WO2008037752A3 - Verfahren zum betreiben eines magnetfeldsensors und zugehöriger magnetfeldsensor - Google Patents

Verfahren zum betreiben eines magnetfeldsensors und zugehöriger magnetfeldsensor Download PDF

Info

Publication number
WO2008037752A3
WO2008037752A3 PCT/EP2007/060234 EP2007060234W WO2008037752A3 WO 2008037752 A3 WO2008037752 A3 WO 2008037752A3 EP 2007060234 W EP2007060234 W EP 2007060234W WO 2008037752 A3 WO2008037752 A3 WO 2008037752A3
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic field
field sensor
operating
hysteresis
associated magnetic
Prior art date
Application number
PCT/EP2007/060234
Other languages
English (en)
French (fr)
Other versions
WO2008037752A2 (de
Inventor
Roland Weiss
Istvan Jedlicska
Gotthard Rieger
Original Assignee
Siemens Ag
Roland Weiss
Istvan Jedlicska
Gotthard Rieger
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 Siemens Ag, Roland Weiss, Istvan Jedlicska, Gotthard Rieger filed Critical Siemens Ag
Publication of WO2008037752A2 publication Critical patent/WO2008037752A2/de
Publication of WO2008037752A3 publication Critical patent/WO2008037752A3/de

Links

Classifications

    • 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
    • G01R33/093—Magnetoresistive devices using multilayer structures, e.g. giant magnetoresistance sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
    • 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
    • G01R15/205—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 using magneto-resistance devices, e.g. field plates

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

Beim Betreiben eines Magnetfeldsensors aus wenigstens einem magnetoresistiven Element muss berücksichtigt werden, dass eine hysteresebehaftete Kennlinie vorliegt. Gemäß der Erfindung wird die Hysterese durch Einprägen von Steuerpulsen mit erheblich höherem Wert als dem Messfeld derart beeinflusst, dass die Hysterese im Wesentlichen konstant ist und insofern bei der Auswertung berücksichtigt werden kann. Beim zugehörigen Magnetfeldsensor ist eine Stromschleife für das Einprägen der Messpulse vorhanden.
PCT/EP2007/060234 2006-09-29 2007-09-26 Verfahren zum betreiben eines magnetfeldsensors und zugehöriger magnetfeldsensor WO2008037752A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610046736 DE102006046736B4 (de) 2006-09-29 2006-09-29 Verfahren zum Betreiben eines Magnetfeldsensors und zugehöriger Magnetfeldsensor
DE102006046736.1 2006-09-29

Publications (2)

Publication Number Publication Date
WO2008037752A2 WO2008037752A2 (de) 2008-04-03
WO2008037752A3 true WO2008037752A3 (de) 2008-06-05

Family

ID=39154522

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/060234 WO2008037752A2 (de) 2006-09-29 2007-09-26 Verfahren zum betreiben eines magnetfeldsensors und zugehöriger magnetfeldsensor

Country Status (2)

Country Link
DE (1) DE102006046736B4 (de)
WO (1) WO2008037752A2 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7768083B2 (en) 2006-01-20 2010-08-03 Allegro Microsystems, Inc. Arrangements for an integrated sensor
DE102007052408A1 (de) 2007-10-31 2009-05-07 Siemens Ag Verfahren zum Betreiben eines Magnetfeldsensors und zugehörige Anordnung
US7816905B2 (en) 2008-06-02 2010-10-19 Allegro Microsystems, Inc. Arrangements for a current sensing circuit and integrated current sensor
US7973527B2 (en) 2008-07-31 2011-07-05 Allegro Microsystems, Inc. Electronic circuit configured to reset a magnetoresistance element
US8063634B2 (en) 2008-07-31 2011-11-22 Allegro Microsystems, Inc. Electronic circuit and method for resetting a magnetoresistance element
DE102011083007B4 (de) 2011-09-20 2022-12-01 Zf Friedrichshafen Ag Verfahren und Ansteuervorrichtung zum Ansteuern eines elektromagnetischen Aktuators
US9354284B2 (en) 2014-05-07 2016-05-31 Allegro Microsystems, Llc Magnetic field sensor configured to measure a magnetic field in a closed loop manner
US9322887B1 (en) 2014-12-01 2016-04-26 Allegro Microsystems, Llc Magnetic field sensor with magnetoresistance elements and conductive-trace magnetic source
US10935612B2 (en) 2018-08-20 2021-03-02 Allegro Microsystems, Llc Current sensor having multiple sensitivity ranges
US11567108B2 (en) 2021-03-31 2023-01-31 Allegro Microsystems, Llc Multi-gain channels for multi-range sensor
US11994541B2 (en) 2022-04-15 2024-05-28 Allegro Microsystems, Llc Current sensor assemblies for low currents

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2944490C2 (de) * 1979-11-03 1985-02-21 Siemens AG, 1000 Berlin und 8000 München Verfahren zur Beseitigung des Einflusses von Remanenz in Empfangssystemen und Vorrichtung zur Durchführung des Verfahrens
US5351005A (en) * 1992-12-31 1994-09-27 Honeywell Inc. Resetting closed-loop magnetoresistive magnetic sensor
DE4319146C2 (de) * 1993-06-09 1999-02-04 Inst Mikrostrukturtechnologie Magnetfeldsensor, aufgebaut aus einer Ummagnetisierungsleitung und einem oder mehreren magnetoresistiven Widerständen
US7112793B2 (en) * 2004-01-05 2006-09-26 Laser Technology, Inc. One-chip compass implemented using magnetoresistive (MR) sensor temperature compensation and magnetic cross-term reduction techniques
DE102004056384A1 (de) * 2004-07-01 2006-02-02 Sensitec Gmbh Verfahren zur Offseteliminierung aus Signalen magnetoresistiver Sensoren

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MAPPS D J ET AL: "Optimisation of material and structure for a switched-bias magnetoresistive sensor", SENSORS AND ACTUATORS A, ELSEVIER SEQUOIA S.A., LAUSANNE, CH, vol. 81, no. 1-3, April 2000 (2000-04-01), pages 60 - 63, XP004191252, ISSN: 0924-4247 *

Also Published As

Publication number Publication date
DE102006046736A1 (de) 2008-04-10
DE102006046736B4 (de) 2008-08-14
WO2008037752A2 (de) 2008-04-03

Similar Documents

Publication Publication Date Title
WO2008037752A3 (de) Verfahren zum betreiben eines magnetfeldsensors und zugehöriger magnetfeldsensor
WO2007127897A3 (en) Adaptive response time closed loop control algorithm
EP2716408A3 (de) Hall-Effekt-Moduswahlschalter für Elektrowerkzeug
UA104373C2 (ru) Способ и устройство для определения магнитного параметра в сердечнике
WO2008005118A3 (en) Computerized evaluation of process control device signature graphs
WO2008039878A3 (en) Magnetic sensing system and method
WO2008008681A3 (en) Passenger screening system and method
WO2008125951A3 (en) Integrated oil condition and level sensor
WO2008012309A3 (de) Stromerfassungsvorrichtung und verfahren zur stromerfassung
WO2008040659A3 (de) Verfahren zum betreiben eines magnetfeldsensors und zugehöriger magnetfeldsensor
WO2006124252A3 (en) Integrated magnetic flux concentrator
WO2007137693A3 (en) Sensor device and method of measuring a position of an object
WO2007089994A3 (en) Supply voltage control for a power amplifier
PL1797361T3 (pl) Zawór elektromagnetyczny ze zintegrowanym czujnikiem ciśnienia
WO2008071557A3 (de) Vorrichtung zur steuerung eines elektromagnetischen ventils
WO2010117666A3 (en) Methods and apparatus to limit a change of a drive value in an electro-pneumatic controller
WO2007131118A3 (en) Electronic toy with alterable features
WO2005103852A3 (de) VORRICHTUNG ZUR ÜBERWACHUNG UND STEUERUNG bzw. REGELUNG EINER MASCHINE
WO2008014757A8 (de) Kontaktloser schalter
WO2008060872A8 (en) Infant apparatus actuated by sucking
WO2007137192A3 (en) Apparatus and system for adjusting settings of a power system device using a magnetically coupled actuator
EP2375041A3 (de) System und Verfahren zur Steuerung einer Einspritzzeit eines Kraftstoffeinspritzers
WO2009041241A1 (ja) センサ閾値回路
WO2009025096A1 (ja) 磁気センサ回路
WO2007136528A3 (en) Diagnostics in process control and monitoring systems

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07820629

Country of ref document: EP

Kind code of ref document: A2