Vehicle control system
First Claim
1. A vehicle control system, comprising:
- map information outputting means for outputting a map comprised of a plurality of coordinate points representing a road;
vehicle position detecting means for detecting a position of a vehicle on said map;
vehicle speed detecting means for detecting a vehicle speed;
operating-section calculation means for calculating an operating section in which it is determined whether said detected vehicle speed is appropriate while driving in said operating section;
passable vehicle speed calculation means for calculating a passable vehicle speed at a virtual vehicle position which is established in said operating section, based on said detected vehicle speed and a distance from said vehicle position to said virtual vehicle position;
zone establishing means for establishing a passage determining zone having said passable vehicle speed as a criterion based on said virtual vehicle position;
passing condition determining means for determining a passing condition by comparing said passage determining zone with a coordinate point located ahead of said virtual vehicle position within said operating section; and
vehicle control means for controlling said vehicle based on a result of the determination by said passing condition determining means.
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Accused Products
Abstract
A vehicle control system which controls a vehicle in accordance with the curvature of a road as determined from map information comprising a set of coordinate points which represent the course of the road. A passable vehicle speed enabling the vehicle to pass through a plurality of nodes existing at predetermined distances within an operating section established on the road ahead of a given vehicle position is calculated on the assumption that a voluntary speed reduction has been conducted. The radii of a first virtual turning locus and a second virtual turning locus produced at a predetermined lateral acceleration are calculated based on the passable vehicle speeds at the nodes. A passable zone, a warning zone and an automatic speed-reducing zone are established based on the first and second virtual turning locus radii. If any of the nodes ahead of the virtual vehicle position exists in the warning zone, a warning is provided to the driver. If any of the nodes ahead of the virtual vehicle position exists in the automatic speed-reducing zone, automatic speed reduction of the vehicle is carried out.
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Citations
9 Claims
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1. A vehicle control system, comprising:
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map information outputting means for outputting a map comprised of a plurality of coordinate points representing a road; vehicle position detecting means for detecting a position of a vehicle on said map; vehicle speed detecting means for detecting a vehicle speed; operating-section calculation means for calculating an operating section in which it is determined whether said detected vehicle speed is appropriate while driving in said operating section; passable vehicle speed calculation means for calculating a passable vehicle speed at a virtual vehicle position which is established in said operating section, based on said detected vehicle speed and a distance from said vehicle position to said virtual vehicle position; zone establishing means for establishing a passage determining zone having said passable vehicle speed as a criterion based on said virtual vehicle position; passing condition determining means for determining a passing condition by comparing said passage determining zone with a coordinate point located ahead of said virtual vehicle position within said operating section; and vehicle control means for controlling said vehicle based on a result of the determination by said passing condition determining means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification