Design And Implementation Of NB-WUSN System For Soil Temperature And Moisture Monitoring

With the development of IOT technology,its application in agriculture is becoming more and more advanced.For plant growth process,soil temperature and moisture play a decisive role.If we can sense the soil environment throughout the plant growth process,we can implement corresponding management measures for the planting process through the real-time temperature and moisture content of the soil to realize the fine management of agricultural production.At present,most of the application engineering solutions use the IOT sensing network on the ground,which has disadvantages such as unfavorable to automated farming,easy to damage the equipment and poor anti-theft and anti-damage.In this paper,a soil temperature and moisture monitoring system that can be deployed inside the soil is designed in conjunction with the practical management needs of smart agriculture precision management.The main work of this paper is as follows.（1）Most conventional WUSNs use LoRa technology,but since Lo Ra technology works at unlicensed frequencies,it needs to establish its own gateway in practical use,which is not convenient for providing management and cross-regional services by commercial base station networks.And this paper evaluates the feasibility and effectiveness of NB-Io T as a means of WUSN data transmission in underground soil through comparative experiments.It is proved that it can replace Lo Ra as a reliable communication technology solution for next-generation WUSN.（2）The overall design framework of the system is proposed with the actual application scenario,and an NB-Io T-based underground soil temperature and moisture collection node is completed,which can realize periodic collection of soil moisture and temperature information at the location of the terminal node and upload the data to the cloud via NB-Io T.（3）Based on the cloud service of NB-IoT,we have developed Soil-View platform which is adapted to the front-end soil sensing function and provides users with targeted soil management service in the cloud.