高冲击信号采集系统中数字滤波器的软件实现  

Digital Filter Actualized with Software in High Impact Signal Acquisition System

作　　者：张杨[1] 石川[1] 闫京海[1] 

机构地区：[1]中国人民解放军63880部队

出　　处：《现代电子技术》2011年第4期101-103,106,共4页Modern Electronics Technique

摘　　要：简单整系数滤波器的设计简单,运算速度快,可提高数据采集的实时性。为了对采集的高冲击信号进行有效识别和分析,利用极零点抵消的方法,构造具有低通特性的简单整系数滤波器。并将其应用在基于MSP430F449单片机的信号采集系统中进行测试试验,其结果理想,输出数据稳定,能够满足采集系统的滤波要求。Simple integral coefficient digital filter has the advantages of easy design and high operation speed, which can improve the real-time characteristic of date acquisition. In order to identify and analyze high impact signal effectively, the integral coefficient digital filter with low pass characteristic is constructed using the pole and zero cancellation method. Mean while, performance test of the designed digital filter is carried out in signal acquirement system based on MSP430F449. The result is ideal and steady, which proves that the digital filter satisfies requirements of the system.

关 键 词：整系数数字滤波器 信号采集 软件滤波 MSP430F449 

分 类 号：TN911-34[电子电信—通信与信息系统]