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The soil moisture monitoring system can be divided into three subsystems from the logical structure: data acquisition and transmission subsystems, data storage and management subsystems, and remote monitoring center software subsystems. Data Acquisition and Transmission Subsystem: The data acquisition node consists of a large number of sensor nodes deployed in the Citrus Garden. These nodes consist of acquisition nodes and a convergence node. The collection node is used to collect the soil moisture information in the citrus orchard and send it to the sink node through wireless communication.
As the core node of the entire network, the sink node transmits the collected information received from the soil moisture monitoring system to a gateway with an ARM core module. Through the Internet, the gateway transmits the collected information to the remote Web host. Also important is the data storage and management subsystem of the soil moisture monitoring system: the system receives and processes the information transmitted by the gateway and stores it in the database. In addition, the database also stores system information such as configuration information of wireless sensor networks, various attribute information of sensor nodes, and operator information.
The remote monitoring center software subsystem mainly monitors the entire system operation window for the soil moisture monitoring system. Since the system is a network application system based on the B/S architecture, it can realize different personnel, from different locations, with different access methods. Users can read database related data after logging in to the system through the client browser to implement the functions such as analyzing and querying the sensor node soil moisture collection information, querying and other functional operations, or data graphic drawing, and also to the soil moisture monitoring system. The sensor nodes in the operation and monitoring area are monitored and the sensor nodes are assigned to complete the corresponding tasks by issuing instructions.
Three important subsystems of soil moisture monitoring system
Soil moisture can also refer to the amount of water in the soil, which is the so-called soil moisture content. Measurement by the soil moisture monitoring system also means the amount of water in a specific soil. This is an important component of the soil itself. An important factor in soil fertility, but it is also a basic condition for the growth of family farm crops. How to achieve rapid and effective information on soil moisture, and how to achieve low-cost and high-reliability information transmission is an important research project of modern agriculture. Due to the special nature of the environment and production process, agricultural production makes information access to soil moisture look obvious. very difficult.