Spectral Illumination Control for Light Source Degradation Compensation
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Solution Overview
Problem
Illumination apparatuses often fail to maintain consistent illumination over time due to degradation of light sources, leading to inefficiencies.
Innovation Solution
The method compensates for light source degradation by adjusting electric power supply to maintain the desired overall spectral distribution of light, using sensors to measure luminous power and implementing a system that increases power to light sources as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If light sources are operated continuously over time, then illumination duration is extended, but light source degradation occurs leading to inconsistent illumination
Solution Approach 1:
The system employs sensors to continuously monitor the actual spectral distribution of light emitted by the illumination apparatus. This measured data is fed back to the controller, which automatically adjusts the electric power supplied to each light source to compensate for degradation. This closed-loop feedback mechanism ensures that illumination consistency is maintained over extended operational periods despite light source aging.
Solution Approach 2:
The system dynamically changes the operating parameters (electric power levels) of individual light sources based on their degradation state. By adjusting the power supplied to each light source according to its specific degradation characteristics, the system compensates for efficiency losses and maintains consistent spectral distribution and illumination levels over time.
2Illumination intensity
If electric power is increased to compensate for light source degradation, then luminous power is maintained, but energy consumption increases
Solution Approach 1:
Instead of uniformly increasing power to all light sources, the system applies localized power adjustments to individual light sources based on their specific degradation levels. Each light source receives precisely the amount of additional power needed to compensate for its own degradation, avoiding unnecessary energy consumption in light sources that have not yet degraded significantly.
Solution Approach 2:
The system applies partial compensation through power adjustment rather than excessive action. By using sensors to measure actual degradation levels and applying only the necessary power increase to maintain target luminous power, the system avoids the energy waste that would result from uniformly over-powering all light sources.
3Adaptability or versatility
If multiple light sources with different spectral distributions are used, then spectral flexibility is improved, but maintaining desired overall spectral distribution becomes more complex
Solution Approach 1:
The system uses spectral sensors to measure the actual overall spectral distribution produced by the combination of multiple light sources. This measured spectral data is fed back to the controller, which automatically adjusts the power levels of individual light sources to compensate for degradation and maintain the desired spectral distribution. This feedback mechanism simplifies the complexity by automating what would otherwise require manual spectral balancing.
Solution Approach 2:
The controller is designed to universally manage multiple light sources with different spectral characteristics through a single integrated system. It simultaneously performs degradation compensation, spectral distribution optimization, and power management for all light sources, reducing operational complexity despite the diversity of light source types.
Data Source
AI summary
According to at least one embodiment, there is disclosed a method of controlling at least one illumination apparatus comprising a plurality of light sources operable to emit a plurality of different spectral distributions of light, each light source of the plurality of light sources operable to emit a respective one of the plurality of different spectral distributions of light, the method comprising compensating for a degradation of at least one of the plurality of light sources emitting one of the plurality of different spectral distributions of light, wherein compensating for the degradation of the at least one of the plurality of light sources comprises: increasing an electric power supplied to the at least one of the plurality of light sources; and reducing a difference between an overall spectral distribution of light emitted by the plurality of light sources and a desired overall spectral distribution of light.