ES2039563T3 - Dispositivo para detectar un medio magnetico. - Google Patents

Dispositivo para detectar un medio magnetico.

Info

Publication number
ES2039563T3
ES2039563T3 ES198888119015T ES88119015T ES2039563T3 ES 2039563 T3 ES2039563 T3 ES 2039563T3 ES 198888119015 T ES198888119015 T ES 198888119015T ES 88119015 T ES88119015 T ES 88119015T ES 2039563 T3 ES2039563 T3 ES 2039563T3
Authority
ES
Spain
Prior art keywords
carrier
magnetic
sensors
markings
interference fields
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 - Lifetime
Application number
ES198888119015T
Other languages
English (en)
Inventor
Claes Ingvert
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.)
Profor AB
Original Assignee
Profor AB
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 Profor AB filed Critical Profor AB
Application granted granted Critical
Publication of ES2039563T3 publication Critical patent/ES2039563T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/025—Compensating stray fields
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G06K7/082—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
    • G06K7/083—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors inductive
    • G06K7/084—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors inductive sensing magnetic material by relative movement detecting flux changes without altering its magnetised state

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

EL INVENTO SE REFIERE A UN METODO PARA LA SUPRESION DEL EFECTO DE CAMPOS DE FUERTE INTERFERENCIA MAGNETICA QUE PUEDE TENER LUGAR DURANTE LA DETECCION DE MARCAS MAGNETICAS (9) SITUADAS EN UNA TRAMA U OTRO PORTADOR (8), CUYOS CAMPOS MAGNETICOS SON PEQUEÑOS EN RELACION A LOS CAMPOS DE INTERFERENCIA. EL METODO SE BASA EN DOS SENSORES MAGNETICOS IGUALES (1,6) FIJADOS JUNTO AL PORTADOR (8) DE LAS MARCAS MAGNETICAS (9) QUE HAY QUE DETECTAR, PERO A DISTANCIA LIGERAMENTE DESIGUAL DE DICHO PORTADOR (8). ESTE ES CONDUCIDO MAS ALLA DE LOS SENSORES (1,6), CADA UNO DE LOS CUALES DETECTA LAS MARCAS (9) PERO CON SEÑALES DETECTORAS DE FUERZA DIFERENTE, PUESTO QUE ESTAN SITUADOS A DISTANCIAS DISTINTAS DEL PORTADOR (8). LOS CAMPOS DE INTERFERENCIA, POR OTRO LADO, SON TAN FUERTES Y SUS FUENTES TAN REMOTAS QUE LA SEÑAL DE DETECCION DE AMBOS SENSORES (1,6) ES LA MISMA. DICHOS SENSORES (1,6) ESTAN ACOPLADOS EN OPOSICION DE FASE, POR LO QUE LAS SEÑALES DE DETECCION DE LOS CAMPOS DE INTERFERENCIA SE ANULAN ENTRESI MIENTRAS QUE LAS SEÑALES DE DETECCION DE LAS MARCAS MAGNETICAS (9) SE RESTAN ENTRE SI, CON EL RESULTADO DE UNA SEÑAL RESIDUAL QUE PUEDE AMPLIFICARSE Y UTILIZARSE PARA EL CONTROL DE OPERACIONES DE TRABAJO SOBRE EL PORTADOR (8).
ES198888119015T 1987-11-26 1988-11-15 Dispositivo para detectar un medio magnetico. Expired - Lifetime ES2039563T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8704704A SE459700B (sv) 1987-11-26 1987-11-26 Saett att undertrycka verkan av magnetiska stoerfaelt vid detektering av paa en baerare anbringade magnetiska maerken eller markeringar

Publications (1)

Publication Number Publication Date
ES2039563T3 true ES2039563T3 (es) 1993-10-01

Family

ID=20370404

Family Applications (1)

Application Number Title Priority Date Filing Date
ES198888119015T Expired - Lifetime ES2039563T3 (es) 1987-11-26 1988-11-15 Dispositivo para detectar un medio magnetico.

Country Status (5)

Country Link
EP (1) EP0317879B1 (es)
AT (1) ATE87115T1 (es)
DE (1) DE3879397T2 (es)
ES (1) ES2039563T3 (es)
SE (1) SE459700B (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE524370C2 (sv) 2002-05-10 2004-08-03 Tetra Laval Holdings & Finance Förpackningslaminat, bigvals, samt ett skikt för användning till ett förpackningslaminat
US7064558B1 (en) * 2004-12-16 2006-06-20 Honeywell International Inc. Millivolt output circuit for use with programmable sensor compensation integrated circuits
SE529125C2 (sv) * 2005-03-02 2007-05-08 Tetra Laval Holdings & Finance Sätt och anordning för att bestämma läget hos ett förpackningsmaterial med magnetiska markeringar
RU2589675C2 (ru) * 2010-11-29 2016-07-10 Тетра Лаваль Холдингз Энд Файнэнс С.А. Упаковочный материал, содержащий намагничевыемые части

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7405727A (nl) * 1974-04-29 1975-10-31 Philips Nv Magnetoweerstandkop.
DE2615539C2 (de) * 1975-04-14 1986-01-16 N.V. Philips' Gloeilampenfabrieken, Eindhoven Magnetkopf mit magnetoresistivem Element
US4283774A (en) * 1979-06-13 1981-08-11 Burroughs Corporation On-chip method of balancing memory detectors and balanced detectors formed thereby
JPS58154615A (ja) * 1982-03-10 1983-09-14 Copal Co Ltd 磁気検出装置

Also Published As

Publication number Publication date
EP0317879A1 (en) 1989-05-31
EP0317879B1 (en) 1993-03-17
DE3879397T2 (de) 1993-06-24
ATE87115T1 (de) 1993-04-15
SE8704704D0 (sv) 1987-11-26
SE459700B (sv) 1989-07-24
DE3879397D1 (de) 1993-04-22
SE8704704L (sv) 1989-05-27

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