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WO2012055641A3 - Sensorvorrichtung, insbesondere metallsensor, mit feldkompensiertem magnetfeldsensor - Google Patents

Sensorvorrichtung, insbesondere metallsensor, mit feldkompensiertem magnetfeldsensor Download PDF

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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
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.)
Ceased
Application number
PCT/EP2011/066378
Other languages
English (en)
French (fr)
Other versions
WO2012055641A2 (de
Inventor
Reiner Krapf
Tobias Zibold
Andrej Albrecht
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to CN2011800520000A priority Critical patent/CN103154775A/zh
Priority to US13/881,659 priority patent/US20130300401A1/en
Priority to EP11761560.9A priority patent/EP2633340A2/de
Publication of WO2012055641A2 publication Critical patent/WO2012055641A2/de
Publication of WO2012055641A3 publication Critical patent/WO2012055641A3/de
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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

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  • 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.
PCT/EP2011/066378 2010-10-28 2011-09-21 Sensorvorrichtung, insbesondere metallsensor, mit feldkompensiertem magnetfeldsensor Ceased WO2012055641A2 (de)

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
DE102010043078A DE102010043078A1 (de) 2010-10-28 2010-10-28 Sensorvorrichtung, insbesondere Metallsensor, mit feldkompensiertem Magnetfeldsensor
DE102010043078.1 2010-10-28

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 Ceased 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)

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DE102010063546A1 (de) * 2010-12-20 2012-06-21 Robert Bosch Gmbh Leitungssucher
DE102011086773A1 (de) 2011-11-22 2013-05-23 Robert Bosch Gmbh Metallsensor
DE102011088394B4 (de) 2011-12-13 2024-11-28 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
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
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
EP3207392B1 (de) * 2014-10-17 2020-09-02 Koninklijke Philips N.V. Metalldetektor mit ortsauflösung
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
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
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
WO2017114109A1 (zh) * 2015-12-28 2017-07-06 深圳市澳亚迪电子设备有限公司 一种自平衡降噪金属探测双线圈
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
US10310028B2 (en) 2017-05-26 2019-06-04 Allegro Microsystems, Llc Coil actuated pressure sensor
US10641842B2 (en) 2017-05-26 2020-05-05 Allegro Microsystems, Llc Targets for coil actuated position sensors
US10837943B2 (en) 2017-05-26 2020-11-17 Allegro Microsystems, Llc Magnetic field sensor with error calculation
US10324141B2 (en) 2017-05-26 2019-06-18 Allegro Microsystems, Llc Packages for coil actuated position sensors
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
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系统及安检组件
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
KR102869730B1 (ko) * 2019-06-13 2025-10-14 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
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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
US20080074109A1 (en) * 2004-07-16 2008-03-27 Keiji Tsukada Magnetic Detecting Device and Material Identifying Device
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Also Published As

Publication number Publication date
EP2633340A2 (de) 2013-09-04
CN103154775A (zh) 2013-06-12
WO2012055641A2 (de) 2012-05-03
US20130300401A1 (en) 2013-11-14
DE102010043078A1 (de) 2012-05-03

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