JPH0636191A - Guiding device for route for vehicle - Google Patents

Abstract

PURPOSE:To provide a guiding device for route for vehicle which detects the road classification changed point from a general road to a toll road and performs the route guides to the toll road, etc., at a prescribed distance before this changed point. CONSTITUTION:In a map information recording part 10 recording map information, a road classification storage pant 10a storing the classification of each road such as the SHUTO (metropolis) expressway, expressways, toll roads, etc., is provided. A route guide control part 26 reads map information and route information including road classification information and detects a road classification changed point in a road classification changed point detection part 26a. When the route guide control part 26 approaches the road classification changing point up to a prescribed distance before this road classification changed point, the part 26 instructs a display part 28 and a voice control part 30 to perform a guide. The voice control part 30 performs the route guide by voice based on this instruction and notifies a driver of that he will enter a toll road, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle route guidance device for performing route guidance by voice.

[0002]

2. Description of the Related Art Various devices for reducing a driver's burden have been studied and are now mounted on a vehicle. Among them, a route for guiding along a route to a destination. There is an induction device. In addition, this route guidance device has a function of informing the driver of the route to be selected when passing through a branch point such as an intersection, and is displayed on the instrument panel of the vehicle as being practically used at present. There is a route guidance device that provides an image display device with a display and notifies the driver of the route.

Further, in addition to the notification by the image display as described above, there is also known a device for notifying the route by voice.
For example, Japanese Unexamined Patent Publication No. 62-267900 discloses a device for giving a voice instruction when a predetermined position before an intersection to be notified of a route is reached. According to such route guidance by voice, the driver does not need to look at the display or the like, and can concentrate on the front monitoring.

[0004]

However, according to the conventional route guidance device, the route guidance by voice is performed only at the intersection where the vehicle makes a right turn or a left turn. In some cases, voice route guidance is not provided. Toll roads, highways, motorways, and the like often do not have the above-mentioned intersections and are designed to enter by driving along the road. Therefore, when entering such a toll road, etc., route guidance is not provided, and there is a problem that the driver may be wondering whether to enter the toll road or expressway.

In particular, when route guidance is not provided, such as when a toll road entrance is provided in parallel with an ordinary road, it may be difficult to decide which road to go to.

The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide a route guidance device for a vehicle which notifies the entry of a toll road and provides route guidance.

[0007]

In order to achieve the above-mentioned object, a route guidance device for a vehicle according to the present invention detects a change in road type from a general road to a toll road, a highway or a motorway. Road type change point detection means,
And a route guidance unit that performs route guidance at a point a predetermined distance before the change point detected by the road type change point detection unit.

[0008]

The present invention has the above-described configuration, and can detect a change in road type from a general road to a toll road or an expressway and notify the driver of this. That is, it is possible to inform the driver whether or not to enter the toll road even on a toll road approaching road without a clear branch or intersection.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of this device. A map information storage unit 10 for storing information such as roads, place names, building names, river names, etc. is provided, and the stored map information can be read out as needed. In addition, a satellite navigation system (hereinafter GP) for measuring the current position of the vehicle.
GPS receiver 14 using S), a direction sensor 16 for detecting the traveling direction of the vehicle based on the geomagnetism,
Distance sensor 18 for detecting the traveling distance by the rotation speed of the wheels
Is provided, and the current position measuring unit 12 determines the current position of the host vehicle based on the detection results of these sensors.

In order to guide the route to the destination, first, the destination is designated by the input unit 19 on the screen of the display unit, which will be described later, or input by the place name or the like. Then, the route from the current position calculated by the current position measurement unit 12 to the destination is calculated by the route calculation unit 22 included in the calculation unit 20, and the calculated route is stored in the route storage unit 24.

After inputting the destination and determining the route, the actual route guidance is performed. The route guidance control unit 26 included in the above-described calculation unit 20 reads the map information around the own vehicle from the map information storage unit 10, and reads this together with the current own vehicle position / travel direction and the route stored in the route storage unit 24. The image is superimposed and displayed on the display unit 28.

The display unit 28 is provided in the instrument panel near the driver's seat, and the driver can see the display unit 28.
Check the location of your vehicle by looking at and get information about future routes. An example of this display is shown in FIG. The selected route in FIG. 2 is shown by a thick solid line 100, and the other roads are shown by a thin solid line 102. The position of the host vehicle is indicated by a circle 104, and the traveling direction is indicated by a wedge-shaped arrow 106. For road display,
It is possible to distinguish not only by the thickness of the line but also by changing the color.

An intersection 10 where the position of the own vehicle should be changed.
When approaching 8, the display screen changes as shown in FIG. 3, which is an enlarged map near the intersection, and the intersection name 110 and the distance 112 to the intersection are displayed. Further, the route guidance control unit 26 instructs the voice control unit 30 to generate a voice corresponding to the route guidance at the intersection at the same time as this display switching. The voice control unit 30 reads the information stored as digital data in the voice storage unit, converts the information into an analog signal, and drives the speaker 34. Then, a route guidance is given to the driver from the speaker 34 such as "Turn left at the next intersection." This voice instruction is given every predetermined distance until the vehicle passes the intersection.

Further, in the apparatus of this embodiment, the road type change points from the general road to the toll road, the expressway, the motorway, etc. are treated in the same manner as the intersection for which the course is changed, and the road type change points The route guidance to enter the toll road is given a predetermined distance in front, for example, 300 m in front.

That is, in the map information storage unit 10 of FIG. 1, a road type storage unit 10a that stores road types such as general roads, toll roads, expressways, and motorways for each road.
Is included. Then, the road type change point detection unit 26a changes the stored route from a general road to a toll road based on the route information stored in the route storage unit 24 and the map information stored in the road type storage unit 10a. Detect changes. When the route guidance control unit 26 detects that the road type change point is approaching, the route guidance to enter the toll road is performed. This route guidance is also displayed by the display unit 28 and voice guidance by the voice control unit 30 similarly to the route guidance at the intersection.

With regard to this guidance voice, it is desirable to announce the name of the toll road that is about to enter. For example, the guidance will be "Tomei Expressway. Please be careful." Further, instead of the toll road name, only the types such as “Shuto Expressway, Urban Expressway, Expressway, Toll Road, Motorway” may be provided.

By doing so, it is possible to prevent the driver from getting lost when entering a toll road or the like.
In particular, access roads to elevated roads that are elevated above ordinary roads, such as city-type motorways, are often provided in parallel with the ordinary roads. This can surely inform the driver. Further, the route guidance may be provided as described above even when changing from a toll road to a highway, for example, when getting on a highway from the Shuto Expressway.

[0018]

As described above, according to the present invention, by detecting a road type change point entering from a general road to a toll road, a highway or a motorway, and notifying the driver, It is possible to prevent the driver from getting lost as to whether or not they should enter a toll road. In particular, even when the toll road approach road and the general road are parallel to each other, there is no doubt as to which road to select.

[Brief description of drawings]

FIG. 1 is a configuration block diagram of a preferred embodiment according to the present invention.

FIG. 2 is a diagram showing a display example of the apparatus of this embodiment.

FIG. 3 is a diagram showing a display example of the device of the present embodiment, and is a diagram showing an example of enlarged display when approaching an intersection that makes a right turn or a left turn.

[Explanation of symbols]

 10 map information storage unit 10a road type storage unit 26 route guidance control unit 26a road type change point detection unit

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kyomi Morimoto 10 Takane, Fujii-cho, Anjo City, Aichi Prefecture Aisin AW Co., Ltd. (72) Shoji Yokoyama 10 Takane, Fujii-cho, Anjo City, Aichi Prefecture Aishi Inside AW Co., Ltd. (72) Inventor Kenji Kuroda 10 Takane, Fujii-cho, Anjo City, Aichi Prefecture AIN AW Co., Ltd.

Claims (1)

[Claims] 1. A route guidance device for a vehicle, which provides voice guidance at a predetermined point of a travel route and guides along a route to a destination, from a general road to a toll road, a highway or a motorway. A road type change point detecting means for detecting a change point of the road type, and a route guide means for performing a route guide at a point a predetermined distance before the change point detected by the road type change point detecting means. A route guidance device for a vehicle characterized by being provided.