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WO1996027844A2 - Repondeur pour systemes d'interrogation electromagnetiques - Google Patents

Repondeur pour systemes d'interrogation electromagnetiques Download PDF

Info

Publication number
WO1996027844A2
WO1996027844A2 PCT/EP1996/000693 EP9600693W WO9627844A2 WO 1996027844 A2 WO1996027844 A2 WO 1996027844A2 EP 9600693 W EP9600693 W EP 9600693W WO 9627844 A2 WO9627844 A2 WO 9627844A2
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
arrangement according
arrangement
transponder
auxiliary
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/EP1996/000693
Other languages
German (de)
English (en)
Other versions
WO1996027844A3 (fr
Inventor
Arthur KÖHLER
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to EP96904824A priority Critical patent/EP0760143A1/fr
Priority to AU48785/96A priority patent/AU4878596A/en
Publication of WO1996027844A2 publication Critical patent/WO1996027844A2/fr
Publication of WO1996027844A3 publication Critical patent/WO1996027844A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G06K19/0775—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card arrangements for connecting the integrated circuit to the antenna
    • G06K19/07756—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card arrangements for connecting the integrated circuit to the antenna the connection being non-galvanic, e.g. capacitive
    • 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
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card

Definitions

  • the invention relates to a transponder arrangement for electromagnetic interrogation systems.
  • electromagnetic interrogation systems essentially comprise an interrogation device and any number of transponders per se, the interrogation device and transponder interacting with one another via an electromagnetic near field.
  • the interrogation device contains a transmitter and a receiver along with devices for displaying and processing information content and an antenna arrangement.
  • the transmitter emits alternating field energy via the antenna, which may be emitted by a existing transponder is added.
  • the transponder in turn contains a receiver, a transmitter, a memory and a modulation device in order to impress information on the radio-frequency signal of the transmitter, and an antenna arrangement.
  • the query process runs e.g. as follows: If the interrogation device (antenna) and transponder are close enough to one another, then alternating field energy is transmitted contactlessly from the transmission antenna of the interrogation device to the transponder antenna. The energy received activates both the receiver and the transmitter, modulator and information store in the transponder. The transponder emits an alternating field modulated with a stored information via its antenna, which is picked up and processed by the interrogator-receiver.
  • transponders are therefore usually enclosed in a suitably robust housing, so that direct access to the transponder electronics is excluded.
  • transponders for example in the form of a credit card format or glass ampoule.
  • An increased transmission power in the interrogation device can also impair the sensitivity of the receiver located therein, which runs counter to the goal of the desired larger transmission range.
  • a transponder arrangement for the manufacturing process of a product for example a vehicle, in which a simple transponder remains permanently in the product.
  • the transponder can contactlessly exchange data with a reader.
  • the communication range can be increased by a complex auxiliary device that is only used temporarily.
  • the auxiliary device forms a conversion station between inductive coupling with the transponder and optical or microwave coupling with the reading device.
  • the object of the present invention is to provide a transponder arrangement which permanently and reliably enables a greater range of the interrogation systems.
  • the invention is described in claim 1.
  • the subclaims contain advantageous refinements and developments of the invention.
  • the requirements for small dimensions of a transponder carrier body and for strong interaction of the antenna arrangement with the electromagnetic alternating field of the interrogator can be optimized separately. Due to the permissibility of small dimensions of the carrier body, universal types of transponders can be used for a large number of applications. Due to the fact that the carrier body itself contains a transmit / receive coil of small dimensions, which is coupled to the auxiliary antenna of the antenna arrangement via a coupling coil, transponders can also be operated in the arrangement, which can also be used independently . The arrangement according to the invention then results in a substantially larger query area of the query systems compared to the independent use of such transponders.
  • the antenna arrangement coupled to the transponder works passively and thus functions without an energy supply.
  • this makes the transponder arrangement less susceptible to technical defects and, in cases where the transponder contains externally removable information about improper use, for example of a vehicle, offers protection against preventing the possibility of being queried by disconnecting a power supply .
  • the close transformer coupling of the coupling coil of the auxiliary device to the transmitting / receiving coil of the transponder device is also essential.
  • transformative coupling means that the magnetic flux through one of the two coil surfaces is also effective at least 50% in the coil surface of the other coil.
  • the carrier body and the antenna can advantageously be spatially spaced apart.
  • metallic components of an object carrying the transponder arrangement which are primarily used for other functions, e.g. are provided as supporting housing parts.
  • FIG. 1 a principle of a query system
  • FIG. 2 an interrogation system with a transponder arrangement according to the invention
  • FIG. 3 shows an embodiment of a transponder arrangement
  • FIG. 4 shows a further embodiment
  • FIG. 5 shows an embodiment with an auxiliary antenna
  • an interrogation device G transmits an electromagnetic field via a device antenna GA, which is indicated by broken lines and wavefronts.
  • a device antenna GA which is indicated by broken lines and wavefronts.
  • an object for example a piece of luggage, a vehicle, etc.
  • the transponder arrangement T absorbs energy from the electromagnetic field of the interrogation device via its own antenna arrangement.
  • the transponder arrangement essentially also contains a receiver, a transmitter and an information memory. Control electronics, a processor, etc. can also be included in more complex designs.
  • the transponder arrangement is preferably purely field-fed and does not have its own energy supply.
  • the electronic components of the transponder arrangement are then activated only when energy is absorbed from the electromagnetic field of the interrogation device G. After activation of the transponder electronics, this causes the transmission of an electromagnetic field via the transponder transmitter and the antenna arrangement, which is indicated in FIG. 1 by wavefronts and arrows in solid lines and which in turn is transmitted by the device antenna GA of the device question device G is recorded and evaluated in the interrogator.
  • the transmission frequency of the interrogation device G is different from the transmission frequency of the transponder arrangement T.
  • the interrogation signal of the interrogation device can be modulated or unmodulated.
  • the response signal emitted by the transponder arrangement is preferably modulated with information from a non-volatile information memory of the transponder arrangement.
  • the transponder arrangement preferably has small dimensions and is in a carrier body, e.g. inserted in check card format or as a hermetically sealed glass ampoule. Due to the associated small dimensions of the antenna arrangement, the coupling to the electromagnetic field emitted by the interrogation device is weak and the range of the interrogation system is therefore short.
  • the interrogation system outlined is provided in the object O with a transponder arrangement according to the invention, which has a transponder carrier body TK and a large-area frame antenna A separated from it, which are coupled to one another, e.g. via a connecting line L and a coupling coil KS.
  • the antenna A is not subject to the spatial restrictions of the carrier body T and can therefore be designed for a stronger coupling to the electromagnetic alternating field of the interrogation device. As a result of the stronger coupling to the interrogation field, sufficient energy is available to operate the transponder arrangement, even at a greater distance from the interrogation device.
  • the transponder body contains at least one receiver, one transmitter, one information store, and one transmit-receive coil, which is coupled to the coupling coil KS by means of a transformer.
  • the antenna A is advantageously several times larger than the carrier body TK in at least one dimension.
  • Advantageous embodiments of antenna A provide a magnetic antenna such as an air-frame antenna or a ferrite antenna.
  • a loop antenna can be used - 8th -
  • Reinforcement or directivity of the electromagnetic field can be equipped with ferromagnetic material.
  • a transponder body TK which, in addition to the transmitter, receiver and information store, also contains a transceiver coil connected to the transmitter and receiver.
  • the antenna arrangement consists of the frame antenna A which is coupled to the external electromagnetic field, a coupling coil KS connected to it and the transmission / reception coil in the carrier body TK, which is not shown separately, and which couples with the coupling coil KS in a transformative manner is.
  • the coupling coil KS is wound directly onto the carrier body TK. Between antenna A and coupling coil L can in turn be one
  • Connecting line L can be inserted so that antenna A and carrier body TK can be arranged at a spatial distance.
  • a universal transponder body can be used, which can also be used independently as a transponder arrangement in other applications with lower range requirements, in which case the internal transmit / receive coil serves as an antenna Coupling to an electromagnetic field is used.
  • the effective area of the antenna A is significantly larger than that of the internal transmit-receive coil.
  • the connecting line can advantageously be in a form that does not couple with an electromagnetic field, - 9 -
  • a query can be made on the line wires themselves, even without antenna A, if the conductors are further apart and form a closed current loop.
  • Antenna, connecting line and coupling coil can be tuned for resonance with an operating frequency of the interrogation system or can also be aperiodic to the operating frequencies.
  • a first frequency for transmission from the interrogation device to the transponder and a second frequency for transmission in the opposite direction occur as operating frequencies.
  • passive devices such as filters for the receiving or transmitting frequency of the interrogation system can be connected to this connecting line in order to achieve an improved function. Furthermore, by feeding a signal into the connecting line, the coupling coil or the carrier body via switches or couplers, the information content of the information memory can be changed and / or queried by devices on the object.
  • the means required here are no longer to be seen as part of the passive antenna arrangement in the sense of the invention and do not impair the function of the transponder arrangement, which is independent of a power supply. In the case of FIG.
  • the coupling coil including the transponder body is surrounded by an electromagnetic shielding sheath H made of ferromagnetic and / or electrically conductive material, thereby ensuring that no disturbing electromagnetic fields can act on the electronics of the transponder arrangement.
  • the indirect influence of such interference fields via antenna A can be suppressed by filter measures in the antenna arrangement.
  • the shielding sheath H is shown in FIG. 4 drawn partially cut open to show the inner coupling coil KS. In the example, this is not wound directly onto the carrier body Tk, but rather onto a separate hollow cylindrical coil former SK in which the carrier body TK can be inserted. It can also be provided that the carrier body is removably arranged in the coil body.
  • the coil can also form a hollow cylindrical receiving space for the carrier body in a self-supporting manner.
  • the internal transmit / receive coil TS and the electronics E with receiver, transmitter and information memory are indicated in the carrier body.
  • FIG. 5 Another embodiment of the invention is shown in FIG. 5 shown.
  • the transponder body TK with coupling coil is located within a hollow metal frame R which is interrupted at a point U in its cross section.
  • a closed conductor loop as antenna A which is connected on the one hand to the coupling coil to the transponder and on the other hand is self-contained.
  • the conductor loop couples to the metal frame, which in turn acts as an auxiliary antenna.
  • the the cavity surrounding the conductor loop need not be in the shape of a rectangle as in FIG. 5, it can also be a ring, an oval, and the like, and the metal can have magnetic or non-magnetic properties, or the frame can be non-metallic.
  • the coupling coil to the transponder body is e.g. designed as a cylinder winding or flat winding, care being taken to ensure sufficient transformer coupling with the transceiver coil in the transponder body. It can be wound directly on the transponder body, as shown in FIG. 3, or be designed or arranged so that the transponder can be removed and e.g. is interchangeable with another, e.g. in the embodiment of FIG. 4th

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Near-Field Transmission Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

L'innovation proposée est un répondeur pour systèmes d'interrogation électromagnétiques qui, grâce à l'utilisation d'une antenne séparée de l'élément répondeur, assure un puissant couplage de l'interrogateur avec le champ d'interrogation électromagnétique et permet l'utilisation d'un élément répondeur de dimensions réduites. Le répondeur comprend un élément répondeur muni de sa propre bobine d'émetteur-récepteur, couplée avec une bobine de couplage, elle-même raccordée à l'antenne. L'invention permet d'accroître la portée de tels systèmes d'interrogation.
PCT/EP1996/000693 1995-03-07 1996-02-20 Repondeur pour systemes d'interrogation electromagnetiques Ceased WO1996027844A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP96904824A EP0760143A1 (fr) 1995-03-07 1996-02-20 Repondeur pour systemes d'interrogation electromagnetiques
AU48785/96A AU4878596A (en) 1995-03-07 1996-02-20 Transponder for electromagnetic interrogation systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19507721.0 1995-03-07
DE19507721A DE19507721C2 (de) 1995-03-07 1995-03-07 Transponderanordnung für elektromagnetische Abfragesysteme

Publications (2)

Publication Number Publication Date
WO1996027844A2 true WO1996027844A2 (fr) 1996-09-12
WO1996027844A3 WO1996027844A3 (fr) 1997-03-13

Family

ID=7755724

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/000693 Ceased WO1996027844A2 (fr) 1995-03-07 1996-02-20 Repondeur pour systemes d'interrogation electromagnetiques

Country Status (5)

Country Link
EP (1) EP0760143A1 (fr)
AU (1) AU4878596A (fr)
DE (1) DE19507721C2 (fr)
WO (1) WO1996027844A2 (fr)
ZA (1) ZA961802B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19630648A1 (de) * 1996-07-30 1998-02-05 Diehl Gmbh & Co Geldschein
DE19832628C2 (de) 1998-07-21 2000-10-12 Daimler Chrysler Ag Transponderanordnung
NL1017068C2 (nl) * 2001-01-10 2002-07-11 Nedap Nv Signaaltransponder voor CD- en DVD-dozen.
BR0209450A (pt) * 2001-05-03 2004-08-03 Ip And Innovation Company Hold Comunicação entre um receptor-transmissor e um interrogador
WO2003019478A1 (fr) * 2001-08-25 2003-03-06 John Wolfgang Halpern Systeme et procede de paiement combine pour reduire la congestion de vehicule dans les zones metropolitaines et sur les autoroutes
EP1308872A1 (fr) * 2001-10-24 2003-05-07 Datamars SA Système d'identification comprenant un interrogateur et un transpondeur
DE202011104773U1 (de) 2011-08-24 2011-12-16 Balluff Gmbh Objektidentifizierungssystem
DE102012023444A1 (de) * 2012-11-30 2014-06-05 Giesecke & Devrient Gmbh Tube Tag

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1505081A (en) * 1974-09-17 1978-03-22 Gb Sec Of State Environment System for the identification of a road vehicle travelling along a predetermined route
GB2180123B (en) * 1984-12-21 1989-01-18 Senezco Limited Transponder systems
US4903243A (en) * 1988-08-04 1990-02-20 Whistler Corporation Marine transponder system
NL8901836A (nl) * 1989-07-17 1991-02-18 Nedap Nv Voertuiglabel.
US5099252A (en) * 1989-12-08 1992-03-24 Larsen Electronics, Inc. Mobile cellular antenna system
SE500030C2 (sv) * 1990-05-14 1994-03-21 Bengt Henoch Förfarande för att lagra komplicerade produkters livsdata
US5376943A (en) * 1990-09-07 1994-12-27 Plessey Semiconductors Limited Moving vehicle transponder
NL9100176A (nl) * 1991-02-01 1992-03-02 Nedap Nv Antenne met transformator voor contactloze informatieoverdracht vanuit integrated circuit-kaart.
US5181975A (en) * 1991-03-27 1993-01-26 The Goodyear Tire & Rubber Company Integrated circuit transponder with coil antenna in a pneumatic tire for use in tire identification
FI95523C (fi) * 1993-11-30 1996-02-12 Idesco Oy Etäluettava tunnistinrakenne
US5491483A (en) * 1994-01-05 1996-02-13 Texas Instruments Incorporated Single loop transponder system and method
GB2288103B (en) * 1994-03-25 1998-02-25 Hughes Microelectronics Europa Through Metal RF coupler

Also Published As

Publication number Publication date
ZA961802B (en) 1996-09-04
AU4878596A (en) 1996-09-23
WO1996027844A3 (fr) 1997-03-13
DE19507721C2 (de) 1997-10-02
EP0760143A1 (fr) 1997-03-05
DE19507721A1 (de) 1996-09-12

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