Dynamic Spectrum LED Structure for Biomass Growth
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current LED-based grow lights lack efficiency and fail to fully optimize plant growth due to non-overlapping emission spectra with photobiological processes, lack of adjustable spectrum capabilities, and inadequate control modes such as pulsed illumination, which limits their effectiveness in various biomass growing applications.
Innovation Solution
An integrated LED structure with adjustable emission characteristics, utilizing a substrate with optically isolated and electrically connected light emission areas, and wavelength conversion materials, allowing for tuning of the emission spectrum through common current control to match different photobiological requirements across various growth phases and plant types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional LED luminaires are used for plant illumination, then the lighting system is simple and easy to operate, but the emission spectrum does not overlap well with photobiological processes and efficiency is low
Solution Approach 1:
The LED luminaire is divided into multiple independent LED modules, each emitting at a specific wavelength optimized for photobiological processes. This segmentation allows the emission spectrum to be tailored to match plant absorption spectra while maintaining operational simplicity through modular design.
Solution Approach 2:
The LED luminaire is designed to provide multiple functions: it can adjust emission spectrum to match different photobiological processes, control illumination timing for pulsed light effects, and optimize energy efficiency. This multi-functionality resolves the contradiction by integrating spectrum control and timing control into a single system that maintains ease of operation while dramatically improving lighting efficiency.
2Adaptability or versatility
If fixed spectrum LED lights are used, then the device structure is simple, but the lights cannot meet different requirements of various biomass growing applications
Solution Approach 1:
The LED luminaire incorporates dynamic control capabilities that allow the emission spectrum and illumination timing to be adjusted according to different plant growth requirements. The system can switch between continuous and pulsed illumination modes and adjust spectral composition based on photobiological process needs, providing adaptability without requiring complex external control systems.
Solution Approach 2:
The system enables parameter changes in the emission spectrum by controlling different LED modules with different wavelengths. By adjusting the intensity and timing of individual wavelength components, the luminaire can optimize the emission spectrum for various photobiological processes while maintaining a relatively simple device structure through integrated control.
3Use of energy by moving object
If continuous illumination is used, then the lighting system is simple to operate, but pulsed illumination modes that could optimize energy usage are not utilized
Solution Approach 1:
The LED luminaire is designed to provide periodic pulsed illumination in addition to continuous operation modes. The pulsed illumination synchronizes with photobiological process timing requirements, optimizing energy usage by delivering light at critical moments in the photosynthetic cycle. This periodic action is integrated into the luminaire's control system, maintaining ease of operation while dramatically improving energy efficiency.
Solution Approach 2:
The system ensures continuous optimization of photosynthetic processes by providing uninterrupted illumination coverage through coordinated operation of multiple LED modules. The pulsed illumination modes complement continuous operation to maintain optimal energy transfer to chlorophyll throughout the photobiological cycle, ensuring continuous useful action without requiring complex operational controls.
4Illumination intensity
If single wavelength LED sources are used, then the emission spectrum is pure and well-defined, but the spectrum cannot be matched with broader photobiological requirements
Solution Approach 1:
The LED luminaire merges multiple LED modules with different emission wavelengths into a single integrated lighting system. Each module maintains its pure, well-defined spectral characteristics, but their combination creates a composite spectrum that matches broader photobiological requirements. The merging is achieved through optical integration and coordinated control, resolving the contradiction by maintaining spectral purity at the module level while achieving spectrum matching at the system level.
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
Enables flexible and efficient biomass growth by providing adjustable spectrum and pulsed light emission, optimizing growth conditions for diverse plants without the need for expensive feedback systems, achieving high spectral uniformity and energy efficiency.
Implementation Method 1
light emitting semiconductor source of a first type mounted in the emission area(s), and a light emitting semiconductor source of a second type mounted in the emission area(s)
Implementation Method 2
a wavelength conversion material of a first type formed on the top of the first type of light emitting semiconductor sources and a wavelength conversion material of a second type formed on the top of the second type of light emitting semiconductor sources
Data Source
AI summary
An integrated LED structure and a method of adjusting the emission spectrum of an integrated LED structure, for photobiological process is disclosed. The structure comprises a substrate; a plurality of optically isolated and electrically non-independent light emission areas integrated on the substrate; a light emitting semiconductor source of a first type mounted in the emission area(s); a light emitting semiconductor source of a second type mounted in the emission area(s); an electrical circuit layer for connecting the light emitting semiconductor sources in serial fashion for each emission area; and wavelength conversion materials. The emission areas are controlled with a common electrical drive current, and the emission output can be tuned by adjusting the common current value, to enable use of one luminaire for a large variety of biomass growing applications.