DE102008041749A1 - Method for initializing communication of e.g. data between cars, involves transmitting data between vehicles, where transmitted data are related to standard vehicle and are dependent on vehicle parameters and characteristics - Google Patents

Abstract

The method involves transmitting data between vehicles (10, 12), where the transmitted data are related to a standard vehicle and are dependent on vehicle parameters e.g. length of vehicle, vehicle characteristics e.g. carriage layout. The data are detected by sensors (18, 26). The data are received and evaluated by one of the vehicles. A warning signal e.g. sound signal, is outputted by one of the vehicles using a warning device (30) according to evaluation of the received data during a danger situation. The data are transmitted at a braking speed. Independent claims are also included for the following: (1) a transmitting device for transmitting of data (2) a receiving device for receiving of data (3) a computer program with a set of instructions for performing a method for initializing communication between vehicles (4) a computer program product for performing the method for initializing communication between vehicles.

Description

The The invention relates to a method for providing a communication between vehicles, a reception facility and a facility for sending data or information between vehicles as well a computer program and a computer program product.

State of the art

Of the Exchange of information between vehicles, the comparable Driving situations and environmental conditions are exposed to this help to prevent accidents. So, for example a vehicle that was or is exposed to a dangerous situation, more vehicles exposed to this situation in the future are, warn against this. For example, it can be provided that a vehicle other vehicles against limited road conditions, such as black ice, wait.

Becomes For example, in a vehicle found on a roadway a slippery situation prevails, since in this case the braking distance is extended, so this vehicle can be more vehicles communicate the extended braking distance.

So Systems for vehicle-to-vehicle communication are known by various functions are used in the vehicle. For many functions will transfer data from one or multiple vehicle parameters, vehicle characteristics or vehicle characteristics depend.

From the publication WO 2003/001474 A2 A system for communication between vehicles is known, which allows different vehicles to exchange data. In this case, each vehicle has one or more sensors that collect data related to physical objects in the vicinity of the vehicle. A central processing unit displays the sensed sensor data in each vehicle and sends and receives kinematic status data to and from other vehicles via a transmitter.

adversely in known systems and methods that is due to different Vehicle types must be considered, of which vehicle type the received data come, so conclusions on the meaning of the received data for its own To be able to pull the vehicle.

Disclosure of the invention

The The invention relates to a method for providing a communication between vehicles where data is transferred between vehicles and thus exchanged. The transmitted data is included related to a standard vehicle. This means that the transferred Data are normalized.

The Standard vehicle is a vehicle of a type with known vehicle parameters, Vehicle characteristics and vehicle characteristics. In particular, in the vehicle that transmits acquired data, it is known like your own vehicle type in relation to this Standard vehicle behaves. On this basis can be calculated be like the standard vehicle itself in a particular situation would have behaved. Based on this knowledge become determines the data related to the recorded data on the standard vehicle, which represent the normalized data. These normalized data will be output.

receives now another vehicle the normalized data, can this, in turn, the behavior of the receiving vehicle in relation to the standard vehicle, the received normalized data are evaluated. Based on this evaluation can the relevance of the received data for the receiving Vehicle to be determined.

In Embodiment, data are transmitted in the method, that of vehicle parameters, vehicle characteristics and / or vehicle characteristics depend. This data may, for example, information to the vehicle weight, the braking and acceleration capacity, the vehicle dimensions and the current driving situation give.

It Data can be transmitted by, for example. on-board sensors are detected and then normalized become. In one possible application, data becomes one Braking distance of the vehicle transmitted.

One possible scenario envisages that data at a first Vehicle recorded and the data collected on the standard vehicle based, d. H. normalized, become. The normed in this way Data is then transmitted to at least one second vehicle, in which the transmitted data is received and evaluated become.

at the second vehicle can thus be assessed whether a dangerous situation exists. If this is the case, then the second vehicle is issued a warning signal. This dangerous situation can also be given only for a certain vehicle type.

It Furthermore, a transmitting device is presented which is a first Arithmetic unit is assigned to the detected data on a standard vehicle refers. This normalized data is then sent by the transmitting device or transferred. The transmitting device is usually housed in the sending vehicle and stands with sensors, assigned to the vehicle and regularly in This is in connection.

The Receiving device is used to receive data and is one second arithmetic unit for evaluating received data assigned. In this second arithmetic unit thus the received normalized Data evaluated.

The Receiving device has in design a warning signal generator on, with which a warning signal can be issued.

Of course may be provided a combined transmitting and receiving device be standardized with the captured data and transmitted as well as normalized data can be received and evaluated. In this case, a computing unit may be the one described above realize first and second arithmetic unit.

The Invention further relates to a computer program with program code means, to perform all steps of a described method, if the computer program is on a computer or equivalent Arithmetic unit, in particular in a presented transmission and / or Receiving device is executed.

The Computer program product according to the invention with program code means, stored on a computer-readable medium is to describe all steps of a described Process trained when the computer program on a computer or a corresponding arithmetic unit, in particular in a described Transmitting and / or receiving device is executed.

The Invention provides over known methods and devices, at least in one of the illustrated embodiments, considerable Advantages. Of importance here is that vehicle-dependent Data related to a standard vehicle. That way is one standardized transmission vehicle-dependent Data easily possible, so the bandwidth of the transmission can be restricted. A transfer of additional Vehicle parameter is no longer necessary. this makes possible also a simple handling of the objective function.

This is achieved by providing data related to vehicle parameters, vehicle characteristics and / or Depend on vehicle characteristics and over a vehicle-vehicle communication are transmitted should be related to a standard vehicle.

Becomes for example, transmit a required braking distance, to possibly warn other road users of black ice, so can In addition to the output speed only the normalized braking distance are transmitted.

In order to transmit equivalent or equivalent information, otherwise the braking distance at 100 km / h and also the vehicle type as a reference would be necessary. Likewise, other data, such. B. drivable inclines, maximum possible cornering speeds, etc., are calculated using appropriate formulas with suitable standard vehicle parameters. The vehicle parameters, such as. Length, width, height, track, center of gravity height, vehicle characteristics, z. B. the chassis design, and driving tool characteristics, z. B. braking distance at 100 km / h, the standard vehicle are to be defined in a suitable manner and to make known the functions in the vehicle.

Further Advantages and embodiment of the invention will become apparent from the description and the enclosed drawing.

It it is understood that the above and the following yet to be explained features not only in each case specified combination, but also in other combinations or can be used in isolation, without the scope of the present To leave invention.

Brief description of the drawings

The The invention is based on embodiments in the drawings schematically and will be described below with reference to the drawings described in detail.

1 shows a schematic representation of two vehicles that exchange data with each other.

2 shows in a flow chart a possible sequence of the presented method.

Embodiments of the invention

In 1 are a highly simplified schematic representation of a first vehicle 10 and a second vehicle 12 shown in different positions. It can be seen that the two vehicles 10 and 12 different types are.

In the first vehicle 10 is a transmitting and receiving device 14 provided, that of a computing unit 16 and a sensor 18 assigned. Of course, a plurality of sensors for receiving different data, which regularly depend on vehicle parameters, vehicle characteristics and / or vehicle characteristics, may be provided.

The second vehicle 12 has a transmitting device 20 and a separate receiving device 22 , In the transmitter 20 is a first arithmetic unit 24 and a sensor 26 intended. The receiving device 22 has a second processing unit 28 and a warning buzzer 30 ,

In the first vehicle 10 be by means of the sensor 18 Data is collected using the arithmetic unit 16 be normalized. These normalized data are sent out, for example with an electromagnetic signal, and from the second vehicle 12 with the receiving device 22 receive. These received and normalized data are using the second processing unit 28 evaluated. It is determined that the second vehicle 12 approaching a dangerous situation, so is above the warning buzzer 30 a warning signal is issued. This can be z. B. be a sound and / or light signal. Of course, the driver can also be given more detailed information about the location and the closer circumstances of the dangerous situation.

The normalized data allow the second vehicle 12 a detailed analysis of the data, without requiring more detailed knowledge of the first vehicle 10 to have. This considerably simplifies the computational effort and supports the quick detection of dangerous situations ahead.

In 2 is shown a possible sequence of the described method, the example. Of two vehicles, as in 1 are shown, can be performed.

In a first step 40 In this case, data that is usually dependent on one or more vehicle parameters, vehicle characteristics and / or vehicle parameters are recorded by a vehicle in a specific traffic situation. In this case, this is a braking distance which depends on the weight and braking capacity of the vehicle and also on its speed.

In a second step 42 a normalized braking distance is determined. Since it is known how the vehicle behaves in relation to one or the standard vehicle, thus the braking distance is determined, which would require the standard vehicle in this situation. It can also be determined which braking distance the standard vehicle would need at a certain speed in this situation.

In a third step 44 this standardized value is sent. This can be done on a regular basis, only in certain situations or on request by another vehicle.

In a fourth step 46 the normalized value or the data representing this value is received by another vehicle and in a fifth step 48 evaluated. In this case, the behavior of the receiving vehicle relative to the standard vehicle, whose properties and sizes are known, is taken into account.

On this basis, it is determined whether a dangerous situation is imminent for this vehicle and in this case, in a sixth step 50 a warning signal is issued. If there is no dangerous situation, no warning signal is output and it may be possible in a seventh step 52 the received data are in turn passed on.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• WO 2003/001474 A2 [0005]

Claims (11)

Method for providing communication between vehicles ( 10 . 12 ), in which between the vehicles ( 10 . 12 ) Data is transmitted, the transmitted data being related to a standard vehicle. The method of claim 1, wherein the transmitted Data of vehicle parameters, vehicle characteristics or vehicle characteristics depend. Method according to Claim 1 or 2, in which sensors ( 18 . 26 ) normalized data and transmitted. Method according to one of claims 1 to 3, in which data is transmitted to a braking distance. Method according to one of Claims 1 to 4, in which a first vehicle ( 10 ) Acquires data and relates the acquired data to the standard vehicle and the data normalized in this way to at least one second vehicle ( 12 ) transmits and the at least second vehicle receives the standardized data and evaluates. The method of claim 5, wherein in at least one of the at least one second vehicle ( 12 ) is issued after evaluating the received data in the event of a dangerous situation, a warning signal. Transmitting device for sending data to a first processing unit ( 16 . 24 ), which acquires acquired data on a standard vehicle, and transmits the normalized data. Receiving device for receiving data that a second processing unit ( 16 . 28 ) is assigned to evaluate received data. Receiving device according to Claim 8, which has a warning signal generator ( 30 ) for issuing a warning signal. Computer program with program code means for carrying out all the steps of a method according to one of Claims 1 to 6, when the computer program is run on a computer or a corresponding computer unit ( 16 . 24 . 28 ), in particular in a body ( 14 . 20 . 22 ) according to one of claims 7 to 9, is executed. A computer program product comprising program code means stored on a computer-readable medium for carrying out all the steps of a method according to one of claims 1 to 6, when the computer program is stored on a computer or a corresponding computer unit ( 16 . 24 . 28 ), in particular in a body ( 14 . 20 . 22 ) according to one of claims 7 to 9, is executed.