ABSTRACT
Existing plant filler lights generally have serious problems such as huge energy consumption, incomplete spectrum, mismatch with plant spectral demand, and poor sustainability. In order to solve these problems and to realize the concept of energy saving and intelligent management, this study proposes a solar-based plant fill light system for greenhouses. The system adopts the separate design of photovoltaic power generation and fill light control, and in order to improve the practicability of the plant fill light, we integrate the intelligent control technology as well as the Internet of Things (IoT) technology into the plant fill light. Combined with PC control, we are able to switch different spectra at any time following the different plants grown. Through numerical example analysis and experimental research, we verified the effectiveness of the system. The system successfully provides fill light function in greenhouses, further realizing the application of solar energy and optimizing energy use. This design provides a viable solution for supplemental light for greenhouse plants and helps to address the challenges of insufficient light, lack of sustainability and high labor costs for greenhouse plants.
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