Indoor Lighting CCT Adjustment via Outdoor Light Feedback
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Solution Overview
Problem
Existing indoor lighting systems fail to adapt to outdoor lighting conditions, such as time of day and weather, resulting in suboptimal lighting quality that does not match outdoor daylight, which can affect Circadian Rhythm and overall lighting quality.
Innovation Solution
A lighting system comprising a lighting fixture with a receiver to receive a lighting control message from a photo sensor device, which adjusts the Correlated Color Temperature (CCT) of the illumination light based on sensed outdoor light conditions, ensuring the indoor light quality matches the outdoor daylight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If indoor lighting intensity is adjusted independently of outdoor conditions, then lighting control flexibility is improved, but lighting quality matching with outdoor daylight deteriorates
Solution Approach 1:
The system uses a photo sensor device to continuously monitor outdoor lighting conditions (CCT and illuminance) and feeds this information back to the lighting controller, which automatically adjusts the indoor lighting fixture's CCT and intensity to match outdoor conditions, resolving the contradiction between control flexibility and quality matching
Solution Approach 2:
The system dynamically changes the CCT parameter of the indoor lighting fixture based on outdoor conditions detected by the photo sensor, allowing the lighting quality to adapt and match outdoor daylight characteristics while maintaining operational flexibility through automated control
2Adaptability or versatility
If CCT is changed independently of outdoor lighting conditions, then lighting adaptability is improved, but Circadian Rhythm maintenance deteriorates
Solution Approach 1:
The photo sensor device provides continuous feedback on outdoor lighting conditions to the lighting controller, which adjusts the indoor lighting CCT in real-time to match outdoor conditions, ensuring both adaptability to different times of day and reliable maintenance of Circadian Rhythm
Solution Approach 2:
The system transitions from static CCT settings to dynamic CCT adjustment that automatically adapts to changing outdoor lighting conditions throughout the day, improving both lighting adaptability and Circadian Rhythm maintenance by following natural light patterns
3Illumination intensity
If indoor lighting is illuminated independently of outdoor light levels, then lighting availability is improved, but energy efficiency deteriorates
Solution Approach 1:
The photo sensor device monitors outdoor illuminance levels and provides feedback to the lighting controller, which automatically adjusts or turns off indoor lighting when sufficient natural light is available, maintaining lighting availability when needed while improving energy efficiency by avoiding unnecessary artificial lighting
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides improved indoor lighting quality by dynamically adjusting the CCT of indoor lighting to match outdoor conditions, enhancing color perception and maintaining the Circadian Rhythm of occupants by closely matching the CCT of indoor and outdoor lighting.
Implementation Method 1
a light sensor circuit configured to sense multiple components of an outdoor light that are in multiple ranges of wavelengths
Implementation Method 2
Adjusting the illumination light by the lighting controller includes changing a Correlated Color Temperature (CCT) of the illumination light
Data Source
AI summary
A lighting fixture includes a light source that emits an illumination light and a receiver configured to receive a lighting control message from a photo sensor device. The lighting fixture further includes a lighting controller configured to adjust the illumination light based on the lighting control message. Adjusting the illumination light by the lighting controller includes changing a Correlated Color Temperature (CCT) of the illumination light.