A low-cost power quality measurements system realized by virtual instruments with Arduino ADC

ASIAIR > College of Computer Science > Department of Computer Science and Information Engineering > Theses & dissertations > Item 310904400/95813

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Title:	A low-cost power quality measurements system realized by virtual instruments with Arduino ADC
Authors:	Hung, Kun-Hong
Contributors:	資訊工程學系
Keywords:	frequency estimation;Arduino DAQ;Power signal;Fourier algorithm;Zero-crossing
Date:	2015
Issue Date:	2015-11-20
Publisher:	亞洲大學
Abstract:	This thesis aims to propose a simple way to develop a low-cost and high-efficiency frequency estimation system for power signal. Arduino DAQ is utilized to extract the power signal and then perform the analysis by using a virtual-instrument software, LabVIEW. First , the analysis is performed by using Fourier algorithm as a digital filter to fetch the fundamental signal of the acquired signals, and then a zero crossing algorithm technology is applied to sine or cosine signal of the fundamental signal to calculate the frequency of the fundamental signal. The RMS algorithm is also implemented to monitor the voltage variation of the power signal so as to monitor the power quality. LabVIEW is implemented to simulat a signal source with high-order harmonics and noise signal combined together, and the program can be used to estimate the frequency of fundamental sinusoidal signals with high accuracy. Experiments show Arduino can be utilized to complete the task of the data acquisition.
Appears in Collections:	[Department of Computer Science and Information Engineering] Theses & dissertations

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