基于DSP与FPGA的实时功率谱分析仪

DSP and FPGA-based Real-time Power Spectrum Analyzer

设计了一套实时功率谱分析系统,主要用于信号的实时功率谱分析。采用DSP浮点芯片TMS32C6713作为系统的主处理单元,负责进行功率谱分析;FPGA芯片Spartan xc2s200为主控制单元,并通过CY7C68013 USB芯片与基于LabVIEW的上位机进行通信。为了保证系统的实时性,在DSP中使用了实时操作系统内核DSP/BIOS.它提供了抢占式多线程、硬件抽象、与寄存器配置等功能。分别采用频率为25 Hz、100 Hz的正弦信号对该系统进行标定。

Power spectrum analysis in the modern industry has very important significance and practical application value. A real time power spectrum analysis system was designed, mainly used for real-time signal power spectrum analysis. In this paper, a TI＇s floating-point DSP chip TMS32C6713 was used as main processing unit, responsible for the power spectrum analysis. A Xil- inx＇ s FPGA chip Spartan xc2s200 was used as main control unit, and communicated with the LabVIEW-based PC through Cy- press＇ s USB chip CY7C68013. In order to ensure the real-time of the system, a real-time operating system kernel DSP / BIOS was used. It provides the functions of preemptive multithreading, hardware abstraction, register configuration, and so on. The sinusoid- al signals with the frequency of 25 Hz and 100 Hz were adopted to calibrate the system.