Lane assistance system responsive to extremely fast approaching vehicles
First Claim
1. A lane assistance system for providing a fast rearwardly approaching vehicle output or an extremely fast rearwardly approaching vehicle output in response to a rearwardly approaching vehicle nearing a host vehicle, the system comprising:
- at least one rear sensor unit disposed proximate to a rear of the host vehicle, the at least one rear sensor unit configured to detect at least one of a distance and a velocity of a rearwardly approaching vehicle moving toward the host vehicle; and
an electronic controller configured to;
obtain host vehicle velocity information,obtain at least one of a distance and a velocity of a rearwardly approaching vehicle,determine a relative velocity of a rearwardly approaching vehicle in relation to the host vehicle;
when a lane of a rearwardly approaching vehicle is obtained via the at least one rear sensor unit,upon determining that (a) a rearwardly approaching vehicle is within at least one neighboring lane on either side of a host vehicle lane that the host vehicle is traveling in, and (b) the relative velocity indicates a rearwardly approaching vehicle is approaching the host vehicle at or greater than a fast relative velocity threshold, providing the fast rearwardly approaching vehicle output,when a lane of a rearwardly approaching vehicle is not determinable due to a lack of angular resolution for the rear sensor unit,upon determining that a rearwardly approaching vehicle has a relative velocity that is at or greater than an extremely fast relative velocity threshold, providing the extremely fast rearwardly approaching vehicle output.
1 Assignment
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Accused Products
Abstract
A lane assistance system of a host vehicle for reacting to fast and extremely fast approaching vehicles includes a rear radar sensing unit having a sensor and an electronic controller. The electronic controller determines the distance and relative velocity of the fast approaching vehicle to the host vehicle. Further, depending on the closeness of the approaching vehicle, the lane of the approaching vehicle is determined from angular resolution of the radar signal. When the vehicle is approaching at an extremely fast rate and the angular resolution of the radar signal is not capable of determining an exact relative lane of the approaching vehicle due to the vehicle being too far away, the assistance system warns against or prevents lane changes by the host vehicle.
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Citations
20 Claims
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1. A lane assistance system for providing a fast rearwardly approaching vehicle output or an extremely fast rearwardly approaching vehicle output in response to a rearwardly approaching vehicle nearing a host vehicle, the system comprising:
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at least one rear sensor unit disposed proximate to a rear of the host vehicle, the at least one rear sensor unit configured to detect at least one of a distance and a velocity of a rearwardly approaching vehicle moving toward the host vehicle; and an electronic controller configured to; obtain host vehicle velocity information, obtain at least one of a distance and a velocity of a rearwardly approaching vehicle, determine a relative velocity of a rearwardly approaching vehicle in relation to the host vehicle; when a lane of a rearwardly approaching vehicle is obtained via the at least one rear sensor unit, upon determining that (a) a rearwardly approaching vehicle is within at least one neighboring lane on either side of a host vehicle lane that the host vehicle is traveling in, and (b) the relative velocity indicates a rearwardly approaching vehicle is approaching the host vehicle at or greater than a fast relative velocity threshold, providing the fast rearwardly approaching vehicle output, when a lane of a rearwardly approaching vehicle is not determinable due to a lack of angular resolution for the rear sensor unit, upon determining that a rearwardly approaching vehicle has a relative velocity that is at or greater than an extremely fast relative velocity threshold, providing the extremely fast rearwardly approaching vehicle output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for providing a fast rearwardly approaching vehicle output or an extremely fast rearwardly approaching vehicle output in response to a rearwardly approaching vehicle nearing a host vehicle, the method comprising:
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obtaining at least one of a distance and a velocity of a rearwardly approaching vehicle; determining a relative velocity of a rearwardly approaching vehicle in relation to the host vehicle; when a lane of a rearwardly approaching vehicle is obtained via the at least one rear sensor unit, providing the fast rearwardly approaching vehicle output upon determining that a rearwardly approaching vehicle is within at least one neighboring lane on either side of a host vehicle lane that the host vehicle is driving in and that the relative velocity indicates a rearwardly approaching vehicle is approaching the host vehicle at or greater than a fast relative velocity threshold; and when a lane of a rearwardly approaching vehicle is not determinable due to a lack of angular resolution for the rear sensor unit, providing the extremely fast rearwardly approaching vehicle output upon determining that a rearwardly approaching vehicle has a relative velocity that is at or greater than an extremely fast relative velocity threshold. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification