設(shè)計(jì)實(shí)現(xiàn)了開(kāi)路電壓和交流阻抗測(cè)量系統(tǒng)。利用數(shù)字合成方法產(chǎn)生測(cè)量交流阻抗的
1KHz 正弦激勵(lì)信號(hào)；調(diào)整正弦激勵(lì)信號(hào)產(chǎn)生的電流和開(kāi)路電壓測(cè)量模塊輸入阻抗，以適應(yīng)測(cè)量環(huán)境要求；利用ADC 獲得開(kāi)路電壓和正弦激勵(lì)峰值電壓參數(shù)；用數(shù)字鑒相方法獲取正弦信號(hào)的相位差；應(yīng)用PIC 單片機(jī)控制定時(shí)測(cè)量、參數(shù)換算、顯示輸出等。
關(guān)鍵字：?jiǎn)纹瑱C(jī)；電壓測(cè)量；阻抗測(cè)量；數(shù)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