基于FPGA的高阶FIR滤波器强抗干扰数据采集系统

摘要

This article introduced a data collection system especially suit for the conditions of high anti-interference and usable signal was submerged environment. The hardware of the system was designed with a 24 bits high accuracy A/D to collect analog signals, and we choose the FPGA of XILINX company as a controller. The software of the system, we use FIR filter to deprive the useless signals. With the use of FIR filter, this system has a higher accuracy and anti—interference ability compare to the traditional data collection systems.%介绍了一种适用于在强干扰、关键信号被无用信号淹没的情况下,实现高精度数据采集的系统.系统硬件上采用24位高精度A/D采集模拟信号,采用XILINX公司的FPGA作为主控制器;软件上通过从A/D读取数字化后的信号,再进行高阶FIR滤波,剔除了干扰信号.通过FIR滤波在数据采集系统中的运用,采集系统可以较传统数据系统有更高的采集精度和更强的抗干扰能力.