This paper is on the basis of the computer measurement and control system on heating net in shenyang huanggu heating - power plant < > the sub - station " s hardware and software of dcsch is studied and designed by writer , , and the hardware is composed with power , a / d , d / a , di , do and display circuit which used by single - chip computer of 89c52 while the software includes four parts : communication , data collect , display of lcd and control < , using the serial port of single - chip computer to communicate with upper - computer while communicate with lcm by adopting the bus to simulate serial port , some measurers of resisting interfere are adopted in hardware and software in order to composed a effective spot monitor computer system 本文以沈阳皇姑热电厂热网微机测控系统为基础，研究和设计了分布式集中供热控制系统中各热力子站现场监控部分的硬件和软件。硬件上采用89c52单片机组成监控系统，主要包括电源、 a d 、 d a 、 di 、 do及显示电路；软件实现分为四部分：通讯部分、数据采集、 lcd显示和控制部分。其中与上位机通讯采用单片机的串行口而与lcm通讯采用单片机口线模拟串行口的方法实现。
