EP0919049B1 - Resonanzschwingkreis für die elektronische artikelsicherung - Google Patents
Resonanzschwingkreis für die elektronische artikelsicherung Download PDFInfo
- Publication number
- EP0919049B1 EP0919049B1 EP97936674A EP97936674A EP0919049B1 EP 0919049 B1 EP0919049 B1 EP 0919049B1 EP 97936674 A EP97936674 A EP 97936674A EP 97936674 A EP97936674 A EP 97936674A EP 0919049 B1 EP0919049 B1 EP 0919049B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- resonant circuit
- dielectric layer
- conductive tracks
- selected area
- coils
- 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
Links
- 230000009849 deactivation Effects 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 230000007547 defect Effects 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 33
- 239000004020 conductor Substances 0.000 description 20
- 239000003990 capacitor Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005293 physical law Methods 0.000 description 1
- 230000007420 reactivation Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
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
- G08B13/242—Tag deactivation
-
- 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
- G08B13/2437—Tag layered structure, processes for making layered 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
- G08B13/2448—Tag with at least dual detection means, e.g. combined inductive and ferromagnetic tags, dual frequencies within a single technology, tampering detection or signalling means on the tag
Definitions
- the invention relates to a resonant circuit for the electronic article surveillance.
- Resonance resonant circuits which at a predetermined resonance frequency, which is usually 8.2 MHz, to resonance vibrations are excited for the purpose of General anti-theft protection in department stores. They are often an integral part of adhesive labels or Cardboard hang tags attached to the items to be secured are attached.
- the department store is with one electronic surveillance system in the exit area equipped that recognizes the resonant circuits and one Alarm triggers when a secured item is in an unauthorized manner Way a secured surveillance zone happens. Once a Customer has paid for the goods, the resonant circuit deactivated. The measure prevents a Alarm is triggered as soon as an item is lawfully purchased has been passed and subsequently the surveillance zone.
- the deactivation systems that are often placed in the checkout area are generating a resonance signal with a larger one Amplitude as it is generated in the surveillance systems.
- a resonance label is usually accompanied by a signal whose field strength is greater than 1.5 A / m, deactivated.
- EP 0 181 327 B1 describes a deactivable device Resonance label described, which results from a dielectric carrier layer, capacitor plates to both Sides of the dielectric layer and a spiral Turn on either side of the dielectric Layer.
- a selected area prepared for deactivation a selected area prepared for deactivation.
- the dielectric layer is thinner here than in the other areas.
- the invention has for its object a resonant circuit propose that be reliably disabled can.
- the object is achieved in that the resonant circuit from two spiral conductor tracks and one dielectric layer, the two conductor tracks are wound in opposite directions and to both Sides of the dielectric layer are arranged such that they overlap at least partially, with at least one selected area is provided in which a conductive Path between the two conductor tracks is created as soon as one sufficiently high energy through an external alternating field is fed.
- the invention therefore has no separate ones Capacitor plates on; rather, these are directly through the two at least partially overlapping Conductor tracks formed.
- Resonant circuit has the dielectric Layer essentially a uniform thickness and none additional manufacturing defects (e.g. air pockets).
- This configuration is particularly advantageous in connection with the training that the selected area to the outer end regions of the conductor tracks, where the Induction voltage of the conductor tracks is maximum.
- the selected area to the outer end regions of the conductor tracks, where the Induction voltage of the conductor tracks is maximum.
- any place of the To prepare the resonant circuit in particular.
- the deactivation area lies in the use of physical laws automatically in a predeterminable range the outer ends of the spiral traces.
- Resonant circuit suggests that the selected one Area at any point of the overlapping Conductor tracks lie and are prepared in such a way that when they are created of the deactivation signal the conductive path on the prepared site.
- the dielectric layer is thinner in the selected area than in the other areas or that it is prepared location around a hole in the dielectric layer acts.
- Resonant circuit provides that the dielectric Another physical layer in the selected area or chemical in nature.
- the dielectric Layer consists of at least two components.
- the dielectric Layer consists of at least two components.
- the melting point of one component above the manufacturing temperature for the Resonant circuits i.e. this layer is during of the manufacturing process does not melt.
- the components are furthermore according to a further training of the Obtain the resonant circuit so that it can either by Coating or lamination can be put together.
- Another improvement in terms of a safe Deactivation can also be achieved in that the outer ends of the two traces in a small one Area overlap and that is at the outer ends of the Conductors a relatively long area without overlap connects.
- Fig. 1 shows an embodiment of the invention Resonant circuit 6 in plan view. 2 is the in Fig. 1 shown resonant circuit 6 in cross section see.
- the resonant circuit 6 is deactivated by a short circuit between the two spiral Conductor tracks 2, 3, which are preferably made of aluminum are generated through the dielectric layer 4 becomes.
- An applied alternating magnetic field e.g. is emitted by the monitoring system AC voltages in the two spiral conductor tracks 2, 3 of the resonant circuit 6.
- the two spiral Conductor tracks 2, 3, which at least partially overlap, are wrapped in opposite directions. Therefore points the outer end of the lower coil 2 has a positive potential relative to the inner end of the lower coil 2 if that inner end of the upper coil 3 has a positive potential with respect to the outer end of the upper coil 3. It stays So it should be noted that the points / areas in which the induced alternating voltages between the two coils 2, 3 are maximum, located in the end regions of the coils 2, 3.
- FIG. 1 the upper coil 3 has fewer turns than the lower coil 2, the highest voltages between the ends of the upper coil 3 and the positions directly below the lower coil 2 generated.
- Fig. 3 illustrates the voltage relationships in different areas of the two themselves at least partially overlapping coils 2, 3 one Resonant circuit 6, according to an advantageous Further development of the resonant circuit 6 according to the invention can be used.
- Fig. 3 shows the different voltages in different Areas of the two overlapping coils 2, 3 over their length during the electromagnetic Induction occur.
- the dielectric layer 4 is not uniform is thick or contains air bubbles 7, which is due to Manufacturing errors is quite possible Deactivation in different areas of coils 2, 3 occur. Such manufacturing defects can be local Cause vulnerabilities and even holes through Air pockets in the dielectric layer 4 cause. As a result, the dielectric layer 4 breaks thereon local vulnerabilities together, though that Voltage potential here is lower than at the ends of upper coil 2 and lower coil 3. Because the voltage potential is lower at the local weak points than at the ends of the conductor tracks 2, 3, is used to generate the Deactivation short circuit available electrical energy less than the electrical energy that to create a deactivation short at the ends the upper coil 3 would be necessary.
- Fig. 5 shows a cross section of a one layer existing dielectric 4 with manufacturing defects, here Air bubbles 7 and irregularities in the area Surface.
- a dielectric layer which is essentially a has uniform thickness and is largely free of local vulnerabilities that arise as a result of manufacturing.
- Such a uniform dielectric layer 4 provides one Deactivation in places where maximum Voltage and energy can be found, i.e., related to that Example shown at the ends of the upper conductor track 2. Short circuits caused by such deactivation are very robust and not very susceptible to unintentional reactivation.
- the resonant circuit 6 consists of the dielectric layer 4 from at least two components 4a, 4b, an upper one Component 4a and a lower component 4b.
- the lower one Component 4b is stamped onto the lower coil 3 applied.
- the upper component 4a is on the upper coil 2 applied.
- the upper component has 4a a relatively low melting point that allows her to Serve hot melt adhesive and the two coils 2, 3 during hot stamping the upper coil 2 towards the lower coil 3 glue.
- the upper component 4a of the dielectric layer 4 melts during hot stamping of the upper coil 2.
- Die lower component 4b of the dielectric layer 4 has one higher melting point and does not melt during the Hot stamping on the top spool 2.
- the uniformity of the lower component 4b of the dielectric layer 4 which is not melts, improves the uniformity in the thickness of the dielectric layer 4 overall.
- the 6 shows a cross section of a resonant circuit 6 with a dielectric layer 4 consisting of two components 4a, 4b.
- the lower component 4b can either be coated the lower coil 3 or by laminating the lower one Component 4b of the dielectric layer 4 on the coil 3 getting produced.
- the coil material is usually located (A1) in the form of wide roll material, so that the Uniformity of the surface of the dielectric layer 4 can be maintained and other flaws that for example caused by air pockets 7, be minimized.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Security & Cryptography (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
- Filters And Equalizers (AREA)
Description
- 1
- Trägermaterial
- 2
- obere Spule
- 3
- untere Spule
- 4
- dielektrische Schicht
- 4a
- obere Komponente
- 4b
- untere Komponente
- 5
- Klebeschicht
- 6
- Resonanzschwingkreis
- 7
- Lufteinschluß
Claims (11)
- Resonanzschwingkreis (6) für die elektronische Artikelsicherung, bestehend aus zwei spiralförmigen Leiterbahnen (Spulen 2, 3) und einer dielektrischen Schicht (4), wobei die beiden spiralförmigen Leiterbahnen (2, 3) in entgegengesetzte Richtungen gewickelt sind und zu beiden Seiten der dielektrischen Schicht (4) derart angeordnet sind, daß sie zumindest teilweise überlappen, wobei zumindest ein ausgewählter Bereich vorgesehen ist, in dem ein leitfähiger Pfad zwischen den beiden spiralförmigen Leiterbahnen (2, 3) entsteht, sobald eine ausreichend hohe Energie durch ein äußeres Wechselfeld zugeführt wird.
- Resonanzschwingkreis nach Anspruch 1,
wobei die dielektrische Schicht (4) im wesentlichen eine gleichmäßige Dicke und keine zusätzlichen Fertigungsfehler (z.B. Lufteinschlüsse (7)) aufweist. - Resonanzschwingkreis nach Anspruch 1 und 2,
wobei der ausgewählte Bereich an den äußeren Endbereichen der Spulen (2, 3) liegt, an denen die Induktionsspannung der Spulen (2, 3) Leiterbahnen maximal ist. - Resonanzschwingkreis nach Anspruch 1,
wobei der ausgewählte Bereich (8) an einer beliebigen Stelle der überlappenden Spulen (2, 3) liegt und derart präpariert ist, daß bei Anlegen des Deaktivierungssignals der leitfähige Pfad in dem ausgewählten Bereich (9) aufgebaut wird. - Resonanzschwingkreis nach Anspruch 4,
wobei die dielektrische Schicht (4) an der ausgewählten Stelle dünner ist als in den übrigen Bereichen oder daß es sich bei der ausgewählte Bereich (8) um ein Loch in der dielektrischen Schicht (4) handelt. - Resonanzschwingkreis nach Anspruch 4,
wobei die dielektrische Schicht (4) in dem ausgewählten Bereich eine andere physikalische oder chemische Beschaffenheit aufweist. - Resonanzschwingkreis nach Anspruch 1 oder 2,
wobei die dielektrische Schicht (4) aus zumindest zwei Komponenten (4a, 4b) besteht. - Resonanzschwingkreis nach Anspruch 1 oder 7,
wobei der Schmelzpunkt der einen Komponente (4a; 4b) oberhalb der Fertigungstemperatur für die Resonanzschwingkreise (6) liegt. - Resonanzschwingkreis nach Anspruch 7 oder 8,
wobei die Komponenten (4a, 4b) derart beschaffen sind, daß sie entweder durch Beschichtung oder Laminierung zusammenfügbar sind. - Sicherungelement nach Anspruch 2,
wobei sich die Überlappungsbereiche zwischen den beiden spiralförmigen Leiterbahnen (2, 3) und somit die Kapazität zwischen den spiralförmigen Leiterbahnen (2, 3) an den inneren Enden der spiralförmigen Leiterbahnen (2, 3) konzentrieren. - Resonanzschwingkreis nach Anspruch 10,
wobei die äußeren Enden der beiden spiralförmigen Leiterbahnen (2, 3) in einem kleinen Bereich überlappen und wobei sich an die äußeren Enden der Leiterbahnen (2, 3) ein relativ langer überlappungsfreier Bereich anschließt.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19631775 | 1996-08-06 | ||
DE19631775 | 1996-08-06 | ||
DE19705722A DE19705722A1 (de) | 1996-08-06 | 1997-02-14 | Resonanzschwingkreis für die elektronische Artikelsicherung |
DE19705722 | 1997-02-14 | ||
PCT/EP1997/004113 WO1998006074A1 (de) | 1996-08-06 | 1997-07-29 | Resonanzschwingkreis für die elektronische artikelsicherung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0919049A1 EP0919049A1 (de) | 1999-06-02 |
EP0919049B1 true EP0919049B1 (de) | 2000-03-29 |
Family
ID=26028182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97936674A Expired - Lifetime EP0919049B1 (de) | 1996-08-06 | 1997-07-29 | Resonanzschwingkreis für die elektronische artikelsicherung |
Country Status (11)
Country | Link |
---|---|
US (1) | US6169482B1 (de) |
EP (1) | EP0919049B1 (de) |
JP (1) | JP3974659B2 (de) |
AT (1) | ATE191288T1 (de) |
AU (1) | AU3941897A (de) |
CA (1) | CA2262585C (de) |
DK (1) | DK0919049T3 (de) |
ES (1) | ES2147017T3 (de) |
NO (1) | NO313065B1 (de) |
PT (1) | PT919049E (de) |
WO (1) | WO1998006074A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19905886A1 (de) * | 1999-02-11 | 2000-08-17 | Meto International Gmbh | Identifizierungselement und Verfahren zur Herstellung eines Identifizierungselements |
JP3390389B2 (ja) * | 1999-12-08 | 2003-03-24 | チェックポイント・マニュファクチュアリング・ジャパン株式会社 | 共振タグ |
US6400271B1 (en) * | 2000-03-20 | 2002-06-04 | Checkpoint Systems, Inc. | Activate/deactiveable security tag with enhanced electronic protection for use with an electronic security system |
FR2832530B1 (fr) * | 2001-11-22 | 2004-08-20 | Nojim | Procede de fabrication d'une etiquette a circuits de resonance |
JP2005280287A (ja) * | 2004-03-31 | 2005-10-13 | Tokai Aluminum Foil Co Ltd | 共振ラベル用積層材の製造法 |
JP2006301827A (ja) * | 2005-04-19 | 2006-11-02 | Aruze Corp | 非接触icカードシステム、並びに非接触icカードの取付体 |
US20070164865A1 (en) * | 2005-11-04 | 2007-07-19 | Gerald Giasson | Security sensor system |
US20080191883A1 (en) * | 2007-02-12 | 2008-08-14 | Checkpoint Systems, Inc. | Resonant tag |
US7812734B2 (en) * | 2007-12-20 | 2010-10-12 | Ken Hardin | Alarm system employing existing conductive aspect of copper lines as well as optional pressure switch sensor for triggering a copper theft event |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5285191A (en) * | 1981-10-30 | 1994-02-08 | Reeb Max E | LC marker construction useful as an electromagnetically interrogatable transponder means |
US4498076A (en) * | 1982-05-10 | 1985-02-05 | Lichtblau G J | Resonant tag and deactivator for use in an electronic security system |
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 |
NL8700388A (nl) | 1987-02-17 | 1988-09-16 | Nedap Nv | Flexibele identificatielabel. |
US4876555B1 (en) * | 1987-03-17 | 1995-07-25 | Actron Entwicklungs Ag | Resonance label and method for its fabrication |
CH680823A5 (de) | 1990-08-17 | 1992-11-13 | Kobe Properties Ltd | |
CH682957A5 (de) * | 1991-04-16 | 1993-12-15 | Kobe Properties Ltd | Verfahren zur Deaktivierung einer Resonanz-Etikette. |
US5241299A (en) | 1991-05-22 | 1993-08-31 | Checkpoint Systems, Inc. | Stabilized resonant tag circuit |
EP0755035B1 (de) | 1995-07-17 | 2001-08-16 | Checkpoint Manufacturing Japan Co., Ltd. | Resonanzetikett und Verfahren zu seiner Herstellung |
-
1997
- 1997-07-29 EP EP97936674A patent/EP0919049B1/de not_active Expired - Lifetime
- 1997-07-29 WO PCT/EP1997/004113 patent/WO1998006074A1/de active IP Right Grant
- 1997-07-29 JP JP50756698A patent/JP3974659B2/ja not_active Expired - Fee Related
- 1997-07-29 ES ES97936674T patent/ES2147017T3/es not_active Expired - Lifetime
- 1997-07-29 US US09/147,645 patent/US6169482B1/en not_active Expired - Lifetime
- 1997-07-29 CA CA002262585A patent/CA2262585C/en not_active Expired - Lifetime
- 1997-07-29 AT AT97936674T patent/ATE191288T1/de not_active IP Right Cessation
- 1997-07-29 AU AU39418/97A patent/AU3941897A/en not_active Abandoned
- 1997-07-29 PT PT97936674T patent/PT919049E/pt unknown
- 1997-07-29 DK DK97936674T patent/DK0919049T3/da active
-
1999
- 1999-02-04 NO NO19990516A patent/NO313065B1/no not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CA2262585C (en) | 2002-02-26 |
NO990516L (no) | 1999-02-04 |
PT919049E (pt) | 2000-09-29 |
NO313065B1 (no) | 2002-08-05 |
WO1998006074A1 (de) | 1998-02-12 |
ATE191288T1 (de) | 2000-04-15 |
CA2262585A1 (en) | 1998-02-12 |
US6169482B1 (en) | 2001-01-02 |
NO990516D0 (no) | 1999-02-04 |
AU3941897A (en) | 1998-02-25 |
EP0919049A1 (de) | 1999-06-02 |
JP3974659B2 (ja) | 2007-09-12 |
JP2001507141A (ja) | 2001-05-29 |
ES2147017T3 (es) | 2000-08-16 |
DK0919049T3 (da) | 2000-08-28 |
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