Vehicle speed control system
First Claim
1. A vehicle speed control system comprising:
- first means for inputting a set speed in response to a driver'"'"'s operation;
second means for sensing an actual vehicle speed of a controlled vehicle;
third means for measuring a distance of the controlled vehicle from a forward vehicle in front of the controlled vehicle;
fourth means for setting a desired travel speed in accordance with the set speed, the actual speed and the distance;
fifth means for controlling the actual vehicle speed to the desired travel speed;
sixth means for estimating a road environment recognition characteristic for a driver of the controlled vehicle; and
seventh means for determining at least one of the distance and the travel speed in accordance with the road environment recognition characteristic.
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Accused Products
Abstract
A vehicle speed control system for automatically sustaining a vehicle speed at a driver'"'"'s setting, and decreasing the vehicle speed with decrease in a distance to a vehicle ahead, includes an input section for collecting information on a road situation ahead and a controller for adapting the speed control characteristic to the road situation. The input section of one embodiment includes an image sensing camera for forming an electronic image of the road ahead, and the controller is configured to detect edges such as derivative edges in the image and determine a correction quantity in accordance with the number of detected edges. The controller adjusts the control characteristic by using the correction quantity.
163 Citations
16 Claims
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1. A vehicle speed control system comprising:
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first means for inputting a set speed in response to a driver'"'"'s operation; second means for sensing an actual vehicle speed of a controlled vehicle; third means for measuring a distance of the controlled vehicle from a forward vehicle in front of the controlled vehicle; fourth means for setting a desired travel speed in accordance with the set speed, the actual speed and the distance; fifth means for controlling the actual vehicle speed to the desired travel speed; sixth means for estimating a road environment recognition characteristic for a driver of the controlled vehicle; and seventh means for determining at least one of the distance and the travel speed in accordance with the road environment recognition characteristic. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A vehicle speed control system for a controlled vehicle, comprising:
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an input section comprising a first input subsection for sensing an actual vehicle speed of the controlled vehicle, a second input subsection for inputting a desired set speed, and a third input subsection for measuring a distance of the controlled vehicle from a vehicle ahead; an actuator section for varying the vehicle speed of the controlled vehicle in response to a control signal; a controller section for controlling the actual vehicle speed of the controlled vehicle by producing the control signal according to a control characteristic in response to input signals sent from the first, second and third input subsections; wherein the input section further comprises a fourth input subsection for collecting information on a driving environment perceived by a driver of the controlled vehicle, and the controller section is configured to determine an environment recognition characteristic quantity in accordance with the information collected by the fourth input subsection and to modify the control characteristic in accordance with the environment recognition characteristic quantity. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification