Adaptive LED Grow Lighting With Adjustable Optics and Cooling
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Solution Overview
Problem
Conventional plant growth lighting systems lack adaptability to changing growth phases, generate excessive heat, provide uneven light distribution, are vulnerable to power disruptions, and lack integration with environmental monitoring systems, leading to inefficiencies and suboptimal plant growth.
Innovation Solution
A programmable lighting system with individually addressable LEDs, adjustable optical lenses, dynamic positioning, and integrated cooling systems, along with sensors and emergency backup, to provide tailored light spectra, uniform distribution, and optimal temperature management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional fixed-spectrum lighting systems are used, then device complexity is reduced, but adaptability to different plant growth phases deteriorates
Solution Approach 1:
The lighting system is divided into multiple independently controllable LED modules, each emitting at specific wavelengths (e.g., 450nm blue, 660nm red, 730nm far-red). This segmentation allows the spectrum to be dynamically reconfigured for different plant growth phases without requiring complete system replacement, resolving the contradiction between adaptability and complexity.
Solution Approach 2:
The patent implements dynamic spectral adjustment through programmable LED controllers that can modify intensity ratios of different wavelengths in real-time based on plant growth stage requirements. This dynamic capability enables the system to adapt to changing plant needs while maintaining a fixed physical hardware configuration, balancing adaptability with device simplicity.
2Productivity
If high-intensity lighting is used to enhance plant growth, then productivity increases, but heat generation worsens
Solution Approach 1:
The patent extracts the heat management function as a separate subsystem with active cooling mechanisms (fans, heat sinks, or liquid cooling). This isolation of thermal management allows the lighting elements to operate at high intensity for maximum plant growth benefit while the dedicated cooling system handles heat removal, resolving the contradiction between productivity and temperature control.
Solution Approach 2:
The patent introduces thermal interface materials and heat dissipation structures as intermediaries between the LED light sources and the cooling system. These intermediaries efficiently transfer heat away from the lighting elements without affecting light output, enabling high-intensity operation while maintaining acceptable operating temperatures.
3Stability of the object's composition
If fixed-position lighting is used, then device complexity is reduced, but uniformity of light distribution deteriorates
Solution Approach 1:
The patent employs multiple lighting zones with independently adjustable intensity and spectral composition. Each zone is optimized for the specific requirements of plants in that location, creating local quality variations that result in overall uniform light distribution across the entire cultivation area. This localized control approach achieves uniformity without requiring complex mechanical positioning systems.
4Productivity
If continuous operation is required for plant growth, then productivity is maintained, but vulnerability to power disruptions worsens
Solution Approach 1:
The patent incorporates battery backup systems and/or connection to alternative power sources that are pre-configured and ready to activate immediately upon power failure. This preliminary preparation ensures continuous lighting operation during power disruptions, maintaining plant growth productivity without requiring complex real-time decision-making or manual intervention.
5Measurement precision
If fixed-spectrum lighting is used, then manufacturing precision requirements are reduced, but precision in targeting specific photoreceptors deteriorates
Solution Approach 1:
The patent utilizes programmable LED drivers that can precisely control the intensity and timing of specific wavelength emissions. By changing operational parameters (current, pulse width, frequency) rather than physical LED characteristics, the system achieves precise photoreceptor targeting with standard off-the-shelf LED components, resolving the contradiction between measurement precision and manufacturing precision requirements.
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
Enhances plant growth by optimizing light spectra and distribution, maintaining optimal temperatures, ensuring continuous operation, and integrating with environmental controls, thereby improving yield and quality across various cultivation settings.
Implementation Method 1
A plurality of light emitting diodes may be individually addressable to emit light at a specific wavelength
Implementation Method 2
Plants utilize different photoreceptors (such as phytochromes, cryptochromes, and phototropins) that respond to specific wavelengths of light
Implementation Method 3
A plurality of optical lenses may be individually associated with respective ones of the plurality of light emitting diodes, wherein each optical lens may be adjustable relative to its associated light emitting diode to modify a focus of the emitted light
Implementation Method 4
A cooling system may be integrated with the plurality of light emitting diodes, the cooling system selected from the group consisting of a liquid cooling system and a Peltier cooling system
Implementation Method 5
the cooling system selected from the group consisting of a liquid cooling system and a Peltier cooling system
Data Source
AI summary
An apparatus for plant growth illumination may include light emitting diodes (LEDs) configured to emit light in a spectrum between 300 nm and 800 nm. Lenses may be individually associated with respective ones of the LEDs, and each lens may be adjustable relative to its associated LED to modify a focus of the emitted light. A cooling system may be integrated with the plurality of LEDs. The apparatus may be configured to maintain an operating temperature of the LEDs at a predetermined value. A control system may adjust a distance between each optical lens and its associated LED based on sensor input indicating a distance from the LED to a plant canopy. The control system may adjust emitted light intensity and footprint by moving the optical lens closer to or further from its associated LED.