Research On Farmland Information Collection And Water Saving Irrigation System

As time goes,the Sustainable Development Strategy becomes more and more popular.How to improve farmland production efficiency,economic and environmental benefits on the basis of limited natural resources and advanced technology has become a major issue that China must solve.The precision agriculture characterized by the integration of information technology and agricultural technology has become the key to solve these problems,and the collection of farmland information and intelligent control of crop irrigation is a hot research topic in agricultural modernization at present.This article refers to the Ministry of Agriculture’s requirements for the direction of future agric ultural development,developed a farmland information collection and water-saving irrigation system.The system includes the controller,the soil information collection node and the irrigation electromagnetic valve control part.The controller is composed of a microprocessor unit,a radio frequency coding and transmitting unit,a WiFi module and a touch screen.When the system is running,the microprocessor unit receives data from the soil information collection node through the WiFi module,receives the wa ter level information and the data collected from the small meteorological station through the 485 bus,such as the atmosphere temperature and humidity,the wind speed,the wind direction,the solar radiation and the rainfall.A controller will collect information processing and preservation of farmland for agricultural research,etc.;on the one hand according to the field information collection,combined with soil moisture and crop evapotranspiration for the variable fuzzy control query table,infer the crop irrigation time,and the RF communication control solenoid valve complete irrigation.Each soil information collection node includes the soil temperature and humidity sensor,the microprocessor,the WiFi module,the A/D conversion circuit and the power management circuit.The node uses the sensor to collect the soil information,receives the control instructions through the WiFi module and sends the collected data.The control part of the irrigation solenoid valve is mainly composed of the radio frequency receiving and decoding circuit,the solenoid valve drive circuit and the magnetic retaining solenoid valve.Through the test and Simulink system simulation,it shows that the system can realize the collection of farmland environmental information and the target of intelligent irrigation.The data transmission of WiFi communication is stable and reliable.The output of irrigation decision is accurate and effective,which can meet the water requirement of crops at different times and achieve the goal of wa ter saving.The work of this paper can be used for reference to improve the utilization rate of agricultural water resources and realize the high quality and efficient development of agriculture.