CA1040268A - Magnetic field sensing apparatus - Google Patents
Magnetic field sensing apparatusInfo
- Publication number
- CA1040268A CA1040268A CA232,238A CA232238A CA1040268A CA 1040268 A CA1040268 A CA 1040268A CA 232238 A CA232238 A CA 232238A CA 1040268 A CA1040268 A CA 1040268A
- Authority
- CA
- Canada
- Prior art keywords
- generator
- output signal
- magnet
- magnetoresistive element
- strips
- 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
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 55
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 23
- 239000002131 composite material Substances 0.000 claims description 11
- 239000011159 matrix material Substances 0.000 claims description 6
- 230000006870 function Effects 0.000 description 26
- 230000008859 change Effects 0.000 description 15
- 230000004907 flux Effects 0.000 description 14
- 239000000306 component Substances 0.000 description 7
- 230000000875 corresponding effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- 101150118300 cos gene Proteins 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052729 chemical element Inorganic materials 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003302 ferromagnetic material Substances 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 241000182988 Assa Species 0.000 description 1
- XUKUURHRXDUEBC-KAYWLYCHSA-N Atorvastatin Chemical compound C=1C=CC=CC=1C1=C(C=2C=CC(F)=CC=2)N(CC[C@@H](O)C[C@@H](O)CC(O)=O)C(C(C)C)=C1C(=O)NC1=CC=CC=C1 XUKUURHRXDUEBC-KAYWLYCHSA-N 0.000 description 1
- 241000518994 Conta Species 0.000 description 1
- 101100234408 Danio rerio kif7 gene Proteins 0.000 description 1
- 101100221620 Drosophila melanogaster cos gene Proteins 0.000 description 1
- 208000003251 Pruritus Diseases 0.000 description 1
- 101100398237 Xenopus tropicalis kif11 gene Proteins 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229940000425 combination drug Drugs 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000007803 itching Effects 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- AJCDFVKYMIUXCR-UHFFFAOYSA-N oxobarium;oxo(oxoferriooxy)iron Chemical compound [Ba]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O AJCDFVKYMIUXCR-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
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
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
- G06K7/082—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/9517—Proximity switches using a magnetic detector using galvanomagnetic devices
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Theoretical Computer Science (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Measuring Magnetic Variables (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1974089883U JPS576962Y2 (US06330241-20011211-M00004.png) | 1974-07-26 | 1974-07-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1040268A true CA1040268A (en) | 1978-10-10 |
Family
ID=13983153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA232,238A Expired CA1040268A (en) | 1974-07-26 | 1975-07-25 | Magnetic field sensing apparatus |
Country Status (8)
Families Citing this family (79)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4245261A (en) * | 1977-11-16 | 1981-01-13 | Allegheny Ludlum Steel Corporation | Digital displacement transducer and method for measurement |
| JPS54118259A (en) * | 1978-03-06 | 1979-09-13 | Nec Corp | Angle detector |
| US4296377A (en) * | 1978-03-27 | 1981-10-20 | Sony Corporation | Magnetic signal field sensor that is substantially immune to angular displacement relative to the signal field |
| FR2428875A1 (fr) * | 1978-06-16 | 1980-01-11 | Cii Honeywell Bull | Procede et appareil de lecture d'informations codees magnetiquement |
| JPS5559314A (en) | 1978-10-27 | 1980-05-02 | Sony Corp | Magnetic scale signal detector |
| US4255708A (en) * | 1978-12-15 | 1981-03-10 | International Business Machines Corporation | Magnetoresistive position transducer with invariable peak signal |
| GB2052855B (en) * | 1979-03-30 | 1983-05-18 | Sony Corp | Magnetoresistive transducers |
| GB2071333B (en) * | 1980-02-22 | 1984-02-01 | Sony Corp | Magnetic sensor device |
| IT1211140B (it) * | 1980-12-09 | 1989-09-29 | Sony Corp | Dispositivo commutatore a sensore magnetico. |
| JPS58154615A (ja) * | 1982-03-10 | 1983-09-14 | Copal Co Ltd | 磁気検出装置 |
| US4533872A (en) * | 1982-06-14 | 1985-08-06 | Honeywell Inc. | Magnetic field sensor element capable of measuring magnetic field components in two directions |
| DE3317594A1 (de) * | 1983-05-14 | 1984-11-15 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Magnetfeldsensor |
| DE3426784A1 (de) * | 1984-07-20 | 1986-01-30 | Bosch Gmbh Robert | Magnetoresistiver sensor zur abgabe von elektrischen signalen |
| JPH0650424B2 (ja) * | 1985-08-30 | 1994-06-29 | ダイセル化学工業株式会社 | 暗号システムおよびそれに用いるハ−ドロツク用デバイス |
| DE3788831T2 (de) * | 1986-07-29 | 1994-08-11 | Nippon Denso Co | Kontaktloses Potentiometer. |
| JPS6354018U (US06330241-20011211-M00004.png) * | 1986-09-02 | 1988-04-11 | ||
| US5019461A (en) * | 1986-12-08 | 1991-05-28 | Honeywell Inc. | Resistive overlayer for thin film devices |
| US4857418A (en) * | 1986-12-08 | 1989-08-15 | Honeywell Inc. | Resistive overlayer for magnetic films |
| US4754431A (en) * | 1987-01-28 | 1988-06-28 | Honeywell Inc. | Vialess shorting bars for magnetoresistive devices |
| US4897288A (en) * | 1987-01-28 | 1990-01-30 | Honeywell Inc. | Vialess shorting bars for magnetoresistive devices |
| GB2202635B (en) * | 1987-03-26 | 1991-10-30 | Devon County Council | Detection of magnetic fields |
| DE3711484A1 (de) * | 1987-04-04 | 1988-10-20 | Braun Ag | Betaetigungseinrichtung fuer ein elektrisches geraet |
| GB2218206A (en) * | 1988-05-06 | 1989-11-08 | Julian Marsden Carroll | Detection of wall ties and their condition |
| US4988850A (en) * | 1988-05-25 | 1991-01-29 | Murata Mfg. Co., Ltd. | Magnetoresistance element array |
| US4847584A (en) * | 1988-10-14 | 1989-07-11 | Honeywell Inc. | Magnetoresistive magnetic sensor |
| NL8900750A (nl) * | 1989-03-28 | 1990-10-16 | Philips Nv | Inrichting voor het meten van een relatieve verplaatsing. |
| US5038130A (en) * | 1990-11-06 | 1991-08-06 | Santa Barbara Research Center | System for sensing changes in a magnetic field |
| FR2691534B1 (fr) * | 1992-05-19 | 1994-08-26 | Moving Magnet Tech | Capteur de position à aimant permanent et sonde de hall. |
| DE4237929A1 (de) * | 1992-11-10 | 1994-05-11 | Siemens Ag | Näherungsschalter mit einem Magnetfeld-Sensor |
| EP0578261A1 (de) * | 1992-07-09 | 1994-01-12 | Siemens Aktiengesellschaft | Näherungsschalter mit einem Magnetfeld-Sensor |
| DE4227831A1 (de) * | 1992-07-09 | 1994-01-13 | Siemens Ag | Näherungsschalter mit einem Magnetfeld-Sensor |
| DE9301302U1 (de) * | 1993-01-30 | 1994-05-26 | Werner Turck Gmbh & Co Kg, 58553 Halver | Näherungsschalter |
| DE59304986D1 (de) * | 1993-04-10 | 1997-02-13 | Heidenhain Gmbh Dr Johannes | Magnetisches Messsystem |
| US5477143A (en) * | 1994-01-11 | 1995-12-19 | Honeywell Inc. | Sensor with magnetoresistors disposed on a plane which is parallel to and displaced from the magnetic axis of a permanent magnet |
| US5825593A (en) * | 1994-02-18 | 1998-10-20 | Seagate Technology, Inc. | Electric field modulated MR sensor |
| DE19506104A1 (de) * | 1994-03-25 | 1995-09-28 | Heidenhain Gmbh Dr Johannes | Magnetisches Meßsystem |
| US5552778A (en) * | 1994-11-23 | 1996-09-03 | International Business Machines Corporation | Multibit bimorph magnetic tags using acoustic or magnetic interrogation for identification of an object coupled thereto |
| US5488294A (en) * | 1995-01-18 | 1996-01-30 | Honeywell Inc. | Magnetic sensor with means for retaining a magnet at a precise calibrated position |
| US5500589A (en) * | 1995-01-18 | 1996-03-19 | Honeywell Inc. | Method for calibrating a sensor by moving a magnet while monitoring an output signal from a magnetically sensitive component |
| JP3096413B2 (ja) * | 1995-11-02 | 2000-10-10 | キヤノン電子株式会社 | 磁気検出素子、磁気センサー、地磁気検出型方位センサー、及び姿勢制御用センサー |
| US5812065A (en) | 1995-08-14 | 1998-09-22 | International Business Machines Corporation | Modulation of the resonant frequency of a circuit using an energy field |
| US7123129B1 (en) | 1995-08-14 | 2006-10-17 | Intermec Ip Corp. | Modulation of the resonant frequency of a circuit using an energy field |
| US7002475B2 (en) * | 1997-12-31 | 2006-02-21 | Intermec Ip Corp. | Combination radio frequency identification transponder (RFID tag) and magnetic electronic article surveillance (EAS) tag |
| FR2752302B1 (fr) * | 1996-08-08 | 1998-09-11 | Commissariat Energie Atomique | Capteur de champ magnetique a pont de magnetoresistances |
| JPH10160747A (ja) * | 1996-12-03 | 1998-06-19 | Oki Electric Ind Co Ltd | 衝撃センサ |
| JPH10239098A (ja) * | 1997-02-26 | 1998-09-11 | Mitsubishi Electric Corp | 磁気検出装置 |
| JP4007464B2 (ja) * | 1997-10-06 | 2007-11-14 | Ｔｄｋ株式会社 | 磁気探知装置 |
| ES2149728B1 (es) * | 1999-03-18 | 2001-06-01 | Univ Madrid Complutense | Dispositivo para la deteccion de la posicion de un piston neumatico. |
| JP3504532B2 (ja) * | 1999-04-21 | 2004-03-08 | Ｙｋｋ株式会社 | ブラシレスｄｃモータ |
| JP2002048506A (ja) * | 2000-08-04 | 2002-02-15 | Matsushita Electric Ind Co Ltd | 電磁アクチュエータ用位置センサ |
| US6310549B1 (en) | 2000-08-29 | 2001-10-30 | Digitech International | Wireless security system |
| WO2002052221A1 (fr) * | 2000-12-27 | 2002-07-04 | Kabushiki Kaisha Bridgestone | Capteur de deplacement |
| DE10104453A1 (de) * | 2001-02-01 | 2002-08-08 | Philips Corp Intellectual Pty | Anordnung zum Messen der magnetischen Feldstärke |
| DE10247590A1 (de) * | 2002-10-11 | 2004-04-22 | Siemens Ag | Magnetischer Positionssensor |
| WO2005083457A1 (ja) * | 2004-02-27 | 2005-09-09 | Murata Manufacturing Co., Ltd. | 長尺型磁気センサ |
| WO2006035371A1 (en) * | 2004-09-27 | 2006-04-06 | Koninklijke Philips Electronics N.V. | Sensor arrangement |
| EP2016539A4 (en) * | 2006-05-11 | 2010-06-09 | Singular Id Pte Ltd | OBJECT IDENTIFICATION METHOD, IDENTIFICATION LABEL, OBJECT ADAPTED TO BE IDENTIFIED, AND DEVICE AND SYSTEM RELATED THERETO |
| WO2008143347A1 (ja) * | 2007-05-24 | 2008-11-27 | Alps Electric Co., Ltd. | Ｇｍｒセンサ |
| DE102008008830A1 (de) * | 2008-02-14 | 2009-08-27 | Forschungszentrum Jülich GmbH | Magnetischer Näherungssensor |
| DE102008033579B4 (de) * | 2008-07-17 | 2015-03-12 | Meas Deutschland Gmbh | Messvorrichtung zum Messen magnetischer Eigenschaften |
| JP5691594B2 (ja) * | 2011-02-09 | 2015-04-01 | 富士ゼロックス株式会社 | 検知装置および処理システム |
| US20120229128A1 (en) * | 2011-03-10 | 2012-09-13 | Armin Satz | Magnetic Field Sensor |
| 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 |
| US10145908B2 (en) | 2013-07-19 | 2018-12-04 | Allegro Microsystems, Llc | Method and apparatus for magnetic sensor producing a changing magnetic field |
| WO2016031261A1 (ja) * | 2014-08-26 | 2016-03-03 | Tdk株式会社 | 磁気式位置検出装置 |
| 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 |
| US9823092B2 (en) | 2014-10-31 | 2017-11-21 | Allegro Microsystems, Llc | Magnetic field sensor providing a movement detector |
| 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 |
| US10466206B2 (en) * | 2016-12-12 | 2019-11-05 | Southwest Research Institute | Non destructive magnetostrictive testing with unidirectional guided waves generated by ferromagnetic strip sensor |
| US11237227B2 (en) * | 2017-04-25 | 2022-02-01 | Konica Minolta, Inc. | Magnetic sensor |
| JP6787260B2 (ja) * | 2017-06-14 | 2020-11-18 | 株式会社デンソー | ポジションセンサ |
| EP3707475B1 (de) * | 2017-11-09 | 2021-07-07 | Griessbach GmbH | Schalter mit magnetanordnung |
| US10866117B2 (en) | 2018-03-01 | 2020-12-15 | Allegro Microsystems, Llc | Magnetic field influence during rotation movement of magnetic target |
| US11255700B2 (en) | 2018-08-06 | 2022-02-22 | Allegro Microsystems, Llc | Magnetic field sensor |
| US10823586B2 (en) | 2018-12-26 | 2020-11-03 | Allegro Microsystems, Llc | Magnetic field sensor having unequally spaced magnetic field sensing elements |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3736419A (en) * | 1971-10-26 | 1973-05-29 | Ibm | Magnetoresistive sensing of bubble domains with noise suppression |
| JPS575067B2 (US06330241-20011211-M00004.png) * | 1973-07-13 | 1982-01-28 |
-
1974
- 1974-07-26 JP JP1974089883U patent/JPS576962Y2/ja not_active Expired
-
1975
- 1975-07-11 GB GB29336/75A patent/GB1495320A/en not_active Expired
- 1975-07-18 US US05/597,007 patent/US4079360A/en not_active Expired - Lifetime
- 1975-07-23 DE DE19752532981 patent/DE2532981B2/de not_active Ceased
- 1975-07-25 CA CA232,238A patent/CA1040268A/en not_active Expired
- 1975-07-25 FR FR7523375A patent/FR2296855A1/fr active Granted
- 1975-07-25 NL NLAANVRAGE7508926,A patent/NL188120C/xx not_active IP Right Cessation
- 1975-07-28 AT AT584875A patent/AT343209B/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NL188120B (nl) | 1991-11-01 |
| FR2296855A1 (fr) | 1976-07-30 |
| AT343209B (de) | 1978-05-10 |
| DE2532981B2 (de) | 1977-03-24 |
| GB1495320A (en) | 1977-12-14 |
| JPS576962Y2 (US06330241-20011211-M00004.png) | 1982-02-09 |
| NL7508926A (nl) | 1976-01-28 |
| ATA584875A (de) | 1977-09-15 |
| NL188120C (nl) | 1992-04-01 |
| US4079360A (en) | 1978-03-14 |
| DE2532981A1 (de) | 1976-02-05 |
| JPS5118146U (US06330241-20011211-M00004.png) | 1976-02-09 |
| FR2296855B1 (US06330241-20011211-M00004.png) | 1981-05-22 |
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