WO1998054680A1 - System zur überwachung von elektromagnetisch gesicherten artikeln in mehreren überwachungszonen - Google Patents
System zur überwachung von elektromagnetisch gesicherten artikeln in mehreren überwachungszonen Download PDFInfo
- Publication number
- WO1998054680A1 WO1998054680A1 PCT/EP1998/002543 EP9802543W WO9854680A1 WO 1998054680 A1 WO1998054680 A1 WO 1998054680A1 EP 9802543 W EP9802543 W EP 9802543W WO 9854680 A1 WO9854680 A1 WO 9854680A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- receiving
- outputs
- transmitting
- zones
- monitoring
- Prior art date
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 invention relates to a system for monitoring electromagnetically secured articles in n monitoring zones (n> 1), each of the n monitoring zones being defined by two transmitting / receiving devices which are arranged on both sides of the monitoring zone, and each transmitting device having at least one transmitter coil and each receiving device has m receiving coils (m> 2).
- the transmitting device consists of a coil with several turns, which are essentially in one plane.
- the windings themselves are divided into at least two groups that are spaced apart by a gap.
- the receiving device has the shape of at least one "eight", the two partial areas of the "eight" being arranged next to one another or one below the other, i.e. the receiving device has a quadrupole characteristic.
- Each receiving device is usually assigned a corresponding evaluation device, which evaluates the signals received in the individual receiving channels. If the receiving device — as in the case of the exemplary embodiment described below — has three receiving coils, a suitable evaluation device is able to evaluate the signals of the six receiving channels of the receiving devices of a monitoring zone. So, as is common in large department stores, there are a large number of these surveillance zones, the demand for the relatively expensive evaluation devices increases accordingly.
- the present invention offers a simple solution to this problem.
- the invention has for its object to propose an inexpensive system for monitoring electromagnetically secured articles.
- the object is achieved in that a switching device is provided which reduces the outputs of the (2 «n) receiving devices to n outputs.
- the outputs of the m receiving coils of the (2 »n) receiving devices which have a maximum of m different inductances l (m), are connected in parallel; a tuning device is also provided which tunes the total inductance of the m receiving coils in such a way that it corresponds essentially to one of the inductances Im.
- This measure ensures, for example, that an evaluation device, which was originally designed for evaluating the received signals of a monitoring zone, can also be used for evaluating the received signals from two or more monitoring zones.
- the application area of an evaluation device is thus at least doubled. Since the number of evaluation devices in the explicitly described case is only half the number of monitoring zones, the system according to the invention saves considerable costs.
- the tuning device be a transformer or an electronic circuit.
- An embodiment of the system according to the invention provides that the switching device switches the outputs of the m receiving coils of a receiving device in parallel.
- the switching device may switch the outputs of corresponding receiving coils (upper, middle and lower receiving coils) of the receiving devices, which are arranged on both sides of the monitoring zone, in parallel.
- the first variant undoubtedly provides a higher detection sensitivity of the monitoring system.
- it has the disadvantage that it is more susceptible to interference signals, which originate, for example, from power cables that are under the monitoring zones run. These interference signals naturally appear in all of the receiving coils lying one above the other.
- FIG. 2 shows a plan view of an embodiment of a transmitting / receiving device
- Fig. 1 shows a schematic representation of an embodiment of the system according to the invention.
- two transmitting / receiving devices 2 arranged in parallel define a monitoring zone 1.
- the received signals of the receiving coils (5, 6, 7) are fed to the switching device 10 via corresponding connecting lines.
- the transmitting device 3 is arranged in the peripheral area of the transmitting / receiving device 2. It consists of a large number of turns arranged side by side.
- the receiving device 4 is composed of three receiving coils 5, 6, 7 arranged one above the other, each of which has the shape of a lying "figure eight".
- the individual receiving coils 5, 6, 7 have the quadrupole characteristic which is favorable with regard to the detection sensitivity, i.e. high field strength in the near range and rapidly decreasing field strength in the far range.
- FIG. 3 shows a circuit diagram of an embodiment of the switching device according to the invention.
- the illustration shows the circuit for the two Transmitting / receiving devices 2 of a monitoring zone 1, therefore, only reproduce half of the inner life of the switching device 10 shown in FIG. 1.
- the outputs of the receiving channels are transformed via the tuning device 8, which in the simplest case is a transformer 9, so that the total inductance of the outputs connected in parallel corresponds to one of the individual inductances of the receiving coils 5, 6, 7.
- one and the same evaluation device can be used both for the evaluation of the signals of the transmitting / receiving devices 2 from a monitoring zone 1 known from the prior art; however, without further changes being necessary, it can be used for the system according to the invention, in which an evaluation device can be used for at least four receiving devices.
- a part of the signal of the two receiving devices 4 is connected in parallel after the transformation and transformed via a further tuning device 8, that is to say a further transformer 9, in such a way that a suitable inductance is again achieved.
- this additional output serves to increase the detection sensitivity within the monitoring zone 1; on the other hand, it enables the capacity of the evaluation device to be used optimally if it was originally or alternatively designed for evaluating the signals from three reception channels from two reception devices 4.
- Monitoring zone transmitting / receiving device transmitting device a first receiving device b second receiving device upper receiving coil middle receiving coil lower receiving coil tuning device transformer 0 switching device
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)
- Alarm Systems (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU76508/98A AU734882B2 (en) | 1997-05-27 | 1998-04-30 | System for the surveillance of electromagnetically protected articles in several interrogation zones |
EP98924245A EP0985205B1 (de) | 1997-05-27 | 1998-04-30 | System zur überwachung von elektromagnetisch gesicherten artikeln in mehreren überwachungszonen |
DE59801089T DE59801089D1 (de) | 1997-05-27 | 1998-04-30 | System zur überwachung von elektromagnetisch gesicherten artikeln in mehreren überwachungszonen |
AT98924245T ATE203612T1 (de) | 1997-05-27 | 1998-04-30 | System zur überwachung von elektromagnetisch gesicherten artikeln in mehreren überwachungszonen |
DK98924245T DK0985205T3 (da) | 1997-05-27 | 1998-04-30 | System til overvågning af elektromagnetisk sikrede varer i flere overvågningszoner |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722078.9 | 1997-05-27 | ||
DE19722078A DE19722078A1 (de) | 1997-05-27 | 1997-05-27 | System zur Überwachung von elektromagnetisch gesicherten Artikeln in mehreren Überwachungszonen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998054680A1 true WO1998054680A1 (de) | 1998-12-03 |
Family
ID=7830590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/002543 WO1998054680A1 (de) | 1997-05-27 | 1998-04-30 | System zur überwachung von elektromagnetisch gesicherten artikeln in mehreren überwachungszonen |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0985205B1 (de) |
AT (1) | ATE203612T1 (de) |
AU (1) | AU734882B2 (de) |
DE (2) | DE19722078A1 (de) |
DK (1) | DK0985205T3 (de) |
ES (1) | ES2161535T3 (de) |
WO (1) | WO1998054680A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4751516A (en) * | 1985-01-10 | 1988-06-14 | Lichtblau G J | Antenna system for magnetic and resonant circuit detection |
EP0414628A2 (de) * | 1989-08-25 | 1991-02-27 | George W. Kaltner | Einzeln gespeiste Vielfach-Rahmenantennen für elektronische Sicherheitssysteme |
WO1995018430A1 (en) * | 1993-12-30 | 1995-07-06 | Sensormatic Electronics Corporation | Article detection in a limited interrogation zone |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5371490A (en) * | 1989-03-22 | 1994-12-06 | Actron Entwicklungs Ag | System for electronic safeguarding against burglary using multiple transmitters and receivers |
US5337040A (en) * | 1991-10-31 | 1994-08-09 | Actron Entwicklungs Ag | Detection apparatus for shoplifting-preventing labels |
NL9400076A (nl) * | 1994-01-17 | 1995-09-01 | Nedap Nv | Diefstaldetectie- en identificatiesysteem. |
US5627516A (en) * | 1994-09-28 | 1997-05-06 | Sensormatic Electronics Corporation | Electronic article surveillance input configuration control system employing expert system techniques for dynamic optimization |
DE19503896A1 (de) * | 1995-02-07 | 1996-08-08 | Esselte Meto Int Gmbh | Einrichtung zur Detektierung eines mit einem elektronischen Sicherungselement versehenen Artikels |
US5600304A (en) * | 1995-11-02 | 1997-02-04 | Sensormatic Electronics Corporation | EAS system with common control station for different personality local stations |
-
1997
- 1997-05-27 DE DE19722078A patent/DE19722078A1/de not_active Withdrawn
-
1998
- 1998-04-30 DE DE59801089T patent/DE59801089D1/de not_active Expired - Fee Related
- 1998-04-30 ES ES98924245T patent/ES2161535T3/es not_active Expired - Lifetime
- 1998-04-30 AU AU76508/98A patent/AU734882B2/en not_active Ceased
- 1998-04-30 DK DK98924245T patent/DK0985205T3/da active
- 1998-04-30 EP EP98924245A patent/EP0985205B1/de not_active Expired - Lifetime
- 1998-04-30 AT AT98924245T patent/ATE203612T1/de not_active IP Right Cessation
- 1998-04-30 WO PCT/EP1998/002543 patent/WO1998054680A1/de active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4751516A (en) * | 1985-01-10 | 1988-06-14 | Lichtblau G J | Antenna system for magnetic and resonant circuit detection |
EP0414628A2 (de) * | 1989-08-25 | 1991-02-27 | George W. Kaltner | Einzeln gespeiste Vielfach-Rahmenantennen für elektronische Sicherheitssysteme |
WO1995018430A1 (en) * | 1993-12-30 | 1995-07-06 | Sensormatic Electronics Corporation | Article detection in a limited interrogation zone |
Also Published As
Publication number | Publication date |
---|---|
EP0985205A1 (de) | 2000-03-15 |
ATE203612T1 (de) | 2001-08-15 |
ES2161535T3 (es) | 2001-12-01 |
DK0985205T3 (da) | 2001-10-22 |
EP0985205B1 (de) | 2001-07-25 |
AU734882B2 (en) | 2001-06-21 |
DE59801089D1 (de) | 2001-08-30 |
DE19722078A1 (de) | 1998-12-03 |
AU7650898A (en) | 1998-12-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69227950T3 (de) | Antennensystem zum Empfang von Rundfunk- oder Kommunikationssignalen von einem Satelliten | |
DE10324847B4 (de) | Empfangsantenne, Kern und tragbare Einrichtung | |
EP0712267B1 (de) | Modulare Steuerungsanlage mit integriertem Feldbusanschluss | |
EP0547563A1 (de) | Leiterplattenantenne | |
DE3108029A1 (de) | "antennenanlage" | |
EP1619750B1 (de) | Antennenanordnung für ein RFID-System | |
EP0218843A2 (de) | Diversity-Antenne für mobile Funkgeräte | |
EP1357503A1 (de) | Transponder mit abgestimmtem Resonanzkreis | |
DE19961817B4 (de) | Frequenzabweichung detektierendes Gerät und Frequenzabweichungs-Detektionsverfahren | |
DE3330881A1 (de) | Halterung fuer eine insbesondere stromkompensierte ferrit-ringkerndrossel | |
EP0889646B1 (de) | Fernsehsignal-Empfänger | |
DE4411233C1 (de) | Frequenzkanal-Multiplexer bzw. -Demultiplexer | |
EP0985205B1 (de) | System zur überwachung von elektromagnetisch gesicherten artikeln in mehreren überwachungszonen | |
EP0907260B1 (de) | Anordnung zur Übertragung, zur Abstrahlung und zum Empfang von Hochfrequenz-Signalen | |
DE3329057C2 (de) | ||
DE3528974A1 (de) | Funktelefonnetz fuer ein in funkzellen aufgeteiltes funkgebiet | |
EP0844945A2 (de) | Anordnung zum kontrollieren des widerstandes einer an einem übertrager angeschlossenen last | |
DE10059179C1 (de) | Schaltungsanordnung für eine Antennenanordnung und Verfahren zum Schalten einer Antennenanordnung | |
EP0935825A1 (de) | Kraftfahrzeug-radarsensor | |
DE2932626C2 (de) | Viertornetzwerk zur Trennung zweier aus doppelt polarisierten Frequenzbändern bestehenden Signalen | |
DE102006041934B4 (de) | Vorrichtung zur Bestimmung der Position eines Beeinflussungselementes | |
DE10042875C2 (de) | Kommunikationsendgerät | |
DE4121399C1 (de) | ||
EP2421722B1 (de) | Anlage, umfassend ein primärleitersystem und ein fahrzeug | |
DE3102256A1 (de) | Schaltungsanordnung zur unterdrueckung von stoersignalen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH HU IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1998924245 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 76508/98 Country of ref document: AU |
|
NENP | Non-entry into the national phase |
Ref country code: JP Ref document number: 1999500141 Format of ref document f/p: F |
|
WWP | Wipo information: published in national office |
Ref document number: 1998924245 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 09424242 Country of ref document: US |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
NENP | Non-entry into the national phase |
Ref country code: CA |
|
WWG | Wipo information: grant in national office |
Ref document number: 1998924245 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 76508/98 Country of ref document: AU |