JP2010210489A - Navigation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To refer to traveling tracks in the past when a vehicle starts to travel, and to previously provide reverse run warning information including information on a point or a route section where a reverse run happened in the past, when there is a route section where a reverse run happened. <P>SOLUTION: This navigation device 1 includes a traveling track storage means 13 for therein sequentially storing nodes and links of roads traveled from a travel start spot of the vehicle to an end spot thereof as traveling tracks, and a traveling track distinction means 14 for extracting links traveled in a direction reverse to a moving direction from the respective traveling tracks stored in the storage means 13 when the vehicle starts to travel. When the vehicle starts to travel, the distinction means 14 refers to traveling track information stored in the storage means 13. When a link is extracted which is in a direction reverse to the moving direction, a warning is provided to the effect that a reverse run happened in the past together with information denoting the link of a road on which the reverse run happened. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a navigation device that can store a travel locus that has been traveled regardless of route guidance and that can use the stored travel locus information. From the information on the travel locus, various significant information, for example, when the road (road link) in which the traveling direction is determined in the past travel has been reversed, the corresponding road (road link) is extracted. The present invention relates to a navigation device that notifies a user of warning information.

  Recently, various electronic devices such as navigation devices, music players, DVD players, television receivers compatible with analog broadcasting and digital broadcasting have been miniaturized and provided as in-vehicle electronic devices.

  Some of these in-vehicle electronic devices are used by being attached to a dashboard of a vehicle, for example, like a navigation device, and more recently equipped with a built-in power supply or an AC power connection means, and are removed from the vehicle and carried outside. In addition, a vehicle-mounted / portable electronic device that can be used in a portable device or at home is also provided.

  As a navigation device that can be mounted on a vehicle, there is also known a device that stores a trajectory of a travel route traveled regardless of route guidance and uses the stored travel trajectory information. For example, in the following Patent Document 1 (Japanese Patent Application Laid-Open No. 2005-233647), a road traveled from the point where the power is turned on until the power is turned off next is defined as a travel road (use road) for one section. , Memorize (learn) along with the arrival point, and if it is traveling on the learned use road, if it receives information on the occurrence of traffic events such as traffic jams or traffic closures on that route, it will notify At the same time, the cost of the road (link) specified from the received traffic information is changed according to the traffic information to search for a detour from the current position with the arrival point of the travel route as a temporary destination, and the vehicle is placed on the detour route. A navigation device for guidance is disclosed.

  By the way, roads on which vehicles travel include roads where the traveling direction of the vehicle is determined, such as one-way streets and expressways, and roads that can travel in both directions, in the opposite direction to the determined traveling direction. Running (reverse running) violates laws and regulations, and there is a risk of causing an accident. Therefore, a navigation device that warns of such reverse running has also been proposed. For example, in the following Patent Document 2 (Japanese Patent Laid-Open No. 2008-26118), when it is detected that a vehicle has entered from a reverse direction with respect to a one-way road, an optimal exit method from the one-way road is described as map data. There is disclosed a vehicle navigation device that searches based on the road map and guides the exit method to a driver via a display device or a speaker.

  In addition, the following Patent Document 3 (Japanese Patent Laid-Open No. 2007-139531) is equipped with a database having information on the reverse road prohibition on an automobile exclusive road, and approaches from the reverse direction to the forward direction of the reverse reverse road. Alternatively, an in-vehicle car navigation system is disclosed in which when the vehicle travels, a reverse warning is prevented by issuing a warning to the driver by voice and screen display as guidance for car navigation.

JP 2005-233647 A (paragraph [0026], paragraph [0028], paragraph [0034] to paragraph [0036]) JP 2008-026118 A (paragraph [0023] to paragraph [0028]) JP 2007-139531 (paragraph [0014] to paragraph [0016])

  However, in the vehicle navigation device disclosed in Patent Document 2, when it is detected that the vehicle has entered from a direction opposite to the traveling direction with respect to the road with the traveling direction determined, the road is promptly This is a guide to find out the intersections that can exit from, and to guide the exit method that can eliminate the reverse run early when reverse run occurs, and warns in advance that reverse run will not occur There was a problem that it was not possible.

  Further, according to the navigation system disclosed in Patent Document 3, when a vehicle approaches from a reverse direction to a road on which a traveling direction is determined, a warning about reverse running is issued. In order to prevent this, the navigation device must always know the current position of the vehicle and check it against map data (road data) to verify the direction of travel of the vehicle and the direction of the road. The problem of having to do arises. In addition, when turning right at the intersection, if the road turned right is a one-way exit, there is a problem that it is not possible to warn in advance because it is unknown whether the vehicle goes straight or turns right.

  As a result of various investigations to solve the above problems, the inventor of the present application pays attention to the fact that past travel trajectories can be accumulated in the navigation device, and examines past travel trajectories at the start of vehicle travel, If there is a reverse route section, the name of the reverse road and the road link are extracted, and it is conceived that the above problem can be solved by notifying the reverse warning information including the reverse route section. Has been completed.

  That is, the present invention has an object to solve the above-mentioned problems, and when there is a reverse route section with reference to a past travel locus at the start of vehicle travel, a point or a route reversely traveled in the past. It is an object of the present invention to provide a navigation device in which reverse running warning information including section information is notified in advance.

In order to solve the above-mentioned problem, the invention according to claim 1 of the present application is
Road data representing roads by nodes and links, each link storing map information including road data having attribute information indicating the direction of travel, and from the vehicle start point to the end point And a control unit that sequentially stores the traveled road nodes and links as travel trajectories in the travel trajectory storage unit. The navigation device is further stored in the travel trajectory storage unit when the vehicle starts to travel. A travel trajectory discriminating unit that extracts a link of a road that travels in a direction opposite to the traveling direction from each travel trajectory, and the control unit stores the travel trajectory in the travel trajectory storage unit when storing the travel trajectory. It is determined whether or not the vehicle has traveled in the opposite direction to the traveling direction indicated in the attribute information, and if it is detected that the vehicle has traveled in the reverse direction, the reverse travel information is detected. A link of a road that has traveled in a direction opposite to the advancing direction with reference to the travel trajectory stored in the travel trajectory storage means when the vehicle starts to travel. When a link that travels in the direction opposite to the direction of travel is extracted, a reverse travel warning that indicates that the link has traveled in the past together with information indicating the reverse traveled link based on the link is extracted. Information is notified by a notification means.

  The invention according to claim 2 is characterized in that the notification means is constituted by a voice notification means and / or a display means.

  The invention according to claim 3 is characterized in that the reverse running warning information is notified every time the vehicle starts to run.

  The invention according to claim 4 is characterized in that the notification of the reverse running warning information is performed every time the vehicle starts to run when the notification is set.

  The invention according to claim 5 is characterized in that an item for inquiring deletion of reverse running information is displayed on the display means, and when the deletion of reverse running information is selected, the reverse running information is deleted.

  In the invention of the present application, the navigation device includes a travel trajectory discriminating unit that extracts a link of a road that travels in a direction opposite to the traveling direction from each travel trajectory stored in the travel trajectory storage unit when the vehicle starts to travel. And the control means determines whether or not the vehicle has traveled in a direction opposite to the traveling direction indicated in the link attribute information when storing the travel locus in the travel locus storage means, and travels in the reverse direction. When it is detected, reverse running information is added to the corresponding link and stored, and the traveling locus determination means refers to the traveling locus stored in the traveling locus storage means when the vehicle starts to travel, When a link of a road that has traveled in the direction opposite to the traveling direction is extracted and a link that has traveled in the direction opposite to the traveling direction is extracted, the link is previously displayed together with information indicating the link that has traveled backward based on the link. Run was possible to notify the notification unit reverse run warning information indicating that there is. Further, the notification means is constituted by voice notification means and / or display means.

  According to such a configuration, when there is a backward trajectory in the past, it is possible to warn in advance that there has been a reverse run along with the point or route section where the reverse run occurred when the vehicle starts to run. It is effective in preventing the occurrence of

  Further, the reverse running warning information is notified every time the vehicle starts to travel, or every time the vehicle starts traveling when the notification is set. According to this configuration, when there is a backward trajectory in the past, it is possible to warn in advance that there has been a reverse run along with the point or route section where the reverse run occurred when the vehicle starts to run.

  Further, an item for inquiring to delete the reverse running information is displayed on the display means, and when the deletion of the reverse running information is selected, the reverse running information is deleted. According to such a configuration, it is possible to eliminate the annoyance of being notified of warning about the reverse running warning information already known, and to arrange only necessary reverse running warning information.

It is a block diagram which shows the structure of the navigation apparatus concerning the Example of this invention. It is a flowchart which shows the procedure which memorize | stores a driving locus in the navigation apparatus concerning the Example of this invention. It is a figure which shows an example of the data structure of the traveling locus data memorize | stored in the traveling locus storage means. It is a flowchart which shows the procedure which alert | reports reverse running warning information in the navigation apparatus concerning the Example of this invention.

  Hereinafter, specific examples of the present invention will be described in detail with reference to examples and drawings. However, the embodiments shown below exemplify a navigation device for embodying the technical idea of the present invention, and are not intended to specify the present invention for this navigation device. The present invention is equally applicable to navigation devices of other embodiments included in the scope.

  FIG. 1 is a block diagram showing a configuration of a navigation apparatus in an embodiment of the present invention. The navigation device 1 may be a navigation device used for in-vehicle use by being mounted on a vehicle such as an automobile, or may be of a type that can be removed from the vehicle and carried by a user. In the following description, these are collectively referred to as a navigation device.

  The navigation device 1 includes a control means 10, a current position detection means 11, a map storage means 12, a travel locus storage means 13, a travel locus determination means 14, a display means 15, a voice notification means 16, an input means 17, and the like. Has been.

  The control means 10 is constituted by a processor including a CPU, RAM, and ROM (not shown), and controls the operation of each part of the navigation device 1 according to a control program recorded in the RAM and ROM.

  The current position detection means 11 is composed of, for example, a GPS receiver and receives radio waves including time information from a plurality of GPS satellites orbiting the earth and calculates current position information based on the received radio waves. It is.

  Further, the current position detecting means 11 may be used in combination with a self-contained navigation means comprising an angle control sensor, an acceleration sensor, a distance sensor, a direction sensor, and the like. In this case, the travel distance and travel direction of the vehicle are detected, and the current position is obtained by adding these values to the reference position. This current position detection method, when combined with GPS reception, is effective in tunnels where GPS radio waves cannot be received or in high-rise buildings where errors are likely to occur.

  In addition to map information, the map storage unit 12 stores road data that expresses nodes such as intersections and branch points of each road and links between the nodes. Each link includes attribute information indicating the traveling direction. In general, the road data link in the navigation device is bidirectional (up and down), and the attribute information of the link traveling direction is bidirectional on a road having no vertical lane separation. However, on the expressway, the traveling direction is determined, and the traveling direction of either up or down is stored as attribute information. Similarly, since the direction in which a one-way road can travel is restricted, the traveling direction of either up or down is stored as attribute information.

  Each time the vehicle travels without receiving route search and route guidance, the control means 10 switches from the departure point (for example, ignition ON: vehicle power-on point) to the destination point (for example, ignition OFF: vehicle power-off). The nodes and links that have passed through to the point) are sequentially stored in the travel locus storage means 13 as a travel locus. At this time, when the traveling direction determined for the link stored as attribute information of the passing link and the current traveling direction of the vehicle are checked, and the vehicle travels in a direction opposite to the traveling direction determined for the road link In this case, reverse running information indicating reverse running is added to the passing link data and stored in the running locus storage means 13. The reverse running information may be added, for example, as flag information when storing the link number of the passing link (“0” if reverse running, “1” if reverse running).

  Then, when the vehicle travels next time, when the power source (ignition) is turned on and the vehicle starts traveling, the traveling locus determination means 14 refers to the traveling locus stored in the traveling locus storage means 13 and determines the traveling direction. The links of roads that run in the opposite direction are extracted. Extraction of the reversely run link can be easily performed by referring to the reverse run information, that is, by extracting the link whose flag information is “1” (reverse run). And if the link of the road which run backward is extracted, alert information will be alert | reported to a user using alerting means, such as the display means 15 and the audio alert means 16. It is preferable to notify the warning information together with the reverse traveling point and the route section.

  For example, “Before, you may have run backward in the YY direction at the XX intersection on the ZZ street.” Note that in the past, you may have run backward in the YY direction near the XX street on the XX street. If you are informed of the point or route section where you have run backward, you can be careful not to run backwards if you plan to travel in the vicinity. become. If there is no plan to drive in the vicinity, the user can ignore this warning. Moreover, what is necessary is just to comprise so that a user can set so that the reverse running warning concerning this invention may not be performed with respect to the user who such a warning is troublesome.

  In addition, when the user who has been notified of the reverse running warning stops storing the point or route section and determines that the warning notification is not required again, the use of the traveling locus stored in the traveling locus storage means 13 is unnecessary. It is convenient to configure so that the reverse running information (flag information) can be deleted (reset).

  The voice notification means 16 performs various voice notifications such as route guidance in the navigation device 1. The voice notification means 16 also serves as a means for performing various warning notifications.

  The input means 17 is composed of operation buttons, a touch panel, and the like, and operates various functions of the navigation device 1 and inputs required numerical values and characters.

  Next, the processing procedure of the control means 10 for storing the travel locus in the navigation device 1 according to the embodiment of the present invention will be described with reference to the flowchart shown in FIG.

  When the ignition of the vehicle is turned on and the navigation device 1 is activated (power is turned on) (step S201), the current position is detected by the current position detecting means 11 (step S202), and the detected current position is used as a starting point in the RAM. Temporary storage (not shown) (step S203). When the vehicle starts traveling, a node and a link corresponding to the current position detected every moment by the current position detecting unit 11 are sequentially temporarily stored in the RAM as traveling data (inter-path data) (step S204).

  When storing as the inter-route data, the control means 10 checks the traveling direction determined for the link stored as the attribute information of the passing link and the current traveling direction of the vehicle, and the traveling direction in which the vehicle is defined as the link. It is determined whether or not the vehicle has run in the reverse direction. If there is a link of the road that has run backward (YES in step S205), reverse running information (for example, flag information) indicating that the vehicle has run backward is passed. Is added and stored (step S206). If there is no reverse running link, the process proceeds to step S207.

  In the process of step S207, it is determined whether or not the vehicle has arrived at the destination point. If the vehicle has arrived at the destination (power OFF) (YES in step S207), the current position detected by the current position detection means 11 at the time of power OFF is temporarily stored in the RAM as the destination (step S208). Then, a series of temporary storage data from the departure point to the destination point is stored in the traveling locus storage means 13 as a traveling locus.

  FIG. 3 is a diagram showing an example of the data configuration of the travel locus data stored in the travel locus storage means 13 by the above procedure. In FIG. 3, nodes and links that have passed from the departure point to the destination point are sequentially stored as a traveling locus from route 1 to route n. The starting point is the position when the power is turned on, and the destination point is the position when the power is turned off. However, the first passing node may be the starting point, and the last passing node may be the destination point.

  Each link stores flag information (reverse running information) indicating the presence or absence of reverse running. A flag “1” indicates that reverse running has occurred, and a flag “0” indicates that reverse running has not occurred. In FIG. 3, reverse running information (flag information “1”) indicating that the link has run backward on the link 2 f in the route 2 is stored.

  A procedure for notifying a reverse running warning based on the running locus data as shown in FIG. 3 will be described with reference to the flowchart shown in FIG.

  2 and 4 are both performed in parallel since the vehicle travels without receiving route guidance. The process of FIG. 2 is executed by the control means 10, and the process of FIG. 4 is a process executed by the travel locus determination means 14.

  When the ignition of the vehicle is turned on and the navigation device is activated (power is turned on) (step S401), the travel locus recording determining means 14 determines whether there is a travel locus stored in the travel locus storage means 13 (step S401). S402). If the travel locus is not stored (NO in step S402), the process ends.

  If the traveling locus is stored, the traveling locus determination unit 14 refers to the traveling locus data stored in the traveling locus storage unit 13 (see FIG. 3) and has link information to which the reverse traveling information is added. It is determined whether or not there is a travel locus (route) (step S403). If there is no route having reverse running information (NO in step S402), the process is terminated.

  If there is a route that the reverse run information has (YES in step S403), the travel locus determination means 14 extracts the corresponding link data, and generates a reverse run warning including the reverse run point and route section based on this link data. Then, warning notification is performed by the voice notification means 16 or the display means 15 (step S404). The contents of the warning notification are, for example, “There has been a reverse run in the YY direction on the XX street in the past, please be careful.” Sometimes, please be careful. ”

  In order to make the user determine whether there is reverse running information that does not require reverse warning notification from the next time out of the reverse running information notified by the warning, for example, the display means 15 causes the reverse running information to be determined. A selection item for inquiring whether or not to delete is displayed (step S405). If it is determined in step S406 that there is nothing unnecessary by the user (NO in step S406), the process ends.

  When unnecessary reverse running information is selected by the user (YES in step S406), in step S407, the traveling locus determination means 14 uses the reverse running information (flag information “1”) added to the corresponding link. Delete (clear to “0”). In the case of the example of FIG. 3, the flag information added to the link 2 f of the route 2 is cleared. If there are multiple reverse running links, display a list and select them.

  Note that if the deletion function is not provided, the processing in steps S405 to S407 may be omitted. Also, the processing of FIG. 4 (reverse running warning) may be automatically performed every time the vehicle starts to travel, and a function selection button or the like is provided to perform this processing only when the user desires. It can also be configured.

  As described above, according to the navigation device 1 according to the present invention, when there is a reverse route section with reference to a past travel locus at the start of traveling of the vehicle, a point that has traveled backward in the past in advance. And reverse running warning information including information on the route section can be notified.

1: navigation device 10: control means 11: current position detection means 12: map storage means 13: travel locus storage means 14: travel locus determination means 15: display means 16: voice notification means 17: input means

Claims (5)

Road data representing roads by nodes and links, each link storing map information including road data having attribute information indicating the direction of travel, and from the vehicle start point to the end point In a navigation device comprising a control means for storing nodes and links of a road that has traveled in the travel locus storage means in turn as a travel locus,
The navigation device further includes a travel trajectory discriminating unit that extracts a link of a road that travels in a direction opposite to the traveling direction from each travel trajectory stored in the travel trajectory storage unit when the vehicle starts to travel.
When storing the travel locus in the travel locus storage means, the control means determines whether or not the vehicle has traveled in a direction opposite to the traveling direction indicated in the link attribute information, and traveled in the reverse direction. If it is detected, reverse running information is added to the corresponding link and stored, and the traveling locus determination means refers to the traveling locus stored in the traveling locus storage means when the vehicle starts to travel, A link of a road that has traveled in a direction opposite to the traveling direction is extracted, and based on the extracted link, a reverse travel warning indicating that the link has traveled in the past together with information indicating the reverse traveled link. A navigation apparatus characterized in that information is notified by a notification means.   The navigation device according to claim 1, wherein the notification unit includes a voice notification unit and / or a display unit.   The navigation device according to claim 1 or 2, wherein the reverse running warning information is notified every time the vehicle starts to travel.   The navigation apparatus according to claim 1 or 2, wherein the notification of the reverse running warning information is performed every time the vehicle starts to travel when the notification is set.   5. The item for inquiring deletion of reverse running information is displayed on the display means, and when the deletion of reverse running information is selected, the reverse running information is deleted. The navigation device according to item.

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