JPH0644490A - Route guiding device for vehicle - Google Patents

Abstract

PURPOSE:To efficiently perform a processing when a vehicle deviates from a route. CONSTITUTION:A display route guiding part detects the deviation of the route of the vehicle by comparing the present position from a present position measuring part 12 with the route obtained at a route calculation part 22. Then, at the time of the route deviation, a display part 28 displays a reretreival key in addition to route and present location display. Then, when the reretreival key is touched, the route from the position at the time to a destination is reretreived and route guiding based on the result is proceeded. When the reretreival key is not touched, the route and present location display is continued as the route deviation is maintained. Thus, useless reretreival is prevented from being performed at the time of the deliberate route deviation.

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, and more particularly to a route re-search when a route is lost.

[0002]

2. Description of the Related Art Various devices for reducing a driver's burden have been studied and are now mounted on vehicles. Among them, there is a route guiding device for guiding a route to a destination. In addition, this route guidance device has a function of informing the driver of a route to be selected when passing through a branch point such as an intersection, and a route guidance is known by a guide voice (for example, it is known. JP-A-1-17819
Issue).

This route guidance device has a function of searching for a route from the current position to the destination by inputting a destination, and the driver can be notified by displaying the route obtained by the search. it can. Also, it has a function of detecting the current position of the vehicle, and displays both the route and the current position when traveling to guide the route.

On the other hand, there is a case where the route deviates from the planned route although the route guidance is performed. In such a case, the driver may want to know the route from the place to the destination. Therefore, Japanese Patent Laid-Open No. 1-1738
Japanese Patent No. 15 discloses a device which, when a vehicle deviates from a preset route, notifies the driver of this and re-searches for a route to a destination.

As a result, even if the driver deviates from the route, the driver can obtain the route guidance from the place to the destination, and can obtain a suitable route guidance.

[0006]

[Problems to be Solved by the Invention] However, on the way to the destination, the driver is shopping at a store along the road,
In some cases, the route may be intentionally departed on the premise of returning to the planned route in order to pick up passengers on the way.
In the conventional device, the re-search is automatically performed even in such a case. Furthermore, if the route returns to the first route on a route different from the result of the re-search, the re-search will be performed again. Then, the guidance is interrupted while the re-search is being executed. In this way, unnecessary re-search is performed, and there is a problem that the operation of the device does not meet the user's request.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a vehicle route guidance device capable of performing effective re-search.

[0008]

SUMMARY OF THE INVENTION The present invention is a vehicle route guidance device for searching a route to a destination and performing route guidance at a branch point or the like, and present position detecting means for detecting the current position of a vehicle. And comparing means for comparing the current position and the route obtained by searching, and the route deviation detecting means for detecting the route deviation based on the comparison result by this comparing means, and for detecting the route deviation to the user. Notification means for notifying, re-search means for re-searching the route from the current position to the destination, re-search switch for instructing re-search, route deviation detection means for detecting route deviation and re-searching Re-search control means for controlling the re-search by the re-search means when the switch is operated.

[0009]

As described above, in the present invention, the re-search is performed only when the vehicle is off the route and the search switch is operated. Therefore, it is possible to effectively prevent unnecessary re-search.

[0010]

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 apparatus. A map information storage unit 10 for storing information such as roads, place names (intersection names), building names, river names, etc. is provided, and the stored map information can be read out as necessary. There is. In addition, a satellite navigation system (hereinafter GPS) for measuring the current position of the vehicle.
Is provided), a direction sensor 16 that detects the traveling direction of the host vehicle based on the geomagnetism, and a distance sensor 17 that detects the traveling distance based on the rotational speed of the wheels. The current position measurement unit 12 determines the current position of the vehicle based on the detection result. In addition, information from the steering sensor 19 is also input and used for map matching or the like for correcting the current position to the intersection on the map when turning right or left at the intersection.

When the route is guided to the destination, the destination is indicated by the input unit 18 on the screen of the display unit, which will be described later, or is input by the place name or the like, and the current position calculated by the current position measuring unit 12 is calculated. The route from the position to the destination is calculated by the route calculation unit 22 included in the arithmetic control unit 20, and the calculated route is stored in the route storage unit 24. An appropriate route search method is used to calculate this route.

After inputting the destination and determining the route, the actual route guidance is performed. The route guidance unit 26 included in the arithmetic control unit 20 reads the map information around the own vehicle from the map information storage unit 10 and superimposes it together with the current own vehicle position and traveling direction and the route stored in the route storage unit 24. Is 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, and the intersection name 110 and the distance 112 to the intersection are displayed. At the same time as this display switching, the route guidance unit 26 instructs the voice control unit 30 to generate a voice corresponding to the route guidance at the intersection. The voice control unit 30 includes a voice storage unit 32.
The information stored as digital data is read out, converted into an analog signal, and the speaker 34 is driven. Then, from the speaker 34, "about 300 m ahead **
* Turn left at the intersection. The route guidance is given to the driver by instructing the route. This voice instruction is given every predetermined distance until the vehicle passes the intersection. For example, when driving on a road with two or more lanes, the final guidance is given 700 m before the intersection, the first time, and 300 m before the second time, 100 m before the intersection. The guide voices are stored in the voice storage unit 32.
Each phrase is stored as digital data.
Therefore, when outputting the guidance voice, a plurality of the guidance voices are read out, the phrases are synthesized, and the guidance voice is output from the speaker 34. The route guidance unit 26 detects the output timing of the guidance voice, and the voice control unit 30 performs a process for outputting the voice.

The right front speaker 3 among the speakers 34
Only 4a is used for the output from the audio 40 and the guidance voice, and the speaker 34a is disconnected from the audio 40 when the guidance voice is output. In addition, the mute circuit 40
The symbol a is for muting the output of the audio 40 at the time of switching in order to prevent noise generation at the time of switching.

In the present embodiment, the screen of the display unit 28 is composed of a touch panel, and the input unit 18
Function as. That is, the driver can input data by touching the place name or the like displayed on the display unit 28. Further, the input unit 18 includes a menu key 18a for returning to a menu screen for selecting a process such as inputting a destination and adjusting volume, and a map key 18 for displaying a map.
b, a current location / guidance key 18c for returning to the screen for displaying the current location or requesting guidance in that state, an air conditioner key 18d for displaying the adjustment screen of the air conditioner, an audio key 18e for displaying the adjustment screen of the audio, etc. It is provided.

If the route is selected wrongly during traveling, the current position will deviate from the planned route. Therefore, the route guidance unit 26 recognizes the deviation of the route from the comparison between the current position and the route. On the other hand, the display shown in FIG. 2 is displayed on the display unit 28, and if the current position deviates from the route, the current position display becomes a point away from the route as shown in FIG.

At this time, the route guide section 26 displays a re-search as shown in FIG. And this "research"
When the display of is touched, the route from the present location to the destination to which the route guidance has been provided is searched again. This search is performed in exactly the same manner as the above, and when the re-search is completed, the route guidance is restarted according to the result.

As described above, in the present embodiment, when the deviation of the route is detected, the re-search is not performed immediately, but the deviation of the route is notified by displaying the route and the current position and displaying the re-search key. Stop. Then, the re-search is performed only when the re-search key is touched. Therefore, it is possible to effectively prevent an unnecessary re-search from being performed when the route is intentionally deviated. In particular, even if the re-search is not performed, the route display and the current position are displayed, and it is possible to prevent the display from disappearing due to the re-search.

[0021]

As described above, according to the vehicle route guiding apparatus of the present invention, the re-search is performed only when the vehicle is off the route and the re-search switch is operated. Therefore, it is possible to effectively prevent unnecessary re-search.

[Brief description of drawings]

FIG. 1 is a block diagram showing an overall configuration of an embodiment.

FIG. 2 is an explanatory diagram showing a display example of route guidance.

FIG. 3 is an explanatory diagram showing a display example of route guidance near an intersection.

FIG. 4 is an explanatory diagram showing a display example when a route is deviated.

[Explanation of symbols]

 10 map information storage unit 12 current position measurement unit 18 input unit 20 arithmetic control unit 26 route guidance unit 28 display unit 30 voice control unit 32 voice storage unit 34 speaker

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toru Ito 1 Toyota Town, Toyota City, Aichi Prefecture, Toyota Motor Co., Ltd. (72) Inventor, Koji Kishi 1 Toyota Town, Toyota City, Aichi Prefecture, Toyota Motor Co., Ltd.

Claims (1)

[Claims] 1. A route guidance device for a vehicle that searches for a route to a destination and guides the route at a branch point or the like, and present position detecting means for detecting the current position of the vehicle, and searching for the current position. Based on the comparing means for comparing the obtained routes, the route deviation detecting means for detecting the route deviation based on the comparison result by the comparing means, the notifying means for notifying the user when the route deviation is detected, and the current position. To a destination, a re-search means for re-searching, a re-search switch for instructing to perform a re-search, and a deviation-of-path detection means for detecting a deviation of a path, and a re-search switch A route search device for a vehicle, comprising: a re-search control unit that controls to perform a re-search by the search unit.