DE102006001819A1 - Traffic news e.g. information and message, displaying method for vehicle navigation system, involves filtering relevant information from received information depending on determined route, and displaying relevant information at device - Google Patents

Abstract

The method involves receiving a set of traffic information through a navigation system (N) of a vehicle (F), and determining a route based on an actual position of the vehicle, where the vehicle is moved on the route. Relevant traffic information is filtered out from the set of received information depending on the determined route, and the relevant information is displayed at a display device (ANZ) of the system of the vehicle. An independent claim is also included for a navigation system with a position determining system for determining an actual position of a vehicle.

Description

The The invention relates to a method for displaying traffic reports on a display device of a navigation system and a corresponding Navigation system.

The Increase in vehicle traffic on the roads and related Traffic jams and travel time extensions to lead increased efforts worldwide, the driver of a vehicle in time about traffic impairments to inform on its route, so that he may alternate routes choose can.

It are a variety of methods of disseminating traffic information known, such as RDS-TMC (Radio Data System - Traffic Message Channel), TPEG (Transport Protocol Experts Group), or Mobile-based services (for example BMW ASSIST V-Info). With These procedures help to generate traffic reports (traffic news, Traffic information), in particular from vehicle navigation systems received, processed and accordingly on a display device being represented.

Known, already developed methods of this kind have the problem from the multiplicity of the received traffic reports the in the respective Select driving situation relevant traffic reports and still not satisfactorily resolved. This is especially true in the case, that the navigation system was not known by the driver, which route or which destination the driver wants to drive. The main problem lies in the regularly too large number of traffic announcements displayed on the display device, which leads to an information overload lead the driver can.

Of the Invention is therefore the object of a technical teaching indicate with which on the display device of a navigation system only for the driver in the respective driving situation relevant traffic reports to be displayed.

These The object is solved by the features of the independent claims. advantageous Further developments of the invention are the dependent claims remove. In the context of the invention are also developments of the independent System claim that is the dependent method claims correspond.

The Accordingly, the invention is also based on the idea, in particular in deactivated route guidance, to determine the most likely route in the current situation and, based on this most likely route, the relevant ones Traffic reports from a variety of signaled traffic reports filter out and on the display device of a navigation system display. The current situation of the vehicle is thereby preferably described by the current position of the vehicle.

The Traffic information can be displayed as a symbol or text. The traffic reports can linked to information be the most up to date and urgency of the traffic message, and / or the place, the region, the route or section of the route to or on itself Refer to traffic reports, specify.

By the invention is achieved that regularly only the traffic reports be displayed on the display device of a navigation system, the for the driver to choose his route particularly likely and / or are relevant.

Of the Term "navigation system" is in the context of Invention and also includes systems which only determine the current position of the vehicle.

Preferably Beyond the most likely route more, in particular also probable routes determined, and these preferably sorted by probability and possibly saved. Dependent on from these other routes can then from the multitude of received traffic reports more Relevant traffic reports are filtered out, and these, preferably sorted by relevance, stored and / or on the display device, especially sorted by relevance and / or more or less highlighted, being represented.

To a preferred embodiment in addition to the current position of the vehicle, further data for the determination the most likely route used, such as the current day of the week, the current time, the driver identity, the current Direction of the vehicle, the current speed of the vehicle, the current average speed of the vehicle currently took advantage of Street style, the current tank contents that last passed with the vehicle Positions or waypoints, and / or the history of the selected or driven routes, in particular in connection with one or more the just mentioned further data.

The use of such further data increases the reliability of determining the most probable route and thus improves the selection of relevant traffic messages to be displayed from the sum of all received traffic traffic reports.

Preferably are several positions or waypoints which the vehicle is in Often the past happened or where the vehicle has often been in the past has, saved, and in addition to those positions or waypoints their assigned one or several routes stored, which, starting from the corresponding Position or the corresponding waypoint, were used most frequently. is the vehicle at such a stored position or near such a stored position, so will this position associated most common Route considered the most likely route and only or preferred such traffic messages related to this route are displayed, i.e. for example, on this route or near it Route lie.

Especially preferred is an embodiment after which next to the most likely route further data for Selection of relevant traffic reports are used as For example, the current day of the week, the current time, the Driver's identity, the current direction of the vehicle, the current speed of the vehicle, the current average speed of the vehicle, the currently used Street style that current tank contents, the timeliness of the traffic report, the Type of traffic announcement, the urgency of a traffic announcement, the last positions or waypoints passed by the vehicle, and / or the history of the selected ones or driven routes, in particular in connection with one or more of the other data just mentioned.

So can For example, from the traffic reports that are most likely Route, in a second step, the relevant and to be displayed Traffic reports by consideration the current average speed (for example averaged over the last 2 km) can be determined by the fact that with larger average speed Traffic reports are also displayed, which extend to a further from refer to the current location remotely, whereas at a lower average speed only traffic reports be displayed, focusing on a closer to the current position refer to lying place.

Preferably Routes are each assigned a route probability, the describes with what probability the vehicle is on the corresponding route will move. Depending on the routes whose associated route probability over a predetermined probability threshold lies, are from the multitude of received traffic reports relevant traffic messages filtered out and on the display device shown. Alternative or supplementary this is provided, depending on of the n (a predetermined number) most likely routes traffic information relevant to the plurality of received traffic reports filter out and display on the display device.

A advantageous development of the invention provides that the current Position of the vehicle and / or other data according to a predetermined mapping rule on a most likely route be imaged. The mapping rule can be, for example on a neural network, on the weights of a neural network, on one or more thresholds, on a mathematical Formula, on a variety of imaging protocols and / or on based on a multi-column mapping table. The mapping rule can changed accordingly when the route on which the vehicle actually moves, deviates from the most likely route or deviates frequently. This will Determining the most likely route constantly to the driving habits the driver and / or other circumstances, such as temporary road closures or seasonal route preferences, customized.

Above standing task is also solved by a navigation system with one, in particular satellite-based, Position determining device for determining the current position of the vehicle in which the navigation system is located. It is also a receiving device for receiving a plurality of traffic announcements, a display device for displaying traffic reports, and a computing device is provided, which is set up in this way is that on the basis of the current position of the vehicle a most likely route on which the vehicle will move, is determined, and that depending from the most likely route from the multitude of received Traffic messages relevant traffic reports are filtered out and displayed on the display device.

in the The invention will now be described by way of example with reference to FIG closer to the following figures explains:

1 shows a schematic representation of an embedded in a traffic reporting system navigation system;

2 shows a flowchart of a method for displaying traffic information on a display device of a navigation system.

1 shows a vehicle F instal Liertes navigation system N with a display device ANZ, such as a graphic display, for displaying traffic information in the form of text or in the form of, for example, on an electronic map displayed symbols.

In a central facility Z traffic information (traffic data) spatially resolved collected, processed and / or cached. Direct from the central device Z (as shown), or with interposition another transmission device, for example, an internal or external service provider Traffic reports preferably to several vehicles at the same time sent or signaled. This can be done on the basis of a radio station or a mobile communication system.

The from the central facility Z signaled traffic reports, which the traffic condition in a certain region or on a certain road section are described by a corresponding receiving device EE of the navigation system N, such as a radio receiver or a mobile radio receiver, received, possibly preprocessed or decoded, and to a computer device RE of the navigation system N transferred.

simultaneously is powered by a satellite-based, in particular GPS (Global Positioning System) -based, position-finding system POS the current location the vehicle determined and corresponding position information also transmitted to the computer device RE of the navigation system N.

The Computer device RE can be used as a program-controlled processor device or be designed as an application-specific integrated circuit, and is designed such that the of the position detection system POS determined position or the corresponding data according to a in the computer device RE or in an associated memory device stored mapping rule automatically to a most likely Route on which the vehicle will move to be mapped.

at the picture can depending on the design variant the invention next to the current position of the vehicle F more Information considered as input variables become.

The Computer device RE is also set up such that, based on the most likely route determined, relevant traffic information automatically filtered out of the multitude of received traffic reports be displayed on the display device ANZ. In the Selection of the relevant traffic reports to be displayed can each according to variant the invention next to the determined most likely route more Information to be considered.

provides later in a comparison between the most likely found Route and the actual Route on which the vehicle was moved, find out that these are from each other deviate, the mapping rule used is changed so that which by means of the changed Figure prescription determined most likely route with the actual Route on which the vehicle was moved, or at least matches matches better as before.

The modified Mapping instruction will later be used to image further, positions most likely delivered by the position-finding system POS Route used.

2 shows the flow of a concrete and simple example of a display of traffic reports on a display device of a navigation system. This method, depending on the variant in combination with the basis of 1 system or independently of this system.

In a first step 1 is broadcast from a central facility, such as a radio station, a variety of traffic reports.

In a second step 2 the position of a vehicle in which a navigation system is located is determined by means of a position determination system.

In a third step 3 the traffic messages or corresponding data emitted by the central device are at least partially received by a receiving device in the vehicle.

In a memory device of the vehicle or of the navigation system, various positions on which the vehicle has already moved in the past are stored. Furthermore, the routes or route sections respectively assigned to these positions are stored, on which the vehicle has moved most frequently starting from the respective position. In addition, the remaining routes, on which the vehicle has moved starting from the respective position, are also completely or partially stored together with a frequency information, for example the number of uses of the corresponding route, assigned to the corresponding position. The Entity or parts of this information, which are stored for example in the form of a table, can be regarded as part of the mapping rule for mapping the current position to the most probable route.

In a fourth step 4 Then a route is read from this table, which is assigned to the current position of the vehicle as the most frequent route. This route is currently considered the most likely route.

Based on this most likely route will be in a fifth step 5 From the traffic reports received, the traffic reports filtered out and displayed for those in step 4 determined route are particularly relevant, for example, the traffic reports that relate locally to this route.

In a sixth step 6 the route actually selected by the driver and driven by the vehicle is compared with the route previously determined as the most probable route. If these do not match, the mapping rule is changed. In the present example, for example, the frequency of the actually traveled route in the table can be increased accordingly. If both routes match, then the frequency of the actually traveled or the determined route can likewise be increased accordingly.

The Mapping rule is according to a preferred variant the invention by a self-learning system, such as an artificial neural network, realized. The calibration (learning process) of the artificial neural network is preferably based on the routes actually selected. The learning process of an artificial neural network itself is known in the art, which is why at this Job will not be discussed further.

alternative or in addition For this purpose, the use of genetic algorithms is provided, which are capable of learning and the functional relationship between input quantities and Output variables dynamic adjust so that a quality indicator, which in the context of the invention to a deviation between most probable Route and actually selected Route based, continuously improved (enlarged or reduced) is. Such genetic algorithms can be used with limited resources (For example, computing power and memory requirements) as software implement, and as such are also known to those skilled in the art.

A variant The invention provides that in addition to the current position of the vehicle more information in identifying the most likely Route on which the vehicle is going to be used. In addition, next to the most likely route a predetermined number determined from other most likely routes. To select the relevant traffic reports from all received traffic reports next to the most likely routes also more information considered and Different degrees of relevance to the different traffic reports allocated. The traffic reports can then be different Criteria, sorted by relevance degree, for example and / or only a predetermined number of traffic reports with the highest Relevance degree are displayed and / or only traffic announcements presented whose degree of relevance exceeds a given relevance threshold.

A variant The invention provides that the threshold values for the degree of relevance of the driver can be influenced that depending on preference the driver more or less relevant traffic information to the driver are displayed. The selection of relevant traffic information can thus the individual needs adapted by the driver.

As soon as the actual Route deviates from the most likely route, depending on a recent most likely one of a current position of the vehicle Route determined and based on relevant and to be displayed Traffic reports from the multitude of received traffic reports filtered out.

Claims (8)

Method for displaying traffic reports on a display device (ANZ) of a navigation system (N), in which a plurality of traffic reports are received by the navigation system (N) of a vehicle (F) ( 3 ), In which, on the basis of the current position of the vehicle (F), a most probable route on which the vehicle (F) will move is determined ( 4 ), and - in which, depending on the most probable route, traffic messages relevant to the plurality of received traffic reports are filtered out and displayed on the display device (ANZ) ( 5 ). Method according to Claim 1, - in which, in addition to the most probable route, further probable routes are determined and, depending on this, further relevant traffic reports are filtered out of the plurality of received traffic reports and displayed on the display geinrichtung (ANZ). Method according to one of the preceding claims, - in which next to the current position of the vehicle (F) further data for Determination of the most likely route to be used. Method according to one of the preceding claims, - in which next to the most likely route more data to choose from Relevant traffic reports are used. Method according to one of claims 2 to 4, in which routes in each case a route probability is assigned, which describes with what probability the vehicle (F) on the corresponding Route will move, and at which, depending on the routes whose associated route probability over a predetermined probability threshold lies, from the variety of received traffic reports relevant Traffic reports are filtered out and on the display device (ANZ). Method according to one of the preceding claims, in the current position of the vehicle (F) and / or other data according to a predetermined mapping rule on a most likely route be imaged. The method of claim 6, wherein the mapping rule changed accordingly when the route on which the vehicle (F) actually moves, deviates from the most likely route. Navigation system (N) - With a position detection device (POS) for determining the current position of a vehicle (F), where the navigation system (N) is located, - with a Receiving device (EE) for receiving a plurality of traffic reports, - with a Display device (ANZ) for displaying traffic reports, and - with a Computer device (RE), which is set up so that on Base of the current position of the vehicle (F), one most likely Route on which the vehicle (F) will move determined will, and that in dependence from the most likely route from the multitude of received Traffic messages relevant traffic reports are filtered out and displayed on the display device (ANZ).