Construction and Application of an Intelligent Air Quality Monitoring System for Healthcare Environment

Authors:
Chao-Tung Yang;Chi-Jui Liao;Jung-Chun Liu;Walter Den;Ying-Chyi Chou;Jaw-Ji Tsai
Affiliations:
Department of Computer Engineering, Tunghai University, Taichung City, Republic of China;Department of Computer Engineering, Tunghai University, Taichung City, Republic of China;Department of Computer Engineering, Tunghai University, Taichung City, Republic of China;Department of Environmental Science and Engineering, Tunghai University, Taichung City, Republic of China;Department of Business Administration, Tunghai University, Taichung City, Republic of China;Section of Allergy and Immunology, Taichung Veterans General Hospital, Taichung City, Republic of China
Venue:
Journal of Medical Systems
Year:
2014

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Abstract

Indoor air quality monitoring in healthcare environment has become a critical part of hospital management and policy. Manual air sampling and analysis are cost-inhibitive and do not provide real-time air quality data and response measures. In this month-long study over 14 sampling locations in a public hospital in Taiwan, we observed a positive correlation between CO2 concentration and population, total bacteria, and particulate matter concentrations, thus monitoring CO2 concentration as a general indicator for air quality could be a viable option. Consequently, an intelligent environmental monitoring system consisting of a CO2/temperature/humidity sensor, a digital plug, and a ZigBee Router and Coordinator was developed and tested. The system also included a backend server that received and analyzed data, as well as activating ventilation and air purifiers when CO2 concentration exceeded a pre-set value. Alert messages can also be delivered to offsite users through mobile devices.