Abstract:
An air quality monitoring system (AQMS) based on
IEEE/ISO/IEC 21451 standards is presented. In the
development of AQMS, we have used the GSM wireless
communication module. The developed system is capable of
real-time measurement of air polluted gases such as CO2, CO,
NO2, and SO2. The machine-to-machine communication of the
air quality monitoring station and PC with the sink node was
successfully implemented. Various gas sensor technologies
were evaluated for the system and ultimately electrochemical
and infrared sensors were used. Hardware and software for an
AQMS was designed and implemented. The AQMS uses an
array of sensors to take measurements of the ambient air
surrounding it and wirelessly transmits the data to the base
station. A graphical user interface (GUI), which makes it easy
for end user(s) to interact with the system, was developed. Gas
concentration values are plotted on the GUI. The defined
calibration of the instruments at time interims assures that the
desired accuracy is sustained. This paper offers further
elucidations to design disputes raised in earlier studies.
