EP0992029A1 - Vorrichtung zur überwachung von elektronisch gesicherten artikeln in einer überwachungszone - Google Patents
Vorrichtung zur überwachung von elektronisch gesicherten artikeln in einer überwachungszoneInfo
- Publication number
- EP0992029A1 EP0992029A1 EP98929429A EP98929429A EP0992029A1 EP 0992029 A1 EP0992029 A1 EP 0992029A1 EP 98929429 A EP98929429 A EP 98929429A EP 98929429 A EP98929429 A EP 98929429A EP 0992029 A1 EP0992029 A1 EP 0992029A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flexible
- layer
- layers
- side wall
- surveying
- 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.)
- Granted
Links
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
- G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
- G08B13/2468—Antenna in system and the related signal processing
- G08B13/2474—Antenna or antenna activator geometry, arrangement or layout
Definitions
- the electronic monitoring devices are usually located in the entrance or exit area of department stores and warehouses in order to indicate the unauthorized removal of the correspondingly secured items from the sales or storage area.
- EP 0668626 A1 has disclosed an antenna device which consists of a housing for receiving the transmitting and receiving antennas and a frame which extends essentially along the outer edge regions of the housing.
- the frame part provided on the upper edge of the housing can be removed, so that the antenna arrangement can be removed from the housing or brought into the housing through the released opening.
- the object of the invention is to propose an inexpensive device for monitoring electronically secured articles.
- the device is constructed from individual layers of material, each of the layers of material being flexible and of low strength in itself, while the layers of material in combination are distinguished by high bending rigidity and strength.
- the effect is exploited that, by joining individual layers of relatively low stability, strength and bending stiffness are ultimately achieved which far exceed the sum of the strengths and bending stiffnesses of the individual layers. Since the demands placed on the individual layers of material - in particular their stability - may be relatively low, the device according to the invention can be manufactured very inexpensively.
- the device according to the invention is composed of the following layers: a first side wall made of a flexible material, a filler layer made of a flexible material, a carrier layer made of a flexible material, the surface of which is structured in such a way that it receives the transmitter coils and / or receiving coils is suitable, and a second side wall made of a flexible material.
- the first side wall is made of a material that shields electromagnetic radiation. Suitable conductive materials are all conductive materials. According to a preferred embodiment, the side wall is made of aluminum. It has been found that a thickness of the aluminum layer in the millimeter range is completely sufficient.
- a variant of the previously described embodiment provides that a separate, flexible shielding layer is provided between the first side wall and the filler layer on the side facing away from the monitoring zone.
- this shielding layer is made of aluminum, which can have a thickness of a few tenths of a millimeter.
- the individual layers are firmly connected to one another at least at certain points. In the simplest case, the layers are glued together.
- the filling layer is made of styrofoam or of filling foam.
- polystyrene When using polystyrene, it has a shape that is complementary to the corresponding side of the carrier layer. If filling foam is used, it is applied directly to the corresponding side of the carrier layer.
- the carrier layer is a compressed glass fiber material.
- the use of an injection molded part would also be possible.
- the side walls of the device according to the invention are made of a flame-retardant material.
- FIG. 4 shows a cross section through the device according to the invention according to the identification IV-IV in FIG. 3.
- 1 shows a plan view of an embodiment of the device 1 according to the invention.
- the device 1 is delimited on its front and back by a side wall 2a, 2b.
- the side wall facing away from the monitoring zone can at the same time be designed as a shielding layer 12.
- the side walls are made of a flame-retardant material in order to meet the safety regulations in public facilities.
- two further layers are arranged between the two side walls 2a, 2b: a carrier layer 7 with a structured surface for receiving the receiving coils (8) and / or the transmitting coils (9) and a filling layer 10.
- the Carrier layer 7 preferably consists of pressed glass fiber material
- the filling layer 10 is either polystyrene or a filling foam.
- the individual layers of the device according to the invention are connected to one another at least at certain points. In the simplest case, they are glued together.
- the side areas and the upper areas of the material layers are closed with side profiles 3 and a cover profile 4.
- an alarm device which is usually designed such that it acoustically and optically indicates the detection of an electronically secured article in the monitoring zone.
- the device 1 is fastened to the floor by means of the laterally attached fastening elements 6, that is to say that a flat element of relatively great height stands freely in the exit or checkout area of a department store and is fastened far below its center of gravity. If one furthermore considers that device 1 is located in an area in which there is a lot of public traffic, with customers usually still traveling with shopping carts, then it becomes clear what high stability requirements the device has to meet. While in all previously known devices the required stability was only achieved by using appropriately stable and expensive materials, the device according to the invention surprisingly manages to achieve a comparable effect by combining flexible or flexible and inexpensive material layers.
- FIG. 2 shows a top view of the structured carrier layer 7 with the mounted receiving coils 8.
- the three receiving coils 8 arranged one above the other have the shape of horizontal "eight". As a result, a relatively constant detection rate is achieved within individual areas of the monitoring zone.
- the receiving coils are embedded in depressions in the carrier layer 7.
- FIG 3 shows a top view of the carrier layer 7 with the transmitter coil 9 installed.
- the structured upper side of the carrier layer 7 has channel-shaped, circumferential depressions 11, into which the wire of the transmitter coil is inserted. Since both the receiving coils 8 and the transmitting coils 9 as well as all electrical connections and connections run within the carrier layer 7, it is possible to fix the second side wall 2b directly to the carrier layer 7. There is nevertheless a sufficiently large contact area available to achieve the stability required for the device according to the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Automation & Control Theory (AREA)
- Computer Security & Cryptography (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Alarm Systems (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19726986A DE19726986A1 (de) | 1997-06-25 | 1997-06-25 | Vorrichtung zur Überwachung von elektronischen gesicherten Artikeln in einer Überwachungszone |
DE19726986 | 1997-06-25 | ||
PCT/EP1998/003412 WO1999000778A1 (de) | 1997-06-25 | 1998-06-08 | Vorrichtung zur überwachung von elektronisch gesicherten artikeln in einer überwachungszone |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0992029A1 true EP0992029A1 (de) | 2000-04-12 |
EP0992029B1 EP0992029B1 (de) | 2002-04-10 |
Family
ID=7833621
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98929429A Expired - Lifetime EP0992029B1 (de) | 1997-06-25 | 1998-06-08 | Vorrichtung zur überwachung von elektronisch gesicherten artikeln in einer überwachungszone |
Country Status (8)
Country | Link |
---|---|
US (1) | US6181247B1 (de) |
EP (1) | EP0992029B1 (de) |
AT (1) | ATE216112T1 (de) |
AU (1) | AU739935B2 (de) |
DE (2) | DE19726986A1 (de) |
DK (1) | DK0992029T3 (de) |
ES (1) | ES2174448T3 (de) |
WO (1) | WO1999000778A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6556140B2 (en) * | 2000-09-04 | 2003-04-29 | Impro Technologies (Pty) Ltd. | Proximity transponder system |
ES2303243T3 (es) * | 2004-04-28 | 2008-08-01 | Checkpoint Systems, Inc. | Sistema electronico de seguimiento de articulos para bastidor de venta al detalle que utilizan antena de bucle. |
US7388503B2 (en) * | 2005-03-24 | 2008-06-17 | Intel Corporation | Shielded RFID tags in labels |
CA2936044C (en) * | 2016-07-11 | 2019-10-22 | Greg Watkin | Combination media display and electronic article surveillance pedestal |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4623877A (en) * | 1983-06-30 | 1986-11-18 | Knogo Corporation | Method and apparatus for detection of targets in an interrogation zone |
US4509039A (en) * | 1983-07-05 | 1985-04-02 | Minnesota Mining And Manufacturing Company | Shielded, closely spaced transmit-receiver antennas for electronic article surveillance system |
US4769631A (en) * | 1986-06-30 | 1988-09-06 | Sensormatic Electronics Corporation | Method, system and apparatus for magnetic surveillance of articles |
US4859991A (en) * | 1987-08-28 | 1989-08-22 | Sensormatic Electronics Corporation | Electronic article surveillance system employing time domain and/or frequency domain analysis and computerized operation |
DE3844848C2 (de) * | 1987-08-28 | 1995-11-23 | Sensormatic Electronics Corp | Antenne für eine Anlage zur Artikelüberwachung |
US5121103A (en) * | 1988-07-29 | 1992-06-09 | Knogo Corporation | Load isolated article surveillance system and antenna assembly |
US4994939A (en) * | 1989-11-15 | 1991-02-19 | Minnesota Mining And Manufacturing Company | Universal lattice for magnetic-electronic article surveillance system |
US5057844A (en) * | 1990-03-19 | 1991-10-15 | Rothstein Mark B | Insulated underground antenna and method for utilizing same |
US5260853A (en) * | 1992-09-28 | 1993-11-09 | Sensormatic Electronics Corporation | Antenna housing assembly with interlocking members |
JP3631778B2 (ja) * | 1993-06-11 | 2005-03-23 | アクトロン エントヴィックルングス アーゲー | 盗難防止用アンテナ装置 |
MX9405029A (es) * | 1993-07-02 | 1995-01-31 | Us Currency Protection | Paquete de tinte de seguridad con una bolsa flexible y resistente al calorque contiene agentes quimicos. |
JPH07249914A (ja) * | 1994-02-18 | 1995-09-26 | Sensormatic Electron Corp | アンテナペデスタル |
DE4437721A1 (de) * | 1994-10-21 | 1996-04-25 | Giesecke & Devrient Gmbh | Kontaktloses elektronisches Modul |
DE4437844C2 (de) * | 1994-10-22 | 2001-03-08 | Cubit Electronics Gmbh | Kontaktloser Datenträger und Verfahren zu seiner Herstellung |
DE4441122C1 (de) * | 1994-11-19 | 1995-12-21 | Karl Heinz Wendisch | Kontaktlose Ausweis-Chipkarte |
DE19503896A1 (de) * | 1995-02-07 | 1996-08-08 | Esselte Meto Int Gmbh | Einrichtung zur Detektierung eines mit einem elektronischen Sicherungselement versehenen Artikels |
DE19533983C2 (de) * | 1995-09-14 | 1997-09-25 | Wendisch Karl Heinz | Chipkarte mit Antennenwicklung |
DE19544852A1 (de) * | 1995-12-01 | 1997-06-05 | Esselte Meto Int Gmbh | Vorrichtung zur Detektierung eines mit einem elektronischen Sicherungselement versehenen Artikels |
-
1997
- 1997-06-25 DE DE19726986A patent/DE19726986A1/de not_active Withdrawn
-
1998
- 1998-06-08 DK DK98929429T patent/DK0992029T3/da active
- 1998-06-08 WO PCT/EP1998/003412 patent/WO1999000778A1/de active IP Right Grant
- 1998-06-08 EP EP98929429A patent/EP0992029B1/de not_active Expired - Lifetime
- 1998-06-08 AU AU79189/98A patent/AU739935B2/en not_active Ceased
- 1998-06-08 US US09/403,757 patent/US6181247B1/en not_active Expired - Fee Related
- 1998-06-08 ES ES98929429T patent/ES2174448T3/es not_active Expired - Lifetime
- 1998-06-08 DE DE59803750T patent/DE59803750D1/de not_active Expired - Fee Related
- 1998-06-08 AT AT98929429T patent/ATE216112T1/de not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9900778A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE216112T1 (de) | 2002-04-15 |
DK0992029T3 (da) | 2002-07-08 |
DE59803750D1 (de) | 2002-05-16 |
EP0992029B1 (de) | 2002-04-10 |
ES2174448T3 (es) | 2002-11-01 |
WO1999000778A1 (de) | 1999-01-07 |
AU739935B2 (en) | 2001-10-25 |
AU7918998A (en) | 1999-01-19 |
DE19726986A1 (de) | 1999-01-07 |
US6181247B1 (en) | 2001-01-30 |
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