WO2000052637A1 - Method for converting sensor systems for security labels on goods - Google Patents

Method for converting sensor systems for security labels on goods Download PDF

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Publication number
WO2000052637A1
WO2000052637A1 PCT/EP2000/001732 EP0001732W WO0052637A1 WO 2000052637 A1 WO2000052637 A1 WO 2000052637A1 EP 0001732 W EP0001732 W EP 0001732W WO 0052637 A1 WO0052637 A1 WO 0052637A1
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Prior art keywords
radio frequency
basis
sensor system
goods
coil
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PCT/EP2000/001732
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German (de)
French (fr)
Inventor
Georg Siegel
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Georg Siegel Gesellschaft mit beschränkter Haftung zur Verwertung von gewerblichen Schutzrechten
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Application filed by Georg Siegel Gesellschaft mit beschränkter Haftung zur Verwertung von gewerblichen Schutzrechten filed Critical Georg Siegel Gesellschaft mit beschränkter Haftung zur Verwertung von gewerblichen Schutzrechten
Publication of WO2000052637A1 publication Critical patent/WO2000052637A1/en

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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
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/2468—Antenna in system and the related signal processing
    • G08B13/2477—Antenna or antenna activator circuit

Definitions

  • Anti-theft tags are used in conjunction with anti-theft devices to prevent unauthorized removal of goods from a secured area.
  • the security tags are attached to the goods.
  • the exits of the secured area are provided with security units, which record a security tag that passes them and give a corresponding signal.
  • Various systems are known, for example acustomagnetic, electromagnetic, radio frequency, high frequency and low frequency systems.
  • the invention relates to a method for converting electromagnetic (EM) or radio frequency (RF) system systems into acustomagnetic (AM) system systems for AM security tags.
  • EM electromagnetic
  • RF radio frequency
  • AM customagnetic
  • Electromagnetic systems were used, for example, as transceivers, which means that they contain both transmitter coils and receiver coils in one housing.
  • the transmitter coil usually consists of a copper winding, for example with H being 1.2 meters and B being 0.6 meters. About 60 turns of enamelled copper wire with a cross section of 5 mm width and about 1 mm thickness are formed into a right-angled coil.
  • the ohmic resistance of such a transmitter coil also called a Tx coil, can be up to 1 ⁇ (ohm).
  • the receiver coils also called Rx coils, were designed as anti-parallel 8 executed. For example, two separate rectangular windings, each with 16 turns of 0.5 or 0.23 mm enamelled copper wire, are formed. The ohmic resistances are between 1 ohm and 24 ohm per Rx coil.
  • transceivers can be connected as individual antennas to detect electromagnetic goods security labels, so-called EM labels, consisting of a Permaloi-Iron-Nickel-Chromium alloy, up to a passage width of 0.6 m. Multiple passes could also be trained.
  • EM labels consisting of a Permaloi-Iron-Nickel-Chromium alloy
  • Electromagnetic technology has been installed on a large scale in large and small department stores and shops over the past 15 years, typically at checkouts.
  • the passage widths between two antennas are between 70 - 90 cm clear width.
  • the labels used are so-called permaloy strips in lengths of approximately 60-100 mm and widths of 2-3 mm.
  • the working frequencies of such EM systems vary between 70 Hz and 9 KHz.
  • EM technology has reached its limits in the security area and is increasingly being replaced by alternative technologies. Repairs and especially the procurement of spare parts are becoming increasingly difficult or even impossible.
  • operators, in particular department stores and the like now have to replace their electromagnetic systems with systems operating according to other principles. This results in considerable renovation measures and high costs for the operator.
  • Radio frequency technology has also been widely installed in department stores and shops for many years.
  • Comparatively large components include both a lock and an oscillating circuit, which interact with corresponding coils in radio frequency panels.
  • the lock is, for example, an electromagnetic lock, in which the end of a needle, for example inserted through a textile, is locked.
  • the RF resonant circuit located in the component is fixedly arranged on the textile and the RF coil constructed in a corresponding panel thus reacts to this resonant circuit, which changes a transmitted radio frequency back.
  • the present invention is based on the specification of specifying a method for converting an EM system or an RF system to an AM system, as a result of which a substantial part of the extensive installations can continue to be used, although now or only AM labels can be used.
  • the invention proposes a method for converting a sensor system for electromagnetic security tags working on an electromagnetic basis to a sensor system for acustomagnetic basis for
  • Anti-theft labels wherein the coil of a transmitter circuit is connected in series with a capacitor in order to obtain a resonance circuit with a predetermined resonance frequency.
  • the method according to the invention can also advantageously be applied to an electromagnetic sensor system operating as a transceiver.
  • a resonance frequency of 58 kHz is preferably set.
  • a precisely sized capacitor is connected in series with the winding of the transmitter coil.
  • the capacitor has a resonance voltage of approx. 50 - 400 Vpp. This allows a sufficiently large magnetic field to be generated so that the system can be used for AM technology.
  • the receiver coils have an input resistance of 1 to 24 ohms anyway, so that these coils can be connected directly or indirectly to the circuit of the AM electronics used, in order to receive the resonance frequency of 58 kHz from the label.
  • the sensor units converted according to the invention can each be used in pairs with passage widths of 0.7 to 1.2 meters for the detection of AM labels.
  • the conversion is extremely economical and the overall solution is a low-cost application.
  • multiple antennas can also be arranged in parallel to create multiple passes. Additional AM transmitter / receiver electronics modules are then required for this.
  • the EM systems usually used in the field of consumer electronics, video / radio, CD, cassettes and the like do not even have to be moved from their fixed installation points. Considerable economic advantages are achieved by the invention since large conversions are avoided.
  • the invention also relates to a sensor system for acustomagnetic labels which has been converted in accordance with the method and which has been converted from an EM sensor system by generating a resonant circuit with one of the coils by series connection with a capacitor.
  • a method for converting a sensor system for radio frequency security tags working on a radio frequency basis to a sensor system for acustomagnetic security tags working on an acustomagnetic basis, an acustomagnetically detectable component being integrated in and in the area of a radio frequency oscillating circuit on the label side an acustomagnetic transmitter / receiver system uses a coil for the transmission / reception of a radio frequency.
  • Radio frequency labels consist of hard labels known per se in the form of a disc with a round or essentially rectangular cross section. At least one radio frequency resonant circuit is inserted into these elements. In addition, these elements have a mechanically and / or electronically, electromechanically or otherwise operable lock, which holds an inserted needle until it is unlocked. At the other end of the needle is a needle head. To use these labels, which are known per se, the needle, for example in the case of textiles, is arranged so as to protrude so that the needle head secures against slipping, on the other side the needle is locked in the lock of the resonant circuit carrier.
  • the lock is usually unlocked at the cash register and both the oscillating head carrier and the needle head with needle are removed. If this does not happen, the resonant circuit is detected when the checkout area is exited and an alarm is triggered.
  • an acustomagnetically detectable ferrite rod wound with coil wire can be inserted either in the oscillating head carrier or in the needle head. This insertion can be done, for example, simply by gluing or the like.
  • the ferrite rods or NDA labels can be used in different sizes depending on the desired detection performance, so that the needle heads may have to be adapted.
  • These needle heads usually consist of unbreakable plastics with an open half-shell, in the center of which the needle is arranged.
  • the ferrite or NDA labels can be glued into this half-shell, if necessary cast in.
  • AM antennas are set up in the area of the till exits, into which the radio frequency coils are installed for the detection of the radio frequency resonant circuits.
  • both technologies can be used in combination.
  • This is particularly advantageous for the economical introduction of alternative technologies. While radio frequency technology is used extensively, but the labels are very expensive and very unwieldy and are also very expensive to replace, many department store operators will prefer to switch to the much cheaper AM technology, but do not have to make a sudden change due to the proposal according to the invention carry out.
  • the existing radio frequency labels can continue to be used, even in radio frequency-secured areas, while at the same time the same labels are effective in AM-secured areas since they have been supplemented according to the invention.
  • the RF transmit / receive antennas and the electronics are integrated in AM panels, whereby a sandwich construction is also conceivable, since the antenna windings of RF technology are generally easy to install in the AM antennas. Wire thicknesses of 0.5 to 1 mm 2 enamelled copper wire are common.
  • the invention economically resolves the conversion of conventional goods security technologies to economically modern technologies.

Abstract

The invention relates to a method for converting sensor systems for security labels for goods. The invention aims to provide a method for converting an EM system to an AM system, whereby all the numerous existing installations can be used again, although an AM system is installed. To this end, the invention provides a method for converting a sensor system for electromagnetic security labels for goods which operates as a transceiver on an electromagnetic basis to a sensor system for security labels for goods which operates on an acousto-magnetic basis, whereby the coil of the transmitter switching circuit for the transceiver is connected in series with a capacitor to obtain a resonant circuit with a predetermined resonance frequency, or provides a method for converting a sensor system for radio frequency security labels for goods which operates on a radio frequency basis to a sensor system for acousto-magnetic security labels for goods which operates on an acousto-magnetic basis. An acousto-magnetically detectable component is integrated in the area of a radio frequency oscillating circuit on the label side, and a coil for transmitting/receiving a radio frequency is inserted in an acousto-magnetic transmitting/receiving installation.

Description

Verfahren zur Umrüstung von Sensoranlaqen für Warensicherungsetiketten Process for retrofitting sensor systems for security tags
Warensicherungsetiketten werden zusammen mit Warensicherungsanlagen dazu verwendet, die unerlaubte Entfernung von Waren aus einem abgesicherten Bereich zu verhindern. Die Warensicherungsetiketten werden an den Waren fixiert. Die Ausgänge des gesicherten Bereiches sind mit Sicherungseinheiten versehen, die ein an ihnen vorbeigeführtes Warensicherungsetikett erfassen und ein entsprechendes Signal geben. Es sind verschiedene Systeme bekannt, beispielsweise akustomagnetische, elektromagnetische, Radiofrequenz-, Hochfrequenz- und Niederfrequenzsysteme.Anti-theft tags are used in conjunction with anti-theft devices to prevent unauthorized removal of goods from a secured area. The security tags are attached to the goods. The exits of the secured area are provided with security units, which record a security tag that passes them and give a corresponding signal. Various systems are known, for example acustomagnetic, electromagnetic, radio frequency, high frequency and low frequency systems.
Üblicherweise handelt es sich um Sende-/Empfangseinheiten, die die vom angeregten Warensicherungsetikett ausgehende Resonanzfrequenz erfassen und daraufhin reagieren. Die Erfindung betrifft ein Verfahren zur Umrüstung von elektromagnetischen (EM) oder Radiofrequenz (RF) Systemanlagen in akustomagnetische (AM) Systemanlagen für AM-Warensicherungsetiketten.Usually, these are transmitter / receiver units that record the resonance frequency emanating from the excited goods security label and react to it. The invention relates to a method for converting electromagnetic (EM) or radio frequency (RF) system systems into acustomagnetic (AM) system systems for AM security tags.
Elektromagnetische Systeme wurden beispielsweise als Transceiver eingesetzt, das heißt sie enthalten sowohl Sendespulen als auch Empfangsspulen in einem Gehäuse. Üblicherweise besteht die Sendespule aus einer Kupferwicklung, beispielsweise mit H ist 1 ,2 Meter und B ist 0,6 Meter. Etwa 60 Windungen Kupferlackdraht mit einem Querschnitt von 5 mm Breite und ca. 1 mm Dicke werden zu einem rechtwinkligen Wickel geformt. Der ohmsche Widerstand einer solchen Sendespule, auch Tx-Spule genannt, kann bis zu 1 Ω (Ohm) betragen. Die Emfängerspulen, auch Rx-Spulen genannt, wurden als antiparallele 8 ausgeführt. Beispielsweise werden zwei separate rechteckige Wicklungen mit je 16 Windungen von 0,5 beziehungsweise 0,23 mm Kupferlackdraht ausgebildet. Die ohmschen Widerstände liegen zwischen 1 Ohm und 24 Ohm je Rx-Spule.Electromagnetic systems were used, for example, as transceivers, which means that they contain both transmitter coils and receiver coils in one housing. The transmitter coil usually consists of a copper winding, for example with H being 1.2 meters and B being 0.6 meters. About 60 turns of enamelled copper wire with a cross section of 5 mm width and about 1 mm thickness are formed into a right-angled coil. The ohmic resistance of such a transmitter coil, also called a Tx coil, can be up to 1 Ω (ohm). The receiver coils, also called Rx coils, were designed as anti-parallel 8 executed. For example, two separate rectangular windings, each with 16 turns of 0.5 or 0.23 mm enamelled copper wire, are formed. The ohmic resistances are between 1 ohm and 24 ohm per Rx coil.
Diese Transceiver können als Einzelantenne angeschlossen werden, um elektromagnetische Warensicherungsetiketten, sogenannte EM-Etiketten, bestehend aus einer Permaloi-Eisen-Nickel-Chrom-Legierung, bis zu einer Durchgangsbreite von 0,6 m zu erfassen. Auch Mehrfachdurchgänge konnten ausgebildet werden.These transceivers can be connected as individual antennas to detect electromagnetic goods security labels, so-called EM labels, consisting of a Permaloi-Iron-Nickel-Chromium alloy, up to a passage width of 0.6 m. Multiple passes could also be trained.
Die elektromagnetische Technologie wurde in den vergangenen 15 Jahren in großem Umfang in großen und kleinen Kaufhäusern und Läden installiert, und zwar üblicherweise an Kassencheckouts. Die Durchgangsbreiten zwischen zwei Antennen liegen zwischen 70 - 90 cm lichte Weite. Die verwendeten Etiketten sind sogenannte Permaloy-Streifen in Längen von etwa 60 - 100 mm und Breiten von 2 - 3 mm. Die Arbeitsfrequenzen derartiger EM-Systeme variieren zwischen 70 Hz und 9 KHz. Die EM-Technologie ist im Warensicherungsbereich jedoch an ihre Grenzen gestoßen und wird mehr und mehr durch alternative Technologien ersetzt. Reparaturen und vor allem Ersatzteilbeschaffungen gestalten sich zunehmend schwierig oder sind gar ausgeschlossen. Im großen Umfang müssen nun Betreiber, insbesondere Warenhäuser und dergleichen ihre elektromagnetischen Anlagen gegen nach anderen Prinzipien arbeitende Anlagen austauschen. Es ergeben sich erhebliche Umbaumaßnahmen und hohe Kostenaufwendungen für die Betreiber.Electromagnetic technology has been installed on a large scale in large and small department stores and shops over the past 15 years, typically at checkouts. The passage widths between two antennas are between 70 - 90 cm clear width. The labels used are so-called permaloy strips in lengths of approximately 60-100 mm and widths of 2-3 mm. The working frequencies of such EM systems vary between 70 Hz and 9 KHz. However, EM technology has reached its limits in the security area and is increasingly being replaced by alternative technologies. Repairs and especially the procurement of spare parts are becoming increasingly difficult or even impossible. On a large scale, operators, in particular department stores and the like, now have to replace their electromagnetic systems with systems operating according to other principles. This results in considerable renovation measures and high costs for the operator.
Die Radiofrequenztechnologie wurde ebenfalls seit vielen Jahren in großem Umfang in Kaufhäusern und Läden installiert. Dabei umfassen vergleichsweise große Bauelemente sowohl ein Schloß als auch einen Schwingkreis, der mit entsprechenden Spulen in Radiofrequenzpanels zusammenwirken. Bei dem Schloß handelt es sich beispielsweise um ein elektromagnetisches Schloß, in welchem das Ende einer beispielsweise durch ein Textil hindurchgesteckten Nadel verriegelt wird. Somit ist der in dem Bauteil befindliche RF-Schwingkreis fest an dem Textil angeordnet und die in einem entsprechenden Panel aufgebauten RF- Spule reagiert somit auf diesen Schwingkreis, welche eine ausgesandte Radiofrequenz verändert zurückwirft. Ausgehend von diesem Stand der Technik liegt der vorliegenden Erfindung die A u fg a b e zugrunde, ein Verfahren zur Umrüstung einer EM-Anlage bzw. einer RF-Anlage zu einer AM-Anlage anzugeben, wodurch ein wesentlicher Teil der umfangreichen Installationen weiter verwendet werden kann, obwohl nunmehr auch oder nur noch AM-Etiketten eingesetzt werden können.Radio frequency technology has also been widely installed in department stores and shops for many years. Comparatively large components include both a lock and an oscillating circuit, which interact with corresponding coils in radio frequency panels. The lock is, for example, an electromagnetic lock, in which the end of a needle, for example inserted through a textile, is locked. Thus, the RF resonant circuit located in the component is fixedly arranged on the textile and the RF coil constructed in a corresponding panel thus reacts to this resonant circuit, which changes a transmitted radio frequency back. Based on this prior art, the present invention is based on the specification of specifying a method for converting an EM system or an RF system to an AM system, as a result of which a substantial part of the extensive installations can continue to be used, although now or only AM labels can be used.
Zur technischen Lö s u n g dieser Aufgabe wird mit der Erfindung vorgeschlagen ein Verfahren zur Umrüstung einer auf elektromagnetischer Basis arbeitenden Sensoranlage für elektromagnetische Warensicherungsetiketten zu einer auf akustomagnetischer Basis arbeitenden Sensoranlage fürFor the technical solution to this problem, the invention proposes a method for converting a sensor system for electromagnetic security tags working on an electromagnetic basis to a sensor system for acustomagnetic basis for
Warensicherungsetiketten, wobei die Spule eines Senderschaltkreises mit einem Kondensator in Reihe geschaltet wird, um einen Resonanzschaltkreis mit vorgegebener Resonanzfrequenz zu erhalten.Anti-theft labels, wherein the coil of a transmitter circuit is connected in series with a capacitor in order to obtain a resonance circuit with a predetermined resonance frequency.
In vorteilhafter Weise läßt sich das erfindungsgemäße Verfahren auch auf eine als Transceiver arbeitende elektromagnetische Sensoranlage anwenden.The method according to the invention can also advantageously be applied to an electromagnetic sensor system operating as a transceiver.
Vorzugsweise wird eine Resonanzfrequenz von 58 kHz eingestellt. Ein Kondensator genau abgestimmter Größe wird zu der Wicklung der Sendespule in Serie geschaltet. Im Kondensator ergibt sich ungefähr eine Resonanzspannung von ca. 50 - 400 Vpp. Dadurch läßt sich ein ausreichend großes magnetisches Feld erzeugen, so daß die Anlage für die AM-Technik eingesetzt werden kann. Die Empfängerspulen haben ohnehin einen Eingangswiderstand von 1 bis 24 Ohm, so daß diese Spulen direkt oder indirekt an den Schaltkreis der verwendeten AM- Elektronik angeschlossen werden können, um somit die vom Etikett ausgehende Resonanzfrequenz von 58 kHz zu empfangen.A resonance frequency of 58 kHz is preferably set. A precisely sized capacitor is connected in series with the winding of the transmitter coil. The capacitor has a resonance voltage of approx. 50 - 400 Vpp. This allows a sufficiently large magnetic field to be generated so that the system can be used for AM technology. The receiver coils have an input resistance of 1 to 24 ohms anyway, so that these coils can be connected directly or indirectly to the circuit of the AM electronics used, in order to receive the resonance frequency of 58 kHz from the label.
Die erfindungsgemäß umgerüsteten Sensoreinheiten können jeweils paarweise bei Durchgangsbreiten von 0,7 bis 1 ,2 Metern zur Erfassung von AM-Etiketten eingesetzt werden. Dabei ist die Umrüstung außerordentlich wirtschaftlich und die Gesamtlösung eine Low-Cost-Anwendung. Natürlich können auch mehrere Antennen parallel zur Erzeugung mehrerer Durchgänge angeordnet werden. Hierzu sind dann ergänzend weitere AM-Sende-/Empfangselektronikbaugruppen erforderlich. Die üblicherweise im Bereich Unterhaltungselektronik, Video/Radio, CD, Kassetten und dergleichen eingesetzten EM-Systeme müssen nicht einmal von ihren festen Installationspunkten bewegt werden. Durch die Erfindung werden erhebliche wirtschaftliche Vorteile erzielt, da große Umbauten vermieden werden.The sensor units converted according to the invention can each be used in pairs with passage widths of 0.7 to 1.2 meters for the detection of AM labels. The conversion is extremely economical and the overall solution is a low-cost application. Of course, multiple antennas can also be arranged in parallel to create multiple passes. Additional AM transmitter / receiver electronics modules are then required for this. The EM systems usually used in the field of consumer electronics, video / radio, CD, cassettes and the like do not even have to be moved from their fixed installation points. Considerable economic advantages are achieved by the invention since large conversions are avoided.
Gegenstand der Erfindung ist auch eine verfahrensgemäß umgebaute Sensoranlage für akustomagnetische Etiketten, die durch Erzeugung eines Resonanzschwingkreises mit einer der Spulen durch Reihenschaltung mit einem Kondensator aus einer EM-Sensoranlage umgerüstet worden sind.The invention also relates to a sensor system for acustomagnetic labels which has been converted in accordance with the method and which has been converted from an EM sensor system by generating a resonant circuit with one of the coils by series connection with a capacitor.
Gemäß eines weiteren Vorschlags der Erfindung wird vorgeschlagen ein Verfahren zur Umrüstung einer auf Radiofrequenz-Basis arbeitenden Sensoranlage für Radiofrequenz-Warensicherungsetiketten zur einer auf akustomagnetischer Basis arbeitenden Sensoranlage für akustomagnetische Warensicherungsetiketten, wobei im Bereich eines etikettenseitigen Radiofrequenz-Schwingkreises ein akustomagnetisch detektierbares Bauelement integriert wird und in eine akustomagnetische Sende-/Empfangsanlage eine Spule für die Sendung/den Empfang einer Radiofrequenz eingesetzt wird.According to a further proposal of the invention, a method is proposed for converting a sensor system for radio frequency security tags working on a radio frequency basis to a sensor system for acustomagnetic security tags working on an acustomagnetic basis, an acustomagnetically detectable component being integrated in and in the area of a radio frequency oscillating circuit on the label side an acustomagnetic transmitter / receiver system uses a coil for the transmission / reception of a radio frequency.
Radiofrequenzetiketten bestehen aus an sich bekannten Hartetiketten in Form einer Scheibe mit rundem oder im wesentlichen rechteckigen Querschnitt. In diese Elemente ist wenigstens ein Radiofrequenz-Schwingkreis eingesetzt. Darüber hinaus weisen diese Elemente ein mechanisch und/oder elektronisch, elektromechanisch oder sonstwie betätigbares Schloß auf, welches eine eingesteckte Nadel bis zur Entriegelung festhält. Am anderen Ende der Nadel befindet sich ein Nadelkopf. Zur Nutzung dieser an sich bekannten Etiketten werden beispielsweise bei Textilien die Nadel das zu sichernde Gut durchragend an diesem angeordnet, so daß einseitig der Nadelkopf gegen Durchrutschen sichert, auf der anderen Seite die Nadel in dem Schloß des Schwingkreisträgers verriegelt wird. Nach dem ordnungsgemäßen Erwerb des gesicherten Gutes wird das Schloß üblicherweise an der Kasse entriegelt und sowohl der Schwingkopfträger als auch der Nadelkopf mit Nadel werden entnommen. Geschieht dies nicht, wird der Schwingkreis beim Verlassen des Kassenbereiches detektiert und ein Alarm ausgelöst. Gemäß der Erfindung kann beispielsweise ein akustomagnetisch detektierbarer mit Spulendraht umwickelter Ferritstab entweder in den Schwingkopfträger oder in den Nadelkopf eingesetzt werden. Dieses Einsetzen kann beispielsweise durch einfaches Einkleben oder dergleichen erfolgen.Radio frequency labels consist of hard labels known per se in the form of a disc with a round or essentially rectangular cross section. At least one radio frequency resonant circuit is inserted into these elements. In addition, these elements have a mechanically and / or electronically, electromechanically or otherwise operable lock, which holds an inserted needle until it is unlocked. At the other end of the needle is a needle head. To use these labels, which are known per se, the needle, for example in the case of textiles, is arranged so as to protrude so that the needle head secures against slipping, on the other side the needle is locked in the lock of the resonant circuit carrier. After the secured goods have been properly purchased, the lock is usually unlocked at the cash register and both the oscillating head carrier and the needle head with needle are removed. If this does not happen, the resonant circuit is detected when the checkout area is exited and an alarm is triggered. According to the invention, for example, an acustomagnetically detectable ferrite rod wound with coil wire can be inserted either in the oscillating head carrier or in the needle head. This insertion can be done, for example, simply by gluing or the like.
Die Ferritstäbe oder auch NDA-Labels können je nach gewünschter Detektionsleistung in unterschiedlichen Größen verwendet werden, so daß gegebenenfalls die Nadelköpfe angepaßt werden müssen. Diese Nadelköpfe bestehen üblicherweise aus bruchfesten Kunststoffen mit offener Halbschale, in deren Zentrum die Nadel angeordnet ist. In dieser Halbschale können die Ferritoder NDA-Etiketten eingeklebt, gegebenenfalls eingegossen werden.The ferrite rods or NDA labels can be used in different sizes depending on the desired detection performance, so that the needle heads may have to be adapted. These needle heads usually consist of unbreakable plastics with an open half-shell, in the center of which the needle is arranged. The ferrite or NDA labels can be glued into this half-shell, if necessary cast in.
In vorteilhafter Weise werden im Bereich der Kassenausgänge AM-Antennen aufgestellt, in welche die Radiofrequenzspulen zur Detektion der Radiofrequenzschwingkreise eingerüstet werden. Auf diese Weise können kombiniert beide Technologien genutzt werden. Dies ist besonders vorteilhaft für die wirtschaftliche Einführung alternativer Technologien. Während Radiofrequenz- Technologie umfangreich im Einsatz ist, die Etiketten aber sehr teuer und sehr unhandlich sind und auch in der Wiederbeschaffung sehr aufwendig sind, werden viele Kaufhausbetreiber eine Umrüstung auf die wesentlich günstigere AM- Technologie bevorzugen, müssen aber aufgrund des erfindungsgemäßen Vorschlages keine schlagartige Umstellung durchführen. Es können die vorhandenen Radiofrequenzetiketten weiter genutzt werden und zwar sogar in radiofrequenzgesicherten Bereichen, während zugleich dieselben Etiketten in AM- gesicherten Bereichen wirksam sind, da sie erfindungsgemäß ergänzt wurden.In an advantageous manner, AM antennas are set up in the area of the till exits, into which the radio frequency coils are installed for the detection of the radio frequency resonant circuits. In this way, both technologies can be used in combination. This is particularly advantageous for the economical introduction of alternative technologies. While radio frequency technology is used extensively, but the labels are very expensive and very unwieldy and are also very expensive to replace, many department store operators will prefer to switch to the much cheaper AM technology, but do not have to make a sudden change due to the proposal according to the invention carry out. The existing radio frequency labels can continue to be used, even in radio frequency-secured areas, while at the same time the same labels are effective in AM-secured areas since they have been supplemented according to the invention.
Die RF-Sende-/Empfangsantennen und die Elektronik werden in AM-Panels integriert, wobei auch Sandwichbauweise denkbar ist, da die Antennenwicklungen der RF-Technik in der Regel einfach in die AM-Antennen zu montieren sind. Drahtstärken von 0,5 bis 1 mm2 Kupferlackdraht sind üblich.The RF transmit / receive antennas and the electronics are integrated in AM panels, whereby a sandwich construction is also conceivable, since the antenna windings of RF technology are generally easy to install in the AM antennas. Wire thicknesses of 0.5 to 1 mm 2 enamelled copper wire are common.
Die Erfindung löst auf wirtschaftliche Weise die Umrüstung herkömmlicher Warensicherungstechnologien auf wirtschaftlich moderne Technologien. The invention economically resolves the conversion of conventional goods security technologies to economically modern technologies.

Claims

Pa te n ta n s p rü c h e Pa te n ta nsp rue
1. Verfahren zur Umrüstung einer auf elektromagnetischer Basis arbeitenden Sensoranlage für elektromagnetische Warensicherungsetiketten zu einer auf akustomagnetischer Basis arbeitenden Sensoranlage für Warensicherungsetiketten, wobei die Spule eines Senderschaltkreises mit einem Kondensator in Reihe geschaltet wird, um einen Resonanzschaltkreis mit vorgegebener Resonanzfrequenz zu erhalten.1. Method for converting a sensor system for electromagnetic security tags working on an electromagnetic basis to a sensor system for security tags working on an acustomagnetic basis, the coil of a transmitter circuit being connected in series with a capacitor in order to obtain a resonance circuit with a predetermined resonance frequency.
2 . Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß ein Resonanzschaltkreis mit einer Resonanzfrequenz von 58 kHz erzeugt wird.2nd Method according to Claim 1, characterized in that a resonance circuit with a resonance frequency of 58 kHz is generated.
3 . Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß bei Umrüstung einer auf elektromagnetischer Basis als Transceiver arbeitenden Sensoranlage die Spule des Senderschaltkreises des Transceivers mit einem Kondensator in Reihe geschaltet wird.3rd Method according to one of the preceding claims, characterized in that when converting a sensor system operating on an electromagnetic basis as a transceiver, the coil of the transmitter circuit of the transceiver is connected in series with a capacitor.
4 . Verfahren zur Umrüstung einer auf Radiofrequenz-Basis arbeitenden Sensoranlage für Radiofrequenz-Warensicherungsetiketten zur einer auf akustomagnetischer Basis arbeitenden Sensoranlage für akustomagnetische Warensicherungsetiketten, wobei im Bereich eines etikettenseitigen Radiofrequenz-Schwingkreises ein akustomagnetisch detektierbares Bauelement integriert wird und in eine akustomagnetische Sende- /Empfangsanlage eine Spule für die Sendung/den Empfang einer Radiofrequenz eingesetzt wird.4th Method for converting a sensor system for radio frequency security tags working on a radio frequency basis to a sensor system for acustomagnetic security tags working on an acustomagnetic basis, an acustomagnetically detectable component being integrated in the area of a label-side radio frequency oscillating circuit and an acustomagnetic coil for transmitting / receiving system the transmission / reception of a radio frequency is used.
5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß das akustomagnetisch detektierbare Element ein spulenumwickelter Ferritstab ist.5. The method according to claim 4, characterized in that the acustomagnetic detectable element is a coil-wound ferrite rod.
6. Verfahren nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, daß das akustomagnetisch detektierbare Warensicherungselement ein NDA- Etikett ist. Verfahren nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß das Ferrit-/Spulenelement in den Nadelkopf eines Radiofrequenz-Etikettes eingesetzt ist. 6. The method according to any one of claims 4 or 5, characterized in that the acustomagnetic detectable security element is an NDA label. Method according to one of claims 4 to 6, characterized in that the ferrite / coil element is inserted into the needle head of a radio frequency label.
PCT/EP2000/001732 1999-03-01 2000-03-01 Method for converting sensor systems for security labels on goods WO2000052637A1 (en)

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DE1999108879 DE19908879A1 (en) 1999-03-01 1999-03-01 Process for retrofitting sensor systems for security tags
DE19908879.9 1999-03-01

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GB2390509A (en) * 2002-07-03 2004-01-07 Marconi Information Systems Lt Smart label reader interfacing device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4510489A (en) * 1982-04-29 1985-04-09 Allied Corporation Surveillance system having magnetomechanical marker
US4647917A (en) * 1984-03-26 1987-03-03 Allied Corporation Article control system having coded magnetomechanical marker
US5065137A (en) * 1990-08-03 1991-11-12 Security Tag Systems, Inc. Magnetically-coupled, two-resonant-circuit, frequency-division tag
US5095309A (en) * 1989-05-26 1992-03-10 Trovan Limited Method and apparatus for modulating and detecting a subcarrier signal for an inductively coupled transponder
EP0608961A1 (en) * 1993-01-28 1994-08-03 N.V. Nederlandsche Apparatenfabriek NEDAP Detection system for detecting resonance effects of a label in a frequency-swept interrogation field by means of single sideband demodulation and method for carrying out such detection
US5703565A (en) * 1996-02-23 1997-12-30 Sensormatic Electronics Corporation Transformer coupled switching transmitter for electronic article surveillance system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4510489A (en) * 1982-04-29 1985-04-09 Allied Corporation Surveillance system having magnetomechanical marker
US4647917A (en) * 1984-03-26 1987-03-03 Allied Corporation Article control system having coded magnetomechanical marker
US5095309A (en) * 1989-05-26 1992-03-10 Trovan Limited Method and apparatus for modulating and detecting a subcarrier signal for an inductively coupled transponder
US5065137A (en) * 1990-08-03 1991-11-12 Security Tag Systems, Inc. Magnetically-coupled, two-resonant-circuit, frequency-division tag
EP0608961A1 (en) * 1993-01-28 1994-08-03 N.V. Nederlandsche Apparatenfabriek NEDAP Detection system for detecting resonance effects of a label in a frequency-swept interrogation field by means of single sideband demodulation and method for carrying out such detection
US5703565A (en) * 1996-02-23 1997-12-30 Sensormatic Electronics Corporation Transformer coupled switching transmitter for electronic article surveillance system

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