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Soil Water Sensor Based on Standing Wave Ratio Method of Design and Development

Abstract : Soil moisture is one of the most important parameters in the soil properties, the traditional methods of soil moisture measurement is time-consuming. And it can’t meet the soil moisture measurement’s real-time and fast requirements. This paper analyzes the relationship between soil moisture and its dielectric properties, research the standing wave ratio method for measuring soil water content. Firstly, design hardware circuit, plate making, and welding circuit board, then insert the probe into the soil, by measuring the reflection coefficient, we can know the probe impedance which depend on the soil dielectric constant. At last we can find the internal relation between output voltage and soil water content, by measuring the multiple sets of different water content of soil.
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Yinli Xu, Weizhong Yang, Zhenbo Li. Soil Water Sensor Based on Standing Wave Ratio Method of Design and Development. 8th International Conference on Computer and Computing Technologies in Agriculture (CCTA), Sep 2014, Beijing, China. pp.720-730, ⟨10.1007/978-3-319-19620-6_78⟩. ⟨hal-01420289⟩

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