摘要: A principle of the impedance measurement based on DFT is proposed, and an implementation designed. The raises requirement a 2-channel simultaneous sampling. In order to satisfy with single A/D converter, both hardware solution software are latter, which in fact kind compensation, preferred. larger range requires dynamic data acquisition, thus floating-point converter designed substitute for monolithic fixed-point because FP-ADC much than that one. As digital technique, method takes full advantage powerful arithmetic processing ability signal processor. Simulation experiments two extreme cases studied verify performance system result curves plotted.
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