变电站数据在线监测系统的研究与设计

摘要

The online data monitoring system for substation designed consistes of data acquiring node, touch screen,GPRS module and industry computer,etc. . The hardware for data acquiring node uses ARM processor as its core,and the software is based on Linux operating system for function program designing like analog converting,digital input and output,and Modbus protocol,etc. . Monitoring programs for the industry computer and touch screen are designed by confiuration software to realize real-time data display,data stor-age and warning. Parts of the system such as industry computer,touch screen and data acquiring node are connected through Modbus and RS-485 interface. Data communication between data acquiring node and data center is realized by the GPRS module. The system has better expansibility and realibility and can satisfy the multi-channel,varied signal type and wide area data acquiring demands by substations.%设计变电站数据监测系统，由数据采集节点、触摸屏、GPRS通信模块和工控机等组成。数据采集节点以ARM处理器为硬件核心。基于Linux嵌入式操作系统设计模拟量和开关量的数据采集、MODBUS协议等功能程序。利用组态软件开发工控机和触摸屏上的监控软件，能实现数据的实时显示、存储和报警等。系统采用MODBUS通信协议的RS-485接口连接工控机、触摸屏和各个数据采集节点，通过GPRS通信模块实现与数据中心的数据传送。系统具有很好的扩展性和可靠性，满足了变电站数据采集的多通道、多信号形式和覆盖范围广等要求。