Layer-Specific Supplemental Lighting for Vertical Wrapper Tobacco
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Solution Overview
Problem
The current multi-layer cultivation of wrapper tobacco leaves in vertical facilities faces issues of insufficient light, leading to poor quality and reduced yield rates due to varying light availability across layers.
Innovation Solution
A supplemental lighting method is employed using a combination of specific light intensities and qualities, including red, blue, green, and yellow light, tailored for different growth phases of wrapper tobacco, to enhance light availability and quality in each layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-layer cultivation is implemented to improve space utilization, then space utilization efficiency is improved, but light availability for lower layers deteriorates
Solution Approach 1:
The patent segments the light spectrum into different wavelengths (red, blue, green, yellow light) and applies them differently to each cultivation layer. The supplemental lighting system provides wavelength-specific illumination to each layer, ensuring that lower layers receive adequate light intensity through targeted spectral segmentation rather than relying on uniform natural light distribution.
Solution Approach 2:
The patent implements local quality by providing tailored light conditions for each layer based on their specific needs. Different layers receive customized combinations of light wavelengths and intensities, with lower layers receiving enhanced supplemental lighting to compensate for reduced natural light penetration, thereby maintaining uniform growth conditions across all layers.
2Productivity
If multi-layer cultivation is implemented to increase yield, then production capacity is improved, but tobacco leaf quality deteriorates
Solution Approach 1:
The patent changes the parameters of light intensity and spectral composition to optimize tobacco leaf quality across all layers. By adjusting the intensity and wavelength distribution of supplemental lighting, the system maintains photosynthetic efficiency and metabolic processes necessary for high-quality leaf development, even in lower layers where natural light is insufficient.
Solution Approach 2:
The patent applies preliminary action by providing supplemental lighting before significant quality degradation occurs in lower layers. The system proactively compensates for light deficiency through targeted illumination, preventing the accumulation of negative effects such as poor photosynthesis, weak stem development, and reduced leaf quality that would otherwise occur in lower cultivation layers.
3Illumination intensity
If supplemental lighting is added to improve light availability, then light intensity is improved, but system complexity increases
Solution Approach 1:
The patent applies universality by designing a supplemental lighting system that serves multiple functions simultaneously: it provides illumination for photosynthesis, enables spectral customization for different growth stages, and maintains uniform light distribution across all layers. This multi-functional approach consolidates what could be multiple separate systems into a single integrated solution, reducing overall system complexity.
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
This approach significantly improves the yield rate and quality of wrapper tobacco leaves by optimizing light conditions, enhancing space utilization, and ensuring consistent growth across multiple layers.
Implementation Method 1
the light quality is obtained by a combination of at least two of red, blue, green, and yellow light
Data Source
AI summary
The present disclosure provides a supplemental lighting method for vertical multi-layer cultivation of wrapper tobacco leaves, including the following steps: providing multi-layer vertical facilities, facilities including at least one cultivation rack having a plurality of layers; and providing supplemental lighting systems to each rack layer. For each rack layer the light intensity and light quality provided by the corresponding supplemental lighting system are set respectively according to a determined growth phase of the tobacco leaves during the cultivation process. The process includes cultivation of tobacco leaves through growth phases comprising a clumping period, a vigorous growth period, and a maturity period. During the clumping period, the light intensity provided comprises a first light intensity setting. During the vigorous growth period, the light intensity provided comprises a third light intensity setting. During the maturity period, the light intensity provided comprises a second light intensity setting.