PCM与网络数据采集系统技术分析

机PCM数据采集系统在飞行试验领域已经有几十年的应用历史.这种类型的数据采集系统是业界广为熟知的,相对来讲使用简单,软硬件配置较小,易于建立小型或大型分布式数据采集系统.随着计算机网络技术的迅猛发展,网络数据采集系统被逐渐应用,相对来讲其在飞行试验机载测试领域还是一种新的模式,因此建立网络数据采集系统的新方法和更好地应用这些方法是非常重要的.为此,探讨和比较了传统的PCM数据采集系统和网络数据采集系统的基本原理和特性,重点讨论了在网络数据采集系统中所引起的时间分配和同步问题.

Technical Review of Data Acquisition Systems Based on PCM and Network

Onboard PCM data acquisition systems have been applied for several decades.It is familiar,used easily,small configuration,facilely setting mini or distributed data acquisition systems in flight test area.Along with computer technique,data acquisition systems,a new manner based on network has being used gradually in flight test.It is important to build the new methodology and apply it in testing.The elements and characteristics of data acquisition systems based on PCM and network are discussed,focusing in ti...