JPH09178506A - Vehicle guidance system - Google Patents

Abstract

(57) [Summary] [Purpose] When displaying an image for navigation that guides the vehicle in accordance with the guide route set on the road map, the driver does not see anything from the front view. Make it possible to easily deal with the actual road ahead without distracting. [Structure] A vehicle driving guidance apparatus for guiding the driving guidance of a vehicle according to a guidance route preset on the map while obtaining the current position of the vehicle on a road map. The image of the simple road map related to the guide route in the front part from the current position is displayed on the head-up display.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle guide guidance device for displaying a guide route to a destination on a road map displayed on a screen to guide the vehicle.

[0002]

2. Description of the Related Art Conventionally, the current position of a vehicle is obtained on a road map, and the current position of the vehicle is updated and displayed on the road map displayed on the screen as the vehicle travels. A vehicle navigation guidance device that displays the guidance route from the starting point to the destination on the road map projected on the screen to guide the vehicle to reach the destination. Then, when the current position of the vehicle approaches an intersection or branch point on the guide route,
Arrows for guiding instructions such as left turn and straight ahead, and numbers showing the distance to the course change point such as right and left turns are displayed on the head-up display where the driver can see the image on the windshield of the vehicle. ing.

Conventionally, in a vehicle travel guidance system, an image of a road map at the current position of the vehicle is displayed.
A head-up display has been developed, along with an arrow that indicates the route at an intersection on the road map (Japanese Patent Laid-Open No. 61-200571).
Reference).

[0004]

The problem to be solved is to display an arrow for guiding instructions such as turning right or left together with the distance on the head-up display so that the road ahead is actually seen by the driver. Is difficult to deal with, and it is not possible to intuitively understand the point to turn right or left, especially when the road is complicated and complicated.

Therefore, in the case where the road ahead is complicated and complicated, in order to confirm the point corresponding to the arrow for guiding the right or left turn displayed on the head-up display, the center console portion or the like can be confirmed. It is necessary to look at the details of the navigation image displayed on the original display screen of the vehicle driving guidance apparatus installed in the vehicle.

Further, by displaying the image of the road map at the current position portion of the own vehicle on the head-up display together with the arrow indicating the route at the intersection on the road map, the image can be seen in the front view. There is a problem in that the images are overlapped and difficult to see, and in the case where the road map is complicated and complicated, the projected image becomes complicated and the visibility deteriorates.

[0007]

According to the present invention, when displaying an image for guiding a vehicle to guide a vehicle on a head-up display in a vehicle travel guidance system, the vehicle corresponds to a front road. In addition, it is possible to easily understand the points to turn right and left even if the road is complicated and complicated, and to prevent the driver's view from being obstructed. The simple road map related to the guide route in the front part from the current position is displayed on the head-up display.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of the structure of a vehicle travel guide device, which comprises a distance detector 1 for detecting the travel distance of a vehicle,
The direction detector 2 for detecting the traveling direction of the own vehicle, the GPS receiver 3 for measuring the position of the own vehicle, the traveling distance of the own vehicle detected by the distance detector 1, and the own vehicle detected by the direction detector 2. X from the starting point based on the direction of travel of the car
-The current position on the road map is calculated while accumulatively obtaining the position on the Y coordinate by arithmetic processing, and GP
The current position on the road map is calculated from the position information of the own vehicle measured by the S receiver 3, and the current position of the own vehicle on the road map is obtained complementarily, and overall control and necessary processing are performed. A control processing device 4 including a microcomputer for performing the above, and a map information storage medium 5 in which road map information based on digital map data is stored in advance.
And a storage medium reproducing device 6 for selectively reading out road map information of a necessary area from the storage medium 5, and displaying a predetermined road map on the screen based on the read road map information and displaying on the screen. A display device 7 for updating the current position of the vehicle on the projected road map as the vehicle travels, and an input command to the control processing device 4 to select and specify a map to be displayed on the display device 7. , And an operating device 8 capable of performing various input operations such as arbitrarily changing the setting of the display scale factor and arbitrarily setting the destination on the road map.

When the destination is set, the control processing device 4 also provides link cost data relating to the distance for each link on each road included in the road map information, required travel time, and prohibiting right / left turn. By using traffic regulation data such as traffic, a guide route that minimizes the link cost of a road that can pass from the starting point to the destination on the road map is searched. Then, after storing the data of the searched guide route in the internal memory, the guide route is displayed in a special color on the road map displayed on the screen.

As an algorithm for searching for a guide route that minimizes the cost of a road that can pass from a starting point to a destination, conventionally known algorithms are widely applied.

Further, the guide route from the starting point to the destination can be arbitrarily manually operated by inputting an operation from the operating device 8 by designating a cursor at each intersection or the like to be passed to the destination. It is also possible to set it.

The present invention relates to such a vehicle traveling guide device, and in particular, a head-up display 9 and its display control device 10 are provided so that the display control device 10 can move forward from the control processor 4 from the current position. Obtaining road map information and guidance route information in a predetermined rear of the part, and under the control of the display control device 10, a simple road map image (hereinafter referred to as a simple navigation image) relating to the guidance route of the front part from the current position is displayed. The image can be displayed on the windshield of the vehicle.

As the head-up display 9, for example, as shown in FIG. 2, a display 91 such as an LCD is used.
The image projected on the screen of the combiner 9 as a light-transmitting reflector provided on the windshield 11.
It is configured to be reflected by 2 so that the driver can see it as a virtual image toward the windshield 11 of the vehicle.

Instead of separately providing the combiner 92, an optical interference film may be formed on a part of the windshield 11 and the part may be used as a combiner. Further, the image may be directly reflected by the windshield 11 itself without using a combiner.

The simplified navigation image displayed on the head-up display 9 is, for example, as shown in FIG. 3, a guidance route GC within a predetermined area in the front part from the current position of the vehicle and each branch from the guidance route GC. It is created in the display control device 10 so that it becomes an image showing the connecting portion of the road.

Then, as shown in FIG. 3, the simple navigation image 13 is displayed on the windshield 11 in a state in which the driver can make a correspondence with the front road 12 actually seen. . The simple navigation image 13 is projected at a position such as a lower portion of the windshield 11 that does not hinder the driving field of view as much as possible.

Under the control of the display control device 10, the contents of the simple navigation image 13 are scrolled in the traveling direction as the current position of the vehicle advances along the guide route GC.

In the case shown in FIG. 3, a mark P indicating the current position and traveling direction of the vehicle is displayed at the bottom of the guide route GC.

Further, in the case shown in FIG. 4, in the display control device 10, the simple navigation image 13 shown in FIG.
The simple navigation image 13 ′ is projected on the windshield 11 as a bird's-eye view by rewriting the image information of 3 by the perspective projection process.

In this case, however, the simple navigation image 13 'projected on the windshield 11 is displayed.
The display state of is closer to the state where the driver is actually looking at the front road 12, and it becomes easier to correspond to the front road 12.

Although not shown in the figure, the map information storage medium 5 stores the map information in which the information of the road network and the information of the three-dimensional figure of the three-dimensional display elements such as the three-dimensional intersection, the target object and the topography are stored. Based on the read map information,
Under the control of the display control device 10, it is also possible to project a simple navigation image in which a grade separation on the guidance route GC and targets such as bridges and buildings along the guidance route GC are three-dimensionally represented. is there.

When the map information storage medium 5 is stored with the map information including the information of the road network and the information of the three-dimensional figure of the three-dimensional display elements such as the three-dimensional intersection, the target object and the terrain, the information is mixed together in advance. Make sure to store the created map information. Alternatively, the information of the road network and the information of the three-dimensional figure of the three-dimensional display element are positioned so as to be correlated with each other, separately created, separately stored in each dedicated storage unit, and associated with each other. The road network and the three-dimensional figure of the three-dimensional display element are overlapped and displayed on the screen based on the read information.

The display of the simple navigation image on the head-up display 9 is such that it is always displayed while the guidance for traveling the vehicle according to the guide route is provided, and an input instruction from the operation device 8 is given. According to the above, it is possible to arbitrarily display it as needed under the control of the control processing device 4.

In the control processing unit 4, the current position data and the guidance route data are compared and examined, so that the current position of the own vehicle is a predetermined distance before the course change point such as a right turn or a left turn on the guidance route. It is also possible to detect that the user has come to the shop and automatically display the simple navigation image on the head-up display 9 in response to the detection.

At this time, an input from the operation device 8 is performed so that the timing for displaying the simple navigation image can be optimally set according to the skill level of the driver when a predetermined distance before the course change point is reached. The predetermined distance can be variably set according to an instruction.

Alternatively, the control processing device 4 obtains data on the traveling speed of the vehicle from the output signal of the speed detector (not shown), and the predetermined distance is proportional to the traveling speed at that time. The control may be variably changed.

FIG. 5 shows another embodiment of the present invention.
Here, an obstacle detection device 14 that detects a distance or a relative speed to an obstacle ahead of the own vehicle by a radar is provided, and the control processing device 4 reads an output signal of the obstacle detection, and, for example, It is detected that the distance to the vehicle traveling ahead becomes shorter than a predetermined value set in advance or the relative speed becomes larger than a predetermined value, and at the time of detection, a simple navigation image by the head-up display 9 is displayed. The display is prohibited.

However, when the traveling state of the vehicle becomes dangerous due to a short distance between the vehicle and the vehicle traveling ahead or an increase in the relative speed to the vehicle traveling in front, the windshield can be used until then. The simple navigation image displayed on the side of 11 disappears, and the driver can pay attention to the driving operation without giving unnecessary information.

At this time, the distance or relative speed with respect to the obstacle is set in accordance with the input instruction from the operating device 8 so that the timing for erasing the simple navigation image can be optimally set according to the skill level of the driver. It is possible to variably set a predetermined value for.

Alternatively, the control processing unit 4 obtains data on the traveling speed of the vehicle from the output signal of the speed detector (not shown) and compares it with the distance or the relative speed according to the traveling speed at that time. The target predetermined value may be variably controlled. In that case, when the traveling speed of the host vehicle is fast, the predetermined value to be compared with the distance is set to be correspondingly large, and when the traveling speed of the host vehicle is fast, the target value is compared with the relative speed accordingly. The predetermined value is set to be small.

In the embodiment shown in FIG. 5, a momentum detecting device 15 for detecting the momentum of the vehicle such as the lateral angular velocity (yaw rate) acting on the vehicle as the vehicle travels and the acceleration in the traveling direction is provided. Then, the control processing device 4 reads the detection signal of the momentum of the vehicle, detects that the detected momentum of the vehicle becomes equal to or more than a predetermined value, and at the time of the detection, displays a simple navigation image by the head-up display 9. The display is prohibited.

However, a great yaw rate is detected when the vehicle is turning a sharp curve, which requires a great deal of attention to the driving of the vehicle, and a large yaw rate is generated when the vehicle is overtaking a vehicle ahead. When acceleration is detected, the simple navigation image projected on the windshield 11 disappears so that the driver can pay attention to the driving operation without giving unnecessary information. become.

[0033]

As described above, in the vehicle travel guidance system according to the present invention, when displaying the navigation image for guiding the travel guidance of the vehicle in accordance with the guidance route set on the road map. , The image of the simplified road map related to the guide route in the front part from the current position of the vehicle is displayed on the head-up display so that the driver can see the image on the windshield of the vehicle. It becomes possible for the driver to easily take the correspondence with the road ahead that he is actually seeing, without looking away from the front view.

Further, since the image displayed on the head-up display is a simplified road map relating to a simplified guide route, a sufficient driving field of view can be secured and unnecessary information is not visible. Therefore, even if the road ahead is complicated, it becomes possible to intuitively and instantly grasp the route change point such as a right turn or a left turn according to the guide route. It is possible to instantly understand the display contents for the guidance for driving guidance without staring at the image, and concentrate on driving the vehicle.

[Brief description of the drawings]

FIG. 1 is a block configuration diagram showing an embodiment of a vehicle running guidance apparatus according to the present invention.

FIG. 2 is a simplified configuration diagram showing an example of a head-up display in the embodiment.

FIG. 3 is a diagram showing an example of a simple navigation image projected on a windshield of a vehicle.

FIG. 4 is a diagram showing another example of the simple navigation image projected on the windshield of the vehicle.

FIG. 5 is a block diagram showing another embodiment of the vehicle travel guidance device according to the present invention.

[Explanation of symbols]

 1 distance detector 2 direction detector 3 GPS receiver 4 control processing device 5 map information storage medium 6 storage medium reproducing device 7 display device 8 operating device 9 head-up display 10 display control device 11 windshield 12 front roadway 13 simple navigation image 13 'Simple navigation image 14 Obstacle detection device 15 Momentum detection device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsuneo Takahashi 1-4-1, Chuo, Wako-shi, Saitama, Ltd. Honda R & D Co., Ltd.

Claims (9)

[Claims] 1. The present position of the own vehicle on the road map is obtained, and the present position of the own vehicle is updated and displayed on the road map displayed on the screen as the vehicle travels. From the current position of the vehicle in the vehicle navigation guidance device that displays the guidance route from the vehicle to the destination on the road map projected on the screen to guide the vehicle to reach the destination. A vehicular travel guidance device, wherein a simplified road map related to a guidance route in a front portion is displayed on a head-up display in which an image can be viewed toward a windshield of the vehicle. 2. The vehicle travel guidance system according to claim 1, wherein the present position of the vehicle is displayed on a simplified road map displayed on the head-up display. 3. A head-up display is provided with means for detecting that the current position of the vehicle has come a predetermined distance before a turning point such as a right turn or a left turn on the guide route. The vehicle guide guidance apparatus according to the above-mentioned item 1 or 2, wherein the device is automatically operated. 4. The vehicle according to claim 3, wherein the predetermined distance is variably set according to an input instruction or variably controlled according to a vehicle speed of the vehicle. Guide guidance device for cars. 5. A means for detecting a distance or a relative speed to an obstacle ahead of the host vehicle is provided, and when the distance to the obstacle ahead is below a predetermined value or when the relative speed is above a predetermined value. The vehicle running guidance apparatus according to the above-mentioned item 1, wherein the display on the head-up display is prohibited when it becomes. 6. The method according to claim 5, wherein the predetermined value is variably set according to an input instruction or variably controlled according to the vehicle speed of the host vehicle. Vehicle guidance system. 7. A means for detecting a momentum of the vehicle such as a yaw rate and an acceleration accompanying the traveling of the own vehicle is provided, and when the detected momentum of the vehicle exceeds a predetermined value, a display on the head-up display is performed. The vehicle running guidance apparatus according to the above-mentioned item 1, characterized in that it is prohibited. 8. The vehicle travel guidance device according to claim 1, wherein a simplified road map related to the guidance route is displayed as a bird's-eye view. 9. The vehicle guide guidance according to claim 1, wherein a simplified road map related to the guide route is displayed three-dimensionally, including a target object along the guide route. apparatus.