Vehicle Headlamp Dynamic Light Distribution Control
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Solution Overview
Problem
Conventional vehicle headlight systems face challenges in providing adequate illumination without blinding other road users, as high beam functions blind oncoming vehicles while low beam functions offer insufficient illumination due to high traffic densities.
Innovation Solution
A method for controlling a headlight arrangement that dynamically adjusts the light distribution based on detected road users, regulating the headlight range to ensure it is less than the distance to the user in the direction of travel while maintaining a greater range in side areas, utilizing a masked permanent high beam concept that pivots the light emission direction and adjusts aperture positions to optimize illumination without dazzling other drivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If high beam function is used to provide comprehensive illumination, then illumination intensity is improved, but other road users are blinded
Solution Approach 1:
The headlight arrangement is divided into multiple independently controllable light sources (headlights) that can be individually regulated. Each headlight can have its light distribution adjusted separately, allowing the system to illuminate different areas with different intensities simultaneously, thus providing comprehensive illumination without blinding other road users.
Solution Approach 2:
The position of the diaphragm arrangements is dynamically changeable to adjust the light distribution. By changing the diaphragm position, the system can adapt the illumination pattern in real-time based on the presence and position of other road users, transitioning between different lighting modes to avoid blinding while maintaining adequate illumination.
2Object-affected harmful factors
If low beam function is used to avoid blinding other road users, then harmful factors are reduced, but illumination intensity becomes insufficient
Solution Approach 1:
The system merges the advantages of both high beam and low beam functions by combining multiple controllable light sources with adjustable diaphragms. This allows the headlight arrangement to provide illumination comparable to high beam while incorporating the non-blinding characteristic of low beam through selective directional control of each light source.
Solution Approach 2:
Different areas of the light distribution are given different qualities - the central area has reduced intensity to avoid blinding road users, while side areas maintain higher intensity for adequate illumination. This local differentiation allows the system to simultaneously achieve both goals of avoiding harm and providing sufficient light.
3Length of stationary object
If the headlight range is extended to illuminate farther areas, then illumination coverage is improved, but the risk of blinding distant road users increases
Solution Approach 1:
The system changes the parameters of light distribution by adjusting diaphragm positions to create different light patterns. When a road user is detected, the diaphragm position is changed to reduce intensity in the direction of the road user while maintaining extended range in other directions, thus extending headlight range without increasing blinding risk.
Data Source
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AI summary
The present invention relates to a method for controlling a headlight arrangement for a vehicle (10), in which traffic participants (11, 12) are detected in front of the vehicle (10) in the direction of travel and the light distribution produced by the headlight arrangement is regulated in such a manner that it has a light width in the direction of at least one detected traffic participant (12), which is smaller than the distance to the detected traffic participant (12), and has in another direction a light width which is greater than the distance to the detected traffic participant (12). The method according to the invention is characterized in that the light width in the other direction is regulated as a function of the horizontal angle (F) between the direction of travel of the vehicle (10) and the connecting line from the vehicle (10) to the detected traffic participant (12) or an additional detected traffic participant (11).