Design of electrotherapeutical signal generator based on DSP Builder

The details and principle that DSP builder and NCO IP core are used to generate electrotherapeutical signal are introduced in this paper. The pseudo-random sequence module and the sine signal generator module were achieved by DSP builder, and simulated in MATLAB Simulink. The whole system's analysis, synthesis, simulation and configuration were completed by Quartus II. And then user code is downloaded and tested on FPGA. Finally, observing frequency electrotherapy signal by oscillograph indicates that output waveform has nice smoothing and good randomness characteristics.