FR3074896B1 - Capteur magnetique avec structure aimantee pleine et a plusieurs poles d'aimantation alternes - Google Patents

Capteur magnetique avec structure aimantee pleine et a plusieurs poles d'aimantation alternes Download PDF

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Publication number
FR3074896B1
FR3074896B1 FR1761912A FR1761912A FR3074896B1 FR 3074896 B1 FR3074896 B1 FR 3074896B1 FR 1761912 A FR1761912 A FR 1761912A FR 1761912 A FR1761912 A FR 1761912A FR 3074896 B1 FR3074896 B1 FR 3074896B1
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FR
France
Prior art keywords
magnetized
magnetic
measuring cell
positive
zones
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.)
Active
Application number
FR1761912A
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English (en)
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FR3074896A1 (fr
Inventor
Mustafa Boudrissa
Denis Bouscaren
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.)
Continental Automotive GmbH
Continental Automotive France SAS
Original Assignee
Continental Automotive GmbH
Continental Automotive France 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.)
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Publication date
Application filed by Continental Automotive GmbH, Continental Automotive France SAS filed Critical Continental Automotive GmbH
Priority to FR1761912A priority Critical patent/FR3074896B1/fr
Publication of FR3074896A1 publication Critical patent/FR3074896A1/fr
Application granted granted Critical
Publication of FR3074896B1 publication Critical patent/FR3074896B1/fr
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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
    • 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
    • G01D5/20—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 by varying inductance, e.g. by a movable armature
    • G01D5/2006—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 by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils
    • G01D5/2013—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 by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils by a movable ferromagnetic element, e.g. a core

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

La présente invention a pour objet un capteur magnétique suivant un déplacement d'une cible ferromagnétique dans un véhicule automobile, le capteur comprenant une structure aimantée (4) et mesurant une valeur du champ magnétique de la structure aimantée (4) à l'aplomb d'au moins une cellule de mesure. La structure aimantée (4) est pleine et comprend une alternance de zones aimantées (41 à 44) présentant successivement des pôles positifs et négatifs parallèlement au plan de mesure, l'aimantation des zones aimantées (41 à 44) étant dirigée perpendiculairement au plan de mesure avec chaque pôle positif ou respectivement négatif adjacent à deux pôles négatifs ou respectivement positifs, un moment magnétique (M1) des zones aimantées (42, 43) dirigé en direction de ladite au moins une cellule de mesure étant plus élevée que le moment magnétique (M2) des zones aimantées (41, 44) dirigé en sens inverse de ladite au moins une cellule de mesure.
FR1761912A 2017-12-11 2017-12-11 Capteur magnetique avec structure aimantee pleine et a plusieurs poles d'aimantation alternes Active FR3074896B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1761912A FR3074896B1 (fr) 2017-12-11 2017-12-11 Capteur magnetique avec structure aimantee pleine et a plusieurs poles d'aimantation alternes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1761912A FR3074896B1 (fr) 2017-12-11 2017-12-11 Capteur magnetique avec structure aimantee pleine et a plusieurs poles d'aimantation alternes
FR1761912 2017-12-11

Publications (2)

Publication Number Publication Date
FR3074896A1 FR3074896A1 (fr) 2019-06-14
FR3074896B1 true FR3074896B1 (fr) 2021-04-23

Family

ID=61028018

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1761912A Active FR3074896B1 (fr) 2017-12-11 2017-12-11 Capteur magnetique avec structure aimantee pleine et a plusieurs poles d'aimantation alternes

Country Status (1)

Country Link
FR (1) FR3074896B1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5781005A (en) * 1995-06-07 1998-07-14 Allegro Microsystems, Inc. Hall-effect ferromagnetic-article-proximity sensor
DE102007009389A1 (de) * 2007-02-20 2008-08-21 Bizerba Gmbh & Co. Kg Kraftmessvorrichtung und Verfahren zur Signalauswertung
FR2937126B1 (fr) * 2008-10-10 2010-12-31 Continental Automotive France Dispositif de mesure par effet hall
US9719806B2 (en) * 2014-10-31 2017-08-01 Allegro Microsystems, Llc Magnetic field sensor for sensing a movement of a ferromagnetic target object

Also Published As

Publication number Publication date
FR3074896A1 (fr) 2019-06-14

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