Predictive adaptive front lighting integrated system

• US 20070052555A1
• Filed: 09/08/2005
• Published: 03/08/2007
• Est. Priority Date: 09/08/2005
• Status: Abandoned Application

• Current Assignee: Visteon Global Technologies Incorporated (Visteon Corporation)
• Original Assignee: Visteon Global Technologies Incorporated (Visteon Corporation)
• Inventors: Ibrahim, Faroog
• Application Number:
  US11/222,056
• Publication Number:
  US 20070052555A1
• Time in Patent Office: Days
• US Class Current: 340/990
• CPC Class Codes: B60Q 1/12 due to steering position
• CPC Class Codes: B60Q 2300/112 Vehicle speed
• CPC Class Codes: B60Q 2300/122 Steering angle
• CPC Class Codes: B60Q 2300/134 Yaw
• CPC Class Codes: B60Q 2300/142 Turn signal actuation
• CPC Class Codes: B60Q 2300/322 Road curvature
• CPC Class Codes: G08G 1/096827 where the route is computed onboard
• CPC Class Codes: G08G 1/167 Driving aids for lane monitoring, lane changing, e.g. blind spot detection

Abstract

An adaptive front lighting system includes a navigation system and a control module. The navigation system determines the curvature of the road ahead of the vehicle, and the control module receives information about the curvature of the road ahead of the vehicle and instructs the headlamps to swivel over a swivel angle to illuminate the roadway ahead of the vehicle.

Claims

1. An adaptive front lighting system for aiming headlamps of a vehicle to illuminate the roadway ahead of the vehicle comprising:

a navigation system that determines the curvature of the road ahead of the vehicle; and

a control module that receives information about the curvature of the road ahead of the vehicle and instructs the headlamps to swivel over a swivel angle to illuminate the roadway ahead of the vehicle.

2. The system of claim 1 further comprising a fusion module that processes the curvature information from the navigation system, calculates the swivel angle for the headlamps, and transmits the calculated swivel angle to the control module.

3. The system of claim 2 further comprising a lane detection module that detects, tracks, and recognizes lane boundaries and passes this information to the navigation system to aid determining a most likely path of the vehicle.

4. The system of claim 3 wherein the lane detection module is implemented with a curvature calculation algorithm to calculate the curvature ahead of the vehicle.

5. The system of claim 3 wherein the lane detection module detects lane changes and calculates vehicle position and orientation with respect to lane markings.

6. The system of claim 3 further comprising a camera that transmits road scene images to the lane detection module.

7. The system of claim 1 wherein the fusion module determines the curvature values of the road ahead of the vehicle with a particular level of confidence.

8. The system of claim 1 wherein the navigation system includes a vehicle positioning and path prediction module that communicates with the fusion module, the vehicle positioning and path prediction module determining the vehicle'"'"'s position in a global positioning system, determining the vehicle'"'"'s position on a map based on the position in the global positioning system, and looking ahead on the map for curves and determining the most likely path through the curves.

9. The system of claim 8 further comprising a yaw rate sensor that transmits the vehicle'"'"'s yaw rate to the fusion module and the vehicle positioning and path prediction module and a vehicle speed sensor that transmits the vehicle'"'"'s speed to the fusion module and the vehicle positioning and path prediction module.

10. The system of claim 9 further comprising a steering angle sensor that transmits the angle of the steering angle of the vehicle'"'"'s wheels to the fusion module.

11. A method for aiming headlamps of a vehicle to illuminate the roadway ahead of the vehicle comprising:

determining the curvature of the road ahead of the vehicle with a navigation system; and

receiving information about the curvature of the road ahead of the vehicle with and control module and instructing the headlamps to swivel over a swivel angle to illuminate roadway ahead of the vehicle with the control module.

12. The method of claim 11 further comprising processing the curvature information from the navigation system with a fusion module, calculating the swivel angle for the headlamps with the fusion module, and transmitting the calculated swivel angle from the fusion module to the control module.

13. The method of claim 12 further comprising detecting, tracking, and recognizing lane boundaries and passing this information to the navigation system to aid determining a most likely path of the vehicle.

14. The method of claim 13 further comprising transmitting road scene images from a camera to the lane detection module.

15. The method of claim 11 further comprising determining the curvature values of the road ahead of the vehicle with a particular level of confidence.

16. The method of claim 11 further comprising determining the vehicle'"'"'s position in a global positioning system, determining the vehicle'"'"'s position on a map based on the position in the global positioning system, and looking ahead on the map for curves and determining the most likely path through the curves.