The Design And Implementation Of Monitored Control System For Laboratory Heating Network System Based On SQL Server Software

The computer monitoring is a synthetic technology including Computer Autocontrol, Sensing and Transducing, and widely apply in the Industry, agriculture, Environmental Protection, and so on. To simulate the the Centralized Heat-supply System and accomplish multiple experiments for thermal source, Heating network, consumers and heating exchange station, I apply this computer monitoring technology in the development of the system of laboratory Heating network, so this paper mainly discuss how to design the monitoring system of laboratory Heating network with large sampling and monitoring position.According to the demand analysis and integrated design concept of the system, I apply the principle of Modular programming and divide the system into three corresponding Subsystem: Data Acquisition Subsystem, Control Subsystem, and Communication Subsystem, and implement it through hardware designing and software designing. The designing of data acquisition part based on PC-LabCard and intelligence heat meters improve the picking efficiency. To solve the problem which foreign meters does not open the communication protocol, we develop the communication interface module to solve the problem of distributed control system serial communication between computer and multiple heat meters. The monitoring program based on software engineering has distinct logic, good hierarchical division, and easy maintenance. When I design the database of the monitoring system, I use the SQL SERVER database with powerful function of accessing network to join the monitoring software by OLE DB interface.Based on the computer monitoring system , we can do large research work, such as the simulation of the Heat-supply System, the heating network research of parameter and optimization management, instruction of students and so on. Otherwise, the monitoring program I compile has practically valuable for the development of other similar monitored control system in HVAC engineering.