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介绍了ＵＰＳ电源系统监控仪的应用前景、功能及技术特性；阐述了监控仪的设计原理，供电时间计算方法以及开关模块、监控模块、键盘显示器模块和市电监测模块的设计经验，给出了详细的系统设计原理图。
The application prospect, the function and the technical characteristic of the monitor system of the UPS power supply system are introduced. The designing principle of the monitor, the calculation method of the power supply time and the design experience of the switch module, the monitoring module, the keyboard display module and the electricity monitoring module are described. Detailed system design schematic.