A wireless-sensor for soil water content powered by solar energy
1.College of Information and Electrical Engineering, China Agricultural University,Beijing 100083,China; 2.School of Technology,Beijing Forestry University,Beijing 100083, China）
Abstract：Either power-supply or long-distance cable is hardly available within field-scale. Considering this,we present a new sensor of soil water content based on the impedance transform of frequency domain. The sensor is powered by solar-energy and the data can be instantly transmitted by wireless communication. The electrodes of the sensor are imbedded into the bottom of a supporting rod so that it can measure moisture contents at various depths of 5～500 mm. Moreover,to reduce entire energy consumption,the optimal design with time-sharing sequence is considered. The experiment results indicate that the sensor is a promising tool for monitoring water content in field-scale with solar power and wireless communication.
李连骏, 孙宇瑞, 林剑辉. 一种太阳能供电的土壤水分无线传感器[J]. 江苏大学学报（自然科学版）, 2009, 30(6): 541-544.
Li Lianjun, Sun Yurui, Lin Jianhui. A wireless-sensor for soil water content powered by solar energy[J]. Journal of Jiangsu University(Natural Science Eidtion)
, 2009, 30(6): 541-544.
2009, Vol. 30 
