基于TMS320F2812的高精度数据采集及FFT实现

为了实现高精度同步数据采集，设计了一种基于TMS320F2812 DSP芯片与AD转换芯片AD7656构成的数据采集系统来进行数据采集，并对采样结果进行了FFT变换。重点介绍了系统硬件电路设计及FFT的实现。实验结果表明，系统能够高精度、高速度地进行A／D数据采集且FFT算法具有较高的效率。

High-precision Data Acquisition and FFT Accomplish Based on TMS320F2812

In order to implement high-precision simultaneous data collection,a data acquisition system based on composed TMS320F2812 DSP chip of TI and AD converters AD7656 is designed to collect data,and processes the sampling results with FFT transformation.This paper focuses on the hardware circuit design and FFT accomplishment.The result indicates that the system is able to complete the ADC with high-precision,high speed and the FFT algorithm with high efficiency.