Adaptive cruise control with on-ramp detection
AssigneeRobert Bosch GmbH
InventorFreddy Rayes
Life of this patent
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Abstract
Methods and systems for controlling the speed of a host vehicle during an on-ramp merging situation. One method includes identifying a position of an upcoming on-ramp merging with a lane where the host vehicle is currently traveling based on lane markings identified in an image captured by a forward-facing image sensor mounted on the host vehicle, detecting a merging vehicle on the upcoming on-ramp, and determining a speed of the merging vehicle. The method also includes automatically, at a control unit, adjusting a speed of the host vehicle based on the speed of the merging vehicle.
Claims20
A method of controlling a speed of a host vehicle, the method comprising:
- detecting an upcoming merging lane based on a point where two lane marking lines converge followed by a missing lane marking line identified in an image of a road surface captured by a forward-facing image sensor mounted on the host vehicle;
- receiving a merge location, the merge location being the location where the merging lane merges with a lane where the host vehicle is currently traveling based on the point where the two lane marking lines converge;
- detecting a merging vehicle on the upcoming merging lane;
- determining a speed of the merging vehicle;
- and
- automatically, at a control unit, adjusting a speed of the host vehicle based on the speed of the merging vehicle.
A system for controlling a speed of a host vehicle, the system comprising:
- a control unit;
- at least one forward-facing image device mounted on the host vehicle and configured to capture an image of a road surface, identify lane marking lines in the image indicating an upcoming merging lane based on a point where two lane marking lines converge followed by a missing lane marking line, and identify a merge location where the upcoming merging lane merges with a lane where the host vehicle is currently traveling, based on the point where the two lane marking lines converge, and transmit a first signal to the control unit based on the identified upcoming merging lane and the merge location;
- and
- at least one distance-sensing device mounted on the host vehicle and configured to detect a merging vehicle on the upcoming merging lane, determine a speed of the merging vehicle, determine a position of the merging vehicle, and transmit a second signal to the control unit based the speed of the merging vehicle and the position of the merging vehicle,
- wherein the control unit is configured to automatically adjust a speed of the host vehicle based on the first and second signal.
A method of controlling a speed of a vehicle, the method comprising:
- when a first vehicle is traveling in a merging lane, identifying a merge location of a lane of travel into which the merging lane merges based on a point where two lane marking lines converge followed by a missing lane marking line identified in an image of a road surface captured by a forward-facing image sensor mounted on the first vehicle;
- detecting a second vehicle traveling in the lane of travel;
- determining a speed of the second vehicle traveling in the upcoming lane of travel;
- and
- automatically, at a control unit, adjusting a speed of the first vehicle based on the speed of the second vehicle traveling in the upcoming lane of travel.
Dependencies are inferred from the claim text.