This course will explain how the (sequential) process of a bioreactor can be automised via the PLC controlling system. Furthermore, it will be explained how the process measurements (oxygen, redoxpotential, pH etc.) are being included in this control via input signals in order to generate an automatic report (e.g. Excel). Specific attention will also be paid to imposing process parameters / settings and to the controlling of actuators. As a point of departure we will consider the set up in the lab BIT.
The course consists of two main parts:
1. The control / steering: the PLC control of the process and an overview of the necessary hardware components for the process measurements and the generation of actuators (pumps and valves etc.)
2. Process visualization, process setup and reporting of the measuring signals with LabVIEW. The theoretical considerations will be tested ‘practically’ during the lab set up in the lab BIT.
Part 1: The control (PLC) and Networks and communication architectures (Theory 16 hours). This part will be finished with Case 1: the student will receive a detailed description of a bioprocess and has to be able to give, according to this description, a list and the specifications of the necessary hardware, a functional analysis of the process’s steering problem, and summarize it in a coherent report (specifications) that describes the full automation.
Part 2: Process visualization, process setup and reporting of the measuring signals with the aid of LabVIEW (Theory 8 hours): fundamental construction of an HMI (Human Machine Interface) of the process, program’s structures and basic functions, Labview as OPC client for reporting the measuring signals in Excel. This part will be finished with Case 2: in this case, students will have to configure a process visualization and a report of a BIT process (Lab 4 hours). The student will have the opportunity to visualize the development of a pH, or oxygen, or another process signal, if necessary controlling a valve, and automatically reporting in an Excel-sheet. The student will receive a LabVIEW vi (program) as an example on which can be developed. The student describes in a short but coherent report the aim of his/her application and delivers the developed LabVIEW vi electronically (via e-mail).
Depending on the number of students, the lab installation can be used as a ‘data source’ for the case, always in consultation with the professors BIT. The student’s application will be connected to the current OPC servers; an advantage of this is that the process data comes from a real process. If necessary, a small process setup with a pH meter will be done. However, all hardware has to be available.