Research And Design Of Intelligent Irrigation System For Farmland Based On Internet Of Things

Agricultural irrigation is an important link in agricultural planting and production process,and plays a decisive role in improving grain production.The per capita water resources in China are scarce,but the phenomenon of large-scale flooding makes the waste of resources more serious.Although the application of pipeline irrigation technology in recent years has alleviated the waste of water resources to a certain extent,the emergence of large-scale farmland patterns has put forward the requirements of accuracy,automation and intelligence for irrigation technology.Aiming at the key problems of farmland irrigation and realizing the purpose of low cost,high energy saving and intellectualization of irrigation,this paper designs and studies an intelligent farmland irrigation system based on the Internet of Things,and discusses the technical and functional requirements of the system from the three technical levels of perception layer,network layer and application layer of the Internet of Things architecture.Intelligent irrigation system can accurately detect soil temperature and humidity,environmental temperature and humidity,carbon dioxide concentration,light intensity and other environmental parameters through sensor technology.The application of wireless sensor technology,including GPRS and Lora technology,completes the upload of collected information and the dispatch of upper computer control instructions.By combining the designed control circuit with the single-chip computer program,the operation mode of electrical equipment such as irrigation machine,tail gun and fertilizer pump can be precisely controlled.With the support of cloud service technology,the background receiving and receiving software and database are built,and the data are displayed by WEB and mobile phone.The three layers of the system are bidirectional transmission.The staff can also make effective decisions quickly according to the display and collection information,and then set instructions to remote control farm side equipment.Intelligent irrigation system of farmland based on Internet of Things integrates sensors,farmland equipment,control terminal and cloud service organically through wireless technology,which effectively enhances the modernization and automation of irrigation,reduces labor input,improves the utilization rate of water resources,and avoids pollution caused by excessive input of agricultural fertilizer.The intelligent irrigation system based on the Internet of Things designed in this paper has been operated and tested for a long time in the Vodar experimental field of Jinghai Economic Development Zone in Tianjin.It has achieved good results in the fields of irrigation,fertilization and environmental monitoring.The remote precise remote control has also been favored by customers.The project implementation results show that the intelligent farmland irrigation system designed in this paper has good adaptability and stability,and has carried out small batch production.