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FR2775772B1 - PROXIMITY DETECTOR USING MAGNETORESISTANCES - Google Patents

PROXIMITY DETECTOR USING MAGNETORESISTANCES

Info

Publication number
FR2775772B1
FR2775772B1 FR9802780A FR9802780A FR2775772B1 FR 2775772 B1 FR2775772 B1 FR 2775772B1 FR 9802780 A FR9802780 A FR 9802780A FR 9802780 A FR9802780 A FR 9802780A FR 2775772 B1 FR2775772 B1 FR 2775772B1
Authority
FR
France
Prior art keywords
magnetoresistances
proximity detector
proximity
detector
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 - Fee Related
Application number
FR9802780A
Other languages
French (fr)
Other versions
FR2775772A1 (en
Inventor
Pierre Giroud
Denis Flandin
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.)
Crouzet Automatismes SAS
Original Assignee
Crouzet Automatismes SAS
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 Crouzet Automatismes SAS filed Critical Crouzet Automatismes SAS
Priority to FR9802780A priority Critical patent/FR2775772B1/en
Publication of FR2775772A1 publication Critical patent/FR2775772A1/en
Application granted granted Critical
Publication of FR2775772B1 publication Critical patent/FR2775772B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/023—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring distance between sensor and object
    • 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
    • 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
    • G01V3/081—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 the magnetic field is produced by the objects or geological structures

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Measuring Magnetic Variables (AREA)
FR9802780A 1998-03-06 1998-03-06 PROXIMITY DETECTOR USING MAGNETORESISTANCES Expired - Fee Related FR2775772B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9802780A FR2775772B1 (en) 1998-03-06 1998-03-06 PROXIMITY DETECTOR USING MAGNETORESISTANCES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9802780A FR2775772B1 (en) 1998-03-06 1998-03-06 PROXIMITY DETECTOR USING MAGNETORESISTANCES

Publications (2)

Publication Number Publication Date
FR2775772A1 FR2775772A1 (en) 1999-09-10
FR2775772B1 true FR2775772B1 (en) 2000-05-26

Family

ID=9523757

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9802780A Expired - Fee Related FR2775772B1 (en) 1998-03-06 1998-03-06 PROXIMITY DETECTOR USING MAGNETORESISTANCES

Country Status (1)

Country Link
FR (1) FR2775772B1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6278270B1 (en) * 1999-10-29 2001-08-21 Xerox Corporation Apparatus and method for detecting small distance changes between opposed surfaces using giant magneto resistance effect sensor
DE10003479A1 (en) * 2000-01-27 2001-08-16 Frick Karl Heinz Marking element and detection system for training guidance, control and warning systems
DE10030191C2 (en) * 2000-06-19 2002-10-31 Hahn Meitner Inst Berlin Gmbh Device and method for locating and determining the extent of invisible bodies made of ferromagnetic materials in a non-ferromagnetic environment
FR2830621B1 (en) 2001-10-09 2004-05-28 Commissariat Energie Atomique STRUCTURE FOR SENSOR AND MAGNETIC FIELD SENSOR
US20060038559A1 (en) * 2004-08-20 2006-02-23 Honeywell International, Inc. Magnetically biased eddy current sensor
DE102008008830A1 (en) * 2008-02-14 2009-08-27 Forschungszentrum Jülich GmbH Magnetic proximity sensor
DE102014205949A1 (en) * 2014-03-31 2015-10-01 Siemens Aktiengesellschaft Flow chamber for a flow cytometer and flow cytometer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0379180B1 (en) * 1989-01-18 1996-11-20 Nippondenso Co., Ltd. Magnetic detection device and physical quantity detection device using same
EP0578261A1 (en) * 1992-07-09 1994-01-12 Siemens Aktiengesellschaft Proximity switch with a magnetic field sensor
DE19505759C2 (en) * 1995-02-20 1997-02-13 Siemens Ag Switches with a Hall Difference IC for contactless position detection, especially in the automotive sector

Also Published As

Publication number Publication date
FR2775772A1 (en) 1999-09-10

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20111130