Publication Date


Date of Final Oral Examination (Defense)


Type of Culminating Activity


Degree Title

Master of Science in Computer Engineering


Electrical and Computer Engineering

Major Advisor

Sin Ming Loo, Ph.D.


Jim Browning, Ph.D.


Hao Chen, Ph.D.


The quality of indoor air depends on different types of pollutant sources existing in a semi-enclosed environment. The sources can be biological, chemical, or toxic pollutants. These sources can cause health issues and discomfort for occupants. One of the indicators of poor indoor air quality is Carbon Dioxide (CO2). CO2 can be used to indicate the indoor air exchange rate. The lack of air exchange means higher levels of CO2. High levels of indoor particulates can also be an indication of poor air quality. Due to the lack of fresh air, air circulation, and air filtration, the level of contaminants can be higher in some parts of a semi-enclosed space. In pursuit of higher energy efficiency, mechanical ventilation and circulation are necessary to manage the indoor air quality. This thesis describes a system to monitor and manage indoor air quality with the use of ventilation and circulation. The system will introduce fresh air and circulate existing air as needed to keep the indoor air quality within acceptable levels. This keeps the occupants healthy and comfortable. The end result of this research was a sensing system and a control system that communicate wirelessly. The sensing system was able to monitor the environmental changes and the control system was able to show the ability to manage the indoor air quality and the environmental conditions.