JP2011232167A - Navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation device for promptly presenting a user a route capable of rapidly arriving at a destination in consideration of traffic situations when a route search request is not made and when the time to arrive at the destination where the user frequently goes is likely to be later than usual.SOLUTION: A destination and a route to the destination are estimated based on travel history data including a travel date, a day type, a departure time, an arrival time, a departure place and a destination in response to ignition switch-on. When the estimated route is shifted, a predicted arrival time to the estimated destination is calculated based on calculation considering road traffic information. When the predicted arrival time is much later than usual arrival time specified based on the travel history data due to the occurrence of congestion in a congestion zone, a fastest route is searched and displayed as a recommended alternative route.

Description

  The present invention relates to a navigation apparatus that automatically searches for and displays a detour route that avoids traffic congestion.

  Conventionally, in a navigation apparatus, a user can register a recommended route searched by setting a destination. Therefore, when the starting point and the destination are the same, the user can search and determine from the registered route stored in the navigation device without searching for a recommended route.

  There is a case where the vehicle is repeatedly traveled such that the ignition switch of the host vehicle is turned on at the same day of the week and at the same time, and from the same departure place to the same destination, such as from home to work place. If such a repeated driving history is recorded, if the ignition switch of the host vehicle is turned on again at the same day of the week and at the same time based on the history information, the same destination is reached. It can be estimated that there is a high possibility of going. Therefore, there is a navigation device that estimates a destination when an ignition switch is turned on, automatically searches for and displays a route to the estimated destination, and performs route guidance (see, for example, Patent Document 1).

JP 2005-292029 A

  However, since the user normally travels repeatedly on the route to the estimated destination with the own vehicle, the necessity for route guidance to the estimated destination is not necessarily high. When route guidance is performed even though there is no need for route guidance, there are cases where it is troublesome for the user.

(1) The navigation device according to claim 1 is a storage unit that stores a movement history of a moving body, a destination estimation unit that estimates a destination with reference to the movement history, and a reference route that refers to the movement history. Means for reading out the reference arrival time to the destination by the traffic, traffic information collection means for collecting traffic information, time estimation means for estimating the estimated arrival time at the destination by the reference route based on the traffic information, estimated arrival When the time is delayed by a predetermined time or more than the reference arrival time, search means for searching for the fastest route arriving at the earliest destination based on the traffic information, and a recommended route based on the fastest route are displayed on the display. And a display means.
(2) The navigation device according to claim 7 is a storage means for storing a movement history of a moving body, a destination estimation means for estimating a destination with reference to the movement history, and a traffic information collection for collecting traffic information. Means for estimating the first estimated arrival time at the destination by the reference route based on the traffic information, search means for searching for the fastest route arriving at the earliest based on the traffic information, Time calculation means for calculating the second estimated arrival time to the destination by the fastest route, and when the first estimated arrival time is delayed by a predetermined time or more than the second estimated arrival time, based on the fastest route And a display means for displaying the recommended route on a display.

  According to the present invention, the route guidance to the destination to which the vehicle heads frequently is not normally performed, so it is not troublesome for the user. On the other hand, if there is a risk that the arrival time to the destination that you frequently travel will be significantly delayed than usual, or if there is the fastest route that can arrive at the destination earlier than the normal travel route, consider the traffic situation In addition, the fastest detour route to the destination can be quickly presented to the user.

It is a figure which shows the structure of the navigation apparatus of this Embodiment. It is a flowchart which shows a recommended detour route display processing procedure. It is a figure which shows driving history data. It is a figure which shows an example of a recommended detour route display.

  An embodiment in which a navigation device according to the present invention is mounted on a vehicle will be described with reference to FIGS. FIG. 1 is a diagram illustrating a configuration of a navigation device 100 according to the present embodiment. The CPU 110 is an arithmetic processing device that controls the entire navigation device 100, and the CPU 110 and its peripheral devices are connected to each other via a bus. The peripheral devices include a main storage device 115, an auxiliary storage device 140, a speaker 145, a display module 150 having a panel 155, and a communication device 160. The main storage device 115 has a work memory that is a work area of the CPU 110 and a program memory in which a control program is stored.

  In the CPU 110, signals from the current location detection device 120 and the user input device 130 are input. The current position detection device 120 is, for example, a GPS sensor, a gyro sensor, or a vehicle speed sensor, and can specify the current position and the current time by an input signal from the current position detection device 120. The user input device 130 is, for example, a touch panel, a push button switch around the panel, a remote control, and a joystick.

  The auxiliary storage device 140 is a storage device that stores road map data and POI (Point Of Interest) information used for navigation processing. The auxiliary storage device 140 is, for example, a hard disk drive, a CD or DVD storing road map data, a flash memory, other recording media, and a reading device thereof.

  The auxiliary storage device 140 also includes a database for travel history data to be described later.

  The road map data is information relating to the map, and includes map display data, route search data, and guidance data. The map display data is data for displaying the road and the background of the road map. The route search data is data including branch information that is not directly related to the road shape, and is mainly used when calculating a recommended route (route search). The guidance data is data including intersection name, road name, direction name, and direction guide facility information, and is used when the user is guided based on the calculated recommended route.

The display module 150 displays a screen on the panel 155 based on image data including characters and graphics output from the CPU 110, and the speaker 145 speaks based on audio data output from the CPU 110.

  The communication device 160 can receive road traffic information. The road traffic information is transmitted as digital data that can be processed by a program, and includes traffic jam information, regulation information, parking lot information, service area information, and parking area information. The regulation information includes lane regulation information, expressway ramp regulation information, and interchange regulation information.

  FIG. 2 is a flowchart showing a recommended detour route display processing procedure in the navigation device 100 of the present embodiment. This processing procedure is executed by the CPU 110, and is started, for example, when an ignition switch is turned on or a detour route automatic search mode selection setting input by the user. When the route search request to the destination by the user is input via the user input device 130, the execution of this processing procedure ends as will be described later. In step S205, the current location / current date / time detection process is started. Specifically, identification of the current position and the current time is repeatedly performed based on the input signal from the current position detection device 120 until the end of this processing procedure.

  In step S210, the destination is estimated through a database search for the current position, current date and time, and travel history data described below. For example, when the current position is home and the current date and time is 8:55 am on Thursday, November 5, 2009, the destination is estimated to be a company based on the travel history data. The destination is estimated using a known technique. When the travel history data includes trajectory data, the route to the estimated destination is specified based on the trajectory data. The normal arrival time T_0 to the estimated destination is specified based on the travel history data. For example, 9:45 am. In step S215, if an end event occurs, the process ends. If no end event occurs, the process proceeds to step S220. The end event is, for example, an input of a route search request based on an ignition off, a detour route automatic search mode selection cancel input by the user, or a destination input by the user.

  In step S220, it is determined whether or not the host vehicle after the start of travel has detected traveling on the estimated route. If the determination is negative, the process returns to step S210. If the determination is affirmative, in step S225, it is determined whether the communication device 160 has received road traffic information. If the determination is negative, the process returns to step S215. If the determination is affirmative, in step S230, an expected arrival time T_1 to the estimated destination via the estimated route is calculated in consideration of traffic information.

  In step S235, the expected time of arrival at the estimated destination via the estimated route is delayed by, for example, traffic congestion, a time obtained by adding time t (for example, 30 minutes) to normal arrival time T_0, or more. If so, the process proceeds to step S240. If the delay is less than time t, the process returns to step S215. In step S240, a search for a detour route is performed. In step S245, for example, the display module 150 performs control so that the display module 150 displays a screen on the panel 155 as a recommended bypass route, which is the route that can reach the estimated destination the earliest among the searched bypass routes.

  In step S250, it is determined whether or not the host vehicle has detected that the vehicle is traveling on a detour route. If the determination is affirmative, the determination process is repeated. If the determination is negative, it is determined in step S255 whether or not the host vehicle has passed the starting point of the detour route. If the determination is negative, the process returns to step S250. If the determination in step S255 is affirmative, the host vehicle is traveling on the estimated route or another route without traveling on the recommended bypass route. In step S260, the display module 150 is controlled to display the recommended bypass route. The process is cleared, and the process returns to step S215.

  FIG. 3 is a diagram showing travel history data. In step S210 of FIG. 2, the destination is estimated through a database search for travel history data. The travel history data includes at least a day type indicating a day type such as a travel day, a weekday, or a holiday, a departure time, an arrival time, a departure place, and an arrival place, and is collected every time the host vehicle travels. 140.

  The travel date, departure time, arrival time, departure location, and arrival location are specified based on an input signal from the current location detection device 120 to the CPU 110 when traveling. The departure location is, for example, the position of the host vehicle detected by the current location detection device 120 in response to an ignition switch-on or a travel history collection mode selection setting input by the user. The arrival location is, for example, the position of the host vehicle detected by the current location detection device 120 when the ignition switch is turned off or the travel history collection mode selection cancellation input is made by the user.

  The day type is specified based on the calendar function of the CPU 110. The day type may represent a detailed type such as weekdays (general), weekdays (days before holidays), holidays (first day of consecutive holidays), holidays (days during consecutive holidays), holidays (last days of consecutive holidays), and days of the week. May be included.

  FIG. 4 is a diagram illustrating an example of a recommended detour route display screen. This screen is displayed on the panel 155 in step S245 of FIG. In FIG. 4, in addition to the recommended detour route, a traffic jam section corresponding to a part of the estimated route to the estimated destination specified in step S210 in FIG. The estimated route is not displayed. Only a portion of the recommended detour route that does not overlap with the estimated route is highlighted. For the traffic jam section, road traffic information related to the traffic jam such as a specific place name, a traffic jam distance, and a time required for passing through the traffic jam section is displayed.

  In the area on the right side of the screen, the current time and the estimated destination are displayed, and the estimated arrival time and the distance from the current location to the destination are displayed for each of the estimated route and the recommended detour route. The expected arrival time in the estimated route is the above-described expected arrival time T_1. The expected arrival time on the recommended detour route is calculated by taking into consideration the road traffic information, the expected arrival time at the estimated destination by the recommended detour route.

The navigation device 100 according to the present embodiment described above has the following operational effects.
(1) The destination is estimated based on the travel history data, and the recommended detour route is displayed on the screen when the estimated arrival time at the estimated destination by the estimated route is a delay of time t or more than usual. As a result, if the user is not searching for a route to the destination, he / she can receive a recommended detour route without performing any operation input, etc. is there.

(2) When driving on the estimated route or other route without following the recommended detour route screen display, the recommended detour route screen display is cleared. As a result, the screen display returns to the state before the recommended bypass route is displayed, so that the user is not bothered by the screen display of the recommended bypass route, and convenience is improved.

---- Modified example ---
The above-described embodiment of the present invention can be modified as follows.
(1) In the description of FIG. 2 described above, in step S210, the estimated route to the estimated destination is specified based on the trajectory data included in the travel history data. However, the estimated route to the estimated destination may be searched and specified through route calculation. Further, a route registered in advance may be searched and specified.

(2) In the description of FIG. 2 described above, after the host vehicle starts running in step S220, a detour route search from the current location to the estimated destination is performed in step S240. However, it is good also as searching for a detour route based on the road traffic information which communication apparatus 160 received as Step S240 after Step S210. At this time, if the determination in step S235 is affirmative, the process proceeds to step S245.

(3) In the description of FIG. 2 described above, when the communication device 160 receives road traffic information in step S225, the estimated arrival time T_1 to the estimated destination via the estimated route is considered in consideration of the received road traffic information. In step S230, the calculation is performed. However, regardless of the reception of traffic information, the estimated arrival time T_1 at the estimated destination may be periodically calculated and updated.

(4) In the description of FIG. 2 described above, in step S235, it is determined whether or not the expected time of arrival at the estimated destination via the estimated route is delayed by time t or more. In this case, as the time t, a predetermined value may be fixedly set in advance, or an arbitrary value designated by the user may be set. Further, based on the road traffic information received by the communication device 160 in step S225, it may be determined in step S235 whether the estimated route includes a closed section.

(5) In the description of FIG. 2 described above, in step S245, the display module 150 displays a recommended bypass route on the panel 155 on the screen. In addition to this screen display, screen output to the panel 155 for route guidance or voice output to the speaker 145 for route guidance may be performed.

(6) In the description of FIG. 2 described above, if it is determined in step S255 that the vehicle has not passed the starting point of the detour route, the process returns to step S250. However, if the communication device 160 has received new road traffic information, the process may be returned to step S225.

(7) In the description of FIG. 2 described above, the expected arrival time T_1 calculated in step S230 in consideration of road traffic information is delayed by t or more than the arrival time T_0 calculated in step S210 without considering traffic information. In step S235, whether or not to perform the determination is determined. If the determination is affirmative, the bypass route search and the recommended bypass route display are performed. However, it may be as follows. That is, in step S210, based on the estimated destination and the estimated route specified by the destination estimation through the search of the travel history database included in the auxiliary storage device 140, the estimated arrival time at the estimated destination immediately considering the road traffic information. T_1 is calculated. At the same time, the fastest route that can arrive at the estimated destination in the shortest time is specified, and the expected arrival time T_2 to the estimated destination by the fastest route is calculated in consideration of the road traffic information. When a positive determination is made that T_1 is delayed for time t or more than T_2, the fastest path is displayed on the screen.

(8) In the description of FIG. 2 described above, the recommended detour route searched in step S240 is displayed on the screen. However, when the recommended detour route is equal to the estimated route, the process may be returned to step S215 without displaying the recommended detour route on the screen.

(9) In the description of FIG. 3 described above, the arrival location is, for example, the position of the host vehicle detected by the current location detection device 120 when the ignition switch is turned off or the travel history collection mode selection release input is input by the user. It was. However, for example, in the case of temporary parking for a drop-in to a convenience store. It is also good not to.

(10) In the description of FIG. 3 described above, the travel history data is collected every time the host vehicle travels and is stored in the auxiliary storage device 140. For example, when the remaining amount of storage capacity is small when a new travel history is stored in the auxiliary storage device 140, the oldest travel history is deleted to secure a free space, and then the new travel history is stored in the main storage history. It may be included in the travel history data.

(11) In the description of FIG. 4 described above, road traffic information related to the traffic jam is displayed for the traffic jam section. Each time the communication device 160 receives the road traffic information, the display of the road traffic information regarding the traffic jam may be updated.

(12) In the description of FIG. 4 described above, the estimated route is not displayed, but the estimated route may be displayed together with the traffic jam section.

(13) In the above description of the present embodiment and modifications, one embodiment in which the present invention is applied to the navigation apparatus 100 has been described. However, PND (Personal Navigation Device), PDA (Personal Digital Assistant), mobile phone The present invention may be applied to portable personal computers and portable game machines.

  Each embodiment and each modification described above may be combined. In addition, the present invention is not limited to the device configuration in the above-described embodiment unless the characteristic functions of the present invention are impaired.

100 navigation device 110 CPU
115 Main storage device 120 Current location detection device 130 User input device 140 Auxiliary storage device 145 Speaker 150 Display module 155 Panel 160 Communication device

Claims (8)

Storage means for storing a movement history of the moving body;
Destination estimation means for estimating a destination with reference to the movement history;
Read means for reading a reference arrival time at the destination by a reference route with reference to the movement history;
Traffic information collecting means for collecting traffic information;
Time estimation means for estimating an estimated arrival time at the destination by the reference route based on the traffic information;
When the estimated arrival time is delayed by a predetermined time or more than the reference arrival time, based on the traffic information, search means for searching for the fastest route to arrive at the destination earliest,
A navigation device comprising display means for displaying a recommended route on a display based on the fastest route. The navigation device according to claim 1, wherein
The moving body is a vehicle,
The destination estimating means estimates the destination by referring to the movement history based on time information and calendar information indicating a time point when the ignition switch of the vehicle is turned on. Navigation device. The navigation device according to claim 1 or 2,
The recommended route displayed on the display is a section different from the reference route in the fastest route. The navigation device according to any one of claims 1 to 3,
When the traffic information collecting means collects the traffic information,
The time estimation means newly estimates the estimated arrival time,
The search means newly searches for the fastest route,
When the estimated arrival time newly estimated by the time estimation unit is delayed by a predetermined time or more than the reference arrival time, the display unit is configured to display the display based on the fastest path newly searched by the search unit. A navigation device, wherein the recommended route is newly displayed on a device. In the navigation apparatus of any one of Claims 1-4,
The display means displays the recommended route on the display, and then stops displaying the recommended route on the display when the moving body does not enter the recommended route. . The navigation device according to claim 1, wherein
The navigation device characterized in that the display means does not display the estimated route on the display. Storage means for storing a movement history of the moving body;
Destination estimation means for estimating a destination with reference to the movement history;
Traffic information collecting means for collecting traffic information;
Time estimating means for estimating a first estimated arrival time at the destination by the reference route based on the traffic information;
Based on the traffic information, search means for searching for the fastest route to reach the destination earliest,
Time calculating means for calculating a second estimated arrival time at the destination by the fastest route;
When the first estimated arrival time is delayed by a predetermined time or more than the second estimated arrival time, the display device includes display means for displaying a recommended route on a display based on the fastest route. Navigation device. The navigation device according to any one of claims 1 to 7,
Request input means for inputting a route search request to the destination;
When the route search request is input, the display means does not display the recommended route on the display.

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