Adaptive Headlight Beam Boundary Control for Pitching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional headlight leveling control systems fail to effectively adapt the headlight beam boundary to varying roadway topography, leading to potential blinding of other drivers during vehicle pitching motions caused by road surface irregularities, and do not adequately ensure maximum illumination while preventing blinding.
Innovation Solution
A method and system that detect the topography of the roadway ahead using optical sensors, such as cameras, to predict pitching motions and adjust the headlight beam boundary proactively, setting a safety angle to maintain maximum illumination while preventing blinding, by shifting the beam boundary closer to the vehicle when pitching motions are anticipated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the headlight beam boundary is set at maximum distance to illuminate the largest area, then the illuminated area is maximized, but other drivers may be blinded during pitching motions
Solution Approach 1:
The system performs preliminary detection of roadway topography using optical sensors to identify areas with potential pitching motions before the vehicle reaches them. Based on this advance information, the headlight beam boundary is proactively adjusted to a safer position before the pitching motion occurs, preventing blinding of other drivers while maintaining maximum illumination when conditions permit
Solution Approach 2:
The headlight beam boundary is made dynamically adjustable rather than fixed. The system continuously monitors roadway topography and vehicle motion, automatically shifting the beam boundary between maximum distance position (for illumination) and safer position (for preventing blinding) based on real-time conditions, creating a dynamic balance between the two competing requirements
2Reliability
If the headlight beam boundary is shifted closer to prevent blinding, then safety is improved, but the illuminated area is reduced
Solution Approach 1:
The system shifts the beam boundary closer only when and where pitching motions are predicted based on advance topography detection, rather than maintaining a reduced position continuously. This selective application maintains safety when needed while preserving maximum illumination area during normal driving conditions
Solution Approach 2:
The beam boundary adjustment is applied locally and selectively to specific roadway sections where topography indicates potential pitching motions, rather than uniformly across all driving conditions. This allows the system to maintain optimal illumination in safe areas while applying safety adjustments only where necessary
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system ensures a large illuminated area for the driver while minimizing the risk of blinding other road users by dynamically adjusting the headlight beam boundary based on predicted pitching motions, maintaining a safety angle that adapts to changing roadway conditions, thus enhancing safety and visibility.
Implementation Method 1
detecting at least one area of a roadway, the area being situated in the travel direction
Data Source
AI summary
A method for adapting a headlight beam boundary of a light cone of at least one headlight of a vehicle includes the following steps: detecting at least one area of a roadway, the area being situated in the travel direction of the vehicle; determining a topography of the at least one area of the roadway; and providing a control signal for adapting the headlight beam boundary as a function of the topography.