Light Control System Minimizing Brightness Fluctuations
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Solution Overview
Problem
Conventional light control methods experience undesirable transient behavior with periodic brightness fluctuations when adjusting multiple luminaires to achieve specific brightness levels in adjacent or overlapping areas, leading to unpleasant lighting conditions.
Innovation Solution
A method where control values for luminaires are calculated to minimize total deviations from target brightness values, transmitted only after completion, and iteratively adjusted if necessary, using a two-stage calculation process to ensure optimal energy efficiency and stability, with a self-learning simulation-based optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional regulation is used to adjust brightness values in multiple areas, then the desired brightness target values can be achieved, but transient behavior with periodic brightness fluctuations occurs
Solution Approach 1:
The patent applies preliminary action by calculating all control values for multiple luminaires simultaneously before transmission, based on current brightness measurements and target values. This pre-calculation approach determines the complete set of control values in advance, avoiding sequential adjustments that cause transient fluctuations. The control unit computes optimal control values for all lights before sending them, ensuring stable transition to target brightness without periodic oscillations.
2Productivity
If control values are transmitted continuously during regulation, then brightness adjustments can be made, but unpleasant transient behavior is generated
Solution Approach 1:
The patent merges the control of multiple luminaires into a single simultaneous transmission event. Instead of adjusting each luminaire separately or continuously, the control unit calculates and transmits all control values together in one operation. This consolidation eliminates the sequential adjustment process that generates transient fluctuations, achieving both fast response and stable lighting transition.
3Area of stationary object
If multiple lights control adjacent or overlapping areas, then comprehensive illumination coverage is achieved, but interference between areas occurs
Solution Approach 1:
The patent implements feedback by continuously measuring actual brightness values in multiple areas and using these measurements to calculate updated control values. The control unit receives brightness information from sensors, compares actual values with target values, and recalculates control values for all luminaires based on the current system state. This closed-loop feedback ensures accurate brightness control despite overlapping illumination areas and mutual interference between lights.
Data Source
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AI summary
The method involves determining an actual brightness value in regions to be illuminated. Control values for lights (107-109) are calculated in such a manner that totality of deviations of the calculated brightness value from the control values reaches a minimum. The control values are transmitted to the lights, where the calculation of the control values takes place by an iteration process. The control values are calculated and transmitted when the deviations of the calculated brightness value from the control values exceed a bar. An independent claim is also included for a light control system for controlling lights to realize a brightness value provided in regions.