JPH0636192A - Guiding device of route for vehicle - Google Patents

Abstract

PURPOSE:To make it possible to perform the route guiding with which the request of a driver agrees by detecting the entering a specific road whose entrances and exits are limited and performing a voice guide based on the entering of the specific road when a vehicle enters the specific road. CONSTITUTION:When the location of its own vehicle approaches a cross-point where a route should be changed, a display screen changes and displays the name of the cross-point and the distance to the cross-point. At the same time, a route guide control part 26 instructs a voice control part 30 to generate the voice corresponding to the route guiding at the cross-point. The voice control part 30 reads the information stored as digital data in a voice storage part 32, converts it into an analog signal and drives a speaker 34. By the speaker 34, the route guiding is performed by performing a route guide such as 'Turn to the left at the next cross-point'for a driver. Further, the entering of a specific road such as a toll road and an expressway is detected and the route guide according to this detection is performed. The judgment of the entering is performed by an entering detection part 26a of the route guide control part 26.

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 Laid-Open Patent Publication No. 62-267900 discloses a device for giving a voice instruction when a predetermined position before an intersection or a branch point to notify 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 above-described conventional route guidance device, the route guidance by voice is performed only at the route guidance at the intersections and branch points where the vehicle makes a right turn, a left turn, and the like. In the case of driving along a road, voice route guidance is not provided. In other words, when entering a specific road, such as a toll road or a highway, where the entrances and exits to that road are limited, route guidance is provided until the vehicle approaches the exit interchange because the number of intersections is small. There were times when I couldn't let it go. In such a case, the driver has a problem that he cannot know whether the road on which he is currently traveling is the correct route. There is also a demand for the driver to know the name of the interchange at the exit of the specific road.

The present invention has been made to solve the above-mentioned problems, and provides a route guidance device for a vehicle capable of providing suitable voice guidance when entering a specific road such as an expressway. The purpose is to

[0006]

In order to achieve the above-mentioned object, the vehicle route guiding apparatus according to the present invention is applied to a specific road such as a toll road or a highway in which entrances and exits to the road are limited. It has an input line detecting means for detecting that the line has entered, and a voice guide means for performing voice guidance based on the input line of the specific road when the specific line is entered by the input line detecting means.

[0007]

The present invention has the above-mentioned structure, and can detect the entry into a specific road and notify the driver of this. Further, the name of an interchange or the like to get off when entering a specific road can be voice-guided. Then, it is possible to perform route guidance that matches the driver's request.

[0008]

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. Road, place name, building name, river name,
A map information storage unit 10 for storing information such as the above is provided, and the stored map information can be read out as needed. In addition, a GPS receiver 14 that uses a satellite navigation system (hereinafter referred to as GPS) for measuring the current position of the vehicle, a direction sensor 16 that detects the traveling direction of the vehicle based on the geomagnetism, and the number of rotations of the wheels. Is provided with a distance sensor 18, and the current position measuring unit 12 determines the current position of the 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 is 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.

Intersection 10 at which the position of the own vehicle should change course
When approaching 8, the display screen changes as shown in FIG. 3, 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 present embodiment, it is detected that a particular road such as a toll road or an expressway has been entered, and route guidance is provided in accordance with this. The determination of the line entry is performed by the line entry detection unit 26a included in the route guidance control unit 26. That is, it is detected where the position of the vehicle detected by the current position measurement unit 12 is on the map / route stored in the map information storage unit 10 and the route storage unit 24, and the detected position is specified. It is determined whether or not it is on the road.

When a specific road entry is detected, if an interchange (or C interchange) exits from the specific road when the main line is entered from an interchange or ramp, "it is the route to exit at the C interchange." And route guidance will be given. If the exit is not an interchange and is a "ramp" or "exit", it will say "This is the route to exit at Exit C." When guided in this way, the driver can be sure that he or she has entered the specific road, and can confirm to which exit the specific road should be traveled.

Guidance for junctions / interchanges, etc., on a specific road whose speed limit exceeds 60 km / h starts 2 km before the point. Then, after passing an interchange, etc. just before getting off, route guidance such as "It is a route to get off at C interchange" is given again. 2km before and 1km before the exit you get off, "About 2km (or 1km) ahead, it is the C interchange exit.", 50
At 0 m, you will be given a route guidance such as "About 500 m ahead, exit C Interchange. Please be careful." In addition, direction guidance has priority in route guidance such as interchanges and junctions, and as long as there is direction guidance, no left / right directions are given. For example, "About 1km ahead △△
△ In the direction of For example, if there is no direction guidance, the route guidance will be "About 1 km ahead, turn left."

As described above, the route guidance is performed at 2 km, 1 km, and 500 m on the road whose speed limit exceeds 60 km / h, but on the road of 60 km / h or less, the same normal position as that on the ordinary road, that is, "700m""300m"
Route guidance will be provided at three locations "soon."

As described above, in the present embodiment, it is possible to detect that a particular road has been entered and provide route guidance in accordance with this. In particular, since the specific road generally has few intersections and branch points, it is possible to prevent the driver from being uncertain whether the road currently being traveled is the correct route because the opportunity for route guidance is reduced. Further, even on a specific road with a speed limit exceeding 60 km / h, this can be detected and route guidance can be provided accordingly. That is, because the traveling speed is high,
Even if the guidance is provided at the same point as the general road and it is not in time, the driver can operate with a margin.

[0018]

As described above, according to the present invention, it is possible to detect that a particular road such as a toll road has been entered, and to provide a driver with route guidance according to the particular road such as a toll road. . Therefore, it is possible to prevent the driver from worrying about whether he is traveling on the correct route. In addition, by providing route guidance according to the speed limit of a specific road such as a toll road, the driver can perform an operation with a margin.

[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 26 route guidance control unit 26a incoming line 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 on a travel route and guides along a route to a destination, which is an entrance to a road such as a toll road or a highway. And an input line detecting means for detecting that a specific road having a limited number of exits is entered, and when the specific road is entered by this input line detecting means,
And a voice guidance unit that performs voice guidance based on the entry of a specific road.