EP0867971B1 - Schlüsselloses Zugangssystem für ein Kraftfahrzeug mit einem Magnetfeldsensor - Google Patents
Schlüsselloses Zugangssystem für ein Kraftfahrzeug mit einem Magnetfeldsensor Download PDFInfo
- Publication number
- EP0867971B1 EP0867971B1 EP98105303A EP98105303A EP0867971B1 EP 0867971 B1 EP0867971 B1 EP 0867971B1 EP 98105303 A EP98105303 A EP 98105303A EP 98105303 A EP98105303 A EP 98105303A EP 0867971 B1 EP0867971 B1 EP 0867971B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- magnetic field
- field sensor
- conductor loop
- motor vehicle
- conductor
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
-
- 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
- G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
-
- 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
-
- 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
- G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
- G07C2009/0019—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks the keyless data carrier having only one limited data transmission rangs
-
- 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
- G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
- G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
- G07C2009/00777—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means by induction
Definitions
- the invention relates to a keyless entry system for a Motor vehicle with a magnetic field sensor (antenna) according to the preamble of claim 1, with which the direction of incidence of a transmitter in Near-field emitted electromagnetic radiation can be detected.
- Keyless entry systems are e.g. known from DE 38 20 248 A1.
- This system exists from a portable radio transmitter, a manually operable arranged on the vehicle Trigger switch, a control device which is also connected to actuating devices, and a further antenna arranged in or on the vehicle which consists of a first Loop antenna with a substantially parallel to the longitudinal axis of the vehicle Magnetic field and a second loop antenna with substantially transverse to the longitudinal axis of the Vehicle magnetic field exists.
- the second loop antenna should be between an outer surface and an inner surface of the vehicle near the trigger switch
- the magnetic field sensor proposed in claim 1 consists of at least a first and at least one a second conductor loop.
- the first conductor loop is elongated (e.g. rectangular or ellipsoid with an aspect ratio that is significantly larger than 1).
- the second Conductor loop is arranged concentrically to the first and is also constructed symmetrically.
- the second conductor loop has a substantially constant center Distance (e.g. circular or square).
- the second conductor loop forms one
- the magnetic sensor is for evaluation with a Processing unit connected.
- the conductor loops are preferably one printed circuit executed essentially flat.
- the conductor loops are preferably dimensioned such that those in the second conductor loop induced voltage is approximately the same order of magnitude as the resulting voltage in the crossed loop.
- the first conductor loop has one middle section in which the conductor loop crosses.
- This conductor loop with about 8-shaped contour leads to a phase difference, so that the output voltage to zero becomes the same in the sections of the conductor loop adjacent to the intersection Voltage is induced.
- the crossing results in an addition with different Polarity performed.
- the first conductor loop has two substantially symmetrical sections larger area, which are also arranged symmetrically. So that accuracy the direction determination improved. So it doesn't depend so much on the shape of the individual Sections on (e.g. round, angular, ellipsoid) but on their symmetry to the crossing point.
- a third conductor loop is provided, which in Form and function of the first conductor loop corresponds, but in their plane perpendicular to this is arranged.
- the magnetic field sensor according to the invention is in a circuit Motor vehicle used, which has at least one processing and control device has, which also with actuators for actuating the door locks and / or other devices (e.g. ignition circuit).
- the magnetic field sensor according to the invention is shown in the attached schematic Illustrated.
- the magnetic field sensor 2 In motor vehicle 1, in particular in the area of the dashboard, is perpendicular to Vehicle longitudinal axis of the magnetic field sensor 2 consisting of first conductor loop 3 and second Conductor loop 4 arranged. In a central region of the first conductor loop 3 there are Crossed conductor tracks.
- the magnetic field sensor will preferably tuned to a wavelength that is a multiple of a practical distance to the portable transmitter. This ensures that within this distance Antenna is in the near field of the portable transmitter, which means that the intensity is the 3rd power drops and the difference in induced voltages increases.
- the magnetic field sensor 2 is provided with a processing and control device 5 to the actuating devices 6 for unlocking and locking the locks.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Security & Cryptography (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Lock And Its Accessories (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Measuring Magnetic Variables (AREA)
Description
- US 5 293 160 A
- US 4 973 958 A
- US 4 873 530 A
- XP000226241: "DUAL-LOOP ANTENNA FOR VEHICLE ELECTRONIC KEY SYSTEM", RESEARCH DISCLOSURE, KENNETH MASON PUBLICATIONS, HAMPSHIRE, GB; 1991-09-01; ISSN 0374-4353; Nr. 329, Seite 679, Vn: 2244
Claims (2)
- Schiüsselloses Zugangssystem für ein Kraftfahrzeug (1) mit zwei in einer Ebene angeordneten Leiterschleiten (3,4) umfassenden Magnetfeldsensor (2),
dadurch gekennzeichnet,a) dass die erste Leiterschleife (3) des Magnetfeldsensors (2) einen mittigen Abschnitt aufweist, in dem die Leiterschleife (3) gekreuzt verläuft und einen Kreuzungspunkt bildet,b) wobei die erste Leiterschleife (3) mit nebeneinander benachbarten länglichen Leiterabschnitten (31, 32) und symmetrisch bezüglich einer an dem Kreuzungspunkt, senkrecht zur ersten Leiterschleife (3) verlaufenden Symmetrielinie ausgebildet ist, derart dass eine längliche Leiterschleife (3) gebildet ist,c) dass die zweite Leiterschleife (4) aufweist konzentrisch zum Kreuzungspunkt und symmetrisch zur Symmetrielinie angeordnet ist undd) dass für den Magnetfeldsensor (2) ein Schaltkreis mit wenigstens einer Verarbeitungs- und Steuereinrichtung (5) vorhanden ist, wobei diese mit einer oder mehreren Stelleinrichtungen (6) zur Betätigung von Verriegelungen verbunden ist. - Schlüsselloses Zugangssystem für ein Kraftfahrzeug (1) nach Anspruch 1,
dadurch gekennzeichnet, dass der Magnetfeldsensor (2) im Bereich eines Armaturenbretts eines Kraftfahrzeugs und senkrecht zu dessen Fahrzeuglängsachse untergebracht ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712911A DE19712911C2 (de) | 1997-03-27 | 1997-03-27 | Magnetfeldsensor für schlüsselloses Zugangssystem insbesondere bei Kraftfahrzeugen sowie Verwendung des Magnetfeldsensors in einem Schaltkreis eines Kraftfahrzeuges |
DE19712911 | 1997-03-27 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0867971A2 EP0867971A2 (de) | 1998-09-30 |
EP0867971A3 EP0867971A3 (de) | 1998-10-07 |
EP0867971B1 true EP0867971B1 (de) | 2004-06-02 |
Family
ID=7824808
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98105303A Expired - Lifetime EP0867971B1 (de) | 1997-03-27 | 1998-03-24 | Schlüsselloses Zugangssystem für ein Kraftfahrzeug mit einem Magnetfeldsensor |
Country Status (4)
Country | Link |
---|---|
US (1) | US5940003A (de) |
EP (1) | EP0867971B1 (de) |
JP (1) | JPH1123682A (de) |
DE (2) | DE19712911C2 (de) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6138050A (en) * | 1997-09-17 | 2000-10-24 | Logitech, Inc. | Antenna system and apparatus for radio-frequency wireless keyboard |
FR2786030B1 (fr) * | 1998-11-16 | 2001-09-07 | Valeo Securite Habitacle | Vehicule automobile equipe d'un dispositif identifieur assurant la commande d'organes de manoeuvre du vehicule lorsqu'un identifiant est detecte dans un espace predetermine |
DE10014302A1 (de) * | 2000-03-23 | 2001-10-04 | Infineon Technologies Ag | Antennenanordnung |
US6356243B1 (en) * | 2000-07-19 | 2002-03-12 | Logitech Europe S.A. | Three-dimensional geometric space loop antenna |
EP1189306B1 (de) * | 2000-09-19 | 2004-12-01 | Land Rover | Sicherheitssystem |
DE10046897B4 (de) * | 2000-09-21 | 2004-02-05 | Siemens Ag | Sende- und Empfangsverfahren, insbesondere zum Detektieren eines ID-Gebers |
JP3587185B2 (ja) | 2001-09-28 | 2004-11-10 | オムロン株式会社 | 誘導無線アンテナ、およびこれを用いた非接触データ通信装置 |
DE10159604A1 (de) | 2001-12-05 | 2003-06-12 | Atmel Germany Gmbh | Verfahren zur Erkennung einer Weiterleitung bei einer kontaktlosen Datenübertragung |
US6724322B2 (en) | 2001-12-21 | 2004-04-20 | Lear Corporation | Remote system for providing vehicle information to a user |
DE10309600A1 (de) * | 2003-03-05 | 2004-09-16 | Delphi Technologies, Inc., Troy | Sicherungssystem |
US7463987B2 (en) * | 2003-09-19 | 2008-12-09 | Takata Holdings, Inc. | Magnetic sensing system and method |
JP2007510134A (ja) * | 2003-09-19 | 2007-04-19 | オートモーティブ システムズ ラボラトリー インコーポレーテッド | 磁気衝突検知方法 |
DE102005013910B3 (de) | 2005-03-24 | 2006-09-28 | Siemens Ag | Verfahren für ein Start- und Zugangssystem für ein Kraftfahrzeug |
JP2009507210A (ja) | 2005-07-29 | 2009-02-19 | オートモーティブ システムズ ラボラトリー インコーポレーテッド | 磁気衝突センサー |
WO2007030861A1 (en) * | 2005-09-12 | 2007-03-22 | Magellan Technology Pty Ltd | Antenna design and interrogator system |
WO2015200264A1 (en) | 2014-06-24 | 2015-12-30 | Google Inc. | Magnetic controller for device control |
DE102015213806A1 (de) | 2015-07-22 | 2017-01-26 | Volkswagen Aktiengesellschaft | Positionsbestimmung mit einem Magnetfeldsensor für ein Fahrzeug |
DE102015016557A1 (de) * | 2015-12-18 | 2017-06-22 | Bayerische Motoren Werke Aktiengesellschaft | Autorisierung der Nutzung eines Kraftfahrzeugs |
DE102015016552A1 (de) | 2015-12-18 | 2017-06-22 | Bayerische Motoren Werke Aktiengesellschaft | Autorisierung der Nutzung eines Kraftfahrzeugs |
DE102015016558A1 (de) * | 2015-12-18 | 2017-06-22 | Bayerische Motoren Werke Aktiengesellschaft | Autorisierung der Nutzung eines Kraftfahrzeugs |
DE102015016553A1 (de) | 2015-12-18 | 2017-06-22 | Bayerische Motoren Werke Aktiengesellschaft | Autorisierung der Nutzung eines Kraftfahrzeugs |
DE102016204750A1 (de) * | 2016-03-22 | 2017-09-28 | Bayerische Motoren Werke Aktiengesellschaft | Autorisierung der Nutzung eines Kraftfahrzeugs |
DE102016204748A1 (de) * | 2016-03-22 | 2017-09-28 | Bayerische Motoren Werke Aktiengesellschaft | Autorisierung der Nutzung eines Kraftfahrzeugs |
DE102016204746A1 (de) | 2016-03-22 | 2017-09-28 | Bayerische Motoren Werke Aktiengesellschaft | Autorisierung der Nutzung eines Kraftfahrzeugs |
DE102016204749A1 (de) | 2016-03-22 | 2017-09-28 | Bayerische Motoren Werke Aktiengesellschaft | Autorisierung der Nutzung eines Kraftfahrzeugs |
DE102016111707B4 (de) | 2016-06-27 | 2019-08-14 | Volkswagen Aktiengesellschaft | Verfahren und System zum Erfassen einer Relativposition eines mobilen Endgeräts in Bezug auf ein Fahrzeug |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58139010A (ja) * | 1982-02-15 | 1983-08-18 | Nissan Motor Co Ltd | 車両用走行誘導装置 |
JPS61196080A (ja) * | 1985-02-21 | 1986-08-30 | 日産自動車株式会社 | 無線式利用者識別装置 |
JPS6278379A (ja) * | 1985-09-30 | 1987-04-10 | 日産自動車株式会社 | 車両用施解錠制御装置 |
NL8603005A (nl) * | 1986-11-27 | 1988-06-16 | Philips Nv | Magnetisch resonantie apparaat met flexibele quadratuur spoelenstelsel. |
JP2546842B2 (ja) * | 1987-06-16 | 1996-10-23 | 日産自動車株式会社 | 車両用施解錠制御装置 |
US5293160A (en) * | 1989-11-02 | 1994-03-08 | Nissan Motor Company, Ltd. | Keyless vehicle lock system with distance measuring |
DE4005079A1 (de) * | 1990-02-17 | 1991-08-22 | Dornier Gmbh | Vorrichtung zur vollstaendigen bestimmung des gradiententensors eines magnetfelds |
US5099247A (en) * | 1990-12-14 | 1992-03-24 | General Electric Company | Electronic steering of pattern of an antenna system |
DE4232827B4 (de) * | 1992-09-30 | 2004-08-05 | Siemens Ag | Zirkular polarisierte Lokal-Antennenanordnung für ein Kernspintomographiegerät |
US5519318A (en) * | 1992-12-28 | 1996-05-21 | The United States Of America As Represented By The Secretary Of The Navy | Triaxial magnetic heading sensing apparatus having magnetaresistors and nulling coils |
US5459395A (en) * | 1993-07-06 | 1995-10-17 | General Electric Company | Reduced flux current sensor |
EP0650074A1 (de) * | 1993-10-22 | 1995-04-26 | Texas Instruments Holland B.V. | Genaues Hochfrequenz-Identifizierungs- und Ortsbestimmungssystem |
US5532709A (en) * | 1994-11-02 | 1996-07-02 | Ford Motor Company | Directional antenna for vehicle entry system |
-
1997
- 1997-03-27 DE DE19712911A patent/DE19712911C2/de not_active Expired - Fee Related
-
1998
- 1998-03-24 DE DE59811489T patent/DE59811489D1/de not_active Expired - Fee Related
- 1998-03-24 EP EP98105303A patent/EP0867971B1/de not_active Expired - Lifetime
- 1998-03-26 US US09/048,483 patent/US5940003A/en not_active Expired - Fee Related
- 1998-03-27 JP JP10100093A patent/JPH1123682A/ja active Pending
Non-Patent Citations (1)
Title |
---|
"DUAL-LOOP ANTENNA FOR VEHICLE ELECTRONIC KEY SYSTEM.", RESEARCH DISCLOSURE., MASON PUBLICATIONS, HAMPSHIRE., GB, no. 329., 1 September 1991 (1991-09-01), GB, pages 679., XP000226241, ISSN: 0374-4353 * |
Also Published As
Publication number | Publication date |
---|---|
EP0867971A3 (de) | 1998-10-07 |
EP0867971A2 (de) | 1998-09-30 |
DE59811489D1 (de) | 2004-07-08 |
DE19712911C2 (de) | 2001-09-13 |
JPH1123682A (ja) | 1999-01-29 |
DE19712911A1 (de) | 1998-10-08 |
US5940003A (en) | 1999-08-17 |
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