Vehicle Illumination Controller Dynamics
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Solution Overview
Problem
Conventional circuit arrangements for illumination fields in vehicles struggle to seamlessly transition between desired luminous intensity distributions of individual modules and overall luminous intensity distributions across different vehicle states, often resulting in suboptimal overall illumination.
Innovation Solution
A method that uses open-loop and/or closed-loop controllers to continuously adjust the brightness of light sources in multiple modules, employing pulse width modulation and weighted determinations based on measured parameters like vehicle speed and distance to other objects, allowing for a smooth transition between individual and overall luminous intensity distributions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional controller selects only one of the two control options (individual module distribution or overall distribution), then the control system is simple, but the transition between different vehicle states results in suboptimal overall illumination
Solution Approach 1:
The controller dynamically transitions between different control modes based on vehicle state. It can operate in individual-module-optimized mode when stationary, in overall-distribution-optimized mode when moving, and in transition modes between these states. This dynamic adaptability allows the system to maintain optimal illumination quality across all operating conditions without requiring a fundamentally complex control architecture.
2Speed
If the control mode is abruptly switched between individual module distribution and overall distribution, then the response to vehicle state changes is fast, but the transition causes abrupt changes in illumination that affect observer perception
Solution Approach 1:
The patent ensures continuous and smooth transition between different control modes by gradually adjusting the brightness of individual light sources rather than abruptly switching modes. The controller continuously modifies the luminous intensity distribution, maintaining homogeneous appearance to observers during transitions. This continuous adjustment prevents noticeable flickering or abrupt changes in illumination quality while still responding quickly to vehicle state changes.
Data Source
AI summary
A method for operating a circuit arrangement is provided. An illumination field has at least one first module and one second module that each comprise at least one light source and a controllable switching element. An open-loop and/or closed-loop controller for the illumination field is provided, wherein the controllable switching elements are controlled by the open-loop and/or closed-loop controller such that switch-on times and/or switch-off times are defined for each light source by the open-loop and/or closed-loop controller and such that the open-loop and/or closed-loop controller controls one and/or more controllable switching elements of the modules to close during the switch-on times and to open during the switch-off times. The switch-on times and/or switch-off times are determined based on a desired luminous intensity distribution of the individual modules or a desired overall luminous intensity distribution.