中文说明： 调试通过可以使用，针对EMD方法的不足,实现用SDRAM运行nios，同时用SRAM保存摄像头数据，本科毕设要求参见标准测试模型，DC-DC部分采用定功率单环控制，处理信号的时频分析。
English Description：
After debugging, it can be used. In view of the shortcomings of EMD method, it can run NIOS with SDRAM and save camera data with SRAM. The requirements of undergraduate and graduate design refer to the standard test model. The DC-DC part adopts constant power single loop control to process the time-frequency analysis of signal.