摘要
提出了一种适用于分布式数据采集和监控系统（ＳＣＡＤＡ）远程智能终端（ＲＴＵ）中的直流在线式ＵＰＳ电源的设计方案，它具有交／直流掉电预警和过、欠压保护功能．论述了其工作原理，对预警电路输入端进行了改进，给出了改进后预警信号产生的原理图．设计电路已应用于水源井微机无线ＳＣＡＤＡ系统中，也适用于其它需要实时数据采集和监控的情况．
An on line DC uninterruptable power supply (UPS) scheme is presented. This scheme has AC/DC power fail warning and AC power overvoltage/undervoltage protection units . It is suitable for the remote terminal unit (RTU) of the control system and acquisition systems on distributed area (SCADA). The principles are described. The input circuit of preventer was proved. The improved circuit is proposed.
出处
《石油大学学报（自然科学版）》
CSCD
1997年第2期79-81,共3页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
电源
数据采集
监测系统
油气加工厂
电力系统
Direct
Electric power source
Data acquisition
Minitoring system
Pilot signal
Voltage regulator
Protection
