微弱信号高精度数据采集技术研究  

Technical research on high-accuracy data acquisition of weak signals

作　　者：杨宁[1] 惠晓强[1] 

机构地区：[1]西安航空计算技术研究所,陕西西安710119

出　　处：《现代电子技术》2013年第9期71-73,共3页Modern Electronics Technique

摘　　要：介绍了一般数据采集系统的拓扑结构,针对微弱信号的特点,从信号传输、滤波、放大调理和模/数转换等方面进行了全面分析,通过对数据采集系统的拓扑进行改进和优化设计,分析计算相关的误差,提供了解决微弱信号采集的完整方案,试验验证该方案可以获得高精度的数据采集结果。The typical topological structures of common data acquisition systems are introduced. Transmission, filtering, amplification and A/D conversion of the weak signals are analyzed according to the characteristics of weak signals. By improving topological structure, optimizing design and analysing the error of data acquisition system, a whole solution was provided for data acquisition of weak signals. The test result indicates the solution can achieve the high-accuracy data acquisition.

关 键 词：微弱信号采集 热电偶 数据采集 仪表放大器 

分 类 号：TN911.7[电子电信—通信与信息系统]