SECURITY SYSTEM FOR A VEHICLE

Abstract

The invention relates to a security system (1) for a vehicle (2), in particular for integration into the vehicle (2), for locating a mobile device (10) in a surrounding area of the vehicle (2), comprising a transceiver arrangement (100) for providing vehicle communication (FK) of the vehicle (2) with at least one other vehicle (2) in the surrounding area, a processing arrangement (200) for performing the localization of the mobile device (10) at least partially on the basis of the vehicle communication (FK).

Claims

1. A security system for a vehicle, for locating a mobile device in a surrounding area of the vehicle, comprising: a transceiver arrangement for providing vehicle communication of the vehicle with at least one other vehicle in the surrounding area, a processing arrangement for performing the localization of the mobile device at least partially on the basis of the vehicle communication.

2. The security system according to claim 1, characterized in that, the transceiver arrangement is additionally configured for direct device communication between the vehicle and the mobile device, the processing arrangement being in data communication with the transceiver arrangement in order to directly locate the mobile device on the basis of the device communication, and in order to perform at least one of the following functions for the location on the basis of the vehicle communication: Plausibility check of the direct localization, At least supplement or correct the direct localization to increase the accuracy of the localization, Indirect localization of the mobile device via the at least one other vehicle.

3. The security system according to claim 1, characterized in that, the transceiver arrangement has at least one transceiver unit which is configured as a radio, preferably as an HF or LF or NFC or UWB or WLAN or Bluetooth.

4. The security system according to claim 1, characterized in that, the transceiver arrangement is configured to receive device information via the vehicle communication about at least one further location of the mobile device by the at least one further vehicle, and the processing arrangement is configured to perform a vehicle localization of the at least one further vehicle in order to localize the mobile device, in order to compare the device information with a result of the vehicle localization, in order to perform the localization of the mobile device itself indirectly using the device information.

5. The security system according to claim 1, characterized in that, the processing arrangement is configured to at least localize the mobile device (10) or to locate the at least one other vehicle (2), to evaluate at least the vehicle communication (FK) or a device communication (GK), the evaluation providing at least one of the following detections: at least a distance measurement of a distance of the mobile device or the further vehicle relative to the vehicle, at least a direction detection of a direction of the mobile device or the further vehicle relative to the vehicle, wherein preferably the evaluation for this purpose provides at least a signal evaluation, preferably measurement of at least a signal transit time or a signal strength, or a reception angle determination of a communication signal received by at least the vehicle communication or by the device communication.

6. The security system according to claim 1, characterized in that, the vehicle is part of the security system, and the transceiver arrangement is arranged on the vehicle, and preferably a plurality of transceiver units of the transceiver arrangement are arranged at different positions on the vehicle in order to provide in each case at least the vehicle communication or a device communication in a position-specific manner.

7. The security system according to claim 1, characterized in that, the processing arrangement is configured to evaluate at least the vehicle communication or a device communication of at least one transceiver unit of the transceiver arrangement as a function of a position of the respective transceiver unit and thus in a position-specific manner, preferably by at least evaluating the signal strength at the respective transceiver unit or by comparing different signal strengths at different transceiver units (110.

8. The security system according to claim 1, characterized in that, the transceiver arrangement is configured to provide a network, preferably a Bluetooth network, with the vehicle and the at least one further vehicle each as a participant of the network, in which the transceiver arrangement of the vehicle is configured as a master of the network in order to control the communication of the network for the further participants.

9. The security system according to claim 1, characterized in that, the mobile device is a part of the security system and is configured as a mobile radio device or as a mobile identification device specific to the vehicle, and is configured to provide an authentication on the vehicle for at least enabling or triggering a security-relevant vehicle function, preferably by transmitting a device response via a communication signal of the device communication.

10. A vehicle comprising a security system for locating a mobile device in a surrounding area of the vehicle, comprising a transceiver arrangement for providing vehicle communication of the vehicle with at least one other vehicle in the surrounding area, a processing arrangement for performing the localization of the mobile device at least partially on the basis of the vehicle communication.

11. A method for locating a mobile device by a vehicle in a surrounding area of the vehicle, whereby the following steps are performed: a) Provision of a vehicle communication of the vehicle with at least one further vehicle in the surrounding area, b) Performing the localization of the mobile device at least partially by means of the vehicle communication.

12. The method according to claim 11, characterized in that, step a) comprises at least one of the following steps: Receiving at least one piece of device information about a location of the mobile device relative to the at least one further vehicle, determined by the at least one further vehicle by means of at least one further location of the mobile device, Receiving device information about a location of the mobile device relative to one of the further vehicles, determined by the one further vehicle by means of a further localization of the mobile device, and transferred via at least one other of the further vehicles, Receiving a device response with authentication information of the mobile device, which is received directly by the or one of the further vehicles from the mobile device, and optionally transferred via at least one other of the further vehicles via a further vehicle communication, transmitting an alarm signal to the mobile device to initiate transmission of the device response by the mobile device to the at least one other vehicle, where reception is in each case via the vehicle communication.

13. The method according to claim 11, characterized in that, the vehicle in the form of a master vehicle generates a network with the other vehicles each as slave vehicles, in which at least one of the slave vehicles: at least device information about a location of the mobile device is determined, or a device response is received from the mobile device, and in each case being transferred among each other in order to transmit at least the device information or device response to the master vehicle via the vehicle communication, in order to thus increase the range of the master vehicle for at least locating the mobile device or receiving the device response.

14. The method according to claim 11, characterized in that, step b) comprises at least one of the following steps: Direct location of the mobile device by the vehicle to provide direct device information about a location of the mobile device relative to the vehicle, Indirect localization of the mobile device by evaluating indirect device information received by the vehicle communication, wherein preferably the indirect device information is specific to the location of the mobile device relative to the at least one further vehicle, comparing the received indirect device information with the direct device information in order to perform the localization, preferably to at least increase the accuracy of the localization or to check plausibly of the location, Performing a distance measurement of a distance of at least the mobile device or the further vehicle relative to the vehicle, Performing a directional detection of a direction of at least the mobile device or the further vehicle relative to the vehicle Evaluation of a communication signal of at least the vehicle communication or the device communication for distance measurement, preferably by signal evaluation, preferably measurement of at least a signal transmit time or signal strength, Evaluation of a communication signal of at least the vehicle communication or of the device communication for direction detection, preferably by means of a reception angle determination.

15. The method according to claim 11, characterized in that, a security system for a vehicle, for locating a mobile device in a surrounding area of the vehicle, comprising a transceiver arrangement for providing vehicle communication of the vehicle with at least one other vehicle in the surrounding area, a processing arrangement for performing the localization of the mobile device at least partially on the basis of the vehicle communication is provided for performing the method.

16. The method according to claim 15, characterized in that, at least step a) being performed by the transceiver arrangement or step b) being performed by the processing arrangement of the security system.

17. The security system according to claim 1 for integration into the vehicle.

18. The security system according to claim 3, characterized in that, the transceiver arrangement has at least one transceiver unit which is configured as a Bluetooth low-energy interface, in order to provide the vehicle communication networked with a plurality of different further vehicles.

19. The security system according to claim 7, characterized in that, to perform a reception angle determination of a communication signal (S) of at least the respective vehicle or device communication.

20. The method according to claim 14, characterized in that, step b) comprises evaluation of a communication signal of the vehicle communication or of the device communication for directional detection by a position-specific evaluation of different signal strengths at different transceiver units of the vehicle.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

[0071] Further advantages, features and details of the invention are given in the following description, in which, with reference to the drawings, embodiments of the invention are described in detail. The features mentioned in the claims and in the description may be each essential to the invention individually or in any combination. Is shown in:

[0072] FIG. 1 A schematic top view of a vehicle with a security system with a transceiver unit according to the invention,

[0073] FIG. 2 Additional schematic top view of a vehicle with a security system according to the invention with two transceiver units,

[0074] FIG. 3 An additional schematic top view of a vehicle with a security system according to the invention with more than two transceiver units,

[0075] FIG. 4 An additional schematic top view of a vehicle with a security system according to the invention to illustrate a disturbance of communication,

[0076] FIGS. 5, 6 and 7 further schematic top views of a vehicle with a security system according to the invention and other vehicles to illustrate networked communication,

[0077] In the following figures, the identical reference signs are used for the same technical characteristics even from different embodiments.

DESCRIPTION OF SPECIFIC EMBODIMENTS OF THE INVENTION

[0078] FIGS. 1 to 7 show a top view of a vehicle 2the master vehiclewhich has a security system 1 in accordance with the invention. Accordingly, security system 1 is suitable for integration into vehicle 2 in order to localize a mobile device 10 in a surrounding area of vehicle 2. For this purpose, the security system 1 comprises a transceiver arrangement 100 in order to provide a vehicle communication FK of the vehicle 2 with at least one further vehicle 2the slave vehiclein the surrounding area. This possibility for vehicle communication FK is shown in FIGS. 4 to 7. Furthermore, security system 1 comprises a processing arrangement 200 to perform the localization of the mobile device 10 at least partially based on the FK vehicle communication.

[0079] As illustrated in FIGS. 1 to 3, the transceiver arrangement 100 can also be configured for direct device communication GK of the vehicle 2 with the mobile device 10, whereby the processing arrangement 200 is in data communication with the transceiver arrangement 100 in order to directly locate the mobile device 10 using the device communication GK, and possibly also in order to perform at least one of the following functions for the location using the vehicle communication FK: [0080] Plausibility check of the direct localization, [0081] Supplementing and/or correcting the direct localization to increase the accuracy of the localization [0082] indirect location of the mobile device 10 via the at least one other vehicle 2.

[0083] If, as shown in FIG. 1, the transceiver arrangement 100 has only a single transceiver 110 (satellite), the location of the mobile device 10 may be relatively inaccurate. By locating the mobile device 10 directly using the device communication GK, the information that the mobile device 10 is at a certain distance from vehicle 2 can then be determined. However, since no directional information is determined, the localization provides a large number of possible locations 301 of the mobile device 10. The distance determined is visualized by a dashed circle that represents the possible locations 301 of the mobile device 10. For example, the dashed line is an equipotential line that represents a certain signal strength of the device communication GK. The signal strength of a communication signal S of the device communication GK is therefore dependent on the distance of the mobile device 10 from the transceiver unit 110.

[0084] The information about the distance may be sufficient to ensure authentication of the mobile device. However, in order to determine the exact location 300 of the mobile device 10, or to check the plausibility of the determined distance, the vehicle communication FK can be used additionally for localization. In this way, the authentication security can be further improved.

[0085] FIGS. 2 and 3 are intended to further illustrate the principle in which the use of further transceiver units 110 (of the master vehicle 2, alternatively or additionally also further transceiver arrangements 100 of the slave vehicles 2, then provided by the vehicle communication FK) can improve localization. Thus, when using two transceiver units 110 according to FIG. 2, the possible location 301 of the mobile device 10 can already be clearly limited. The use of at least three transceiver units 110 in FIG. 3 can even provide the exact location 300 of mobile device 10. This requires that the localizations by the individual transceiver units 110 (e.g. the information about the respective signal strength) are compared with each other, e.g. by the processing arrangement 200. Functionally, the exact position 300 of the mobile device 10 can also be determined, as already mentioned, by transmitting localization information about further localizations of the mobile device 10 by further vehicles 2 via the vehicle communication FK to the master vehicle 2, where they are compared with each other like the localizations by the individual transceiver units 110.

[0086] Furthermore, as shown in FIGS. 1 to 3, it may be possible for vehicle 2 (master vehicle) to have a monitoring arrangement 210 to detect a request for access. In this case, the monitoring arrangement 210 may have, for example, a proximity sensor, such as a capacitive sensor. This is arranged, for example, in the area of the tailgate (e.g. in the bumper) or in the door handle to detect the approach of a user. This approach is then interpreted as a request for access in order to initiate the security-relevant function.

[0087] FIG. 4 shows that the detection of the access request can initiate authentication, advantageously by transmitting a request signal S.1, in particular an alarm signal S.1, to the mobile device 10, in which case the mobile device 10 can act as an ID transponder by transmitting a response signal S.2 when the request signal S.1 is received. This response signal S.2 can basically be received via the device communication GK directlyi.e. directlyby vehicle 2 (as device response) and/or by at least one other vehicle 2 (also as device response). This device response can include authentication information, such as a code or the like.

[0088] However, it is possible that the other vehicles 2, e.g. moving and parking vehicles 2, may interfere with the device communication GK. In this case the response signal S.2 is transmitted to vehicle 2 as a disturbed signal S.3. In order to still perform the authentication and/or localization of the mobile device 10, one of the other vehicles 2 in the surrounding area can also receive the response signal S.2. This can be transferred to vehicle 2 via vehicle communication FK.

[0089] According to FIG. 5, this principle can be extended by the fact that the vehicle communication FK is not only performed between another vehicle 2 and vehicle 2, but that a networked transmission between several vehicles 2 takes place. Each of the vehicles 2, 2 can thereby acquire an image of its surrounding area by evaluating the FK vehicle communication with the other vehicles. Thus, each of the vehicles 2, 2 can also localize its neighboring vehicles 2, 2 via the vehicle communication FK (e.g. via the signal strength or a ToF analysis). Since there is no change in position for parked vehicles 2, 2, several localizations can be averaged to improve accuracy. It is also possible to determine the angle or direction during localization for each vehicle if the vehicle has more than one transceiver 110.

[0090] According to FIG. 6, the networked transmission may comprise a transmission of the response signal S.2, but alternatively or additionally also the transmission of a device information about at least one further localization of the mobile device 10 by the at least one further vehicle 2. By transmitting the response signal S.2, vehicle 2 can detect this response signal S.2 even if it is actually outside the communication range of the mobile device 10. Thus, the other vehicles 2 offer an extension of the signal transmission.

[0091] FIG. 7 shows that networked transmission can also enable the authentication to be secured by vehicle 2. In particular, a relay station attack can be used to attempt to use the RSA extension S.4 to transmit the response signal S.2 from mobile device 10 to vehicle 2 even over distances that are not actually intended for authentication. Localization via vehicle communication FK can prevent this, as the distance to vehicle 2 can be determined very reliably in this way.

[0092] The above explanation of the embodiments describes the present invention exclusively in the scope of examples. Of course, individual features of the embodiments can be freely combined with each other, if technically reasonable, without leaving the scope of the present invention.

LIST OF REFERENCE SIGNS

[0093] 1 Security system [0094] 2 Vehicle, master vehicle [0095] 10 Mobile device, identification transponder, mobile radio [0096] 2 Other vehicle, slave vehicle [0097] 100 Transceiver arrangement [0098] 110 Transceiver unit, Bluetooth interface [0099] 200 Processing arrangement [0100] 210 Monitoring arrangement [0101] 300 Location of the mobile device [0102] 301 Possible locations of the mobile device [0103] 100 Further transceiver arrangement [0104] FK Vehicle communication [0105] GK Device Communication [0106] S Communication signal [0107] S.1 Request signal, alarm signal [0108] S.2 Response signal [0109] P.3 Disturbed signal [0110] P.4 RSA extension