Design And Realize Of The Monitoring System For The Aeroponic Stereoscopic Cultivation In Micro-environment

In view of the difficulties in the supply of fresh vegetables under special circumstances and special needs such as the South and Arctic scientific research and border post,the new three-dimensional cultivation model of aerosol is studied,and combined with modern automatic control technology,the control microenvironment aerosol is developed.Cultivate the monitoring system and explore new intelligent cultivation modes.The system can realize the automatic collection of environmental parameters and the intelligent control of the execution equipment,and realize the intelligent and scientific management of the threedimensional cultivation of the aerosol,so that the growth of the crop can be freed from the constraints of the harsh environment.Based on the summary of the research status of aerosol three-dimensional cultivation at home and abroad,this paper optimizes the design of the new threedimensional aerosol cultivation device to ensure the practicability and rationality of the cultivation device.The ANSYS software is used to simulate the piezoelectric coupling simulation.The multi-order vibration mode of the piezoelectric ceramic oscillator is obtained by modal analysis.The resonant frequency of the piezoelectric vibration of the piezoelectric ceramic disk is obtained by harmonic response analysis.Through theoretical analysis and experimental tests,The ultrasonic atomization sheet with the best atomization effect is selected to provide a theoretical basis for the ultrasonic atomization technology.Analyze the control requirements of the three-dimensional cultivation intelligent monitoring system of aerosol,determine the overall design scheme and framework structure of the monitoring system,take the STC15F2K60S2 singlechip microcomputer as the control core,and use PC as the centralized monitoring platform of the upper computer to realize the reasonable monitoring and control of parameters.According to the specific needs,the hardware and software of the monitoring system are designed,including the main control unit,data acquisition unit and execution equipment unit to realize the functions of data acquisition,data processing and device control of the system.The LabVIEW software is used to design the upper computer monitoring interface,which includes functions such as user login,parameter monitoring,parameter setting,execution device control and historical data query.A temperature and humidity segmentation control method is adopted.When the difference from the target set value is large,the fuzzy control is used to realize fast decoupling control,so that the system can be quickly adjusted.When the temperature and humidity parameters reach the precise control domain,the fuzzy PID is utilized.Control strategy for more precise control of temperature and humidity.In the laboratory,a Micro-experimental platform was set up,and the controllable micro-environment aerosol three-dimensional cultivation monitoring system designed in this paper was debugged and tested.Through the experimental observation of 5 cultivation cycles of 6 months,the system structure is reasonable,the light intensity,carbon dioxide concentration,The parameters such as the temperature and humidity in the root zone and the pH of the nutrient solution are accurately collected,and the temperature and humidity outside the root zone can be stably controlled.The communication between the lower computer and the host computer is normal and the data transmission is reliable,and the monitoring platform has perfect functions.The feasibility and superiority of threedimensional cultivation of aerosol were verified by hydroponic and mist culture experiments of sprouts.