EP1224640B1 - Element de securite antivol pour la securite antivol electronique d'articles - Google Patents

Element de securite antivol pour la securite antivol electronique d'articles Download PDF

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Publication number
EP1224640B1
EP1224640B1 EP00969337A EP00969337A EP1224640B1 EP 1224640 B1 EP1224640 B1 EP 1224640B1 EP 00969337 A EP00969337 A EP 00969337A EP 00969337 A EP00969337 A EP 00969337A EP 1224640 B1 EP1224640 B1 EP 1224640B1
Authority
EP
European Patent Office
Prior art keywords
security element
contact zone
dielectric layer
securing
conducting track
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
EP00969337A
Other languages
German (de)
English (en)
Other versions
EP1224640A1 (fr
Inventor
Richard Altwasser
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.)
Meto International GmbH
Original Assignee
Checkpoint Systems International GmbH
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 Checkpoint Systems International GmbH filed Critical Checkpoint Systems International GmbH
Publication of EP1224640A1 publication Critical patent/EP1224640A1/fr
Application granted granted Critical
Publication of EP1224640B1 publication Critical patent/EP1224640B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
    • G08B13/2414—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using inductive tags
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2428—Tag details
    • G08B13/2431—Tag circuit details

Definitions

  • the invention relates to a fuse element for electronic Article surveillance.
  • a corresponding securing element consisting of a lower conductor track and an upper conductor track, the conductor tracks having a contact zone and then each having a turn with a different sense of rotation and the conductor tracks being arranged one above the other and in the area of the contact zone an electrical connection between the lower conductor track and the upper one Conductor exists, has become known, for example, from DE 197 08 180 A1, in which case the entire securing element has at least one turn with an included angle of rotation of 2 ⁇ .
  • Such fuse elements are referred to as resonant resonant circuits or as radio frequency (RF) fuse elements, the resonant frequency being determined by the capacitance C , the inductance L and the resistance R of the resonant circuit.
  • Radio frequency security elements come in the form of labels or followers in the prevention and detection of Thefts used in department stores and warehouses and delight popularity due to the high detection rate.
  • the article security itself can be summarized as follows describe:
  • the radio frequency fuse elements are in the surveillance zone of the area to be secured - Usually this is the input and output area of the Department store or warehouse - through an alternating magnetic field for sending a characteristic detection signal stimulated. Once the surveillance system this Detection signal registered, an alarm is triggered. For visitors to a department store or warehouse can see two Pillars of the surveillance system between which everyone wants to leave the department store or warehouse, must go through.
  • One way to increase the detection rate is to increase the size of the fuse element.
  • the disadvantage of this solution is that the costs for the securing element increase and, moreover, goods with small external dimensions can be provided with such large securing elements only with difficulty.
  • Another disadvantage of the known RF fuse elements is that the resonance frequency of the fuse elements is detuned by an electrically conductive mass located in the vicinity of the fuse element; ie can be changed. A knowledgeable thief can take advantage of this effect and drastically reduce the deceiving rate by holding the security element in his hand.
  • there are difficulties in detecting security elements of the type described which are attached to products with a high water content, with sufficient certainty. Such products with high water content are e.g. B. meat, fish or beverage bottles.
  • the invention is therefore based on the object To provide fuse element, the same Dimensions like the known fuse elements a better one Has detection rate.
  • a Securing element for electronic article surveillance consisting of a lower conductor track and an upper one Conductor track, the conductor tracks being a contact zone and attached to it one turn each with a different turn Have sense of rotation, wherein the conductor tracks are arranged one above the other are electrical and in the area of the contact zone Connection between the lower trace and the upper trace exists and the one enclosed by both turns Angle of rotation is less than 2 ⁇ .
  • the effective volume V eff [m 3 ] is an important parameter for assessing the performance of an RF security element.
  • the effective volume V eff is defined as the quotient of the magnetic moment which is emitted by the securing element and the field strength H of the magnetic field in which the securing element is located.
  • the increase in the effective volume V eff reduces the sensitivity of the monitoring system to interference, it allows the columns to be spaced further apart, or it increases the detection rate of the monitoring system under otherwise identical conditions.
  • the inventive design of the security element increases the effective volume V eff by approximately 20% compared to known RF security elements.
  • the configuration of the dielectric is particularly advantageous Layer as an adhesive layer, dielectric film, in particular made of PET, and / or dielectric lacquer layer, because of simple and effectively prevents the electrical connection becomes.
  • An embodiment of the invention provides that the thickness of the dielectric layer is less than or equal to 2 ⁇ m, so that the capacity of that formed by the circuit boards Resonant circuit is increased and also the ability to influence the resonance frequency by near the fuse element located electrically conductive masses greatly reduced becomes.
  • Fig. 1 shows a plan view of a lower conductor track 1.
  • Die lower conductor track 1 is made of an aluminum foil of approximately 38 punched out to thickness.
  • the lower conductor track 1 has one Contact zone 2, within which an electrical contact between the lower conductor track 1 and one in FIG. 1 not shown upper trace exists.
  • the lower conductor track 1 wound counterclockwise.
  • the one from the turn 2 included rotation angle a is less than 2 ⁇ .
  • Fig. 2 shows a plan view of an upper conductor track 5.
  • Die upper conductor track 5 is also made of an aluminum foil punched out and has the same dimensions as the lower one Conductor 1.
  • the one also present on the upper conductor 5 Contact zone 2 is in the assembled state of the Fuse element an electrical connection between lower circuit board 1 and upper circuit board 5 ago.
  • the upper conductor track 5 is wound clockwise, also here the angle of rotation b enclosed by the turn 2 is less than 2 ⁇ .
  • the Angle of rotation a and b enclosed by both less than 2 ⁇ each, because of the full turn of 2 ⁇ in each case at least one gap 4 is to be deducted.
  • the thickness of the lower interconnect 1 and the upper interconnect 5 can go up or down from the above 38 ⁇ m differ.
  • the production of conductor tracks 1 and 5 can be based on other ways than by punching out. The punching out is inexpensive because the two conductor tracks 1 and 5 are relative are broad and simple. Between the ends of the Windings 3 and the contact zones 2, the gap 4 is present. Then the entire lower conductor track 1 with a dielectric layer coated. This layer is in the Area of contact zone 2 removed again or weakened.
  • FIG. 3 is an embodiment of an inventive Fuse element shown, which results from the lower and the upper conductor tracks 1 and 5.
  • the contact zone 2 In the area the contact zone 2 is an electrical contact between two conductor tracks 1 and 5. Otherwise prevents one between lower trace 1 and upper trace 5 arranged dielectric layer, not shown in Fig. 3 the electrical contact between the conductor tracks 1 and 5.
  • the conductor tracks 1 and 5 and the dielectric layer are arranged on a carrier plate 7, which outer dimensions of typically 40 mm x 40 mm and for which required mechanical stability of the securing element provides.
  • the capacitance C of the fuse element must be increased accordingly. This is done by reducing the thickness of the dielectric layer between lower interconnect 1 and upper interconnect 5.
  • the thickness of this layer in a fuse element according to the invention is approximately 2 ⁇ m or less, instead of 3 ⁇ m to 4 ⁇ m in fuse elements according to the prior art.
  • Etched RF security elements according to the prior art even have layer thicknesses of 30 ⁇ m to 50 ⁇ m.
  • the effective volume V eff is approximately 1.2 L to 1.3 L. In the case of the fuse elements according to the invention, the effective volume V eff is approximately 1 for the same area. 5 L to 1.6 L.
  • the increase in the capacitance C also leads to a greater insensitivity of the securing element to detuning, that is to say a change in the resonance frequency.
  • Detuning occurs whenever the fuse element is brought into close proximity to a large electrically conductive mass. High dielectric losses occur between this electrically conductive mass and the conductor tracks 1 and 5, which change the resonance frequency of the fuse element and reduce its Q factor. As a result, the effective volume V eff of the securing element also decreases.
  • the above-mentioned electrically conductive compound can be the hand or the body of a department store thief, the above-mentioned products or the like with high water content. his.
  • the Q factor by the proximity of a hand of values between 50 and 80 decrease to values between 10 and 30.
  • the resonance frequency can shift by 10% to 20%.
  • the Q factor drops due to the proximity of one hand only by about 10% the resonance frequency only shifts by about 1%.
  • the detection rate of the security element according to the invention is by hand or another electrically conductive Mass not significantly influenced. Even if that securing element according to the invention enclosed by two hands the detection rate remains almost unchanged high.

Claims (7)

  1. Elément de sécurité antivol pour la sécurité antivol électronique d'articles se composant d'une piste conductrice inférieure (1) et d'une piste conductrice supérieure (5), les pistes conductrices (1, 5) comprenant une zone de contact (2) et respectivement une spire (3) à sens de rotation différent s'y rattachant d'un côté, les pistes conductrices (1, 5) étant, dans le secteur de la zone de contact (2), disposées l'une sur l'autre avec une liaison électrique entre la piste conductrice inférieure (1) et la piste conductrice supérieure (5) et l'angle de rotation (a, b) inscrit par les deux spires (3) étant respectivement inférieur à 2 π.
  2. Elément de sécurité antivol selon la revendication 1, caractérisé en ce qu'à l'exception de la zone de contact (2) une couche diélectrique est disposée entre la piste conductrice inférieure (1) et la piste conductrice supérieure (5).
  3. Elément de sécurité antivol selon la revendication 2, caractérisé en ce que la couche diélectrique est une couche de colle.
  4. Elément de sécurité antivol selon la revendication 2, caractérisé en ce que la couche diélectrique est une feuille diélectrique, en particulier en PET.
  5. Elément de sécurité antivol selon la revendication 2, caractérisé en ce que la couche diélectrique est une couche diélectrique de laque.
  6. Elément de sécurité antivol selon l'une des revendications 2 à 5, caractérisé en ce que l'épaisseur de la couche diélectrique est inférieure ou égale à 2 µm.
  7. Élément de sécurité antivol selon l'une quelconque des revendications précédentes, caractérisé en ce que dans le secteur de la zone de contact (2) les pistes conductrices (1, 5) sont reliées électriquement par perforation au poinçon.
EP00969337A 1999-10-27 2000-09-28 Element de securite antivol pour la securite antivol electronique d'articles Expired - Lifetime EP1224640B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19951561 1999-10-27
DE19951561A DE19951561A1 (de) 1999-10-27 1999-10-27 Sicherungselement für die elektronischen Artikelsicherung
PCT/EP2000/009522 WO2001031601A1 (fr) 1999-10-27 2000-09-28 Element de securite antivol pour la securite antivol electronique d'articles

Publications (2)

Publication Number Publication Date
EP1224640A1 EP1224640A1 (fr) 2002-07-24
EP1224640B1 true EP1224640B1 (fr) 2003-08-06

Family

ID=7926929

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00969337A Expired - Lifetime EP1224640B1 (fr) 1999-10-27 2000-09-28 Element de securite antivol pour la securite antivol electronique d'articles

Country Status (11)

Country Link
US (1) US6987453B1 (fr)
EP (1) EP1224640B1 (fr)
JP (1) JP4625221B2 (fr)
AT (1) ATE246831T1 (fr)
AU (1) AU777178B2 (fr)
DE (2) DE19951561A1 (fr)
DK (1) DK1224640T3 (fr)
ES (1) ES2203521T3 (fr)
NO (1) NO20021911L (fr)
NZ (1) NZ517425A (fr)
WO (1) WO2001031601A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7355516B2 (en) 2004-12-23 2008-04-08 Checkpoint Systems, Inc. Method and apparatus for protecting culinary products
US7663489B2 (en) * 2006-04-28 2010-02-16 Checkpoint Systems, Inc. Alarm systems, wireless alarm devices, and article security methods
WO2010066955A1 (fr) 2008-12-11 2010-06-17 Yves Eray Circuit d'antenne rfid
US8586871B2 (en) * 2011-07-19 2013-11-19 The Charles Stark Draper Laboratory, Inc. Interconnect schemes, and materials and methods for producing the same
DE102017207871A1 (de) 2017-05-10 2018-11-15 Tridonic Gmbh & Co Kg Firmware-Update-Over-The Air (FOTA) in der Gebäudetechnik

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4397924A (en) 1981-06-15 1983-08-09 Duracell Inc. High temperature solid state storage cell
US5291180A (en) * 1981-10-30 1994-03-01 Reeb Max E LC structure useful in radio frequency security systems
DE3143208C2 (de) * 1981-10-30 1984-07-05 Max-E. Dipl.-Ing. 7320 Göppingen Reeb Identifizierungsanordnung in Form eines an einem Gegenstand anbringbaren etikettartigen Streifens und Verfahren zu deren Herstellung
DE3221500A1 (de) * 1982-06-07 1983-12-08 Max-E. Dipl.-Ing. 7320 Göppingen Reeb Identifizierungsanordnung in form eines an einem gegenstand anbringbaren gebildes und verfahren zur herstellung
ZA889254B (en) * 1987-12-10 1990-08-29 Uniscan Ltd Powering and communication apparatus and method(s)
NL9202067A (nl) * 1992-11-27 1994-06-16 Dutch A & A Trading Bv Detectielabel.
ATE440480T1 (de) * 1993-12-30 2009-09-15 Miyake Kk Verbundfolie mit schaltungsfírmiger metallfolie oder dergleichen und verfahren zur herstellung
US5838253A (en) * 1995-05-17 1998-11-17 Accu-Sort Systems, Inc. Radio frequency identification label
US5574431A (en) * 1995-08-29 1996-11-12 Checkpoint Systems, Inc. Deactivateable security tag
DE19753619A1 (de) * 1997-10-29 1999-05-06 Meto International Gmbh Identifizierungselement und Verfahren zu seiner Herstellung
WO1998020371A1 (fr) 1996-11-04 1998-05-14 Meto International Gmbh Elements de securite pour la surveillance electronique d'articles
DE19708180A1 (de) * 1996-11-04 1998-05-07 Esselte Meto Int Gmbh Sicherungselement für die elektronische Artikelüberwachung
US6025725A (en) * 1996-12-05 2000-02-15 Massachusetts Institute Of Technology Electrically active resonant structures for wireless monitoring and control
DE19719434A1 (de) * 1997-05-12 1998-11-19 Meto International Gmbh Universelles Sicherungselement und Verfahren zu seiner Herstellung
WO1999008245A1 (fr) * 1997-08-08 1999-02-18 Ird A/S Etiquettes polymeres resonnant sous l'effet de la frequence radioelectrique et procede de fabrication
FR2771233B1 (fr) * 1997-11-18 2000-01-28 Sgs Thomson Microelectronics Bobine d'antenne a champ electrique reduit
US6147655A (en) * 1998-11-05 2000-11-14 Single Chip Systems Corporation Flat loop antenna in a single plane for use in radio frequency identification tags
US6384727B1 (en) * 2000-08-02 2002-05-07 Motorola, Inc. Capacitively powered radio frequency identification device
US6373387B1 (en) * 2000-08-08 2002-04-16 Honeywell International Inc. Integrated hybrid electronic article surveillance marker

Also Published As

Publication number Publication date
ATE246831T1 (de) 2003-08-15
EP1224640A1 (fr) 2002-07-24
NO20021911D0 (no) 2002-04-23
NZ517425A (en) 2003-01-31
ES2203521T3 (es) 2004-04-16
US20060007004A1 (en) 2006-01-12
NO20021911L (no) 2002-05-14
AU777178B2 (en) 2004-10-07
DE19951561A1 (de) 2001-05-03
AU7909500A (en) 2001-05-08
JP2003513381A (ja) 2003-04-08
DE50003223D1 (de) 2003-09-11
US6987453B1 (en) 2006-01-17
DK1224640T3 (da) 2003-11-24
WO2001031601A1 (fr) 2001-05-03
JP4625221B2 (ja) 2011-02-02

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