用圆锥台形电容传感器测量物料含水量的研究

The Measurement of Water Contents in Materials by a Cone Terraced Capacitance Sensor

提出了一种新型实用的圆锥台形电容传感器，并推导出其电容以及待测物料含水量与谐振频率之间的关系式．

A new practical capacitance sensor of a circular cone terraced shape is presented. The capacitance of the sensor and the relationship between the resonant frequency and water contents in the measured material are also derived. The new sensor can be widely used in the automatic measurement and on line control of wetness.