CA2232162A1 - Dispositif et procede permettant de determiner l'epaisseur de pellicule et le motif dans des cellules plaquees sur des cartes de debit a induction - Google Patents

Dispositif et procede permettant de determiner l'epaisseur de pellicule et le motif dans des cellules plaquees sur des cartes de debit a induction Download PDF

Info

Publication number
CA2232162A1
CA2232162A1 CA002232162A CA2232162A CA2232162A1 CA 2232162 A1 CA2232162 A1 CA 2232162A1 CA 002232162 A CA002232162 A CA 002232162A CA 2232162 A CA2232162 A CA 2232162A CA 2232162 A1 CA2232162 A1 CA 2232162A1
Authority
CA
Canada
Prior art keywords
film thickness
sensing
converter
pattern register
debit cards
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.)
Abandoned
Application number
CA002232162A
Other languages
English (en)
Inventor
Paulo Henrique De Oliveira Lopes
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.)
Fundacao CPqD Centro de Pesquisa e Desenvolvimento em Telecomunicacoe
Original Assignee
TELECOMMUNICACOES BRASILEIRAS S/A - TELEBRAS
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 TELECOMMUNICACOES BRASILEIRAS S/A - TELEBRAS filed Critical TELECOMMUNICACOES BRASILEIRAS S/A - TELEBRAS
Publication of CA2232162A1 publication Critical patent/CA2232162A1/fr
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • G06K7/086—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 passive circuit, e.g. resonant circuit transponders
    • 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
    • G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
    • G01B7/10—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using magnetic means, e.g. by measuring change of reluctance

Abstract

Dispositif permettant de déterminer l'épaisseur des motifs métalliques conducteurs plaqués sur des surfaces isolantes, comme par exemple des cellules de crédit dans des cartes téléphoniques à prépaiement, constitué d'une pluralité de modules capteurs en nombre égal à celui des cellules de crédit dans les cartes, chaque module étant constitué d'un oscillateur (30) dans lequel l'inductance est créée par une paire de bobines de détection colinéaires (24a, 24b) alignée avec la position centrée de la cellule de crédit correspondante (25), la sortie (26) de l'ensemble de détection étant reliée à l'entrée d'un convertisseur A/N (40) dont la sortie est reliée à un ordinateur (11, 21) muni d'une unité de mémoire. Les oscillateurs sont activés successivement, la tension de sortie étant convertie en une valeur numérique. Les paramètres de conversion sont réglés pour chaque module détecteur en fonction des coefficients stockés dans la mémoire, de façon à compenser les variations des composants, de la position de la bobine de détection, etc. La valeur numérique résultante est traitée par l'ordinateur suivant une courbe de transfert (53) spécifique à chaque module de détection, ce qui donne l'épaisseur de pellicule. Les coefficients et courbes de transfert sont précédemment déterminés pour chacune des positions dans l'ensemble de cellules au moyen d'un calibrage individuel, à partir de cartes de référence dont l'épaisseur de la pellicule métallique est connue.
CA002232162A 1995-09-18 1996-09-17 Dispositif et procede permettant de determiner l'epaisseur de pellicule et le motif dans des cellules plaquees sur des cartes de debit a induction Abandoned CA2232162A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR9504681A BR9504681A (pt) 1995-09-18 1995-09-18 Medição de espessura de camadas metálicas sobre lâminas isolantes
BR9504681-0 1995-09-18

Publications (1)

Publication Number Publication Date
CA2232162A1 true CA2232162A1 (fr) 1997-03-27

Family

ID=4062547

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002232162A Abandoned CA2232162A1 (fr) 1995-09-18 1996-09-17 Dispositif et procede permettant de determiner l'epaisseur de pellicule et le motif dans des cellules plaquees sur des cartes de debit a induction

Country Status (8)

Country Link
JP (1) JPH11512526A (fr)
KR (1) KR100467116B1 (fr)
CN (1) CN1121604C (fr)
BR (1) BR9504681A (fr)
CA (1) CA2232162A1 (fr)
CZ (1) CZ83698A3 (fr)
PL (1) PL326356A1 (fr)
WO (1) WO1997011332A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10014348B4 (de) * 2000-03-24 2009-03-12 Immobiliengesellschaft Helmut Fischer Gmbh & Co. Kg Vorrichtung zur zerstörungsfreien Messung der Dicke dünner Schichten

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL132754C (fr) * 1965-04-29
US4029945A (en) * 1975-08-27 1977-06-14 Stanley Electric Co., Ltd. Card and card reader apparatus therefor
CH601863A5 (fr) * 1976-04-28 1978-07-14 Sodeco Compteurs De Geneve
US4181958A (en) * 1978-04-21 1980-01-01 The Valeron Corporation Multiple probe gage system
US4678994A (en) * 1984-06-27 1987-07-07 Digital Products Corporation Methods and apparatus employing apparent resonant properties of thin conducting materials
BR8502667A (pt) * 1986-10-01 1987-01-06 Artacho Dalson Sistema eletronico de registro e leitura de dados
BR9304503C1 (pt) * 1993-11-09 2002-01-08 Fundacao Cpqd Ct De Pesquisa E Método de cobrança de créditos à prova de fraudes em cartões de débitos indutivos

Also Published As

Publication number Publication date
KR19990045767A (ko) 1999-06-25
CN1121604C (zh) 2003-09-17
CZ83698A3 (cs) 1998-12-16
JPH11512526A (ja) 1999-10-26
KR100467116B1 (ko) 2005-04-13
WO1997011332A1 (fr) 1997-03-27
BR9504681A (pt) 1997-10-07
PL326356A1 (en) 1998-09-14
CN1200171A (zh) 1998-11-25

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Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued