EP0440974B1 - Système de sécurité pour véhicules à moteur - Google Patents

Système de sécurité pour véhicules à moteur Download PDF

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Publication number
EP0440974B1
EP0440974B1 EP90125307A EP90125307A EP0440974B1 EP 0440974 B1 EP0440974 B1 EP 0440974B1 EP 90125307 A EP90125307 A EP 90125307A EP 90125307 A EP90125307 A EP 90125307A EP 0440974 B1 EP0440974 B1 EP 0440974B1
Authority
EP
European Patent Office
Prior art keywords
code signal
signal
transponder
transmitter
security system
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
EP90125307A
Other languages
German (de)
English (en)
Other versions
EP0440974B2 (fr
EP0440974A1 (fr
Inventor
Hans-Dieter Dr. Fournell
Walter Weishaupt
Mario Neudold
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6399407&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0440974(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0440974A1 publication Critical patent/EP0440974A1/fr
Publication of EP0440974B1 publication Critical patent/EP0440974B1/fr
Application granted granted Critical
Publication of EP0440974B2 publication Critical patent/EP0440974B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • 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
    • G07C2009/00198—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 more than one limited data transmission ranges
    • 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
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • G07C2009/00555—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks comprising means to detect or avoid relay attacks
    • 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
    • G07C2009/00793—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 Hertzian waves
    • 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
    • G07C9/00896—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses
    • G07C2009/00928—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses for garage doors
    • 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
    • G07C2209/00—Indexing scheme relating to groups G07C9/00 - G07C9/38
    • G07C2209/60—Indexing scheme relating to groups G07C9/00174 - G07C9/00944
    • G07C2209/63—Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle

Definitions

  • the invention relates to a safety device according to the preamble of patent claim 1.
  • a manually operated switch is provided for triggering the question code signal.
  • This switch is connected to, for example, a door flap, a tailgate or an operating button for a door or the tailgate of the motor vehicle.
  • the switch is actuated manually and the question code signal is triggered with the aid of the stationary transponder.
  • the portable transponder responds with its response code signal.
  • the motor vehicle is unlocked when the response code signal actually comes from a transponder that belongs to the respective motor vehicle.
  • a transponder is to be understood as a transceiver for a wirelessly transmitted radio signal.
  • a code signal comparator is preferably contained in the stationary transponder, which, if the response code signal sent by the portable transponder matches a code signal expected in the stationary transponder, supplies a unlocking or unlocking signal to a unlocking or unlocking device.
  • the stationary and the portable transponder are used only for a tap-proof question-answer dialog as a prerequisite for unlocking the motor vehicle.
  • the two transponders have a connection to a handle provided for using the motor vehicle, e.g. with a door flap, a tailgate or an operating button for a door or the tailgate, only a short range. Further use of the two transponders is not planned.
  • the invention has for its object to provide a security device of the type mentioned, in which further use of the two transmitters is possible while maintaining the security against eavesdropping, in particular for purposes that are related to the use of the motor vehicle.
  • a number of considerations are essential to the invention. On the one hand, security against eavesdropping is guaranteed even if only one of the two transmitters has a short range. It is therefore only necessary to always provide the transmitter for the question signal or the transmitter for the answer code signal with a short range. Alternatively, the transmission power of one transmitter can only be reduced when the code signal is transmitted.
  • the reduction of the range can be achieved in a particularly simple manner with the aid of a code signal emitted as an LF signal, whereas the other signal is an HF signal with a correspondingly long range.
  • the other signals that are emitted by the two transmitters can otherwise have a relatively long range. This ensures that only the question-answer dialog between the stationary and the mobile transponder is bug-proof, while the rest of the transmission is carried out by additional signals of relatively long range. This enables remote control to be ensured over a certain distance of, for example, 50 meters. This remote control can be, for example, switching on the interior lighting - to make it easier to find the motor vehicle in the dark - or closing or opening side windows or roof openings of the motor vehicle.
  • This additional signal which differs from the question or answer code signal of the same transmitter, can also be used, for example, to cause a corresponding device to open a garage door.
  • the additional signal can also be triggered with the aid of an interior switch which is located in the interior of the motor vehicle or can be operated there. If the additional signal is transmitted by the portable transponder, the switch can, for example, activate the stationary transponder to send out a command signal for the portable transponder. The transportable transponder then sends out the additional signal with a correspondingly long range. As shown, both signals of the portable transponder can have a long range or, if the question code signal has a short range, differ in their range.
  • the stationary transponder itself can be sent to send an additional signal with a correspondingly long range, depending on the off design differs from the range of the usual question code signal or this is the same.
  • the portable transmitter itself can also be activated to transmit the additional signal by a switch which is located on the housing of the portable transmitter. It is thus possible to open the garage door by remote control before using the motor vehicle or outside the motor vehicle or to carry out additional functions of the motor vehicle such as switching on the interior light or the described control of windows or sunroofs.
  • the invention can be implemented in two variants.
  • the stationary transponder can transmit its question code signal with a long range and the portable transponder can transmit its response code signal with a short range.
  • the stationary transponder can transmit its question code signal with a short range
  • the transportable transponder can transmit its response code signal with a long range.
  • the portable transponder can also be used as a remote control transmitter with a long range in order to perform certain vehicle functions or operating functions, e.g. on a garage door, trigger from a greater distance.
  • the triggering of the additional remote control functions (HF signal) of the portable transponder via the LF signal of the stationary transponder is only possible in the immediate vicinity of the vehicle, which automatically provides a reference to the vehicle. Unintentional triggering of the additional functions if the portable transponder is at a greater distance from the vehicle is also effectively prevented.
  • the single figure shows schematically the basic structure of the safety device according to the invention.
  • the centerpiece is a portable transponder 1 and a stationary transponder 2, which is arranged in a motor vehicle 3 shown schematically in plan view.
  • the transponder 1 has a transmitter (not shown) for an HF signal and a receiver (also not shown) for an LF signal.
  • the range of the HF signal is approximately 40 to 50 meters, that of the LF signal approximately 1.5 meters.
  • the LF signal is transmitted by the transponder 2 transmitter, also not shown.
  • the stationary transponder 2 has antennas 4 as part of the receiver, which are arranged in the region of the two doors 5 of the motor vehicle 3.
  • an inner switch 7 is also indicated, with which the transponder 2 is caused to send out a command signal.
  • This command signal differs from the question code signal which is transmitted to the portable transponder 1 only in the coding, but not in the range. It causes the portable transponder 1 to transmit an RF signal which is also not different from its response code signal Range, but only differs in coding. With the help of this additional RF signal, for example, the opening of a garage 8 by an indicated drive 9 or the activation of the interior lighting, not shown, of the motor vehicle is initiated.
  • the portable transponder 1 is provided with pushbuttons 11, 12 and 13 with which various additional RF signals are transmitted by the transmitter of the portable transponder 1 without a preceding LF signal from the motor vehicle 3. This makes it possible to also remote control the garage door 8, the central locking in the closed mode or a window regulator or the like.
  • the safety device shown offers a multitude of possibilities.
  • the inner switch 7 is operated.
  • the stationary transponder 2 using an LF command signal, causes the portable transponder 1 to emit a long-range RF signal, with the aid of which the garage door 8 is opened.
  • the inside switch can be a separate switch or a switch that normally has a different function.
  • it can be the interior light switch which, when its position "interior light on” is set, causes the stationary transponder 2 to transmit the LF command signal.
  • the portable transponder 1 can also be triggered separately to transmit the additional signals for the additional functions described with the aid of the pushbutton switches 11, 12 and 13.
  • the security device's tapping security is guaranteed. This is ensured by the short range of one of the two signals exchanged between the transponders 1 and 2, here the LF signal of the stationary transponder 2. Accordingly, it is also possible to ensure this security against eavesdropping by means of a short range of the response code signal emanating from the portable transponder 1 .
  • the quality of the additional HF signal emitted by the portable transponder 1 can also be influenced by an additional switch 14.
  • an additional switch 14 In this way, for example, it can be ensured in one position that with the unlocking function of the central locking only the doors and not the tailgate, i.e. the so-called "hotel closing mode" is set.
  • the pressure switch 12 when the pressure switch 12 is actuated, all the doors and flaps are to be unlocked between the transponders 1 and 2 after the previous question-answer dialog.
  • this dialog can be triggered by operating a door flap or the like. However, it can also be initiated automatically with the aid of a proximity switch, which detects the approach of a possible vehicle user or a portable transponder to the motor vehicle 3.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)
  • Selective Calling Equipment (AREA)

Claims (7)

1. Système de sécurité pour véhicules à moteur, avec un transpondeur (2) fixe installé dans ou sur le véhicule à moteur (3), servant à produire un signal codé d'interrogation et avec un transpondeur transportable (1) qui sert à recevoir le signal codé d'interrogation et à émettre un signal codé de réponse et avec un comparateur de signaux codés contenu dans le transpondeur fixe (2), comparateur qui délivre un signal de déblocage à un système de déblocage quand il y a coïncidence du signal codé de réponse avec un signal codé attendu, système de sécurité caractérisé en ce que seul l'un des émetteurs des deux transpondeurs (1, 2) émet son signal codé correspondant sur une portée relativement grande et en ce qu'au moins le signal codé qui peut être émis sur la portée relativement grande peut être un signal additionnel s'écartant du signal codé d'interrogation ou de réponse.
2. Système de sécurité selon la revendication 1, caractérisé en ce que l'émetteur qui émet son signal codé avec une courte portée, délivre un signal codé à basse fréquence NF, l'autre émetteur par contre délivre un signal codé à haute fréquence HF.
3. Système de sécurité selon la revendication 1 ou 2, caractérisé en ce que l'émetteur du transpondeur transportable (1) émet le signal additionnel, quand le transpondeur fixe (2) est activé pour cela par un interrupteur interne (7) disposé à l'intérieur du véhicule à moteur (3) et/ou pouvant être actionné pour émettre un signal d'ordre.
4. Système de sécurité selon la revendication 1 ou 2, caractérisé en ce que l'émetteur du transpondeur stationnaire (2) émet le signal additionnel, quand il est préparé à cela par un interrupteur interne (7) disposé à l'intérieur du véhicule à moteur (3) et/ou pouvant être actionné.
5. Système de sécurité selon l'une des revendications 1 à 4, caractérisé par un interrupteur (11, 12, 13) disposé sur l'émetteur du transpondeur transportable (1), avec lequel on peut déclencher le signal additionnel.
6. Système de sécurité selon l'une des revendications 1 à 5, caractérisé en, ce que l'émetteur du transpondeur fixe (2) émet son signal codé d'interrogation avec une courte portée.
7. Système de sécurité selon la revendication 6, caractérisé en ce que la portée du transpondeur fixe (2) est courte même lors de l'émission du signal d'ordre.
EP90125307A 1990-02-03 1990-12-21 Système de sécurité pour véhicules à moteur Expired - Lifetime EP0440974B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4003280A DE4003280C5 (de) 1990-02-03 1990-02-03 Sicherheitseinrichtung für Kraftfahrzeuge
DE4003280 1990-02-03

Publications (3)

Publication Number Publication Date
EP0440974A1 EP0440974A1 (fr) 1991-08-14
EP0440974B1 true EP0440974B1 (fr) 1995-05-10
EP0440974B2 EP0440974B2 (fr) 1999-10-06

Family

ID=6399407

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90125307A Expired - Lifetime EP0440974B2 (fr) 1990-02-03 1990-12-21 Système de sécurité pour véhicules à moteur

Country Status (3)

Country Link
EP (1) EP0440974B2 (fr)
DE (3) DE4003280C5 (fr)
ES (1) ES2071738T5 (fr)

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DE4020445C2 (de) 1998-12-03
DE4020445A1 (de) 1992-01-02
DE59009066D1 (de) 1995-06-14
ES2071738T3 (es) 1995-07-01
DE4003280C2 (de) 1998-10-15
EP0440974B2 (fr) 1999-10-06
EP0440974A1 (fr) 1991-08-14
ES2071738T5 (es) 1999-12-16
DE4003280C5 (de) 2007-06-28
DE4003280A1 (de) 1991-08-08

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