FULL SPEED RANGE ADAPTIVE CRUISE CONTROL SYSTEM
First Claim
1. An adaptive cruise control system for a host vehicle, comprising:
- a long-range sensor configured to determine a location of objects positioned ahead of the host vehicle;
at least one short-range sensor configured to determine the location of objects in close proximity ahead of the host vehicle; and
a controller configured to receive information from the long-range sensor and from the at least one short-range sensor and to control the speed of the host vehicle based at least in part thereon, wherein the controller is configured to operate the at least one short-range sensor in a plurality of operating modes, and to select a short-range sensor operating mode at least in part in response to the location of any objects detected by the long-range sensor.
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Accused Products
Abstract
In one aspect, the invention is directed to an adaptive cruise control system for a host vehicle, comprising a long-range sensor configured to determine a location of objects positioned ahead of the host vehicle, at least one short-range sensor configured to determine the location of objects in close proximity ahead of the host vehicle, and a controller configured to receive information from the long-range sensor and from the at least one short-range sensor and to control the speed of the host vehicle based at least in part thereon, wherein the controller is configured to operate the at least one short-range sensor in a plurality of operating modes, and to select a short-range sensor operating mode at least in part in response to the location of any objects detected by the long-range sensor.
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Citations
19 Claims
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1. An adaptive cruise control system for a host vehicle, comprising:
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a long-range sensor configured to determine a location of objects positioned ahead of the host vehicle; at least one short-range sensor configured to determine the location of objects in close proximity ahead of the host vehicle; and a controller configured to receive information from the long-range sensor and from the at least one short-range sensor and to control the speed of the host vehicle based at least in part thereon, wherein the controller is configured to operate the at least one short-range sensor in a plurality of operating modes, and to select a short-range sensor operating mode at least in part in response to the location of any objects detected by the long-range sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An adaptive cruise control system for a host vehicle, comprising:
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a long-range sensor configured to determine a location of vehicles located ahead of the host vehicle; at least one short-range sensor configured to determine the location of objects in close proximity ahead of the host vehicle, wherein the vertical opening angle of the at least one short-range sensor is larger than the vertical opening angle of the long-range sensor; and a controller configured to receive information from the long-range sensor and from the at least one short-range sensor and to control the speed of the host vehicle based thereon. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method for locating objects in front of a host vehicle comprising:
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synchronously transmitting ultrasonic pulses from a plurality of ultrasonic sensors, measuring the time of flight of ultrasonic reflections received by the ultrasonic sensors, calculating the distance of objects based on the measured times of flight, capturing an image of a scene in front of the vehicle, and correlating the distance of objects detected by the ultrasonic sensors with objects extracted from the image of the scene in front of the vehicle.
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Specification