WO1999048071A1 - Etiquettes a radiofrequence et procede d'accord associe - Google Patents

Etiquettes a radiofrequence et procede d'accord associe Download PDF

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Publication number
WO1999048071A1
WO1999048071A1 PCT/EP1999/001748 EP9901748W WO9948071A1 WO 1999048071 A1 WO1999048071 A1 WO 1999048071A1 EP 9901748 W EP9901748 W EP 9901748W WO 9948071 A1 WO9948071 A1 WO 9948071A1
Authority
WO
WIPO (PCT)
Prior art keywords
frequency
radio frequency
labels
label
coil
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.)
Ceased
Application number
PCT/EP1999/001748
Other languages
German (de)
English (en)
Inventor
Georg Siegel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sentronik GmbH
Original Assignee
Sentronik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sentronik GmbH filed Critical Sentronik GmbH
Publication of WO1999048071A1 publication Critical patent/WO1999048071A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/0672—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with resonating marks
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
    • G06K19/0726—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs the arrangement including a circuit for tuning the resonance frequency of an antenna on the record carrier
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G08B13/2417—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 having a radio frequency identification chip
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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

Definitions

  • the invention relates to a method for tuning radio frequency labels, radio frequency labels for attachment to objects to be identified with a resonance air coil and a capacitor for generating the resonant circuit resonance, which form a parallel resonant circuit, and the use of radio frequency labels with a precisely and stably tuned to a predetermined value Resonance frequency and a system consisting of radio frequency labels and transmitting / receiving devices to detect the labels
  • Radio frequency security elements that can be detected by transmitting / receiving devices are known and are often used, for example, for security against theft in department stores and shops. For this purpose, frequencies of 8,200 MHz, 3,250 MHz and 2,000 MHz were set up for such detection systems. These known elements and detection systems based thereon have a number of serious disadvantages. Firstly, the coils applied to these elements can only be produced with very large frequency tolerances with reasonable effort. This tolerance range reaches up to 40% with 8.2 MHz radio frequency elements, for example in other words, that radio frequency elements that are manufactured for 8.2 MHz can actually have a resonance frequency of approximately 5 to 11.5 MHz.
  • the transmitting / receiving devices used for their detection when they are at a target frequency of 8.2 MHz are set up, can only detect resonance frequencies of approximately 7.4 to 8.6 MHz, the large proportions of the elements lying outside of these tolerance ranges are no longer recognized or not reliably recognized. This leads to a large one Error rate, for example of anti-theft systems.
  • the radio frequency security elements are complex and, above all, large components. So-called labels, ie self-adhesive paper labels, are only available for the 8.2 MHz working range.
  • Aluminum is used as the base material for their production; the windings for producing a coil are formed by etching and / or gluing and layering the aluminum on a carrier material.
  • the capacitor required to generate the resonant circuit resonance is also applied. Apart from the manufacturing effort, the large frequency tolerance ranges of up to ⁇ 40% result. For systems with 2 MHz, 3.25 MHz and 4.75 MHz, only so-called "tags" are known as security elements. This is a plastic disc in a circular or rectangular shape with diameters or edge lengths of 5 to 10 cm. Loose spools, which are inserted into a plastic cover and offered as soft labels, are also available. The resonance coils are usually made of insulated copper / or aluminum wires and tuned to the necessary frequency with a conventional capacitor that is soldered on. In order to keep production economical, the tolerance range is similar to that for the 8.2 MHz systems.
  • the invention is based on the task of coordinating and stabilizing the resonance frequency of radio frequency labels with target frequencies with a very narrow tolerance range.
  • the resonance frequency is tuned and stabilized within narrow limits by applying a section of a ferrite foil to at least some of the coil turns, so that the resonance frequency of the label after the actual value measurement is changed by applying a section of a ferrite foil to at least part of the coil turns so that it corresponds to the predetermined value.
  • Such a method has the advantage that flat radio frequency labels can be produced inexpensively without having to pay attention to the exact setting of the predetermined resonance frequencies, which can only be achieved with great effort, if at all.
  • These radio frequency labels produced in an inventive manner are then controlled by measured values
  • Application of a section of a ferrite foil to at least some of the coil turns is changed so that they correspond to the predetermined value. It is important that the film is flexible.
  • This method has the advantage that the predefined value can be set in a precisely controlled manner and, moreover, this set value has great stability, that is to say that the value which has been coordinated does not drift over time or during use.
  • a ferrite foil with copper cladding on the back is applied, while unclad ferrite foil is applied to reduce the frequency.
  • the invention makes it possible for the first time to produce small and inexpensive labels for all radio frequency ranges and to use them extensively, thereby making it possible to produce radio frequency labels in an economical manner that meet the technical requirements for goods security.
  • one with a tunable wobble generator is used as the frequency measuring device.
  • a free-running oscillator can be used for frequency measurement.
  • This device is not only particularly suitable for measuring the resonance frequency, but also offers very favorable conditions for the measurement-monitored and controlled determination of the suitable dimension of the film section and, above all, the optimal position of the section on the coil winding. This is determined by placing a film section on the coil turns and determining the suitable position by moving the section on the label, in which the application of the section leads to the tuning of the radio frequency label to the predetermined resonance frequency. If this cannot be adjusted with the dimensions of the film section used, the dimensions must be adjusted accordingly.
  • This tuning process makes it possible to produce labels that are tuned very precisely to any frequencies.
  • the radio frequency labels according to the prior art were at best suitable to be detectable by transmitter / receiver devices if they were within the narrow tolerance range around the predetermined frequency value, the use of a radio frequency label according to the invention allows a completely new quality of detection and detection reliability.
  • the tolerance range in the manufacture of the radio frequency labels of ⁇ 40% means that, for example at a predetermined resonance frequency of 8.2 MHz, the labels can be in a frequency range of approximately 5 to 11.5 MHz.
  • Wobbeigen generator has a resonance frequency of 7.885 MHz. Since the frequency for
  • the film is a 0.2 mm thick FPC (Ferrite Polymer Composite) film available on the market.
  • Section of the FPC film was placed on the coil turns and from the outside
  • Radio frequency label the resonance frequency of which described above
  • Measuring instrument was determined to be 8.32 MHz. In this case, again
  • Possibilities of being able to fully utilize the radio frequency labels which are very precisely and stably tuned to predetermined resonance frequencies are advantageously used in a system together with transceivers whose frequency range can be varied. In this way it is possible to preferably automatically run the narrowly spaced allocation system, which is only spread by a few kHz, and the detected system Determine resonance frequency precisely and with little effort.
  • the detected resonance frequency can be automatically assigned to the cataloged properties or combinations of properties, which provides a differentiated recognition option.
  • the method according to the invention leads to the production of radio frequency labels according to the invention, which can be produced inexpensively in large quantities and yet can be used very extensively.
  • the radio frequency labels comprise coils and capacitors, which are attached to a paper-like carrier and form an oscillating circuit, and moreover can be tuned very precisely with regard to the frequency.
  • the process can also be automated for individual frequencies without any problems.
  • the labels are easy to handle and are therefore also ideal for securing bulk items.
  • 1 is a plan view of an embodiment of a radio frequency
  • Fig. 2 is a plan view of an alternative embodiment of a
  • a coil 2 is applied and connected to the two coil ends to form a resonant circuit by connecting a capacitor 3, which is also attached.
  • a piece of ferrite foil 4 is applied to the position determined by measurement for frequency tuning.
  • the result is a simply constructed radio frequency label, either as a paper label or as a foil label, preferably the non-coated one Back is self-adhesive.
  • the exemplary embodiments 1 and 2 differ in terms of the coil shape.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Soft Magnetic Materials (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

L'invention concerne un procédé qui permet, avec une plage de tolérance très étroite, d'accorder et de stabiliser la fréquence de résonance d'étiquettes HF sur des fréquences cibles. Le procédé consiste à accorder et à stabiliser la fréquence de résonance desdites étiquettes HF dans des limites étroites en appliquant un morceau de feuille de ferrite sur au moins une partie des spires de la bobine. A cet effet, après avoir mesuré la valeur réelle, on modifie la fréquence de résonance en appliquant le morceau de feuille de ferrite sur au moins une partie des spires de la bobine, de façon à faire correspondre ladite fréquence à la valeur prescrite.
PCT/EP1999/001748 1998-03-18 1999-03-17 Etiquettes a radiofrequence et procede d'accord associe Ceased WO1999048071A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29804579.6 1998-03-18
DE29804579U DE29804579U1 (de) 1998-03-18 1998-03-18 Radiofrequenzetikett mit kupferbeschichteter Ferrit-Folie

Publications (1)

Publication Number Publication Date
WO1999048071A1 true WO1999048071A1 (fr) 1999-09-23

Family

ID=8054149

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/001748 Ceased WO1999048071A1 (fr) 1998-03-18 1999-03-17 Etiquettes a radiofrequence et procede d'accord associe

Country Status (2)

Country Link
DE (1) DE29804579U1 (fr)
WO (1) WO1999048071A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001073685A1 (fr) * 2000-03-28 2001-10-04 Lucatron Ag Etiquette rfid dotee d'un element permettant de regler la frequence de resonance
US6951621B2 (en) 2000-03-31 2005-10-04 Rafsec Oy Method for forming a product sensor, and a product sensor
US7066393B2 (en) 2001-05-31 2006-06-27 Rafsec Oy Smart label and a smart label web
US7152803B2 (en) 2001-12-21 2006-12-26 Upm Rafsec Oy Smart label web and a method for its manufacture
US7199456B2 (en) 2001-07-04 2007-04-03 Rafsec Oy Injection moulded product and a method for its manufacture
US7244332B2 (en) 2000-12-11 2007-07-17 Rafsec Oy Smart label web and a method for its manufacture
EP1973055B1 (fr) * 2007-03-19 2009-06-24 SimonsVoss Technologies AG Unité de lecture et méthode pour détection à faible énergie d'un transpondeur
EP2150924B1 (fr) * 2007-06-06 2016-12-07 bielomatik Leuze GmbH + Co. KG Procédé de réalisation d'une antenne auto-collante pour système RFID

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10204884A1 (de) * 2002-02-06 2003-08-14 Schreiner Gmbh & Co Kg Transponderetikett
DE102005049924B8 (de) * 2004-10-28 2008-07-24 Pro-Micron Gmbh & Co. Kg Modular Systems Transpondersystem

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3493955A (en) * 1968-04-17 1970-02-03 Monere Corp Method and apparatus for detecting the unauthorized movement of articles
US5276431A (en) * 1992-04-29 1994-01-04 Checkpoint Systems, Inc. Security tag for use with article having inherent capacitance
WO1999008245A1 (fr) * 1997-08-08 1999-02-18 Ird A/S Etiquettes polymeres resonnant sous l'effet de la frequence radioelectrique et procede de fabrication

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1235362B (it) 1989-06-14 1992-06-30 Necchi Modulare Musica Custodia antifurto,in particolare per compact disc,e simili

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3493955A (en) * 1968-04-17 1970-02-03 Monere Corp Method and apparatus for detecting the unauthorized movement of articles
US5276431A (en) * 1992-04-29 1994-01-04 Checkpoint Systems, Inc. Security tag for use with article having inherent capacitance
WO1999008245A1 (fr) * 1997-08-08 1999-02-18 Ird A/S Etiquettes polymeres resonnant sous l'effet de la frequence radioelectrique et procede de fabrication

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001073685A1 (fr) * 2000-03-28 2001-10-04 Lucatron Ag Etiquette rfid dotee d'un element permettant de regler la frequence de resonance
US6796508B2 (en) 2000-03-28 2004-09-28 Lucatron Ag Rfid-label with an element for regulating the resonance frequency
US6951621B2 (en) 2000-03-31 2005-10-04 Rafsec Oy Method for forming a product sensor, and a product sensor
US7244332B2 (en) 2000-12-11 2007-07-17 Rafsec Oy Smart label web and a method for its manufacture
US7066393B2 (en) 2001-05-31 2006-06-27 Rafsec Oy Smart label and a smart label web
US7199456B2 (en) 2001-07-04 2007-04-03 Rafsec Oy Injection moulded product and a method for its manufacture
US7152803B2 (en) 2001-12-21 2006-12-26 Upm Rafsec Oy Smart label web and a method for its manufacture
EP1973055B1 (fr) * 2007-03-19 2009-06-24 SimonsVoss Technologies AG Unité de lecture et méthode pour détection à faible énergie d'un transpondeur
EP2150924B1 (fr) * 2007-06-06 2016-12-07 bielomatik Leuze GmbH + Co. KG Procédé de réalisation d'une antenne auto-collante pour système RFID

Also Published As

Publication number Publication date
DE29804579U1 (de) 1998-11-26

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