Firstly,the power quality detection device combining DSP and ARM is designed.After that,it mainly completes the design of signal acquisition,signal conditioning and other detection circuit functions;Then,the software design of the device is car-ried out,mainly completing the design of DSP and ARM main programs,using wavelet packet transform and fast Fourier transform to process the sampled data,then using LabVIEW software to make a simulation program,and finally completing the detection perform-ance test of the device on the built experimental platform.The experimental results show that the error of the device is about 1％,and the design has achieved the expected effect.
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