Method for assisting in the guidance of driving a motor vehicle and system

Abstract

Method for Assisting Driver Guidance in a Motor Vehicle and System. In this method for assisting driver guidance in a motor vehicle (2), data is transmitted between a communication device (8) located outside the vehicle and the vehicle. The communication device sends the vehicle a request for vehicle-specific data. The vehicle sends the vehicle-specific data in encrypted form to the communication device. The vehicle-specific data sent by the vehicle is received by the communication device and evaluated. Response data is sent to the vehicle, received, and evaluated. Signaling is performed to a vehicle user. Application to vehicle driver guidance systems 1 2. Figure for the abstract: Figure 1

Description

Title of the invention: Method for assisting in the guidance of driving a motor vehicle and system

[0001] The invention relates to a method for assisting in the guidance of a motor vehicle, in which data can be transmitted bidirectionally between a communication device located outside the motor vehicle and the motor vehicle during the passage of the motor vehicle in front of the communication device. The invention further relates to a system for assisting in the guidance of a motor vehicle.

[0002] Methods are known in which vehicles equipped with a suitable vehicle unit communicate with a roadside communication device using that vehicle unit and receive vehicle control instructions from the communication device. Thus, vehicles entering an area where the communication device is located can communicate with the communication device and can be controlled by means of instructions from the communication device. The communication device signals vehicle-related information to an associated decentralized computing unit, whereupon the decentralized computing unit generates a vehicle control instruction and sends it back to the roadside communication device. The communication device then sends the vehicle control instruction to the corresponding vehicle.

[0003] A method is also known in which dangerous locations in a traffic area are detected and transmitted to a control center. A danger message relating to a dangerous location can be transmitted by the control center, via guidance beacons fixedly placed in an area of ​​a roadway, to vehicles heading towards the dangerous location and displayed, for example, in the vehicle.

[0004] The objective of the invention is to improve the quality of guidance during the driving of a motor vehicle in a method of the type described above. The invention also aims to provide a corresponding system to assist in the driving of a motor vehicle.

[0005] The first objective is achieved according to the invention by a method of the aforementioned type, the method further comprising that:

[0006] - the communication device sends a request to the motor vehicle relating to vehicle-specific data;

[0007] - the motor vehicle, in the event that vehicle-specific data is available requested, sends the requested vehicle-specific data in encrypted form to the communication device;

[0008] - the encrypted vehicle-specific data sent by the motor vehicle are received by the communication device;

[0009] - the received data are evaluated;

[0010] - depending on the result of the evaluation of the data sent by the vehicle automobile, response data is sent by the communication device to the motor vehicle;

[0011] - the response data sent by the communication device are received and assessed by the motor vehicle;

[0012] - depending on a result of the evaluation of the response data sent by the communication device, a signal to a user of the motor vehicle takes place.

[0013] The invention relates to a method in which specific, i.e., individual, data from the motor vehicle, which are originally present and possibly even exclusively within the motor vehicle itself, form the basis for signaling to the user. Therefore, it is particularly important that the motor vehicle sends the vehicle-specific data to the communication device in encrypted form. Preferably, the response data is also sent to the motor vehicle in encrypted form by the communication device.

[0014] In the method according to the invention, it is particularly advantageous that, in particular, vehicle-specific data relevant in terms of safety and not intended for public access be evaluated outside the vehicle, for example, that its content be checked, and that, on this basis, targeted signage be provided to the vehicle user. Advantageously, it is thus possible to also incorporate other information, for example from other vehicles in a road environment or, for example, road network information, into the signage provided to the vehicle user.

[0015] Advantageously, thanks to the invention, critical safety data (for example, whether the motor vehicle is a vehicle for transporting dangerous goods or not, and / or what type of vehicle load it is) can also be transmitted and evaluated. In this context, it is important that the motor vehicle sends the requested vehicle-specific data to the communication device in encrypted form and that, preferably, the response data is also sent by the communication device to the motor vehicle in encrypted form.

[0016] The communication device located outside the motor vehicle may, for example, be a fixed communication device, such as a beacon installed at the roadside, or a mobile communication device, such as a portable device, operated, for example, by a person in charge of control at a control office and located at the roadside. During the execution of the method according to the invention, it is conceivable not only that the motor vehicle may be stationary but also that the motor vehicle may pass in front of the communication device.

[0017] The vehicle-specific data requested by the communication device in the motor vehicle is data that is specific to the motor vehicle, i.e., individual. Such data may, for example, indicate that the motor vehicle is a motor vehicle transporting dangerous goods. The vehicle-specific data is therefore preferably determined data.

[0018] The availability of the requested vehicle-specific data means availability within the motor vehicle itself. Furthermore, the evaluation of the data sent by the motor vehicle and received by the communication device means, for example, a content check, which may take place in addition to a check of data integrity, authentication, or encryption. The content evaluation or verification may, for example, be performed by the communication device itself. The response data sent to the motor vehicle by the communication device is sent to the motor vehicle, in particular, in encrypted form.

[0019] The vehicle user's signaling system may, for example, provide route guidance for a selected driving route or a warning. The vehicle user may, in particular, be a driver or operator. The user signaling system preferably operates via the vehicle itself, for example, using a human-machine interface located within the vehicle. For example, the human-machine interface may provide haptic and / or optical feedback. The human-machine interface may, for example, consist solely of a screen and / or a speaker. The human-machine interface may, for example, be part of the vehicle's tachograph.However, it is also conceivable, for example, that the human-machine interface could be part of a central monitor (also called a central display) in the motor vehicle or part of a combined display instrument in the motor vehicle. Signaling to the motor vehicle user could, for example, also consist of automatically limiting and possibly reducing the vehicle's speed in avoidance traffic, in particular. When the motor vehicle is an explosion-proof vehicle or an ADR vehicle (European Agreement concerning the International Carriage of Dangerous Goods by Road). It is therefore also possible to determine whether the oncoming motor vehicle is also an explosion-proof vehicle or an ADR vehicle.

[0020] The motor vehicle can in principle be any road vehicle, for example, a passenger car or a motorcycle. Preferably, the motor vehicle is a commercial vehicle, in particular a heavy goods vehicle, which can, for example, also be a tractor or a semi-trailer. In particular, the motor vehicle can be an explosion-proof vehicle or an ADR vehicle. An explosion-proof vehicle is an explosion-resistant vehicle, which must usually comply with special legal provisions, in particular concerning protection against explosions. An explosion-proof vehicle can, for example, be a standard production motor vehicle that is supplemented with special explosion-proof measures.An explosion-proof vehicle may be designed, for example, for the transport of dangerous goods, particularly goods that present an explosion risk, and / or for operation in an environment with an explosion risk, such as an underground mine or a chemical production site. For an explosion-proof vehicle, especially one used on public roads for the transport of dangerous goods, it must be considered that, for example, in the event of a traffic accident involving this vehicle or a malfunction of this vehicle, such as a fire or a leak from the transport container / tank, there is a particularly significant risk to other road users and the environment. The explosion-proof vehicle therefore presents a high potential hazard. The same applies to an ADR vehicle.An ADR vehicle is a vehicle used for the transport of dangerous goods on the road. Such an ADR vehicle is equipped in accordance with the "European Agreement concerning the International Carriage of Dangerous Goods by Road" (abbreviation ADR).

[0021] The invention allows different stages of development, for example in a first stage for example a detection of transport of dangerous goods, in a second stage for example a detailed evaluation of a vehicle load and in another stage for example an active control of traffic in a traffic space.

[0022] Advantageous improvements to the invention are indicated below.

[0023] One could, for example, imagine that the communication device itself evaluates the vehicle-specific data sent by the motor vehicle. However, an advantageous improvement of the invention provides that the encrypted vehicle-specific data sent by the motor vehicle and received by the communication device is sent by the communication device to a central computer for evaluation, that the central computer performs the evaluation and sends the result of the evaluation back to the communication device. This means that the data evaluation in this embodiment of the invention is performed by the central computer and, for example, not by the communication device.Thus, this can advantageously allow the central computer, which could be, for example, a traffic management computer, to perform two main functions: firstly, the evaluation of vehicle-specific data, taking into account information from other vehicles; and secondly, the central computer, as a traffic management computer, can use the results of this vehicle-specific data evaluation, particularly in anonymized form, potentially also for information from other vehicles. The central computer could also be a server or a primary computer. Furthermore, the central computer could also be a set of computers or servers.

[0024] According to another advantageous improvement of the invention, the central computer sends the motor vehicle a request for vehicle-specific data; the motor vehicle, if the requested vehicle-specific data is available, sends the requested vehicle-specific data to the central computer in encrypted form; the encrypted vehicle-specific data sent by the motor vehicle is received and evaluated by the central computer; based on a result of the evaluation of the data sent by the motor vehicle, response data is sent by the central computer to the motor vehicle; the response data sent by the central computer is received and evaluated by the motor vehicle; and based on a result of the evaluation of the data sent by the central computer, a signal is sent to a user of the motor vehicle.Thanks to this improvement of the invention, it is possible for the central computer to also send a request directly to the motor vehicle on its own initiative, for example, to determine whether motor vehicles transporting dangerous goods are present in a given traffic area, and to communicate with it without the communication device located outside the motor vehicle needing to be involved in the communication between the motor vehicle and the central computer. The central computer can send the request to the motor vehicle for vehicle-specific data, in particular data determined, for example, after notification from the motor vehicle to the central computer, and preferably from [the relevant source / device]. This process is triggered by this notification and / or at regular intervals cyclically to the motor vehicle. The evaluation of the encrypted vehicle-specific data sent by the motor vehicle via the central computer is, for example, a content check, which may be performed in addition to a data integrity check or authentication check. Based on the result of the evaluation of the vehicle-specific data sent by the motor vehicle, response data is generated by the central computer and sent to the motor vehicle, particularly in encrypted form. The response data sent by the central computer is received and evaluated by the motor vehicle, and depending on the evaluation result, a notification is sent to a user of the motor vehicle, who may be, in particular, a driver.In principle, in the method according to the invention, communication between the motor vehicle and the communication device located outside the motor vehicle is essential, but in addition the central computer may optionally communicate directly with the motor vehicle, as described above according to the improvement.

[0025] According to another advantageous improvement of the invention, the motor vehicle sends encrypted data to the communication device and / or the central computer, corresponding to the vehicle user's signaling. The vehicle user's signaling may, for example, include information indicating that the motor vehicle is transporting dangerous goods and must therefore follow a detour route. The data corresponding to the vehicle user's signaling essentially includes the same information as the signaling itself; in this example, it is the fact that the vehicle is transporting dangerous goods and must follow a detour route.This information can therefore be made available to the communication device and / or the central computer, so that it can, for example, inform other road users accordingly.

[0026] One could imagine, for example, that the communication between the motor vehicle and the communication device is based on an optical process. It is also conceivable, for example, to provide for wired data transmission between the communication device and the central computer. For particularly reliable data transmission, which may also not require any costly infrastructure such as cable connections, it is advantageous, according to another improvement of the invention, for the data to be transmitted between the motor vehicle and the communication device using a short-range radio communication method and / or for the data to be transmitted between The motor vehicle and the central computer may communicate using a mobile telephony method, and / or data may be transmitted between the communication device and the central computer using a mobile telephony method. For data transmission between the motor vehicle and the central computer, as well as for data transmission between the communication device and the central computer, the same mobile telephony method may be used. Preferably, the short-range radio communication method may be a DSRC (Dedicated Short Range Communication) method. The mobile telephony method may preferably be a mobile telephone network data transmission method, in particular GSM (Global System for Mobile Communications).

[0027] The second objective above is achieved according to the invention by means of a system for assisting in the guidance of driving a motor vehicle, the system comprising at least one motor vehicle and at least one communication device, and the motor vehicle comprising a tachograph and a human-machine interface; the communication device being made to send to the motor vehicle a request relating to vehicle-specific data; the motor vehicle being made to, in the event that the requested vehicle-specific data is available, send the requested vehicle-specific data in encrypted form to the communication device by means of the tachograph; the communication device being made to receive the encrypted vehicle-specific data sent by the motor vehicle;The communication device is designed to send response data to the motor vehicle based on the results of evaluating the data sent by the motor vehicle. The motor vehicle is designed to receive and evaluate the response data sent by the communication device using a tachograph, and the motor vehicle is designed to signal a user of the motor vehicle using a human-machine interface based on the results of evaluating the response data sent by the communication device. The system according to the invention is, in particular, a system for implementing a method according to the invention.

[0028] What allows for a particularly advantageous simplification of the system according to the invention and the system structure is the use of the tachograph, since the tachograph is already fundamentally a device that guarantees, for example, data confidentiality and is designed to send and receive data in encrypted form. The evaluation of the response data sent by the communication device to the motor vehicle is preferably carried out via the tachograph. The human-machine interface of the motor vehicle, by means of which the signaling to the motor vehicle user is performed, can by For example, it could be a combined display unit or a central monitor in the motor vehicle. It is also possible for the human-machine interface to be part of the tachograph itself. For instance, a display unit of the tachograph can form the human-machine interface through which signals are provided to the motor vehicle user. The human-machine interface does not necessarily have to be an optical interface such as a monitor or display unit; it could also be, for example, an acoustic or haptic interface.

[0029] One could imagine that the evaluation of the encrypted vehicle-specific data sent by the motor vehicle and received by the communication device is carried out, for example, by means of a computing unit connected to the communication device. However, for a simple system structure, it is advantageous, according to another improvement of the invention, for the communication device to be designed to evaluate the encrypted vehicle-specific data sent by the motor vehicle.

[0030] According to another advantageous improvement, the system includes a central computer, the central computer being designed to evaluate the encrypted vehicle-specific data sent by the motor vehicle. The central computer may, for example, be a traffic management computer. The central computer may optionally use the result of the evaluation of the data sent by the motor vehicle, for example, for a traffic management function for other motor vehicles in a traffic area.

[0031] According to an advantageous improvement of the invention, the central computer is designed to send the motor vehicle a request for vehicle-specific data and to receive encrypted vehicle-specific data sent by the motor vehicle. In this way, the system according to the invention provides a possibility of direct communication between the motor vehicle and the central computer without involving the communication device.

[0032] According to another advantageous improvement of the invention, the tachograph has a short-range radio communication interface. Through this interface, data transmission between the motor vehicle and a communication device located outside the motor vehicle can advantageously take place. In particular, the interface can be a DSRC interface. The interface can, for example, be fully integrated into the tachograph, i.e., the tachograph also has an associated transmitting and receiving antenna in its device housing, in particular a DSRC antenna. It is also conceivable that the tachograph interface has an electronic interface unit integrated into the tachograph and an antenna terminal. In this case, an associated transmitting and receiving antenna, in particular a DSRC antenna, is connected to the terminal. antenna, which antenna is an external antenna in relation to the tachograph, in particular in relation to its device housing.

[0033] According to another advantageous improvement of the invention, the tachograph has a mobile phone communication interface. This interface may, in particular, be a GSM interface. The interface may, for example, be integrated, along with an associated transmit-receive antenna, in particular a GSM antenna, completely within the tachograph, in particular within the tachograph's device housing. However, it is also conceivable that the interface may have an electronic mobile phone communication unit and an antenna terminal within the tachograph, in particular inside the tachograph's device housing, with an associated transmit-receive antenna, in particular a GSM antenna, being connected to the antenna terminal as an external antenna for mobile phone communication.

[0034] According to another advantageous improvement of the invention, the communication device is a fixed transmitting and receiving station. Therefore, the communication device is in this case a fixed communication device. Preferably, the transmitting and receiving station is located in a traffic area, in particular at the edge of the roadway. The transmitting and receiving station may, in particular, be a beacon.

[0035] According to another advantageous improvement of the invention, the communication device is a mobile transmitting and receiving device. Consequently, the communication device is in this case a mobile communication device. The mobile transmitting and receiving device can, for example, be a portable device that is used and operated, for example, by a person responsible for inspection in an inspection office. It is also conceivable that the mobile transmitting and receiving device could be installed, for example, in another motor vehicle. The other motor vehicle can, for example, generally be another vehicle in the traffic lane, or it can, for example, be a vehicle belonging to an inspection office used for inspection purposes.

[0036] Forms of the system according to the invention for assisting in the guidance of driving a motor vehicle also belong to the invention, which system has characteristics such as those already described in relation to forms of the method according to the invention for assisting in the guidance of driving a motor vehicle, and vice versa. This is why the corresponding modalities of the system according to the invention or of the method according to the invention are not described again.

[0037] The invention also includes the combination of the characteristics of the modalities and embodiments described.

[0038] Examples of embodiments of the invention are described in more detail below with the aid of the sketched and schematic representations in the drawings.

[0039] In the drawings:

[0040] [Fig-1] [Fig.1] illustrates a vehicle driving guidance assistance system automobile,

[0041] [Fig.2] [Fig.2] illustrates another system for assisting in the guidance of driving a motor vehicle and

[0042] [Fig.3] [Fig.3] illustrates in a schematic summary of different methods of assisting in the guidance of driving a motor vehicle.

[0043] The corresponding elements are all designated with the same reference numbers in all the figures. The individual figures illustrate and explain, respectively, individual features and examples of embodiments of the invention and therefore do not necessarily show the invention as a whole with all its features each time.

[0044] Figure 1 illustrates a system 1 for assisting the guidance of a motor vehicle 2 traveling on a roadway 4 in a traffic area. The motor vehicle 2 is being driven while transporting dangerous goods, i.e., the motor vehicle 2 is loaded with dangerous goods 6. A fixed communication device 8 is located at the edge of the roadway 4 in this embodiment. The communication device 8 is, for example, a fixed beacon. In principle, however, the communication device 8 could also be a mobile beacon or a portable mobile device, for example.

[0045] The motor vehicle 2 has a tachograph 10 and a human-machine interface not shown here. The tachograph 10 has a short-range radio communication interface, this interface comprising in this embodiment a transmitting and receiving antenna 12 which is located outside the tachograph 10. The transmitting and receiving antenna 12 is connected to the tachograph 10 by means of a power line 14 and is an external antenna of the tachograph 10.

[0046] A second motor vehicle 16 is traveling on roadway 4 in the opposite direction to the first motor vehicle 2. The operation of the second motor vehicle 16 also constitutes the transport of dangerous goods; indeed, the second motor vehicle 16 is also loaded with dangerous goods 18. The second motor vehicle 16 has a tachograph 20 equipped with a short-range radio communication interface. This short-range radio communication interface includes a transmitting and receiving antenna 22 located outside the tachograph 20. This transmitting and receiving antenna 22 is an external antenna of the tachograph 20 and is connected to the tachograph 20 of the second motor vehicle 16 by means of an electrical line 24.

[0047] The communication device 8 is designed both to send to the first motor vehicle 2 a request relating to data specific to the first motor vehicle 2, and to send to the second motor vehicle 16 a request relating to data specific to the second motor vehicle 16. The first motor vehicle 2 is designed so that, if the requested vehicle-specific data is available in the first motor vehicle 2, it sends the requested vehicle-specific data in encrypted form to the communication device 8 by means of the tachograph 10 of the first motor vehicle 2. The second motor vehicle 2 is designed so that, if the requested vehicle-specific data is available in the second motor vehicle 16, it sends the requested vehicle-specific data in encrypted form to the communication device 8 by means of the tachograph 20 of the second motor vehicle 16.

[0048] The communication device 8 is designed to receive encrypted vehicle-specific data sent by the first motor vehicle 2 and to evaluate the received data. Furthermore, the communication device 8 is designed to send response data to the motor vehicle 2, in particular in encrypted form, based on the results of the evaluation of the data sent by the motor vehicle 2. The transmission and reception of data from the communication device 8 to the first motor vehicle 2, or from the first motor vehicle 2 to the communication device 8, is carried out via a short-range, two-way communication link 26 between the communication device 8 and the first motor vehicle 2.

[0049] The first motor vehicle 2 is designed to receive and evaluate the response data sent by the communication device 8 by means of the tachograph 10, in particular using the interface for short-range radio communication of the tachograph 10. Furthermore, the first motor vehicle 2 is designed to, based on a result of the evaluation of the data sent by the communication device 8, signal to a user, in particular a driver, of the first motor vehicle 2 using the human-machine interface of the motor vehicle 2.

[0050] Correspondingly, the communication device 8 is also implemented with respect to the other, second, motor vehicle 16. Conversely, the same is also true for the second motor vehicle 16 with respect to communication with the communication device 8. Data exchange between the communication device 8 and the second motor vehicle 16 is carried out via a bidirectional short-range communication connection 28 between the communication device 8 and the motor vehicle 16. The data exchange and evaluation data is carried out as described in relation to the first motor vehicle 2.

[0051] In principle, it is also conceivable that a direct data exchange may also take place using V2V (Vehicle-to-vehicle) communication between the first motor vehicle 2 and the second motor vehicle 16.

[0052] Figure 2 illustrates another system for assisting in the guidance of a motor vehicle 2. The system 1 according to Figure 2 includes, in addition to the system illustrated in Figure 1, a central computer 30 which may, for example, be a traffic management computer. At the edges of the roadways 4 of a road network 32 are arranged a first communication device 8 and a second communication device 34. On the road network 32 travel a first motor vehicle 2 which is loaded with dangerous goods 6, a second motor vehicle 16 which is loaded with other dangerous goods 18, and a third motor vehicle 36.

[0053] The three motor vehicles 2, 16, 36 each have a tachograph 10, 20, 38, respectively. These tachographs 10, 20, 38 each have a short-range radio communication interface with the communication devices 8, 34. The respective short-range radio communication interfaces of the tachographs 10, 20, 38 each include a transmit and receive antenna 12, 22, 40 for short-range radio communication. The short-range radio communication interfaces of the tachographs 10, 20, 38 may, for example, be DSRC interfaces, and the transmit and receive antennas 12, 22, 40 may be DSRC antennas.

[0054] Transmission and reception of data between motor vehicles 2, 16, 36 and communication devices 8, 34 can be carried out using a short-range radio communication method, for example a DSRC method, via bidirectional short-range communication connections 26, 42. In the embodiment illustrated in [Fig.2], which represents a snapshot of road traffic including the three motor vehicles 2, 16, 36 on the road network 32, a short-range communication connection 26 exists between the first motor vehicle 2 and the first communication device 8 and a short-range communication connection 42 also exists between the third motor vehicle 36 and the second communication device 34.At the instant corresponding to the snapshot, the second motor vehicle 16 is not connected to one of the communication devices 8, 34 using a short-range communication connection. However, a short-range communication connection can be generated between the first communication device 8 and the second motor vehicle 16, for example, during another driving operation of the second vehicle. automobile 16 and its proximity to the first communication device 8. The first communication device 8 can, for example, then send to the second automobile 16 a request relating to data specific to the second automobile 16.

[0055] The tachographs 10, 20, 38 of the motor vehicles 2, 16, 36 also each have an interface for mobile phone communication. The respective interface of the tachographs 10, 20, 38 for mobile phone communication includes a mobile radio antenna 44, 46, 48. Using the respective mobile radio antenna 44, 46, 48, the respective motor vehicle 2, 16, 36 can be connected to a mobile phone network 50 via a mobile phone connection 52, 54, 56. The central computer 30 has a connection 58 to the mobile phone network 50. Consequently, data exchange can take place between the motor vehicles 2, 16, 36 and the central computer 30 directly via the mobile phone network 50.

[0056] In addition, the communication devices 8, 34 are also connected to the mobile telephone network 50 respectively using a mobile telephone connection 60, 62. A direct exchange of data between the communication devices 8, 34 and the central computer 30 can also be carried out via the mobile telephone network 50.

[0057] In the road network 32 there is a prohibited zone 64 for dangerous goods. It is not permitted, i.e. it is prohibited, for the transport of dangerous goods to enter or cross the prohibited zone 64.

[0058] For example, the second motor vehicle 16 which is loaded with the dangerous goods 18 must bypass the prohibited area 64 on a detour 66 which is part of the road network 32. The second motor vehicle 16 is already on this detour 66.

[0059] In addition, the prohibition is signaled to a user, in particular a driver, of the first motor vehicle 2 which approaches the prohibited area 64 in the following way: the first communication device 8 sends, during a passage of the first motor vehicle 2 in front of the first communication device 8, via a two-way short-range communication connection 26, a request relating to data specific to the first motor vehicle 2, here data relating to dangerous goods 6 possibly loaded on the motor vehicle 2 (for example: is the motor vehicle 2 loaded with dangerous goods 6? If dangerous goods 6 are loaded, what type of dangerous goods 6 are they?) to the first motor vehicle 2.The first motor vehicle 2 then sends the requested vehicle-specific data in encrypted form to the communication device 8 via the . short-range communication connection 26. The encrypted vehicle-specific data sent by the motor vehicle 2 is received and evaluated by the communication device 8. In this case, the data is evaluated in order to determine whether the motor vehicle 2 is loaded with dangerous goods 6, so that the motor vehicle 2 cannot cross the prohibited zone 64, but is only entitled to choose the diversion lane 66.

[0060] Based on the result of the data evaluation, response data is sent, in particular in encrypted form, by the communication device 8 to the motor vehicle 2 via the short-range communication connection. The response data sent by the communication device 8 is received and evaluated by the motor vehicle 2. Based on the result of the evaluation of the response data sent by the communication device 8, a signal is issued to the user of the motor vehicle 2. In this example, the response data contains an indication that the motor vehicle 2, due to its loaded dangerous goods 6 and the prohibited area 64 (not authorized for dangerous goods), must use the diversion lane 66. This indication is signaled as a navigational instruction to the user of the motor vehicle 2, for example, visually and / or audibly.The signaling is carried out using a human-machine interface of the motor vehicle 2, for example a central monitor of the motor vehicle 2 and / or a display unit of the tachograph 10 of the motor vehicle 2.

[0061] In principle, it is also conceivable that a direct data exchange may also take place respectively in addition using V2V (Vehicle-to-vehicle) communication between the first motor vehicle 2, the second motor vehicle 16 and the third motor vehicle 36, for example when two of the motor vehicles meet.

[0062] Figure 3 shows, by way of example, various methods I, II, III, and IV for assisting in the guidance of driving a motor vehicle. The respective methods given by way of example include a motor vehicle 100, in particular a tachograph 200 of the motor vehicle 100, and a communication device 300. The communication device 300 is located outside the motor vehicle 100. When the motor vehicle 100 passes in front of the communication device 300, data can be transmitted bidirectionally between the communication device 300 and the motor vehicle 100. The communication device 300 can, for example, be a beacon permanently installed at the edge of the road. Furthermore, a central computer 400 can optionally be integrated into the methods, given by way of example, for assisting in the guidance of driving the motor vehicle 100. A transmission Data transmission between the motor vehicle 100, specifically the tachograph 200 of the motor vehicle 100, and the communication device 300 is carried out using a short-range radio communication method. Data transmission between the communication device 300 and the central computer 400, as well as data transmission between the motor vehicle 100, specifically the tachograph 200 of the motor vehicle 100, and the central computer 400, is carried out using a mobile telephony method. The mobile telephony method may be a GSM method and the short-range radio communication method may be a DSRC method.

[0063] In a method I given by way of example, the communication device 300 sends a request to the motor vehicle 100 for vehicle-specific data, here relating to a load of the motor vehicle 100 (A). The motor vehicle 100 then sends encrypted data, containing information about the dangerous goods being loaded, to the communication device 300 (B). This data is received and evaluated by the communication device 300. Based on the evaluation result, corresponding response data, which in the case described here contains information about the dangerous goods being loaded onto the motor vehicle 100, is stored for querying or verification, for example, by tax authorities or the police, or in the event of an accident involving the motor vehicle 100 (C).

[0064] In another, second, method II given by way of example, in addition to the steps of the first method I, the response data are sent by the communication device 300 to the motor vehicle 100, in particular to the tachograph 200 of the motor vehicle 100, in particular in encrypted form. The response data are in particular received and evaluated by the tachograph 200. Depending on the result of the evaluation of the response data sent by the communication device 300, a signal is sent to a user, in particular a driver, of the motor vehicle 100 (D). This signal may, for example, be navigation information displayed on a central screen in the motor vehicle 100 relating to a detour route to be selected for the subsequent driving of the motor vehicle 100.

[0065] In another, third, method III, the central computer 400 is further integrated, with data being exchanged between the communication device 300 and the central computer 400 via a mobile telephone network. In this case, the vehicle-specific data 100 sent by the vehicle 100, encrypted, and received by the communication device 300, is sent by the communication device 300 to the central computer 400 for evaluation, after which the central computer 400 performs the evaluation and sends the result of the evaluation at the communication device 300 (E). The central computer 400, which can for example be a traffic management computer, can in this case for the evaluation and / or the result of the evaluation for example take into account the traffic density in the traffic environment of the motor vehicle 100 and / or whether for example there is or is not in the traffic environment of the motor vehicle 100 a prohibited zone, possibly temporary, for dangerous goods, which prohibited zone cannot be traversed by the motor vehicle 100.

[0066] According to another, fourth, method IV given by way of example, the central computer 400 sends a request for vehicle-specific data (F) directly to the motor vehicle 100, in particular to the tachograph 200 of the motor vehicle 100. The motor vehicle 100 sends the requested vehicle-specific data in encrypted form to the central computer 400 (G), which receives and evaluates the data sent by the motor vehicle 100. Based on the result of the evaluation, the central computer 400 sends response data to the motor vehicle 100 (H). The response data sent by the central computer 400 is received and evaluated by the motor vehicle 100. Based on the result of the evaluation of the data sent by the central computer 400, a signal is sent to a user, in particular a driver, of the motor vehicle 100.The signage includes, for example, navigation information, which is displayed, for example, on a central screen of the motor vehicle 100.

[0067] Generally, different development stages are possible, for example:

[0068] a) sending critical vehicle data, relevant in terms of safety (In the simplest case, determining whether it is a dangerous goods vehicle, i.e., a vehicle transporting dangerous goods) via an existing DSRC interface (DSRC interface) of the tachograph, which is routinely installed in commercial vehicles over 3.5 t, for example, in the European Union. In the event of accidents, on-site actions can be implemented based on the vehicle data. Even in heavy traffic, these special commercial vehicles can be diverted to designated transit areas (diversion lanes). When further detailed dangerous goods information is available (e.g., quantity of dangerous goods, packaging, age) and / or special vehicle data (e.g., trailer, structure, etc.), the system can be used to determine the vehicle's classification.If other measures, such as rescue and safety procedures, are indicated, further steps may be taken beforehand. To prevent manipulation and misuse (data protection), vehicle data must be sent in encrypted form. The tachograph, which is... A device that is legally certified, among other things in terms of safety, already possesses corresponding safety capabilities.

[0069] b) An addition of an existing DSRC interface to an active system, in which motor vehicles reciprocally send such critical data as mentioned above, relevant in terms of safety, to forms of technical systems of different types in a corresponding manner:

[0070] bl) DSRC as active V2X (Vehicle-to-Everything) communication with other road users and structural traffic elements such as beacons, mobile terminals, or other motor vehicles, in order to inform each other and deduce corresponding measures such as warnings when, for example, two vehicles for dangerous goods (i.e., dangerous goods transports) meet, or detours when a beacon sets up a bypass route or simply indicates relevant notices or warnings. Such decentralized systems are largely autonomous and can transmit information quickly and in the short term.

[0071] b2) An addition of decentralized V2X communication is the connection to a network Cellular (mobile phone network), which can also transmit data centrally, for example from a traffic management computer (central computer), for example only to beacons or also to other selected road users, or conversely, can obtain data from road users and / or traffic infrastructure (such as beacons). Central control can be achieved in the sense of reliable data transmission (reception conditions, data volumes, etc.), preferably with traffic infrastructure, particularly beacons; further communication then takes place in a decentralized manner between, for example, the beacons and vehicles.

[0072] Overall, the invention illustrates how guiding the driving of a motor vehicle, for example in a traffic area or traffic environment, can be facilitated simply and reliably by taking into account one or more specific attributes of the motor vehicle, which are represented in corresponding specific data of the motor vehicle. Preferably, if a tachograph is integrated, a security technology present in the tachograph can be used for this purpose, in order to guarantee protection against tampering and data integrity without considerable additional complex equipment.

Claims

Demands

1. A method for assisting in the guidance of driving a motor vehicle (2), in which data can be transmitted bidirectionally between a communication device (8) located outside the motor vehicle (2) and the motor vehicle (2) during the passage of the motor vehicle (2) in front of the communication device (8), characterized in that: - the communication device (8) sends the motor vehicle (2) a request for vehicle-specific data; - the motor vehicle (2), if the requested vehicle-specific data is available, sends the requested vehicle-specific data in encrypted form to the communication device (8); - the encrypted vehicle-specific data sent by the motor vehicle (2) is received by the communication device (8); - the received data is evaluated;- based on the result of the evaluation of the data sent by the motor vehicle (2), response data is sent by the communication device (8) to the motor vehicle (2); - the response data sent by the communication device (8) is received and evaluated by the motor vehicle (2); - based on the result of the evaluation of the response data sent by the communication device (8), a signal is sent to a user of the motor vehicle (2).

2. A method according to claim 1, characterized in that the encrypted vehicle-specific data sent by the motor vehicle (2) and received by the communication device (8) are sent by the communication device (8) to a central computer (30) for evaluation, in that the central computer (30) performs the evaluation and sends the result of the evaluation to the communication device (8).

3. Method according to claim 1 or 2, characterized in that - the central computer (30) sends to the motor vehicle (2) a request relating to vehicle-specific data; - the motor vehicle (2), if the requested vehicle-specific data is available, sends the requested vehicle-specific data to the central computer (30) in encrypted form; - the encrypted vehicle-specific data sent by the motor vehicle (2) is received and evaluated by the central computer (30); - based on a result of the evaluation of the data sent by the motor vehicle (2), response data is sent by the central computer (30) to the motor vehicle (2); - the response data sent by the central computer (30) is received and evaluated by the motor vehicle (2); - and based on a result of the evaluation of the data sent by the central computer (30), a signal is sent to a user of the motor vehicle (2).

4. A method according to any one of the preceding claims, characterized in that the motor vehicle (2) sends encrypted data corresponding to the signaling to the user of the motor vehicle (2) to the communication device (8) and / or the central computer (30).

5. A method according to any one of the preceding claims, characterized in that the data is transmitted between the motor vehicle (2) and the communication device (8) using a short-range radio communication method and / or the data is transmitted between the motor vehicle (2) and the central computer (30) using a mobile telephony method and / or the data is transmitted between the communication device (8) and the central computer (30) using a mobile telephony method.

6. System (1) for assisting in the guidance of driving a motor vehicle (2), in particular a system for implementing a method according to one of the preceding claims, characterized in that the system (1) comprises at least one motor vehicle (2) and at least one communication device (8), and in that the motor vehicle (2) comprises a tachograph (10) and a human-machine interface, - the communication device (8) being designed to send to the motor vehicle (2) a request relating to vehicle-specific data; - the motor vehicle (2) being designed to, if the requested vehicle-specific data is available, send the requested vehicle-specific data in encrypted form to the communication device (8) by means of the tachograph (10); - the communication device (8) being designed to receive the encrypted vehicle-specific data sent by the motor vehicle (2); - the communication device (8) being designed to, based on the result of an evaluation of the data sent by the motor vehicle (2), send response data to the motor vehicle (2); - the motor vehicle (2) being designed to receive and evaluate the response data sent by the communication device (8) by means of the tachograph (10);- and the motor vehicle (2) being designed to, based on a result of the evaluation of the response data sent by the communication device (8), provide a signal to a user of the motor vehicle (2) by means of the human-machine interface.;

7. System (1) according to claim 6, characterized in that the communication device (8) is made to evaluate the encrypted vehicle-specific data sent by the motor vehicle (2).

8. System (1) according to claim 6 or 7, characterized in that the system (1) has a central computer (30), the central computer (30) being made to evaluate the encrypted vehicle-specific data sent by the motor vehicle (2).

9. System (1) according to claim 8, characterized in that the central computer (30) is made to send to the motor vehicle (2) a request relating to vehicle-specific data and to receive encrypted vehicle-specific data sent by the motor vehicle (2).

10. System (1) according to any one of claims 6 to 9, characterized in that the tachograph (10) has a short-range radio communication interface.

11. System (1) according to any one of claims 6 to 10, characterized in that the tachograph (10) has a mobile telephony communication interface.

12. System (1) according to any one of claims 6 to 11, characterized in that the communication device (8) is a fixed transmitting and receiving station.

13. System (1) according to any one of claims 6 to 11, characterized in that the communication device (8) is a mobile transmitting and receiving device.

Images