WO2012097787A2

WO2012097787A2 - Method for activating a motor vehicle lock system using a mobile communication device

Info

Publication number: WO2012097787A2
Application number: PCT/DE2011/075291
Authority: WO
Inventors: Ulrich Müller
Original assignee: Huf Hülsbeck & Fürst Gmbh & Co. Kg
Priority date: 2010-12-08
Filing date: 2011-11-29
Publication date: 2012-07-26
Also published as: EP2656323A2; WO2012097787A3; CN103380445A; CN103380445B; DE102010061111A1

Abstract

The invention relates to a method for activating a motor vehicle lock system using a mobile communication device (4), wherein: a) as a result of a user input, with which a user indicates a wish to trigger a function of the lock system to the communication device (4), a wake-up signal (7) in the low frequency range is emitted by the communication device (4), which wake-up signal (7) is received by an ID signal generator (3) of the motor vehicle (1) which is located in the vicinity and triggers a wake-up routine in said ID signal generator (3), b) a first RF radio communication (8) is carried out between the communication device (4) and the ID signal generator (3), in which RF radio communication (8) the communication device transmits to the ID signal generator the request to trigger the function of the lock system, c) the ID signal generator (3) initiates and carries out a second RF radio communication (9) with a motor-vehicle-side control unit (2), in which RF radio communication (9) identification codes and signals for triggering the function of the lock system are transmitted to the control unit (2), and d) the execution of the function of the lock system is controlled by the control unit (2).

Description

The invention relates to a method for actuating a motor vehicle locking system using a mobile communication device

Motor vehicle locking system using a mobile Kom ^¬ communication device, such as a mobile phone.

From WO 2007/009453 A2, such a method be ^¬ known in which a mobile terminal, for example a Mobilte- lephone, instead of a conventional ID transmitter (also electronic key called) is used to communicate directly with a vehicle side control unit as soon as it reaches its reception range. The Mobilte ^¬ phone transmits to the control unit of the motor vehicle all the necessary information that lead, for example, to unlock the vehicle doors. For the method described in this document for actuating a motor vehicle locking system, it is necessary to produce the required security, that is, to prevent access by unauthorized persons, that the mobile phone contains all safety-related information (codes) and all safety features (including circuitry type ), which otherwise has an ID transmitter. The method described in the document has security-related disadvantages. In particular, unlike the traditional ID transmitter, the mobile phone offers a number of additional interfaces to data communication links that allow unauthorized persons to gain access to data inside the mobile device and thus endanger the security of the vehicle locking system.

Based on this prior art, the present invention seeks to provide a method for operating a power ^¬ vehicle locking system, in which a mobile commu ^¬ nikationsgerät can be used without causing the Si ^¬ security of the locking system is compromised.

This object is achieved by a method having the features of claim 1. In the inventive method for operating a motor vehicle locking system using a mobile Kom ^¬ munikationsgerätes is first due to user input, with which a user indicates to the communication device a request for triggering a function of the closing system (Example ^¬ as the desire to unlock the doors), emitted by the communication device, a wake-up signal in the LF range, which is received by a nearby ID transmitter of the motor vehicle and triggers a wake-up routine in this. Thereafter, a first RF radio communication between the communication device and the ID transmitter is performed, in which the communication device transmits the desire to trigger the function of the locking system to the ID transmitter. The ID transmitter initiates a second RF radio communication with a motor vehicle-side control unit and performs this. In this case, the control unit identifica ^¬ approximately codes and signals are transmitted for triggering the function of the Schließsys ^¬ tems. Finally, an off ^¬ execution of the function of the locking system is controlled by the control unit.

In the first step, the mobile communication device, for example the mobile

Wake-up signal emitted, which is comparable to that wake-up signal, which is emitted, for example, from the motor vehicle-side ^¬ term control unit, provided that the hand of Benut ^¬ zers engages behind a equipped with a proximity sensor door handle. This alarm signal wakes up the ID transmitter. The simultaneous presence of the conventional ID transmitter and the mobile telephone in the vicinity of the motor vehicle to which the operator wishes to gain access increases the security against the sole use of a mobile telephone. By maintaining the ID transmitter also required for access to the motor vehicle secure communica ^¬ tion in its original form is preserved without can take the mobile phone or a mobile phone of a third party direct influence on it. Only the presence of the original ID transmitter in the vicinity of the motor vehicle, thus usually the presence of the authorized operator, allows access to the motor vehicle by means of a mobile phone. Even if, if an unauthorized person intervened in the communication between the mobile communication device and the ID transmitter, this would only allow him access to the motor vehicle, even if the ID transmitter is in an access-relevant proximity to the motor vehicle.

In the function of the locking system, the user wishes to trigger, it may be, for example, the unlocking or locking of individual or all door locks, unlocking or locking a tailgate or, for example, a so-called comfort opening or comfort closing. According to the invention, it is necessary to equip the mobile communica ^¬ tion device having a transmit interface for radiating an alarm signal in the LF range. On the other hand, for the first RF radio communication, an interface can be used that is conventionally already present in mobile telephones, for example a Bluetooth interface. Alternatively, an NFC interface (Near Field Communication) would be conceivable.

In an advantageous embodiment of the method according to the invention, the alarm signal indicates to the ID transmitter that the mobile communication device desires the first RF radio communication with the ID transmitter. This has the advantage that the ID transmitter can recognize on the basis of the information transmitted with the wake-up signal whether it is a wake-up signal of the motor vehicle-side control device or a wake-up signal of the mobile communication device. An advantageous exporting ^¬ approximate shape is characterized in that the ID transmitter transmits in response to the wake-up signal to the communication apparatus at the start of the first RF communication an authorization signal, after which the communication device transmits the ID transmitter to request for triggering the function of the locking system. The authorization signal may, for example, contain a code which can only be recognized by an authorized mobile communication device in such a way that the latter in turn can transmit a code for transmitting the request to trigger the function of the locking system. In this way it is for example possible to advance in the software of the phone or the walls ^¬ ren mobile communication device codes and / or supply and disposal To deposit encryption algorithms, which ensure that only the authorized mobile communication device can communicate with the belonging to ^¬ ID transmitter.

Preferably, the LF wake-up signal is at a carrier frequency in the range of 10 to 300 kHz, for example, at 125 kHz which eclip ^¬ irradiated. The second RF-radio communication between the ID transmitter and the motor vehicle-side control unit is carried out at the conventional, customary frequencies, for example at a carrier frequency in the range of 10 to 1000 MHz.

A mobile communication device for use in a ^¬ Ver drive for actuating a motor-vehicle locking system of the above type is according to the invention characterized by the features of the on ^¬ entitlement. 7 It contains an LF

Communication module with an LF transmission coil, an LF transmitter and a control device for generating and emitting a

LF wake-up signal for an ID transmitter of a motor vehicle and ei ^¬ ne communication module for performing the first RF radio communication with the ID transmitter. The mobile communication device is, for example, a mobile phone, a PDA or a smartphone.

Advantageous and / or preferred developments of the invention are characterized in the subclaims.

In the following the invention will be explained in more detail with reference to a preferred embodiment shown in the drawing.

FIG. 1 shows a schematic diagram of an arrangement for carrying out the method according to the invention.

FIG. 1 shows a schematic diagram of an arrangement with the aid of which the method according to the invention can be carried out. A motor vehicle 1 contains, inter alia, a control unit 2. The control unit is used inter alia, the locking system of the

To actuate motor vehicle 1, in particular to generate and transmit the control signals required for unlocking or locking the vehicle doors to the door locks. The motor vehicle-side control device 2 is connected to transmitter and receiver circuits, by means of which it can communicate, for example, with an ID transmitter 3. Normally, the motor vehicle-side control unit is equipped with an LF transmitter (the For example, in the outside door handles accommodated transmitting coils includes), with the aid of which it can radiate a wake-up signal in the LF frequency range, for example at 125 kHz. The normally-save energy to increase battery life in a sleep mode ID transmitter 3 contains the LF reception circuits that remain active at least zeitwei ^¬ lig also in idle mode. As soon as the ID transmitter 3 receives a wake-up signal, it starts a wake-up routine during which, inter alia, transmitting and receiving devices for communication in the RF frequency range are activated. Then the ID transmitter 3 can exchange radio signals with the motor vehicle-side control device 2 in the RF frequency range, which is represented by the arrows 9. In this communication coded Signa ^¬ le are exchanged between the ID transmitter and the vehicle side control unit 2, so that the motor vehicle-side control unit 2 can determine from the received signals, whether the ID transmitter 3 of the authorized user in the vicinity of the motor vehicle 1 is located. If this is the case, for example, the desired door unlocking is performed.

The communication of the coded signals for the purpose of unlocking the motor vehicle doors can usually be triggered by two scenarios. On the one hand, it is conceivable that the operator simply actuates one of the keys located on the ID transmitter 3 (the keys are schematically represented by squares in FIG. 1). If the operator, for example, when CLOSED ^¬ senem vehicle 1, the key for unlocking the doors, so the communication between the ID transmitter 3 and the motor vehicle 2 is triggered by this operation, during which the authorization of the ID transmitter 3 is determined so that the door is then unlocked if the authorization is available. Ande ^¬ hand, may simply be stored only in the clothing or a bag carried by the operator of the ID transmitter. Then, when for example, the hand of the operator grips the exterior door handle rear ^¬, this approach of the operator's body part by an arranged in the door handle or its nearby proximity sensor (for example, a capacitive proximity sensor) ER- sums. The sensor evaluation circuit sends a signal to the vehicle-side control device 2, which then activates the LF transmitter and for outputting a wake-up signal LF, ^¬ example, via an arranged in the outside door handle transmitter coil veran ^¬ initiated. The wake-up signal is received by the operator's ID transmitter located in the garment or carry-on bag, causing its activation. Then again the RF communication between the ID transmitter 3 and the control unit 2 takes place, in the course of which the release of the door lock is triggered.

According to the invention, a third way to activate the radio dialogue between the ID transmitter 3 and the vehicle-side control unit 2 is now provided. Instead of a method for actuating a motor vehicle locking system, in which simply the buttons arranged on the ID transmitter 3 are actuated by the operator, it is provided according to the invention that an operator who carries the ID transmitter in his clothing or a bag with him , ^Triggers the function of the locking system by a user input to a ^{mitgeführ ¬} th mobile communication device (for example, a mobile phone or a PDA).

The mobile communication device 4 has for this purpose

LF transmission circuit 5 on. Further, the mobile communication apparatus 4 ^¬ a transmitting and receiving circuit 6 for a DIRECT BI ^¬ dimensional communication in the HF range. If the user of the mobile communication device 4 wishes to trigger a function of the motor vehicle locking system, for example the entrie ^¬ rules of a door, it performs a corresponding input on Kommu from ^¬ nikationsgerät, for example by pressing a specified ^differently surrounded key combination or by selecting an on a screen of the communication device 4 displayed element. Darauf- towards causes a controller of the mobile Kommunikati ^¬ onsgeräts 4, the transmitter circuit 5 to emit an alarm signal. This radiation of the wake-up signal is illustrated by the arrow 7 in FIG. The nearby ID transmitter 3 is awakened by the wake-up signal. Subsequently, a bi- directional communication, that is veran by the arrows 8 ^¬ illustrates, between the ID transmitter 3 and a Kommunikati ^¬ onsschnittstelle 6 of the communication device 4, for example a Bluetooth interface take place. As part of this communication, the communication device transmits to the ID transmitter signals that encode the desire to trigger the function of the locking system. The controller contained in the ID transmitter evaluates these signals and then controls a corresponding communication with the motor vehicle-side control unit 2, which finally causes the motor vehicle-side control unit 2 to control the corresponding function in the motor vehicle 1, ie to unlock the desired door, for example.

In the system according to the invention, the system consisting of ID transmitter 3 and motor vehicle-side control devices 2 remains equipped with all the functions which also comprise the conventional system. The additional functionality to the Emp ^¬ start of the originating from the mobile communication device Wecksig- Nals and for communication with the communication device, wherein ^¬ play, via Bluetooth is added to the ID transmitter. 3 An additional energy consumption does not result because the additional functionality is switched off in idle mode and only - as before - the circuits required for waking (LF receive circuits) remain activated. It is essential that a conventional mobile communication device, for example a mobile phone, a PDA or a smartphone, be equipped with the additional hardware of an LF transmitter. The additional functionality can affect existing hardware, such as a Bluetooth interface called support and erfor ^¬ changed only additional software.

Claims

claims

A method of operating a motor vehicle locking system using a mobile communication device (4), wherein:

a) is emitted from the communication device (4), a wake-up signal (7) in the LF range, which is from a nearby in the vicinity of a user input, with which a user to the communication device (4) indicates a desire to trigger a function of the locking system ID transmitter (3) of the motor vehicle (1) will catch emp ^¬ and triggers this a Aufweckroutine,

b) a first RF radio communication (8) is carried out between the communication device (4) and the ID transmitter (3), in which the communication device transmits to the ID transmitter the request to trigger the function of the locking system,

c) the ID transmitter (3) initiates and executes a second RF radio communication (9) with a control device (2) on the motor vehicle, in which identification codes and signals for triggering the function of the locking system are transmitted to the control device (2), and

d) by the control unit (2) an execution of the function of the locking system is controlled.

2. The method according to claim 1, characterized in that with the wake-up signal (7) the ID transmitter (3) is displayed that the communication device (4) wishes the first RF radio communication with the ID transmitter.

3. The method according to claim 2, characterized in that the ID transmitter (3) in response to the alarm signal the Kommunikati ^¬ onsgerät (4) at the beginning of the first RF radio communication (8) transmits an authorization signal, whereupon the communication ^¬ device (4) the ID transmitter (3) transmitted the desire to trigger the function of the locking system.

4. The method according to any one of claims 1-3, characterized in that the first RF radio communication (8) is a blue ^¬ tooth communication.

5. The method according to any one of claims 1-4, characterized in that the LF wake-up signal (7) at a carrier frequency in the range of 10 to 300 kHz, preferably at 125 kHz, abge ^¬ is emitted.

6. The method according to any one of claims 1-5, characterized in that the second RF radio communication (9) is carried out at a carrier frequency in the range of 10 to 1000 MHz.

7. A mobile communication device (4) for use in a method for actuating a motor vehicle locking system according to one of claims 1-6, comprising

an LF communication module (5) with an LF transmission coil, an LF transmitter and a control device for generating and emitting an LF wake-up signal (7) for an ID transmitter (3) of a motor vehicle (1) and

a communication module (6) for executing the first RF radio communication (8) with the ID transmitter (3), wherein the communication device (4) the ID transmitter (3) transmits the desire to trigger the function of the locking system.

8. Mobile communication device according to claim 7, characterized ge ^¬ indicates that it is a mobile phone, a PDA or a

Smartphone is.