Adaptive Headlight Control for Curve Illumination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing headlight adjustment systems face issues with predictive curve light, leading to potential blinding of oncoming traffic, suboptimal road illumination, and reduced driver control over light distribution, especially during curve entry and exit, due to faulty predictive angle adjustments and lack of driver influence over pivoting angles.
Innovation Solution
A device that limits the predictive pivotal angle when deviations exceed a permissible limit, ensuring the light distribution adjustment remains relevant to the driving situation and allows driver input through steering, using control means to select between dynamic and predictive angles for each headlight, with the option to adjust the limited predictive angle based on the dynamic angle, thereby preventing excessive errors and enhancing driver control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If predictive pivotal angle is used to adjust headlight direction, then road illumination is improved before curve entry, but excessive deviation may blind oncoming traffic
Solution Approach 1:
The system dynamically adjusts the predictive pivotal angle parameter based on road curvature data, limiting the maximum deviation angle to prevent blinding oncoming traffic while ensuring sufficient road illumination before curve entry
Solution Approach 2:
The control means compares the predictive pivotal angle with the dynamic pivotal angle, and when deviation exceeds a predetermined limit, it corrects the predictive angle by blending it with the dynamic angle based on actual vehicle state feedback
2Illumination intensity
If predictive pivotal angle is adjusted without limits, then road illumination is optimized, but faulty information causes excessive errors in angle adjustment
Solution Approach 1:
The system预先 sets a maximum deviation limit for the predictive pivotal angle, cushioning against the potential harm of faulty predictive information before it can cause excessive angle adjustment errors
Solution Approach 2:
The control means continuously monitors the deviation between predictive and dynamic angles, and when the limit is exceeded, it corrects the predictive angle using feedback from actual vehicle state sensors
3Illumination intensity
If predictive pivoting reaches maximum angle before driver steers, then predictive illumination is provided, but driver loses influence over light distribution
Solution Approach 1:
The system dynamically adjusts the maximum deviation limit based on driving conditions, allowing the predictive pivotal angle to adaptively change within safe bounds rather than being fixed, thereby maintaining driver influence while providing predictive illumination
4Ease of operation
If dynamic pivoting is used, then driver control is maintained, but light adjustment only occurs after vehicle is already in curve
Solution Approach 1:
The system performs preliminary action by adjusting the headlights based on predictive road curvature information before the vehicle actually enters the curve, reducing the reaction time loss inherent in pure dynamic pivoting while maintaining driver control through the limitation mechanism
Data Source
AI summary
A device for determining control parameters to adjust the light distribution of a vehicle headlight when driving through a curve from a first or second angle relative to a longitudinal axis of the vehicle, the first angle determined from first information,namely measurements and/or parameters to be adjusted via actuators of the vehicle, such as speed, steering angle, yaw rate, steering angle of the front wheels, distance from a second vehicle, or road progression ahead of the vehicle,with a control means to determine the first angle the second angle,with an interface to connect the device with actuators to adjust the light distribution of the headlight, where control parameter-signals can be provided.