This paper presents a new type of remote data terminal. This system makes use of the flat roof of ARM being inserted with the real-time operation μ C / OS-II. It realizes the lucid transmission between the multi-functional ammeters and the home site by Ethernet. 介绍了面向变电站的新型远程数据采集系统,该系统采用了基于ARM硬件平台及嵌入式μC/OS-II操作系统的数据采集终端,通过以太网实现了电力系统多功能电表与远距离主站间数据的透明传输。