Research On Wireless Sensor Network Technologies Of Farmland Environmental Monitoring Based On Thread Protocol

Wireless sensor networks for farmland environment monitoring are an essential research direction for intelligent agriculture,with the potential to revolutionize crop and land management.It can provide timely and accurate information about crop growth environments,reduce labor requirements,and increase the profitability of agricultural production.Although wireless sensor networks for farmland environment monitoring have seen rapid development,most cases require conversion between the sensor network and the existing network during the transmission of farmland environment data.This conversion process is often closely related to the specific data content of the farmland environment,increasing the complexity of network design.When the data content changes,the conversion process may need to be redesigned,thus limiting the potential for further extension and application of sensor networks in farmland environment.Therefore,this paper proposes a wireless sensor network based on Thread for farmland environment monitoring,optimizing the transmission process of farmland environment data with the Thread protocol’s native support for IP,and improving the scalability and stability of the network nodes in accordance with the specific conditions of the farmland environment.The main work of this paper is as follows:(1)The sensor node with Thread network communication and data acquisition functions in an agricultural environment is designed and implemented.The Thread network communication function of the sensor node is implemented based on Open Thread and NXP K32W061 microcontroller.At the same time,the data acquisition function of the sensor node with extended capabilities is implemented by utilizing multiple sensors and intermediate processing units.In addition,multiple power supply circuits including battery and solar power are designed for the sensor nodes to overcome the power supply limitations in farmland environment and to ensure long operating time of nodes.(2)The border router node with the ability to convert and route IP packets between different network interfaces(Thread,Ethernet,Wi-Fi)is designed and implemented.This node establishes a connection between the sensor network and the existing IP network,allowing end-to-end IP communication between devices situated in different networks.With both the sensor network and the existing network supporting IP,the node performs packet routing at the network layer,achieving decoupling from the specific data content of the farmland environment and ensuring excellent scalability and stability.(3)The public network transmission scheme for agricultural environment data is proposed based on the Alibaba Cloud Io T platform and the Thread network constructed in this paper.The scheme adopts Alibaba Cloud Io T platform as the data relay station,and based on the connection established between the Thread network and the existing IP network,the Io T platform access program with portability is designed to achieve the safe and convenient transmission of farmland environmental data.Based on this scheme,a farmland environment monitoring Web application is also designed,which can obtain and dynamically display farmland environment data,facilitating intuitive and timely monitoring of farmland environment.Through network formation,single point of failure,network performance and external network communication experiments,this paper verifies that the constructed Thread network has good robustness as well as latency performance and throughput performance,and also has the capability of IP-based end-to-end communication with external networks.Additionally,experiments are conducted on data collection and uploading from the sensor nodes,data subscription and display on the farmland environment monitoring Web application.The experimental results prove the usability of the wireless sensor network based on Thread for farmland environment monitoring.