Pixel Headlamp Light Distribution Calculation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for determining total light distribution of pixel headlamps with a high number of individual light sources are inefficient, leading to increased computing time and inability to meet real-time simulation requirements, especially when simulating glare-free high beams in complex driving scenarios.
Innovation Solution
A method utilizing a computing unit to preprocess maximum energization individual light distributions into a data structure that represents light intensity per coordinate, allowing for rapid determination of total light distribution by considering relative energization values, thereby reducing computing time and enabling real-time simulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods are used to determine total light distribution of pixel headlamps with a high number of individual light sources, then calculation accuracy is maintained, but computing time increases significantly and real-time simulation requirements cannot be met
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing the light distribution patterns of individual pixels in a lookup table before simulation. During real-time simulation, the total light distribution is determined by rapidly retrieving and combining pre-computed pixel patterns based on current pixel states, avoiding time-consuming real-time calculations while maintaining accuracy
Solution Approach 2:
The patent segments the complex calculation of total light distribution into independent pixel-level contributions. Each pixel's light distribution is calculated and stored separately in the lookup table, allowing the total distribution to be constructed by combining these pre-computed segments through simple addition operations during simulation
2Adaptability or versatility
If the number of individual light sources in pixel headlamps is increased to achieve more complex light functions, then light function versatility is improved, but the complexity of control software and pre-calculations increases
Solution Approach 1:
The patent segments the control of thousands of individual pixels into independent, manageable units. Each pixel's light distribution characteristics are pre-calculated and stored separately, allowing complex light functions to be achieved by simply adjusting individual pixel states and combining their pre-computed patterns, thereby simplifying control software
Solution Approach 2:
The patent uses the lookup table as a copy of pre-computed light distribution data that can be rapidly retrieved and combined during simulation. This copying approach allows the system to work with simplified data representations rather than performing complex calculations repeatedly, reducing software complexity while maintaining versatility
Data Source
AI summary
A method for determining a total light distribution of a pixel headlamp includes: providing a texture comprising a two-dimension array having coordinates; providing a maximum energization individual light distribution for each individual light source of a plurality of individual light sources; determining a maximum energization data structure taking into account all the maximum energization individual light distributions and the texture; providing a relative energization value for each individual light source; and determining the total light distribution, taking into account the maximum energization data structure and the relative energization values of the individual light sources.