System and method for guiding route of electric vehicle
First Claim
1. An electric vehicle route guide system, comprising:
- a location sensor that measures a current location of an electric vehicle;
a roadmap storage having link information and node information for providing a running route;
a route calculator that searches for a route having a smallest total value of a compensation link cost that is generated by adding a time link cost in consideration of a running time to an energy-based link cost on each link basis from a departure point to a destination as an optimal energy route;
a display that displays information for route guide of the optimal energy route; and
a controller that controls operations of the location sensor, the roadmap storage, the route calculator, and the display for the search and route guide through a navigation program,wherein the route calculator reflects a time weight function using a straight line distance from the departure point to the destination as a variable to the time link cost.
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Accused Products
Abstract
An electric vehicle route guide system includes: a location sensor that measures a current location of an electric vehicle; a roadmap storage having link information and node information for providing a running route; a route calculator that searches for a route having a smallest total value of a compensation link cost that is generated by adding a time link cost in consideration of a running time to an energy-based link cost on each link basis from a departure point to a destination as an optimal energy route; a display that displays information for route guide of the optimal energy route; and a controller that controls operations of the location sensor, the roadmap storage, the route calculator, and the display for the search and route guide through a navigation program.
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Citations
12 Claims
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1. An electric vehicle route guide system, comprising:
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a location sensor that measures a current location of an electric vehicle; a roadmap storage having link information and node information for providing a running route; a route calculator that searches for a route having a smallest total value of a compensation link cost that is generated by adding a time link cost in consideration of a running time to an energy-based link cost on each link basis from a departure point to a destination as an optimal energy route; a display that displays information for route guide of the optimal energy route; and a controller that controls operations of the location sensor, the roadmap storage, the route calculator, and the display for the search and route guide through a navigation program, wherein the route calculator reflects a time weight function using a straight line distance from the departure point to the destination as a variable to the time link cost. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of guiding an electric vehicle route of a system that searches for an optimal energy route of an electric vehicle, the method comprising steps of:
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determining, by a controller, a straight line distance from a departure point to a destination with reference to a roadmap, when a destination is input; calculating, by a route calculator, an energy-based link cost on a link basis on a route from a departure point to a destination using route search algorithm; calculating, by the route calculator, a time link cost based on a time weight function and a link running required time using the straight line distance from a departure point to a destination as a variable; calculating, by the route calculator, a compensation link cost by adding the time link cost in consideration of a running time on a corresponding link basis to the energy-based link cost on a link basis; and searching, by the route calculator, for a smallest route of added values of the compensation link costs from the departure point to the destination to determine the smallest route to the optimal energy route. - View Dependent Claims (9, 10, 11)
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12. An electric vehicle route guide system that guides an optimal energy route using real time traffic information, the electric vehicle route guide system comprising:
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a location sensor that measures a current location of the electric vehicle; a roadmap storage having link information and node information for providing a running route; a route calculator that searches for a route having a smallest total value of compensation link costs that are generated by adding a time link cost in consideration of a running time on a link basis according to real time traffic information to an energy-based link cost on each link basis from a departure point to a destination as an optimal energy route; a display that displays information for route guide of the optimal energy route; and a controller that controls operations of the location sensor, the roadmap storage, the route calculator, and the display for the search and route guide through a navigation program, wherein the route calculator calculates the time link cost based on a time weight function using a straight line distance from the departure point to the destination as a variable and a link running required time in which a time that is taken when an actual vehicle passes through on each link basis is reflected.
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Specification