The On-line Monitoring And Analysis System Based On Fieldbus For Blast-furnace Trough

With the industrial development toward automation and modernization, in industrial production process, solid or liquid level should often be measured accurately to implement the automatic monitoring and unwatched management of enterprise production. This text aimed at the blast-furnace trough of certain steel company, the fieldbus technique, level measurement, Object Oriented technique, database technique and software engineering have been researched, developed a distributed monitor system based fieldbus.The system includes three main functions:â‘ Monitoring the running status of the eight blast-furnace trough. At the same time realizes data collection, data display, series of parameters setting, warning management.â‘¡System has data administration and data analysis functions, which includes original data administration and its reviewing analysis in time field, alarming data administration and its reviewing analysis, historical data administration and its reviewing analysis, and trend analysis in a day. Historical data reviewing analysis can review data which stored in other place of the system or other exterior facility.â‘¢The system also has report forms engendering and report forms accessing through network functions.This text introduces the provenance and the development status of fieldbus. And the popular fieldbus at present and its development trend are analyzed. It discusses the principle of RS-485 fieldbus communication and its network structure. studied how to improve the measure which monitors precision and anti-interference under complicated environment, abominable condition , guaranteed detection precision of material information.Since the testing running of the system, every function has been verified. It satisfies the desire of users so gets some praise.