ROUTE SEARCHING METHOD AND ROUTE SEARCHING SYSTEM
First Claim
1. A route searching system which searches for routes based on specified departure place and destination using probe car data including running history data of a vehicle, comprising:
- a main branch node detecting section which detects main branch nodes as intersection nodes with a lot of branching of the vehicle based on the probe car data;
a probe car data dividing section which divides route information of the probe car data using the main branch nodes so as to obtain probe segments;
an initial route generating section which generates an initial route based on the departure place and the destination;
a route dividing section which divides the route information into a plurality of partial routes using the main branch nodes;
a derived route generating section which substitutes the probe segments for at least one partial route so as to generate derived routes; and
a route selecting section which selects at least one of the generated derived routes,wherein the derived route generating section substitutes the probe segments for the partial routes obtained by dividing the initial route as the route information in the route dividing section so as to generate derived routes.
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Accused Products
Abstract
It is an object of the present invention to provide a route searching which can reflect know-how such as easiness of running included in the probe car data in an entire route from departure place to destination.
A center device detects main branch nodes from probe car data received from an in-vehicle terminal device by means of a main branch node detecting section. A probe car data dividing section divides the probe car data into probe segments by the main branch nodes. A route dividing section divides an initial route generated by a initial route generating section based on specified departure place and destination, and a derived route generating section substitutes probe segments for the divided routes so as to generate derived routes. The route selecting section scores the derived routes and select one so as to provide a recommended route in which know-how such as easiness of running included in the probe car data is reflected.
21 Citations
8 Claims
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1. A route searching system which searches for routes based on specified departure place and destination using probe car data including running history data of a vehicle, comprising:
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a main branch node detecting section which detects main branch nodes as intersection nodes with a lot of branching of the vehicle based on the probe car data; a probe car data dividing section which divides route information of the probe car data using the main branch nodes so as to obtain probe segments; an initial route generating section which generates an initial route based on the departure place and the destination; a route dividing section which divides the route information into a plurality of partial routes using the main branch nodes; a derived route generating section which substitutes the probe segments for at least one partial route so as to generate derived routes; and a route selecting section which selects at least one of the generated derived routes, wherein the derived route generating section substitutes the probe segments for the partial routes obtained by dividing the initial route as the route information in the route dividing section so as to generate derived routes. - View Dependent Claims (2, 3, 4)
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5. A route searching method for searching for a route based on specified departure place and destination using probe car data including running history data of a vehicle, comprising:
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executing a main branch node detecting process for detecting intersection nodes with many branching of the vehicle based on the probe car data as main branch nodes and a probe car data dividing process for dividing route information of the probe car data using the main branch nodes so as to obtain probe segments so as to obtain the main branch nodes and the probe segments in advance; generating an initial route based on the specified departure place and the destination; executing a route dividing process for dividing the route information into a plurality of partial routes using the main branch nodes so as to divide the initial route into partial routes; executing a derived route generating process for substituting the probe segments for at least one partial route so as to generate derived routes, and generating derived routes in which the partial routes obtained by dividing the initial route are substituted; and executing a route selecting process for selecting at least one of the generated derived routes so as to obtain a selected route. - View Dependent Claims (6, 7, 8)
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Specification