中文摘要：

为了实现热力站数据的采集和供热自动控制,设计出热力站监控系统。采用Rockwell可编程控制器及外围扩展模块进行组态,并设计出硬件连接电路,包括PLC模块电路、供电电路、模拟量处理电路、数字量处理电路、传感器和变频器连接电路。设计出PLC控制程序,实现了热交换站模拟和数字信号采集,并对变频器和电动阀门实施控制。采用昆仑通态MCGS触摸屏与PLC进行数据通讯,实时显示热力站温度、压力、流量、变频器频率等热力参数。

英文摘要：

Monitor and control system of heat exchange station is designed to realize data obtaining and auto-control of the station.Rockwell Programmable Logic Controller and extended modules are used to assemble, and the relevant circuits are designed, including PLC modules circuit, power circuit, analogue signals processing circuit, digital signals processing circuit, sensors circuit and frequency converter circuit. PLC program is designed to realize the obtaining of digital and analogue signals. Frequency converter and electric valve are also controlled by the program. The communication between MCGS screen and PLC is implemented to achieve the display of the station parameters, such as temperature, pressure, liquid flow, converter frequency,etc.