Vehicle speed control system
First Claim
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1. A vehicle speed control system comprising:
- a first acquisition part for acquiring a current position;
a second acquisition part for acquiring map information;
a sensor mounted on the vehicle for detecting objects installed along a road;
a first road profile estimating part for obtaining a first road profile ahead of the current position based on the map information;
a first target velocity calculation part for computing a first target velocity based on the first road profile;
a second road profile estimating part for obtaining a second road profile ahead of the current position based on information detected by the sensor, without using the map information;
a second target velocity calculation part for computing a second target velocity based on the second road profile; and
a velocity control part forcomparing the first target velocity and the second target velocity,selecting a lower target velocity therefrom, andcontrolling a vehicle velocity in accordance with the selected target velocity.
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Abstract
A vehicle speed control system includes: a unit for computing a first target velocity based on map information; a unit for computing a second target velocity based on a road profile obtained from other information than the map information (such as lane recognition using a camera); a unit for comparing the first target velocity and the second target velocity; a unit for selecting a lower target velocity therefrom; and a unit for controlling a vehicle velocity in accordance with the selected target velocity.
16 Citations
14 Claims
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1. A vehicle speed control system comprising:
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a first acquisition part for acquiring a current position; a second acquisition part for acquiring map information; a sensor mounted on the vehicle for detecting objects installed along a road; a first road profile estimating part for obtaining a first road profile ahead of the current position based on the map information; a first target velocity calculation part for computing a first target velocity based on the first road profile; a second road profile estimating part for obtaining a second road profile ahead of the current position based on information detected by the sensor, without using the map information; a second target velocity calculation part for computing a second target velocity based on the second road profile; and a velocity control part for comparing the first target velocity and the second target velocity, selecting a lower target velocity therefrom, and controlling a vehicle velocity in accordance with the selected target velocity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification