JP2783139B2 - Travel position display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a travel position display device (navigation device) provided with display means for displaying the current position of a moving vehicle such as an automobile together with a map or a highway deformation map.

[0002]

2. Description of the Related Art In a conventional traveling position display device, a liquid crystal display constituting a display portion of the traveling position display device displays an expressway deformed map, as well as an interchange name and a road name.

FIG. 9 shows a display example of a conventional liquid crystal display. As is apparent from FIG.
On the liquid crystal display 6A, in addition to the road name, an interchange name, a parking area name, and a service area name corresponding to an expressway deformed map are displayed in the actual arrangement order for each route. No car position is displayed.

[0004]

As described above, in the conventional traveling position display device, the vehicle position cannot be displayed even if the highway deformation map can be displayed. As a result, it is not possible to provide the driver on the highway with the current position information of the vehicle on the highway, as well as the distance to the next interchange, service area, parking area, section distance, etc. There was a problem that information of the information could not be given.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and provides a driver traveling on a highway with a vehicle position on a highway deformed map and a next interchange service area / parking area. It is an object of the present invention to provide a travel position display device that can effectively provide highway travel information such as distance and section distance.

[0006]

In order to achieve the above object, the present invention provides a vehicle position detecting means for detecting a vehicle position, and a set of nodes representing coordinate points and links connecting the nodes. Map data storage means for storing road information and expressway route information corresponding to the road information; correspondence between the map read from the map data storage means and the vehicle position detected by the vehicle position detection means; The highway is displayed as a route map by associating the display function for displaying the information and the highway route information read from the map data storage means with the own vehicle position detected by the own vehicle position detection means. A display unit having a display function of displaying a vehicle position on the route map.

Further, according to the present invention, the display means displays a map near the interchange by selecting an arbitrary interchange from the highway deformed map.

Further, according to the present invention, by selecting an arbitrary service area and parking area from the highway deformed map, the display means can display a service area,
It is configured to display the facility information of the parking area.

[0009]

According to the present invention, an expressway route map in which the expressway map and the position of the own vehicle and the expressway route information and the position of the own vehicle are associated can be displayed on the display means. , And the distance to the next interchange service area / parking area, section distance, etc., can be provided while traveling on the highway.

Further, in the present invention, the position of the interchange and the facility information of the service area / parking area are added to the expressway route information so that the information can be displayed on the display means.
The facility information of the service area / parking area can be provided to the driver while driving on the highway.

[0011]

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

FIG. 1 is a block diagram showing the overall configuration of a traveling position display device according to one embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes an azimuth sensor, which includes a geomagnetic sensor for detecting an absolute running azimuth of an automobile and an optical gyro for detecting a relative running azimuth of the automobile. 2 is a distance sensor that generates a pulse according to the number of rotations of the wheel, and 3 is a GPS (Global Pod).
positioning system) receiver,
The GPS receiver 3 obtains the position (latitude, longitude) of the receiving point by receiving and calculating radio waves transmitted from a plurality of satellites. Reference numeral 4 denotes a CD-ROM player. The CD-ROM player 4 reads map data from a CD-ROM 5 in which map data, highway route information, and the like are recorded.

Reference numeral 6 denotes a display / operation unit installed in the vehicle interior. The display / operation unit 6 includes a liquid crystal display 6A for displaying a map, a current running position, a direction, and the like of the automobile, and a front surface of the liquid crystal display 6A. , And a touch panel 6B provided on the display panel.
A switch for instructing a reduction, a switch for instructing a route search, a switch for selecting a destination from the place names displayed on the liquid crystal display 6A, a switch for displaying an expressway deformed map, and the like are provided. Reference numeral 7 denotes an apparatus main body, which is installed in a trunk room or the like.

Next, the configuration of the apparatus main body 7 will be described. 8 is a CPU (central processing unit) for performing various calculations, 9
Is a ROM (Read Only Memory) in which programs for various calculations performed by the CPU 8 are stored. 10 is data from the azimuth sensor 1, the distance sensor 2, the GPS receiver 3, the CD-ROM player 4, the calculation results of the CPU 8, and the like. (Random access memory), 11 is a ROM in which patterns such as characters and symbols to be displayed on the liquid crystal display 6A are stored, 12 is a communication interface that performs data transmission between the CPU 8, the CD-ROM 4, and the GPS receiver 3. An image processor 13 converts map data, current position data, and the like stored in the RAM 10 into image data to be displayed on the liquid crystal display 6A. The image data converted by the image processor 13 is stored in the image memory 14. The image data read from the image memory 14 is stored in the RGB converter 1
5 and converted to RGB signals and transmitted to the liquid crystal display 6A, thereby displaying a map, the current position of the automobile, and the like.

In FIG. 1, the output of the azimuth sensor 1 and the detection signal of the distance sensor 2 are sent to a CPU 8 through a sensor signal processing unit 16, and the CPU 8 calculates the current position of the own vehicle, thereby obtaining the current position of the own vehicle. Latitude and longitude are required. Further, the current position is corrected based on the data from the GPS receiver 3.

Based on the current position obtained in this way, map data in a predetermined range centered on the current position is stored on the CD-ROM.
The map data is read from the CD-ROM 5 by the ROM player 4 and the map data is transmitted to the communication interface 13 and the CP.
It is stored in the RAM 10 via U8. A part of the map data stored in the RAM 10 is read, converted into image data by the image processor 14, and written into the image memory 14. The image data read from the image memory 14 is sent to the liquid crystal display 6A through the RGB converter 15, and a map of a predetermined range centering on the current position is displayed. If the map data read from the RAM 10 includes character codes and symbol codes, patterns corresponding to these character codes and symbol codes are read from the ROM 11, and characters such as place names and the like are displayed on the liquid crystal display 6A together with the map. A symbol such as school is displayed. Further, the current position displayed on the liquid crystal display 6A is sequentially changed based on the traveling speed and traveling azimuth sequentially obtained as the vehicle travels.

Next, the operation of this embodiment will be described.
The map of the area where the car is running is displayed on the LCD 6
2, the map scale is selected by operating the map scale instruction switch on the touch panel 6B as shown in FIG. 2 (step S1), whereby the map data of the scale selected from the CD-ROM 5 is displayed. Is read into the CPU 8 through the CD-ROM player 4 and the communication interface 12 (step S2). Further, road network data is read from the CD-ROM 5 (step S3).

In the next step S4, based on the read road network data and the signals detected by the sensors 1, 2, the position and orientation of the own vehicle and the running road are determined by the CPU.
Calculate with 8. In the next step S5, it is determined from the calculated data whether or not the road on which the vehicle is currently traveling is an expressway. Here, as shown in FIG. 3, when it is determined that the position of the vehicle currently traveling is on the expressway, the process proceeds to step S6, and when it is determined that the vehicle is not on the expressway, the process proceeds to step S9.

In step S6, from the CD-ROM 5,
The highway road information such as the road name of the currently running highway, the name of the interchange service area / parking area before and after, and the section distance are read, and a switch for instructing the display of the highway deformed map is displayed on the liquid crystal display 6A. . Then, when a switch for presenting a highway deformed map display on the touch panel 6B displaying this is selected, a highway deformed map of the corresponding highway is drawn (step S7), and based on the own vehicle position and the road network data. The distance between the currently traveling section and the next interchange service area / parking area is detected, and the expressway vehicle mark is displayed on the expressway deformed map (step S8). FIG. 4 shows a display example of the expressway deformation map at this time.

On the other hand, when it is determined that the road on which the vehicle is currently traveling is not an expressway, the process proceeds to step S9, and a map of the currently traveling road is displayed on the CD-R as in the case shown in FIG.
Drawing is performed on the liquid crystal display 6A according to the map data read from the OM 5, and the own vehicle mark is displayed on the map (step S10).

Next, a description will be given of a case where a map near the interchange is displayed in the highway deformed map display.

In this case, as shown in FIG. 5, a switch for instructing an interchange display on the touch panel 6B displayed on the liquid crystal display 6A is selectively operated (step S21). Along with this, map information near the selected interchange is read out from the CD-ROM and read into the apparatus main body 7 (step S22), and this map information is output to the liquid crystal display 6A, so that the map near the relevant interchange is displayed on the liquid crystal display. 6A (step S23).

FIG. 7 shows an example of a map display near the interchange at this time. Next, a description will be given of a case where the service area / parking area information is displayed in the highway deformed map display.

In this case, as shown in FIG. 6, a switch for indicating a service area / parking area display on the touch panel 6B displayed on the liquid crystal display 6A is selected (step S31). Along with this CD
-The facility information of the selected service area / parking area is read out from the ROM and read into the apparatus main body 7 (step S32), and the facility information is output to the liquid crystal display 6A, whereby the facility information of the service area / parking area is obtained. The information is displayed on the liquid crystal display 6A (step S33).

FIG. 8 shows a display example of service area / parking area facility information at this time.

As described above, in this embodiment, the CD-
When it is determined from the road network data read from the ROM and the own vehicle position that the currently traveling road is an expressway, the interchange name before and after the name of the currently traveling expressway from the CD-ROM and The highway road information such as the section distance is read, and a highway deformed map corresponding to a simplified road map is displayed on the liquid crystal display, and the own vehicle mark is displayed on the deformed map. The overall correspondence between the vehicle and the expressway deformation map can be clarified, and the current position and the traveling direction of the own vehicle can be clarified for the driver traveling on the expressway, so that the sense of security and safety during traveling can be improved.

Further, by selectively displaying the map near the interchange and the facility information of the service area / parking area, it is possible to know in advance the local information near the interchange and the facility information of the area while driving on the highway. is there.

[0029]

As described above, according to the present invention, the vehicle position detecting means for detecting the position of the vehicle, a set of nodes representing coordinate points and links connecting the nodes, as is apparent from the above embodiment. Map data storage means for storing road information and expressway route information corresponding to the road information; and a map read from the map data storage means and a vehicle position detected by the vehicle position detection means. A highway is displayed as a route map by associating a display function to display in correspondence with the highway route information read from the map data storage means and the own vehicle position detected by the own vehicle position detection means. Display means having a display function of displaying the position of the own vehicle on the route map. Can effectively provide a highway information distance-interval distance, etc. change service areas parking area, it can be improved comfort and safety during driving.

Further, by selectively displaying the map near the interchange and the facility information of the service area / parking area, it is possible to know in advance that the local information near the interchange and the facility information of each area can be known while driving on the expressway. Have.

[Brief description of the drawings]

FIG. 1 is a block diagram of a traveling position display device showing one embodiment of the present invention.

FIG. 2 is a flowchart showing an operation procedure for displaying a highway deformed map in the present embodiment.

FIG. 3 is a diagram showing a display example of a map display during driving on a highway in the embodiment.

FIG. 4 is a diagram illustrating a display example of a high-speed forward path deformation diagram display according to the present embodiment.

FIG. 5 is a flowchart showing an operation procedure of displaying a map near an interchange in the embodiment.

FIG. 6 is a diagram showing a display example of a map display near an interchange in the embodiment.

FIG. 7 is a flowchart showing an operation procedure of displaying service area / parking area information in the embodiment.

FIG. 8 is a view showing a display example of a service area / parking area information display in the embodiment.

FIG. 9 is a diagram showing a display example of a conventional liquid crystal display.

[Explanation of symbols]

 Reference Signs List 1 direction sensor 2 distance sensor 3 GPS receiver 4 CD-ROM player 5 CD-ROM 6 display / operation unit 6A liquid crystal display 6B touch panel 7 device body 8 CPU 9 program ROM 10 RAM 11 ROM 12 communication interface 13 image processor 14 image memory 15 RGB converter 16 Sensor signal processor

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G08G 1/0969 G01C 21/00 G09B 29/10

Claims (2)

(57) [Claims] A vehicle position detecting means for detecting a vehicle position, road information and an expressway road corresponding to the road information.
Map data storage means for storing line information;
Based on the highway route information read from the data storage means
The expressway is displayed as a route map and the position of the vehicle
The vehicle position detected by the detection means is displayed on the above route map.
Display means, and the route displayed on the display means
A selection means for selecting an arbitrary interchange from the figure
Equipped, select a predetermined interchange with the selection means
By reading from the map data storage means.
Near the interchange selected based on the road information
A travel position display device for displaying a map of the travel position on the display means. 2. A vehicle position detecting means for detecting a vehicle position.
And expressway route information and expressway facility information are stored.
Storage means, and the high speed read from the storage means
Display highways as route maps based on road route information
Together with the vehicle position detected by the vehicle position detecting means.
A display means for displaying on the route map, and a display on the display means.
From the route map shown, select any service area,
And selecting means for selecting a working area.
Select predetermined service area and parking area by means
The facility information read from the storage means.
Service area, parking area selected based on the information
Displaying the facility information on the display means.
That running position display device.