JP3118092B2 - Vehicle 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 apparatus for a vehicle, and more particularly, to a re-search for a route when the vehicle goes off the route.

[0002]

2. Description of the Related Art Various devices for reducing the burden on a driver have been studied and are being mounted on vehicles. Among them, there is a vehicle navigation device for guiding a route to a destination. . Then, this navigation device has a function of notifying a driver of a route to be selected when passing through a junction such as an intersection, and a device that guides a route by a guidance voice is known (for example, JP-A-1-17819).

This route guidance device has a function of searching for a route from the current position to the destination by inputting a destination, and displaying the route obtained by the search to notify the driver. it can. In addition, it has a function of detecting the current position of the vehicle, and displays both the route and the current position during traveling to perform route guidance.

[0004] On the other hand, there is a case where the vehicle deviates from a planned route (route) even though 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 Application Laid-Open No.
Japanese Patent Application Publication No. 15 proposes a device that, when a vehicle deviates from a preset route, notifies the driver of the deviation and re-searches the route to the destination.

[0005] Thus, even when the driver deviates from the route, the driver can obtain a route guidance from the place to the destination, and a suitable route guidance can be obtained.

[0006]

However, on the way to the destination, the driver can shop at a store along the road,
In order to pick up a passenger on the way, the route may be intentionally deviated on the assumption that the person returns to the scheduled route.
In the conventional apparatus, the re-search is automatically performed even in such a case. Further, when the route returns to the first route on a route different from the re-search result, the re-search is performed again. Then, the guidance is interrupted during the re-search. As described above, unnecessary re-search is performed, and there is a problem that the operation of the apparatus does not meet the user's request.

Therefore, the applicant of the present application has previously filed Japanese Patent Application No. 4-1.
No. 95777 proposed a navigation system in which a re-search is performed only when the user is off the route and the search switch is operated. However, some drivers may wish to return to the original search route if they deviate from the route, and even in such a case, as a result of the re-search, a different route from the original search route, that is, from the current location, Since a new route to the destination is displayed, various demands of the driver cannot be satisfied.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide a vehicle navigation device that can perform a more effective re-searching that matches a driver's driving preference.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a vehicular navigation apparatus for searching for a route to a destination and providing guidance along the obtained route. A current position detecting means for detecting a current position; a comparing means for comparing a guide route currently being guided with the current position; a path deviation detecting means for detecting a path deviation based on a comparison result; and the path deviation after There has been detected, the re-search in the first re-search means for re-searching for a route from the current position to the original guide route, after the path out is detected, a route from the current position to the destination A second re-searching unit, a first re-searching switch for instructing the first re-searching unit to perform a re-searching, and a second re-searching unit for instructing the second re-searching unit after being instructed by the first re-searching switch. No. to instruct re-search Two re-search switches and the first
Control means for providing guidance on a new route obtained by the first re-search means or the second re-search means in accordance with an instruction of a re-search switch or the second re-search switch. The present invention also provides a route to a destination.
Vehicle navigation that searches for information and provides guidance along the obtained route
A gating device for detecting a current position of a vehicle.
Location detection means, the guidance route currently being guided and the current
Based on the comparison means for comparing the location and the comparison result,
Path deviation detecting means for detecting a path deviation, and the path
Set a point on the original guidance route after an outage is detected
And re-searching the route from the current position to the point.
(1) re-search means, after the deviation of the route is detected,
Second re-search for re-searching the route from the current position to the destination
Instruct search means and re-search to the first search means
A first re-searching switch that performs
A second re-search switch for instructing a re-search, and
Indication of a search switch or the second search switch
The first re-search means or the second re-search means
Control means for providing guidance on the new route obtained in
It is characterized by the following. Here, the first re-search switch and
The second re-search switch is composed of the same switch,
The first re-search switch is switched according to the number of times the same switch is operated.
And the second re-search switch is switched.
Preferably, it can be selected uniformly. In addition, the
(1) The re-search switch operates when the deviation from the route is detected.
Appears, the second re-search switch is the path disconnected
Preferably, it is displayed when it is detected and the first search switch is operated .

[0010]

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. Thus, unnecessary re-search can be effectively prevented.

There are also two types of re-searching methods: re-search for returning from the current position to the original search route (first re-search) and re-search from the current position to the destination (second re-search). Can be matched with the driver's driving preference by adopting a configuration in which the driver can appropriately select by using a switch.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments according to the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of the present apparatus. A map information storage unit 10 that stores information such as roads, place names (intersection names), building names, and river names is provided, and the stored map information can be read as needed. I have. The map information storage unit 10 is separately provided with a search information storage unit 10a for search, and is used for search calculation described later. Further, a GPS receiver 14 using a satellite navigation system (hereinafter referred to as GPS) for measuring the current position of the own vehicle.
A direction sensor 16 for detecting the traveling direction of the vehicle based on the geomagnetism; and a distance sensor 18 for detecting the traveling distance based on the number of rotations of the wheels. Determines the current position of the vehicle. Further, information from the steering sensor 17 is also input, and is used for map matching or the like in which the current position is corrected to the position of the intersection on the map when the intersection turns right or left.

When performing route guidance to a destination, the destination is instructed on a screen of a display unit to be described later by the input unit 19, or input by a place name or the like, and the current position calculated by the current position measuring unit 12 is calculated. Calculation unit 2 calculates the route from the position to the destination
The calculated route is calculated by the route calculation unit 22 included in the route storage unit 0, and the calculated route is stored in the route storage unit 24. Note that an appropriate route search method is employed for calculating the route.

After inputting the destination and determining the route, actual route guidance is performed. The route guidance control 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 the current position and traveling direction of the own vehicle with the route stored in the route storage unit 24. Is displayed on the display unit 28.

The display unit 28 is provided in an instrument panel near the driver's seat.
To check the position of the vehicle and obtain information about the future route. FIG. 5 shows an example of this display. In FIG. 5, the selected route is indicated by a thick solid line 100, and other roads are indicated 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 markings,
The distinction can be made not only by the line thickness but also by changing the color. Further, as shown in FIG. 5, the remaining distance to the destination can be calculated and displayed at a predetermined position on the screen (in the present embodiment, the lower right of the screen).

When the position of the vehicle approaches the intersection to be changed, the display screen changes, and the name of the intersection and the distance to the intersection are displayed. The route guidance control unit 26 also instructs the voice control unit 30 to generate a voice corresponding to the route guidance at the intersection at the same time as the display switching. The voice control unit 30 reads information stored as digital data in the voice storage unit 32, converts the information into an analog signal, and drives the speaker 34. Then, a route instruction is given to the driver from the speaker 34, for example, "the intersection is about 300 m ahead at the *** intersection to the left." This voice instruction is performed at predetermined intervals until the vehicle passes through the intersection. For example, if the vehicle is traveling on a road with two or more lanes, the first time is 700 m before the intersection and the second time is 300 m before the intersection.
The final guidance will be given in front of m. These guidance voices are stored in the voice storage unit 32 as digital data for each phrase. Therefore, when outputting a guidance voice, a plurality of voices are read out, synthesized into a phrase, and output from the speaker 34 as a guidance signal. The output timing of the guidance voice is detected by the route guidance control unit 26, and the voice control unit 30 performs processing for voice output.

In the present embodiment, the display unit 28 has a screen constituted by a touch panel.
Function as That is, the driver can input data by touching a place name or the like displayed on the display unit 28. In addition, the input unit 19 includes a menu key for returning to a menu screen for selecting a process such as input of a destination and a volume adjustment, a map key for displaying a map, a screen key for displaying a current location, or A current location / guidance key for requesting guidance in that state, an air conditioner key for displaying an air conditioner adjustment screen, an audio key for displaying an audio adjustment screen, and the like are provided.

If a wrong route is selected during traveling, the current position deviates from the planned route. Therefore, the route deviation determination unit 26a in the route guidance control unit 26 recognizes a route deviation from the comparison between the current position and the route. on the other hand,
The display as shown in FIG. 2 is performed on the display unit 28. If the current position deviates from the route, the current position display becomes a point away from the route as shown in FIG.

In this embodiment, when the vehicle deviates from the route, the driver is allowed to select one of two types of search methods. FIG. 2 shows a processing flowchart when a route deviates in this embodiment. First, when it is determined that the route deviates, the route guidance control unit 2
6 displays a re-search switch on the navigation screen in S101. The "research" display portion at the bottom of the screen in FIG. 6 is the touch switch. By operating the touch switch, a first search, that is, a research from the current location to the original search route is performed. . Then, when the display of "re-search" is touched, (S
102), and proceeds to the next S103. In this step S103, a re-search (all routes) switch is displayed. The part displayed as "research and search all routes by retouch" at the bottom of the display screen of FIG. 7 is the research (all routes) switch. Whether or not this touch switch has been operated is determined in S104.
And if no operation has been performed, as described above, S
At 105, the route from the current location to the original search route for which route guidance has been performed is searched again (first search). FIG. 3 is a flowchart of the first search process. First, search data around the current location is read from the search information storage unit 10a in the map information storage unit 10 in S201. next,
In S202, a search between the current location and the original search route is performed. This search is performed as a route search from the current location to the shortest point on the original search route, with the shortest point from the current location to the original search route as the temporary destination. Then, it is determined in S106 whether or not the first search has been completed, and if completed, the search result (first route) is displayed on the screen.

On the other hand, if the re-search switch is operated again on the screen display of FIG. 7, YES is determined in S104, and the route from the current position to the original destination is searched again in S108 (second). search). FIG. 4 is a flowchart of the second search process. First, in S301, the search data between the current position and the destination is stored in the map information storage unit 10.
It is read from the search information storage unit 10a in the server. And S3
At 01, a route search to the destination is performed. This search is performed by the same search method as when the original route search is performed, for example, the Dijkstra method. During the search, a screen as shown in FIG. 8 is displayed to notify the driver that the search is being performed, and when the search is completed, the screen is displayed on the screen in S109. FIG. 9 shows an example of a display of a new search result (second route) when the second search is completed.

As described above, in the present embodiment, when a route deviation is detected, the route deviation is notified by displaying the route and the current position and displaying the re-search key instead of immediately performing the re-search. Stop. Then, when the re-search key is touched, a re-search is performed for the first time, a first search is performed by operating the touch switch once, that is, a search from the current location to the original search path is performed, and the touch switch is operated again. In addition, by performing a new search from the current location to the destination, it is possible to effectively prevent unnecessary re-searches from being performed when the route intentionally deviates, etc. Thus, it is possible to perform the route guidance matched.

In this embodiment, the switch for instructing the start of the first search and the switch for instructing the start of the second search are both used. (Either is selected according to the number of times the touch switch is operated.) Configuration), of course,
It goes without saying that a configuration in which these switches are separately provided may be adopted.

[0024]

As described above, according to the vehicular navigation system of the present invention, the re-search is performed only when the vehicle is off the route and the re-search switch is operated. Thus, unnecessary re-search can be effectively prevented.

In the present invention, as the re-search, the driver appropriately selects two types of re-searches, a search for returning from the current location to the original search route and a search for a new route from the current location to the destination. Therefore, it is possible to provide a more diverse and highly flexible navigation system that matches the driver's driving preference.

[Brief description of the drawings]

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

FIG. 2 is a re-search flowchart of the embodiment.

FIG. 3 is a flowchart illustrating a first search of the embodiment.

FIG. 4 is a flowchart illustrating a second search of the embodiment.

FIG. 5 is a diagram illustrating an example of a display screen according to the embodiment.

FIG. 6 is a diagram illustrating an example of a display screen according to the embodiment.

FIG. 7 is a diagram illustrating an example of a display screen according to the embodiment.

FIG. 8 is a diagram illustrating an example of a display screen according to the embodiment.

FIG. 9 is a diagram illustrating an example of a display screen according to the embodiment.

[Explanation of symbols]

 Reference Signs List 10 Map information storage unit 12 Current position measurement unit 19 Input unit 20 Operation unit 26 Route guidance control unit 28 Display unit 30 Voice control unit 32 Voice storage unit 34 Speaker

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kazuki Maekawa 10 Takane, Fujii-machi, Anjo, Aichi Prefecture Inside Aisin AW Co., Ltd. (72) Inventor Tohru Ito 1 Toyota Town, Toyota City, Aichi Prefecture (56) References JP-A-3-136198 (JP, A) JP-A-61-220100 (JP, A) JP-A-2-6713 (JP, A) JP-A-1-173815 (JP, A A) Japanese Utility Model 63-198243 (JP, U) International Publication 92/4683 (WO, A1) (58) Fields investigated (Int. Cl. ⁷ , DB name) G08G 1/0969 G01C 21/00

Claims (4)

(57) [Claims] 1. A vehicle navigation device that searches for a route to a destination and guides the vehicle along the obtained route, comprising: a current position detecting means for detecting a current position of the vehicle; comparing means for comparing the guide route and the current position, based on the comparison result, a path out detecting means for detecting a path out, after the path out is detected, the current position to the original guide route First re-search means for re-searching a route, second re-search means for re-searching a route from the current position to the destination after the deviation of the route is detected, a first re-search switch for instructing the re-search Te, after being instructed by the first re-search switch, the second
A second re-search switch for instructing the re-search means to perform a re-search, and a second re-search switch obtained by the first re-search means or the second re-search means according to an instruction of the first re-search switch or the second re-search switch. Control means for performing guidance on a new route, and a navigation device for a vehicle. 2. A route to a destination is searched, and a route obtained is obtained.
A vehicle navigation system that provides guidance along the road
Current position detecting means for detecting the current position of the vehicle, and comparing a current guidance route with the current position.
A comparison means, and a path for detecting a path deviation based on the comparison result.
Detecting means and a point on the original guide route after the route deviation is detected
And re-search the route from the current position to the point
A first re-searching means for detecting the deviation of the route from the current position after the deviation has been detected.
Second re-search means for re-searching a route to a destination, and first re-search for instructing the first re-search means for re-search.
A second switch for instructing the second search means to perform a search again.
And search the switch, the first re-search switch or the second re-search switch
Switch the first re-search means or the second re-search means.
Control means for providing guidance on a new route obtained by the search means
When, the vehicle navigation apparatus characterized by having a. 3. The apparatus according to claim 1 , wherein
Oite, wherein the first re-search switch second re-search switch the
It consists of one switch and responds to the number of times the same switch is operated.
The first search switch and the second search switch
Can be selected alternatively by switching
Characteristic vehicle navigation device. 4. An apparatus according to claim 1 , wherein
In the first re-search switch, the path deviation is detected.
Is displayed, the second re-search switch detects the off-route,
Displayed when the first re-search switch is operated.
A navigation device for a vehicle, characterized in that: