WO2012119681A1 - Dispositif émetteur mobile d'un système d'accès d'un véhicule - Google Patents

Dispositif émetteur mobile d'un système d'accès d'un véhicule Download PDF

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Publication number
WO2012119681A1
WO2012119681A1 PCT/EP2012/000524 EP2012000524W WO2012119681A1 WO 2012119681 A1 WO2012119681 A1 WO 2012119681A1 EP 2012000524 W EP2012000524 W EP 2012000524W WO 2012119681 A1 WO2012119681 A1 WO 2012119681A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
access
mobile
enable signal
motion
Prior art date
Application number
PCT/EP2012/000524
Other languages
German (de)
English (en)
Inventor
Herbert TSCHINKEL
Original Assignee
Volkswagen Aktiengesellschaft
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 Volkswagen Aktiengesellschaft filed Critical Volkswagen Aktiengesellschaft
Publication of WO2012119681A1 publication Critical patent/WO2012119681A1/fr

Links

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
    • G07C9/00309—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
    • 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
    • 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
    • G07C2009/00365—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 in combination with a wake-up circuit
    • G07C2009/0038—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 in combination with a wake-up circuit whereby the wake-up circuit is situated in the keyless data carrier
    • 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

Definitions

  • the present invention relates to a method for a mobile transmitting device of a
  • Access system of a vehicle in particular a mobile transmission device for a keyless entry system, a so-called keyless entry system.
  • the present invention further relates to a mobile transmission device of an access system of a
  • Vehicle and an access system of a vehicle Vehicle and an access system of a vehicle.
  • Keyless entry systems for vehicles are also known by the names Keyless Entry or Keyless Go.
  • Such a keyless entry system is an automatic system for unlocking a vehicle without actively using a car key and starting it by, for example, pressing a start button. This is made possible by an electronic
  • Transceiver device that the vehicle user carries with him. As soon as a
  • a vehicle user approaches a vehicle equipped with the keyless entry system to a few meters, finds a signal exchange between the
  • Transceiver which carries the vehicle user, and one
  • Access control device which is installed in the vehicle instead and the
  • Transceiver authenticates with the access control device. After successful authentication, the access control device opens, for example
  • the radio link between the transmitting / Empfangsv0rides and the vehicle can be extended, for example, a distance from the parking lot of the vehicle to the front door of the vehicle user, and so unauthorized opening and starting the vehicle allows.
  • Srdjan Capkun et al. The Department of Computer Science of ETH Zurich, entitled “Relay Attacks on Passive Keyless Entry and Start Systems in Modern Cars,” presents such relay attacks on keyless entry and start systems in modern vehicles, with keyless entry systems from various vehicle manufacturers being considered
  • the vehicle sends a weak signal with a Range of a few meters, which receives a key chain.
  • This key fob if it concerns the correct vehicle, transmits a command which opens the vehicle and allows the ignition.
  • the authors succeeded in transmitting the signal of the vehicle to the key fob with an antenna pair, even if it was much further away from the vehicle than the usual few meters.
  • the object of the present invention is therefore to achieve an improvement in the security of keyless entry systems.
  • this object is achieved by a method for a mobile transmission device of an access system of a vehicle according to claim 1, a mobile transmission device of an access system of a vehicle according to claim 1
  • a method for a mobile transmission device of an access system of a vehicle is provided.
  • the mobile transmission device is understood to mean the unit of a keyless entry system which a user of the vehicle carries with him.
  • the mobile transmitting device may comprise, for example, in the form of a key fob or a key with a transmitting device integrated therein. The method becomes
  • Moving state of the mobile transmitting device detected and an access enable signal to release the access to the vehicle in response to the detected
  • Moving state emitted by the mobile transmitting device For example, by detecting the moving state of the mobile transmitting device, it can be determined whether the mobile transmitting device is in motion or the mobile transmitting device is at rest. For example, the access enable signal may be transmitted only if it has previously been determined that the mobile transmitting device is in motion. This can be a
  • Relay attack as described previously in the introduction, are not performed when the mobile sending device, for example, was stored at home or in the office or is in a suspended coat or a parked bag and therefore is at rest.
  • the mobile transmitting device is in motion, for example, with the user of the vehicle moving toward the vehicle, the access enable signal is transmitted to enable access to the vehicle and keyless entry is enabled without sacrificing comfort.
  • the method further receives a request signal, which is sent from an access control device of the vehicle to the mobile transmission device, and additionally receives the access enable signal in response to the request
  • Request signal sent By transmitting the access enable signal in response to the detected motion state and the request signal from the vehicle, high security and reliability of the access system can be achieved.
  • the method further comprises setting a
  • Transmitter is in motion or whether the mobile transmitting device in the
  • the movement threshold may, for example, be configurable by a user of the mobile transmitting device to adapt a response of the mobile transmitting device to the wishes and needs of the user.
  • the access enable signal is transmitted only when the mobile transmitting device is in motion or within a predetermined range
  • the setting of the predetermined period of time may be customized or performed by the user.
  • Access enable signal is sent even if the mobile transmitting device has been within the predetermined previous period of time, the access to the vehicle is also released when the user, for example, at the moment in which he operates a door handle of the vehicle or a Start button of the vehicle actuated, not moved so that the mobile transmitting device, which he wears, for example, in a bag moves. This will be the access system
  • detecting the state of motion includes detecting a position, orientation, tilt, and / or acceleration of the mobile transmission device. Therefore, to determine whether the mobile transmitting device is in motion or at rest, various sensors may be used, for example an acceleration sensor for detecting the acceleration, an electronic compass for detecting the orientation or tilt, or a global positioning system (GPS) for detecting a current position of the mobile transmitting device. For example, these sensors may be selected according to their power consumption or cost. In addition, these sensors can also be used, for example, for other functions of the mobile
  • Transmitter can be used.
  • a global global GPRS GPRS for Mobile Communications
  • Positioning system can be used in the mobile transmitting device to retrieve the vehicle. It is also possible to use a plurality of the aforementioned sensors in order to enable a detection of the state of motion. Due to the multitude of different possibilities of detecting the state of motion of the mobile transmitting device, the method can be implemented in a particularly reliable, comfortable or cost-effective manner, depending on the application.
  • the release of access to the vehicle comprises opening a door lock of the vehicle and / or an ignition release of an ignition system of the vehicle.
  • the vehicle can be entered and put into operation without the user having to physically insert a key into a corresponding lock. Thereby, a comfortable use of the vehicle can be ensured.
  • a circuit part of the mobile transmitting device is activated as a function of the detected movement state.
  • a circuit portion including a receiver for receiving the request signal may be activated when the transmission device is in motion and deactivated when the mobile transmission device is not in motion for at least a predetermined period of time.
  • Transmitter be extended.
  • the mobile transmission device comprises a detection device for detecting a motion state of the mobile transmission device and a transmitter for transmitting an access enable signal for enabling access to the vehicle. Furthermore, the mobile transmission device comprises a processing unit, which is coupled to the detection device and the transmitter. The processing unit is configured, the transmitter in dependence on the detected state of motion
  • the mobile transmitting device is for carrying out the previously described Method and its embodiments and therefore also includes the advantages described above.
  • the mobile transmitting device comprises an independent unit in the form of a hand-held transmitter.
  • the mobile transmitting device for a user of the vehicle is conveniently housed in, for example, a bag.
  • the present invention provides an access system of a vehicle.
  • the access system includes an access control device installed in the vehicle and capable of issuing a request signal, receiving an access enable signal, and accessing the vehicle in response to the request
  • Enable access enable signal to release access to the vehicle may include, for example, opening a door lock or releasing an ignition system of the vehicle.
  • the release of the ignition system corresponds to enabling a starting of the vehicle or releasing an electrical energy flow i the vehicle.
  • the access system further comprises the transmitting device described above.
  • the access system also includes the advantages presented in connection with the previously described method.
  • the present invention provides another access system of a vehicle.
  • the access system comprises an access control device and a mobile sending device.
  • the access control device is incorporated in the vehicle and capable of issuing a first request signal and receiving a first access enable signal and enabling first access to the vehicle in response to the first access enable signal, as well as issuing a second request signal and receiving a second access enable signal and one second access to the vehicle in response to the second access enable signal.
  • the mobile transmission apparatus comprises a detection device for detecting a motion state of the mobile transmission device, a transmission / reception device for transmitting the first and second access enable signals and for receiving the first and second request signals, and a processing unit coupled to the detection device and the transmitter and which is configured to transmit the first access enable signal in response to the detected motion state and the first prompt signal by means of the transceiver and to transmit the second access enable signal in response to the second prompt signal independent of the detected state of motion by the transceiver.
  • the first access for example, a central locking of the vehicle such that access to the vehicle is protected from relay attacks as previously described.
  • the second access may include, for example, releasing an ignition system of the vehicle so that, even if the mobile transmission device is at rest for a long time within the vehicle, the vehicle may be started. This can improve comfort security of the access system.
  • Fig. 1 shows an access system according to an embodiment of the present invention.
  • FIG. 2 shows a method for a mobile transmission device of an access system according to an embodiment of the present invention.
  • Fig. 3 shows a so-called relay attack on a keyless entry system.
  • FIG 4 shows another method for a mobile transmission device of an access system according to an embodiment of the present invention.
  • FIG. 1 shows an access system 100 for a vehicle 101.
  • the access system 100 includes an access control device 102 installed in the vehicle 101.
  • the access control device 102 installed in the vehicle 101.
  • Access control device 102 is coupled, for example, with a central lock for door locks 103 of vehicle 101 and an engine control 104 of vehicle 101. In response to signals from the access control device 102, the doors of the vehicle 101 are locked or unlocked and start or run of the engine is enabled or prevented.
  • the access system 100 further comprises a mobile transmitting device 105, which is designed, for example, in the form of a key fob, a key grip or a small compact hand-held transmitter.
  • the access system 100 is as a
  • the keyless entry system 100 may set up a bidirectional radio link 106 between the mobile sending device 105 and the access control device 102.
  • the mobile transmission device 105 includes a processing unit 107, a transceiver 108, an antenna 109, and a motion detection device 110.
  • the vehicle transmits a weak signal with a range of only a few meters, which is received by the mobile transmitting device 105. If it is the vehicle 101 that matches the mobile transmitting device 105, the mobile checks
  • the access control device issues in response to the received authentication signal 102 free access to the vehicle 101 and allows starting of the vehicle 101.
  • the mobile transmission device 105 further comprises a battery 111 which the
  • Motion detection device 110 is supplied with electrical energy.
  • the processing unit 107 may disable circuit parts of the mobile transmitting device, such as the transceiver 108, as long as the mobile transmitting device is at rest.
  • step 201 a moving state of the mobile transmitting device 105 is determined by the motion detecting device 110. This can be the
  • Motion detection device 110 for example, acceleration sensors,
  • Tilt sensors or position sensors include. In step 202, it is determined whether or not the mobile transmitting apparatus 105 is at rest.
  • step 201 the mobile transmitting device 105 is at rest.
  • the method continues with step 201.
  • the mobile transmitting device 105 is not located in the
  • the transceiver 108 is activated and checked in step 203, whether from the access control device 102 on to the mobile
  • Sending device 105 is received appropriate request signal.
  • step 201 the process proceeds to step 201. If, on the other hand, the appropriate request signal is received, then in step 204 an access enable signal is transmitted to the access control device 102 via the transmit receive device 108 and the antenna 109. Thereafter, the process proceeds to step 201.
  • the transmit receive device 108 may remain activated as long as the mobile transmit device 105 is in motion.
  • the transmission receiving apparatus 108 may, for example, after a predetermined time of some
  • the attacker 301 may, for example, arrange a first antenna device 302 in the vicinity of the vehicle 101 and a second antenna device 303 in the vicinity of the mobile one
  • Arrange transmitter 105 The two antenna devices 302 and 303 communicate with each other, for example via a cable or another radio link.
  • the first antenna device 302 receives radio signals from the access control device 102 of the vehicle 101 and transmits them to the second antenna device 303, which outputs these radio signals to the mobile transmission device 105.
  • the second antenna device 303 picks up radio signals from the mobile transmitting device 105 and transmits them to the first antenna device 302, which transmits these radio signals to the first antenna device
  • Access control device 102 in the vehicle 101 outputs.
  • the request signal which is also referred to as a "challenge" signal, from the vehicle
  • Access enable signal also referred to as a "response" signal, from the mobile transmitting device 105 via the antenna device 303, 302 to the access control device
  • the mobile transmission device 105 When a legitimate vehicle user approaches the vehicle 101 with the mobile transmission device 105, the mobile transmission device 105 is usually in motion, so that the above-described authentication method for enabling access to the vehicle 101 is performed (Case a) in FIG. 3). , On the other hand, if the rightful user of the vehicle 101 is not in the vicinity of the vehicle 101 but, for example, at home, in the office or in a restaurant, the mobile is
  • Transmitter 105 generally in a dormant state.
  • the mobile transmitting device 105 does not transmit an access enable signal or "response" signal, so that an attacker 301 does not gain access to the vehicle 101. So if a relay attack is performed, this is unsuccessful because the mobile transmitting device 105 is at rest, so no movement is detected and the authentication process is disabled. Thus, they are passed through the antenna devices 302, 303 Authentication requests are not answered and unauthorized opening and starting the vehicle 101 is not possible.
  • the battery life of the battery 111 of the mobile transmitting device 105 can be increased by the method described in connection with FIG. 2 because, on the one hand, there is less transmitting activity and, on the other hand, the transmitting / receiving device 108 can be deactivated in the idle state of the mobile transmitting device 105.
  • a sensor sensitivity of the movement detection device 110 with respect to the intensity of the movement and the time-limited maintenance of the movement can be determined
  • Authentication activity to be configurable after an end of the movement.
  • FIG. 4 shows another method for the mobile transmitting device 105 of the access system 100.
  • Access control device 102 and a suitable evaluation of the signals in the mobile transmitting device 105 may take place a distinction whether the motion detection comes to the evaluation or not. This may be useful, for example, if in addition to opening the vehicle door and a release for starting the engine is realized via the mobile transmitting device 105.
  • the mobile transmission device 105 is detected in the interior by means of suitable antennas and the engine start via e.g. released a starter button in the dashboard.
  • no motion detection is performed, for example, if the user lingers in the vehicle for a long time before he wants to start the vehicle.
  • step 401 it is determined in step 401 whether a request signal has been received. If a request signal has been received, the process continues to step 402.
  • a request signal continues to be awaited in step 401.
  • step 402 it is checked whether the request signal comprises a request for granting an access release for, for example, a central locking of the vehicle. If so, in this case, the method continues with step 403, wherein it is checked whether the mobile transmitting device 105 is at rest. If the mobile transmitting device is not at rest, in step 404 the enabling signal for enabling the central locking is transmitted. Otherwise, the method continues with step 401.
  • step 402 If it has been determined in step 402 that the request signal does not include a request to grant access authorization for, for example, the central locking of the vehicle, At step 405, a check is made as to whether the request signal comprises a request for granting an access release for, for example, an ignition system of the vehicle. If so, in this case, in step 406, the enable signal for enabling the ignition system is sent out regardless of the moving state of the mobile transmission device 105.
  • the method described in FIG. 4 also requires a corresponding modification of the access control device 102 installed in the vehicle.
  • the desired release type central locking or ignition system
  • Access control device 102 ensures that only the prompt signals needed for the current operation are sent, i.e., it is inhibited, for example, sending out a request signal for enabling the ignition system when the

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

Abstract

La présente invention concerne un dispositif émetteur (105) mobile d'un système d'accès (100) d'un véhicule (101). Le dispositif émetteur (105) mobile comprend un dispositif de détection (110) pour détecter un état de déplacement du dispositif émetteur (105) mobile et un émetteur (108) pour émettre un signal d'autorisation d'accès pour donner l'accès au véhicule (101). Le dispositif émetteur (105) mobile comprend également une unité de traitement (107) qui commande l'émetteur (108) en fonction de l'état de déplacement détecté.
PCT/EP2012/000524 2011-03-10 2012-02-06 Dispositif émetteur mobile d'un système d'accès d'un véhicule WO2012119681A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011013605.3 2011-03-10
DE102011013605A DE102011013605A1 (de) 2011-03-10 2011-03-10 Mobile Sendevorrichtung eines Zugangssystems eines Fahrzeugs

Publications (1)

Publication Number Publication Date
WO2012119681A1 true WO2012119681A1 (fr) 2012-09-13

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Application Number Title Priority Date Filing Date
PCT/EP2012/000524 WO2012119681A1 (fr) 2011-03-10 2012-02-06 Dispositif émetteur mobile d'un système d'accès d'un véhicule

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DE (1) DE102011013605A1 (fr)
WO (1) WO2012119681A1 (fr)

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WO2013131737A1 (fr) * 2012-03-06 2013-09-12 Bayerische Motoren Werke Aktiengesellschaft Clé de véhicule sans touches à reconnaissance de gestes
EP2799293A1 (fr) * 2013-05-01 2014-11-05 Delphi Technologies, Inc. Système de démarrage passif et d'entrée passive avec détection de marche de l'opérateur
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