摘要
文中提出了一种新型介电频差式土壤水分传感器,研究了其量测特性。研究表明:在测量频率段内非盐碱性土壤的电导损耗角正切值大,土壤为高变损耗材料,利用频差式LC谐振电路,大幅度提高测量回路的品质因数,可以有效消除土壤电导变化对介电常数测量的干扰,以此为基础研制的土壤水分传感器可以基本上满足非盐碱性土壤定点水分测量的要求。
In this paper, a new inexpensive soil moisture sensor is developed, its basic principle , work characteristics, and application is introduced, the experiment show it have advantage of high precise, and the errors of soil kinds, bulk unit weight and salt constant are small.
出处
《电子测量技术》
2002年第4期36-39,共4页
Electronic Measurement Technology
