Adaptable Headlight Glare Distance Control
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Solution Overview
Problem
Modern vehicle headlights have increased light intensity and range, leading to glare issues at greater distances, which existing optical monitoring devices cannot effectively identify and mitigate due to their limited monitoring range, potentially causing glare to oncoming road users before they can be recognized.
Innovation Solution
A method for controlling headlight light distribution by defining a glare region with an adaptable glare distance, using an optical monitoring device with a monitoring region to identify road users, and reducing the glare distance based on the residence probability of objects outside the monitoring region within the glare region, thereby reducing or avoiding glare for oncoming road users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the light intensity and range of headlights are increased, then the maximum range of light distribution is improved, but the glare distance increases causing unreasonable glare effects on other road users
Solution Approach 1:
The headlight system dynamically adjusts its light distribution between different beam patterns (e.g., between high beam and low beam, or between different high beam patterns) based on real-time detection of other road users by the monitoring device. This dynamic switching allows the system to maximize illumination when no other users are present while minimizing glare when other users are detected, thus resolving the contradiction between light intensity and glare effects.
Solution Approach 2:
The system changes the parameters of light distribution (intensity, direction, beam pattern) based on the distance and position of detected road users. By adjusting these parameters dynamically, the headlight can maintain high illumination intensity for long range while adapting the beam characteristics to avoid causing unreasonable glare to other road users at different distances.
2Reliability
If optical monitoring devices are used to identify road users, then glare can be suppressed for recognized road users, but the monitoring range is insufficient to detect road users at greater distances within the glare region
Solution Approach 1:
The system performs preliminary detection and classification of objects at the maximum range of the monitoring device before they enter the critical glare region. By identifying and classifying objects (determining they are road users or not) at greater distances, the system can prepare appropriate glare suppression measures in advance, ensuring reliable glare suppression even though the monitoring range itself remains limited.
Solution Approach 2:
The system extends the effective monitoring capability by analyzing multiple dimensions of data (object characteristics, position, movement patterns) to classify objects at the boundary of the monitoring range. This multi-dimensional analysis allows the system to make reliable classifications at maximum monitoring distance, effectively extending the useful detection range for glare suppression purposes.
Data Source
AI summary
The invention relates to a method for controlling a light distribution of a headlight, in particular of a headlight comprising one illuminant or comprising a plurality of illuminants which generates or generate an adaptable light distribution, wherein a glare region of the light distribution is defined with a glare distance outside which no causing of glare for a road user is effected, wherein an optical monitoring device having a monitoring region having a monitoring boundary is provided, wherein a luminous object is identifiable as a road user only within the monitoring region, wherein upon recognition or supposition of at least one luminous object which is outside the monitoring region but within the glare region, the at least one headlight is driven such that the glare distance is adapted, such as in particular reduced.