高精度多路模拟量采集电路设计与实现  

Design and Application of Multi-channel High Precision Analog-data-acquisition Circuit

作　　者：裴静静[1] 李孟华[1] PEI Jingjing;LI Menghua(Xi'an Aeronautics Computing Technique Research Institute,AVIC,Xi'an 710065)

机构地区：[1]中航工业西安航空计算技术研究所,西安710065

出　　处：《计算机与数字工程》2018年第3期606-608,619,共4页Computer & Digital Engineering

基　　金：航空科学基金(编号:2013ZD31007)资助

摘　　要：弹载计算机作为现代导弹制导与控制系统的核心部件,其功能日趋复杂,尤其是对模拟信号的采集、传输、储存和处理,其采集精度与处理速度变得尤为关键,直接影响到导弹制导的精度和杀伤目标的概率。论文提出一种多路模拟量采集处理电路,该电路可通过特定的算法计算出AD增益误差和偏移误差,对采集结果进行修正,从而提高了AD采集精度,通过FPGA控制多路模拟转换器及AD转换器进行多路模拟信号自动循环采集,最终实现了弹上多路信号的精确监测与控制。The missile-borne computer,as the key component of modern missile guidance and control system,its function has become increasingly complex,especially to the analog signal collection,transmission,storage and handling.The acquisition precision and processing speed is particularly critical,it directly affects the precision of the missile guidance and the probability of damage.This paper proposes a multi-channel analog fast acquisition circuit,the precision can be corrected by a specific algorithm with calculating AD gain and offset errors.Automatic sampling is realized by controlling the multi-channel analog converter and AD converter,finally the accurate detection and control of missile-borne multi-channel analog signals are achieved.

关 键 词：模拟量采集 多路选择 软件修正 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]