The variation of capacitance can calculate dielectric constant, area and range accurately, consequently, which is capable of measuring the relevant physical quantities indirectly. This paper design an automatic capacitance ranging system based on DDS and SCM. 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.
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张少谦,马辰,李恩全,等. 一种基于DDS与单片机的自动电容测量系统设计[J]. 科学技术与工程, 2010, (25): . Zhang Shao-qian, Ma Chen, Li En-quan, et al. Design of Automatic Capacitance Ranging System[J]. Science Technology and Engineering,2010,(25).