JP4025599B2 - Navigation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a navigation device that performs a re-search when deviating from a guidance route.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in some kinds of navigation devices, when a certain distance is deviated from a guidance route, a re-search function is activated to perform a re-search (reroute) to display a new route.
[0003]
FIG. 4A and FIG. 4B show an example in which a new route is displayed by re-routing by this type of conventional navigation device. In FIG. 4 (a), when a straight-ahead guidance route is turned to the right, the re-search function is activated assuming that a certain distance has been deviated from the guidance route. Therefore, the guidance route after the reroute as shown in FIG. 4B can be displayed on the screen of the display means.
[0004]
[Problems to be solved by the invention]
However, since it takes time until the guidance route is displayed again on the navigation screen by the re-search function, the user is forced to travel without the guidance route for a while, and is uneasy for the user who travels in a place where there is no intuition. There was a problem that I had to feel it.
[0005]
Therefore, an object of the present invention is to provide a navigation device that can automatically reroute a guidance route and display a new guidance route when it is about to deviate from the guidance route.
[0006]
[Means for Solving the Problems]
The navigation device of the present invention includes a guidance route search means for searching for a guidance route to a destination, a traveling lane detection means for detecting a lane that is running, and a route departure detection that detects that the vehicle is about to deviate from the guidance route. And when the route deviation detecting means detects that the distance to the branch point on the guidance route is less than a predetermined distance and is traveling in a lane that deviates from the guidance route, the guidance route search The means re-searches for a guidance route that travels on the deviating lane.
[0007]
With such a configuration, while driving on a previously searched guide route, change the lane and try to deviate to a position where the distance to the branch point on the guide route is within a predetermined distance and should not return to the original lane. When the vehicle travels on the lane, it is possible to re-search for a route traveling on the lane that is about to deviate in advance before actually deviating from the guidance route.
[0008]
The navigation device according to the present invention further includes departure notifying means for notifying that the departure from the guidance route is in progress, and the route departure detection means has a distance to a branch point on the guidance route that is not less than a predetermined distance. When it is detected that the vehicle is traveling on a lane that deviates from the guidance route, the guidance route search unit does not perform a re-search and notifies that the departure notification unit is about to deviate from the guidance route. And
[0009]
With such a configuration, when the lane is changed during traveling on the guidance route that has been searched in advance, but the distance to the branch point on the guidance route is not less than the predetermined distance, the guidance route is not re-searched. It is possible to notify that it is about to deviate.
[0010]
The navigation device of the present invention further comprises route instruction means for indicating the guidance route searched by the guidance route search means, and the route deviation detection means has a distance to a branch point on the guidance route that is less than a predetermined distance. When it is detected that the vehicle is traveling on a lane that deviates from the guidance route, the guidance route search unit re-searches for a guidance route that travels on the deviating lane, and the route departure detection unit detects the turn signal of the host vehicle. When detected, the route instruction means indicates the re-searched guidance route.
[0011]
With such a configuration, while driving on a previously searched guidance route, the lane is changed to try to deviate to a position where the distance to the branch point on the guidance route is within a predetermined distance and should not return to the original lane. When it is definite to change the direction of travel by blinking the blinker and re-searching the route that runs on the lane that is going to deviate in advance before actually deviating from the guidance route Then, the re-searched guidance route is instructed.
[0012]
In the navigation device of the present invention, when the route deviation detecting means detects the turn signal of the vehicle ahead and the turn signal of the own vehicle is detected for a predetermined time or more, the guidance route search means travels on the deviating lane. It is characterized by re-searching the guidance route.
[0013]
With this configuration, in the pre-search once was derived route travel, when the can are in varying puff that lane ahead in the traveling direction of the vehicle by blinking the turn signal has become definite, actually guided route It is possible to re-search for a route traveling on the lane that is going to deviate in advance before deviating from.
[0014]
In the navigation device of the present invention, when the route departure detecting unit detects a turn signal of the host vehicle for less than a predetermined time, the departure notifying unit does not perform a re-search and the departure notifying unit performs the guidance. It is characterized by notifying that it is deviating from the route.
[0015]
With such a configuration, an attempt was made to change the traveling direction by blinking the blinker during traveling on the guidance route searched in advance, but when the blinker signal blinked for less than a predetermined time, It is determined that the change has not been confirmed, and it is possible to notify that the vehicle is about to deviate from the guidance route without performing a re-search.
[0016]
In the navigation device of the present invention, when the route deviation detecting means detects that the distance to the branch point on the guidance route is less than a predetermined distance and is traveling on a lane deviating from the guidance route, The guide route searching means re-searches the guide route by increasing the link cost of routes other than the deviating lane according to the distance to the branch point on the guide route.
[0017]
With such a configuration, while driving on a previously searched guidance route, the lane is changed to try to deviate to a position where the distance to the branch point on the guidance route is within a predetermined distance and should not return to the original lane. When you re-search for a route that runs on a lane that you are going to deviate in advance before actually deviating from the guidance route, increase the link cost other than the direction you are going to deviate and deviate This makes it easier to set a guidance route for the route in the traveling direction.
[0018]
Further, the navigation device of the present invention comprises voice recognition means for recognizing the voice of the operator, and detects that the route deviation detection means is about to deviate from the guidance route based on the direction of travel direction by the voice of the operator. The guidance route search means re-searches for a guidance route traveling in the deviating direction.
[0019]
With such a configuration, when the operator wants to travel on a route other than the guide route while traveling on the guide route that has been searched in advance, the direction of travel is instructed by voice, thereby re-searching the guide route in that direction. Will be able to.
[0020]
The navigation device of the present invention is characterized in that the route instruction means instructs the guidance route by at least one of display and voice.
[0021]
With such a configuration, the re-searched guidance route can be displayed on the screen or guided by voice.
[0022]
The route search method of the navigation device according to the present invention is configured such that when it is detected that the distance to the branch point on the guidance route is less than a predetermined distance and the vehicle travels on a lane that deviates from the guidance route, the departure lane When the guidance route traveling on the vehicle is re-searched and the turn signal of the vehicle is detected, the re-searched guidance route is indicated.
[0023]
With such a configuration, while driving on a previously searched guidance route, the lane is changed to try to deviate to a position where the distance to the branch point on the guidance route is within a predetermined distance and should not return to the original lane. When it is definite to change the direction of travel by blinking the blinker and re-searching the route that runs on the lane that is going to deviate in advance before actually deviating from the guidance route Then, the re-searched guidance route is instructed.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0025]
FIG. 1 is a block diagram showing a configuration of a navigation device according to an embodiment of the present invention. In FIG. 1, the navigation device of the present invention is when the vehicle is about to depart from the guidance route by information obtained from the vehicle movement detection unit 11, the traveling direction detection unit 12 and the lane detection unit 13 connected to the control unit 10. The control unit 10 automatically reroutes the guidance route based on the map data in the map database 14 and displays the new guidance route on the display unit 15.
[0026]
In this way, the control unit 10 functions as a route deviation detection unit that detects that the vehicle is about to deviate from the guidance route based on information obtained from the vehicle movement detection unit 11, the traveling direction detection unit 12, and the lane detection unit 13. In addition, it has a function as a guidance route search means (not shown) that searches for a guidance route to the destination based on the map data of the map database 14 that should naturally be provided as a navigation device.
[0027]
For example, the vehicle movement detection unit 11 detects the movement of the vehicle based on the vehicle speed pulse from the vehicle speed sensor, or detects the movement of the vehicle by performing positioning using GPS.
[0028]
The traveling direction detection unit 12 detects, for example, the traveling direction from the operation signal of the winker (direction indicator) of the own vehicle, or detects the operation of the winker (direction indicator) of the preceding vehicle with the image recognition camera or the front vehicle. Advancing direction is detected by inter-vehicle communication.
[0029]
The lane detection unit 13 serving as a traveling lane detecting unit that detects a traveling lane detects, for example, a traveling lane using an ultrasonic sensor or the like, or a beacon reception information or a magnetic nail sensor embedded in a road surface. Detects the lane that is running.
[0030]
A display unit 15 serving as a departure notifying means for notifying that a guidance route searching means (not shown) indicates a guided route searched for and a departure indicating means detected by the route departure detecting means is about to deviate. For example, a liquid crystal display, a speaker, an LED, a buzzer, and the like are provided.
[0031]
FIG. 2A and FIG. 2B are diagrams for explaining how a new route is displayed by re-searching by the navigation device of the present invention. In FIG. 2A, it is assumed that the navigation device has already set a straight guidance route to the destination, and the vehicle is traveling straight ahead based on the guidance route. In FIG. 2A, when the host vehicle is traveling straight on the basis of the guidance route, the traveling lane is detected by the lane detection unit 13 shown in FIG.
[0032]
The detected traveling lane is a right turn lane, which is about to deviate from the guidance route at the time of detection, and to the branch point (for example, the nearest intersection) on the guidance route by the vehicle movement detection unit 11 shown in FIG. Since the distance reaches less than the lane change impossible distance and cannot return to the straight guidance route, the control unit 10 shown in FIG. 1 is automatically based on the map data of the map database 14 shown in FIG. Reroute the guidance route. In this case, a link cost other than the direction of travel that is about to depart is increased, and a guidance route is easily set for the path of the direction of travel that is about to depart. In addition, as the display timing of the guidance route after the reroute, the rerouted guidance route is instructed when it is definite to change the traveling direction by blinking the turn signal of the host vehicle.
[0033]
In the case as shown in FIG. 2 (a), the vehicle is about to depart from the guidance route at the time of detection, and to the branch point (for example, the nearest intersection) on the guidance route by the vehicle movement detection unit 11 shown in FIG. If the distance is equal to or longer than the lane changeable distance, a warning is displayed that the vehicle is about to deviate from the guidance route without performing reroute so that the vehicle can return to the straight guidance route.
[0034]
Then, as shown in FIG. 2B, by displaying the route after the reroute on the display unit 15 as the route instruction means shown in FIG. 1 before reaching the branch point (for example, the nearest intersection) on the guidance route. In addition, the user does not feel uneasy even when traveling in a place where there is no intuition and there is no scene to travel without displaying the guidance route. As a display method of the display unit 15 in this case, it is possible to appropriately adopt whether the guidance route is displayed on the screen or is guided by voice.
[0035]
In FIGS. 2A and 2B, the reroute at the time of right turn traveling from the straight route is described. However, the same description can be applied to the reroute at the time of straight travel from the right and left turn route. it can.
[0036]
FIG. 3 is a flowchart for explaining the operation of the navigation apparatus of the present invention. In FIG. 3, first, the vehicle movement and direction are detected by the vehicle movement detection unit 11 and the traveling direction detection unit 12, and the vehicle travel lane is detected by the lane detection unit 13 (step 31). Next, it is determined whether the host vehicle is about to deviate from the guidance route (step 32).
[0037]
If the vehicle has not deviated from the guidance route, the same route is continuously displayed without re-routing. On the other hand, when the vehicle is about to depart from the guidance route, it is determined whether the distance to the branch point on the guidance route is equal to or longer than the lane change impossible distance (step 33).
[0038]
If the distance to the branch point on the guidance route is greater than or equal to the lane change impossible distance, a warning is displayed that the vehicle is about to deviate from the lane (step 34).
[0039]
If the distance to the branch point on the guidance route is not greater than the lane change impossible distance, the route is searched again and a new route is displayed (step 35).
[0040]
In step 33, when the vehicle is about to deviate from the guidance route, it is determined whether the distance to the branch point on the guidance route is equal to or longer than the lane changeable distance. You may make it determine whether the direction detection part 12 detects the winker signal of the vehicle ahead, and detects the winker signal of the own vehicle more than predetermined time. Thus, during the pre-search once was derived route travel, when the can are in varying puff that lane ahead in the traveling direction of the vehicle by blinking the turn signal has become definite, actually guided route Before you deviate, you can reroute your route on the lane you are about to deviate in advance.
[0041]
In the above, if the blinker signal of the host vehicle blinks for less than a predetermined time, it is judged that the change in the traveling direction has not been confirmed, and the vehicle is about to deviate from the guidance route without performing a reroute. Is displayed as a warning.
[0042]
Further, by providing the navigation device of the present embodiment with a voice recognition unit (not shown), when the operator wants to travel in a direction deviating from the guidance route, the operator can travel in a direction such as “right next intersection”. When the voice is changed, the voice recognition unit (not shown) recognizes the voice, and can reroute before reaching the intersection based on the instruction.
[0043]
【The invention's effect】
As described above, the present invention can re-search the guidance route in advance even when the vehicle tries to deviate from the guidance route. It is possible to perform navigation route guidance that does not make the user feel uneasy even when traveling in a place where there is no place.
[Brief description of the 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 diagram for explaining how a new route is displayed by re-searching by the navigation device of the present invention. FIG. 3 is a flowchart for explaining the operation of the navigation device of the present invention. FIG. 4 is a diagram showing an example in which a new route is displayed by re-searching by a conventional navigation device.
DESCRIPTION OF SYMBOLS 10 Control part 11 Vehicle movement detection part 12 Travel direction detection part 13 Lane detection part 14 Map database 15 Display part

Claims (12)

A navigation device having a function for guiding a new route obtained by re-searching,
When the vehicle is traveling on a departure lane that leads in a direction deviating from the route being guided, the vehicle is traveling on the new route with respect to at least one of the display unit and the speaker while the vehicle is traveling on the departure lane. A navigation device comprising a control unit for guiding.   The navigation apparatus according to claim 1, wherein the new route includes the departure lane. A navigation device having a function for guiding a new route obtained by re-searching,
When it is determined that the vehicle does not return from the departure lane that leads in a direction deviating from the route being guided to the original lane included in the route that is being guided, the new one is displayed on at least one of the display unit and the speaker. A navigation device comprising a control unit for guiding a route while the vehicle is traveling in the departure lane. The control unit indicates that the vehicle is about to deviate from the route being guided to at least one of the display unit and the speaker when it is not determined that the vehicle does not return from the departure lane to the original lane. The navigation device according to claim 3 , wherein a warning is given.   Whether the control unit determines that the vehicle does not return from the departure lane to the original lane using a distance to a branch point between the direction guided by the original lane and the direction guided by the departure lane. The navigation device according to claim 3 or 4, wherein   The navigation device according to claim 4, wherein the control unit determines whether or not the own vehicle is not returned from the departure lane to the original lane by using presence / absence of a blinker signal.   4. The control unit according to claim 3, wherein the control unit determines whether or not the own vehicle has not returned from the departure lane to the original lane using a blinking time of the blinker. 5. The navigation device according to 4.   The navigation device according to claim 3, wherein the new route includes the departure lane. A navigation device having a re-search function,
When the vehicle is traveling in a departure lane that leads in a direction deviating from the route being guided, the departure is determined when it is determined that the vehicle does not return from the departure lane to the original lane included in the route being guided. A navigation device comprising a control unit that searches for a new route including a lane and determines whether or not the vehicle has not returned from the departure lane to the original lane by using the presence or absence of a turn signal. A navigation device having a re-search function,
When the vehicle is traveling in a departure lane that leads in a direction deviating from the route being guided, the departure is determined when it is determined that the vehicle does not return from the departure lane to the original lane included in the route being guided. A navigation device comprising a control unit that searches for a new route including a lane and determines whether or not the vehicle has not returned from the departure lane to the original lane using the blinking time of the blinker. . A navigation device having a re-search function,
When the vehicle is traveling in a departure lane that leads in a direction deviating from the route being guided, the departure is determined when it is determined that the vehicle does not return from the departure lane to the original lane included in the route being guided. A navigation device comprising a control unit that searches for a new route including a lane and increases a link cost in a direction other than a direction deviating from the route being guided when searching for the new route. A guidance route search means for searching for a guidance route to the destination, a traveling lane detection means for detecting a traveling lane, and a route deviation detection means for detecting that the vehicle is about to deviate from the guidance route,
When the route deviation detection means detects that the distance to the branch point on the guidance route is less than a predetermined distance and is traveling on a lane that deviates from the guidance route, the guidance route search means deviates. Re-examine the guidance route traveling in the lane,
When the route deviation detection means detects the turn signal of the vehicle ahead and the turn signal of the host vehicle for a predetermined time or more, the guidance route search means re-searches for a guidance route that travels on the deviating lane. A featured navigation device.

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