JP3394565B2 - Mobile navigation system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device for a moving body such as a vehicle, and more particularly to a technique for notifying a driver of traffic regulation information and the like.

[0002]

2. Description of the Related Art Generally, a navigation device mounted on a moving body such as an automobile measures the current position of the moving body and outputs the measured current position in association with previously stored map information. Specifically, the current position is marked on a map of a predetermined range including the measured current position and displayed on the display device.

Further, not only is the present position marked on a map and displayed on a display device, but it is also disclosed in JP-A-1-136299.
As described in Japanese Utility Model Publication No. Sho-38-38511,
A technology for displaying traffic regulation information together is known.

According to the techniques disclosed in Japanese Patent Application Laid-Open No. 1-136299 and Japanese Utility Model Laid-Open No. 64-38511, the traffic control information is also stored in the map information in advance and immediately after the traveling direction of the current position. The traffic regulation information of the existing intersection is displayed on the display device together with an alarm sound before the vehicle approaches the intersection. Alternatively, the traffic map information of all intersections included in the displayed map is also displayed on the display device.

[0005]

According to the technique of displaying the traffic map information of all the intersections included in the displayed map on the display device, too much information is displayed and There is a problem that people get confused. On the other hand, according to the technology that displays the traffic regulation information of the intersection immediately after the traveling direction of the current position on the display device together with the warning sound before the vehicle approaches the intersection, the driver is not confused. However, for example, if the driver plans a driving plan that is contrary to the traffic regulation immediately after, the driver who is notified of only the traffic regulation cannot immediately decide an alternative driving plan and is anxious. Will fall into.
That is, according to the technology of displaying the traffic regulation information of the intersection existing immediately after the traveling direction of the current position on the display device together with the warning sound before the vehicle approaches the intersection,
There is a problem that necessary information cannot be given to the driver when changing the operation plan.

[0006] Therefore, an object of the present invention is to provide a navigation device capable of notifying a driver of a minimum necessary information in determining a driving plan.

[0007]

[Means for Solving the Problems] To achieve the above object,
The present invention relates to a navigation device mounted on a moving body, which includes a present location determining unit that determines the current location of the moving body, a storage unit that stores road map information including traffic regulation information, a display unit, and a control unit. And a map including the current location determined by the current location determination unit on the display unit, based on the current location determined by the current location determination unit and the road map information stored in the storage unit, A means for displaying the current location on the map on the display unit, and means for identifying an immediate intersection which is an intersection that the mobile body will pass immediately after, based on the current location and the road map information. , Referring to the traffic regulation information stored in the storage unit for the specified immediate intersection, and determining whether the traffic regulation is enforced at the immediate intersection, and the traffic regulation is enforced at the immediate intersection. In case, Next to the rear intersection, based on the traffic regulation information stored in the storage unit for the next intersection, which is the intersection through which the mobile body will pass, and the traffic regulation information for the next intersection, the traffic intersection immediately after the intersection. There is provided a navigation device characterized by having means for displaying on the display unit a message indicating the content of traffic regulation at an intersection and the content of traffic regulation at the next intersection.

[0008]

According to the navigation device of the present invention, the control unit determines whether or not the traffic regulation is enforced at the intersection immediately after, and when the traffic regulation is enforced at the intersection immediately after, Next to the intersection, the next intersection, which is the intersection through which the mobile body will pass, is identified, and the traffic regulation information stored in the storage unit for the identified next intersection and the traffic regulation for the next intersection. Based on the information, a message is displayed on the display section to inform the contents of the traffic regulation at the next intersection and the contents of the traffic regulation at the next intersection.

Therefore, even if, for example, the driver plans a driving plan that is contrary to the traffic regulation immediately after,
You can immediately make an alternative operation plan.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the navigation device according to the present invention will be described below.

FIG. 1 shows the configuration of the navigation system according to this embodiment.

In the figure, reference numeral 1 is a map data storage device for storing map information together with road attribute information. Here, the attribute information includes traffic regulation information, maximum speed limit information, road width information, lane information, accident rate information at road intersections, information as to whether or not the road is a school zone, and the like. 2 is a vehicle current position determining means for estimating the current position of the vehicle based on the measured value of the geomagnetic sensor or the vibration gyro or the radio wave from the satellite, 6 is a display device such as a CRT device or LCD device, and 5 is a display device. It is a display control means for controlling. 3 is
The current position estimated by the vehicle current position determining unit 2 or the position corrected by using the map information is determined as the current position by referring to the map information in the map data storage unit 1, and a predetermined range including the determined current position is determined. The control unit 31 controls the display control means 5 so that the current position is marked on the map and displayed on the display device 6, and 31 is a guidance control means.

The characteristic operation of the navigation system according to this embodiment will be described below.

The guidance control means 31 is activated during the processing of the control means 3 for displaying the map and the current position, and performs the traffic regulation announcement processing 200 shown in FIG.

That is, first, an intersection passing immediately after is specified from the determined present position, the traveling direction, and the map information read from the map data storage device 1 (step 20).
1). The traveling direction is determined from the traveling history up to the present. Next, the traffic regulation information on the specified intersection is read (step 202), and it is judged whether or not there is the traffic regulation for the intersection (step 203). If there is no traffic regulation at the intersection just after that, the process proceeds to step 207.

On the other hand, when there is a traffic regulation, the next existing intersection in the traveling direction of the next intersection is specified (step 204), and the traffic restriction information on the specified next intersection is read from the map data storage device 1. Dashi (step 205). Then, a message that conveys the traffic regulation content immediately after and at the next intersection is created and displayed on the display device 6 via the display control device 5 (step 206), and the process proceeds to step 207. This display is performed, for example, as shown in FIG. In FIG. 3, right turn is restricted at the intersection 300 immediately after, but a message indicating that right turn is possible at the next intersection 301 is displayed together with the map and the arrow indicating the current position.

In step 207, the road following the intersection immediately after in the traveling direction is specified. Then, the lane information about the specified road is read from the map data storage means 1 in step 209, and it is determined whether or not the number of lanes in the traveling direction is smaller than that of the road currently located (step 209). If the number of lanes has decreased, a message for informing the content of the change of the number of lanes for the specified road is created and displayed on the display device 6 via the display control device 5, and the processing ends at step 210.

In the above embodiments, the display device 6 notifies the driver of traffic restrictions and changes in lane lending. However, instead of this display, or in addition to the display, a voice notification is given. May be performed.

In this case, as shown in FIG.
Voice output means 9 such as mosquito, voice control means 8 for controlling the output of voice to the voice output means 9 under the control of the control unit 3, voice for storing voice data for generating voice output as a message The data storage device 7 is further provided in the navigation device. Then, in step 206 and step 210 of FIG. 2, necessary voice data is read from the voice storage device 7, and the voice output means 9 via the voice control means 8 notifies the voice of the message. .

As described above, according to the present embodiment, when there is a traffic regulation at an intersection immediately after, the driver announces the information about the next intersection together with the content of the traffic regulation. Even if the driver plans a driving plan that is contrary to the traffic regulation immediately after, a driving plan as an alternative can be immediately decided. In addition, since information about the road after passing the intersection can be known in advance before passing through the intersection, it is possible to safely and efficiently drive before and after the intersection in consideration of the situation of the road after passing the intersection. .

By the way, in the above embodiment, the information about the intersection and the road after passing the intersection just after is displayed or announced by voice. In addition to this, referring to the map data storage device 1, the current position is marked. -If you are in the zone and give a notice of the message "Caution for schoolchildren to jump out" or pass through roads and intersections with a high accident rate,
It may be possible to announce the message “Accidents are frequent. Please be careful.” Also, the speedometer information is input to the control unit 3, and if the current traveling speed exceeds the maximum speed limit, the message "The speed limit is exceeded. Please reduce the speed." You may make it announce. In addition, the information of the fuel gauge may be input to the control unit 3, and when the fuel is low, the position of a nearby gas station may be notified.

Further, regarding the intersection immediately after, the contents of the traffic regulation may not be announced, but the precautions when crossing the intersection may be notified.

FIG. 5 shows the procedure of the intersection crossing announcement process 400 of the guidance control means 31 for notifying the caution when crossing the intersection.

In this case, when the guidance control means 31 is started during the processing of the control means 3 for displaying the map and the current position, first, the determined current position, traveling direction and the map data storage device 1 are read. From the map information,
The next intersection is specified (step 401), the road currently passing is specified (step 402), and the road intersecting the passing road specified at the specified intersection is specified (step 403).

Next, the road width information of the intersecting road specified in step 403 is read from the map data storage device 1 and it is determined whether the road width is less than 5.5 M (meter) (step 404). ) If it is less than 5.5M, it is a messe-
The message "Caution for pedestrian jumping out" is announced by the voice output from the voice output device 9 or the display on the display device 6 (step 405), and the process is terminated.

On the other hand, when the road width of the intersecting road is 5.5 M or more, it is judged whether or not the road width of the specified passing road is less than 5.5 M (step 40).
6) If it is 5.5M or more, the processing is terminated, and if it is less than 5.5M, a message "Please stop." Is announced by voice on the voice output device 9 or by a display on the display device 6. Then (step 407), the process ends.

As a result, as shown in FIG. 6a, when the road crossing at the intersection is narrow, a message "Be careful of pedestrians jumping out" is announced, and as shown in FIG. 6b, the road crossing at the intersection passes. If it is wider than the inside road, the message "Please stop." Is announced.

[0028]

As described above, according to the present invention, it is possible to provide a navigation device capable of notifying a driver of the minimum necessary information in determining a driving plan.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a navigation device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing the processing procedure of the guidance control means.

FIG. 3 is an explanatory diagram showing how a traffic regulation is announced.

FIG. 4 is a block diagram showing a second configuration of the navigation device according to the embodiment of the present invention.

FIG. 5 is a flowchart showing a second processing procedure of the guidance control means.

FIG. 6 is an explanatory diagram showing how to notify a caution when passing an intersection.

[Explanation of symbols]

1 Map data storage 2 Vehicle present location determination means 3 control unit 5 Display control device 6 Display device 7 Voice data storage device 8 Voice control means 9 Audio output means 31 guidance control means

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-81597 (JP, A) JP-A-3-150699 (JP, A) JP-A-5-80697 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) G08G 1/09 G01C 21/00 G08G 1/0969

Claims (2)

(57) [Claims] 1. A navigation device mounted on a mobile body, comprising a current location determining section for determining the current location of the mobile body, a storage section for storing road map information including traffic regulation information, a display section, and a control. The control unit stores the current location determined by the current location determination unit and the storage unit.
The current road map information based on the displayed road map information.
A map including the current location determined by the location determination unit and the map
Means for displaying the current location of the vehicle on the display unit, and the movement based on the current location and the road map information.
At the intersection just after which the body will pass immediately
Means for identifying and the intersection immediately after identified are stored in the storage unit.
Please refer to the traffic regulation information provided and
If the traffic control is enforced at the intersection just after the judgment means to determine whether the regulation is enforced,
Regarding the direction in which the moving body goes straight, next to the intersection just after the above
The next intersection, which is an existing intersection, is specified and stored in the storage unit.
Stored traffic regulations for the specified next intersection
Traffic information and traffic regulation information about the intersection just after
Based on the content of traffic regulation at the intersection just after the
The table above shows the message that informs you of the contents of traffic regulation at the difference
A means for displaying on the indicating section, and a navigation system characterized by comprising:
Equipment . 2. A traffic regulation information table for a navigation device for a mobile body.
A method for indicating a current position of a moving body , the method being based on the determined current position and the stored road map information.
And a map including the current location and the current location on the map.
Is displayed on the display device, and the movement is performed based on the current location and the road map information.
At the intersection just after which the body will pass immediately
Identified, the traffic regulations intersection immediately after the specified into force
If the moving body is moving straight ahead of the next intersection,
The next intersection that is an intersection existing in
About traffic regulation information about points and the intersection just after
Based on the traffic regulation information of
Notify the contents of traffic control and the contents of traffic regulation at the next intersection
The feature is that the message is displayed on the display section.
How to display traffic regulation information to be collected .