DE102022000558A1 - Method for recording and updating a lost time in traffic disruptions - Google Patents

Abstract

The invention relates to a method for detecting and updating a lost time in traffic disruptions, in which a traffic service (3) transmits a target lost time in a predefined route section (2) caused by the traffic disruption to a vehicle (1), the vehicle (1) transmits the predefined route section (2) travels over and an individual actual time lost is recorded by means of a recording device, the target time lost transmitted by the traffic service (3) and the individual actual time lost recorded by the vehicle (1) are compared by means of a computer device and a target/actual deviation is determined,- the target-actual deviation is compared with a predefined limit value of the deviation by means of the computer device,- if the limit value of the deviation is exceeded and/or undershot by the target-actual deviation by means of a communication device, an updated lost time, i.e the actual lost time, to the traffic service (3) and/or he other vehicles (4) is transmitted. This enables up-to-date recording and processing of the lost times in the respective route section (2) and thus efficient traffic management.

Description

The present invention relates to a method for detecting and updating a lost time in traffic disruptions. The invention also relates to a vehicle with a computer device, a detection device, a communication device for carrying out this method.

From the DE 10 2018 006 027 A1 a method for determining traffic jam fronts and for transmitting data relating to traffic jam fronts to a number of vehicles is known. In this case, own vehicle trajectories are recorded by means of a number of preceding vehicles, which have previously traveled on the same route section as the number of vehicles, and are sent to a central unit. The central unit uses the received vehicle trajectories to determine whether there is a traffic jam front in the section of road. Furthermore, the degree of danger of the traffic jam front is determined by means of the central unit and data on the degree of danger of the traffic jam front are transmitted by means of the central unit. In this way, in particular, a method for determining traffic jam fronts is to be improved.

Typically, lost times in traffic disruptions are transmitted by a traffic information provider, such as a traffic service, to appropriate vehicles, for example motor vehicles. Typically, these are updated every two minutes and previously averaged from raw data, in particular trajectories of position data of the motor vehicles, by the traffic service, aggregated and, for example, transmitted via a traffic report protocol such as TPEG. The lost times are then distributed to the vehicles via a vehicle backend.

The disadvantage here, however, is that the lost times caused by the traffic disruption can change so quickly in the short term that the traffic information or lost times offered by the traffic service become inaccurate. However, due to imprecise downtimes, the information quality is low and, for example, a reliable diversion of following vehicles using a navigation system that processes these downtimes is only insufficiently possible.

The present invention is therefore concerned with the problem of specifying a method for detecting and updating a lost time in the event of traffic disruptions, by means of which the disadvantages known from the prior art can be overcome.

According to the invention, this problem is solved by the subject matter of independent claim 1 . Advantageous embodiments are the subject matter of the dependent claims.

The present invention is based on the general idea of enabling a significantly more precise and highly updated detection of lost times caused by traffic disruptions almost in real time and thereby guiding a traffic flow significantly more effectively. In the method according to the invention for detecting and updating a loss of time in the event of a traffic disruption, a target loss of time due to the traffic disruption is first transmitted from a traffic service to a vehicle in a predefined route section. Of course, such a transmission of a target time lost due to traffic disruption can only take place for those vehicles that then also drive on the predefined route section. The vehicle then travels the predefined route section and, in doing so, records an individual actual lost time by means of a recording device. The target time lost transmitted by the traffic service and the individual actual time lost currently recorded by the vehicle are then compared by means of a computer device and a target/actual deviation is calculated therefrom. This target/actual deviation is compared by the computer device with a predefined limit value for the deviation, with an updated lost time (actual lost time) is transmitted to the traffic service and/or to other vehicles. The vehicles used in the method according to the invention have a so-called vehicle backend and their communication device has communication channels for the dissemination of corrected traffic reports or currently recorded actual loss times. Such communication channels can be, for example, Bluetooth, radio or WLAN.

In comparison to a traffic service, the method according to the invention makes it possible to keep the respective lost times caused by traffic disruptions much more up-to-date and thereby to better inform other vehicles with regard to a route decision, a map display or a precalculated arrival time. In this case, the actual time lost measured by a vehicle can be prioritized according to a required deviation from the target time lost transmitted by the traffic service. Overall, it is thus possible with the method according to the invention to calculate lost times caused by traffic disruptions almost in real time, for example every 10 seconds update and thereby provide a significantly improved information basis for navigation systems in other vehicles.

In an advantageous development of the method according to the invention, ±10% or ±5 minutes are used for the limit value of the deviation. In order to avoid an informally less important update and thus reduce increased data transmission, it is desirable to transmit only those target/actual deviations from the respective vehicles to the traffic service or other vehicles that are necessary for a recalculation of an arrival time or a recalculation of a route change are actually relevant. It has been shown that a deviation of ±5 minutes represents a time deviation that actually indicates a change in the traffic jam or traffic situation in the predefined route section and is relevant when calculating other routes or new arrival times.

In a further discarded embodiment of the method according to the invention, the updated lost time (actual lost time) is/is transmitted to other vehicles via the communication device by means of push notifications and/or a publish-subscribe message. This non-exhaustive enumeration alone gives an idea of the diverse possibilities for transmitting information regarding updated actual downtimes to the traffic service or to other vehicles. The respective vehicles can also transmit an actual loss time to a cloud-based backend in a very understandable way, which then forwards it directly to other vehicles by means of a push message or a publish-subscribe message. It is also conceivable that a cloud-based vehicle backend would receive all corrected traffic reports, i. H. collects all individually recorded actual lost times with regard to a predefined route section and forwards them to other vehicles on request. In this case, the actual time lost can be transmitted to other vehicles (V2V) and/or to other locations (V2X), also depending on the respective availability of the data transmission options.

In a further advantageous embodiment, several vehicles save how often their individually determined actual downtime differs from that of the traffic service and report this to a respective vehicle backend, which creates temporal-spatial statistics when and where the actual downtimes determined by vehicles differ from that Target loss time of the traffic service deviates. As a result, the method according to the invention can be significantly refined further and significantly improved traffic routing can be achieved as a result, in particular also through improved information for navigation systems.

The vehicle expediently measures the actual time lost from a traffic jam entry position to a traffic jam exit position, with properties and parameters of the loss time measurement in the respective vehicle being configurable by the vehicle backend described in the previous paragraphs. The traffic jam entry position can be defined, for example, by a vehicle speed of less than 30 km/h at a distance of less than 1000 m from the start of the predefined route section. In addition or as an alternative, it is also possible for the traffic jam exit position to be defined by a speed of more than 60 km/h at a distance of less than 1000 m from the end of the predefined route section. In this way, all vehicles can be regulated for the recording of the actual time lost, whereby uniform standards can be set which simplify comparability of the actual time lost determined by the respective vehicles and validate the results determined therefrom.

The present invention is also based on the general idea of equipping a vehicle, in particular a motor vehicle in a convoy of vehicles, with a detection device, a computer device and a communication device, these components being designed to carry out the method described in the previous paragraphs. As a result, vehicles can be provided which enable significantly improved information collection and thus significantly improved control of a traffic flow.

Further important features and advantages of the invention result from the dependent claims, from the drawings and from the associated description of the figures with reference to the drawings.

It goes without saying that the features mentioned above and those still to be explained below can be used not only in the combination specified in each case, but also in other combinations or on their own, without departing from the scope of the invention.

Preferred exemplary embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description, with the same reference numbers referring to identical or similar or functionally identical components.

• 1a - c unterschiedliche Verfahrensschritte eines erfindungsgemäßen Verfahrens zur Erfassung und Aktualisierung einer Verlustzeit bei Verkehrsstörungen,
• 2 ein Geschwindigkeits-Zeit-Diagramm zur Verdeutlichung des erfindungsgemäßen Verfahrens.

They show, each schematically,

• 1a - c different process steps of a process according to the invention to record and update a lost time in traffic disruptions,
• 2 a speed-time diagram to illustrate the method according to the invention.

According to the 1a a vehicle 1 approaches a predefined route section 2 in which traffic disruptions occur. These traffic disruptions lead to a loss of time when driving through the predefined route section 2. A traffic service 3 transmits to the vehicle 1 a traffic disruption-related target loss of time in the predefined route section 2. In the further course of the process, the vehicle 1 now drives on the predefined route section 2, as according to 1b is shown and detects an individual actual loss time by means of a non-specified detection device. The target time lost transmitted by the traffic service 3 and the individual actual time lost recorded by the vehicle 1 are then compared by means of a computer device and a target/actual deviation is determined therefrom. This determined target/actual deviation is now compared with a predefined limit value for the deviation by means of the computer device in the vehicle 1, with an updated loss time which corresponds to the actual lost time, to the traffic service 3 and/or to other vehicles four (cf 1c ) is transmitted.

This enables the lost times to be expected in each case in the predefined route section 2 to be updated continuously, as a result of which there is a significantly improved, since permanent, update of the lost times to be expected in the predefined route section 2 .

In this case, ±15% and/or ±5 minutes can be used for the limit value of the deviation. If the target time lost transmitted by the traffic service 3 to the vehicle 1 in the predefined route section 2 deviates from the actual time lost determined by the vehicle 1 itself when driving through the predefined route section 2 by more than 15% and/or more than 5 minutes , the communication device of the vehicle 1 transmits the updated lost time, which corresponds to the actual lost time, to the traffic service 3 and/or to other vehicles 4, whereby, for example, navigation systems of the other vehicles 4 also receive updated data and thereby a significantly improved calculation of a possible arrival time is allowed.

The updated actual loss time can expediently be transmitted to other vehicles 4 via the communication device of each vehicle 1 by means of push notifications and/or a publish-subscribe message. It is also very understandable that the updated lost time is first transmitted from the vehicle 1 to the traffic service 3 and from there to the other vehicles 4 .

Several vehicles 1, which drive through the predefined route section 2 one after the other or in parallel, can also store how often their individual actual downtime differs from the target downtime of the traffic service 3 and report this to a respective vehicle backend, which creates temporal-spatial statistics, when and where the actual downtime determined by the vehicles 1 deviates from the target downtime of the traffic service 3 .

The vehicle 1 can calculate the actual time lost from a traffic jam entry position 5 (cf 2 ) to a traffic jam exit position 6 (cf 2 ) measure, the properties and parameters of the lost time measurement in the respective vehicle 1 can be configured by a vehicle backend.

The traffic jam entry position 5 can be defined by a speed of less than 30 km/h of the vehicle 1 at a distance of less than 1000 m from the start of the predefined route section 2 . The traffic jam exit position 6 can be defined by a speed of >60 km/h less than 1000 m away from the end of the predefined route section 2, as per the 2 is shown. There can be a respective spatial difference 7 at the beginning and at the end of the respectively predefined route section 2 .

The vehicle 1 according to the invention has a detection device, a computer device and a communication device for carrying out the method described in the previous paragraphs, which means that the traffic events are updated comparatively quickly and are therefore very up-to-date with regard to the lost times in the respective predefined route sections 2 .

With the method according to the invention and the vehicle 1 according to the invention, a traffic flow can be controlled much better and the navigation systems of the other vehicles 4 can also be constantly updated, in particular with regard to a calculation of a possible arrival time.

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 102018006027 A1 [0002]

Claims (6)

Method for detecting and updating a lost time in traffic disruptions, in which - a traffic service (3) transmits to a vehicle (1) a target lost time due to traffic disruption in a predefined route section (2), - the vehicle (1) drives on the predefined route section (2) and records an individual actual lost time by means of a recording device, - the target time lost transmitted by the traffic service (3) and the individual actual time lost recorded by the vehicle (1) are compared by means of a computer device and a target/actual deviation is determined, - the target/actual deviation is compared with a predefined limit value of the deviation by means of the computer device, - If the target-actual deviation exceeds and/or falls below the limit value of the deviation, an updated lost time, i.e. the actual lost time, is transmitted to the traffic service (3) and/or other vehicles (4) by means of a communication device. procedure after claim 1 , characterized in that ± 15% and/or ± 5 minutes are used for the limit value of the deviation. procedure after claim 1 or 2 , characterized in that the updated lost time is transmitted to the traffic service (3) and/or other vehicles (4) via the communication device by means of a push message and/or a publish-subscribe message. Method according to one of the preceding claims, characterized in that a plurality of vehicles (1) store how often their individual actual lost time in the predefined route section (2) deviates from that of the traffic service (3) and report this to a respective vehicle backend which creates spatial statistics when and where the actual downtime determined by vehicles (1) deviates from the target downtime of the traffic service (3). Method according to one of the preceding claims, characterized in that - the vehicle (1) measures the actual time lost from a traffic jam entry position (5) to a traffic jam exit position (6), - the properties and parameters of the measurement of the actual time lost in the vehicle (1) can be configured by a vehicle backend. Vehicle (1) with a detection device, a computer device and a communication device for carrying out the method according to one of the preceding claims.

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