JP5828218B2 - Arrival time prediction system - Google Patents

Description

  The present invention relates to an arrival time prediction system that can predict an arrival time to a destination.

  If the driver operates the phone while the car is driving, attention to driving may be distracted and an accident may occur. For this reason, in order to mitigate the dangers associated with incoming calls and calls while the car is running, when the call arrives while the car is running, the caller can call the other party (driver ) Is now in operation.

Japanese Patent Laid-Open No. 11-4190

  Therefore, when the driver heads to the caller's home, it can be inferred that the driver is driving toward the destination, but can know if it is actually heading for the destination and when it will arrive. Can not. For this purpose, the caller has to repeatedly call the driver after an appropriate time. It is also possible to record the estimated arrival time in advance and play it back when the call arrives. However, the estimated arrival time may vary greatly depending on the state of the guide route to the destination, or a caller who is not set as the destination will receive an incoming call. On the other hand, the same message may be played back and cause confusion. In particular, with regard to electric vehicles, it is necessary to arrive at the charging stand before the electric energy stored in the battery runs out and to charge the mounted battery. Or the estimated remaining time of the battery greatly depends on the remaining charge amount of the battery.

  The present invention has been made in view of such circumstances, and not only can predict and know the destination arrival time at the destination, but also includes a transit point indicating the driving situation and destination arrival prediction time information. It is an object of the present invention to provide an arrival time prediction system in which time information can be easily grasped at the destination.

The present invention provides a navigation device having a current position detection unit for detecting a current position of the host vehicle, a destination setting unit for setting a destination, a road map database storing the destination information and road map information, and the navigation In the arrival time prediction system comprising a portable terminal capable of information communication with the device, the navigation device is configured to calculate a guide route and a distance from the current position detected by the current position detection unit to the destination in the road map database road A route search unit that searches and calculates on map information, a route point in the guide route to the destination, a route point setting unit that sets a stay time at the route point, and the destination based on the guide route Estimated time information for calculating estimated arrival time, calculating predicted arrival time of the transit point, and estimated departure time of the transit point, and creating estimated time information And a communication interface for transmitting the destination information and the estimated time information to the portable terminal, wherein the portable terminal receives the destination information and the estimated time information from the navigation device. An information receiving unit; storage means for storing the destination information and the estimated time information received by the information receiving unit; information of a transmission source when receiving a call; and destination information stored in the storage means; And a response unit that automatically returns the assumed time information to the transmission source when it is determined by the determination unit that the two vehicles match. a vehicle capable, the road map database stores charging station information including the position information of the charging station, the waypoint setting unit, the charging station as the stopover And a maximum charging time per one charging station, and a new amount of charge required in the route to the destination when traveling on the guide route searched by the route search unit. Calculating the required number of charges by dividing the amount of charge by the amount of power that can be charged in the maximum charging time per place of the charging station, and searching for the charging stations for the required number of times of charging. And

According to the present invention, in the navigation device, the guide route and the distance from the current position detected by the current position detection unit to the destination are searched and calculated on the road map information in the road map database in the route search unit, and the estimated time An information creation unit calculates an estimated arrival time of the destination based on the guide route, creates estimated time information, and transmits the destination information and the estimated time information to the mobile terminal through a communication interface. In the portable terminal, the destination information and the estimated time information are received from the navigation device by an information receiving unit, and the destination information and the estimated time information received by the information receiving unit are stored in a storage unit. The determination means determines whether or not the information of the transmission source when the incoming call is received and the information of the destination stored in the storage means, and if the determination means determines that they match, the response means determines the expected time Information is automatically returned to the sender. Therefore, it is possible to provide an arrival time prediction system capable of notifying a sender of the destination that requires estimated time information including the destination arrival time.

According to the present invention, the navigation device has a waypoint setting unit for setting a waypoint in the guide route to the destination, and the estimated time information creation unit uses the predicted arrival time of the destination, the waypoint The estimated arrival time is calculated and the estimated time information is created, so that not only can the destination arrival time be predicted and known at the destination, but also the driving situation such as arrival schedule and departure schedule of the waypoint Can be provided at the destination.

According to the present invention, the transit point setting unit sets the stay time at the transit point, and the estimated arrival time of the destination, the estimated arrival time of the transit point, and the estimated departure time of the transit point in the assumed time information creation unit Since it is configured to calculate and create estimated time information, not only can the destination arrival time be predicted and known at the destination, but also the arrival and departure schedules of the destination and waypoints, and further at the waypoints. It is possible to provide an arrival time prediction system capable of easily grasping a traveling state such as a staying time at the destination.

According to the present invention, the host vehicle is a vehicle that can be driven by a motor, and charging station information including position information of the charging station is stored in the road map database, and the waypoint setting unit is searched by the route search unit. When the vehicle travels on the guided route, it has a charge amount calculating means for calculating a newly required charge amount in the route to the destination, and a charging station close to the guide route searched by the route search unit is provided. Since it is configured to set the stay time at the charging station based on the charge amount calculated by the charge amount calculation means, it is only possible to predict and know the destination arrival time of the electric vehicle at the destination In addition, an arrival time prediction system that makes it possible to easily grasp the travel conditions such as arrival schedules and departure schedules of newly required transit points in the route to the destination and destination of the electric vehicle at the destination. It is possible to provide a Temu.

According to the present invention, the navigation device and the portable terminal constantly update the assumed time information, and the response means of the portable terminal is configured such that the time between the assumed time information returned to the caller and the updated assumed time information is a predetermined time. When the above change has occurred, since the new estimated time information is transmitted to the sender, the updated estimated time information can be used to determine the accurate travel status of destinations and waypoints such as arrival schedules and departure schedules. An arrival time prediction system that can be easily grasped at the destination can be provided.

It is a block diagram which shows the structure of the arrival time prediction system of the 1st Embodiment of this invention. It is explanatory drawing which shows the charging facility searched with the arrival time prediction system of the 1st Embodiment of this invention. It is a flowchart which shows the guidance operation | movement of the charging facility by the arrival time prediction system of the 1st Embodiment of this invention. It is explanatory drawing which shows an example of the assumption time table by the arrival time prediction system of the 1st Embodiment of this invention.

Hereinafter, a first embodiment of the present invention will be described.
FIG. 1 is a block diagram showing the configuration of the arrival time prediction system of this embodiment. This arrival time prediction system includes a navigation device 1000 mounted on an electric vehicle, a VICS (Vehicle Information and Communication System) terminal 200 that outputs road traffic information to the navigation device 1000, and destination information, charging between the navigation device 1000 When sending and receiving timetable information including transit point information such as facilities, estimated arrival time information, estimated departure time, etc., and receiving a mail or an incoming call from a communication device such as a mobile terminal or a fixed telephone on the destination side, The mobile terminal 21 is provided with a mobile terminal 21 that automatically responds to a communication device such as a mobile terminal or a landline telephone and notifies timetable information such as the predicted arrival time at the destination.
The navigation device 1000 includes a GPS receiving unit 1, a current position detecting unit 2, a route searching unit 3, an assumed time information creating unit 301, a destination setting unit 304, a waypoint setting unit 305, an input unit 4, an output unit 5, and a road map. A database 6, a battery management unit 8, a display control unit 11, and a communication interface 12 are provided.
The GPS receiver 1 receives time information carried on radio waves transmitted from GPS satellites.
The current position detection unit 2 calculates and detects the latitude, longitude, and height of the position at which the time information is received based on the time information received by the GPS reception unit 1.
The route search unit 3 includes a destination setting unit 304 that selects a destination from registration information, facilities, and telephone numbers read from the road map database 6 and sets a destination, and provides a guide route from the current position to the destination. A search is performed based on the road map information read from the road map database 6, and a distance on the guide route from the current position to the destination is calculated.
The estimated time information creation unit 301 calculates the estimated arrival time of the destination based on the guide route to the destination, and automatically creates the assumed time table.
The waypoint setting unit 305 sets the staying time at the waypoint and the waypoint in the searched guide route, and the route search unit 3 re-searches the guide route based on the set waypoint and the stay time. . Note that the route search unit 3 may search for the guidance route by setting the destination and the stay time at the route setting unit 305 at the same time as setting the destination by the destination setting unit 304.
For example, in the case of an electric vehicle, the position of each charging station corresponding to the required number of charging times as a transit point on the guide route, the distance between the charging stations, and the average speed when traveling between the charging stations on the guide route (40 Km / h for general roads, 80 Km / h for highways), and information including the charging time at each charging station, the estimated arrival time at the destination, and the estimated arrival time at each charging station And the estimated departure time are calculated, and an assumed timetable is automatically created. More specifically, the assumed time table created by the assumed time information creating unit 301 includes destination information, waypoint information, predicted arrival time information, and predicted departure time information.
More specifically, the waypoint setting unit 305 includes a charge amount calculation unit 7, a charge count calculation unit 9, and a charging facility search unit 10.
The charge amount calculation means 7 calculates the total charge amount V1 to be charged in order for the electric vehicle to travel to the destination on the premise that the remaining charge amount is secured in the battery when the destination arrives. This remaining charge amount is the remaining charge amount of the battery at the time of arrival at the destination input and set in advance from the input unit 4.
The number-of-charges calculation means 9 calculates the number of times that charging is required at a charging station, which is an intermediate waypoint, necessary for traveling to the destination. The calculation of the number of times of charging is performed as follows. First, the “total remaining battery charge V1 according to the distance from the current location required to travel to the destination” calculated by the charge amount calculation means 7 is added to the “remaining battery capacity upon arrival at the destination”. Is obtained, and the remaining battery capacity is subtracted from this battery capacity to obtain the amount of battery charge required to travel to the destination. Then, the battery charge amount is divided by the charge amount that can be charged to the battery per one charging station calculated from the maximum charging time Tc per one charging station input from the input unit 4, When the charging stations around the guide route are equally installed, the necessary number of charging times Cc necessary to travel to the destination is calculated.
The charging facility search means 10 divides the “distance of the guide route from the current position to the destination” by the calculated required number of charging times Cc, so that charging stations on or around the guide route The distance between the virtual charging stations is calculated within the range of the calculated virtual charging station distance LL from the destination, and when returning from the destination to the current position on the guide route The charging station farthest from the destination is searched by accessing the road map database 6 as the final charging station to be searched last. Further, a road map with a charging station that is farthest from the base point when following the guide route in the direction of the current position within the range of the distance LL between the virtual charging stations from the final charging station as the next base point Search by accessing the database 6. The search for the charging station as the base point searches for charging stations at least for the calculated number of charging times.
The waypoint setting unit 305 sets a charging station as a waypoint on the guide route to the destination set by the destination setting unit 304 as described above. Further, when the route setting unit 305 travels on the guide route searched by the route search unit 3, the charge amount calculation unit 7 calculates a new charge amount required in the route to the destination, and the route search is performed. It is possible to set a charging station close to the guidance route searched by the unit 3 as a transit point, and set the staying time at the charging station based on the charging amount calculated by the charging amount calculation means 7. .
The assumed time information creation unit 301 includes a correction unit 303, and the assumed time information in the created assumed time table indicates that the expected time information is updated when a delay in arrival time due to traffic jams or a change in stay time at a transit point occurs. Update.

The input unit 4 includes a touch panel device that captures various input data to a navigation device such as a destination, a priority road, and a waypoint, and a maximum charge per charging station required by the waypoint setting unit 305. Various setting data input from the display including the time Tc, the remaining charge amount that should remain in the battery of the host vehicle upon arrival at the destination, or the estimated travel distance after arrival is fetched.
The output unit 5 outputs various operation screens for operating the navigation device to the display, and displays and outputs the current position, the destination, the guidance route, and the like together with the road map. Further, the charging station around the guide route from the current position to the destination searched by the charging facility searching means 10 is output to the display together with the road map.

  The road map database 6 is composed of a recording medium such as a hard disk or a DVD, and stores a road map of the country including charging station information such as position information of a charging station as a transit point and distance information thereof as road map information. Read out as needed.

  The battery management unit 8 performs battery management including calculation of the current remaining capacity of the battery installed in the electric vehicle, control of the charging current and discharging current of the battery, and the like. The battery information including the remaining amount of energy stored in the battery of the electric vehicle is detected, and the battery information is transmitted to and received from the navigation device 1000.

The display control unit 11 performs display control of various data on the display in the output unit 5 and corresponds to each charging station searched by the charging facility searching unit 10 by a charging station input in advance from the input unit 4. Is displayed on charging time output units 411, 412, 413, and 414 shown in FIG. 2 to be described later.
The communication interface 12 transmits, to the portable terminal 21 by wireless communication, assumed time information indicating the traveling state of the electric vehicle including destination information, waypoint information, predicted arrival time information, and predicted departure time information.

  The VICS terminal 200 receives road traffic information such as traffic congestion and traffic regulation in real time, outputs the received road traffic information to the navigation device 1000, and displays the road traffic information such as traffic regulation in characters and graphics.

The portable terminal 21 includes a wireless communication unit 22, a control unit 23, a storage device 24, and the like. The wireless communication unit 22 receives destination information, waypoint information, predicted arrival time information, predicted departure time information, and the like in the assumed timetable transmitted from the communication interface 12 of the navigation device 1000. Furthermore, it is possible to make a call to the other party of the incoming call, e-mail, estimated arrival time, and callable time. The storage device 24 is route information, destination information, and contact information of an assumed timetable transmitted from the navigation device 1000 via a communication function such as the wireless communication unit 22 for performing communication with the navigation device 1000. , A data table TBL for storing predicted arrival time information at the waypoint, predicted departure time information at the waypoint, predicted arrival time at the destination, application software 31 and the like.
Route information, destination information, contact information, estimated arrival time information at the transit location, predicted departure time information at the transit location, and predicted arrival time information at the destination stored in the data table TBL. When the navigation apparatus 1000 updates various types of information, the mobile terminal 21 also updates.
The application software 31 communicates with the navigation apparatus 1000 via the route information, the destination information, the contact information, the predicted arrival time information of the route, the predicted departure time information of the route, and the predicted arrival of the destination. Communication software for transmitting and receiving time information, via-point information of the received expected timetable, destination information, contact information, predicted arrival information at a transit point, predicted departure time information at a transit point, predicted arrival at a destination Time information, contact information input from the keyboard is set in the data table TBL, and route information, destination information of the assumed time table set in the data table TBL for incoming calls from the destination side, The contact information, predicted arrival time information at the waypoint, predicted departure time information at the waypoint, and predicted arrival time information at the destination are automatically answered by voice. It is to achieve the ability to reply with respect to the destination side by e-mail. In this case, the contact information is a telephone number on the destination side, and may be input by operating the keyboard of the portable terminal 21 as well as information transmitted from the navigation device 1000.
The control unit 23 of the portable terminal 21 includes a determination unit 231, a response unit 232, and an information reception unit 233. The determination means 231 determines whether or not the other party's telephone number when there is an incoming call matches the contact information set in the data table TBL in advance. The response means 232, when judged to be coincident by the judgment means 231, to the contact set in the data table TBL, the transit point information, destination information, contact information, and arrival of the transit point in the assumed timetable The predicted time information, the predicted departure time information of the waypoint, and the predicted arrival time information of the destination are automatically responded by voice or returned to the destination side of the contact by e-mail. The response means 232 further transmits the updated new estimated time information to the transmission source when the time between the estimated time information returned to the transmission source and the updated estimated time information changes by a predetermined time or more. The information receiving unit 233 sends via point information, destination information, contact information, predicted arrival time information at the intermediate point, predicted departure time information at the intermediate point, predicted arrival time at the destination, etc. via the wireless communication unit 22. Received from the navigation device 1000.

FIG. 2 is an explanatory diagram showing charging facilities searched by the navigation apparatus 1000 of the arrival time prediction system of this embodiment.
FIG. 3 is a flowchart showing a search for a charging facility by the navigation device 1000 of the arrival time prediction system of this embodiment.
Next, a search for a charging facility executed by the navigation apparatus 1000 of the arrival time prediction system of this embodiment will be described with reference to the flowchart shown in FIG.
First, from the input unit 4 of the navigation apparatus 1000, which is input by the driver or passenger of the electric vehicle, the destination, the remaining battery charge upon arrival at the destination, the estimated travel distance after arrival at the destination, and the charging stand Various pieces of information such as the maximum charging time Tc per place are captured (step S1). The destination input at this time can be selected from registration information provided in the navigation apparatus 1000 or can be performed by the destination setting unit 304 that sets the destination from the facility, telephone number, or the like. When this destination is set, and further, via route designation, priority road designation, and the like are input, the route search unit 3 of the navigation device 1000 finds a guide route from the current position of the host vehicle to the set destination. A search is performed based on the road map information stored in the road map database 6, and the road map read from the road map database 6 and the searched guide route are output to the display of the output unit 5.

Subsequently, a transit point is set by the transit point setting unit 305. First, the charge amount calculation means 7 calculates a total charge amount V1 to be charged for traveling to the destination on the assumption that the remaining charge amount is secured when the destination arrives (step S2). This total charge amount V1 is calculated as follows. The distance L (Km) of the guide route to the destination searched by the route search unit 3, the amount of energy x (Wh) when the battery mounted on the host vehicle is fully charged, and the battery is fully charged From the distance that can be traveled in the state, the travel distance per unit energy of the charge amount stored in the battery, that is, the power consumption y becomes clear.
Further, the amount of battery energy required to travel to the destination, that is, the amount of battery charge a (Wh) required to travel to the destination, is obtained from the distance L / electricity cost y of the guide route to the destination. . Then, when the battery charge amount and the remaining charge amount that are desired to remain at the time of arrival at the destination are n (Wh), and the charge amount currently stored in the battery of the host vehicle is p (Wh), The total amount of charge V1 required to travel to the ground is “the amount of charge a (Wh) required to travel to the destination” + “the amount of battery charge n (Wh) that is desired to remain in the battery when the destination arrives. "-" It is calculated | required from the charge amount p (Wh) currently stored in the battery of the own vehicle.
“Charging amount n (Wh) to be left in the battery upon arrival at destination” is the remaining amount of charge upon arrival at the destination input in step S1 or the estimated travel distance after arrival at the destination q (Km) As “scheduled travel distance q after arrival at destination” / electric cost y. When there is no need for charging, the assumed time information creation unit 301 creates an expected time table for only the estimated arrival time at the destination based on the searched guide route without setting a waypoint.

  Subsequently, the total charging amount V1 required for traveling to the determined destination is calculated from the charging station one converted from the maximum charging time Tc per charging station inputted from the input unit 4 in the step S1. Divide by the amount of charge that can be charged to the battery at each location, and the charging stations are evenly installed around the guide route to the destination, and the charging time is allocated evenly to each charging station, traveling to the destination The required number of charge times Cc necessary for the calculation is calculated (step S3).

  The charging facility search means 10 divides the “distance of the guide route from the current position to the destination” by the calculated required number of charging times Cc, so that a virtual interval between charging stations around the guide route is obtained. That is, it is calculated as the distance LL between virtual charging stations (step S4), and is within the range of the calculated distance LL between virtual charging stations between the charging stations from the destination, and is located on the guide route from the destination The charging station that is farthest when tracing in the direction of is searched by accessing the road map database 6 (step S5). In this case, the charging station SS2 shown in FIG. 2 is searched.

  Further, the charging station SS2 is used as a final charging station for final guidance on the guidance route, and the virtual charging station distance LL is traced on the guidance route in the direction of the current position with the final charging station as a base point. A charging station that is farthest from the base point on or near the guide route within the range LL between charging stations is searched by accessing the road map database 6 (step S6). In this case, the charging station SS4 shown in FIG. 2 is searched.

  Subsequently, it is determined whether or not a charging station corresponding to the required number of charging times obtained in step S3 has been searched (step S7). Is replaced with the charging station searched in step S6 (step S8), and the process returns to step S6. As a result, in step S6, this time, the charging station SS4 is used as a base point to follow the guide route in the direction of the current position by the distance LL between the virtual charging stations, and the guiding path within the range of the distance LL between the virtual charging stations at this time. A search is made by accessing the road map database 6 for the charging station farthest from the charging station SS4 as the base point above or in the vicinity thereof. In this case, the charging station SS5 shown in FIG. 2 is searched.

  In this way, when searching for the charging stations for the required number of charging times obtained in step S3 is completed, the searched charging stations SS2, SS4, SS5, SS7 are read from the road map database 6 on which the guidance route is displayed and output. On the road map, as shown in FIG. 2, it is output in a display form distinguishable from other charging stations (step S9).

  The charging stations for the necessary number of charging times searched as described above are displayed on the road map on which the guidance route is displayed and output as shown in FIG. In the example shown in FIG. 2, the guide route from the current position to the destination is displayed and output on a road map, and is further searched by the charging facility search means 10 for the required number of charging times on or near the guide route. The charging stations SS2, SS4, SS5, and SS7 are output in a display form that can be distinguished from other charging stations. Further, the charging stations SS2, SS4, SS5, SS7 have a maximum charging time Tc per charging station input in step S1, for example, “20 minutes” so that the corresponding relationship with each charging station becomes clear. "Is displayed on the charging time output units 411, 412, 413, and 414 by the display control unit 11.

FIG. 4 shows an example of an assumed time table in the case of traveling to the destination through the guide route while charging at each charging station via the charging stations for the required number of times searched as shown in FIG. It is explanatory drawing. In the example illustrated in FIG. 4, the assumed time table created first by the assumed time information creation unit 301 is indicated by a thick solid line, and the assumed time table updated by the correcting unit 303 is indicated by a one-dot chain line.
The assumed timetable shown by the thick solid line in FIG. 4 is a guide route to the destination shown in FIG. 2, the position of each charging station for the required number of charging times on the guide route, the distance between each charging station, A timetable including an average speed when traveling between the charging stations on the guide route, a required time between the charging stations when traveling between the charging stations at the average speed, and a charging time at each charging station It is automatically created by the assumed time information creation unit 301 using the creation information.
From the assumed timetable created by the assumed time information creation unit 301, predicted arrival time information T1, T3, T5, T7 to each charging station of the electric vehicle traveling on the guide route to the destination, predicted departure time information T2, T4, T6, T8, the estimated arrival time T9 to the destination, and the like become clear.

And the estimated arrival time of the charging station, which is clarified from the estimated time table created by the assumed time information creating unit 301, is corrected using an error from the actual time when the electric vehicle arrives at the charging station. Updated by 303. This update is performed every time an electric vehicle arrives at each charging station. The predicted departure time of the charging station is updated by the correcting unit 303 based on the charging time at the charging station and the updated estimated arrival time at the charging station.
In the example of the assumed timetable indicated by the one-dot chain line in FIG. 4, the estimated arrival time T3 to the charging station SS5 is a time T11 that is 10 minutes earlier than the predicted time. In this case, “10 minutes” is an error between the actual time when the electric vehicle arrives at the charging station SS5 and the estimated arrival time, and the time when the vehicle travels on the guide route between the charging station SS7 and the charging station SS5. It shows that the vehicle was able to travel at a higher speed than the average traveling speed assumed. In such a case, the correcting means 303 is the error regarding the predicted arrival times T3, T5, T7, predicted departure times T4, T6, T8 and predicted arrival times T9 at the destinations at the charging stations after the charging station SS5. Correction is performed by “10 minutes”. In this correction, the estimated arrival time T3 to the charging station SS5 is T11 that is “T3-10 minutes”, the estimated arrival time T5 to the charging station SS4 is T13 that is “T5 to 10 minutes”, and the estimated arrival time to the charging station SS2. The time T7 is corrected to T15 which is “T7-10 minutes”, the estimated departure time T4 of the charging station SS5 is T12 which is “T4-10 minutes”, and the estimated departure time T6 of the charging station SS4 is “T6-10 minutes”. "T14" and the estimated departure time T8 of the charging station SS2 are corrected to T16 which is "T8-10 minutes", and the arrival arrival time T9 of the destination is corrected to T17 which is "T9-10 minutes".

  In this way, the assumed time information creation unit 301 creates the assumed time table, and the destination information, the waypoint information, the predicted arrival time information, and the predicted departure time information of the assumed time table are transmitted via the communication interface 12 to the portable terminal 21. Sent to. Further, when the estimated time table is updated by the correcting unit 303, it is transmitted to the mobile terminal 21 via the communication interface 12. In particular, in the case of electric vehicles, the total amount of charge required to travel to the destination varies greatly depending on the frequency of air conditioning and electrical components, and there are differences in facilities such as 100V charging, 200V charging, and quick charging even at charging stations. Therefore, it is important to transmit the estimated time table updated by the correction unit 303 to the mobile terminal 21 because the charge amount varies depending on the charging time.

In the mobile terminal 21, the application software 31 is activated, and the transit point information, the destination information, the contact information, the predicted arrival time information of the transit point of the assumed timetable transmitted via the communication interface 12 of the navigation device 1000, The wireless communication unit 22 receives the predicted departure time information of the waypoint and the arrival prediction of the destination. The control unit 23 determines the waypoint information, the destination information, the contact information, the predicted arrival time information of the waypoint, the predicted departure time information of the waypoint, and the arrival prediction of the destination received by the wireless communication unit 22. The data is written in the data table TBL of the storage device 24.
When there is an incoming call from the destination side, the control unit 23 determines whether or not the telephone number of the other party when the incoming call is received matches the contact information set in the data table TBL in advance. Only when the route information, the destination information, the contact information, the predicted arrival time information of the waypoint, the predicted departure time information of the waypoint, and the arrival prediction of the destination are set in the data table TBL. Is automatically answered by voice or sent back to the destination side by e-mail.
In addition, when there is a history of returning the assumed timetable to the destination side, and the mobile terminal 21 receives the updated assumed timetable, the updated assumed timetable is automatically answered even if there is no incoming call from the returned mobile terminal Or you may make it reply again by mail. In this case, if each time of the updated estimated timetable is a predetermined time difference or more with respect to each time of the first assumed timetable, the expected timetable is transmitted each time it is updated. Can be suppressed.

In the above description, the mobile terminal 21 is connected to the navigation apparatus 1000 by a wireless communication signal, but the mobile terminal 21 may be connected directly to the navigation apparatus 1000 via a cable. .
In the above description, the user of the own vehicle operates the portable terminal 21 on the own vehicle side to preset the destination side telephone number (contact address) in the portable terminal 21 on the own vehicle side. However, the mobile terminal 21 on the own vehicle side is provided with a database in which the destination and the telephone number are associated in advance, and when the mobile terminal 21 on the own vehicle side receives the destination information from the navigation device 1000, the destination The telephone number corresponding to the database may be specified based on the database. When comprised in this way, there exists an effect which can omit the input operation of the telephone number of the portable terminal of the destination side with respect to the portable terminal 21 of the own vehicle side.

  As described above, according to this embodiment, when a destination is set and a search result of a guide route to the destination is obtained, one charging time is set to one preset charging station. An appropriate charging station on the guide route is searched so as to be within the range of the maximum charging time Tc per unit, and is displayed and output on the guide route. Further, based on the search result of the charging station, an estimated time table is generated by the estimated time information generation unit 301, and each time the arrival time arrives at each charging station, the estimated arrival time and the actual arrival time are calculated. Based on the error, the correction means 303 corrects and updates the timetable information such as the estimated arrival time and the estimated departure time of the assumed timetable. The route information, destination information, contact information, route arrival prediction time information, route departure prediction time information, and destination arrival time information of the generated estimated timetable are stored in the mobile terminal 21. It is set as the data table TBL in the storage device 24, and is reset to the data table TBL every time it is updated. The transit point information, destination information, contact information, transit point arrival prediction time information, transit point departure prediction time information, destination arrival prediction time information of the assumed timetable set in the data table TBL are data If there is an incoming call from the destination side that matches the contact information set in the table TBL, or if there is an incoming call history, it will be automatically answered by voice or sent back to the destination side by e-mail Is done. Therefore, not only can the arrival time of the destination of the electric vehicle heading to the destination be predicted and known at the destination, but the electric vehicle heading for the destination is being charged or running. Route information, destination information, contact information, estimated arrival time information for the transit point, and predicted departure of the transit point. There is an effect that it is possible to provide an arrival time prediction system in which the time information and the predicted arrival time information of the destination can be easily grasped at the destination.

  In the above embodiment, the charging station has been described as an example of the waypoint setting unit 305. However, a facility such as a restaurant, convenience store, gas station, or service area is set as a waypoint, and the staying time at the facility is also combined. As a result, the assumed time information creation unit 301 can create an assumed time table. Further, when there is a change in waypoint or a change in stay time, the assumed time information correction unit 303 can update the assumed time table.

  DESCRIPTION OF SYMBOLS 1 ... GPS receiving part, 2 ... Current position detection part, 3 ... Route search part, 4 ... Input part, 5 ... Output part, 6 ... Road map database, 7 ... Charge amount calculation means, 8 …… Battery management unit, 9 …… Charging frequency calculation means, 10 …… Charging facility search means, 11 …… Display control part, 12 …… Communication interface, 22 …… Wireless communication part, 21 …… Mobile terminal, 24… ... Storage device (storage means) 31... Application software, 231... Determination means, 232... Response means, 301. …… Intermediate point setting unit, 1000 …… Navigation device.

Claims (2)

A navigation device having a current position detection unit for detecting the current position of the host vehicle, a destination setting unit for setting a destination, a road map database storing information on the destination and road map information, and information communication with the navigation device In an arrival time prediction system equipped with a portable terminal,
The navigation device includes a route search unit that searches and calculates a guide route and distance from the current position detected by the current position detection unit to the destination on the road map information of the road map database, and a route to the destination. A route point in the guide route, a route point setting unit for setting a staying time at the route point, an estimated arrival time of the destination based on the guide route, an estimated arrival time of the route point, and the route point An estimated time information creation unit that calculates an estimated departure time and creates estimated time information; and a communication interface that transmits the destination information and the estimated time information to the mobile terminal;
The mobile terminal includes an information receiving unit that receives the destination information and the estimated time information from the navigation device, and a storage unit that stores the destination information and the estimated time information received by the information receiving unit. When the incoming call is received, the determination means for determining whether or not the source information and the destination information stored in the storage means match; Response means for automatically replying to the sender,
The host vehicle is a vehicle capable of motor driving,
The road map database stores charging station information including position information of charging stations,
The waypoint setting unit sets the charging station and the maximum charging time per one charging station as the waypoint, and also when traveling on the guide route searched by the route search unit, to the destination Calculate the required amount of charge by dividing the amount of charge by the amount of power that can be charged in the maximum charging time per one charging station, and calculating the required number of charges. Search the charging station for the number of times charged,
An arrival time prediction system characterized by that. The navigation device and the mobile terminal constantly update the assumed time information,
The response means transmits new assumed time information to the sender when the time between the assumed time information returned to the sender and the updated assumed time information changes for a predetermined time or more. Item 3. The arrival time prediction system according to Item 1.

Images