ROUTE SEARCH DEVICE
First Claim
1. A route search device for searching for a route that connects a start point to an end point, said route search device comprising:
- a map data section including short distance search road data that contains a short distance search link for use in a short distance search and long distance search road data that contains a long distance search link for use in a long distance search;
a long distance search attribute calculation section for calculating, as an attribute of one long distance search link, the sum of upslope elevation differences of a plurality of short distance search links and the sum of downslope elevation differences of said plurality of short distance search links corresponding to said one long distance search link;
a link cost calculation section for calculating a link cost that is an energy consumption at a time when a vehicle travels in said long distance search link, based on said attribute of said long distance search link and vehicle characteristics; and
a route search processing section for performing, based on said link cost, a process of obtaining such a route that the energy consumption is the lowest, or a process of calculating the energy consumption in a predetermined route.
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Abstract
A route search device capable of searching for a route with the lowest energy cost at a high speed even if the distance between start and end points is long. The route search device includes: a long distance search attribute calculation section for calculating, as an attribute of one long distance search link, the sum of upslope elevation differences of a plurality of short distance search links and the sum of downslope elevation differences of the short distance search links corresponding to the one long distance search link; and a link cost calculation section for calculating, based on the attribute of the long distance search link and vehicle characteristics, a link cost that is an energy consumption at a time when a vehicle travels in the long distance search link.
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Citations
13 Claims
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1. A route search device for searching for a route that connects a start point to an end point, said route search device comprising:
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a map data section including short distance search road data that contains a short distance search link for use in a short distance search and long distance search road data that contains a long distance search link for use in a long distance search; a long distance search attribute calculation section for calculating, as an attribute of one long distance search link, the sum of upslope elevation differences of a plurality of short distance search links and the sum of downslope elevation differences of said plurality of short distance search links corresponding to said one long distance search link; a link cost calculation section for calculating a link cost that is an energy consumption at a time when a vehicle travels in said long distance search link, based on said attribute of said long distance search link and vehicle characteristics; and a route search processing section for performing, based on said link cost, a process of obtaining such a route that the energy consumption is the lowest, or a process of calculating the energy consumption in a predetermined route. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A route search device for searching for a route that connects a start point to an end point, said route search device comprising:
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a map data section including short distance search road data that contains a short distance search link for use in a short distance search and long distance search road data that contains a long distance search link for use in a long distance search; a link cost calculation section for calculating a link cost that is an energy consumption at a time when a vehicle travels in said long distance search link, based on an attribute of said long distance search link and vehicle characteristics; and a route search processing section for performing, based on said link cost, a process of obtaining such a route that the energy consumption is the lowest, or a process of calculating the energy consumption in a predetermined route, wherein said long distance search road data holds, as an attribute thereof, the sum of upslope elevation differences and the sum of downslope elevation differences of a plurality of short distance search links corresponding to said long distance search link.
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Specification