Abstract:
Distributed control systems (DCS) are employed in complex process control systems for
monitoring, supervision, setpoint control and direct equipment control. In this project we
concentrate on direct equipment control using a general purpose data acquisition module.
A software program with a graphical user interface (GUI) is designed using Visual Basic in
.Net environment that involve three processes. Monitoring textboxes, setpoint spin controls
and checkboxlbutton based direct equipment control is accomplished in the GUI design.
Control signals from the GUI program are sent to the process equipments using an Advantech
USB-4711A DAQ module. Signals from the DAQ module are optically isolated and ON/OFF
signals are passed to the process equipments through relay interface. The proposed technique
of using general purpose DAQ hardware as a control device is supposed to be new in the era
of DCS. The system is tested in the laboratory and is found to work satisfactorily.
Description:
This thesis submitted in partial fulfillment of the requirements for the degree of B.Sc in Electrical and Electronic Engineering of East West University, Dhaka, Bangladesh.
