基于FPGA多通道数据采集系统设计

Design of Data Acquisition System Based on FPGA

以EP1K100系列FPGA为核心控制模块结合CS5101A模数转换芯片,实现了高精度数据采集系统,该系统能够完成40路最大采样频率100KHz、精度为12位有效数位的差分模拟信号采集,具有采集通道输入路径的自标定功能。介绍了该控制FPGA由顶至下模块化设计的具体实现方案,并给出其核心模块的状态跃迁图及时序仿真波形。

This paper describes a multi-channel data acquisition system using EP1K100 serials FPGA and CS5101A A/D converter. The system achieves acquiring 40-route differential analog signals with the maximal frequency of 100KHz and the precision of 12 bits,and also provides self-calibration funclion.A top-down methodology is used in the design of FPGA. The state diagrams and simulation waveforms of main modules are presented.