Research On Digital Farmland Information Monitoring System Based On Internet Of Things Technology

With the acceleration of the pace of urbanization in China,more and more agricultural workers flock to the cities,more and more idle arable land has been produced,which has prompted China's agricultural development from traditional agricultural production mode t o modern agriculture.The transformation of production mode and the concentration of agricultural land in the future will surely be the general trend.The state also attaches great importance to the transformation of China's agricultural production model and constantly proposes development strategies such as developing modern agriculture,facility agriculture,and precision agriculture.This research is carried out under these backgrounds.It is of great significance to develop a digital farmland information monitoring technology for the development model of agricultural development and the characteristics of agricultural land in China.The main research content of this thesis is a digital farmland information monitoring technology based on Internet of Things technology.The monitoring technology applies the Internet of Things technology to all aspects of agricultural production,realizes the interconnection between various links in the agricultural production process,and improve the efficiency of agricultural production effectively.The thesis first analyzes the current situation of agricultural production in China and lists the needs of agricultural development.The overall structure of the design of farmland information monitoring system is formulated according to the development needs.According to the overall structure of the system,the monitoring system is divided into information collection terminals and LoRa gateway and information monitoring platform.Then,the hardware design architecture was established,and the selection terminal sensor,GPS module and GPRS module were selected and circuit design.The peripheral circuit of LoRa communication module was designed.The microcontroller selects MSP430 series MCU,and the hardware structure and peripheral circuits of each functional module are designed in detail by Altium Designer software.The "solar + lithium battery" power supply mode is used to supply power to the system to ensure long-term operation of the system.Then,the thesis develops the software part of the digital farmland information collection technology,selects IAR Embedded Workbench development tool to write the development program,draws the main program flow chart and work sequence diagram of each acquisition node and function module,and designed a host computer software based on MySQL databasedesigns.Then,designs a multi-sensor based data fusion processing technology,and proposes an improved adaptive weighted fusion algorithm for farmland information processing to further improve the accuracy of data processing.Finally,the test environment of the system was built,and the main functions of the hardware part of the system and the main functions of the software part were tested.The whole system has high collection and transmission efficiency,low power consumption,stable and accurate acquisition and transmission,and wide collection area.The low cost and other characteristics of the host computer monitoring platform were demonstrated,further determining the feasibility of the design content.