摘要
设计了一种实时信号频谱分析系统,该系统以TMS320F2812 DSP作为系统数据处理核心,外扩14位高精度ADC,用FFT技术对信号频域进行分析。频谱分析的结果可实时显示并上传至上位机。通过对内部RAM的分块使用、在RAM中运行程序、利用中断实现任务调度等措施对软件进行优化设计,系统的实时性能良好。
In this paper a real-time spectrum analysis system is presented, in which TMS320F2812 DSP is used as the data processing core and the extended 14-bit high-precision ADC is used for signal acquisition and Fast Fourier Transform （FFT） for frequeneydomain data processing. The results of spectrum analysis can be displayed in LCD and upload to upper computer. And then FFT algorithm is optimized by taken software means such as the use of sub-block in the RAM and interruptions in PCs which achieves the task schedules. The system has good real-time performance.
出处
《山西电子技术》
2010年第1期3-4,30,共3页
Shanxi Electronic Technology
