TRAILER LANE DEPARTURE WARNING SYSTEM
First Claim
1. A lane departure warning system for a vehicle towing a trailer, comprising:
- an imager detecting a lane boundary on a roadway;
a sensor detecting a hitch angle between the vehicle and the trailer;
a controller determining a lateral offset of the trailer relative to the vehicle based on the hitch angle and a length of the trailer; and
a warning apparatus generating a signal when the lateral offset crosses the lane boundary.
1 Assignment
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Accused Products
Abstract
A lane departure warning system has a trailer detector for detecting that a trailer is attached to a vehicle, a lane boundary detector for detecting a position of a lane boundary on a roadway over which the vehicle is travelling, and an information processor including a calibrator for generating calibration parameters used in determining an unintended lane departure event with respect to the lane boundary. The information processor initiates a process for allowing an operator to provide trailer width information when the trailer detector indicates that the vehicle is towing a trailer. The lane departure warning system also includes a sensor for detecting a hitch angle between the vehicle and the trailer. A controller determines a lateral offset of the trailer relative to the vehicle based on the hitch angle and a length of the trailer for generating a warning signal when the lateral offset crosses the lane boundary.
68 Citations
20 Claims
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1. A lane departure warning system for a vehicle towing a trailer, comprising:
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an imager detecting a lane boundary on a roadway; a sensor detecting a hitch angle between the vehicle and the trailer; a controller determining a lateral offset of the trailer relative to the vehicle based on the hitch angle and a length of the trailer; and a warning apparatus generating a signal when the lateral offset crosses the lane boundary. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for providing a lane departure warning for a vehicle towing a trailer, comprising:
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detecting a lane boundary on a roadway with an imager; sensing a hitch angle between the vehicle and the trailer; determining a lateral offset of the trailer relative to the vehicle based on the hitch angle and length and width dimension of the trailer; and generating a warning signal when the lateral offset traverses the lane boundary. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for providing a lane departure warning for a vehicle towing a trailer, comprising:
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detecting a lane boundary on a roadway proximate the vehicle; determining a curvature of the roadway proximate the vehicle; sensing a hitch angle between the vehicle and the trailer; determining a lateral offset of an outside rear portion the trailer relative to the vehicle based on the hitch angle, a length of the trailer, and a width of the trailer; reducing the lateral offset when the curvature is greater than a threshold curvature tightness and correlates with an orientation of the hitch angle; and generating a warning signal when the lateral offset crosses the lane boundary. - View Dependent Claims (18, 19, 20)
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Specification