The overall design basis of soil moisture monitoring system

As a large agricultural country, China's agriculture has gradually entered the modern technology production model period, and actively cooperate with the application of computer technology and other corresponding technologies are very important. The droughts that have appeared in the market in these years have had a major impact on China’s economic development. For example, the drought that occurred again in Henan Province this summer without water use will definitely affect the economy of the region. Therefore, how to increase the irrigation water in agricultural production? Utilization is a problem that we need to think and study all the time. In today's agricultural technology, the construction of soil moisture monitoring system has played an important role in the application of irrigation water and the rational use of water resources.

Soil moisture is the common name for the soil moisture content in farmland, and it is an important factor affecting crop growth. The soil moisture content is constantly changing. Therefore, the advanced construction of the soil moisture monitoring system needs to be monitored in real time, so that the collected information can be used. The change of soil moisture is not only related to the characteristics of soil, but also affected by precipitation, irrigation, evaporation, water energy of the lower boundary of the root layer, and its dynamic change is also a complex system problem.

Overall design of soil moisture monitoring system The system consists of four modules: data acquisition module, data transmission module, human-machine interaction module and database module. The data acquisition module uses sensors to collect soil moisture data such as soil temperature and humidity. The GPS device collects data such as latitude and longitude of the monitoring points, and realizes mutual transmission of data in a single monitoring area through the zigbee network. Using GPRS technology, long-distance transmission of data between zigbee networks and zigbee networks and intelligent terminals is realized. In the intelligent terminal of the soil moisture monitoring system, a browser is used in combination with GIS technology to display data to users in different forms. The back-end database is used to process, store, and analyze data, query, and statistics.

The main basis of the soil moisture monitoring system for monitoring sites includes: geographical location; soil type and soil physical properties; administrative divisions, surrounding landforms; species and scope of crop cultivation; hydrogeological conditions: groundwater depth; irrigation conditions. The soil moisture monitoring point was placed in the place where the central block was flat, avoiding the low-lying and easily accumulated water.

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