Facility tomato supplemental lighting adjustment and control method and system based on growth model

Abstract

Disclosed is a facility tomato supplemental lighting adjustment and control method based on a growth model. Three growth stages of the tomato seedling stage, the flowering stage and the fruiting stage are selected, the tomato leaf net photosynthetic rates at different temperatures and with concentrations of carbon dioxide and light intensities are measured, corresponding light saturation points at different temperatures and with concentrations of carbon dioxide are obtained, and a tomato optimized light saturation point model is built; the temperature, the concentration of carbon dioxide and the light intensity in the tomato growth environment are monitored in real time, whether the current light intensity is at the light saturation point corresponding to the current temperature and the current concentration of carbon dioxide is judged according to the growth stage of tomatoes and the tomato optimized light saturation point model, and if not, an LED light source is used for light supplementation until the light intensity reaches the light saturation point. The invention further provides a facility tomato supplemental lighting adjustment and control system based on the growth model, intelligent and quantitative light supplementation of the tomatoes is achieved, and great significance is brought to energy-saving and high-efficiency production of the facility tomatoes.

Description

technical field [0001] The invention belongs to the technical field of agriculture, and in particular relates to a growth model-based method and system for controlling light supplementation of facility tomatoes. Background technique [0002] At present, the total production of facility agriculture in my country accounts for 90% of the world's total, but compared with developed countries, there are still defects such as low overall technological content and insufficient supporting equipment, especially in the control of crop lighting environment, there are single monitoring methods and technologies, and control accuracy Poor, poor scalability, high energy consumption, difficult deployment and maintenance, etc., but the quality of light conditions directly affects the yield and quality of crops. [0003] In facility tomato planting, fluorescent lamps, fluorescent lamps, etc. are usually used as supplementary light sources, which consume a lot of energy and increase the cost of ...

AI Technical Summary

Problems solved by technology

[0002] At present, the total production of facility agriculture in my country accounts for 90% of the world's total, but compared with developed countries, there are still defects such as low overall technological content and insufficient supporting equipment, especially in the control of crop lighting environment, there are single monitoring methods and technologies, and control accuracy poor scalability, high energy consumption, difficult deployment and maintenance, etc., but the quality of light conditions directly affects the yield and quality of crops

[0003] In facility tomato planting, fluorescent lamps, fluorescent lamps, etc. are usually used as supplementary light sources, which consume a lot of energy and increase the cost of supplementary light; the supplementary light method mostly adopts the method of constant light intensity, without considering the effects of light intensity, temperature, carbon dioxide, etc. The comprehensive influence of tomatoes, so the phenomenon of insufficient or excessive light supplementation has been caused, and even light suppression and light destruction, and caused a certain degree of energy waste, which further caused energy waste; control systems often use The single-chip microcomputer is regulated, which limits the functions that the system can realize, and the operability and scalability are poor

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