Análise e desenvolvimento do projeto de automação e supervisão de processos de uma planta didática industrial

Abstract

This paper proposes a study of the automation project of a Didatic Industrial Plant as well as the communication networks present on industries, in order to develop an alternative supervisory system compared to the one already existent in the equipment, making it more flexible to its users. There are two processes implemented in the Plant: a heating system and a fluid mixing one. These processes are controlled and instrumented by devices that communicate themselves via Profibus protocol. It has been developed two interfaces based on OPC protocol (OLE - Object Linking and Embedding for Process Control) through the GUIDE existent in Matlab Software. The connection between Matlab and the OPC server, available in the plant’s PLC (Programmable Logic Controller), allows the user to develop different control techniques for the both meshes present in the equipment. For the proposed study, the developed interfaces work as a tool, where the users are able to insert their own control technique based on a PID controller. To prove the usability of the screens, some tests have been performed, like controlling the entering flow water into a tank 1 by increasing or decreasing the opening of a proper valve.