Single path road geometry predictive adaptive front lighting algorithm using vehicle positioning and map data
First Claim
1. A system for predictive adaptive front lighting of a vehicle, the system comprising:
- a first headlamp and a second headlamp configured to cooperatively project a beam pattern;
a first swivel mechanism coupled to the first headlamp to change a swivel angle of the first headlamp;
a second swivel mechanism coupled to the second headlamp to change a swivel angle of the second headlamp;
a controller configured to identify a map location of the vehicle, to determine a most likely path of the vehicle based on the map location, and to calculate a desired swivel angle of the first and second headlamps based on the most likely path of the vehicle; and
wherein the controller is configured to determine a kink point position relative to the most likely path of the vehicle, wherein the kink point is an inflection point in the beam pattern formed by the first and second headlamp.
10 Assignments
0 Petitions
Accused Products
Abstract
A system for predictive front lighting of a vehicle. The system includes a first and second headlamps, a first and second swivel mechanisms and a controller. The first and second headlamps project a beam pattern for illumination of the vehicle path. The controller receives vehicle position data, for example from a GPS system, and accesses a map database to identify a map location of the vehicle. The controller further analyzes the map to determine a most likely path of the vehicle based on the map location and other vehicle heading parameters. The controller then calculates the desired swivel angle of the first and second headlamps based on the most likely path of the vehicle, and the first and second swivel mechanisms manipulate the first and second headlamps to accordingly change the swivel angle of the headlamps.
-
Citations
17 Claims
-
1. A system for predictive adaptive front lighting of a vehicle, the system comprising:
-
a first headlamp and a second headlamp configured to cooperatively project a beam pattern; a first swivel mechanism coupled to the first headlamp to change a swivel angle of the first headlamp; a second swivel mechanism coupled to the second headlamp to change a swivel angle of the second headlamp; a controller configured to identify a map location of the vehicle, to determine a most likely path of the vehicle based on the map location, and to calculate a desired swivel angle of the first and second headlamps based on the most likely path of the vehicle; and wherein the controller is configured to determine a kink point position relative to the most likely path of the vehicle, wherein the kink point is an inflection point in the beam pattern formed by the first and second headlamp. - View Dependent Claims (2, 3, 4)
-
-
5. A system for predictive adaptive front lighting of a vehicle, the system comprising:
-
a first headlamp and a second headlamp configured to cooperatively project a beam pattern; a first swivel mechanism coupled to the first headlamp to change a swivel angle of the first headlamp; a second swivel mechanism coupled to the second headlamp to change a swivel angle of the second headlamp; a controller configured to identify a map location of the vehicle, to determine a most likely path of the vehicle based on the map location, and to calculate a desired swivel angle of the first and second headlamps based on the most likely path of the vehicle; and wherein the controller is configured to determine a kink point position relative to the most likely path of the vehicle; and calculate a nominal swivel angle such that the kink point is a predefined distance from a center of a host vehicle lane, the nominal swivel angle is calculated according to the relationship; - View Dependent Claims (6, 7, 8, 9)
-
-
10. A system for predictive adaptive front lighting of a vehicle, the system comprising:
-
a first headlamp and a second headlamp configured to cooperatively project a beam pattern; a first swivel mechanism coupled to the first headlamp to change a swivel angle of the first headlamp; a second swivel mechanism coupled to the second headlamp to change a swivel angle of the second headlamp; a controller configured to identify a map location of the vehicle, to determine a most likely path of the vehicle based on the map location, and to calculate a desired swivel angle of the first and second headlamps based on the most likely path of the vehicle; and wherein the controller is configured to determine a kink point position relative to the most likely path of the vehicle; calculate a nominal swivel angle such that the kink point is a predefined distance from a center of a host vehicle lane; and wherein the controller is configured to calculate the maximum swivel angle based on the relationship so as to minimize glare for on coming traffic;
-
-
11. A system for predictive adaptive front lighting of a vehicle, the system comprising:
-
a first headlamp and a second headlamp configured to cooperatively project a beam pattern; a first swivel mechanism coupled to the first headlamp to change a swivel angle of the first headlamp; a second swivel mechanism coupled to the second headlamp to change a swivel angle of the second headlamp; a controller configured to identify a map location of the vehicle, to determine a most likely path of the vehicle based on the map location, and to calculate a desired swivel angle of the first and second headlamps based on the most likely path of the vehicle; and wherein the controller is configured to determine a kink point position relative to the most likely path of the vehicle; calculate a nominal swivel angle such that the kink point is a predefined distance from a center of a host vehicle lane; and wherein the controller is configured to calculate a maximum swivel angle so as to minimize glare for on coming traffic based the relationship;
|φ
f|=min(|φ
L|,|φ
|);where, φ
f is the desired swivel angle;φ
is the nominal swivel angle; andφ
L is the maximum swivel angle.
-
-
12. A method for predictive adaptive front lighting of a vehicle, the method comprising:
-
receiving a vehicle position; identifying a map location of the vehicle; determining a most likely path of the vehicle based on the map location; calculating a desired swivel angle for vehicle headlamps based on the most likely path; wherein the desired swivel angle is calculated such that a kink point position is determined relative to the most likely path of the vehicle; and calculating a nominal swivel angle such that the kink point is a predefined distance from a center of a host vehicle lane, according to the relationship; - View Dependent Claims (13, 14, 15, 16, 17)
-
Specification