开路电压及交流阻抗测量系统

设计实现了开路电压和交流阻抗测量系统。利用数字合成方法产生测量交流阻抗的
1KHz 正弦激励信号；调整正弦激励信号产生的电流和开路电压测量模块输入阻抗，以适应测量环境要求；利用ADC 获得开路电压和正弦激励峰值电压参数；用数字鉴相方法获取正弦信号的相位差；应用PIC 单片机控制定时测量、参数换算、显示输出等。
关键字：单片机；电压测量；阻抗测量；数字合成正弦波

Detecting System of Voltage and Reactance LI Ji-ming, ZHANG Yue (Graduate School of ShenZhen, Tsinghua University ShenZhen 518055) Abstract: The Detecting System of Voltage and Reactance of electrical gears is designed. The system generates 1KHz sine wave using DSS method; amplifies the peak voltage of the stimulating sine wave and enhances the input resistance of the open voltage detecting module for the special requirements in the concrete evaluation; retrieves the voltage values digitally using ADC; gets the phase difference parameter digitally; utilizes PIC microprocessor as the main controller to time the detections, do the mathematic operations and display the outputs.
Keywords: PIC Microprocessor; Voltage Detection; Reactance Detection; DSS