Study on Measuring Methods of Inductance and High-frequency Voltage
Shisheng Wang · Electrical Measurement & Instrumentation · 2012
The current measuring instrument for inductance and high frequency voltage involves complex structure,and is lack of accuracy.To solve this problem,this paper introduces a design solution with combination use of single chip microcomputer and conversion circuit.Firstly,the system uses conversion circuit to convert inductance and high-frequency voltage into frequency;then it uses an improved algorithm to measure the frequency;and finally,the values of inductance and high frequency voltage are solved by the basis of frequency and the transitive relations of the conversion circuit.Experiments showed that the solution is simple in circuit board design;it can reach high input impedance;and the measuring result is accurate.The method developed in this paper is valuable in reducing the complexity of the instrument's circuit,as well as the measurement error.