DE102007037938A1 - Navigation system for motor vehicle, has processor device arranged so that travel time is calculated based on actual location and target location considering predicted traffic relevant events messages, and display displaying road map - Google Patents

Abstract

The system has a receiver (1) receiving messages e.g. weather message, of actual and predicted traffic relevant events, which are associated to location and time information objects. An input device (11) inputs a target location, and a location determination device determines an actual location. A processor device (13) is arranged so that travel time is calculated based on the actual location and the target location considering the predicted traffic relevant events messages. A display (12) displays a road map or route map and graphics objects e.g. icon, associated to the messages.

Description

The The invention relates to a motor vehicle navigation system.

It Automotive navigation systems are known based on calculate a probable travel time from the place of departure and destination.

From the DE 10139668 A1 In addition, a method is known for generating route-related weather and / or road condition information for a vehicle. In this case, the weather forecast data originating from an external source and data about the actual weather-related conditions in the environment of the motor vehicle are recorded with a central unit. Depending on this, information about the weather along the route is displayed on the driver's field of vision.

Of the Invention is based on the object, a motor vehicle navigation system specify through which an improved travel time calculation performed becomes.

These The object is achieved by the features of the independent claim solved. Advantageous developments of the invention are to refer to the dependent claims.

The Invention is therefore based on the idea, also predicted traffic-relevant events in the calculation of a travel time, and, where appropriate, when calculating a route. This can make a probable travel time more reliable be calculated.

A Travel time is often several hours. By The invention will be used in the calculation of travel time for the travel time relevant, in the future events considered. For example, a violent thunderstorm or a heavy rain shower, the for 14 clock for the A8 motorway at Holzkirchen is predicted when calculating a Munich travel time considered to Salzburg on the A8, though the calculated location of the vehicle at 14 o'clock on the A8 located at Holzkirchen. A consideration of this predicted For example, a weather event could be that the assumed speed of the vehicle at 14 o'clock at Holzkirchen on the A8 is not at 130 km / h but at 90 km / h lies.

• – eine Empfangseinrichtung zum Empfang von kontinuierlich und/oder über Rundfunk übertragenen Meldungen über aktuelle und prognostizierte verkehrsrelevante Ereignisse, beispielsweise Wettermeldungen oder Verkehrsflussmeldungen, denen jeweils ein Ortsinformationsobjekt und ein Zeitinformationsobjekt zugeordnet ist;
• – eine Speichereinrichtung zum Speichern der Meldungen;
• – eine Eingabeeinrichtung zur Eingabe eines Zielortes;
• – eine Ortsermittlungseinrichtung zur Ermittlung des aktuellen Ortes; und
• – eine Rechnereinrichtung, die derart eingerichtet ist, dass eine Route und/oder eine Reisezeit basierend auf dem aktuellen Ort und dem Zielort unter Berücksichtigung der prognostizierten und gegebenenfalls der aktuellen verkehrsrelevanten Meldungen berechnet wird.

A preferred motor vehicle navigation system comprises:

• A receiving device for receiving messages transmitted continuously and / or via radio about current and predicted traffic-relevant events, for example weather reports or traffic flow reports, to each of which a location information object and a time information object are assigned;
• A memory device for storing the messages;
• An input device for entering a destination;
• - A location determining device for determining the current location; and
• A computer device which is set up in such a way that a route and / or travel time is calculated based on the current location and the destination, taking into account the predicted and possibly the current traffic-relevant messages.

Preferably is a display device for displaying a road map or route map and to display messages associated with the messages Graphic objects, such as an icon, a symbol, a street color, a street pattern, an area color or a territory pattern, intended. The graphic objects can already do this be received message received or the message by the motor vehicle navigation system depending on the event reported by the message will be assigned. The computer device is advantageously set up so that messages in each case depending from the associated time information object of a corresponding one Time slice (time slot, time period, time point) can be assigned, that by the automatic or manual selection of one or more, in particular successive time slices, for example as part of a animated route preview that matches the selected one or more Time slices associated with messages are selected, and that the graphic objects associated with the selected messages according to the associated location information objects of Street map or route map overlaid displayed become.

Thereby the driver becomes comprehensive and easy to understand his journey, his travel time and, where appropriate, his route informing influencing traffic and weather events.

advantageously, the computer device is complementary or alternatively set up so that messages in each case depending from the associated time information object of a corresponding one Time slice can be assigned to that by the automatic or manually selecting one or more time slices the - or messages associated with the selected time slices be selected - and that at least one, a text message associated with a selected message, highlighted and / or as part of a route description, is pictured.

Thereby the driver becomes even more extensive and accurate about the his journey, his travel time and, where appropriate, his route and weather events.

The Selecting a time slice can also be done indirectly by that a route section is selected in this Time slice is probably used. Such a route section can for example by marking a corresponding list entry a route list.

In particular, the current or predicted weather reports can advantageously be displayed as follows when the corresponding time slice is selected:
A part of a road map is displayed on a display device based on a vector-oriented electronic road map. A message (weather report) is received and stored that includes a weather code, a surface description object (graphic object), a time information object and reference coordinates (location information object). The area description object may describe the size, orientation, and / or shape of the area by, for example, indicating coordinates of further corners or edge points of a geometric shape, or by specifying vectors that describe a geometric shape or a polygon based on the reference coordinates. The weather event is then displayed on the display device based on the weather report as a surface overlaid on the road map shown, in particular transparent or semitransparent.

Thereby is achieved simultaneously with the presentation of a vector-based Road map, especially this superimposed, in the right place relative to this road map a weather event can be displayed areally. Thereby A driver can be detected quickly and reliably in terms of location a current or forecasted weather event is informed.

Possibly are size information contained in the area description object still at the currently set zoom factor of the representation of Road map adapted to the driver as well the size reliable over one to inform current or forecasted weather event.

Preferably The vector-oriented electronic road map is based on nodes and edges or is described by the node each assigned the coordinates of a defined coordinate system are. Because the reference coordinates are also given by coordinates described or writable the defined coordinate system are (if necessary after an appropriate conversion), can the flat weather presentation just the right place or to be assigned to the correct node of the road map and so on the road map in the right place being represented.

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

1 shows a simplified block diagram of a motor vehicle navigation system;

2 shows a representation of several forecast time slots;

3 - 7 show variants of a representation of traffic-related messages.

1 shows a simplified section of a navigation system with a receiver 1 for receiving traffic-relevant messages, which are each assigned a location information object and a time information object, with a decoder 2 for decoding the messages, with a memory device 3 for storing the messages, with an input device 11 for entering a destination, with a location determining device (not shown) for determining the current location, with a computer device 13 , with an optionally exchangeable storage device 5 for storing a digital road map, with a storage device 7 for storing driving behavior data and with a display device 12 (Display) for displaying a road map or route map and for displaying graphic objects associated with the messages.

• – Verlustzeitmodul 4 zur Berechung der Verlustzeit pro Meldung;
• – Berechnungsmodul 6 zur Berechung einer Route und einer Reisezeit;
• – Listenmodul 9 zur Erstellung einer Routenliste und zur Bestimmung zugeordneter Einzel-Reisezeiten oder Routenabschnittszeiten;
• – Grafikmodul 8 zur grafischen Aufbereitung der Straßenkarte;
• – Anzeigemodul 10 zur Organisation der Anzeige auf der Anzeigeeinrichtung.

The computer device 13 may include the following modules in terms of hardware and / or programming:

• - loss time module 4 to calculate the loss time per message;
• - Calculation module 6 to calculate a route and a travel time;
• - List module 9 for creating a route list and for determining assigned individual travel times or route section times;
• - Graphic module 8th for graphic processing of the road map;
• - Display module 10 for organizing the display on the display device.

By This car navigation system can be digitally coded Receive messages and the corresponding associated with the messages Graphic objects in the correct place on the road map shown in the display being represented.

• – dass eine Route und eine Reisezeit basierend auf dem aktuellen Ort und dem Zielort unter Berücksichtigung der aktuellen und prognostizierten verkehrsrelevanten Meldungen berechnet wird,
• – dass Meldungen jeweils in Abhängigkeit von dem zugeordneten Zeitinformationsobjekt einer entsprechenden Zeitscheibe zugeordnet werden,
• – dass durch die Auswahl einer Zeitscheibe die der Zeitscheibe zugeordneten Meldungen ausgewählt werden,
• - dass die den ausgewählten Meldungen zugeordneten Grafikobjekte entsprechend den zugehörigen Ortsinformationsobjekten, der Straßenkarte oder Routenkarte überlagert, angezeigt werden (3, 4, 5 und 6 (mehrere Zeitscheiben sind gleichzeitig ausgewählt)), und/oder
• – dass eine, einer ausgewählten Meldung zugeordnete, Textnachricht, insbesondere hervorgehoben und/oder als Teil einer Routenbeschreibung, dargestellt wird (7).

The computer device 13 is programmed in such a way that

• That a route and a travel time are calculated based on the current location and the destination, taking into account the current and predicted traffic-related messages,
• That messages are assigned to a corresponding timeslice depending on the assigned time information object,
• That by selecting a time slice, the messages associated with the time slice are selected,
• that the graphic objects associated with the selected messages are displayed according to the associated location information objects superimposed on the road map or route map ( 3 . 4 . 5 and 6 (multiple time slices are selected simultaneously)), and / or
• In that a text message associated with a selected message, in particular highlighted and / or as part of a route description, is displayed ( 7 ).

there It is possible that initially a route without Consideration of the current and predicted traffic relevant Events is calculated and then - if present traffic-related events concerning the calculated route, the travel time for this route under consideration the current and forecast traffic events is calculated. Optionally, an alternative route may follow thereafter be calculated to the travel time-prolonging events to drive around.

alternative For this it is possible to have a route from the beginning taking into account the current and projected traffic-related events is calculated. The predicted rice time then results directly from this route. If necessary, can Following this, an alternative route will be calculated again.

To the Reiszeitberechnung becomes - as in 2 first the time slice ZS1, which contains the currently relevant messages and events, is taken into account (validity up to N minutes). Based on these events and the associated travel time extensions, it calculates where the vehicle is after N minutes: this location is the transition point to the next time slot. Based on the predicted events of the second time slice ZS2 and the associated travel time extensions, it is calculated where the vehicle is after 2 × N minutes: this location is the transition point to the next time slice, etc.

To The route calculation and travel time calculation can be time slices individually selected by the driver by means of a suitable control element be or in the context of an animated route preview one after the other be called. The corresponding messages or the corresponding Graphic objects then become a representation of a digital location Road map overlaid displayed.

Around the temporal course of the traffic situation and the weather conditions for To present the driver easily comprehensible will become more in the following Variants described:

3 to 5 show three representations of a timelapse presentation or an animated route preview.

It is the section of a digital road map shown. Superimposed on this are graphic objects WE1, WE2, WE3, VE1, VE2, VE3, VE4 indicating a weather event WE1, WE2, WE3 or a traffic event VE1, VE2, VE3, VE4 represent.

In 3 the time slice is selected for the time t = 0. Accordingly, the messages whose time information object (forecast time) can be assigned to this time are selected. In accordance with the location information object (location coordinates) which is also respectively assigned to these selected messages, the graphic objects WE1, VE1, VE2 respectively assigned to the selected messages are superimposed on the road map. In addition, the current (t = 0) position of the vehicle is marked.

In 4 the time slice is selected for the time t = N. Accordingly, the messages are selected whose time information object is assigned to this time. According to the location information object, which is also assigned to these selected messages, the graphic objects WE2, VE3 assigned to the selected messages are superimposed on the road map. In addition, the predicted position of the vehicle is marked at time t = N.

In 5 the time slice is selected for the time t = 2 × N. Accordingly, the messages are selected whose time information object is assigned to this time. According to the location information object, which is also assigned to these selected messages, the graphic objects WE3, VE4 assigned to the selected messages are superimposed on the road map. In addition, the predicted position of the vehicle is marked at time t = 2 × N.

6 shows a route display based on the route planning done the route to the destination is displayed as a simplified, in particular linearized, representation of the road map and the road (s) to be traveled. For orientation important road intersections, locations and / or other landmarks are schematically included in the presentation. Several time slices ZS with the associated messages are selected simultaneously. Accordingly, the graphic objects WE, VE assigned to the selected messages are displayed. However, for each time slice, only the section of the road map together with superimposed graphic objects is shown in simplified form, which is probably also used in the affected time slice.

7 shows the presentation of a route list, which lists partial routes (route until the next driving instruction) and the traffic-relevant events expected on the route. For each partial route, an appropriate travel time, which has been calculated according to the method described above, can be specified. Alternatively, the estimated (clock) time at which the sub-route is traveled is indicated.

The traffic-related events can be associated with it associated loss times. The selection of a time slice or a list entry TM (partial route or traffic-relevant Event) leads to a marking of the corresponding List entries and a highlighted representation of the assigned Route section or graphic object in the road map representation

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 10139668 A1 [0003]

Claims (3)

Motor vehicle navigation system - with a receiving device ( 1 ) for receiving messages about current and predicted traffic-relevant events, to each of which a location information object and a time information object are assigned, with a memory device ( 3 ) for storing the messages, - with an input device ( 11 ) for entering a destination, - with a location determining device for determining the current location and - with a computer device ( 13 ) arranged to calculate a travel time based on the current location and the destination, taking into account the predicted traffic related messages. Motor vehicle navigation system according to claim 1 - with a display device ( 12 ) for displaying a road map or route map and for displaying graphic objects associated with the messages, - in which the computer device ( 13 ) such that messages are respectively assigned to a corresponding timeslice depending on the assigned time information object, that the messages associated with the time slice are selected by the selection of a timeslice, and that the graphic objects associated with the selected messages correspond to the associated location information objects Road map or route map overlaid. Motor vehicle navigation system according to one of the preceding claims, - in which the computer device ( 13 ) is set up in such a way that messages are respectively assigned to a corresponding timeslice depending on the allocated time information object, that the messages associated with the time slice are selected by the selection of a timeslice, and that a text message assigned to a selected message is highlighted and / or as part of a route description.