Networked Adaptive Amber LED Wavelength Control for Dark-Sky Lighting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional LED lighting systems contribute significantly to light pollution, obscuring the night sky and disrupting ecosystems and wildlife, and have adverse effects on human health due to non-dark sky compliant lighting that emits light upwards or horizontally.
Innovation Solution
An advanced LED lighting system with adaptive wavelength control using amber LEDs, directional lighting, and a mesh network for coordinated light distribution, incorporating photodetectors and machine learning algorithms to adjust light intensity and wavelength based on environmental conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If traditional LED lighting systems emit light in all directions including upwards and horizontally, then the lighting coverage area is maximized, but light pollution increases and dark sky compliance is violated
Solution Approach 1:
The patent applies local quality by directing light emission in specific directional zones (downwards and horizontally) while blocking upward emission. Different spatial regions receive different light treatments, with downward-directed light providing illumination and upward-directed light being blocked by shields, thus resolving the contradiction between coverage area and light pollution.
Solution Approach 2:
The lighting system is segmented into multiple LED modules with independent directional control. Each module can be independently adjusted to optimize light distribution patterns, allowing the system to maintain broad coverage while minimizing upward light emission that causes pollution.
2Device complexity
If LED wavelength is not precisely controlled, then the system complexity is reduced, but dark sky compliance and ecological responsibility are compromised
Solution Approach 1:
The patent employs parameter changes by dynamically adjusting LED operating parameters (current, voltage, pulse width modulation) to maintain wavelength within the compliant range of 560-680nm. This ensures ecological responsibility while managing system complexity through software-based control rather than hardware complexity.
Solution Approach 2:
The system incorporates feedback mechanisms where photodetectors monitor emitted light wavelength and provide feedback to the control system. This closed-loop control automatically adjusts LED parameters to maintain compliance, resolving the contradiction between compliance requirements and system complexity through intelligent control.
3Device complexity
If LED operating current and voltage are not adjusted for temperature variations, then the control system is simpler, but wavelength drift occurs and dark sky compliance is violated
Solution Approach 1:
The patent implements feedback control by using temperature sensors to monitor LED junction temperature and automatically adjusting operating parameters to compensate for thermal drift. This maintains wavelength stability and dark sky compliance while managing complexity through integrated sensor-controller systems.
Solution Approach 2:
The system performs preliminary characterization of LED wavelength versus temperature relationships during manufacturing or initial operation. This pre-established data is stored and used by the control system to proactively adjust parameters before significant drift occurs, maintaining reliability without requiring complex real-time compensation algorithms.
4Measurement precision
If photodetectors and machine learning algorithms are integrated for real-time wavelength and intensity control, then dark sky compliance precision is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical adjustment mechanisms with software-based control and machine learning algorithms. Photodetectors provide precise optical measurements, while algorithms process this data to automatically adjust LED parameters, achieving high precision compliance through intelligent software rather than mechanical complexity.
Solution Approach 2:
The system implements self-service through autonomous control where the integrated photodetectors and machine learning algorithms automatically monitor, analyze, and adjust lighting parameters without external intervention. This maintains precision while managing complexity by making the system self-regulating.
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
Minimizes light pollution by ensuring light is directed downwards, reduces skyglow, and maintains consistent light quality and intensity while being ecologically responsible, balancing human-centric lighting with environmental considerations.
Implementation Method 1
emitting light from an led at a specific wavelength
Implementation Method 2
detecting the specific wavelength using a photodetector
Data Source
AI summary
Advanced led lighting system with adaptive wavelength control and network integration is disclosed herein. An example method includes emitting light from an LED at a specific wavelength, primarily focusing on amber LED light; detecting the emitted light wavelength using a photodetector; analyzing the detected wavelength for deviations from a target wavelength of approximately 592 nanometers; and adjusting the current and voltage supplied to the LED based on the detected wavelength to achieve the target wavelength.