Document Type


Date of Award

Spring 5-31-1989

Degree Name

Master of Science in Electrical Engineering - (M.S.)


Electrical Engineering

First Advisor

Samir S. Sofer

Second Advisor

Stanley S. Reisman

Third Advisor

William N. Carr


A computer controlled oxygen bioreactor has been designed to obtain more accurate values for oxygen bioreactor requirements and to optimize oxygen productivity with respect to oxygen concentration. This study solves a specific problem relating to oxygen concentration measurement and bioreactor control. The proposed reactor system is computer controlled to insure a desired oxygen concentration supply to an oxygen consuming reaction or organism. This thesis also explains and illustrates the bioreactor and its computer control system.

The computer controller incorporates oxygen sensing, oxygen measurement and temperature measurement, Electrical circuits have been designed and built for proper signal conditioning, data acquisition, data storage, real time recording and data printout. All processes, oxygen ,sensing, temperature control, data acquisition, and signal conditioning are integrated by a microcomputer system which supervises the process control. The computer controlled oxygen bioreactor shows that a computer control system is feasible and is recommended for application in biological processes.