WO2019076695A1

WO2019076695A1 - Method for evaluating traffic data, computer program, machine-readable storage medium and apparatus

Info

Publication number: WO2019076695A1
Application number: PCT/EP2018/077571
Authority: WO
Inventors: Reinel Castaneda-Ortiz; Marlon Ramon EWERT
Original assignee: Robert Bosch Gmbh
Priority date: 2017-10-18
Filing date: 2018-10-10
Publication date: 2019-04-25
Also published as: DE102017218561A1

Abstract

Method (100) for evaluating traffic data: acquiring (101) traffic data by means of a central device and/or a cloud, in particular via a car-to-X communication means; buffering (102) the acquired traffic data in the central device and/or the cloud; acquiring (103) an accident signal by means of the central device and/or the cloud, in particular via a car-to-X communication means; in reaction to the accident signal, evaluating and persisting (104) with the acquired traffic data in the central device and/or the cloud.

Description

description

title

Method for evaluating traffic data, computer program,

machine-readable storage medium and device

The present invention relates to a method for evaluating traffic data, to a corresponding computer program and to a machine-readable storage medium and to a corresponding device.

State of the art

It is state of the art that different data of a vehicle include, for example, speed and direction during an accident within a vehicle

Vehicle control unit are stored. These data are later required to the extent required by law or allowed for accurate accident reconstruction. From the evaluation of the data, for example, it is determined whether someone was traveling at an excessive speed and so it came to an accident or who is responsible for the occurrence of the accident.

Furthermore, so-called Dashcams, a password word from English from "dash board" for dashboard and "camera" for camera, known, mostly on the

Dashboard or attached to the windshield of a vehicle and during the journey continuously or as needed or request video recordings.

Alternatively, cameras can be used to realize a lane keeping or

Emergency braking function can be used to be addressed. Also possible is the use of Dashcam apps, which fall back on the camera of a smartphone, which is mounted on the dashboard or on the windshield.

Regardless of the camera technology used, video recordings of the environment of the vehicle or at least of the scenario in front of the vehicle can be made, if necessary or permanently.

Currently, the data for the vehicle are evaluated individually. This has the significant disadvantage that the holistic accident image currently, if at all, has to be laboriously assembled from the individual data of the vehicles.

Disclosure of the invention

Against this background, a method for evaluating

Traffic data presented. The method comprises the steps:

Capture traffic data through a central facility and / or a cloud.

Caching the collected traffic data in the central facility and / or the cloud.

Detecting an accident signal by the central facility and / or the cloud.

In response to the accident signal evaluating and persisting the detected

Traffic data in the central facility and / or the cloud. Traffic data is understood to be the data that arises during the operation of a vehicle in traffic.

These include speed data, position data,

Driving direction data, vehicle trajectories, detection of vehicle occupants (number, adult, child), traffic signals, objects, objects, animals, pedestrians, affected vehicles, weather conditions, distances to objects.

Vehicle trajectories are present especially in at least partially automated vehicles, precisely because the further vehicle movement takes place via corresponding trajectory evaluations or trajectory determination.

In the present case, a central device is understood to mean a device which records, evaluates and persists traffic data for a plurality of vehicles. It is not central to understand that there is only such a facility worldwide. The centrality can be seen locally, regionally or organisationally. It can also be a hierarchically structured central facility. It is important that in the central facility traffic data multiple vehicles are detected in such a way that when an accident event, a holistic accident picture can be created.

Under a Cloud are present computing resources, including memory and

Evaluation devices understood to be made available over a network without the computing resources must be present locally in the vehicle. As a network, over which the computing resources are made available, offers itself

advantageously the internet.

By capturing, caching, evaluating and persisting the

Traffic data in the central facility or in the cloud, the collected traffic data are available centrally faster. Would be compared to the

Traffic data in the vehicle itself cached, evaluated or be persisted, so the traffic data for evaluation and the

Persistieren first be read out of the vehicle. Here would be the question of the way. This can advantageously be done by capturing, buffering, evaluating and persisting in a central location

Facility or in the cloud handle.

It is advantageous if the steps of detecting via a Car-to-X communication medium done.

Under Car-to-X communication means are present communication means for use for communication of a vehicle with other vehicles or with its environment to understand. For this purpose, wireless communication means such as radio, WLAN, GSM, LTE and the like are available, in particular in their designs for the automotive sector.

In the present case, an accident signal is a signal that represents the occurrence of an accident.

In the present case, the term "persistence" is understood to mean a storage of the data in a manner intended to ensure that the data is permanently readable, at least for authorized persons. Beneficiaries may be owners of the data or state or private entities such as law enforcement agencies, vehicle leasing companies, prosecutors or insurance companies.

Alternatively or additionally, the data could be made available to the authorized persons in real time. The provision could have a corresponding

Communication network such as the Internet done. It is advantageous if the data is stored and provided according to a standard.

If the beneficiaries are, for example, public authorities, the data could be used to increase traffic safety by providing appropriate information

Measures taken to regulate road traffic

Avoid repetition of a similar accident event at the site.

For this purpose it is also conceivable to use the data-learning evaluation methods. The use of learning evaluation methods has the advantage that the data can be evaluated more accurately, faster. This makes data more efficient, secure and broader available.

According to an embodiment of the method of the present invention, the traffic data comprises information about the location, the weather condition, state of the

Vehicle occupants immediately prior to the collision and the time of recording the traffic data and the accident signal information about the location, weather conditions, condition of the occupants and the time of the accident event on. Thus, in the step of evaluating and persisting, only the traffic data recorded within a predetermined range around the location of the accident event and recorded within a predetermined time period before, during and after the accident event is evaluated and persisted.

In particular, on the condition of the vehicle occupants can be easily reconstructed whether the driver was distracted, for example, because he has phoned just before the collision with the mobile phone.

According to an embodiment of the method of the present invention, in the step of caching, the oldest data is overwritten by new data when the storage capacity of the buffer is used up. This embodiment has the advantage that only an upwardly limited storage capacity must be provided for the amount of transmitted traffic data. Furthermore, this embodiment achieves, in a simple and simple way, the task of maintaining traffic data only for a predetermined time, when no event, such as, for example, an accident occurs, which necessitates persisting the traffic data.

According to one embodiment of the method of the present invention, the method comprises the additional step of overmolding, wherein in the step of

Übermitteins the Evaluated traffic data to another body, in particular an authority, in particular the police, the rescue service, the fire brigade udgl., Are transmitted.

This embodiment has the advantage that the evaluated traffic data of the corresponding authority exist. So it is possible that rescue workers can get a holistic picture of the accident before arriving at the scene of the accident. As a result, the authority can, for example, better coordinate a necessary mission and initiate targeted rescue and rescue measures.

In the aftermath, it is also possible to clarify a possible question of guilt easier, since the present, recorded and evaluated traffic data enables a holistic view of the accident.

According to one embodiment of the method of the present invention, in the step of buffering or in the step of the evaluation, the traffic data for optimizing the detection systems with which the traffic data is detected are processed.

In the present case, a detection system can be understood to mean a sensor system or a sensor system. Sensor systems are, for example, acceleration, pressure, temperature or speed sensors. Sensor systems are, for example, systems for high-precision position determination, LiDAR (Light Detection and Ranging) systems, as well as road condition determination. Or sensors for detecting vehicle occupants or for assisting functions for the driver.

By processing the cached traffic data, the sensors or sensor systems can be improved. Improving in the present context means that the accuracy of the position determination, the speed, the direction or the determined distance to eg other persons, vehicles or things etc. is increased. In this case, it is a good thing that the recorded data of several sensor systems can be matched with one another, so that the redundant data makes it possible to increase the accuracy. For example. by insights that result from the processing in Betriebsbzw. Include evaluation of the sensors or sensor systems.

Another aspect of the present invention is a computer program configured to perform all steps of one of the embodiments of the methods of the present invention.

Another aspect of the present invention is a machine-readable one

A storage medium storing the computer program according to one of the aspects of the present invention.

Another aspect of the present invention is an apparatus configured to perform all steps of one of the embodiments of the methods of the present invention.

Hereinafter, embodiments of the present invention will be illustrated and explained with reference to figures. Show it:

1 is a flowchart of a method according to an embodiment of the present invention;

Fig. 2 is a schematic representation of a system for using a

Embodiment of the method of the present invention. FIG. 1 shows a flow chart of a method according to an embodiment of the present invention.

In step 101, traffic data from multiple vehicles is collected by a central facility or a cloud via car-to-X communication means. For example, vehicles continuously send their current traffic data to the central facility or the cloud. It would also be conceivable for the vehicles to collect their traffic data and send it to the central facility or the cloud at a favorable time. A favorable time can be a point in time where there is a good communication link. For example. with good reception of a wireless communication means such as a communication device based on radio, WLAN, GSM, LTE or the like.

In step 102, the central facility or the cloud stores the detected

Traffic data between. Such intermediate storage can take place by means of a ring memory or a FI FO (first-in-first-out) list. One aspect of caching is that the captured data is deleted after a certain time or event. The caching should therefore not be permanent.

In step 103, an accident signal is received. An accident signal indicates the occurrence of an accident. It would also be conceivable that the accident signal indicates the inevitable occurrence of an accident in the future. An accident signal can be detected on the one hand as a concrete accident signal, for example. By the emitting vehicle has detected the occurrence of an accident. The vehicle does not have to be directly involved in the accident itself. It is also conceivable that the vehicle has detected an accident between other vehicles by means of its sensor signals and then drops the accident signal. On the other hand, the occurrence of an accident can be derived from the traffic data itself. For example, if the collected traffic data includes information that makes it possible to deduce the occurrence of an accident. This information could be eg. Acceleration signals of the or the sending vehicles be. The second variant would require that when detecting or caching an additional step of analyzing the traffic data would take place.

In step 104, in response to detecting an accident signal, the traffic data is evaluated and persisted. When analyzing the traffic data traffic data of different vehicles are related to each other, so that from the evaluated traffic data a holistic picture of the

Accident event can be created. This is possible if the traffic data and the accident signal include location, weather and time information as well as information about the condition of the vehicle occupants, so that when evaluating and relating, only the traffic data are used, which from a predetermined area around the accident location and were recorded from a predetermined period at the time of the accident.

FIG. 2 shows a schematic representation of a system for implementing an embodiment of the method of the present invention.

Central is a vehicle shown. The vehicle has one

Aggregation device 2, which aggregates the data of the vehicle sensors 21 - 24, 210 - 215 to traffic data and transmitted to a central device 1 by means of suitable communication means C2x. The central device 1 is shown as a cloud.

The vehicle sensors 21 - 24, 210 - 215 can be configured in many ways. This can already be understood as fused data 21. This fused data can come from other controllers. A central control unit 210 for providing driver assistance or safety functions is conceivable. Further, LIDAR sensors 211, cameras 212, ultrasonic sensors 213, radar sensors 214, vehicle occupant sensing systems, or driver assistive functions, or other sensors 215 may provide their data directly or via the central controller 210. Furthermore, it is conceivable that sensors 22, 23, 24 do not initially provide their data to the fusion 21, but instead transmit it directly to the aggregation device 2. In the illustrated vehicle, these are the data of a device for high-precision position determination 22 or a navigation device 23 and sensor systems for

Detection of vehicle occupants or for assisting functions for the driver 24.

The traffic data is captured by the cloud 1 and stored there.

The traffic data in the cloud 1 can be accessed by authorized persons 3, in particular authorities, such as, for example, the police, rescue services, the fire brigade and the like. Access can be made by transferring the data to the beneficiary or by allowing the authorities to access the data. For example. via a portal provided via the Internet.

Claims

claims

1. Method (100) for evaluating traffic data:

Detecting (101) traffic data by a central device and / or a cloud, in particular via a car-to-X communication means;

Caching (102) the collected traffic data in the central facility and / or the cloud;

Detecting (103) an accident signal by the central device and / or the cloud, in particular via a car-to-X communication means;

In response to the accident signal, evaluating and persisting (104) the collected traffic data in the central facility and / or the cloud.

2. The method (100) of claim 1, wherein the traffic data includes information about the location and timing of the recording of the traffic data and the

Accident signal have information about the location and time of the accident event and wherein in the step of evaluating and persisting (104) only the traffic data recorded and persisted within a predetermined range around the location of the accident event within a predetermined period before , during and after the accident event were recorded.

3. The method (100) according to any one of the preceding claims, wherein the

Traffic data includes at least one of the following information:

speed data

position data

Heading data

vehicle trajectories Number of passengers

road Conditions

Road Signs

Objects, objects, vehicles, pedestrian walks

Weather and / or weather conditions

Condition of the vehicle occupants, in particular, whether the seat belt are worn correctly and / or a child seat is used correctly and / or the driver is distracted or unfocused.

A method (100) according to any one of the preceding claims, wherein in the step of caching (102) the oldest data is overwritten by new data when the storage capacity of the cache is exhausted.

5. The method (100) according to any one of the preceding claims with the additional step of Übermitteins, wherein in the step of Übermitteins the Evaluated traffic data to another body, in particular an authority, in particular the police, the rescue service, the fire brigade udgl., Are transmitted.

6. Method (100) according to one of the preceding claims, wherein in the step of buffering 0 and / or in the steps of evaluating the traffic data for optimizing the detection systems with which the traffic data is detected are processed

A computer program configured to perform all the steps of the method (100) of any of claims 1 to 6.

8. A machine-readable storage medium on which the computer program according to claim 7 is stored. Apparatus arranged to carry out all the steps of the method (100) according to any one of claims 1 to 6.