DE102006061298A1 - Radio frequency identification reader antenna for inductive data communication, particularly for identification of vehicle key, is arranged on mother board, and has metallic barrier and electromagnetic coil - Google Patents
Radio frequency identification reader antenna for inductive data communication, particularly for identification of vehicle key, is arranged on mother board, and has metallic barrier and electromagnetic coil Download PDFInfo
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- DE102006061298A1 DE102006061298A1 DE102006061298A DE102006061298A DE102006061298A1 DE 102006061298 A1 DE102006061298 A1 DE 102006061298A1 DE 102006061298 A DE102006061298 A DE 102006061298A DE 102006061298 A DE102006061298 A DE 102006061298A DE 102006061298 A1 DE102006061298 A1 DE 102006061298A1
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- 230000001939 inductive effect Effects 0.000 title claims description 6
- 230000004888 barrier function Effects 0.000 title abstract 3
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910000859 α-Fe Inorganic materials 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 2
- 230000035699 permeability Effects 0.000 claims description 2
- 239000007858 starting material Substances 0.000 abstract 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 25
- 230000005672 electromagnetic field Effects 0.000 description 16
- 238000001746 injection moulding Methods 0.000 description 6
- 239000012811 non-conductive material Substances 0.000 description 5
- 229910052804 chromium Inorganic materials 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- 230000006698 induction Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/20—Means to switch the anti-theft system on or off
- B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
- B60R25/245—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user where the antenna reception area plays a role
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/04—Arrangements for transmitting signals characterised by the use of a wireless electrical link using magnetically coupled devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2216—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in interrogator/reader equipment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
- H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
- H01Q1/3241—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems particular used in keyless entry systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R2325/00—Indexing scheme relating to vehicle anti-theft devices
- B60R2325/10—Communication protocols, communication systems of vehicle anti-theft devices
- B60R2325/105—Radio frequency identification data [RFID]
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00944—Details of construction or manufacture
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/24—Inductive coupling
- H04B5/26—Inductive coupling using coils
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/77—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for interrogation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Security & Cryptography (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Signal Processing (AREA)
- Lock And Its Accessories (AREA)
Abstract
Description
Die Erfindung betrifft Antenne (Lesespule) eines RFID-Lesegeräts mit mindestens einer Spule nach den Oberbegriffen der unabhängigen Ansprüche.The The invention relates to the antenna (read coil) of an RFID reader with at least a coil according to the preambles of the independent claims.
Um ein unbefugtes Entriegeln und/oder Starten durch fremde Personen zu vermeiden, werden Fahrzeuge heutzutage mit Systemen ausgestattet, mithilfe denen die Fahrzeugschlüssel im Nahfeld identifiziert werden können.Around Unauthorized unlocking and / or starting by strangers To avoid vehicles today are equipped with systems using which the vehicle keys can be identified in the near field.
Zur Identifikation von Fahrzeugschlüsseln werden unter anderem induktiv gekoppelte RFID-Systeme (Radio Frequency Identifikation Systems) eingesetzt, wobei die Identifikation von Fahrzeugschlüsseln nach dem Prinzip der elektromagnetischen Induktion erfolgt und in einem Nahfeld von einer Reichweite von einigen Zentimetern geschieht.to Identification of vehicle keys among other inductively coupled RFID systems (Radio Frequency Identification Systems), the identification of vehicle keys after The principle of electromagnetic induction takes place and in one Near field happens from a range of a few centimeters.
Ein solches System zur Identifikation von Fahrzeugschlüsseln weist eine Antenne auf, welche auch Lesespule des RFID-Lesegeräts genannt wird. Die Antenne weist wiederum eine induktive Spule mit mehreren Windungen auf. Die Antenne wird in der Regel in unmittelbarer Nähe zum Zündschlosses oder Start-/Stopptasters eingebaut.One has such system for the identification of vehicle keys an antenna, which is also called the reading coil of the RFID reader becomes. The antenna in turn has an inductive coil with several Turns on. The antenna is usually in close proximity to the ignition or Start / stop buttons installed.
Zum Entriegeln und/oder Starten des Fahrzeugs wird beispielsweise der Fahrzeugschlüssel in die Schlüsselaufnahme eines Zündschlosses eingeführt oder in die Nähe des Start-/Stopptasters gebracht.To the Unlocking and / or starting the vehicle, for example, the car keys in the key holder an ignition lock introduced or in the vicinity the start / stop button brought.
Beispielsweise durch mechanischen Kontakt zwischen dem Schlüssel und der Schlüsselaufnahme oder durch das Betätigen des Start-/Stopptasters wird das Lesegerät eingeschaltet. Dabei fließt Strom durch die induktive Spule der Antenne und erzeugt ein elektromagnetisches Feld.For example by mechanical contact between the key and the key holder or by pressing of the start / stop button, the reader is switched on. At the same time, electricity flows through the inductive coil of the antenna and generates an electromagnetic Field.
Beispielsweise beim Nahebringen des Fahrzeugschlüssels an die Antenne erzeugt das elektromagnetische Feld der Antennenspule Induktionsstrom in der Spule im Fahrzeugschlüssel und aktiviert somit den Signalsender im Schlüssel. Der Signalsender sendet dann seinerseits Identifikationscode an die Antenne des Lesegeräts. Das Lesegerät vergleicht den empfangenen Code mit vorher gespeicherten Identifikationsdaten und sendet im Falle einer Übereinstimmung ein Signal zum Steuerungssystem im Fahrzeug, um das Verriegelungssystem zu entriegeln und/oder das Fahrzeug zu starten.For example when the vehicle key is brought close to the antenna the electromagnetic field of the antenna coil induction current in the coil in the vehicle key and thus activates the signal transmitter in the key. The signal transmitter sends then in turn identification code to the antenna of the reader. The reader compares the received code with previously stored identification data and sends in case of a match a signal to the control system in the vehicle to the locking system unlock and / or start the vehicle.
Die Identifikation des Fahrzeugschlüssels erfolgt daher mithilfe elektromagnetischer Wechselwirkung zwischen der Antennenspule vom RFID-Lesegerät und der Spule im Fahrzeugschlüssel.The Identification of the vehicle key therefore takes place by means of electromagnetic interaction between the antenna coil from the RFID reader and the coil in the vehicle key.
Da der Fahrzeugschlüssel die zur Datenkommunikation bzw. zur Identifikation erforderliche Energie vom Lesegerät über das elektromagnetische Feld erhält, ist eine Datenkommunikation bzw. Identifikation und somit auch das Entriegeln und/oder Starten vom Fahrzeug selbst in den Notfällen möglich, wenn die Batterien im Fahrzeugschlüssel leer sind oder der Fahrzeugschlüssel keine eigene Stromversorgung hat.There the vehicle key the energy required for data communication or identification from the reader over the receives electromagnetic field, is a data communication or identification and therefore also that Unlocking and / or starting from the vehicle even in emergencies possible if the batteries in the vehicle key are empty or the vehicle key has no own power supply.
Ein
solches System ist in der Patentschrift
Nach
dem Stand der Technik, auch wie in der Offenlegungsschrift
Die Anordnung der Spule unter einer solchen, in der Regel metallischen Trägerplatte führt dazu, dass die elektromagnetische Feldstärke im Bereich über der Außenoberfläche der Trägerplatte relativ gering ist, da durch die Dicke der Trägerplatte der Abstand der Spule zur Außenoberfläche um diese Dicke vergrößert ist.The Arrangement of the coil under such, usually metallic support plate leads to, that the electromagnetic field strength in the area above the Outer surface of the support plate is relatively low, since by the thickness of the support plate, the distance of the coil to the outer surface around this Thickness is increased.
Beim herkömmlichen Zündschloss mit Schlüsselaufnahme stellt diese Anordnung wenige Probleme dar, weil der Fahrzeugschlüssel immer in die Schlüsselaufnahme und damit hinter die Trägerplatte eingeführt und somit in die Kommunikationsreichweite der Spule angebracht wird.At the usual Ignition lock with key holder This arrangement poses few problems because the vehicle key always in the key holder and thus behind the carrier plate introduced and thus placed in the communication range of the coil.
Da bei Betätigung des Start/Stopp-Tasters eine Identifikation des Fahrzeugschlüssels beim Nahebringen des Schlüssels an das Zündschloss oder dem Start-/Stopptaster erfolgen muss, ist eine genügend große Reichweite des elektromagnetischen Feldes unerlässlich. Dies ist beispielsweise bei Keyless-Fahrzeugen im Limp-Home-Fall (Notstart des Fahrzeugs) besonders wichtig.There on actuation the start / stop button an identification of the vehicle key when Close to the key to the ignition or the start / stop button, is a sufficiently large range of the electromagnetic field is essential. This is for example in keyless vehicles in limp home case (emergency start of the vehicle) particularly important.
Bei der Anordnung, wobei sich die Spule hinter der Trägerplatte befindet, kann der Abstand der Spule zur Außenoberfläche der Trägerplatte die Identifikation des Fahrzeugschlüssels erschweren, da das elektromagnetischen Feld über der Trägerplatte aufgrund des relativ großen Abstands zur Spule zu schwach geworden ist, um in der Spule im Fahrzeugschlüssel genügend starken Induktionsstrom zu erzeugen.at the arrangement, wherein the coil behind the support plate is the distance of the coil to the outer surface of the carrier plate, the identification of the vehicle key complicate because the electromagnetic field over the carrier plate due to the relative huge Distance to the coil has become too weak to strong enough in the coil in the vehicle key To generate induction current.
Außerdem werden von Automobilherstellern häufig moderne Fahrzeuginnendesigns gefordert, bei welchen Zündschloss und/oder Start-/Stopptaster mit Metalloptik zu versehen sind, wobei häufig ein Ring aus Chrom als Abdeckung für den Schlosszylinder beim Zündschloss oder Zylinder für den Knopf beim Start-/Stopptaster verwendet wird.In addition, automobile manufacturers often require modern vehicle interior designs in which the ignition lock and / or start / stop button are to be provided with metal look, often a ring of chrome as a cover for the lock cylinder at the ignition or cylinder for the button Start / stop button is used.
Hinzu werden der Zündschloss und/oder der Start-/Stopptaster oft an einer metallischen Trägerplatte angeordnet.in addition be the ignition and / or the start / stop button often on a metallic support plate arranged.
Allerdings ist das Metall elektrisch leitend und eine zusammenhängende metallische Oberfläche schirmt das elektromagnetische Feld ab. Das elektromagnetische Feld induziert auf der Metalloberfläche Wirbelströme, die ihrerseits elektromagnetische Felder erzeugen, welche dem ursprünglichen Feld entgegenwirken und somit dieses abschwächen oder gar vollständig kompensieren. Dadurch ist eine Identifikation vom Fahrzeugschlüssel mittels RFID-System nicht möglich oder sehr schwer durchzuführen.Indeed the metal is electrically conductive and a continuous metallic one surface shields the electromagnetic field. The electromagnetic field induced on the metal surface Eddy currents which in turn generate electromagnetic fields which are the original field Counteract and thus mitigate this or even completely compensate. As a result, an identification of the vehicle key by means of RFID system is not possible or very difficult to do.
Es ist daher eine Aufgabe der vorliegenden Erfindung, die Antenne der eingangs genannten Art derart zu entwickeln, dass die Datenkommunikation bzw. die Identifikation des Fahrzeugschlüssels selbst beim Keyless-Fall oder Limp-Home-Fall durch Nahebringen des Schlüssels an die Abdeckung des Zündschlosses bzw. Start-/Stopptasters möglich ist.It is therefore an object of the present invention, the antenna of initially mentioned type such that the data communication or the identification of the vehicle key even when keyless case or limp home case by bringing the key to the cover of the ignition lock or start / stop buttons possible is.
Diese Aufgabe ist erfindungsgemäß gelöst durch eine Antenne mit den Merkmalen der unabhängigen Ansprüche. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.These The object is achieved by an antenna having the features of the independent claims. advantageous Embodiments of the invention are the subject of the dependent claims.
Kerngedanke der Erfindung ist, die Spule zwischen der Abdeckung und der Trägerplatte anzuordnen. Dabei wird die Abdeckung als ein Ring aus Metall oder elektrisch nicht leitendem Werkstoff mit Metalloptik ausgeführt. Im Falle des metallischen Rings wird der Ring durch einen Schlitz radial zur Ringachse getrennt. Durch diesen Schlitz wird verhindert, dass sich beim Betrieb der Antenne Wirbelströme im Metallring integral zum Ring bilden. Dadurch entstehen deutlich weniger Wirbelströme im Metallring und wird das elektromagnetische Feld, welches von der Antennenspule ausgestrahlt wird, nur schwach abgedämpft.core idea the invention is the coil between the cover and the carrier plate to arrange. The cover is made as a ring of metal or electrically non-conductive material designed with metal optics. in the Case of the metallic ring, the ring is radial through a slot separated to the ring axis. Through this slot prevents When operating the antenna eddy currents in the metal ring integral to Form ring. This results in significantly less eddy currents in the metal ring and becomes the electromagnetic field emitted by the antenna coil is broadcast, only slightly damped.
Ferner wird vorzugsweise ein Ferritband aus hochpermeablem Werkstoff zwischen der Spule und der (metallischen) Trägerplatte angeordnet. Die elektromagnetischen Feldlinien in Richtung der Trägerplatte werden von diesem Ferritband gebündelt und verstärkt in den Bereich ausgestrahlt, wo sich der Fahrzeugschlüssel zur Identifikation gebracht wird. Dies führt wiederum zu einer größeren Reichweite der Antenne zur induktiven Datenkommunikation bzw. Identifikation des Fahrzeugschlüssels.Further is preferably a ferrite strip of high permeability material between the coil and the (metallic) support plate arranged. The electromagnetic Field lines in the direction of the carrier plate are bundled by this ferrite band and reinforced broadcast in the area where the vehicle key to Identification is brought. This in turn leads to a greater range of Antenna for inductive data communication or identification of the Car key.
Um zu vermeiden, im Falle einer Anordnung der Antenne an einer metallischen Trägerplatte zwischen der metallischen Abdeckung und Trägerplatte einen elektrischen Kurzschluss und somit eine zusammenhängende Metallfläche für Wirbelströme bildet, wird eine Isolationssicht zwischen der Abdeckung und Trägerplatte angeordnet.Around to avoid, in the case of an arrangement of the antenna to a metallic support plate between the metallic cover and carrier plate an electric Short circuit and thus forms a contiguous metal surface for eddy currents, becomes an insulating view between the cover and the carrier plate arranged.
Weitere Ausführungsmöglichkeit ist, die Spule in einem zylinderförmigen Spritzguss aus elektromagnetisch nicht leitendem Werkstoff, bspw. Kunststoff, einzugießen, wobei dieser Spritzguss beim Zündschloss als Schlosszylinder und/oder beim Start-/Stopptaster als Knopf-Zylinder (Zylinder für den Knopf, wobei der Knopf entlang diesen Zylinder gleitet) verwendet wird. Die Spule wird in dem oberen Bereich des Spritzgusses eingegossen, so dass sich die Spule nach dem Einbau des Spritzgusses in der Trägerplatte oberhalb der Trägerplatte befindet.Further execution option is the coil in a cylindrical injection of electromagnetic Non-conductive material, eg. Plastic, pour, wherein this injection molding at the ignition lock as a lock cylinder and / or at the start / stop button as a button cylinder (Cylinder for the Button with the button sliding along this cylinder) becomes. The coil is poured in the upper part of the injection molding, so that the coil after installing the injection molding in the carrier plate above the carrier plate located.
Die Außenoberseite des Spritzgusses wird mit einer Metallschicht oder einer Schicht aus elektromagnetisch nicht leitendem Stoff mit Metalloptik beschichtet. Bei Metallbeschichtung wird die Metallschicht mit einem Schlitz radial zur Zylinderachse versehen.The Outside top Injection molding is done with a metal layer or a layer made of electromagnetically non-conductive material coated with metal optics. For metal coating, the metal layer becomes a slot provided radially to the cylinder axis.
Durch die oben beschriebenen Veränderungen wurde vor allem verhindert, dass sich starke Wirbelströme in den Metallflächen bilden, welche ihrerseits elektromagnetische Felder erzeugen, die dem Feld von der Antenne entgegenwirken und dieses abschwächen.By the changes described above was mainly prevented that strong eddy currents in the metal surfaces form, which in turn generate electromagnetic fields, the counteract the field from the antenna and weaken it.
Die erfindungsgemäßen Antennenvorrichtungen können auch in anderen Bereichen, wo induktive Datenkommunikation mithilfe RFID-Systeme durchzuführen ist, verwendet werden.The Antenna devices according to the invention can also in other areas where using inductive data communication Perform RFID systems is to be used.
Im Folgenden wird die Erfindung anhand der Ausführungsbeispiele und Figuren näher erläutert.in the Below, the invention with reference to the embodiments and figures explained in more detail.
Um
eine Abschirmung vom elektromagnetischen Feld (
Zwischen
dem Chromring (
Um
zu vermeiden, im Falle einer Anordnung der Antenne an einer metallischen
Trägerplatte
(
Die
Außenoberseite
des Zylinders (
Ein
Ferritband (
Da
der Chromring elektrisch leitfähig
ist, kann der Chromring als eine Wicklung der Antennenspule verwendet
werden. Wie in der
- 1.11.1
- Kunststoff-Zylinder vom Start-/StopptasterPlastic cylinder from the start / stop button
- 1.21.2
- Kunststoff-Zylinder vom Start-/Stopptaster mit integrierter SpulePlastic cylinder from the start / stop button with integrated coil
- 22
- Knopf vom Start-/Stopptasterstud from the start / stop button
- 33
- Metallische TrägerplatteMetallic support plate
- 44
- Schlüsselkey
- 55
- Rückholfederreturn spring
- 6A6A
- Chromring mit integrierter Spulechrome ring with integrated coil
- 6B6B
- Chromschichtchromium layer
- 6C6C
- Chromringchrome ring
- 6.16.1
- Schlitzslot
- 6.26.2
- Ring-/ZylinderachseRing / cylinder axis
- 77
- SpuleKitchen sink
- 88th
- Signalleitungensignal lines
- 8.18.1
- Signalleitung 1signal line 1
- 8.28.2
- Signalleitung 2signal line 2
- 99
- Ferritbandferrite band
- 1010
- Isolationsschichtinsulation layer
- 1111
- Elektromagnetisches Feld der Spuleelectromagnetic Field of the coil
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006061298A DE102006061298A1 (en) | 2006-12-22 | 2006-12-22 | Radio frequency identification reader antenna for inductive data communication, particularly for identification of vehicle key, is arranged on mother board, and has metallic barrier and electromagnetic coil |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006061298A DE102006061298A1 (en) | 2006-12-22 | 2006-12-22 | Radio frequency identification reader antenna for inductive data communication, particularly for identification of vehicle key, is arranged on mother board, and has metallic barrier and electromagnetic coil |
Publications (1)
Publication Number | Publication Date |
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DE102006061298A1 true DE102006061298A1 (en) | 2008-06-26 |
Family
ID=39431715
Family Applications (1)
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DE102006061298A Withdrawn DE102006061298A1 (en) | 2006-12-22 | 2006-12-22 | Radio frequency identification reader antenna for inductive data communication, particularly for identification of vehicle key, is arranged on mother board, and has metallic barrier and electromagnetic coil |
Country Status (1)
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DE (1) | DE102006061298A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2935728A1 (en) * | 2008-09-09 | 2010-03-12 | Peugeot Citroen Automobiles Sa | Central locking device initialization system for motor vehicle, has wave reflector placed inside passenger compartment between transmitter and receiver, so that power of electromagnetic wave is decreased by partial reflection on reflector |
WO2011036375A1 (en) * | 2009-09-25 | 2011-03-31 | Peugeot Citroën Automobiles SA | Device for vehicle hands-free access and start system |
CN103255957A (en) * | 2012-02-20 | 2013-08-21 | 福建天立源机电设备有限公司 | Method for judging location of transponder |
DE102015103016A1 (en) * | 2015-03-03 | 2016-09-08 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Method for operating an authorization device |
GB2552654A (en) * | 2016-07-29 | 2018-02-07 | Fifth Dimension Digital Ltd | Near field communication ring |
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DE1957342A1 (en) * | 1969-01-02 | 1970-11-26 | Wissenschaftlich Tech Zentrum | Trouser pocket bag stitcher/handler |
DE29912819U1 (en) * | 1999-07-22 | 1999-12-16 | Automaten Seitz Vertrieb & Kun | Coin-shaped data carrier |
DE102004040831A1 (en) * | 2004-08-23 | 2006-03-09 | Polyic Gmbh & Co. Kg | Radio-tag compatible outer packaging |
-
2006
- 2006-12-22 DE DE102006061298A patent/DE102006061298A1/en not_active Withdrawn
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DE1957342A1 (en) * | 1969-01-02 | 1970-11-26 | Wissenschaftlich Tech Zentrum | Trouser pocket bag stitcher/handler |
DE29912819U1 (en) * | 1999-07-22 | 1999-12-16 | Automaten Seitz Vertrieb & Kun | Coin-shaped data carrier |
DE102004040831A1 (en) * | 2004-08-23 | 2006-03-09 | Polyic Gmbh & Co. Kg | Radio-tag compatible outer packaging |
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WO2011036375A1 (en) * | 2009-09-25 | 2011-03-31 | Peugeot Citroën Automobiles SA | Device for vehicle hands-free access and start system |
FR2950722A1 (en) * | 2009-09-25 | 2011-04-01 | Peugeot Citroen Automobiles Sa | DEVICE FOR ACCESS SYSTEM AND FREE HAND STARTING OF VEHICLE |
CN103255957A (en) * | 2012-02-20 | 2013-08-21 | 福建天立源机电设备有限公司 | Method for judging location of transponder |
CN103255957B (en) * | 2012-02-20 | 2015-05-20 | 福建天立源机电设备有限公司 | Method for judging location of transponder |
DE102015103016A1 (en) * | 2015-03-03 | 2016-09-08 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Method for operating an authorization device |
GB2552654A (en) * | 2016-07-29 | 2018-02-07 | Fifth Dimension Digital Ltd | Near field communication ring |
US11083256B2 (en) | 2016-07-29 | 2021-08-10 | Kwi Group Ltd | Near field communication ring |
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