Plant Cultivation Light Module for Targeted UV Phytochemical Control
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Solution Overview
Problem
Conventional methods fail to effectively increase the content of specific phytochemicals in plants, despite increasing total phytochemical content.
Innovation Solution
A light source module for plant cultivation comprising a main light source unit and an auxiliary light source unit that emits UVB and UVC, controlled by a controller to supply specific types and cumulative doses of auxiliary light to enhance phytochemical content, particularly ginsenosides in shade plants like sprout ginseng.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional stress methods are applied to plants, then total phytochemical content increases, but the content of specific target phytochemicals does not effectively increase
Solution Approach 1:
The patent applies different wavelengths of UV light (UVB and UVC) to different stages or aspects of plant cultivation to selectively enhance specific phytochemical production. The controller adjusts the spectral composition and intensity of auxiliary light sources to target specific phytochemical pathways, thereby achieving precise enhancement of desired compounds rather than uniform increase across all phytochemicals.
Solution Approach 2:
The system dynamically adjusts light parameters including wavelength, intensity, and duration through the controller to optimize specific phytochemical production. By changing the spectral parameters of auxiliary light sources and adjusting exposure timing relative to harvest, the system precisely controls the production of target phytochemicals such as ginsenosides, distinguishing specific compound enhancement from general stress response.
2Manufacturing precision
If auxiliary UV light is added to increase specific phytochemicals, then device complexity increases
Solution Approach 1:
The auxiliary light sources serve multiple functions: they can emit different wavelengths (UVB and UVC) to target different phytochemical pathways, adjust intensity to control stress levels, and operate at different times relative to harvest to optimize specific compound production. This multi-functionality allows a single added component to achieve precise phytochemical enhancement without proportionally increasing overall system complexity.
Solution Approach 2:
The controller acts as an intermediary that manages the complexity of coordinating multiple light sources, wavelengths, and timing parameters. By centralizing control logic, the system can handle the complexity of precise light delivery without requiring complex mechanical or structural modifications to the plant cultivation setup itself.
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 light source module effectively increases the content of specific phytochemicals such as ginsenosides in sprout ginseng by optimizing light treatment, achieving significant increases in certain ginsenosides like Re, Rc, and Rd with appropriate cumulative doses of UVB and UVC.
Implementation Method 1
The auxiliary light source unit emits auxiliary light including at least one selected from among UVB and UVC to increase the content of phytochemicals in the plant
Data Source
AI summary
A light source module for plant cultivation includes a main light source, an auxiliary light source unit, and a controller. The main light source unit emits background light which is visible light for growth of a plant. The auxiliary light source unit emits auxiliary light including UVB, UVC, or both to increase the content of phytochemicals in the plant. The controller controls operation of the main light source unit and the auxiliary light source unit based on a control signal.