Make full use of the DSP powerful signal processing ability and the modern numerical analysis method. Design the Watt-hour meter front sampling and measuring module of hardware, as well as a set of accord with national standard GB/T 17883-17883 of 0.2 S Accuracy of algorithm, at the same time extend the function of harmonic analysis. System overview: three-phase voltage and current The AD sampling, sampling data via a serial port sent to the processor (DSP), electric parameter meter by DSP of the sampling data Quantity and harmonic analysis, process the results with a custom LCD display, and through pulse mouth making active and reactive power Table pulse. DSP adopts BLACKFIN531 of ADI company- a 16-bit fixed-point chip, the highest processing capacity Up to 800 MIPS, sampling chip AD73360 for 16 bit, supports six channels synchronous conversion, no synchronization error. Digital, high precision, innovative and extensibility ?

三相智能电表设计.pdf

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