说明：   本系统是一个以c5051f020单片机为控制核心的简易电能质量监测装置。它能准确的完成同时对一路工频交流电的频率、电压有效值、电流有效值、有功功率、无功功率、功率因数和谐波等进行测量的数字式电能质量监测装置。
(The system is a c5051f020 simple microcontroller to control the core power quality monitoring devices. It can accurately complete all the way while the frequency of alternating current frequency, voltage rms, current rms, active power, reactive power, power factor and harmonic measurements of digital and other power quality monitoring devices.)