The design of three phase power network signal monitoring circuit based on synchronous sample

When monitoring the power network, it needs multiple channels to collect data synchronously, the common method requires to solve the synchronous sample problem, and the analog circuit and data transmission circuit are complex. So the paper designs the three phase power network signal monitoring circuit by the new A/D conversion chip with synchronous sample character, it can ensure the synchronism of data collection, and decrease the hardware cost. It also designs the data system by the logic resources in FPGA. For the collected data, FFT(Fast Fourier Transform) IP core is used to process it, and the result of FFT IP core module is compared with that of FFT by MATLAB simulation to verify FFT IP core module with good data process ability and high accuracy.