WO2012055641A3 - Sensorvorrichtung, insbesondere metallsensor, mit feldkompensiertem magnetfeldsensor - Google Patents
Sensorvorrichtung, insbesondere metallsensor, mit feldkompensiertem magnetfeldsensor Download PDFInfo
- Publication number
- WO2012055641A3 WO2012055641A3 PCT/EP2011/066378 EP2011066378W WO2012055641A3 WO 2012055641 A3 WO2012055641 A3 WO 2012055641A3 EP 2011066378 W EP2011066378 W EP 2011066378W WO 2012055641 A3 WO2012055641 A3 WO 2012055641A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sensor
- magnetic field
- coils
- field
- particular metal
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/0005—Geometrical arrangement of magnetic sensor elements; Apparatus combining different magnetic sensor types
-
- 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
- G01V3/10—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 using induction coils
- G01V3/104—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 using induction coils using several coupled or uncoupled coils
- G01V3/105—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 using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops
- G01V3/107—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 using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops using compensating coil or loop arrangements
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Geophysics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Geophysics And Detection Of Objects (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
Die Erfindung betrifft eine Sensorvorrichtung (10), insbesondere einen Metallsensor, mit zumindest zwei Spulen (12, 14) und einem Magnetfeldsensor (16), bei der die Anordnung von Spulen und Magnetsensor zueinander und/oder die Anzahl der Spulenwindungen und/oder der Wicklungssinn der Spulen und/oder der Spulenstrom derart gewählt ist/sind, dass das von den Spulen (12, 14) erzeugte Magnetfeld am Ort des Magnetfeldsensors (16) näherungsweise verschwindet. Des weiteren betrifft die Erfindung ein Verfahren zur Detektion von Objekten, insbesondere ein Verfahren zum Auffinden metallischer Objekte, unter Verwendung zumindest zweier Spulen und eines Magnetfeldsensors, insbesondere eines AMR-, GMR- oder Hall-Sensors, bei dem die Anordnung der Spulen und des Magnetsensors zueinander und/oder die Anzahl der Spulenwindungen und/oder der Wicklungssinn der Spulen und/oder der Spulenstrom derart gewählt ist/sind, dass das von den Spulen erzeugte Magnetfeld am Ort des Magnetfeldsensors näherungsweise verschwindet.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011800520000A CN103154775A (zh) | 2010-10-28 | 2011-09-21 | 具有场补偿的磁场传感器的传感器装置、尤其是金属传感器 |
US13/881,659 US20130300401A1 (en) | 2010-10-28 | 2011-09-21 | Sensor Apparatus, in Particular Metal Sensor, with a Field-Compensated Magnetic Field Sensor |
EP11761560.9A EP2633340A2 (de) | 2010-10-28 | 2011-09-21 | Sensorvorrichtung, insbesondere metallsensor, mit feldkompensiertem magnetfeldsensor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010043078.1 | 2010-10-28 | ||
DE102010043078A DE102010043078A1 (de) | 2010-10-28 | 2010-10-28 | Sensorvorrichtung, insbesondere Metallsensor, mit feldkompensiertem Magnetfeldsensor |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2012055641A2 WO2012055641A2 (de) | 2012-05-03 |
WO2012055641A3 true WO2012055641A3 (de) | 2012-10-18 |
Family
ID=44719898
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2011/066378 WO2012055641A2 (de) | 2010-10-28 | 2011-09-21 | Sensorvorrichtung, insbesondere metallsensor, mit feldkompensiertem magnetfeldsensor |
Country Status (5)
Country | Link |
---|---|
US (1) | US20130300401A1 (de) |
EP (1) | EP2633340A2 (de) |
CN (1) | CN103154775A (de) |
DE (1) | DE102010043078A1 (de) |
WO (1) | WO2012055641A2 (de) |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010133501A1 (de) * | 2009-05-18 | 2010-11-25 | Sick Ag | Sensor zum detektieren metallischer objekte |
DE102010063546A1 (de) * | 2010-12-20 | 2012-06-21 | Robert Bosch Gmbh | Leitungssucher |
DE102011086773A1 (de) | 2011-11-22 | 2013-05-23 | Robert Bosch Gmbh | Metallsensor |
DE102011088394A1 (de) | 2011-12-13 | 2013-06-13 | Robert Bosch Gmbh | Metallsensor |
DE102011088406A1 (de) | 2011-12-13 | 2013-06-13 | Robert Bosch Gmbh | Metallsensor |
US9817078B2 (en) | 2012-05-10 | 2017-11-14 | Allegro Microsystems Llc | Methods and apparatus for magnetic sensor having integrated coil |
DE102012019329A1 (de) * | 2012-10-02 | 2014-04-03 | Gerd Reime | Verfahren und Sensoreinheit zur Ortung und/oder Erkennung metallischer oder Metall enthaltender Objekte und Materalien |
US9664494B2 (en) | 2013-05-10 | 2017-05-30 | Allegro Microsystems, Llc | Magnetic field sensor with immunity to external magnetic influences |
US10145908B2 (en) | 2013-07-19 | 2018-12-04 | Allegro Microsystems, Llc | Method and apparatus for magnetic sensor producing a changing magnetic field |
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 |
KR102030189B1 (ko) * | 2013-07-29 | 2019-11-11 | 매그나칩 반도체 유한회사 | 웨이퍼 상의 자기 센서 테스트 장치 및 방법 |
US9927498B2 (en) | 2014-06-06 | 2018-03-27 | Infineon Technologies Ag | Magnetic sensor device comprising a ring-shaped magnet and a sensor chip in a common package |
US10788548B2 (en) * | 2014-10-17 | 2020-09-29 | Koninklijke Philips N.V. | Spatially resolved metal detector |
US9823092B2 (en) | 2014-10-31 | 2017-11-21 | Allegro Microsystems, Llc | Magnetic field sensor providing a movement detector |
CN104390893A (zh) * | 2014-11-24 | 2015-03-04 | 电子科技大学 | 一种基于印制线圈的油磨粒传感器 |
CN105182428B (zh) * | 2015-07-29 | 2019-01-01 | 金华马卡科技有限公司 | 一种传感器、用于分析传感器的测量信号的方法以及检测物体的方法 |
CN105182427B (zh) * | 2015-07-29 | 2018-12-18 | 金华马卡科技有限公司 | 一种金属传感器 |
US10677952B2 (en) * | 2015-12-28 | 2020-06-09 | Shenzhen Aoyadi Electronic Equipment Co., Ltd. | Self-balance noise reduction metal detection double-coil |
DE102016110187B4 (de) | 2016-06-02 | 2017-12-14 | Westsächsische Hochschule Zwickau | Messvorrichtung und Messverfahren zur Strommessung |
US10012518B2 (en) | 2016-06-08 | 2018-07-03 | Allegro Microsystems, Llc | Magnetic field sensor for sensing a proximity of an object |
DE102016112524B4 (de) * | 2016-07-07 | 2020-08-06 | Heinrich Hirdes Gmbh | Verfahren und System zum elektro-magnetischen Auffinden und zur Untersuchung einer Fläche auf metallische Störkörper |
US11428755B2 (en) | 2017-05-26 | 2022-08-30 | Allegro Microsystems, Llc | Coil actuated sensor with sensitivity detection |
US10837943B2 (en) | 2017-05-26 | 2020-11-17 | Allegro Microsystems, Llc | Magnetic field sensor with error calculation |
US10310028B2 (en) | 2017-05-26 | 2019-06-04 | Allegro Microsystems, Llc | Coil actuated pressure sensor |
US10996289B2 (en) | 2017-05-26 | 2021-05-04 | Allegro Microsystems, Llc | Coil actuated position sensor with reflected magnetic field |
US10324141B2 (en) | 2017-05-26 | 2019-06-18 | Allegro Microsystems, Llc | Packages for coil actuated position sensors |
US10641842B2 (en) | 2017-05-26 | 2020-05-05 | Allegro Microsystems, Llc | Targets for coil actuated position sensors |
CN109212614A (zh) * | 2017-06-30 | 2019-01-15 | 北京至感传感器技术研究院有限公司 | 适用于开阔地的隐形安检***及安检组件 |
DE102018111011A1 (de) * | 2018-05-08 | 2019-11-14 | Infineon Technologies Ag | Magnetfeldsensorvorrichtung |
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 |
KR20200142877A (ko) * | 2019-06-13 | 2020-12-23 | 엘지이노텍 주식회사 | 카메라 장치 |
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 |
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 |
Citations (4)
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US5557206A (en) * | 1995-02-23 | 1996-09-17 | Geophex Ltd. | Apparatus and method for detecting a weak induced magnetic field by means of two concentric transmitter loops |
US20080054892A1 (en) * | 2004-09-29 | 2008-03-06 | Robert Bosch Gmbh | Detector for Locating Metallic Objects |
US20080074109A1 (en) * | 2004-07-16 | 2008-03-27 | Keiji Tsukada | Magnetic Detecting Device and Material Identifying Device |
WO2011138150A2 (de) * | 2010-05-07 | 2011-11-10 | Robert Bosch Gmbh | Erfassung eines metallischen oder magnetischen objekts |
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US4266190A (en) * | 1978-12-18 | 1981-05-05 | United Technologies Corporation | Dual core magnetic amplifier sensor |
US4486712A (en) * | 1981-09-25 | 1984-12-04 | Weber Harold J | Frequency dependent pulsed gain modulated metallic object detector |
US4623877A (en) * | 1983-06-30 | 1986-11-18 | Knogo Corporation | Method and apparatus for detection of targets in an interrogation zone |
US5414356A (en) * | 1987-09-21 | 1995-05-09 | Hitachi, Ltd. | Fluxmeter including squid and pickup coil with flux guiding core and method for sensing degree of deterioration of an object |
DE4141264C1 (en) * | 1991-12-14 | 1993-03-18 | Werner Turck Gmbh & Co Kg, 5884 Halver, De | Inductive proximity sensor - has oscillator in bridge circuit in branch of current source and continuously restores bridge balance |
DE102004011285A1 (de) | 2004-03-09 | 2005-09-29 | Robert Bosch Gmbh | Ortungsgerät |
DE102004047188B4 (de) * | 2004-09-29 | 2022-10-27 | Robert Bosch Gmbh | Vorrichtung zur Ortung metallischer Objekte |
DE102004047189A1 (de) * | 2004-09-29 | 2006-04-06 | Robert Bosch Gmbh | Sensor zur Ortung metallischer Objekte sowie Verfahren zur Auswertung von Messsignalen eines solchen Sensors |
DE102005007803A1 (de) * | 2005-02-21 | 2006-08-24 | Robert Bosch Gmbh | Verfahren zur Detektion von in einem Medium eingeschlossenen Objekten sowie Messgerät zur Durchführung des Verfahrens |
PL1910773T3 (pl) * | 2005-07-29 | 2013-08-30 | Gerd Reime | Sposób i urządzenie do pomiaru odległości za pomocą czujników pojemnościowych lub indukcyjnych |
EP1991862B1 (de) * | 2006-02-24 | 2013-07-10 | Commissariat à l'Énergie Atomique et aux Énergies Alternatives | Verfahren und vorrichtung zur nichtdestruktiven bewertung von defekten in einem metallischen gegenstand |
-
2010
- 2010-10-28 DE DE102010043078A patent/DE102010043078A1/de not_active Withdrawn
-
2011
- 2011-09-21 WO PCT/EP2011/066378 patent/WO2012055641A2/de active Application Filing
- 2011-09-21 US US13/881,659 patent/US20130300401A1/en not_active Abandoned
- 2011-09-21 EP EP11761560.9A patent/EP2633340A2/de not_active Withdrawn
- 2011-09-21 CN CN2011800520000A patent/CN103154775A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5557206A (en) * | 1995-02-23 | 1996-09-17 | Geophex Ltd. | Apparatus and method for detecting a weak induced magnetic field by means of two concentric transmitter loops |
US20080074109A1 (en) * | 2004-07-16 | 2008-03-27 | Keiji Tsukada | Magnetic Detecting Device and Material Identifying Device |
US20080054892A1 (en) * | 2004-09-29 | 2008-03-06 | Robert Bosch Gmbh | Detector for Locating Metallic Objects |
WO2011138150A2 (de) * | 2010-05-07 | 2011-11-10 | Robert Bosch Gmbh | Erfassung eines metallischen oder magnetischen objekts |
Also Published As
Publication number | Publication date |
---|---|
DE102010043078A1 (de) | 2012-05-03 |
EP2633340A2 (de) | 2013-09-04 |
CN103154775A (zh) | 2013-06-12 |
WO2012055641A2 (de) | 2012-05-03 |
US20130300401A1 (en) | 2013-11-14 |
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