DE102008042013A1 - Method for documentation of traffic situation in car-to-car communication system, involves using internal sensor data of vehicles and external sensor data that are provided by sensor as data for documentation of traffic situation - Google Patents

Abstract

The method involves using internal sensor data of vehicles (4, 6) and external sensor data that are provided by a sensor (10) as data for documentation of a traffic situation (2) in which the vehicle is involved. The data for an accident recorder of the vehicle are used for documentation of a traffic situation formed as an accident. The sensor data are exchanged between the vehicle and the device. The data are stored during a time interval that starts before starting of the traffic situation and ends after ending of the traffic situation. Independent claims are also included for the following: (1) a device for documentation of a traffic situation (2) a computer program with program code instructions for performing a method for documentation of a traffic situation (3) a computer program product with program code instructions for performing a method for documentation of a traffic situation.

Description

The Invention relates to a method for documenting a traffic situation, a device for documenting a traffic situation Computer program and a computer program product.

State of the art

Known are systems designed as accident data recorders (UDS), the important data of your own vehicle or so-called ego vehicle, z. As speed, steering angle, braking interventions by a appropriate sensors of the vehicle are measured, write down, where this data is stored for a short time and again be discarded. For a manual or automatic release an event, eg. As an accident is so happening directly available before and after the event, which is usually contributes to the clarification of the causes and in the context judicial usability a high benefit for the driver having.

From the publication DE 100 46 696 A1 A method is known for recording data from parameter values detected or determined in a vehicle. In this case, the parameter values and / or data calculated from these parameter values are recorded with increasing time interval with respect to the momentary detection or determination time with decreasing density.

A method for detecting driving data of a vehicle is in the document DE 102 40 838 A1 presented. In this case, a three-dimensional kinematic vehicle model is calculated, including vehicle longitudinal dynamics signals and vehicle transverse dynamics signals, which can be used to reconstruct the vehicle movement.

Disclosure of the invention

The Invention relates to a method for documenting a traffic situation, in which a vehicle is involved, in which as data internal sensor data of the vehicle as well as external sensor data, usually the vehicle provided by at least one other device will be used.

In Design will be the data for an accident data recorder the vehicle to make a log for documentation used as an accident trained traffic situation.

In A variant of the method may include external sensor data of at least a first further device, typically directly at the traffic situation, for example at the accident of the vehicle, is involved.

alternative or in addition, data from at least one second additional facility during the traffic situation located near or around the vehicle and participate in the traffic situation uninvolved or only indirectly is to be used. In this second further device acts It is usually an observing device that is in the frame of the procedure the function of a witness of the traffic situation, For example, the accident takes over.

It is typically provided that the sensor data between the Vehicle and the at least one other first and / or second Facility to be exchanged. At least one more Facility may be a vehicle or an infrastructure facility act. The at least one further device has sensors for Capture the traffic situation.

With The invention is applicable to the vehicle, which also serves as an ego vehicle is a protocol to the traffic situation to be documented, eg. provided for an accident, this protocol at least the internal sensor data of the vehicle (ego vehicle) as well as the external sensor data of the at least one device. sensor data for this protocol are usually in one collected and stored in the vehicle arranged device. However, it is also conceivable that such a protocol in the at least one device, eg an infrastructure device, which observes the traffic situation is provided. Also In this case, internal and external sensor data of the vehicle to Preparation of the protocol used.

The Data, d. H. the internal as well as external sensor data, can during a time interval of length s in one Memory device of the vehicle are stored, the Time interval before an onset of traffic begins and after an end of the traffic situation ends. In design will be the internal and external sensor data synchronized. One for the sensor data to be made synchronization can be based on a Reference clock, for example, arranged in a device of the vehicle is done. The external and internal sensor data can thus be timed.

With The invention can u. a. an overall tachograph be realized, with data between vehicles and / or infrastructure facilities exchanged and used for logging.

The The invention also relates to a device for documentation a traffic situation in which a vehicle is involved. The Device is designed as data for documentation internal sensor data of the vehicle as well as external sensor data, which is usually the vehicle provided by at least one other device be used.

These Device may be arranged in the vehicle and at least a communication module for receiving the external sensor data and a memory device for storing the data and / or interact with such a communication module. With the Device will typically be the already mentioned protocol created for the traffic situation to be documented.

In Embodiment is the device as a cooperative or common Tachograph, eg accident data recorder and / or event observer trained.

These Device is adapted to at least one sensor of the Collaborate vehicle, so that the device of the at least a sensor internal sensor data are provided by the device used to document the traffic situation become. The device may also be adapted to these internal ones To manage sensor data and provide another device. Thus, internal sensor data of a first vehicle after transmission to a second vehicle as supplementary external sensor data used to document the traffic situation become.

The Invention therefore relates to a cooperative accident data recorder, the next to the data, d. H. the internal sensor data of the ego vehicle, too the data, d. H. the external sensor data, the surrounding and the Accident involved and / or uninvolved vehicles or infrastructure facilities and thus logged.

In In one variant of the invention, data are collected from uninvolved facilities, z. B. vehicles or infrastructures that the accident or recording the event.

The described device is designed to all Perform steps of the presented method. there Individual steps of this procedure can also be done by individuals Components of the device are performed. Farther can functions of the device or functions of individual Components of the device implemented as steps of the method become.

The Invention further relates to a computer program with program code means, to perform all the steps of a described method, if the computer program on a computer or equivalent Arithmetic unit, in particular in an inventive Device is executed.

The Computer program product according to the invention with program code means, which are stored on a computer-readable medium, is to perform all steps of a described Process trained when the computer program on a computer or a corresponding computing unit, in particular in an inventive Device is executed.

With The invention is a logging or writing the for a reconstruction of the traffic situation or an event necessary data not only of the ego vehicle trained Vehicle but all other potentially active or passive involved Facilities, usually vehicles and infrastructure, possible. Furthermore, a copy of the sensor data of non-participating vehicles in independent form possible.

Consequently can be a goodness of the reconstruction of traffic situations or traffic events, especially for accident reconstruction, increased become. A simplification of the reconstruction of traffic events or situations is therefore feasible.

The The data collected and stored in the process may be used, for example. a. a support of the driver or holder of the vehicle in representing his claims in disputes. The invention can be used for all means of transport, z. As aircraft, ships, etc., to be implemented. Furthermore, can a support of the prosecution in the Determining the question of guilt by means of neutral records, for example video recordings, an uninvolved observer, d. H. another vehicle and / or one Infrastructural facility, be enabled.

in the The scope of the invention u. a. Vehicle-to-vehicle (car-to-car, C2C) communication systems that use a variety of functions allow in which the vehicles z. For example, their position, Transmit speed and other parameters as sensor data.

In one variant of the invention, individual or all data and thus sensor data, which a conventional accident data recorder co-writes for the ego vehicle, are sent, received and stored for other vehicles via the C2C communication. The device can be referred to as a cooperative accident data recorder. In order to lie with a manual or automatic release, z. As an accident, the helpful for a reconstruction data for all involved vehicles.

With The invention may include individual or all data, which is a conventional accident data recorder for the participating vehicles also write to an uninvolved Vehicle or an infrastructure facility via a radio link be sent. In addition, the uninvolved vehicle or the infrastructure device's own data and thus sensor data to record with. This is above all for the synchronization of the data provided, z. For example, the transmitted speed the vehicles involved in the accident with the via the position tracking the speed determined by idle vehicles is identical be. An independent observation can z. B. over a video image done. This system is called a cooperative event observer designated.

The Tripping to record sensor data can be done by the vehicles involved manually and / or automatically. Also, the triggering of the independent Observers take place.

in the Under the procedure, all facilities and therefore Vehicles permanently exchange part or all typical UDS data. In the ego vehicle, this data is for the last s seconds saved. The value for s is down by empirical values from the accident reconstruction and up through the storage resources limited to the cooperative UDS. A duration of the time interval s can be set so that the traffic situation, typically the accident can be reconstructed to a sufficient extent. Exactly as in conventional UDS, after s seconds, the data becomes the first second replaced by the s plus first second, what happens after the first-in-first-out (FIFO) principle. After one Event will continue for some time, which is less than s and then the recording stops. Thus, the event is immediate available before and after the event. A safe and comfortable method of reading out the data in an accident or another event may also be provided to implement the invention be.

Also This can be done with video data, for example. For a video sensor or a camera at an infrastructure facility, such Video data are provided as sensor data.

conventional UDS log or log only the data of the ego vehicle. For most applications, however, at least involved a second vehicle. Often that has over no UDS or its data are not accessible or will not be published. With the invention now also data, usually sensor data, this at least a second Vehicle be used.

Further Advantages and embodiments of the invention will become apparent from the Description and attached 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

1 shows a schematic representation of a first traffic situation.

2 shows a schematic representation of a second traffic situation.

3 shows a schematic representation of a third traffic situation.

Embodiments of the invention

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

The Figures become coherent and comprehensive described, like reference numerals designate like components.

1 shows in a schematic representation as the first traffic situation 2 an accident involving a first vehicle 4 and a second vehicle 6 involved. Also shows 1 a third vehicle 8th , here a sensor designed as a camera 10 includes. It is intended that the third vehicle 8th is not involved in the accident, but of the accident, ie a collision of the first vehicle 4 with the second vehicle 6 , with the camera has provided a recording.

As part of an embodiment of the method is provided that, starting from the third vehicle 8th the at least one recording as sensor data to the first and the second vehicle 4 . 6 is transmitted. If there are several recordings and thus sensor data, these can be from embodiments of devices according to the invention, not shown here, in the first two vehicles 4 . 6 are arranged to be received as external sensor data. These external Sensor data are used in the design of the method with internal sensor data from the first two vehicles 4 . 6 for the documentation of the accident and thus the traffic situation 2 were generated for the extended documentation of the traffic situation 2 used. Thus, the devices in the first two vehicles 4 . 6 using all internal and external sensor data protocols on the traffic situation 2 and continue to use them for the realization of a cooperative accident data recorder (UDS).

2 shows in a schematic representation as a second traffic situation 12 also an accident involving the first vehicle 4 with the second vehicle 6 collided. In this case it is envisaged that a permanently installed infrastructure 14 acting as a sensor 16 has a camera, has taken at least one shot. Similar to the first traffic situation 2 out 1 Represents the infrastructure facility 14 the shot of the camera the first two vehicles 4 . 6 as at least one sensor date ready. In the presence of several sensor data formed as recordings, these are used to implement an embodiment of the method according to the invention of the two vehicles 4 . 6 used as external sensor data, in order to support a cooperative accident data recorder (UDS) in addition to internal sensor data of the two vehicles 4 . 6 for documentation and thus logging of the traffic situation 12 to be used. The documentation of the traffic situation 12 takes place here by not shown embodiments of inventive devices, in the two vehicles 4 . 6 are arranged.

3 shows a third traffic situation 18 with a first vehicle 20 and a second vehicle 22 in a schematic representation. The first vehicle 20 shows a first embodiment of a device 24 for the documentation of the traffic situation 18 , a first and a second sensor 26 . 28 for capturing internal sensor data and as a radio antenna 30 trained communication module. The second vehicle 22 shows a second embodiment of a device according to the invention 32 for the documentation of the traffic situation 18 , a first sensor 34 , a second sensor 36 both for providing internal sensor data of the second vehicle 22 are formed, and one as an antenna 38 trained communication module.

To implement a further variant of the method according to the invention, it is provided that of the sensors 26 . 28 . 34 . 36 of the two vehicles 20 . 22 constantly recorded internal sensor data and in the respective devices 24 . 32 stored during a time interval of length s. This with the two devices 24 . 32 collected internal sensor data are here for logging and thus documentation of the traffic situation 18 used and continue to realize a respective tachograph for the two vehicles 20 . 22 used.

If it is in a further development of the traffic situation shown here 18 to an accident between the two vehicles 20 . 22 should come, is provided that the two vehicles 20 . 22 via the communication modules 30 . 38 exchange their acquired internal sensor data alternately. In the present embodiment of the method, this means that internal sensor data of the first vehicle 20 to the second vehicle 22 be transmitted and from the second vehicle 22 as now external sensor data are used in addition to their own internal sensor data to document the traffic situation. Accordingly, it is provided that the internal sensor data of the second vehicle 22 by wireless transmission to the first vehicle 20 be transmitted, so that the device 24 of the first vehicle 20 this internal sensor data of the second vehicle 22 in addition to the own recorded internal sensor data used as external sensor data for documentation of the traffic situation.

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

• - DE 10046696 A1 [0003]
• DE 10240838 A1 [0004]

Claims (12)

Method for documenting a traffic situation ( 2 . 12 . 18 ) on which a vehicle ( 4 . 6 . 20 . 22 ), in which as internal data sensor data of the vehicle ( 4 . 6 . 20 . 22 ) and external sensor data provided by at least one other device. Method according to Claim 1, in which the data for an accident data recorder of the vehicle ( 4 . 6 . 20 . 22 ) for the documentation of a traffic situation designed as an accident ( 2 . 12 . 18 ), be used. Method according to Claim 1 or 2, in which the external sensor data from at least one further device which is connected to the traffic situation of the vehicle ( 4 . 6 . 20 . 22 ) is directly involved. Method according to one of the preceding claims, in which data from at least one further device which is arranged in an environment of the vehicle during the traffic situation and in the traffic situation ( 2 . 12 . 18 ) is uninvolved. Method according to one of the preceding claims, in which the sensor data between the vehicle ( 4 . 6 . 20 . 22 ) and the at least one other device to be replaced. Method according to one of the preceding claims, in which the data are stored during a time interval of length s, wherein the time interval before a start of the traffic situation ( 2 . 12 . 18 ) begins and ends after an end of the traffic situation. Device for documenting a traffic situation ( 2 . 12 . 18 ) on which a vehicle ( 4 . 6 . 20 . 22 ), which is designed for the documentation as data internal sensor data of the vehicle ( 4 . 6 . 20 . 22 ) and external sensor data provided by at least one other device. Device according to claim 7, which can be arranged in the vehicle ( 4 . 6 . 20 . 22 ) is trained. Apparatus according to claim 7 or 8, which is designed to be connected to at least one communication module ( 30 . 38 ) for receiving the external sensor data. Device according to one of claims 7 to 9, who is trained as an accident data recorder. Computer program with program code means to all Steps of a method according to one of claims 1 to 6 perform when the computer program on a computer or a corresponding computing unit, in particular in a device according to one of claims 7 to 10, executed becomes. Computer program product with program code means, stored on a computer-readable medium are to complete all steps of a procedure according to one of the claims 1 to 6 when the computer program on a computer or a corresponding computing unit, in particular in a device according to one of claims 7 to 10, executed becomes.