标题：Research on Residue Water Content Detector Based on Capacitive Sensors
作者：Ma, Lixiu; Li, Chao; Li, Tianze; Zhang, Xia
作者机构：[Ma, Lixiu; Li, Chao; Li, Tianze; Zhang, Xia] Shandong Univ Technol, Sch Elect & Elect Engn, Zibo, Peoples R China.
会议名称：Asia-Pacific Youth Conference on Communication
会议日期：AUG 07-08, 2010
来源：PROCEEDINGS OF 2010 ASIA-PACIFIC YOUTH CONFERENCE ON COMMUNICATION, VOLS 1 AND 2
关键词：residue water content; a glass cylinder; capacitive sensors; mathematic; model
摘要：A capacitive device with variable dielectric constant which is used in the detetion of the water content of residual, the detection device is made of glass, and the shape is cylindrical, and the thin copper which is campylodromous inlaid in glass. According to the basic principle of capacitor, the mathematic model of capacitance sensor is established, and analysis the factors and mechanisms which influence the sensitivity the capacitance sensor. Using digital capacitance to measure the capacitance value of the device when there is different water content residual, and check the mathematical model. Designing the hardware circuit and software programming. Experiments show that the device can measure the water content of residual, and have the advantages of simple structure and low cost.