The Design Of Farmland Irrigation System Based On Internet Of Things

China is a large agricultural country.At present it's a crucial time for China's agricultural development to transform from traditional agricultural to modern,as farmland irrigation efficiency ratio need to be improved.In general,agricultural intelligence in China is low.Traditional agricultural irrigation methods couldn't make rational use of water resources,to a certain extent,causing the waste of it.Precision irrigation of farmland can save water,improve the ratio of effective irrigation and increase the output of agricultural products.Currently,most of us adopt the cable transmission way to collect the data of the irrigation system,which provides lower adaptability and practicality,and difficult to repair.With the development of Internet of Things,wireless sensor technology is widely used,as wireless transmission is more flexible than cable.ZigBee technology brings much convenience,but the transmission distance is so short that it couldn't meet the need of the long-distance transmission of data.4G network could transmit data with long distance,high quality and high speed.Therefore,this dissertation designs a special farmland irrigation system,which not only using time series prediction,but also combining ZigBee technology with 4G technology.The whole study mainly includes three parts:Firstly,the soil moisture and farmland irrigation water demand shoud be calculated that using the time series forecasting method.In order to achieve the purpose of water-saving irrigation,obtaining the farmland irrigation intelligent analysis model of the system.Secondly,the ZigBee terminal monitoring node needs to be designed,which contains the hardware and software design of the master chip MC13213,terminal acquisition sensor and power supply module.This part mainly completes the collection of farmland environmental parameters.Finally,the hardware circuit and software working program of 4G and ZigBee gateway nodes need to be completed in this part.The hardware circuit mainly consists of three modules:ZigBee,4G and microprocessor.The 4G module selects ME3760 chip.The data transmission of heterogeneous network is also being discussed in this part.In this dissertation,the farmland irrigation system based on Internet of Things,using ZigBee and 4G wireless network technology and including the characteristics of two kinds of network technology,finally ensuring the reliable transmission of farmland environmental information.At the same time,the system uses the method of time series prediction to make effective forecast of farmland irrigation,and can achieve the purpose of saving water resources.The farmland irrigation system designed in this paper basically could complete the intelligent irrigation of farmland.