Patent ID: 7945363
Filing Date: 2011-05-17
Classification: B60Q,G01C

Abstract:
1. A vehicle control system comprising: storing means for storing map data that indicates a road map and a reliability of the map data that is stored in association with the map data and corresponds to an error of the road map, which is indicated by the map data and is determined on a basis of an actual road; means for sensing an absolute position of a vehicle and for setting a sensing accuracy of the sensed absolute position of the vehicle based on a sensing condition, under which the absolute position of the vehicle is sensed; means for storing the absolute position of the vehicle which is sensed by the sensing means at a time of traveling of the vehicle, as travel path information of the vehicle, wherein the storing means is also for setting and storing a reliability of the travel path information based on the sensing accuracy of the absolute position of the vehicle which is set by the sensing means, and the reliability of the travel path information is stored in association with the travel path information; means for performing a vehicle control operation based on a road state that is determined according to a selected one of the travel path information and the corresponding map data, which corresponds to the travel path information, wherein the reliability of the selected one of the travel path information and the corresponding map data is higher than the reliability of the other one of the travel path information and the corresponding map data; means for obtaining a position of the vehicle on a basis of the road map, which is indicated by the map data stored in the storing means, based on the absolute position of the vehicle, which is sensed by the sensing means, wherein the storing means stores the travel path information in association with the position of the vehicle, which is obtained by the obtaining means on the basis of the road map; and means for determining whether the travel path of the vehicle needs to be stored based on the position of the vehicle, which is obtained by the obtaining means on the basis of the road map, wherein when the determining means determines that the travel path of the vehicle needs to be stored, the storing means stores the travel path information; wherein the obtaining means obtains the position of the vehicle on the basis of the road map by correcting the absolute position of the vehicle, which is sensed by the sensing means, to coincide with the road map that is indicated by the map data; and the determining means determines that the travel path of the vehicle needs to be stored when a degree of the correction made by the obtaining means is larger than a determination reference condition.