Method of intersection identification for collision warning system
First Claim
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1. A method of operating a motor vehicle, comprising the steps of:
- receiving intersection information;
retrieving a predetermined distance;
determining a set of potential intersections from the intersection information, the set of potential intersections including all the intersections that are less than the predetermined distance in front of the motor vehicle;
selecting an identified intersection from the set of potential intersections;
determining a vehicle speed of the motor vehicle;
determining whether the vehicle speed has slowed to below a threshold speed and whether a distance from the motor vehicle to the identified intersection is less than the predetermined distance;
receiving information from a remote vehicle;
estimating a vehicle collision point for the motor vehicle and the remote vehicle based upon the information received from the remote vehicle;
determining a threat level according to the identified intersection, the vehicle speed, the distance from the motor vehicle to the identified intersection and the estimated vehicle collision point for the motor vehicle and the remote vehicle;
andcontrolling a collision warning system of the motor vehicle according to the threat level.
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Abstract
A method of identifying an intersection for a collision warning system is disclosed. The method includes steps of selecting an identified intersection where a driver intends to turn from a set of potential intersections. The collision warning system is then controlled according to the identified intersection.
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Citations
21 Claims
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1. A method of operating a motor vehicle, comprising the steps of:
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receiving intersection information; retrieving a predetermined distance; determining a set of potential intersections from the intersection information, the set of potential intersections including all the intersections that are less than the predetermined distance in front of the motor vehicle; selecting an identified intersection from the set of potential intersections; determining a vehicle speed of the motor vehicle; determining whether the vehicle speed has slowed to below a threshold speed and whether a distance from the motor vehicle to the identified intersection is less than the predetermined distance; receiving information from a remote vehicle; estimating a vehicle collision point for the motor vehicle and the remote vehicle based upon the information received from the remote vehicle; determining a threat level according to the identified intersection, the vehicle speed, the distance from the motor vehicle to the identified intersection and the estimated vehicle collision point for the motor vehicle and the remote vehicle; and controlling a collision warning system of the motor vehicle according to the threat level. - View Dependent Claims (2, 3, 4, 5)
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6. A method of operating a motor vehicle with a driver, comprising the steps of:
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receiving intersection information; determining a vehicle speed; determining at least one potential intersection; determining whether the driver intends to turn the motor vehicle to the left; determining a distance from the motor vehicle to the at least one potential intersection; retrieving a threshold speed and a threshold distance; setting the potential intersection as an identified intersection when the driver has slowed the vehicle speed to below the threshold speed and when the distance is below the threshold distance; and controlling a collision warning system of the motor vehicle according to the identified intersection wherein the step of controlling the collision warning system includes steps of receiving information from a remote vehicle, determining if the remote vehicle is close to the identified intersection, and estimating a collision point for the motor vehicle and the remote vehicle based upon the information received from the remote vehicle. - View Dependent Claims (7, 8, 9)
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10. A method of operating a motor vehicle, comprising the steps of:
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receiving intersection information; determining a vehicle speed; determining at least one potential intersection; determining a distance from the motor vehicle to the at least one potential intersection; retrieving a threshold speed and a threshold distance; setting the potential intersection as an identified intersection when the vehicle speed is below the threshold speed and when the distance is below the threshold distance; and controlling a collision warning system of the motor vehicle according to the identified intersection; wherein the step of controlling the collision warning system further comprises steps of; determining a next intersection from the set of potential intersections, the next intersection being further in front of the motor vehicle than the identified intersection; determining if there is a stopped leading vehicle at the next intersection; if there is a stopped leading vehicle at the next intersection, determining that the chance for a collision with a remote vehicle is low and controlling a collision warning system of the motor vehicle in a normal alert mode providing normal alert information to a driver of the motor vehicle; if there is not a stopped leading vehicle at the next intersection, determining that the chance for a collision requires controlling the collision warning system in an enhanced alert mode providing enhanced alert information to the driver of the motor vehicle; wherein the enhanced alert mode is different than the normal alert mode. - View Dependent Claims (11, 19, 20, 21)
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12. A method of operating a motor vehicle, comprising the steps of:
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receiving intersection information; determining an identified intersection and a next intersection from a set of potential intersections, the next intersection being further in front of the motor vehicle than the identified intersection; determining if there is a stopped leading vehicle at the next intersection; determining whether a driver of the motor vehicle intends to turn the motor vehicle; determining whether a vehicle speed of the motor vehicle has slowed to below a threshold speed; determining whether there is a stopped vehicle at the next intersection; if there is a stopped vehicle at the next intersection, determining that the chance for a collision with a remote vehicle is low and controlling a collision warning system of the motor vehicle in a normal alert mode; and if there is not a stopped vehicle at the next intersection, determining that the chance of a collision requires controlling the collision warning system in an enhanced alert mode when there is not a stopped leading vehicle at the next intersection; wherein the enhanced alert mode is different than the normal alert mode. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification