키가이샤 덴소 자기 임피던스 소자, 그를 이용한 센서 장치 및 그 제조방법
US7439735B2 (en) * 2003-01-07 2008-10-21 Stoneridge Control Devices, Inc. Rail activated position sensor
US20040130314A1 (en) * 2003-01-08 2004-07-08 Siemens Vdo Automotive Corporation Sensor adjusting magnetic field
JP4108531B2 (ja) * 2003-05-07 2008-06-25 アルプス電気株式会社 部材位置検出装置
JP4413592B2 (ja) * 2003-12-12 2010-02-10 パナソニック株式会社 回転角度検出装置
US7199579B2 (en) * 2004-03-08 2007-04-03 Allegro Microsystems, Inc. Proximity detector
US7365530B2 (en) * 2004-04-08 2008-04-29 Allegro Microsystems, Inc. Method and apparatus for vibration detection
SE527101C2 (sv) * 2004-05-19 2005-12-20 Volvo Lastvagnar Ab Magnetbrytararrangemang och förfarande för att erhålla en differentialmagnetbrytare
SE527102C2 (sv) * 2004-05-19 2005-12-20 Volvo Lastvagnar Ab Magnetdetektorarrangemang och förfarande för att erhålla ett symmetriskt magnetfält
US7082823B1 (en) * 2005-01-14 2006-08-01 Honeywell International, Inc. Digital signal processing back biased hall effect muzzle velocity measurement system
DE102005038516A1 (de) * 2005-07-29 2007-02-08 Valeo Schalter Und Sensoren Gmbh Vorrichtung zur Detektion von Umdrehungen einer Lenkwelle
JP2007147201A (ja) * 2005-11-30 2007-06-14 Japan Servo Co Ltd 自動製氷装置の駆動モータ
DE102006007933A1 (de) * 2006-02-21 2007-08-30 Schaeffler Kg Verfahren und Anordnung zur Vermessung einer Verzahnung
US7722247B2 (en) * 2006-10-06 2010-05-25 Covidien Ag Anti-theft system for thermometer
US7507021B2 (en) * 2006-10-06 2009-03-24 Tyco Healthcare Group Lp Automatic activating system for thermometer
US7816772B2 (en) * 2007-03-29 2010-10-19 Allegro Microsystems, Inc. Methods and apparatus for multi-stage molding of integrated circuit package
US10338158B2 (en) 2007-05-30 2019-07-02 Infineon Technologies Ag Bias magnetic field sensor
DE102007025000B3 (de) 2007-05-30 2008-12-11 Infineon Technologies Ag Magnetfeldsensor
US10852367B2 (en) 2007-05-30 2020-12-01 Infineon Technologies Ag Magnetic-field sensor with a back-bias magnet
US7710110B2 (en) * 2007-07-07 2010-05-04 Honeywell International Inc. Rotary sensor with rotary sensing element and rotatable hollow magnet
US8587297B2 (en) * 2007-12-04 2013-11-19 Infineon Technologies Ag Integrated circuit including sensor having injection molded magnetic material
FR2925139B1 (fr) * 2007-12-17 2010-01-08 Sc2N Sa Capteur de position d'une boite de vitesses et boite de vitesses correspondante
US9823090B2 (en) 2014-10-31 2017-11-21 Allegro Microsystems, Llc Magnetic field sensor for sensing a movement of a target object
US20110187359A1 (en) * 2008-05-30 2011-08-04 Tobias Werth Bias field generation for a magneto sensor
US8610430B2 (en) * 2008-05-30 2013-12-17 Infineon Technologies Ag Bias field generation for a magneto sensor
US8058870B2 (en) * 2008-05-30 2011-11-15 Infineon Technologies Ag Methods and systems for magnetic sensing
US8174256B2 (en) * 2008-05-30 2012-05-08 Infineon Technologies Ag Methods and systems for magnetic field sensing
US8624588B2 (en) 2008-07-31 2014-01-07 Allegro Microsystems, Llc Apparatus and method for providing an output signal indicative of a speed of rotation and a direction of rotation as a ferromagnetic object
FR2936307B1 (fr) 2008-09-24 2010-09-17 Moving Magnet Tech Mmt Capteur de position lineaire ou rotatifa aimant permanent pour la detection d'une cible ferromagnetique
JP5237748B2 (ja) * 2008-10-14 2013-07-17 アルプス電気株式会社 位置検知用磁石及び位置検知装置
FR2937722B1 (fr) 2008-10-24 2010-11-26 Moving Magnet Tech Mmt Capteur de position magnetique a mesure de direction de champ et a collecteur de flux
US20100146931A1 (en) * 2008-11-26 2010-06-17 Lyon Bradley King Method and apparatus for improving efficiency of a hall effect thruster
US8486755B2 (en) * 2008-12-05 2013-07-16 Allegro Microsystems, Llc Magnetic field sensors and methods for fabricating the magnetic field sensors
CN101561242B (zh) * 2008-12-11 2013-04-17 联合汽车电子有限公司 凸轮轴相位传感器
US20100188078A1 (en) * 2009-01-28 2010-07-29 Andrea Foletto Magnetic sensor with concentrator for increased sensing range
KR101095032B1 (ko) * 2009-05-20 2011-12-20 에스엘 주식회사 전자식 변속 장치
US20120098529A1 (en) * 2009-06-30 2012-04-26 Tomen Electronics Corporation Rotation angle detecting device
FR2947902B1 (fr) 2009-07-07 2011-07-22 Moving Magnet Technologies M M T Capteur de position absolue et multi-periodique
FR2952430B1 (fr) 2009-11-06 2012-04-27 Moving Magnet Technologies M M T Capteur de position magnetique bidirectionnel a rotation de champ
US9222993B2 (en) * 2010-07-30 2015-12-29 Mitsubishi Electric Corporation Magnetic substance detection device
FR2965347B1 (fr) 2010-09-29 2015-04-03 Moving Magnet Tech Capteur de position ameliore
KR101220881B1 (ko) * 2011-01-04 2013-01-15 (주)덴토스 무접점 자계센서를 이용한 토크측정장치
EP2525193B1 (fr) 2011-05-17 2016-03-02 Sensata Technologies, Inc. Capteur de proximité magnétique
JP5535139B2 (ja) * 2011-06-30 2014-07-02 株式会社ヴァレオジャパン 近接センサ
DE102011111543A1 (de) * 2011-08-17 2013-02-21 Continental Automotive Gmbh Bedieneinrichtung
JP5873698B2 (ja) * 2011-11-29 2016-03-01 株式会社ユーシン 非接触スイッチ
US8629539B2 (en) 2012-01-16 2014-01-14 Allegro Microsystems, Llc Methods and apparatus for magnetic sensor having non-conductive die paddle
US9666788B2 (en) 2012-03-20 2017-05-30 Allegro Microsystems, Llc Integrated circuit package having a split lead frame
US9494660B2 (en) 2012-03-20 2016-11-15 Allegro Microsystems, Llc Integrated circuit package having a split lead frame
US10234513B2 (en) 2012-03-20 2019-03-19 Allegro Microsystems, Llc Magnetic field sensor integrated circuit with integral ferromagnetic material
US9812588B2 (en) * 2012-03-20 2017-11-07 Allegro Microsystems, Llc Magnetic field sensor integrated circuit with integral ferromagnetic material
JP5961414B2 (ja) * 2012-03-28 2016-08-02 本田技研工業株式会社 スロットル開度検出装置
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
US9329057B2 (en) 2012-05-31 2016-05-03 Allegro Microsystems, Llc Gear tooth sensor with peak and threshold detectors
EP2985619B1 (fr) * 2012-06-18 2023-05-10 Allegro MicroSystems, LLC Capteurs de champ magnétique et techniques associées qui peuvent fournir des informations d'autotest
US8754640B2 (en) 2012-06-18 2014-06-17 Allegro Microsystems, Llc Magnetic field sensors and related techniques that can provide self-test information in a formatted output signal
US9068859B2 (en) 2012-06-18 2015-06-30 Allegro Microsystems, Llc Magnetic field sensors and related techniques provide a self-test by communicating selected analog or digital samples of a proximity signal
US8860404B2 (en) 2012-06-18 2014-10-14 Allegro Microsystems, Llc Magnetic field sensors and related techniques that can provide a self-test using signals and related thresholds
US9222990B2 (en) 2012-06-18 2015-12-29 Allegro Microsystems, Llc Magnetic field sensors and related techniques that can communicate at least one of three or more potential categories in which one or more characteristic values of a proximity signal responsive to a proximity of a sensed object are categorized
EP2713140B1 (fr) 2012-09-26 2014-10-08 Nxp B.V. Système de capteur de champ magnétique comprenant un aimant de polarisation produisant un champ magnétique dans un plan étant défini par des capteurs magnétorésistifs
US9772200B2 (en) * 2013-03-15 2017-09-26 Bourns, Inc. Position measurement using angled collectors
US10725100B2 (en) 2013-03-15 2020-07-28 Allegro Microsystems, Llc Methods and apparatus for magnetic sensor having an externally accessible coil
US9411025B2 (en) 2013-04-26 2016-08-09 Allegro Microsystems, Llc Integrated circuit package having a split lead frame and a magnet
DE102013007901B4 (de) 2013-05-08 2019-04-04 Tdk-Micronas Gmbh Messsystem
DE102013007902B4 (de) 2013-05-08 2019-02-28 Tdk-Micronas Gmbh Messsystem
US10408892B2 (en) * 2013-07-19 2019-09-10 Allegro Microsystems, Llc Magnet with opposing directions of magnetization for a magnetic sensor
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
CN104698209A (zh) * 2013-12-10 2015-06-10 上海森太克汽车电子有限公司 车速传感器结构
KR102267082B1 (ko) 2014-03-11 2021-06-18 알레그로 마이크로시스템스, 엘엘씨 스레쉬홀드들의 최소의 분리를 유지하는 자기장 센서 및 상응하는 센싱 방법
US9583247B2 (en) 2014-05-27 2017-02-28 Allegro Microsystems, Llc Systems and methods for a magnet with uniform magnetic flux
FR3025026B1 (fr) * 2014-08-25 2018-01-19 Valeo Systemes De Controle Moteur Capteur de position lineaire a effet hall pour vehicule automobile
US9823092B2 (en) 2014-10-31 2017-11-21 Allegro Microsystems, Llc Magnetic field sensor providing a movement detector
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
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
US9719806B2 (en) 2014-10-31 2017-08-01 Allegro Microsystems, Llc Magnetic field sensor for sensing a movement of a ferromagnetic target object
KR102469715B1 (ko) 2015-04-10 2022-11-22 알레그로 마이크로시스템스, 엘엘씨 홀 효과 센싱 요소
DE102015013022A1 (de) * 2015-10-09 2017-04-13 Micronas Gmbh Magnetfeldmessvorrichtung
US10495700B2 (en) 2016-01-29 2019-12-03 Allegro Microsystems, Llc Method and system for providing information about a target object in a formatted output signal
US10495485B2 (en) 2016-05-17 2019-12-03 Allegro Microsystems, Llc Magnetic field sensors and output signal formats for a magnetic field sensor
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
US10260905B2 (en) 2016-06-08 2019-04-16 Allegro Microsystems, Llc Arrangements for magnetic field sensors to cancel offset variations
DE102016009209B3 (de) * 2016-08-01 2017-10-19 Tdk-Micronas Gmbh Messsystem
US20180036990A1 (en) * 2016-08-04 2018-02-08 Intertape Polymer Corp. Air pillow machine
WO2018159954A1 (fr) * 2017-03-02 2018-09-07 타이코에이엠피 주식회사 Dispositif de détection de compresseur et compresseur le comprenant
JP6652108B2 (ja) * 2017-05-23 2020-02-19 Tdk株式会社 磁気センサ
US10310028B2 (en) 2017-05-26 2019-06-04 Allegro Microsystems, Llc Coil actuated pressure sensor
US10324141B2 (en) 2017-05-26 2019-06-18 Allegro Microsystems, Llc Packages for coil actuated position sensors
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
US11428755B2 (en) 2017-05-26 2022-08-30 Allegro Microsystems, Llc Coil actuated sensor with sensitivity detection
US10641842B2 (en) 2017-05-26 2020-05-05 Allegro Microsystems, Llc Targets for coil actuated position sensors
US10589430B2 (en) 2017-08-15 2020-03-17 Reconrobotics, Inc. Throwable robot with improved drive system
US10526029B2 (en) 2017-08-15 2020-01-07 Reconrobotics, Inc. Two wheeled robot with convertibility and accessories
US10987818B2 (en) 2017-08-15 2021-04-27 Reconrobotics, Inc. Magnetic lock for throwable robot
US10838022B2 (en) * 2017-09-01 2020-11-17 Panasonic Intellectual Property Management Co., Ltd. Rotational manipulation detector and lens barrel
FR3074896B1 (fr) * 2017-12-11 2021-04-23 Continental Automotive France Capteur magnetique avec structure aimantee pleine et a plusieurs poles d'aimantation alternes
US10866117B2 (en) 2018-03-01 2020-12-15 Allegro Microsystems, Llc Magnetic field influence during rotation movement of magnetic target
US10656170B2 (en) 2018-05-17 2020-05-19 Allegro Microsystems, Llc Magnetic field sensors and output signal formats for a magnetic field sensor
US10921391B2 (en) 2018-08-06 2021-02-16 Allegro Microsystems, Llc Magnetic field sensor with spacer
US11255700B2 (en) 2018-08-06 2022-02-22 Allegro Microsystems, Llc Magnetic field sensor
DE102019122360B4 (de) 2018-08-22 2024-02-01 Tdk Corporation Positionserfassungssystem
JP6848943B2 (ja) * 2018-08-22 2021-03-24 Tdk株式会社 回転検出システム
US10823586B2 (en) 2018-12-26 2020-11-03 Allegro Microsystems, Llc Magnetic field sensor having unequally spaced magnetic field sensing elements
US11061084B2 (en) 2019-03-07 2021-07-13 Allegro Microsystems, Llc Coil actuated pressure sensor and deflectable substrate
US10955306B2 (en) 2019-04-22 2021-03-23 Allegro Microsystems, Llc Coil actuated pressure sensor and deformable substrate
US11041917B2 (en) 2019-05-07 2021-06-22 Allison Transmission, Inc. Sensing systems with orientation selection mechanisms
US11125590B2 (en) 2019-05-07 2021-09-21 Allegro Microsystems, Llc System and method for vibration detection with direction change response immunity using a magnetic field sensor
US11029176B2 (en) 2019-05-07 2021-06-08 Allegro Microsystems, Llc System and method for vibration detection with no loss of position information using a magnetic field sensor
US10991644B2 (en) 2019-08-22 2021-04-27 Allegro Microsystems, Llc Integrated circuit package having a low profile
US11280637B2 (en) 2019-11-14 2022-03-22 Allegro Microsystems, Llc High performance magnetic angle sensor
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
US11385075B2 (en) 2020-02-21 2022-07-12 Allegro Microsystems, Llc Orientation independent magnetic field sensor
US11163021B2 (en) 2020-03-05 2021-11-02 Allegro Microsystems, Llc Sensors having signal redundancy
US11561112B2 (en) 2020-03-13 2023-01-24 Allegro Microsystems, Llc Current sensor having stray field immunity
US11333718B2 (en) 2020-04-15 2022-05-17 Allegro Microsystems, Llc Sensors having dynamic phase compensation
US11262422B2 (en) 2020-05-08 2022-03-01 Allegro Microsystems, Llc Stray-field-immune coil-activated position sensor
US11493361B2 (en) 2021-02-26 2022-11-08 Allegro Microsystems, Llc Stray field immune coil-activated sensor
US11578997B1 (en) 2021-08-24 2023-02-14 Allegro Microsystems, Llc Angle sensor using eddy currents
US11719527B2 (en) 2021-11-04 2023-08-08 Allegro Microsystems, Llc Angle sensor with a single die using a single target

Family Cites Families (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3243692A (en) * 1966-03-29 Travelx-responsive s sensingx d device, particularly for control of fabricating machinery
GB1183503A (en) * 1967-06-16 1970-03-11 Kent Ltd G Improvements in or relating to the measurement of fluid flow
DE2113307C3 (de) * 1971-03-19 1980-09-18 Alfred Teves Gmbh, 6000 Frankfurt Aufnehmer für eine induktive Geschwindigkeitsmeßeinrichtung
US4011476A (en) * 1975-12-22 1977-03-08 Ford Motor Company Signal generating mechanism
US4119911A (en) * 1977-04-22 1978-10-10 Johnson Clark E Jun Magnetoresistor displacement sensor using a magnetoresistor positioned between relatively moving magnetized toothed members
US4207519A (en) * 1978-05-25 1980-06-10 Otdel Fiziki Nerazrusha-Juschego Kontrolya Akademii Nauk Belorusskoi S.S.R. Method and apparatus for detecting defects in workpieces using a core-type magnet with magneto-sensitive detectors
US4293814A (en) * 1979-08-08 1981-10-06 Ford Motor Company Crankshaft position sensor circuitry for providing stable cyclical output signals without regard to peak to peak variations in sensor signals
US4311981A (en) * 1980-11-17 1982-01-19 Luzynski Anthony J Magnetic switch
IT1211140B (it) * 1980-12-09 1989-09-29 Sony Corp Dispositivo commutatore a sensore magnetico.
DE3111387A1 (de) * 1981-03-23 1983-04-28 Papst-Motoren GmbH & Co KG, 7742 St Georgen Verfahren zum abgleich eines kollektorlosen gleichstrommotors und vorrichtung zur durchfuehrung dieses verfahrens
JPS57189011A (en) * 1981-05-15 1982-11-20 Fuji Heavy Ind Ltd Position detecting mechanism
US4443716A (en) * 1982-01-26 1984-04-17 Sprague Electric Company Symmetrical-hysteresis Hall switch
US4518918A (en) * 1982-09-28 1985-05-21 Sprague Electric Company Ferromagnetic article detector with dual Hall-sensors
US4841243A (en) * 1985-04-01 1989-06-20 North American Philips Corp. Side-looking speed sensor
US4700133A (en) * 1986-02-28 1987-10-13 Ssi Technologies, Inc. Variable reluctance magnetic sensor with pole piece and shell projections matched to gear teeth
US4967153A (en) * 1986-09-08 1990-10-30 Langley Lawrence W Eddy current turbomachinery blade timing system
DE3634925A1 (de) * 1986-10-14 1988-04-21 Knuefelmann Manfred Drehzahlmessvorrichtung, insbesondere fuer antiblockiervorrichtungen fuer fahrzeuge, mit magnetoresistivem sensor
US4785242A (en) * 1986-12-15 1988-11-15 Sundstrand Corporation Position detecting apparatus using multiple magnetic sensors for determining relative and absolute angular position
US4859941A (en) * 1987-03-18 1989-08-22 Sprague Electric Company Proximity selectro with integral magnet, pole-piece plate and pair of magnetic transducers
US4922197A (en) * 1988-08-01 1990-05-01 Eaton Corporation High resolution proximity detector employing magnetoresistive sensor disposed within a pressure resistant enclosure
EP0357199B1 (fr) * 1988-08-08 1994-03-30 General Motors Corporation Capteur de position
DE69029153T2 (de) * 1989-01-18 1997-06-19 Nippon Denso Co Vorrichtung zur magnetischen Detektion und Vorrichtung zur Detektion einer physikalischen Grösse, die sie verwendet
US4935698A (en) * 1989-03-03 1990-06-19 Sprague Electric Company Sensor having dual Hall IC, pole piece and magnet
US5229715A (en) * 1989-04-03 1993-07-20 Sanken Airpax Ltd. Variable reluctance sensor for electromagnetically sensing the rate of movement of an object
JPH0726857B2 (ja) * 1989-04-03 1995-03-29 サンケン・エアパクス株式会社 移動物体の移動状態検出器
DE4020228A1 (de) * 1990-06-26 1992-01-02 Philips Patentverwaltung Anordnung zum detektieren eines bewegten ferromagnetischen elements
US5045920A (en) * 1990-06-28 1991-09-03 Allegro Microsystems, Inc. Dual-Hall ferrous-article-proximity sensor
DE4128808A1 (de) * 1991-08-30 1993-03-04 Schiffselektronik Rostock Gmbh Verfahren und anordnung zur beruehrungslosen, drehrichtungserkennenden drehzahlmessung an rotierenden ferromagnetischen teilen
DE4133837C2 (de) * 1991-10-12 1994-06-09 Kostal Leopold Gmbh & Co Kg Sensoreinrichtung
US5336998A (en) * 1992-06-22 1994-08-09 United States Pipe And Foundry Company Sensor for detecting faults in a magnetized ferrous object using hall effect elements
DE4237929A1 (de) * 1992-11-10 1994-05-11 Siemens Ag Näherungsschalter mit einem Magnetfeld-Sensor
DE4227831A1 (de) * 1992-07-09 1994-01-13 Siemens Ag Näherungsschalter mit einem Magnetfeld-Sensor
DE4334811A1 (de) * 1993-10-13 1995-04-20 Festo Kg Positionserfassungsvorrichtung an einem Linearantrieb
JP3514511B2 (ja) * 1993-05-27 2004-03-31 ハネウェル・インターナショナル・インコーポレーテッド 磁気センサー
DE4418294A1 (de) * 1994-05-26 1995-11-30 Vacuumschmelze Gmbh Magnetfeldinduzierter Impulsgeber, insbesondere zur Drehzahlerfassung einer sich in einem Gehäuse drehenden Welle
DE9415257U1 (de) * 1994-09-20 1994-11-17 Siemens Ag Näherungsschalter mit drei Schaltpositionen
US5497082A (en) * 1995-01-25 1996-03-05 Honeywell Inc. Quadrature detector with a hall effect element and a magnetoresistive element

Also Published As

Publication number Publication date
FR2735222A1 (fr) 1996-12-13
KR970004106A (ko) 1997-01-29
JPH0949740A (ja) 1997-02-18
JP3618466B2 (ja) 2005-02-09
US5781005A (en) 1998-07-14
DE19622561A1 (de) 1996-12-12
DE19622561B4 (de) 2006-10-05
KR100318230B1 (ko) 2002-04-22

Similar Documents

Publication Publication Date Title
FR2735222B1 (fr) Capteur a effet hall de proximite destine a detecter la presence et/ou le passage d'un objet ferromagnetique
FR2734913B1 (fr) Ensemble formant capteur a effet hall pour la detection de la proximite d'articles ferreux
DE69624746D1 (de) Positionssensor und Positionsfeststellungsmethode
IL117021A (en) Assay device and a method for detecting the presence of an analyte
GB9213089D0 (en) A sensor for detecting the passage of a person or an animal in a field of view
BR9200322A (pt) Sistema de deteccao magnetorresistiva e sensor magnetorresistivo
DE59607223D1 (de) Einrichtung zur drehzahlmessung oder drehrichtungserkennung eines drehmagnetfeldes
FR2690527B1 (fr) Capteur destine a detecter l'humidite du sol.
FR2670286B1 (fr) Capteur magnetique de position et de vitesse a sonde de hall.
EP0729574A4 (fr) Detection de fluides a l'aide de detecteurs a semi-conducteurs a isolateur metallique (mis)
DE69615086D1 (de) Sensor zum Erspüren eines Körpers
FR2715726B1 (fr) Capteur magnétique de position à sonde de Hall.
IL120244A0 (en) Method of and device for detecting the presence of a living being of a particular species in a space monitored by a doppler sensor
AU662532B2 (en) Single inductive sensor vehicle detection and speed measurement
GB9121367D0 (en) Hall sensor movement detection device
FR2670005B1 (fr) Capteur de detection de la rotation d'un disque de compteur.
GB2275112B (en) Sensor for detecting rotational movement
TW346897U (en) Sensor assembly having snesing part for providing increased level of detection accuracy
FR2746912B1 (fr) Capteur magnetique de position
FR2784753B1 (fr) Capteur d'acceleration et dispositif de detection d'acceleration
FR2689638B1 (fr) Capteur a courants de foucault.
AUPN681595A0 (en) Sensor for detection and/or discrimination of objects
GB9505002D0 (en) "A method of sensing the condition of a sample of food
FR2723235B1 (fr) Dispositifs de detection d'incendie comportant un capteur de correction
DE29520111U1 (de) Meßvorrichtung zur berührungslosen Erfassung einer Relativbewegung

Legal Events

Date Code Title Description
CD Change of name or company name

Owner name: ALLEGRO MICROSYSTEMS, LLC, US

Effective date: 20130821

CJ Change in legal form

Effective date: 20130821

PLFP Fee payment

Year of fee payment: 20