EP0867971B1 - Keyless entry system for a motor vehicle with a magnetic field sensor - Google Patents

Keyless entry system for a motor vehicle with a magnetic field sensor Download PDF

Info

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
Application number
EP98105303A
Other languages
German (de)
French (fr)
Other versions
EP0867971A3 (en
EP0867971A2 (en
Inventor
Martin Schulz
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.)
Ford Global Technologies LLC
Original Assignee
Ford Global Technologies LLC
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 Ford Global Technologies LLC filed Critical Ford Global Technologies LLC
Publication of EP0867971A2 publication Critical patent/EP0867971A2/en
Publication of EP0867971A3 publication Critical patent/EP0867971A3/en
Application granted granted Critical
Publication of EP0867971B1 publication Critical patent/EP0867971B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

Die Erfindung betrifft ein schlüsselloses Zugangssytem für ein Kraftfahrzeug mit einem Magnetfeldsensor (Antenne) gemäβ Oberbegriff von Anspruch 1, mit dem die Einfallsrichtung einer von einem Sender im Nahfeld ausgestrahlten elektromagnetischen Strahlung detektiert werden kann.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.

Schlüssellose Zugangssysteme sind z.B. aus DE 38 20 248 A1 bekannt. Dieses System besteht aus einem tragbaren Funksender, einem am Fahrzeug angeordneten manuell betätigbaren Triggerschalter, einer Steuereinrichtung, die auch mit Betätigungseinrichtungen verbunden ist, und einer weiteren im oder am Fahrzeug angeordneten Antenne die aus einer ersten Rahmenantenne mit im wesentlichen parallel zur Längsachse des Fahrzeuges ausgebildetem Magnetfeld und einer zweiten Rahmenantenne mit im wesentlichen quer zur Längsachse des Fahrzeuges ausgebildetem Magnetfeld besteht. Die Zweite Rahmenantenne soll zwischen einer Außenfläche und einer Innenfäche des Fahrzeuges nahe des Triggerschalters angeordnetKeyless 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

Weitere schlüssellose Zugangssysteme für ein Kraftfahrzeug sind bekannt aus folgenden Druckschriften:

  • 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
Further keyless entry systems for a motor vehicle are known from the following publications:
  • 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; No. 329, page 679, Vn: 2244

Eine Erkennung der Einfallsrichtung der von dem tragbaren Sender ausgestrahlten elektromagnetischen Strahlung ist weder vorgesehen noch erscheint sie mit dem beschriebenen Antennenaufbau mit der für die hier vorgesehene Anwendung gewünschten Genauigkeit möglich.Detection of the direction of incidence of those emitted by the portable transmitter electromagnetic radiation is neither intended nor does it appear with the described antenna structure with the desired for the intended application here Accuracy possible.

Gestiegene Sicherheitsanforderungen lassen es wünschenswert erscheinen, am Fahrzeug ein schlüsselloses Zugangssystem zu installieren, welches in der Lage ist nur die dem tragbaren Sender nächstliegende Tür zu öffnen. Hierzu ist es notwendig im Fahrzeug eine Antenne zu installieren, die im Nahfeld die Position des tragbaren Senders relativ zum Fahrzeugmittelpunkt bzw. zu dessen Längsachse einer Messung zugänglich macht.Increased safety requirements make it appear desirable to enter the vehicle to install keyless entry system that is only capable of the portable Open the nearest door to the transmitter. For this it is necessary to have an antenna in the vehicle install the position of the portable transmitter relative to the near field Makes the vehicle center or its longitudinal axis accessible for measurement.

Der in Anspruch 1 vorgeschlagene Magnetfeldsensor besteht aus wenigstens einer ersten und wenigstens einer zweiten Leiterschleife. Die erste Leiterschleife ist länglich ausgebildet (z.B. rechteckig oder ellipsoid mit einem Seitenverhältnis welches wesentlich größer als 1 ist). Die zweite Leiterschleife ist konzentrisch zur ersten angeordnet und ist ebenfalls symmetrisch aufgebaut.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.

Die zweite Leiterschleife weist einen zum Zentrum im wesentlichen konstanten Abstand auf (z.B. kreisförmig oder quadratisch). Die zweite Leiterschleife bildet eine The second conductor loop has a substantially constant center Distance (e.g. circular or square). The second conductor loop forms one

Referenz, so daß aus dem Verhältnis der in den Leiterschleifen induzierten Spannungen die Richtung bestimmt werden kann. Der Magnetsensor ist zur Auswertung mit einer Verarbeitungseinheit verbunden. Die Leiterschleifen sind bevorzugt entsprechend einer gedruckten Schaltung im wesentlichen eben ausgeführt.Reference, so that from the ratio of the voltages induced in the conductor loops Direction can be determined. The magnetic sensor is for evaluation with a Processing unit connected. The conductor loops are preferably one printed circuit executed essentially flat.

Bevorzugt sind die Leiterschleifen so dimensioniert, daß die in der zweiten Leiterschleife induzierte Spannung annähernd die gleiche Größenordnung wie die resultierende Spannung in der gekreuzten Schleife hat.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.

Die erste Leiterschleife weist einen mittigen Abschnitt auf, in dem die Leiterschleife gekreuzt verläuft. Diese Leiterschleife mit etwa 8-förmiger Kontur führt zu einer Phasendifferenz, so daß die Ausgangsspannung zu Null wird, wenn in den der Kreuzung benachbarten Abschnitten der Leiterschleife die gleiche Spannug induziert wird. Durch die Kreuzung wird eine Addition mit unterschiedlicher Polarität durchgeführt.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.

Die erste Leiterschleife weist zwei im wesentlichen symmetrischeAbschnitte größerer Fläche auf, welche auch symmetrisch angeordnet sind. Damit wird die Genauigkeit der Richtungsbestimmung verbessert. Es kommt also nicht so sehr auf die Form der einzelne Abschnitte an (z.B. rund, eckig, ellipsoid) sondern auf deren Symmetrie zum Kreuzungspunkt.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.

Nach einer weiter bevorzugten Ausführung ist eine dritte Leiterschleife vorgesehen, die in Form und Funktion der ersten Leiterschleife entspricht, jedoch in deren Ebene senkrecht zu dieser angeordnet ist. Hierdurch wird in Verbindung mit einer Verarbeitungseinrichtung die Bestimmung aller vier in der Ebene des Magnetsensors liegenden Raumrichtungen ermöglicht. Hierdurch können auch an Front und Heck des Fahrzeuges angeordnete Verriegelungseinrichtungen in das schlüssellose Zugangssystem einbezogen werden.According to a further preferred embodiment, 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. As a result, the Determination of all four spatial directions lying in the plane of the magnetic sensor allows. This can also be arranged at the front and rear of the vehicle Locking devices can be included in the keyless entry system.

Der erfindungsgemäße Magnetfeldsensor wird in einem Schaltkreis eines Kraftfahrzeuges verwendet, welcher wenigstens eine Verarbeitungs- und Steuereinrichtung aufweist, die außerdem noch mit Stelleinrichtungen zur Betätigung der Türverriegelungen und/oder weiteren Einrichtungen (z.B. Zündkreis) verbunden ist. 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).

Der erfindungsgemäße Magnetfeldsensor wird anhand der beigefügten schematischen Abbildung veranschaulicht.The magnetic field sensor according to the invention is shown in the attached schematic Illustrated.

Im Kraftfahrzeug 1 ist, insbesondere im Bereich des Armaturenbretts, senkrecht zur Fahrzeuglängsachse der Magnetfeldsensor 2 bestehend aus erster Leiterschleife 3 und zweiter Leiterschleife 4 angeordnet. In einem mittleren Bereich der ersten Leiterschleife 3 sind deren Leiterbahnen gekreuzt. Der Magnetfeldsensor wird bevorzugt auf eine Wellenlänge abgestimmt die ein mehrfaches eines praktikablen Abstandes zum tragbaren Sender beträgt. Hierdurch wird erreicht, daß innerhalb diese Abstandes die Antenne im Nahfeld des tragbaren Senders liegt wodurch die Intensität mit der 3. Potenz abfällt und die Differenz der induzierten Spannungen zunimmt. Der Magnetfeldsensor 2 ist mit einer Verarbeitungs- und Steuereinrichtung 5 versehen, an die Betätigungseinrichtungen 6 zum Entriegeln und Verriegeln der Schlösser angeschlossen sind.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.

Claims (2)

  1. Keyless access system for a motor vehicle (1) having a magnetic field sensor (2) which comprises two conductor loops (3, 4) arranged in a plane,
    characterized
    a) in that the first conductor loop (3) of the magnetic field sensor (2) has a central section in which the conductor loop (3) runs crossed over and forms a crossing point,
    b) in which the first conductor loop (3) is formed with elongated conductor sections (31, 32) which are adjacent alongside one another and is designed symmetrically with respect to a line of symmetry which runs at right angles to the first conductor loop (3) at the crossing point, such that an elongated conductor loop (3) is formed,
    c) in that the second conductor loop (4) is arranged concentrically with respect to the crossing point and symmetrically with respect to the line of symmetry, and
    d) in that a circuit having at least one processing and control device (5) is provided for the magnetic field sensor (2), which device is connected to one or more actuating devices (6) in order to operate locks.
  2. Keyless access system for a motor vehicle (1) according to Claim 1,
    characterized in that the magnetic field sensor (2) is accommodated in the area of a dashboard of a motor vehicle, and at right angles to its vehicle longitudinal axis.
EP98105303A 1997-03-27 1998-03-24 Keyless entry system for a motor vehicle with a magnetic field sensor Expired - Lifetime EP0867971B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19712911A DE19712911C2 (en) 1997-03-27 1997-03-27 Magnetic field sensor for keyless entry system, particularly in motor vehicles, and use of the magnetic field sensor in a circuit of a motor vehicle
DE19712911 1997-03-27

Publications (3)

Publication Number Publication Date
EP0867971A2 EP0867971A2 (en) 1998-09-30
EP0867971A3 EP0867971A3 (en) 1998-10-07
EP0867971B1 true EP0867971B1 (en) 2004-06-02

Family

ID=7824808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98105303A Expired - Lifetime EP0867971B1 (en) 1997-03-27 1998-03-24 Keyless entry system for a motor vehicle with a magnetic field sensor

Country Status (4)

Country Link
US (1) US5940003A (en)
EP (1) EP0867971B1 (en)
JP (1) JPH1123682A (en)
DE (2) DE19712911C2 (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
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 (en) * 1998-11-16 2001-09-07 Valeo Securite Habitacle AUTOMOTIVE VEHICLE EQUIPPED WITH AN IDENTIFIER DEVICE PROVIDING CONTROL OF VEHICLE OPERATING DEVICES WHEN AN IDENTIFIER IS DETECTED IN A PREDETERMINED SPACE
DE10014302A1 (en) * 2000-03-23 2001-10-04 Infineon Technologies Ag Antenna conductor arrangement for Ident system has figure-eight shape with spaced apart sections at intersection point
US6356243B1 (en) * 2000-07-19 2002-03-12 Logitech Europe S.A. Three-dimensional geometric space loop antenna
GB2371137B (en) * 2000-09-19 2004-06-16 Land Rover Uk Ltd A security system
DE10046897B4 (en) * 2000-09-21 2004-02-05 Siemens Ag Transmitting and receiving methods, in particular for detecting an ID transmitter
JP3587185B2 (en) 2001-09-28 2004-11-10 オムロン株式会社 Inductive wireless antenna and non-contact data communication device using the same
DE10159604A1 (en) 2001-12-05 2003-06-12 Atmel Germany Gmbh Method for detecting a forwarding in a contactless data transmission
US6724322B2 (en) 2001-12-21 2004-04-20 Lear Corporation Remote system for providing vehicle information to a user
DE10309600A1 (en) * 2003-03-05 2004-09-16 Delphi Technologies, Inc., Troy security system
CN1852818A (en) * 2003-09-19 2006-10-25 汽车系统实验室公司 Magnetic crash sensing method
US7463987B2 (en) * 2003-09-19 2008-12-09 Takata Holdings, Inc. Magnetic sensing system and method
DE102005013910B3 (en) 2005-03-24 2006-09-28 Siemens Ag Method for a start and access system for a motor vehicle
JP2009507210A (en) 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 Magnetic collision sensor
EP1932213B1 (en) * 2005-09-12 2020-11-25 Sato Holdings Corporation Antenna design and interrogator system
KR101901366B1 (en) 2014-06-24 2018-09-21 구글 엘엘씨 Magnetic controller for device control
DE102015213806A1 (en) 2015-07-22 2017-01-26 Volkswagen Aktiengesellschaft Position determination with a magnetic field sensor for a vehicle
DE102015016553A1 (en) * 2015-12-18 2017-06-22 Bayerische Motoren Werke Aktiengesellschaft Authorization of the use of a motor vehicle
DE102015016552A1 (en) * 2015-12-18 2017-06-22 Bayerische Motoren Werke Aktiengesellschaft Authorization of the use of a motor vehicle
DE102015016558A1 (en) * 2015-12-18 2017-06-22 Bayerische Motoren Werke Aktiengesellschaft Authorization of the use of a motor vehicle
DE102015016557A1 (en) 2015-12-18 2017-06-22 Bayerische Motoren Werke Aktiengesellschaft Authorization of the use of a motor vehicle
DE102016204750A1 (en) 2016-03-22 2017-09-28 Bayerische Motoren Werke Aktiengesellschaft Authorization of the use of a motor vehicle
DE102016204749A1 (en) 2016-03-22 2017-09-28 Bayerische Motoren Werke Aktiengesellschaft Authorization of the use of a motor vehicle
DE102016204746A1 (en) 2016-03-22 2017-09-28 Bayerische Motoren Werke Aktiengesellschaft Authorization of the use of a motor vehicle
DE102016204748A1 (en) 2016-03-22 2017-09-28 Bayerische Motoren Werke Aktiengesellschaft Authorization of the use of a motor vehicle
DE102016111707B4 (en) 2016-06-27 2019-08-14 Volkswagen Aktiengesellschaft Method and system for detecting a relative position of a mobile terminal with respect to a vehicle

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58139010A (en) * 1982-02-15 1983-08-18 Nissan Motor Co Ltd Running guidance device for vehicle
JPS61196080A (en) * 1985-02-21 1986-08-30 日産自動車株式会社 Wireless user discrimination apparatus
JPS6278379A (en) * 1985-09-30 1987-04-10 日産自動車株式会社 Locking and unlocking control apparatus for vehicle
NL8603005A (en) * 1986-11-27 1988-06-16 Philips Nv MAGNETIC RESONANCE DEVICE WITH FLEXIBLE QUADRATURE RINSE SYSTEM.
JP2546842B2 (en) * 1987-06-16 1996-10-23 日産自動車株式会社 Vehicle locking / unlocking control device
US5293160A (en) * 1989-11-02 1994-03-08 Nissan Motor Company, Ltd. Keyless vehicle lock system with distance measuring
DE4005079A1 (en) * 1990-02-17 1991-08-22 Dornier Gmbh Magnetic field gradient tensor measurement - uses five or more planar gradiometers on three or more non-parallel surfaces
US5099247A (en) * 1990-12-14 1992-03-24 General Electric Company Electronic steering of pattern of an antenna system
DE4232827B4 (en) * 1992-09-30 2004-08-05 Siemens Ag Circularly polarized local antenna arrangement for a magnetic resonance imaging device
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 (en) * 1993-10-22 1995-04-26 Texas Instruments Holland B.V. Highly accurate RF-ID positioning system
US5532709A (en) * 1994-11-02 1996-07-02 Ford Motor Company Directional antenna for vehicle entry system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
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
DE19712911A1 (en) 1998-10-08
EP0867971A3 (en) 1998-10-07
EP0867971A2 (en) 1998-09-30
DE59811489D1 (en) 2004-07-08
DE19712911C2 (en) 2001-09-13
JPH1123682A (en) 1999-01-29
US5940003A (en) 1999-08-17

Similar Documents

Publication Publication Date Title
EP0867971B1 (en) Keyless entry system for a motor vehicle with a magnetic field sensor
EP1494048B1 (en) Light curtain
DE69725679T2 (en) Obstacle sensor with collimation and focusing of the emitted waves
EP2225583A1 (en) Locating device
DE2829425C3 (en) Device for measuring accelerations on vibrating bodies
EP2790879B1 (en) Hand tool device
EP1506432A1 (en) Sensor for transmitting and receiving electromagnetic signals
DE4395837C2 (en) Housing an antenna of a remote control in a vehicle
DE102017223471A1 (en) Device for emitting and receiving electromagnetic radiation
DE102012021972A1 (en) Detection device for detecting an object in a detection area on an interior trim part of a motor vehicle, motor vehicle and corresponding method
DE10338536A1 (en) Method for operating a radar sensor
EP2106320A2 (en) High-frequency sensor and machine tool having a high-frequency sensor
DE2140082A1 (en) Autonomous collision warning system for aircraft
EP2833161A1 (en) Optoelectronic measuring device for a motor vehicle and scan sensor for the same
EP1476921B1 (en) Device for emitting and receiving electromagnetic radiation
EP2983008B1 (en) Sensor device with combined ultrasonic sensor and radar sensor for detecting an object in an environment of a motor vehicle and motor vehicle
DE60012122T2 (en) System for determining the orientation of a directional radar antenna
DE102017101791B4 (en) Optoelectronic sensor device for a motor vehicle and motor vehicle
EP0957377A2 (en) Device and method for locating metal objects
DE60302004T2 (en) Vehicle with a device for transmitting signals
DE102018007754A1 (en) Determination of the true directional diagram of an antenna arrangement on a vehicle arranged above a reflecting base area.
DE1286164B (en) Microwave transmission device
DE19702276B4 (en) Motor vehicle door lock with lock system and locking system, which has a device for querying the functional position of the lock cylinder, which operates with Hall sensors
EP3941787B1 (en) Steering column switch for a vehicle
EP1065094A2 (en) Apparatus for detecting the aligment of a child seat, mounted on automotive vehicle seat

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 19990407

AKX Designation fees paid

Free format text: DE FR GB

17Q First examination report despatched

Effective date: 19990602

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RTI1 Title (correction)

Free format text: KEYLESS ENTRY SYSTEM FOR A MOTOR VEHICLE WITH A MAGNETIC FIELD SENSOR

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: FORD GLOBAL TECHNOLOGIES, LLC

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 59811489

Country of ref document: DE

Date of ref document: 20040708

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20040825

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20050303

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20080211

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20080307

Year of fee payment: 11

Ref country code: DE

Payment date: 20080331

Year of fee payment: 11

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090324

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20091130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090324

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091123