Jiang Mingliang, Lv Mouchao, Deng Zhong, Zhai Guoliang
Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Muye District, Xinxiang City Henan province, China.
Key Laboratory of Water-Saving Agriculture of Henan Province, Muye District, Xinxiang City Henan province, China.
PLoS One. 2017 Sep 8;12(9):e0184125. doi: 10.1371/journal.pone.0184125. eCollection 2017.
In a variety of agricultural activities, such as irrigation scheduling and nutrient management, soil water content is regarded as an essential parameter. Either power supply or long-distance cable is hardly available within field scale. For the necessity of monitoring soil water dynamics at field scale, this study presents a wireless soil moisture sensor based on the impedance transform of the frequency domain. The sensor system is powered by solar energy, and the data can be instantly transmitted by wireless communication. The sensor electrodes are embedded into the bottom of a supporting rod so that the sensor can measure soil water contents at different depths. An optimal design with time executing sequence is considered to reduce the energy consumption. The experimental results showed that the sensor is a promising tool for monitoring moisture in large-scale farmland using solar power and wireless communication.
在诸如灌溉调度和养分管理等各种农业活动中，土壤含水量被视为一个关键参数。在田间尺度内，电力供应或长距离电缆都很难获取。出于在田间尺度监测土壤水分动态的必要性，本研究提出了一种基于频域阻抗变换的无线土壤湿度传感器。该传感器系统由太阳能供电，数据可通过无线通信即时传输。传感器电极嵌入到支撑杆底部，以便传感器能够测量不同深度的土壤含水量。考虑采用具有时间执行序列的优化设计来降低能耗。实验结果表明，该传感器是利用太阳能和无线通信监测大规模农田湿度的一种很有前景的工具。
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