Enhanced lane departure system
First Claim
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1. A lane departure monitoring system comprising:
- a first sensor positionable on a host vehicle with a field of view that includes a plurality of lane markings;
a second sensor positionable on the host vehicle with a field of view that includes at least a portion of a side blind-spot of the host vehicle; and
a control system including at least one processor and one memory, the memory storing instructions that, when executed by the processor, cause the control system toreceive a first signal from the first sensor indicative of a position of the lane markings relative to the host vehicle,determine, based at least in part on the first signal, whether the host vehicle is likely to cross a lane boundary,determine based on a second signal from the second sensor, whether a second vehicle is present in a lane adjacent to the host vehicle,determine whether the second vehicle is a fast approaching vehicle based at least in part on the second signal,output an action signal at a first time when the host vehicle is likely to cross a lane boundary and the second vehicle is determined to be a fast approaching vehicle,output the action signal at a later time when the control system determines that the host vehicle is likely to cross a lane boundary and the second vehicle is determined to not be a fast approaching vehicle,wherein the action signal generates a lane departure warning for a user by generating an audible, visual, or haptic alert.
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Abstract
A lane departure monitoring system uses a forward sensor to determine a lane position of a host vehicle and to detect oncoming vehicles. Rear side sensors monitor the side blind-spots of the host vehicle as well as vehicles in the adjacent lanes that are approaching from the rear. A control system combines the information provided by these sensors and runs integrated programs to carry out a method for providing lane keeping assist and lane departure warnings.
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Citations
17 Claims
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1. A lane departure monitoring system comprising:
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a first sensor positionable on a host vehicle with a field of view that includes a plurality of lane markings; a second sensor positionable on the host vehicle with a field of view that includes at least a portion of a side blind-spot of the host vehicle; and a control system including at least one processor and one memory, the memory storing instructions that, when executed by the processor, cause the control system to receive a first signal from the first sensor indicative of a position of the lane markings relative to the host vehicle, determine, based at least in part on the first signal, whether the host vehicle is likely to cross a lane boundary, determine based on a second signal from the second sensor, whether a second vehicle is present in a lane adjacent to the host vehicle, determine whether the second vehicle is a fast approaching vehicle based at least in part on the second signal, output an action signal at a first time when the host vehicle is likely to cross a lane boundary and the second vehicle is determined to be a fast approaching vehicle, output the action signal at a later time when the control system determines that the host vehicle is likely to cross a lane boundary and the second vehicle is determined to not be a fast approaching vehicle, wherein the action signal generates a lane departure warning for a user by generating an audible, visual, or haptic alert. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A lane departure monitoring method comprising:
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positioning a first sensor on a host vehicle with a field of view that includes a plurality of lane markings; positioning a second sensor on the host vehicle with a field of view that includes at least a portion of a side blind-spot of the host vehicle; receiving a first signal from the first sensor indicative of a position of the lane markings relative to the host vehicle; determining, based at least in part on the first signal, whether the host vehicle is likely to cross a lane boundary; determining based on a second signal from the second sensor, whether a second vehicle is present in a lane adjacent to the host vehicle; determining whether the second vehicle is a fast approaching vehicle based at least in part on the second signal, outputting an action signal at a first time when the host vehicle is likely to cross a lane boundary and the second vehicle is determined to be a fast approaching vehicle; outputting the action signal at a later time when the host vehicle is likely to cross a lane boundary and the second vehicle is determined to not be a fast approaching vehicle, wherein the action signal generates a lane departure warning for a user by generating an audible, visual, or haptic alert. - View Dependent Claims (16, 17)
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Specification