Design Of Wheat Intelligent Irrigation System Based On Internet Of Things

China has a large area of agricultural cultivation,and it has always been the use of artificial water hoses by the farmers.Therefore,water consumption for irrigation has always been very large.With the deterioration of the environment in recent years,the rivers and wells in most areas have dried up.Therefore,it is extremely urgent to increase the utilization rate of water resources and speed up the transformation of agriculture.The country has also called for the modernization of agriculture.With the introduction of national policies,more and more technologies have been introduced into the country,such as smart control,Internet of things technology,and cloud computing,etc.In view of the current situation,this dissertation uses a wheat field as an example to design a wheat intelligent irrigation system based on the internet of things.Wheat intelligent irrigation system based on internet of things mainly includes four parts: terminal monitoring equipment module,gateway module,intelligent irrigation decision model and interactive interface.The terminal monitoring equipment is used for monitoring the environmental parameters of the wheat and controlling the switch of the electromagnetic valve.This part mainly completes the hardware and software design of Zig Bee chip,all kinds of sensors and power modules.The gateway module is the protocol conversion device of the entire smart irrigation system.After analyzing,compressing,and integrating the data packets from the terminal monitoring module,the gateway module uses the 4G network to transmit to the upper computer.This part is mainly the hardware circuit design of Zig Bee,processor,4G module and the software workflow design of the gateway to process data.The intelligent irrigation decision model of the host computer mainly includes a rule model and a mathematical model.The rules model is designed based on the expert knowledge of wheat irrigation management and the experience of planters.The mathematical model is to use the Penman formula and the water balance equation to model the wheat water requirement and the required irrigation quantity.Both models can forecast and decide the irrigation of wheat,so as to achieve the purpose of water-saving irrigation.Finally,a monitoring interface that can be displayed in real time is designed so that the collected information and the irrigation decision can be more intuitively presented to the user.The IOT-based wheat intelligent irrigation system designed in this dissertation realizes wireless transmission in a combination of Zig Bee technology and 4G technology,and solves the problems of troublesome wiring and difficult maintenance in wired transmission.At the same time,the intelligent irrigation decision model of the system gives two irrigation decision-making methods based on different irrigation strategies,which improves the accuracy of wheat intelligent irrigation and provides a reference for wheat water-saving irrigation,and has certain practical significance.