Research On The Design And Multi-objective Control Of Greenhouse Monitoring System Of Internet Of Things

In recent years,the greenhouse,which can provide high-quality agricultural products around the clock,has facilitated people's life,improved people's living standards,and has been rapidly promoted and applied.However,limitations have also been exposed in its development process.The yield and quality of crops in traditional greenhouse are more dependent on the traditional planting experience and artificial planting mode.Lack of monitoring of temperature,humidity and other environmental factors in the greenhouse,and lack of accurate control of the greenhouse and energy consumption.How to monitor the temperature,humidity and other environmental factors inside the greenhouse and reduce energy consumption,control costs,has become a problem in front of people.At the same time,most of the traditional greenhouse monitoring systems use wired monitoring systems,which must transmit control signals through physical lines and need to lay intricate communication cables.Due to various wiring and high failure rate,the early wiring costs,as well as the later operation costs and maintenance costs are extremely high.The biggest feature of wireless transmission and intelligent control used in the greenhouse monitoring system of the Internet of things is that there is no need for a line,so as to avoid the drawbacks of the wired monitoring system.Compared with the wired monitoring system,building the Internet of things greenhouse monitoring system is the best choice.In this paper,through the Internet of things technology and the method of combining multi-objective control with greenhouse,the Internet of things technology is used for the specific design of the greenhouse monitoring system of the Internet of things.Through the Internet of things greenhouse monitoring system to collect specific data of greenhouse crops,we will greenhouse environment temperature,humidity,carbon dioxide concentration and other control objects as a multi-objective,the quality of control,control precision,energy consumption and other control effects as a multi-objective.The multi-objective control methods of temperature,humidity,control precision and energy consumption are studied.In this paper,a wireless Internet of things greenhouse monitoring system is designed and implemented,and Zig Bee wireless networking technology is adopted for data collection and collection.Based on GPRS mobile network,wireless remote transmission of information is realized.A mobile terminal based on the Android system is designed.The experimental results show that the data transmission is normal and correct,which meets the user's demand for real-time viewing of crop growth,observation and storage of greenhouse climate data through this mobile terminal.The mobile terminal shows the temperature and humidity range most suitable for crop growth.There are many control objects and complex control for greenhouse environment,and there are conflicting relations among multiple targets of greenhouse environment,which makes it more difficult to implement precise control for optimization control requirements.We propose a multi-objective control method based on nsga-ii genetic algorithm to solve the problem of multi-objective control object conflict and find the balance between the control precision and energy consumption of greenhouse...