Implementation of AC signal acquisition and process system with FPGA

According to the requirements of power monitoring ,an implementary method of collecting and processing AC signal with FPGA is presented. Also the whole structure and each function module in FPGA are introduced. This system samples three-phase current and three-phase voltage synchronously,processes harmonic analysis, as well as measures power parameters for testing electric energy quality.With parallel and universal asynchronous serial communication interface, the universality of the system is greatly improved.