JP2000258176A - Dynamic map data update system - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a dynamic map data updating system configured so that the most recently updated map data can be displayed on a navigation device by a downlink. SOLUTION: When a vehicle travels on a route not included in the route data, traveling history data including position information is transmitted to a center device 15.
If the center device 15 determines that the route is not in the route data based on the traveling history data transmitted from the vehicle 1 and the traveling history data transmitted from the vehicle, it is determined that the route is a new route not in the route data of the vehicle. Means 3 for transmitting indicated route information
And means 1 for displaying the new route information transmitted from the center device 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dynamic map data updating system, and more particularly, to a system in which the most recently updated map data can be displayed on a display unit of a navigation (hereinafter abbreviated as "navigation") device by a downlink. Things.

[0002]

2. Description of the Related Art In a conventional VICS system, F
Road traffic information can be received by in-car navigation from facilities such as M multiplex broadcasting and radio beacons and optical beacons provided on the side of the road.

[0003] At this time, the vehicle ID information is transmitted by using a transmitter mounted on the vehicle at the same time as the reception.
The information will be sent to the S center, the traffic information center, the Public Safety Commission and the road manager, and will be used as new traffic congestion, accident information, and expressway information.

[0004] In the conventional navigation system, the map data of the navigation device is normally updated as early as one year, and the data of roads which increase day by day, that is, the data of roads which are not included in the map data, are required. Vehicles equipped with a navigation system could not be updated until one year later.

In general, as shown in FIG. 7, a navigation apparatus includes a vehicle position calculating means 20 for calculating a vehicle position, an information searching means 23 for searching for a facility or the like to be used, Route searching means 21 for searching for the route of the vehicle, guidance means 22 for guiding the vehicle along the searched route, and display control means 25 for displaying on a display 26 such as a liquid crystal display or a CRT display. ,
Map data 27 stored in a storage medium such as a CD-ROM
It is composed of

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and provides a dynamic map data updating system configured so that the most recently updated map data can be displayed on a navigation device by a downlink. The purpose is to:

[0007]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a dynamic map data updating system comprising a navigation device mounted on a vehicle and a center device for exchanging information with the navigation device. hand,
When the center device determines that the route is not included in the route data based on the travel history data transmitted from the navigation device, the center device transmits the route information indicating a new route not included in the route data to the navigation device. Means for transmitting, when the vehicle travels a route not included in the route data, travel history data including position information to the center device, and a new route not included in the route data. Means for receiving, from the center device, route information indicating that the new route information received from the center device is displayed on a display unit, and the navigation device and the center device dynamically map data. It is characterized by updating.

As described above, according to the dynamic map data updating system of the present invention, it is possible to obtain the effect that the most recently updated map data can be displayed on the navigation device via the downlink.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the overall configuration of a dynamic map data updating system according to an embodiment of the present invention. In FIG. 1, each vehicle 10 includes a navigation device 1, a map data file 2 capable of updating data, and a map data file 2. It has. Here, the navigation apparatus 1 includes at least a vehicle position calculating unit for calculating a vehicle position based on a sensor input, a route history data file for recording an additional route according to an instruction from the vehicle position calculating unit, a center device, There is provided communication means for obtaining the latest map data through communication and transmitting route history data found by the own vehicle to the center device.

The center device 15 includes a center unit 3 having communication means for exchanging data with each vehicle 10,
A map data file 4 capable of updating data and a traveling route history file 5 for recording route history data sent from each vehicle 10 are provided.

The operation of the dynamic map data updating system according to the embodiment of the present invention shown in FIG. 1 will be described below with reference to FIGS.

1 to 6, when each vehicle travels on a road not included in the map data, the route history data is transmitted (uplink) to the center device 15 using the navigation device 1 of the vehicle 10. The center device 15 records and stores this in the travel route history file 5.

This will be described with reference to FIG. 2. In the navigation device 1 of each vehicle, map matching is performed, and if the matching is successful, the own vehicle position is updated as it is. When it can be estimated that the vehicle is traveling on a new road, the traveling route recording process, that is, the own vehicle position, the own vehicle vector, and the like are continuously recorded and accumulated as additional route information in the route history data file.

FIG. 3 illustrates a process in the case where the matching is deviated. When the vehicle moves from to, the vehicle enters a non-matching state. Is recorded as additional route information in the route history data file.

FIG. 4 shows a communication process between the center device 15 and the vehicle 10. In FIG. 4, when a request for transmission of new information is made from the vehicle 10 to the center device 15, the route information stored in the center unit 3 in the vehicle 10 is returned from the center device 15 to the vehicle 10. On the other hand, the additional route information found and recorded by the vehicle 10 is transmitted from the vehicle 10 to the center device 15.

FIG. 5 shows a vehicle recorded by the center device 15.
This figure shows a configuration related to recording of route history data uplinked from 10, and so to say, illustrates the contents of the traveling route history file 5. In FIG. 5, the recording / accumulation of the map data in the center device 15 is performed by using route history data (including data such as a latitude / longitude point or a speed vector sequence) including route information estimated to be found by the vehicle. Point sequence information recording means 6 which records and accumulates as point sequence information (abbreviated as point sequence info in the figure), and a point sequence or vector sequence representing the same road uplinked from a plurality of vehicles into one path Aggregated as links and recorded
It comprises an information aggregating means 7 to be accumulated, and a path information storage means 8 for storing path history data of only the path link and point sequence information from the information aggregating means. Therefore,
In the center device 15, the cost of the new route link can be created from the speed vector sequence in the route history data, and the cost can be recorded and accumulated, so that if the vehicle requests the new route data, Can make the link cost downlink and use it for route search and the like.

As shown in FIG. 5, the point sequence information includes
A certain vehicle obtains a sequence of triangles, another vehicle obtains a sequence of squares, and another vehicle obtains a sequence of circles. If they are determined to be the same road, they are recorded as one route link.

It is also possible to perform an operation of searching between the end points of the route link to be added, and actually adding it if the cost is lower than the original cost. As a result, unnecessary links can be eliminated, and useful links can be additionally registered.

FIG. 6 is a diagram for explaining a downlink of the new route information to the vehicle from the center device. When a road display request including an area for navigation display is transmitted from the vehicle in FIG. In the device 15, as the new route information, if the field survey has not been completed, it is returned as point sequence information in the unconfirmed area, and if it has already been subjected to the field survey, it is returned as confirmed route information. I will send it back. In this case, the new route information is additionally displayed as a route link in the vehicle, but the display method of the additional route is changed between unconfirmed and confirmed.

If there is a lot of new route information to be additionally displayed in the downlink in the center device 15, it is possible to assign a priority to the new route information so that the new route information is downlinked to the vehicle. desirable. Priorities include, for example, links with abundant traffic,
The link should be down based on the link that could be passed at a high speed, the link close to the own vehicle position, etc.

Even when the new route information is additionally displayed as a route link in a vehicle, if there is a large amount of data on the route, it is likely that the route is a main route, so the road is emphasized (for example, , Make the road width wider).

Further, the new route information in the area returned from the center device 15 is used for search, guidance, and display in the navigation device 1 of the vehicle 10, but the new route information is not displayed or displayed. It is desirable that the user can select whether or not to use for guidance guidance.

Also, the storage capacity of the navigation device is naturally limited, and when this limit is reached, it is necessary to delete and store a part of the stored link information to receive and store new link information. Comes out.

Therefore, the user of the navigation device is allowed to set an evaluation value of link information based on the usefulness of the link, and based on this, a link with a low evaluation is deleted, and new link information is received and stored. It can be so.
Therefore, as the usefulness of the link, for example, it is assumed that (1) a link around the own vehicle position has a high usefulness. (2) It is assumed that the links used for the search and the links remaining in the search result have high usefulness. (3) It is assumed that a link that has actually traveled has high utility. (4) It is assumed that a link of an area (a map storage unit) where a car frequently travels is highly useful. (5) It is assumed that a highly reliable link is highly useful as link information. (6) Assume that a new link is highly useful. (7) It is assumed that a link that can pass at a high speed has high utility. (8) It is assumed that links that can cross railways, rivers, etc. are highly useful.

The order in which the user evaluates the link with respect to the usefulness of such a link is arbitrary, and based on this, the link information with a low evaluation is appropriately deleted, so that the navigation capacity is limited. New link information can be received and stored in the device.

In the above description, it should be noted that the route data may refer not only to a single link but also to a plurality of links.

[0028]

As described above, the present invention relates to a dynamic map data updating system including a navigation device mounted on a vehicle and a center device for exchanging information with the navigation device. When it is confirmed that the route is not in the route data based on the traveling history data transmitted from the navigation device, a unit that transmits route information indicating a new route not in the route data to the navigation device. At least, the navigation device is configured to transmit, when the vehicle travels along a route not included in the route data, travel history data including position information to the center device, and to indicate that the route is a new route not included in the route data. Means for receiving the route information from the center device, and the new route information received from the center device. Means for displaying information on the display unit, wherein the navigation device and the center device dynamically update the map data. According to the dynamic map data update system of the present invention, the latest update is performed. There is an effect that the displayed map data can be displayed on the navigation device by the downlink.

[Brief description of the drawings]

FIG. 1 is a diagram showing an overall configuration of a dynamic map data updating system according to an embodiment of the present invention;

FIG. 2 is a flowchart illustrating an operation of a traveling route recording process in the vehicle according to the embodiment of the present invention;

FIG. 3 is a diagram for explaining a non-matching state which is a premise of recording a traveling route in the vehicle according to the embodiment of the present invention;

FIG. 4 is a time chart for explaining a communication process between the vehicle and the center device;

FIG. 5 is a diagram showing a configuration related to recording of route history data uplinked from a vehicle to be recorded by a center device,

FIG. 6 is a diagram for explaining a downlink of new route information from a center device to a vehicle,

FIG. 7 is a diagram showing a general configuration of a conventional navigation device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Navigation apparatus 2 Updatable map data file (vehicle) 3 Center part 4 Updatable map data file (center apparatus) 5 Travel route history data file 6 Point sequence or vector sequence recording means 7 Information aggregating means 8 Route information storage means 10 Vehicle 15 Center device 20 Vehicle position calculation means 21 Route search means 22 Guidance means 23 Information search means 24 Memory 25 Display control means 26 Display means

Claims (24)

[Claims] 1. A dynamic map data updating system comprising a navigation device mounted on a vehicle and a center device for exchanging information with the navigation device, wherein the center device travels from the navigation device. If it is confirmed that the route is not in the route data based on the history data, at least a means for transmitting to the navigation device path information indicating that the new route is not in the route data, the navigation device, Means for transmitting travel history data including position information to the center device when the vehicle travels on a route not included in the route data; and receiving route information indicating that the route is a new route not included in the route data from the center device. And displaying the new route information received from the center device on a display unit. A dynamic map data updating system, wherein the navigation device and the center device dynamically update the map data. 2. A dynamic map data updating system comprising a navigation device mounted on a vehicle and a center device for exchanging information with the navigation device, wherein the center device travels from the navigation device. If the route is not in the route data but is unconfirmed based on the history data, at least a means for transmitting to the navigation device path information indicating that the new route is not in the route data but is unconfirmed, When the vehicle travels on a route that is not included in the route data, the navigation device transmits travel history data including position information to the center device; and that the new route is not confirmed in the route data but has not been confirmed. Means for receiving the route information shown from the center device; and Means for displaying route information which is a new route but has not been confirmed on a display unit in a form different from a normal route display form, wherein the navigation device and the center device dynamically update map data. Dynamic map data update system. 3. The traveling history data from a plurality of vehicles is uplinked when the center device confirms that the route is not included in the route data. Dynamic map data update system. 4. When displaying new route information received from the center device by the navigation device, when there is a large amount of data of the same route, the road is displayed with emphasis. The dynamic map data updating system according to claim 1 or 2. 5. The navigation device according to claim 1, wherein the navigation device allows the navigation device user to individually select whether to display or not to display the new route information received from the center device. 2. The dynamic map data updating system according to 2. 6. When the center device transmits route information indicating a new route that is not included in route data to the navigation device, a link with a large amount of traffic is preferentially downlinked. The dynamic map data updating system according to claim 1 or 2, wherein 7. When the center device transmits route information indicating a new route that is not included in route data to the navigation device, a link that has passed at high speed is preferentially downlinked. The dynamic map data updating system according to claim 1 or 2, wherein 8. When the center device transmits route information indicating a new route not included in route data to the navigation device, a link close to the own vehicle position is preferentially downlinked. The dynamic map data updating system according to claim 1 or 2, wherein 9. When the center device determines that the route is not included in the route data, a link cost is measured in consideration of a passing speed when the vehicle passes through the route, and the navigation device determines The dynamic map data updating system according to claim 1 or 2, wherein the link cost can be used for a route search. 10. A center unit having communication means for exchanging data with each vehicle, a map data file capable of updating data, and a traveling route history file for recording route history data sent from each vehicle. When the center unit confirms that the route is not in the route data based on the traveling history data transmitted from each vehicle, the center unit outputs the route information indicating a new route not in the route data. A center device comprising at least means for transmitting to a vehicle. 11. A center unit having a communication unit for exchanging data with each vehicle, a map data file capable of updating data, and a travel route history file for recording route history data sent from each vehicle. The center unit, based on the travel history data transmitted from each vehicle, is a route that is not in the route data but is unconfirmed, but is a new route that is not in the route data but is unconfirmed. A center device comprising at least means for transmitting route information indicating the above to the vehicle. 12. A vehicle position calculating means for calculating a vehicle position based on a sensor input, a route history data file for recording an additional route in accordance with an instruction from the vehicle position calculating means, Communication means for obtaining map data of the vehicle or transmitting route history data found by the own vehicle to the center device, and further, when the vehicle travels on a route not included in the route data, Means for transmitting travel history data including location information to the center device, means for receiving, from the center device, route information indicating a new route not included in the route data, and means for receiving the new route information received from the center device. A navigation device comprising means for displaying route information on a display unit. 13. A vehicle position calculating means for calculating a vehicle position based on a sensor input, a route history data file for recording an additional route in accordance with an instruction from the vehicle position calculating means, Communication means for obtaining map data of the vehicle or transmitting route history data found by the own vehicle to the center device, and further, when the vehicle travels on a route not included in the route data, Means for transmitting travel history data including position information to the center device, means for receiving, from the center device, route information indicating that the route is a new route that is not in route data but has not been confirmed, and A navigation device comprising means for displaying, on a display unit, the received route information which is the new route but has not been confirmed, in a form different from a normal route display form. Device. 14. The navigation device according to claim 12, further comprising a unit that stores the new route received from the center device. 15. When the storage capacity of the means for storing the new route is insufficient, in order to secure a new storage area, other unnecessary link information is deleted while leaving link information around the own vehicle position. The navigation device according to claim 14, wherein: 16. When the storage capacity of the means for storing the new route is insufficient, in order to secure a new storage area, the link information used in the search or the link information remaining in the search result is left unselected. The navigation device according to claim 14, wherein unnecessary link information is deleted. 17. When the storage capacity of the means for storing a new route is insufficient, in order to secure a new storage area, other unnecessary link information is deleted while leaving link information actually traveled. The navigation device according to claim 14, wherein: 18. When the storage capacity of the means for storing a new route is insufficient, in order to secure a new storage area, other unnecessary link information except link information of a region where a car frequently travels is left. 15. The navigation device according to claim 14, wherein is deleted. 19. When the storage capacity of the means for storing the new route is insufficient, in order to secure a new storage area, other unnecessary link information is left as link information with high reliability as link information. The navigation device according to claim 14, wherein the navigation device is deleted. 20. When the storage capacity of the means for storing the new path is insufficient, in order to secure a new storage area, other unnecessary link information is deleted while leaving new link information. 15. The navigation device according to claim 14, wherein 21. When the storage capacity of the means for storing the new route is insufficient, in order to secure a new storage area, other unnecessary link information is deleted while leaving link information that can pass at a high speed. The navigation device according to claim 14, wherein 22. When the storage capacity of the means for storing the new route is insufficient, in order to secure a new storage area, other unnecessary link information except link information capable of crossing a railway, a river, or the like is stored. The navigation device according to claim 14, wherein the navigation device is deleted. 23. In the navigation device according to claim 15, when the criteria for leaving the link information overlap, priorities are assigned between them, and based on the priorities. 23. The navigation device according to claim 15, wherein link information is left. 24. Search between end points of a link to be added,
24. The navigation device according to claim 1, wherein the cost is added when the cost is lower than the original cost.