EP1224640B1 - Sicherungselement für die elektronische artikelsicherung - Google Patents
Sicherungselement für die elektronische artikelsicherung Download PDFInfo
- 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
Links
- 239000010410 layer Substances 0.000 claims description 17
- 239000012790 adhesive layer Substances 0.000 claims description 2
- 239000004922 lacquer Substances 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 239000004020 conductor Substances 0.000 abstract description 37
- 238000001514 detection method Methods 0.000 abstract description 12
- 238000012544 monitoring process Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000019688 fish Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000035945 sensitivity 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
-
- 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.
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)
- Fuses (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
Description
Ein weiterer Nachteil der bekannten RF-Sicherungselemente besteht darin, dass die Resonanz-Frequenz der Sicherungselemente durch eine in der Nähe des Sicherungselements befindliche elektrisch leitende Masse verstimmt; d. h. verändert werden kann. Diesen Effekt kann sich ein kundiger Dieb zunutze machen und die Decektionsrate drastisch verringern, indem er das Sicherungselement in seine Hand nimmt. Darüber hinaus bestehen Schwierigkeiten, Sicherungselemente der beschriebenen Art, die an Produkten mit hohem Wassergehalt angebracht sind, mit hinreichender Sicherheit zu detektieren. Solche Produkte mit hohem Wassergehalt sind z. B. Fleisch, Fisch oder Getränkeflaschen.
- Fig. 1:
- eine Draufsicht auf die untere Leiterbahn gemäß einer bevorzugten Ausgestaltung des erfindungsgemäßen Sicherungselements,
- Fig. 2:
- eine Draufsicht auf die obere Leiterbahn gemäß einer bevorzugten Ausgestaltung des erfindungsgemäßen Sicherungselements und
- Fig. 3:
- eine Draufsicht auf ein erfindungsgemäßes Sicherungselement, das sich aus den in den Figuren Fig. 1 und Fig. 2 gezeigten Leiterbahnen zusammensetzt.
Claims (7)
- Sicherungselement für die elektronische Artikelsicherung, bestehend aus einer unteren Leiterbahn (1) und einer oberen Leiterbahn (5), wobei die Leiterbahnen (1, 5) eine Kontaktzone (2) und daran einseitig anschließend je eine Windung (3) mit unterschiedlichem Drehsinn aufweisen, wobei die Leiterbahnen (1, 5) übereinander angeordnet sind und im Bereich der Kontaktzone (2) eine elektrische Verbindung zwischen der unteren Leiterbahn (1) und der oberen Leiterbahn (5) besteht und wobei der von beiden Windungen (3) eingeschlossene Drehwinkel (a, b) jeweils kleiner 2π ist.
- Sicherungselement nach Anspruch 1, dadurch gekennzeichnet, dass zwischen der unteren Leiterbahn (1) und der oberen Leiterbahn (5) mit Ausnahme der Kontaktzone (2) eine dielektrische Schicht vorhanden ist.
- Sicherungselement nach Anspruch 2, dadurch gekennzeichnet, dass die dielektrische Schicht eine Klebeschicht ist.
- Sicherungselement nach Anspruch 2, dadurch gekennzeichnet, dass die dielektrische Schicht eine dielektrische Folie, insbesondere aus PET, ist.
- Sicherungselement nach Anspruch 2, dadurch gekennzeichnet, dass die dielektrische Schicht eine dielektrische Lackschicht ist.
- Sicherungselement nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass die Dicke der dielektrischen Schicht kleiner oder gleich 2 µm ist.
- Sicherungselement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Leiterbahnen (1, 5) im Bereich der Kontaktzone (2) durch Durchstanzen elektrisch verbunden werden.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19951561A DE19951561A1 (de) | 1999-10-27 | 1999-10-27 | Sicherungselement für die elektronischen Artikelsicherung |
DE19951561 | 1999-10-27 | ||
PCT/EP2000/009522 WO2001031601A1 (de) | 1999-10-27 | 2000-09-28 | Sicherungselement für die elektronische artikelsicherung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1224640A1 EP1224640A1 (de) | 2002-07-24 |
EP1224640B1 true EP1224640B1 (de) | 2003-08-06 |
Family
ID=7926929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00969337A Expired - Lifetime EP1224640B1 (de) | 1999-10-27 | 2000-09-28 | Sicherungselement für die elektronische artikelsicherung |
Country Status (11)
Country | Link |
---|---|
US (1) | US6987453B1 (de) |
EP (1) | EP1224640B1 (de) |
JP (1) | JP4625221B2 (de) |
AT (1) | ATE246831T1 (de) |
AU (1) | AU777178B2 (de) |
DE (2) | DE19951561A1 (de) |
DK (1) | DK1224640T3 (de) |
ES (1) | ES2203521T3 (de) |
NO (1) | NO20021911L (de) |
NZ (1) | NZ517425A (de) |
WO (1) | WO2001031601A1 (de) |
Families Citing this family (6)
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 |
US11769938B2 (en) * | 2018-06-27 | 2023-09-26 | Avery Dennison Retail Information Services Llc | RFID tags operating in the high frequency band |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4397924A (en) | 1981-06-15 | 1983-08-09 | Duracell Inc. | High temperature solid state storage cell |
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 |
US5291180A (en) * | 1981-10-30 | 1994-03-01 | Reeb Max E | LC structure useful in radio frequency security systems |
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 |
DE19708180A1 (de) * | 1996-11-04 | 1998-05-07 | Esselte Meto Int Gmbh | Sicherungselement für die elektronische Artikelüberwachung |
EP0935767B1 (de) * | 1996-11-04 | 2002-04-03 | Meto International 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 |
DE69806388T2 (de) * | 1997-08-08 | 2002-11-21 | Sca Coordination Center Nv, Zaventem | Polymere funkfrequenzetiketten und herstellungsverfahren dazu |
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 |
-
1999
- 1999-10-27 DE DE19951561A patent/DE19951561A1/de not_active Withdrawn
-
2000
- 2000-09-28 ES ES00969337T patent/ES2203521T3/es not_active Expired - Lifetime
- 2000-09-28 DK DK00969337T patent/DK1224640T3/da active
- 2000-09-28 WO PCT/EP2000/009522 patent/WO2001031601A1/de active IP Right Grant
- 2000-09-28 JP JP2001534108A patent/JP4625221B2/ja not_active Expired - Fee Related
- 2000-09-28 AT AT00969337T patent/ATE246831T1/de not_active IP Right Cessation
- 2000-09-28 NZ NZ517425A patent/NZ517425A/xx unknown
- 2000-09-28 DE DE50003223T patent/DE50003223D1/de not_active Expired - Lifetime
- 2000-09-28 AU AU79095/00A patent/AU777178B2/en not_active Ceased
- 2000-09-28 EP EP00969337A patent/EP1224640B1/de not_active Expired - Lifetime
-
2002
- 2002-04-23 NO NO20021911A patent/NO20021911L/no not_active Application Discontinuation
- 2002-04-29 US US10/135,083 patent/US6987453B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19951561A1 (de) | 2001-05-03 |
WO2001031601A1 (de) | 2001-05-03 |
NO20021911L (no) | 2002-05-14 |
JP2003513381A (ja) | 2003-04-08 |
DK1224640T3 (da) | 2003-11-24 |
NZ517425A (en) | 2003-01-31 |
ATE246831T1 (de) | 2003-08-15 |
EP1224640A1 (de) | 2002-07-24 |
DE50003223D1 (de) | 2003-09-11 |
US20060007004A1 (en) | 2006-01-12 |
AU777178B2 (en) | 2004-10-07 |
AU7909500A (en) | 2001-05-08 |
JP4625221B2 (ja) | 2011-02-02 |
US6987453B1 (en) | 2006-01-17 |
NO20021911D0 (no) | 2002-04-23 |
ES2203521T3 (es) | 2004-04-16 |
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