JP2008139081A - Navigation apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation apparatus capable of providing reasons when the induction route is changed. <P>SOLUTION: A map 30 around one's own vehicle position is displayed on a display screen, and an own vehicle position mark 32 is displayed at the own vehicle position. A route-retrieved induction route 31a is overlaid and displayed on the map 30. When a VICS information receiving section of the navigation apparatus receives VICS information, and detects traffic congestion on the induction route 31a, route retrieval is performed again in order to avoid the traffic congestion. Then, the retrieved induction route 31b is displayed on the display screen, and a re-retrieval reason screen 33 showing the reason of re-retrieval "Reroute is performed due to traffic congestion" is displayed as a pop-up screen. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a navigation device that searches for a guidance route again when traffic jams or traffic restrictions occur on the guidance route searched for, or when a vehicle deviates from the guidance route.

A vehicle-mounted navigator that re-searches a guidance route based on dynamic information received from a vehicle information and communication system (VICS) while traveling is known as a conventional technique (for example, Patent Document 1).
JP-A-6-186049

  In the conventional in-vehicle navigator as in Patent Document 1, when the guidance route is re-searched and the guidance route is changed, the user does not present the reason for the guidance route change, so the user has a question about the guidance route change. There is.

(1) The navigation device of the invention of claim 1 is a current position detecting means for detecting the current position of the vehicle, a route searching means for searching for a guide route from the departure place to the destination, and display control for displaying the guide route on the monitor. Means, calculation control means for restarting the route search means to search for a new guidance route, storage means for storing the reason for searching for a new guidance route by the calculation control means, and notification means for informing the reason It is characterized by providing.
(2) The invention of claim 2 further includes detection means for detecting that the vehicle has deviated from the guidance route in the navigation apparatus according to claim 1, and the detection means detects that the vehicle has deviated from the guidance route. Then, the route search means is restarted by the arithmetic control means.
(3) The invention according to claim 3 is the navigation device according to claim 1, further comprising receiving means for receiving traffic information of any one of traffic jam, traffic regulation and traffic obstruction, on the guidance route by the receiving means. When one piece of traffic information generated at the time is received, the route search means is restarted by the arithmetic control means.
(4) According to a fourth aspect of the present invention, in the navigation device according to any one of the first to third aspects, the reason is notified by the notification means when the route search means is restarted.
(5) The invention of claim 5 is the navigation device according to any one of claims 1 to 3, further comprising instruction means for instructing notification by the notification means, and when the notification is instructed by the instruction means, The reason is notified by a notification means.
(6) The invention according to claim 6 relates to the navigation device according to any one of claims 1 to 5, wherein the storage means relates to a guidance route calculated by restarting the route search means by the calculation control means. Information is also stored, and the display control means displays a list of information on the guidance route stored in the storage means on the monitor.
(7) The invention according to claim 7 is characterized in that, in the navigation device according to claim 6, when information related to the guide route displayed in a list on the monitor is indicated, a map related to the guide route is displayed on the monitor. To do.

  According to the present invention, when a new guidance route is searched, the user is notified of the reason for searching for a new guidance route. Therefore, the user can know the reason for the guidance route change and has no doubt about the guidance route change.

  FIG. 1 shows a navigation device 1 according to an embodiment of the present invention. The navigation device 1 can perform a route search for a guidance route based on the VICS information transmitted from the VICS center. The VICS center is a base station that collects traffic congestion information, regulation information, and the like nationwide and distributes the information to each vehicle by FM multiplex broadcasting and beacons. The navigation device 1 includes a control circuit 11, ROM 12, RAM 13, current location detection device 14, image memory 15, display monitor 16, speaker 17, input device 18, VICS information reception unit 19, data storage unit 110, and disk drive 111. ing. The disk drive 111 is loaded with a DVD-ROM 112 in which map data is stored.

  The control circuit 11 includes a microprocessor and its peripheral circuits, and performs various controls by executing a control program stored in the ROM 12 using the RAM 13 as a work area. When the control circuit 11 performs a predetermined route search process based on the map data stored in the DVD-ROM 112, the processing result is displayed on the display monitor 16 as a guide route.

  The current location detection device 14 is a device that detects the current location of the vehicle. The current location detection device 14 includes a vibration gyro 14a, a vehicle speed sensor 14b, a GPS (Global Positioning System) sensor 14c, and the like. The vibration gyro 14a detects the traveling direction of the vehicle, the vehicle speed sensor 14b detects the vehicle speed, and the GPS sensor 14c detects a GPS signal from a GPS satellite. The navigation device 1 determines a map display range, a route search start point, and the like based on the current location of the vehicle detected by the current location detection device 14, and displays the current location on the map.

  The image memory 15 stores image data to be displayed on the display monitor 16. This image data includes road map drawing data and various graphic data, which are appropriately generated based on the map data stored in the DVD-ROM 112. The navigation device 1 can perform map display and the like by using the image data generated in this way.

  The disk drive 111 reads map data from the DVD-ROM 112. The map data includes map display data, route search data, and the like. The map display data and the route search data include road link information and node information stored in the map data. The map display data has map data of a plurality of scales from wide areas to details, and the scale of the display map can be changed according to a user request. The map data may be read from a recording medium other than the DVD-ROM 112, such as a CD-ROM or a hard disk.

  The display monitor 16 provides the user with various information such as a road map near the vehicle position as a screen display based on various information such as map data. The speaker 17 outputs sound for instructing the user to perform various input operations and for guiding the route. The input device 18 has operation keys for the user to set various commands, and is realized by a button switch on the operation panel, a hard switch around the panel, or the like. The user manually sets the destination by manually operating the input device 18 in accordance with an instruction on the display screen of the display monitor 16 or a voice instruction from the speaker 17.

  When the destination is set by the user, the navigation device 1 performs a route calculation from the current location detected by the current location detection device 14 to the destination based on a predetermined algorithm. The route obtained in this way (hereinafter referred to as a guidance route) is displayed on the screen separately from other roads by changing the display form, for example, the display color. Thereby, the user can recognize the guide route on the map on the screen. In addition, the navigation device 1 instructs the user in the direction of travel using a screen or voice so that the vehicle can travel according to the guidance route, thereby guiding the route of the vehicle.

  When the current position of the vehicle is detected by the current position detection device 14 and a deviation is detected from the guidance route of the vehicle, the guidance route that travels in the direction of departure from the vehicle and reaches the destination is re-searched. In this case, a guide route to the destination may be searched regardless of the deviated guide route, or a guide route that returns to the deviated guide route may be searched.

  The VICS information receiving unit 19 receives VICS information supplied from a VICS information center (not shown) and outputs it to the control circuit 11. The VICS information includes at least one of traffic jam information such as traffic jams and congestion, traffic fault information such as accidents and broken cars, and traffic regulation information such as road closures and closures. This VICS information is transmitted mainly by radio beacons installed on highways, optical beacons installed mainly on general roads, or FM multiplex broadcasting. Radio wave beacons and optical beacons transmit VICS information to vehicles passing near the installation site, and FM multiplex broadcasting covers a wider communication area. The navigation device 1 receives the VICS information transmitted by them by the VICS information receiving unit 19.

  If the received VICS information includes traffic jam information, traffic fault information, and traffic regulation information related to the road through which the guidance route passes, the guidance route to the destination is re-searched based on the VICS information. At this time, the route search is performed by weighting the distance of the congested section according to the degree of the congested traffic, or assuming that there is no road in the closed section.

  The data storage unit 110 is configured by a rewritable nonvolatile recording medium such as a flash memory or a hard disk, and stores data necessary for the function of the navigation device 1. Information stored in the data storage unit 110 is appropriately read and used by the control circuit 11. When the guidance route is re-searched, the data storage unit 110 stores information on the reason, date, time, and position of the guidance route being re-searched as history information of the re-route search. Reasons for re-searching the guidance route include deviation from the guidance route (out-of-route), congestion, congestion, accidents, and closed roads. As the position where the guidance route is re-searched, the latitude / longitude which is the position information of the vehicle detected by the current position detection device 14 when the search is re-searched can be used. The reroute search history information can be displayed as a list 20 on the display monitor 16 as shown in FIG.

  Next, reroute search reason display processing in the embodiment of the present invention will be described with reference to FIG. The navigation device 1 searches for the guidance route 31a. However, since a traffic jam has occurred on the route guidance, the navigation device 1 will be described as a search for the guidance route 31b.

  FIG. 3A is a diagram for explaining a display screen of the display monitor 16 displayed before the guidance route 31b is searched again. A map 30 around the vehicle position is displayed on the display screen, and a vehicle position mark 32 is displayed at the vehicle position. Then, the guidance route 31a searched for the route is displayed so as to overlap the map 30. When the VICS information receiving unit 19 of the navigation device 1 receives the VICS information and detects a traffic jam on the road through which the guidance route 31a passes, a route search is performed again to avoid the traffic jam. Then, as shown in FIG. 3B, the searched guidance route 31 b is displayed on the display screen, and the re-search reason screen 33 displaying the reason for the re-search “Rerouted due to traffic jam”. Is displayed as a pop-up screen. Thereby, the user can know the reason why the guidance route 31b is searched again.

  Next, reroute search reason display processing in the embodiment of the present invention will be described with reference to the flowchart of FIG. The processing of FIG. 4 is executed in the control circuit 11 by a program that starts when route guidance is started.

  In step S401, the current position detection device 14 detects the current position of the vehicle. In step S402, it is determined whether the vehicle has deviated from the guidance route. If it deviates, the determination in step S402 is affirmative, and the process proceeds to step S403. If not deviating, the determination in step S402 is negative and the process proceeds to step S405.

  In step S403, a calculation for re-routing a new guidance route is performed. In step S404, the reason for the route search calculation is displayed on the display monitor 16 as a pop-up screen. For example, when the vehicle re-searches the guidance route when the vehicle deviates from the guidance route, “Rerouted because the route is off” is displayed. When a route search is calculated based on VICS information, guidance corresponding to the information content is displayed. Then return.

  In step S405, the VICS information receiving unit 19 receives the VICS information. In step S406, based on the received VICS information, it is determined whether there is traffic jam information, traffic fault information, or traffic regulation information on the guidance route where the vehicle will proceed. If there is, step S406 is affirmed and the process proceeds to step S403. If not, a negative determination is made in step S406, and the process returns to step S401.

The navigation device 1 according to the above-described embodiment of the present invention has the following operational effects.
(1) When searching for a new guide route 31b, the user is notified of the reason for searching for a new guide route 31b. Therefore, the user can know the reason for the guidance route change and has no doubt about the guidance route change.

(2) When the vehicle deviates from the guidance route, a new guidance route is automatically searched, and an operation for searching for a new guidance route is not necessary, which is convenient.

(3) When any one of traffic information on traffic routes, traffic restrictions and traffic obstacles on the guidance route is received, a new guidance route is automatically searched. Therefore, the traffic information is received, the traffic information on the guidance route is confirmed, and if there is any one of traffic information on the guidance route, such as traffic congestion, traffic regulation and traffic obstacles, a new guidance route is searched. This is convenient because there is no need to perform an operation.

(4) When a new guide route is searched, the user is notified of the reason for searching for a new guide route, so that the user can know the reason before questioning the guide route change.

(5) Information on the reason for the newly searched guide route is stored in the data storage unit 110, and the stored information on the guide route is displayed as a list on the display monitor 16. Therefore, the user can know the reason for searching for a new guidance route in the past.

The above embodiment can be modified as follows.
(1) As shown in FIG. 5A, when the input device 18 is operated to select the history 21 from the reroute search history list 20 displayed on the display monitor 16, the history 21 is shown in FIG. 5B. Thus, the map 30 that displays the position of the vehicle when the reroute search is performed may be displayed. Even if it is not possible to determine the reason for the reroute search that the user wants to know from the date and time when the reroute search was performed, it is possible to determine from the map of the reroute search position, which is convenient.

(2) If traffic information including at least one of traffic jam information such as traffic jams and congestion, traffic fault information such as accidents and broken cars, and traffic regulation information such as traffic closures and closures can be acquired, the acquisition means can receive VICS information. It is not limited. For example, traffic information may be acquired from another information center using wireless means.

(3) The reason for searching for a new guidance route may be notified to the user by voice from the speaker 17.

(4) Although the reason is notified when the guidance route is searched again, the reason may be notified at the request of the user. For example, when a detour is searched and a new guidance route is displayed, a “reason” button may be displayed in the display screen, and the reason may be notified when the button is pressed.

  The above description is merely an example, and the present invention is not limited to the above embodiment.

The correspondence between the elements of the claims and the embodiments will be described.
The present location detection means of the present invention corresponds to the current location detection device 14, and the route search means and calculation control means correspond to the control circuit 11, the disk drive 111 and the DVD-ROM 112. The display control unit corresponds to the control circuit 11, and the storage unit corresponds to the data storage unit 110. The notification means corresponds to the display monitor 16, and the detection means corresponds to the control circuit 11 and the current location detection device 14. The receiving means corresponds to the VICS information receiving unit 19, and the instruction means corresponds to a “reason” button (not shown). In addition, the above description is an example to the last, and when interpreting invention, it is not limited to the correspondence of the component of said embodiment and the component of this invention at all.

It is a block diagram which shows the structure of the navigation apparatus by one Embodiment of this invention. It is a figure for demonstrating the list | wrist which displayed the historical information of the reroute search. FIG. 3A is a diagram for explaining the display screen of the display monitor displayed before the guidance route is searched again, and FIG. 3B is displayed when the guidance route is searched again. It is a figure for demonstrating the display screen of a display monitor. It is a flowchart for demonstrating the reason display process of the reroute search in one Embodiment of this invention. FIG. 5A is a diagram for explaining one selection of a history from a list of reroute search history, and FIG. 5B is a map display showing a position where the selected reroute search is performed. It is a figure for demonstrating.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 11 Control circuit 16 Display monitor 18 Input apparatus 19 VICS information receiving part 20 List 30 which shows the history of a reroute search Map 31a, 31b Guide route 32 Own vehicle position mark 33 Re-search reason screen 110 Data storage part

Claims (7)

Current location detection means for detecting the current location of the vehicle;
Route search means for searching for a guide route from the departure point to the destination,
Display control means for displaying the guidance route on a monitor;
Arithmetic control means for searching for a new guidance route by restarting the route search means;
Storage means for storing a reason for searching for a new guidance route by the arithmetic control means;
A navigation device comprising notification means for notifying the reason. The navigation device according to claim 1, wherein
Detecting means for detecting that the vehicle deviates from the guidance route;
The navigation apparatus according to claim 1, wherein when the detection means detects that the vehicle deviates from the guidance route, the route search means is restarted by the arithmetic control means. The navigation device according to claim 1, wherein
A receiving means for receiving traffic information of any one of traffic jams, traffic regulations and traffic obstacles;
The navigation apparatus according to claim 1, wherein when the one traffic information generated on the guidance route is received by the receiving means, the route search means is restarted by the arithmetic control means. The navigation device according to any one of claims 1 to 3,
The navigation device, wherein the reason is notified by the notification means when the route search means is restarted. The navigation device according to any one of claims 1 to 3,
Further comprising instruction means for instructing the notification by the notification means;
When the notification is instructed by the instruction means, the reason is notified by the notification means. The navigation device according to any one of claims 1 to 5,
The storage means also stores information on the guidance route calculated by restarting the route search means by the calculation control means,
The navigation apparatus characterized in that the display control means displays a list of information on the guidance route stored in the storage means on the monitor. The navigation device according to claim 6, wherein
A navigation device characterized in that when information related to the guide route displayed in a list on the monitor is indicated, a map related to the guide route is displayed on the monitor.

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