JP2012141269A - Navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation device which searches for a route to arrive at a destination at a time closer to a designated arrival time.SOLUTION: A navigation device has a route searching section 22 which: searches for a route from a current position to a destination based on the destination, the current position, a current time and map data; calculates an estimated arrival time at the destination by the searched route; and when the estimated arrival time by the searched route is earlier than a designated arrival time and a time lag between the estimated arrival time and the designated arrival time is equal to or larger than a prescribed value, searches for another route such that the arrival time at the destination will be within the prescribed time frame from the designated arrival time and closer to the designated arrival time than the arrival time of the previously searched route.

Description

  The present invention relates to a navigation device that searches for a route from a departure point of a moving object to a destination.

  2. Description of the Related Art Conventionally, there have been many inventions related to navigation devices that search for a route to a destination from map information based on the current position, current time, and destination of a mobile body and present the searched route to a user as route guidance. Also disclosed are a technique for calculating the departure time by specifying an arrival time during route search, and a navigation device for searching for and presenting a detour that can be visited by the specified arrival time as disclosed in Patent Documents 1-3. ing.

  According to Patent Document 1, the estimated required time of the route from the current position to the destination is calculated, and when the estimated required time is shorter than the input desired required time, the detour destination that can be routed within the margin time is determined by the user. A navigation device is disclosed that prompts a selection input by displaying according to the degree of preference.

  In Patent Document 2, the time required to go to the facility included in the surrounding information is compared with the margin time that the operator has, and the facility that can be reached within the margin time is searched. A navigation system for displaying is disclosed.

  Patent Document 3 describes a user based on a difference between a time interval between a departure time at a departure place and a desired arrival time at a destination and a required time required to arrive at the destination from the departure place. A route search device that searches for detour spots that can stop by, generates a route that connects the departure point, several detour spots, and the route to the destination, and presents them to the user in descending order of evaluation value. It is disclosed.

JP 2008-003027 A JP 2000-163689 A JP 2003-139553 A

  As described above, in the conventional navigation device described in Patent Documents 1-3, a route is searched through a point where it is possible to drop in within a margin time, but it arrives at the destination at a time closer to the designated arrival time. There is no disclosure of a method for searching for a route to be performed, and there is a problem that the destination may arrive earlier than the designated arrival time.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a navigation device that searches for a route that arrives at a destination at a time closer to the designated arrival time.

  A navigation device according to the present invention includes a map data storage unit that stores map data, an input operation unit that receives an input of a destination and a designated arrival time at the destination, and a current position and a current time of a moving body. A route that searches the route from the current position to the destination based on the information acquisition unit, the destination, the current location, the current time, and the map data, and calculates the estimated arrival time at the destination in the searched route A search unit, and when the estimated arrival time of the searched route is earlier than the specified arrival time and the time difference between the two times is equal to or greater than a predetermined value, within the predetermined time from the specified arrival time and the arrival This is to re-search for a route where the mobile body arrives at the destination at a time closer to the specified time.

  According to the present invention, the route from the current position to the destination is searched based on the destination, the current position, the current time, and the map data, and the estimated arrival time at the destination in the searched route is calculated. If the estimated arrival time of the searched route is earlier than the designated arrival time and the time difference between the two times is greater than or equal to a predetermined value, the mobile object is within the prescribed time from the designated arrival time and close to the designated arrival time. Since the route search unit for re-searching the route arriving at the ground is provided, route guidance on the route arriving at the destination at a time closer to the designated arrival time can be provided.

6 is an explanatory diagram illustrating an outline of navigation processing of the navigation device according to Embodiment 1. FIG. 1 is a block diagram showing a configuration of a navigation device according to Embodiment 1. FIG. It is the figure which showed an example of the setting item and setting content in the arrival time designation | designated mode by the navigation apparatus of Embodiment 1. FIG. 4 is a flowchart illustrating route search processing of the navigation device according to the first embodiment. 4 is a flowchart illustrating route search processing of the navigation device according to the first embodiment.

Embodiment 1 FIG.
FIG. 1 is an explanatory diagram showing an outline of navigation processing of the navigation device according to Embodiment 1 of the present invention. In route guidance from the current position of the moving object to the destination specified by the user, a mode for searching for the fastest route from the current current position to the destination (hereinafter referred to as the fastest mode), or from the current position to the destination When a route search is performed in a mode for searching for a route that arrives at the shortest time (hereinafter referred to as the shortest mode), the user may arrive earlier than the arrival time desired by the user.

  In order to solve such a situation, the navigation apparatus according to the first embodiment searches for a route that arrives at the destination at a time closer to the arrival designated time designated by the user via a stop-off point (hereinafter, referred to as “mode”). (Referred to as arrival time designation mode). In route search in the arrival time designation mode, the arrival at the destination is within a preset time (for example, within 5 minutes from the arrival designation time) via the stop point, etc., and closer to the arrival designation time. Search for a route to go. That is, the route searched in the arrival time designation mode is a route that requires a longer time than the route searched in the fastest mode or the shortest mode. It is preferable to select the time closest to the arrival designated time as the time closer to the arrival designated time.

FIG. 2 is a block diagram showing the configuration of the navigation device according to Embodiment 1 of the present invention. The navigation device 1 according to the first embodiment includes a route guidance processing unit 2, a storage area 3, a clock 11, a GPS 12, a communication unit 13, an input operation unit 14, a display unit 15, and a user preference input unit 16.
The clock 11 and GPS 12 acquire the current time and current position. The communication unit 13 acquires information necessary for route search and traveling of the moving body such as VICS (Vehicle Information and Communication System; registered trademark / hereinafter omitted). The input operation unit 14 is configured with a touch panel or the like, and receives an operation input by a user. The display unit 15 displays a route search result, a route guidance, and an arrival time designation mode setting item according to the display control information output from the route guidance processing unit 2. The user preference input unit 16 inputs a user preference such as “I like the sea” or “I like the mountain” to the storage area 3.

The route guidance processing unit 2 includes a current information acquisition unit 21, a route search unit 22, and a display control unit 23.
The current information acquisition unit 21 acquires the current time and current position from the clock 11 and the GPS 12. The route search unit 22 includes a destination and arrival designated time input via the input operation unit 14, a current position and current time acquired by the current information acquisition unit 21, map data stored in the map data storage unit 32, communication The route search is performed based on the VICS information acquired by the unit 13.

  The route search unit 22 performs route search according to the route search mode set by the user. As a route search mode, a shortest mode or a fastest mode, which is a normal route search, and an arrival time designation mode are provided. The normal route search is not limited to the fastest mode or the shortest mode described above, and can be changed as appropriate. When the fastest mode or the shortest mode is set, the route having the shortest required time or the shortest travel distance from the current position to the destination is searched. On the other hand, when the arrival time designation mode is set, a route that arrives at the destination at a time that is within a predetermined time from the arrival designation time and closer to the arrival designation time via a route that matches the user setting. Explored.

  Here, setting items of user settings will be described. FIG. 3 is a diagram illustrating an example of setting items and setting contents in the arrival time designation mode of the navigation device according to the first embodiment. As shown in FIG. 3, the arrival time designation mode setting items include “no condition”, “user preference”, “general road priority”, “stop”, and “weather”. In the “no condition” setting, a route is set that arrives at the destination within a predetermined time from the designated arrival time and at a time closer to the designated arrival time without visiting the tourist spot. In the setting of “user preference”, the designated arrival time is within a predetermined time from the arrival designated time based on the user preference (for example, the likes of the sea, the hot springs, etc.) preset in the user preference data storage unit 31 described later. The route to reach the destination at a closer time is set. In the “general road priority” setting, a route that arrives at the destination at a time that is the cheapest and closer to the designated arrival time is set based on the general road route and toll information stored in the map data storage unit 32 described later. Is done.

  In the “stop” setting, the stop location information stored in the facility data storage unit 33 to be described later is referred to, the type and number of stop locations set by the user are satisfied, and within the predetermined time from the specified arrival time, and the specified arrival time The route to reach the destination at a closer time is set. As an example of a stop-by place, a store, a drive spot, a sightseeing spot, a spot by scene, and the like are set. When the number of times is set as many as possible, a route that can stop as many as possible in a toilet or a roadside station is set. Finally, in the “weather” setting, the weather information is extracted from the VICS information received by the communication unit 13 and, for example, when snowfall information is acquired, it does not pass through the snow road as much as possible, and matches the weather and arrives. A route that arrives at the destination within a predetermined time from the specified time is set. Note that these setting items are not limited to the items described above, and can be changed and added as appropriate. The setting item may be created by the user.

  The display control unit 23 generates display control information for displaying the search result by the route search unit 22 on the display unit 15. Further, when receiving information indicating that the arrival time designation mode is selected from the route search unit 22, display control information for displaying the arrival time designation mode setting item stored in advance on the display unit 15 is generated. Further, when a route guidance route is selected via the input operation unit 14, display control information for executing the route guidance is generated.

The storage area 3 includes a user preference data storage unit 31, a map data storage unit 32, and a facility data storage unit 33.
The user preference data storage unit 31 stores the user preference input via the user preference input unit 16. User preferences include, for example, “I like the sea”, “I like mountains”, “I like hot springs”, “I like trains”, “I don't like airplanes”. The map data storage unit 32 stores map data necessary for route search. Furthermore, information related to traffic such as tolls is also stored. The facility information data storage unit 33 stores facilities and spots that can be visited such as shops, drive spots, sightseeing spots, toilets, and roadside stations.

Next, the operation of the navigation device 1 according to the first embodiment will be described with reference to FIG. FIG. 4 is a flowchart showing the route search process of the navigation device according to the first embodiment, and particularly shows the route search process when the arrival time designation mode is selected.
When the arrival time designation mode is selected via the input operation unit 14 (step ST1), and when the destination and arrival designation time are input (step ST2), the current information acquisition unit 21 passes through the clock 11 and the GPS 12. The current position and current time are acquired and output to the route search unit 22 (step ST3). The route search unit 22 performs a route search in the fastest mode, which is a normal route search, based on the destination acquired in step ST2, the current position acquired in step ST3, and the current time (step ST4). In step ST4, the route search may be performed in the shortest mode.

  The route search unit 22 calculates a margin time that is a difference between the estimated arrival time when traveling on the route that is the search result of step ST4 and the designated arrival time acquired in step ST2 (step ST5). It is determined whether or not the margin time is a predetermined value or more (step ST6). If it is determined in step ST6 that the margin time is less than the predetermined value, the route in the fastest mode, which is the search result in step ST4, is displayed on the display unit 15 via the display control unit 23 (step ST7). . Thereafter, when a selection instruction for the displayed route is input via the input operation unit 14 (step ST8), the route search unit 22 instructs the display control unit 23 to provide route guidance based on the selected route, and route guidance. Is started (step ST9).

  On the other hand, if it is determined in step ST6 that the surplus time is equal to or greater than the predetermined value, the display control unit 23 is notified, and the display control unit 23 reads the arrival time designation mode setting item (see FIG. 3). At the same time, it is displayed on the display unit 15 (step ST10). When a desired setting is selected from the setting items displayed in step ST10 via the input operation unit 14 and necessary information such as a desired stay time at a stop-off point is input (step ST11), the route search unit 22 is selected. Performs route re-search in the arrival time designation mode based on the conditions input in step ST11, the destination acquired in step ST2, and the current position and current time acquired in step ST3, and displays the route that is the search result It displays on the display part 15 via the control part 23 (step ST12).

  In the route re-search in step ST12, the user preference data storage unit 31 sends user preference data, the map data storage unit 32 sends map data, and the facility data storage unit 33 sends facility data, according to the conditions input in step ST11. Alternatively, weather information and the like are acquired as appropriate via the communication unit 13.

  Thereafter, when a selection instruction for the displayed route is input via the input operation unit 14 (step ST13), the route search unit 22 instructs the display control unit 23 to provide route guidance based on the selected route, and route guidance. Is started (step ST9).

  After starting the route guidance, the current information acquisition unit 21 acquires the current position and current time from the clock 11 and the GPS 12 every predetermined time, and outputs them to the route search unit 22 (step ST14). Here, the interval at which the current position and the current time are acquired is set in advance. For example, 1/10 of the time taken to arrive at the destination (for example, 18 minutes if it takes 3 hours to the destination) The distance is set to 1/10 of the distance to the ground and a specific value such as “10 minutes”. This information acquisition interval can be changed as appropriate.

  The route search unit 22 refers to the current position and current time acquired in step ST14 and the destination and arrival specified time acquired in step ST2, and the destination and the current position do not match (destination ≠ current position). In addition, it is determined whether or not the current time does not reach the designated arrival time (arrival designated time> current time) (step ST15). If it is determined in step ST15 that the destination and the current position match, or the current time has reached the arrival designated time, the process is terminated.

  On the other hand, if it is determined in step ST15 that the destination does not match the current position and the current time has not reached the arrival specified time, the route search unit 22 obtains the current current newly acquired in step ST14. Based on the time and the current position, the estimated arrival time for the route for which the current route guidance is being performed is calculated (step ST16). It is determined whether or not the difference between the estimated arrival time calculated in step ST16 and the designated arrival time input by the user in step ST2 is a predetermined value or more (step ST17). The predetermined value used for the determination in step ST17 may be the same value as the value used for the determination of the margin time in step ST6 described above, or a different value may be newly set.

  If it is determined in step ST17 that the difference between the estimated arrival time and the arrival designated time is less than the predetermined value, the process returns to step ST14. On the other hand, if it is determined in step ST17 that the difference between the estimated arrival time and the designated arrival time is greater than or equal to a predetermined value, the route search unit 22 uses the condition input in step ST11 and the purpose acquired in step ST2. The route is re-searched in the arrival time designation mode based on the ground and the current position and current time acquired in step ST14, and the route as the search result is displayed on the display unit 15 via the display control unit 23 (step ST18). .

In the route re-search in step ST18, the user preference data storage unit 31 sends user preference data, the map data storage unit 32 draws map data, and the facility data storage unit 33 sends facility data, according to the conditions input in step ST11. Alternatively, weather information and the like are acquired as appropriate via the communication unit 13.
Thereafter, when a selection instruction for the displayed route is input via the input operation unit 14 (step ST19), the route search unit 22 instructs the display control unit 23 to provide route guidance based on the selected route. Is resumed (step ST20), and the process returns to step ST14.

  Note that the display of search results and the user input for the displayed route in step ST18 and step ST19 use a display method and an input method that take into account that the user is driving. For example, the display unit 15 includes a presentation method using voice, and the input operation unit 14 includes an input method using voice, a steering remote controller, or the like. As long as the user can recognize and input even while the user is driving, the present invention can be applied to configurations other than those described above.

  Further, in step ST12 and step ST18, when there are a plurality of routes that meet the conditions, the routes may be arranged and displayed in order from the closest arrival time.

  As described above, according to the first embodiment, when the arrival time designation mode is selected, the estimated arrival time of the route calculated by the normal route search (for example, the search in the fastest mode) is first calculated. When a margin time, which is the difference between the estimated arrival time and the designated arrival time, is calculated and the margin time is equal to or greater than a predetermined value, the destination is set within a predetermined time from the arrival designation time and closer to the arrival designation time. Since the route search unit 22 for re-searching the route arriving at the route is provided, route guidance on the route arriving at the destination at a time closer to the designated arrival time can be provided.

  Further, according to the first embodiment, the current information acquisition unit 21 that acquires the current position and the current time of the moving body every predetermined time after the start of the route guidance, and the estimated arrival time in the current route guidance are calculated. When the time difference between the estimated arrival time and the designated arrival time is greater than or equal to a predetermined value, the route search unit 22 for re-searching the route in the arrival time designation mode is provided, so that the time is always closer to the arrival designated time. It is possible to provide route guidance on the route arriving at the destination.

  Further, according to the first embodiment, in addition to the user selecting the arrival time designation mode, the user can select the arrival time designation mode setting item and input the desired stay time. It is possible to provide route guidance along a route that arrives at the destination at a time that is closer to and closer to the designated arrival time.

  Furthermore, according to this Embodiment 1, since it comprised so that the user preference data storage part 31 which memorize | stored the user preference beforehand was provided, the user can select the route search along a preference. This makes it possible to provide route guidance on a route that arrives at the destination at a time that is closer to the designated arrival time via a route or a stop point that meets the user's taste.

  In the above-described first embodiment, the configuration in which the route search unit 22 performs the route search in the arrival time designation mode based on the setting items set by the user has been described. However, the route search unit 22 does not require user input. May be configured to automatically perform a route search based on preset conditions.

  In the above-described first embodiment, the configuration in which the arrival time at the destination is designated is shown, but the route guidance may be performed by designating the arrival time at the stop point.

  In the present invention, any constituent element of the embodiment can be modified or any constituent element of the embodiment can be omitted within the scope of the invention.

  DESCRIPTION OF SYMBOLS 1 Navigation apparatus, 2 Route guidance processing part, 3 Storage area, 11 Clock, 12 GPS, 14 Input operation part, 15 Display part, 16 User preference input part, 21 Current information acquisition part, 22 Route search part, 23 Display control part 31 User preference data storage unit, 32 Map data storage unit, 33 Facility data storage unit.

Claims (4)

In a navigation device that guides a moving body to a destination by a searched route,
A map data storage unit for storing map data;
An input operation unit for receiving input of the destination and a designated arrival time at the destination;
A current information acquisition unit for acquiring a current position and a current time of the mobile body;
Based on the destination, the current position, the current time, and the map data, a route from the current position to the destination is searched, and an estimated arrival time at the destination on the searched route is calculated. A route search unit that
When the estimated arrival time of the searched route is earlier than the arrival specified time and the time difference between the two times is equal to or greater than a predetermined value, the route search unit is within the predetermined time from the arrival specified time and the arrival specified time A navigation device characterized by re-searching a route for the mobile body to arrive at the destination at a time closer to The current information acquisition unit acquires a current position and a current time of the moving body at predetermined intervals,
The route search unit uses the current position and the current time acquired at the predetermined interval to calculate an estimated arrival time at the destination on the most recently searched route, and the estimated arrival time is calculated as the arrival time. Each time the time difference between the two times is greater than or equal to a predetermined value earlier than the specified time, the route through which the mobile unit arrives at the destination is re-established within the predetermined time from the specified arrival time and closer to the specified arrival time. The navigation device according to claim 1, wherein a search is performed.   The route search unit re-searches a route having a longer required time than the most recently searched route under a search condition designated via the input operation unit among search conditions prepared in advance. The navigation apparatus according to claim 1 or 2.   The route search unit re-searches a route having a longer required time than the most recently searched route under a search condition designated via the input operation unit among search conditions according to user preferences prepared in advance. The navigation device according to claim 3.

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