单一平面电容传感器原理与应用  

The principle and application of a single planar capacitance sensor

作　　者：贺庆之[1] 贺静 

机构地区：[1]西北轻工业学院自控系,咸阳712081 [2]飞利浦电子元件(上海)有限公司工程部,上海200131

出　　处：《工业仪表与自动化装置》2001年第5期62-63,58,共3页Industrial Instrumentation & Automation

摘　　要：本文阐述了电容极板放置在单一平面内的特殊电容传感器工作原理与敏感部分的3种等效电路 ,及这种电路引入拉氏运算子阻抗Zx(s)后的分析方法 ,容抗频率 (Cx/fx)变换电路 ;This paper presents the working principle and the three types of equivalent circuit of a special variable capacitance transducer, which consists of serial capacitive plates to be put on a sigle plane including the method of analysing the circuit by using Laplacian impedance. The paper also describes the circuits of capacitive reactance and frequency(Cx/Fx) conversion, the techniques of the fx/d conversion, data processing and the digital displaying circuit of a high performance monocomputer.

关 键 词：单一平面电容传感器 运算子阻抗 运算子电压 频数转换 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]