JPH0735564A - Route guidance information display method for navigation system - Google Patents

Abstract

PURPOSE:To automatically display travel information at a specific point on a travel route during a travel, regarding a navigation system of route guidance type. CONSTITUTION:Regarding a navigation system of route guidance type, display timing for travel information is determined during a travel on the basis of the position of a way point on a travel route (specific point set on a travel route) and a distance from the point to a current automobile position. Also, when a distance between the way point 1 and an automobile 2 approaching thereto becomes equal to or more than the prescribed distance, travel information is not shown on a screen 10. Furthermore, when the automobile 2 comes near the way point 1 and a distance from the automobile 2 to the point 1 is within the prescribed distance, travel information 3 is displayed on the screen 10. Also, when the automobile 2 passes and recognizes the way point 1, or leaves therefrom over the prescribed distance, the indication of the travel information 3 is stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation system, and more particularly to a navigation system for guiding a traveling route based on a predetermined passing point on a set course from a current position of a mobile body to a destination. Information display method.

[0002]

2. Description of the Related Art A navigation system for displaying a current position of a moving body such as a car on a map displayed on a display device to assist driving is based on radio waves (positional information) from an artificial satellite. GPS system to determine the position of the car,
A sign post method that recognizes the position of the vehicle based on the position information from a sign post installed on the side of the road, and a position that calculates and determines the position of the vehicle based on the distance and direction information from the distance and direction sensors. There is an autonomous traveling system, and there is also a mixed autonomous driving system.

Further, in the navigation system of the above-mentioned fully autonomous driving method or a mixed method of autonomous driving method, a certain course is selected in advance from an arbitrary route between the current position of the vehicle and the destination, and the planned traveling course is selected. Then, a specific point on the route (for example, an intersection, a T-shaped road, or a three-way road) is set, the coordinate values thereof are registered as course data, and the vehicle is actually driven along the planned traveling course. In this case, there is a route guidance system that displays the accurate position of the own vehicle by comparing the coordinate value of the registered specific point with the coordinate value calculated based on the direction data and the distance data obtained by autonomous driving. There is also.

On the other hand, while the vehicle is traveling under the control of the navigation system, in the usual case, the display device displays a map and at least a display mark indicating the position of the own vehicle. It is convenient for the driver to be able to display information such as mileage and average hourly speed. For such a purpose, there is a navigation device that calculates these traveling information and displays it on a part of the display screen.

[0005]

When displaying the travel information (route guidance information) on a part of the display screen with such a navigation device, the navigation device is installed in a vehicle. Since the size of the display screen is limited, the driver can temporarily display the driving information by pressing a button on the remote control device etc. while avoiding always displaying the driving information on the display screen so as not to interfere with the map display. Was to be displayed. If the traveling information can be automatically displayed at a required place during traveling instead of such a conventional traveling information display method, it is convenient because the driver does not need to press a button such as a switch or a remote controller.

The present invention has been made in view of the above demands, and in a navigation system having a route guidance system, route guidance information (travel information) can be automatically displayed at a specific point on a traveling route during traveling. The purpose of the present invention is to provide a method for displaying route guidance information of a navigation system configured as described above.

[0007]

In order to achieve the above object, a first invention is mounted on a mobile body, is capable of displaying map information on a display means, and is a way on a running course on the displayed map. Navigation that can set points
In the system, the distance between the moving body and the nearest waypoint in the traveling direction is calculated, and when the calculated distance is within a predetermined distance, the route guidance information is displayed on the map.

The second invention is the same as the first invention,
It is characterized in that the display of the route guidance information is stopped after a lapse of a predetermined time or distance when the moving body passes from the nearest waypoint.

A third aspect of the present invention includes a first storage unit mounted on a mobile body, which stores map information, and a second storage unit which stores course data including at least waypoint position information on a traveling course. A navigation device that includes an internal memory, a processing unit, and a display unit, and displays a map based on the map information together with the position marker of the mobile unit on the display unit, the travel route being provided while the mobile unit is traveling. Always calculates the distance between the waypoint and the moving body set in advance above, and when the moving body approaches the waypoint and the distance between the waypoint and the moving body is within a predetermined distance, route guidance information It is characterized by calculating a value and displaying route guidance information including the route guidance information value together with a map.

Furthermore, the fourth invention is the display system of the route guidance information of the navigation system according to the third invention, wherein the route guidance information includes at least distance information to a waypoint and information on the number of waypoints. And

[0011]

In the first aspect of the present invention, when the moving body approaches the nearest waypoint within a predetermined distance, the route guidance information is displayed on the map. The display of this information is stopped when a predetermined time or a predetermined distance has passed after passing the waypoint as in the second invention.

Further, the display system of the route guidance information of the navigation system of the third aspect of the present invention is as follows:
The distance between the waypoint and the moving body set in advance on the travel route is constantly calculated, and the distance between the moving body and the waypoint traveling toward the waypoint is the predetermined distance based on the calculated distance. When it is within the range, the route guidance information value is calculated, and the route guidance information including the route guidance information value is displayed together with the map.

A fourth aspect of the present invention is the method for displaying route guidance information of the navigation system according to the third aspect, wherein the moving body approaches the waypoint, and the distance between the waypoint and the moving body is within a predetermined distance. When it becomes, at least the distance to the waypoint and the number of waypoints are calculated and displayed together with the map.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view of a route guidance information display system of a navigation system according to the present invention. Figure 1
Although the vehicle (own vehicle) 2 traveling toward the waypoint 1 is shown in (a), since the distance between the waypoint 1 and the vehicle 2 is 400 m or more, for example, the vehicle 2 is displayed on the screen 10. The map around is displayed, but the driving information is not displayed. Next, when the car 2 approaches the waypoint 1 and the distance between the waypoint 1 and the car 2 is within 400 m,
As shown in (b), the travel information 3 is displayed on the left side of the screen 10. In FIG. 1B, the traveling information 3-1 is the distance to the waypoint being guided, the set WP number 3-2 is the total number of waypoints set on the traveling route from the starting point to the destination, and the remaining WP. Formula 3-3 shows the number of remaining waypoints obtained by subtracting the number of passed waypoints from the set WP number. Further, when the vehicle 2 recognizes that the vehicle passes the waypoint 1 or is separated from the waypoint 1 by 400 m or more, the display of the traveling information 3 is stopped, and the screen is changed to the original display of the map as shown in FIG. return.

In the embodiment, the distance between the waypoint 1 and the car 2, which is the reference for displaying the traveling information 3, is 400 m, but the distance is not limited to this, and may be 400 m or less or 400 m or more. The distance to the waypoint and the comparison distance between the passed waypoint and the car may be different. Also, the waypoint 1 to be the standard
The distance between the car 2 and the car 2 may be changed depending on the type of the car and the road conditions. Furthermore, the display position of the travel information 3 on the screen and the type of travel information to be displayed are not limited to the examples described above, and the travel information 3 may be displayed at a position that does not overlap the display of the main part of the map. The types of travel information may be less or more than those described above.

FIG. 2 is a block diagram showing a configuration of an embodiment of a navigation device to which the route guidance information display system of the navigation system of the present invention can be applied, and FIG. 3 shows a processing unit of the navigation device of FIG. It is a flow chart which shows operation. The present invention is a completely autonomous navigation device and a navigation device mixed with GPS, which sets the positions of a plurality of specific points (way points) on a travel route, and the position of the vehicle and its way points on a map during traveling. Can be applied to the navigation system of the guidance system that displays the and displays the route of the vehicle.

In FIG. 2, reference numeral 21 is a power source, 22 is an input device such as a remote controller, and 23 is an SRAM which is a non-volatile memory storing course data such as set way points.
And 24 corresponds to a second storage unit, and 24 is an internal memory for expanding map data, temporarily storing course data, and storing programs such as a course setting program, 25
Is a CPU that controls the execution of the entire navigation device and the navigation program, and 26 is a GPS that receives a position signal (radio wave) from the GPS and decodes it as position information.
A receiver (receiver), 27 is a direction sensor such as a gyro,
Reference numeral 28 is a distance sensor, 29 is a CD-ROM which stores map information and program means such as a navigation program and a course setting program, which corresponds to a first storage section, and 30 is a display section (display).

The operation of the navigation system of FIG. 2 in the route guidance information display system according to the present invention will be described below with reference to FIG. In the navigation device of FIG. 3, the power source 21 is O
When it becomes N, the navigation program and the course setting program are read from the CD-ROM 29 into the internal memory 24, and the navigation operation is started. The driver sets the destination using the input device 22.

[S1] GP obtained by the GPS receiver 26
The position information from S is obtained, and the vehicle position (latitude and longitude) is set based on it. The CPU 5 calculates the distance between the destination and the vehicle position to determine the scale, reads the map information including the vehicle position from the CD-ROM 29, and reads the map information from the internal memory 24.
Then, the map and the vehicle position coordinates are displayed on the display device.

[S2] On the other hand, in order to carry out autonomous traveling during traveling, the data from the azimuth sensor 27 and the distance sensor 2 are sampled at predetermined time intervals, converted into digital data and input to the CPU 5. The CPU 5 calculates the distance L between the current position of the vehicle and the next waypoint from the result of the navigation processing. In this case, the waypoint position (latitude, longitude) is SR in the format as shown in FIG.
It can be obtained from the course data stored in the AM 23. FIG. 4 shows an example of the set course data table. In FIG. 4, the course data table has absolute coordinate values (latitude / longitude) indicating the positions of the way points 1 to n and relative coordinates indicating the course direction at the way points. Value (latitude / longitude)
It is stored as a set of.

[S3] The display timing of the traveling information is determined based on the distance between the waypoint and the current position of the vehicle obtained in step S2. If the distance between the waypoint and the current position of the vehicle is within 400 m, step S4 and subsequent steps are executed, and if it is larger than 400 m, the process returns to step S1. [S4] If the currently displayed screen is a normal map (a screen that does not display driving information (see FIG. 1A)), then step S5 and subsequent steps are executed to display driving information. If so (see FIG. 1B), step S
Execute steps 7 and below. [S5] Display information values are calculated to calculate various display information values (distance to waypoint, total number of waypoints, remaining number of waypoints, average hourly speed, running distance, etc.). [S6] The traveling information is displayed on the displayed map (see FIG. 1B), and the process returns to step 1 to repeat the process.

[S7] It is determined whether or not the way point has been passed. If not, the process returns to step S1 and the process is repeated while displaying the traveling information. [S8] When the waypoint is passed, CPU5
Calculates the distance L'between the waypoint passed and the current position of the vehicle from the result of the navigation processing. [S9] The erasing timing for displaying the traveling information is determined based on the distance L'obtained in step S8. If the distance between the passed waypoint and the current position of the vehicle is within 400 m, the process returns to step S1 and the process is repeated while displaying the traveling information. [S10] When the distance L'is larger than 400 m, the superimposed display of the traveling information is stopped, the display is switched to the normal screen display, and the process is repeated at step S1.

In the present embodiment, the starting position of the vehicle is set in step S1 based on the position information from the GPS obtained by the GPS receiver 26. However, in the case of a completely autonomous navigation device which is not of the mixed type with GPS, The present location may be set by the input device 22.

In the present invention, the display information may be erased at a timing corresponding to the passage of time or distance after passing the nearest waypoint, or may be erased at both timing of time and distance. Good. For example, the above information may be deleted when the predetermined distance has not passed within the predetermined time. Further, when the information is erased, it is possible to read the immediately preceding information by some operation means of the device. In this case, it is possible to provide a storage means for temporarily storing the information when the information is erased by the method described above. In addition, a method of temporarily storing the information at the time of displaying may be adopted, or a method of storing information that sequentially passes may be adopted.

[0025]

As described above, according to the present invention, the traveling information is automatically calculated based on the distance to the waypoint on the traveling route without scanning the switches or buttons during traveling unlike the conventional method. Can be displayed as Therefore, unlike the conventional method, the driver does not forget to press the switch or button and forget the driving information that he / she needs, and the driver can pay attention to the timing of pressing the switch or button. Never. Further, since the traveling information is not automatically displayed after passing the waypoint and passing a certain distance, the traveling information displayed on the screen does not hinder navigation.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a display system of route guidance information of a navigation system according to the present invention.

FIG. 2 is a block diagram showing the configuration of an embodiment of a navigation device to which the route guidance information display system of the navigation system of the present invention can be applied.

3 is a processing unit (C in the navigation device of FIG. 2;
It is a flowchart which shows operation | movement of PU5).

FIG. 4 is an example of a course data table.

[Explanation of symbols]

 1 car position 2 waypoint 3 running information (route guidance information) 10 display screen 23 SRAM (second storage unit) 24 internal memory 25 CPU (processing unit) 27 direction sensor 28 distance sensor 29 CD-ROM (first Storage unit) 30 Display unit

Claims (4)

[Claims] 1. A navigation system mounted on a mobile body, capable of displaying map information on a display means, and capable of setting a waypoint on a displayed course on a displayed map, in which the mobile body and the traveling direction are set. If the distance between the most recent waypoints is calculated and the calculated distance is within the specified distance,
A method of displaying route guidance information of a navigation system, characterized by displaying route guidance information on the map. 2. The navigation system according to claim 1, wherein the display of the route guidance information is stopped after a lapse of a predetermined time or distance when a moving body passes from the nearest waypoint. Display method of route guidance information. 3. A first storage unit mounted on a mobile body, which stores map information, a second storage unit which stores course data including at least waypoint position information on a traveling course, and an internal memory, In a navigation device that has a processing unit and a display unit and displays a map based on the map information on the display unit together with a position marker of the moving body, while the moving body is traveling, it is preset on a traveling route. The distance between the waypoint and the moving body is constantly calculated, and the route guidance information value is calculated when the moving body approaches the waypoint and the distance between the waypoint and the moving body is within a predetermined distance. , A navigation characterized by displaying route guidance information including the route guidance information value together with a map.
Display method of system route guidance information. 4. The method for displaying route guidance information of the navigation system according to claim 1, wherein the route guidance information includes at least distance information to a waypoint and information on the number of waypoints. Display method of route guidance information.