Abstract
A power quality on-line monitoring device based on two CPUS is designed and implemented in this paper, which separated the data analysis from the peripheral control completely, used CPLD (Complex Programmable Logic Device) to generate control timing of peripheral devices, made full use of the DSP, so as to meet the requirements of power quality: monitoring precision and real time. The paper firstly introduces the monitor's sampling circuit, communication module circuit, storage module circuit and the flow chart of software. Then, the functions, features and designations of each module are described in detail.
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