JPH07282395A - On-vehicle navigation device - Google Patents

Abstract

PURPOSE:To obtain a safe and confortable response without executing a complicated operation by automatically switching over a display to a route map for superhighways at the time of traveling on a superhighway, and at the time of leaving from the superhighway, automatically returning the display to a normal map display. CONSTITUTION:At the time of traveling on a road for which no superhighway route map exists, a vehicle position estimating means 104 finds out the position of a vehicle and route map switching means 109 judges the non-existence of a route map and displays a map around the vehicle stored in a route map corresponding data storing means 108 on a screen. When the vehicle enters a superhighway, the means 109 switches over the control of a display means 106 to a route map display means 111 to display a route map. When a user does not require the route map, the user can return the route map to the normal map display by selecting a display switching key. When the vehicle leaves the superhighway, the means 109 judges the absence of the route map and automatically returns the display to normal map display. Thereby, route map display for superhighways can be automatically called or cancelled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle-mounted navigation device.

[0002]

2. Description of the Related Art In recent years, in-vehicle navigation devices have been subject to correlations between a traveling locus road shape obtained from a speed sensor and a direction sensor, or Global Positioning System (hereinafter
GPS. The vehicle position is shown to the user by displaying a map of the surroundings centering on the vehicle position estimated by decoding the absolute position of (1). However, on a high speed road such as a highway, unlike an ordinary road, the IC
(Interchange) -SA (Service Area) -PA
The locations such as (parking area) and JCT (junction) are used as landmarks, but on a map with a detailed display scale, the IC, SA, PA, and JCT around the vehicle cannot be fully displayed on the screen, making it difficult to understand the vehicle position. Also, on a wide area map,
Since the character / symbol density in the display screen is adjusted, the IC
Information on SA / PA / JCT is missing, or the next IC
・ There was a problem that it was not possible to estimate the detailed distance to SA / PA / JCT.

In order to solve this problem, a vehicle-mounted navigation device has been developed which has a display mode exclusively for expressways and can be switched by a user operation.
As a display mode only for expressways, only information about expressways around the vehicle is extracted and processed from the map information and displayed in an easy-to-see manner, or information such as expressways, IC names, and up / down lines is specified when getting on the expressway. Then, while setting the vehicle on the route map of the expressway, the vehicle position on the route map is controlled and displayed according to the traveled distance so that the vehicle position can be easily recognized even on the expressway.

[0004]

However, in the conventional highway display of the above-mentioned vehicle-mounted navigation device, it takes time to extract and process the information related to the highway, the response becomes poor, and the high-speed display is performed. There is a problem in that a complicated operation is required to call the vehicle and the safety is impaired, and the accuracy is lowered because the vehicle position is moved only by the traveling distance.

In addition, it is impossible to reflect information added with a recent car navigation system, such as recommended route to a destination displayed on a map and dynamic traffic information, on a highway route map. was there.

The present invention solves the above-mentioned conventional problems and is excellent in that the vehicle position can be displayed comfortably and safely while traveling on a highway, and the guide route and dynamic traffic information can be displayed in an overlapping manner. It is an object of the present invention to provide a vehicle-mounted navigation device.

[0007]

In order to achieve the above object, the present invention provides a sensor for detecting the direction and distance of a vehicle, a map data storage means for storing road and map information, a sensor and a map data storage means. From the map data storage means, the vehicle position estimation means for estimating the current position of the vehicle using the road information of the vehicle, the display means for displaying the vehicle position on the map of the screen, and the map around the vehicle position of the vehicle position estimation means. Based on the map display means which is called and displayed on the display means together with the vehicle position and the vehicle position information estimated by the vehicle position estimation means, either map information or highway route map information is selected on the display means. A display switching means for displaying is provided.

Further, the present invention is such that the route and the position on the route are stored in advance in the route map corresponding data storage means, and the vehicle is superposed and displayed on the route map of the expressway.

The present invention also provides the route data storage means with an I
Various information for each C and the like is stored in advance and displayed on the route map of the expressway.

The present invention further comprises traffic information receiving means for receiving dynamic traffic information, and traffic information correspondence means for associating the traffic information with the road information in the map data storage means, and the dynamic traffic information is added to the route map. Are displayed in a superimposed manner.

The present invention further comprises a route guide means for obtaining a recommended route from the present location to the destination, and a route correspondence means for associating the road information and the route information of the map data storage means with each other, and the route information in the route map. It is designed to be displayed in an overlapping manner.

[0012]

Therefore, according to the present invention, the route map of the highway is automatically switched when the vehicle is traveling on the highway, and the map display is automatically returned when the vehicle departs from the highway. It has an effect that the route map of the highway can be displayed with a safe and comfortable response.

Further, according to the present invention, the position on the road is stored in advance in the route map correspondence data storage means, and the vehicle is displayed on the route map of the expressway in an overlapping manner so that the accurate vehicle position on the expressway can be obtained. Has the advantage that it can be easily confirmed.

The present invention also includes an IC in the route data storage means.
By storing various kinds of information in advance and displaying them on the route map of the expressway, there is an advantage that the IC or the like in the traveling direction of the vehicle can be easily confirmed.

The present invention further comprises traffic information receiving means for receiving dynamic traffic information and traffic information handling means for associating the traffic information with the road information in the map data storage means, and the dynamic traffic information is added to the route map. By overlapping and displaying, the traffic situation in the traveling direction can be understood at a glance, and there is an advantage that it can assist the user in planning and modifying the travel plan.

The present invention further comprises a route guide means for obtaining a recommended route from the current location to the destination, and a route correspondence means for associating the road information and the route information of the map data storage means with each other, and the route information in the route map. By displaying them on top of each other,
It has the advantage of being able to guide to the destination.

[0017]

【Example】

(Embodiment 1) Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the configuration of the first embodiment of the present invention. In FIG. 1, 101 is a direction sensor that measures the direction of the vehicle. A speed sensor 102 measures the speed of the vehicle. Reference numeral 103 is a map data storage unit that stores road shapes, connection information, and map information. 104 is a direction sensor 101 and a velocity sensor 102
It is a vehicle position estimating means for estimating the current position of the vehicle from the traveling locus obtained from the above, the road shape of the map data storage means 103, and the connection status. 105 is a vehicle position estimating means 10
4 is a map display unit that acquires a peripheral map around the vehicle position from the map data storage unit 103 and displays the peripheral map and the vehicle position on the display unit 106. Reference numeral 106 is a display means such as a display. Reference numeral 107 is a route data storage unit that stores route map information of expressways. Reference numeral 108 denotes a route correspondence data storage unit that stores the correspondence between the road information of the map data storage unit 103 and the route data storage unit 107. Reference numeral 109 is a route map switching unit that exclusively selects either the map display unit 105 or the route map display unit 111 for the content displayed on the display unit 106 according to the operation input of the input unit 110 or the traveling road of the vehicle.
Reference numeral 110 is an input unit such as a touch panel. Reference numeral 111 denotes route map information from the route map switching unit 109 and route map information of a highway around the vehicle to the route data storage unit 107.
It is a route map display unit that is acquired from the display unit 106 and displayed on the display unit 106. Each of these means 107, 108, 109, 111
The display switching means 112 is configured by the above.

Next, in the first embodiment, the display switching operation when the vehicle travels on the expressway where the route map exists will be described with reference to the display screen example of FIG. 2 and the screen transition flow of FIG. To do. 2A shows a normal map display screen, and FIG. 2B shows an example of a route map display screen on a highway. 201 is a vehicle mark, 202 is a traveling locus, 20
3 is a highway, 204 is a highway name, 205 is an IC
SA / PA / JCT etc. road divergence / merging point (hereinafter referred to as IC
And so on. ), 206 is the direction name, 207 is SA
A symbol indicating the service information of the PA, 208 is a distance such as IC, 209 is a distance from the vehicle position to the next IC existing in the traveling direction of the vehicle (here, the distance to Ebina SA is shown), and 210 is usually. The display switch key between a map and the route map of a highway is shown.

First, when the vehicle is traveling on a road where there is no route map for the expressway, the vehicle position estimating means 104 obtains the vehicle position (steps 301 and 302), and the route switching means 109 corresponds to the vehicle position and the route map. It is judged from the data storage means 108 that there is no route map (step 303),
A map around the vehicle is displayed on the screen (step 304).
As the vehicle position information, the map data storage unit 103 manages roads as a set of a plurality of links (hereinafter referred to as road links) by assigning a unique number to each road link. The position on the road link is obtained, and the route map switching means 109 searches the route map corresponding data storage 108 using the road link number as a key to determine the existence of the route map. The route map corresponding data storage means 108 has a data structure shown in FIG.

As shown in FIG. 2 (a), the vehicle is a Yokohama IC
If you get on the Tomei Expressway from (step 30
3), the route map switching means 109 switches the control of the display means 106 to the route map display means 111 and displays the route map of the expressway shown in FIG. 2B (steps 306, 3).
07). At this time, since the user does not always request the route map, the display switching key 2 on the route map
By selecting 10, it is possible to return to the map display even for roads where route maps exist (steps 308 and 309). Also, by selecting the display switching key 210 again on the called map display, the route display is restored (step 31).
0, 311, 312). If the vehicle gets off the highway, the route map switching means 109 determines that the route map does not exist and automatically displays a map (steps 303, 3).
04, 305).

As described above, since the route map display of the expressway can be automatically called and deleted, unnecessary operations for the user can be reduced, and safety and operability can be improved.

Next, the detailed operation of the route map display of the expressway will be described using the flow of the route map display of FIG. 4, the structure of the road route data storage means of FIG. 6, and the example of storing the route map corresponding data of FIG. To do.

First, the route map switching means 109 retrieves route map information corresponding to the vehicle traveling road from the route map corresponding data storage means 108 (step 401). For example, consider the case where a vehicle enters the Tomei Expressway down line as shown in FIG. FIG. 7A shows a road link in the map data storage means 103 for the down line of the Tomei Expressway. 701 is a vehicle, 702 is a road link, 703 is an end point node of the road link, 704 is a road link number, and 7 is a road link number.
Reference numeral 05 indicates an IC number or the like. Since the vehicle is traveling on the road link number n + 1, the corresponding record storing the information of the road link number n + 1 is detected from the route map correspondence data of FIG. 7B, and the highway number, forward IC number, etc. The rear IC number and the distance from the head of the road link to the front IC are extracted (step 402). The expressway number is assigned to each upper and lower line of each expressway, and the IC number is assigned to a unique number for each route.
In the example of (b), the highway number of the Tomei Expressway down line is 13, and the IC numbers of Yokohama IC and Ebina SA are 10 and 11, respectively. The road link number n
+ M + 1, n + m + 2, etc., the front IC etc. number and rear IC etc. number of the road link inside the IC etc. (road link in the entrance / exit section) shall store the IC etc. number to which the road link belongs. I try to know that the vehicle is located.

Next, the route map display means 111 acquires the above-mentioned route map information from the route map switching means 109, and first, from the highway number table of the route data storage means 107, the highway numbers that match the highway numbers. Search for records (step 403) and find an IC with the running highway
Find the beginning of the sequence of equality information records (step 40
4). The IC information record in the IC information table is
ICs / S that exist in the order of direction of travel of vehicles by expressway route
Since information such as A, PA and JCT is stored,
As shown in (b), information such as one rear IC and two front ICs
In order to display the equality information, the IC equality information record that matches the backward IC equality number is searched (step 405), and thereafter three IC equality information records are acquired to obtain the information necessary for display (steps 406-). 417), and the route map of the expressway is displayed (step 418).

As the display information, the highway name of the highway number record, the IC name of the information record such as IC, and S
A / PA service information, distance to front IC and I
Display the name of the connected expressway and the name of the direction in JCT that can be derived from records such as C. At this time, since the front face name and the rear face name are stored for each IC as shown in FIG. 6, two rear face names, such as ICs behind the vehicle, are stored in the rear face name. The front direction name such as front IC is adopted as the front direction name. In this way, the direction name is IC
An appropriate direction name is realized by storing the front direction name for each case. Further, in the data structure of FIG. 6, it is possible to store a plurality of direction names, and by displaying a plurality of direction names, the possibility that a place name known by the user can be displayed is improved, and it is easier to understand. It can be the direction name.

Next, the distance to the front IC of the route map corresponding data and the accurate distance from the vehicle position on the road link to the front IC etc. are obtained (step 419), and the distance and the rear IC of the route map are correspondingly obtained. Block and front IC
The vehicle is displayed on the line connecting (step 420). As a vehicle display method, as shown in FIG.
Until the front / rear IC changes, the vehicle may be always displayed in the center of the IC, etc., or the distance between the front / rear IC, etc. and the distance to the front IC may be calculated, and then the degree of arrival at the IC You may move little by little on the line between IC etc. by. The vehicle is the road link number n + m + 1, n in FIG.
When traveling in an IC such as + m + 2, the IC or the like to be displayed on the screen is not advanced and only the vehicle is moved to and displayed in the block of the IC or the like (Ebina SA in FIG. 2).
If you pass a road link such as C, the screen display will change to the next IC
And so on.

In the first embodiment, by providing another means corresponding to the road information of the map data storage means 103, other information can be displayed in a superimposed manner on the route map of the expressway. Examples thereof will be shown in the following second and third embodiments.

(Embodiment 2) FIG. 8 shows the configuration of the second embodiment of the present invention. In the configuration of Embodiment 1, the dynamic traffic for receiving the dynamic traffic information broadcast in the infrastructure is added. The information receiving means 801 and the traffic information handling means 802 for converting the information of the dynamic traffic information receiving means 801 into the data corresponding to the road information of the map data storage means 103 are added.

The operation is almost the same as that of the first embodiment, and the information of the traffic information handling means 802 is overlapped and displayed on the map display and the route map display. Figure 9 is an example of a display screen of a highway route map with dynamic traffic information superimposed on it.
901 indicates a traffic jam. Note that the vehicle display in this case is a method of moving on the line between the ICs and the like, which has already been described in the first embodiment, at a ratio of the remaining distance, and the relative position between the traffic information position and the vehicle position on the route map is not destroyed. To do so.

(Third Embodiment) FIG. 10 shows the configuration of a third embodiment of the present invention. In the configuration of the first embodiment, a route for setting a destination and a recommended route from the present location to the destination are obtained. A guide unit 1001 and a route correspondence unit 1002 for converting the route selected by the route guide unit 1001 into the road information of the map data storage unit 103 are added. The operation is almost the same as that of the first embodiment, and is set by the path guide means.
The result obtained by converting the searched route by the route correspondence means 1002 is displayed in an overlapping manner on the map display and the road route map display. FIG. 11 shows an example of a display screen of a highway route map in which routes are overlapped and displayed, and 1101 indicates routes.

[0031]

As is apparent from the above-described embodiment, the present invention provides a sensor for detecting the azimuth and distance of a vehicle, a map data storage means for storing road and map information, and a road for the sensor and the map data storage means. Using the information, the vehicle position estimation means for estimating the current position of the vehicle, the display means for displaying the vehicle position on the map on the screen, and the map around the vehicle position of the vehicle position estimation means are called from the map data storage means. Based on the map display means displayed on the display means together with the vehicle position and the vehicle position information estimated by the vehicle position estimation means, either the map information or the highway route map information is selected and displayed on the display means. With display switching means, it automatically switches to the route map of the highway when driving on the highway, and automatically returns to the map display when leaving the highway, It has the effect that it is possible to display a route map highway sloppy operation without safe and comfortable response.

In the present invention, the position on the road is stored in advance in the route map corresponding data storage means, and the vehicle is overlaid on the route map of the highway to display the accurate vehicle position on the highway. It has an advantage that it can be easily confirmed.

The present invention also includes an IC in the route data storage means.
By storing various kinds of information in advance and displaying them on the route map of the expressway, there is an advantage that the IC or the like in the traveling direction of the vehicle can be easily confirmed.

The present invention further comprises traffic information receiving means for receiving dynamic traffic information and traffic information correspondence means for associating the traffic information with the road information in the map data storage means, and the dynamic traffic information is added to the route map. By overlapping and displaying, the traffic situation in the traveling direction can be understood at a glance, and there is an advantage that it can assist the user in planning and modifying the travel plan.

The present invention further comprises a route guide means for obtaining a recommended route from the present location to the destination, and a route correspondence means for associating the road information and the route information of the map data storage means with each other, and the route information in the route map. By displaying them on top of each other,
It has the advantage of being able to guide to the destination.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a vehicle-mounted navigation device according to a first embodiment of the present invention.

2A is a screen diagram showing a display example of a map display in the first embodiment. FIG. 2B is a screen diagram showing a route map display example of a highway in the first embodiment.

FIG. 3 is a flowchart showing a switching operation of display screens in the first embodiment.

FIG. 4 is a flowchart showing a display operation of a highway route map in the first embodiment.

FIG. 5 is a schematic diagram showing a data structure example of a route map corresponding data storage means in the first embodiment.

FIG. 6 is a schematic diagram showing a data structure example of route data storage means in the first embodiment.

7A is a schematic diagram showing a road link of the Tomei Expressway in the first embodiment. FIG. 7B is a schematic diagram showing an example of data contents of the route map corresponding data in the first embodiment.

FIG. 8 is a block diagram showing the configuration of a vehicle-mounted navigation device according to a second embodiment of the present invention.

FIG. 9 is a schematic diagram showing a route map display example of a highway in the second embodiment.

FIG. 10 is a block diagram showing the configuration of a vehicle-mounted navigation device according to a third embodiment of the present invention.

FIG. 11 is a schematic diagram showing an example of displaying a route map of an expressway in the third embodiment.

[Explanation of symbols]

 101 Direction Sensor 102 Speed Sensor 103 Map Data Storage Means 104 Vehicle Position Estimating Means 105 Map Display Means 106 Display Means 107 Route Data Storage Means 108 Route Map Corresponding Data Storage 109 109 Route Map Switching Means 110 Input Means 111 Route Map Display Means 112 Display Switching means 201 Vehicle 202 Running locus 203 Highway 204 Highway name 205 IC name 206 Name of area 207 SA / PA service information 208 Distance between ICs 209 Distance to next IC 210 210 Display switch key 701 Vehicle 702 Road Link 703 Road node end node 704 Road link number 705 IC number 801 Dynamic traffic information receiving means 802 Traffic information handling means 1001 Path guidance means 1002 Path handling means

Claims (12)

[Claims] 1. A sensor for detecting an azimuth and a distance of a vehicle, a map data storage means for storing road and geographical information, and a road position information of the sensor and the map data storage means for estimating a current position of the vehicle. Vehicle position estimating means, display means for displaying the vehicle position on the map on the screen, and a map around the vehicle position of the vehicle position estimating means is called from the map data storage means and displayed on the display means together with the vehicle position. A map display means and a display switching means for selecting and displaying either map information or expressway route map information on the display means based on the vehicle position information estimated by the vehicle position estimation means. In-vehicle navigation device. 2. The display switching means includes: route data storage means for storing route information of expressways; and route map display means for extracting route information from the route data storage means and displaying a route map on the display means. , A route map corresponding data storage unit that stores the road information of the map data storage unit and the correspondence information between the route data storage unit and the route map corresponding to the traveling road by referring to the route map corresponding data storage unit. Whether or not it exists, if the route map exists, the control of the display means is switched to the route map display means, and if the vehicle moves to a road where the route map does not exist, the control of the display means is displayed again on the map. The vehicle-mounted navigation device according to claim 1, further comprising: route map switching means for switching to means. 3. The vehicle according to claim 2, wherein the route map corresponding data storage means stores the road and the position on the route in advance, and the vehicle is overlaid and displayed on the route map of the expressway. Navigation device. 4. The route map data storage means stores in advance the names of road diversion / merging points including interchanges, service areas, parking areas, and junctions for each expressway route, and connection information. 4. The vehicle-mounted navigation device according to claim 3, wherein road diversion / merging point information is displayed together with the drawing. 5. The route data storage means stores in advance the direction names of the vehicle traveling direction and the reverse direction names for each road branch / merge point, and the direction names are superimposed and displayed on the route map of the expressway. The vehicle-mounted navigation device according to claim 4. 6. Service information such as a service area, a rest area of a parking area, a cafeteria, a gas station, and the like are stored in advance in the route data storage means, and the service information is overlaid and displayed on the service area and the parking area. The vehicle-mounted navigation device according to claim 4, wherein 7. The route data storage means stores in advance a name of a connecting expressway of a junction, and the connecting road name is displayed at the junction.
The vehicle-mounted navigation device described. 8. The on-vehicle device according to claim 4, wherein the route data storage means stores the distance between the road diverging / merging points in advance and the distance is superimposed and displayed on the route map of the expressway. Navigation device. 9. The vehicle-mounted system according to claim 3, wherein the route map display means is provided with a process for displaying a distance to the next road branch / merging point and displays the distance to the road branch / merging point. Navigation device. 10. A route map overlapping display means for holding information other than the route map corresponding to the road information in the map data storage means is provided, and the information is displayed by being superimposed on the route map. The in-vehicle navigation device described in 3. 11. The route map overlay display means includes traffic information receiving means for receiving dynamic traffic information, and traffic information handling means for associating the traffic information with the road information in the map data storage means. 11. The vehicle-mounted navigation device according to claim 10, wherein the dynamic traffic information is displayed in an overlapping manner. 12. The route map overlapping display means includes a route guide means for obtaining a recommended route from the present location to the destination, and a route correspondence means for associating the road information and the route information of the map data storage means with each other. The vehicle-mounted navigation device according to claim 10, wherein the route information is displayed in a superimposed manner.