Instrumentation & Measurement Magazine 25-9 - 58

Data Collection from Bashundhara:
Next, air quality
data were collected from
the Bashundhara area of
Dhaka. Here only outdoor
data were recorded for the
Bashundhara region as the
indoor data was almost
similar to the Uttara area.
According to Table 5, the
air pollution data seemed
to be better in the Bashundhara
area than in Uttara.
The average concentration
of CO, LPG, and NOx gases
were higher in the Uttara
locality than in the Bashundhara
by a factor of
1.29, 2.07, and 1.42, respectively.
As Bashundhara
is more residential than
Uttara, there were fewer
emissions from burning fuels
and construction sites.
Consequently, its air consisted
of significantly fewer
hazardous components.
Lastly, the amount of CO,
NOx, and dust at different
time instances for the
outdoor environment of
Bashundhara, Dhaka are
shown in Fig. 7.
Table 6 compares the
Fig. 4. Data collection site at Uttara, Dhaka. (a) Structural overhead view captured by the drone's camera; (b) Drone's
flight route on Google Maps.
proposed air quality monitoring
device with other
developed works considering
their main features,
employed primary microcontroller
and various
sensors, communication
technique, and approximate
cost. The nodeMCU
prototyping board was
used as the primary microcontroller in this work because of its
built-in Wi-Fi capability, small size and weight, and fast clock
speed. This work developed a more straightforward air particle
measurement device at a low cost of US $360.
Fig. 5. Histogram of outdoor air quality monitoring data at different time
instances at Uttara, Dhaka, Bangladesh.
58
Conclusions
Air pollution is increasing day by day because of the rapid
growth of civilization and industrialization. Hazardous and
unclean emissions from the burning of fossil fuels, automobiles,
and chemical industries are creating detrimental effects
on human health, biodiversity, and the earth's ecosystem. In
this study, we developed a multiple-phase low-cost air quality
IEEE Instrumentation & Measurement Magazine
December 2022

Instrumentation & Measurement Magazine 25-9

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