Route calculation device, navigation device, route calculation method, navigation method, and communication system
First Claim
1. A route calculation device comprising at least one processor configured to:
- acquire communication available hours of a plurality of branch stations which are devices that collect information and transmit the information to a mobile station with which communication is established;
acquire a reference time comprising one of a current time of the mobile station and a departure time at which the mobile station starts traveling;
acquire time information of a road section comprising information on a travel time from a current location of the mobile station to each of the plurality of branch stations and information on a travel time between the branch stations;
calculate a first travel route that offers a shortest required time for stopping by the branch stations based on the communication available hours, the reference time, and the time information of a road section;
acquire speed information of the road section;
acquire a travel speed;
acquire a target speed based on the first travel route and the speed information of the road section;
acquire information on a location of traffic congestion;
determine whether a difference between the target speed and the travel speed is outside a predetermined speed range;
determine whether there is traffic congestion on the first travel route based on the first travel route and the information on the location of traffic congestion;
when it is determined that the difference between the target speed and the travel speed is outside the predetermined speed range and that there is traffic congestion on the first travel route, calculate a second travel route that offers a shortest required time for stopping by the branch stations based on the communication available hours, the reference time, and the time information of the road section.
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Accused Products
Abstract
The present invention provides a route calculation device, a navigation device, a route calculation method, and a navigation device that can calculate a route that allows a user to arrive at a destination or a stop-off point within a determined time period. The route calculation device according to the present invention includes a communication available hours acquisition unit 11 that acquires communication available hours of a plurality of branch stations that establish communication with a mobile station, a reference time acquisition unit 12 that acquires a reference time, a road information acquisition unit 13 that acquires time information of a road section, and a route calculation unit 31 that calculates a first travel route that offers the shortest required time for stopping by the branch stations based on the communication available hours, the reference time, and the time information of a road section.
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Citations
19 Claims
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1. A route calculation device comprising at least one processor configured to:
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acquire communication available hours of a plurality of branch stations which are devices that collect information and transmit the information to a mobile station with which communication is established; acquire a reference time comprising one of a current time of the mobile station and a departure time at which the mobile station starts traveling; acquire time information of a road section comprising information on a travel time from a current location of the mobile station to each of the plurality of branch stations and information on a travel time between the branch stations; calculate a first travel route that offers a shortest required time for stopping by the branch stations based on the communication available hours, the reference time, and the time information of a road section; acquire speed information of the road section; acquire a travel speed; acquire a target speed based on the first travel route and the speed information of the road section; acquire information on a location of traffic congestion; determine whether a difference between the target speed and the travel speed is outside a predetermined speed range; determine whether there is traffic congestion on the first travel route based on the first travel route and the information on the location of traffic congestion; when it is determined that the difference between the target speed and the travel speed is outside the predetermined speed range and that there is traffic congestion on the first travel route, calculate a second travel route that offers a shortest required time for stopping by the branch stations based on the communication available hours, the reference time, and the time information of the road section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A route calculation method comprising following steps:
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acquiring communication available hours of a plurality of branch stations which are devices that collect information and transmit the information to a mobile station with which communication is established; acquiring a reference time comprising one of a current time of the mobile station and a departure time at which the mobile station starts traveling; acquiring time information of a road section comprising information on a travel time from a current location of the mobile station to each of the plurality of branch stations and information on a travel time between the branch stations; calculating a first travel route that offers a shortest required time for stopping by the branch stations based on the communication available hours, the reference time, and the time information of a road section; acquiring speed information of the road section; acquiring a travel speed; acquiring a target speed based on the first travel route and the speed information of the road section; acquiring information on a location of traffic congestion; determining whether a difference between the target speed and the travel speed is outside a predetermined speed range; determining whether there is traffic congestion on the first travel route based on the first travel route and the information on the location of traffic congestion; when it is determined that the difference between the target speed and the travel speed is outside the predetermined speed range and that there is traffic congestion on the first travel route, calculating a second travel route that offers a shortest required time for stopping by the branch stations based on the communication available hours, the reference time, and the time information of the road section. - View Dependent Claims (17)
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18. A route calculation device comprising at least one processor configured to:
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acquire communication available hours of a plurality of branch stations which are devices that collect information and transmit the information to a mobile station with which communication is established; acquire a reference time comprising one of a current time of the mobile station and a departure time at which the mobile station starts traveling; acquire time information of a road section comprising information on a travel time from a current location of the mobile station to each of the plurality of branch stations and information on a travel time between the branch stations; calculate a first travel route that offers a shortest required time for stopping by the branch stations based on the communication available hours, the reference time, and the time information of a road section; acquire an elapsed time after the mobile station has started to travel; acquire a current location; calculate a target arrival location based on the speed information of the road section and the elapsed time; and determine whether a locational difference between the target arrival location and the current location is outside of a predetermined location range, wherein when it is determined that the locational difference between the target arrival location and the current location is outside of the predetermined location range, the processor is configured to calculate a second travel route that offers a shortest required time for stopping by the plurality of branch stations based on the communication available hours, the reference time, and the time information of the road section.
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19. A navigation device comprising:
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a route calculation device comprising at least one processor configured to; acquire communication available hours of a plurality of branch stations which are devices that collect information and transmit the information to a mobile station with which communication is established; acquire a reference time comprising one of a current time of the mobile station and a departure time at which the mobile station starts traveling; acquire time information of a road section comprising information on a travel time from a current location of the mobile station to each of the plurality of branch stations and information on a travel time between the branch stations; and calculate a first travel route that offers a shortest required time for stopping by the branch stations based on the communication available hours, the reference time, and the time information of a road section; acquire a communication range of a branch station of the plurality of branch stations; and a display, wherein the display displays the first travel route calculated by the route calculation device and displays the communication range of the branch station.
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Specification