Soil moisture sensor smart is a general term for monitoring soil moistures. Can be divided into: soil moisture sensor, soil moisture meter, soil moisture meter, soil moisture meter, soil moisture sensor. Soil temperature sensor, soil salinity sensor. Soil water content has two expression methods: weight water content and volume water content (volume water content). The weight water content is measured by the soil drying method. The water content measured by the soil moisture sensor is volumetric water content. That is, the soil moisture sensor is an instrument that measures the proportion of moisture per unit of total soil volume. Some soil moisture sensors can measure the moisture content of the soil at the same time. Three parameters of soil temperature and total salt content in soil.
The soil moisture sensor adopts the FDR frequency domain reflection principle. FDR (Frequency Domain Reflectometry) is an instrument used to measure soil moisture. It uses the principle of electromagnetic pulse to measure the apparent permittivity of the soil according to the frequency of electromagnetic waves propagating in the medium. So as to get the relative water content of the soil. FDR has the advantages of simple and safe, fast and accurate, continuous fixed point, automation, wide range, less calibration and so on. It is a recommended soil moisture measuring instrument.
The benefits of soil sensors are obvious. Due to the difference in resistance or conductivity. Can clearly reflect the information of soil moisture and soil particle composition. It also draws intuitive conclusions on density, pH, accumulation of nutrients, and temperature. Through the network construction in the farm, the real-time parameters collected by the soil sensor are transmitted to the host computer. Cooperate with the system installed on the machine. Realize the automatic control spraying of chemical fertilizers and pesticides.