一种基于DDS与单片机的自动电容测量系统设计  

Design of Automatic Capacitance Ranging System Based on DDS and SCM

作　　者：张少谦[1] 马辰[1] 李恩全[1] 赵睿[1] 

机构地区：[1]北京林业大学理学院,北京100083

出　　处：《科学技术与工程》2010年第25期6283-6286,共4页Science Technology and Engineering

基　　金：大学生创新项目(91103)资助

摘　　要：电容值的变化可以精确地反演介电常数、面积和距离,从而实现物理量的间接测量。利用DDS器件和单片机设计了一种电容测量系统。仿真和实验证明了系统可以有效的进行电容测量,具有参数设置灵活,自动化程度高的优点,适用于作为便携式测量仪器。The variation of capacitance can calculate dielectric constant,area and range accurately,consequently,which is capable of measuring the relevant physical quantities indirectly. An automatic capacitance ranging system based on DDS and SCM is designed.The experiment and simulation prove that the system can rang the capacitance value validly.The ranging system has the advantages of flexible parameter setting and highly automatization,therefore,is suitable for the portable equipment.

关 键 词：电容测量 DDS 电容电压转换 单片机系统 MULTISIM仿真 

分 类 号：TM934.2[电气工程—电力电子与电力传动]