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Internet of Things-driven intelligent ventilation system for buildings in humanized designs

, , ,  and   
Mar 19, 2025

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Figure 1.

Conceptual model of iot
Conceptual model of iot

Figure 2.

Network structure diagram of air conditioning and ventilation system
Network structure diagram of air conditioning and ventilation system

Figure 3.

Variation curve of single-day CO2 concentration in bedroom
Variation curve of single-day CO2 concentration in bedroom

Figure 4.

Variation curve of single-day PM2.5 concentration in living room
Variation curve of single-day PM2.5 concentration in living room

Figure 5.

Variation curve of single-day pollutant concentration in kitchen
Variation curve of single-day pollutant concentration in kitchen

Figure 6.

Dangerous gas alarm threshold
Dangerous gas alarm threshold

Conventional control and fuzzy control comparison

Control method Hypermodulation (%) Rise time (s) Adjust time(s) Steady state error(%)
Conventional control 30 0.09 0.63 3
Fuzzy control 10 0.06 0.42 2

Part of the collection of sample Numbers

Group number Carbon monoxide (ppm) Oxygen (vol.) Temperature (°C)
1 60.5 21.97 25.2
2 47.2 21.74 26.1
3 41.1 21.55 26.6
4 36.9 20.96 27.5
5 33.7 20.37 27.4
6 30.8 20.02 28.2
7 28.6 20.19 29.6
8 22.2 19.46 30.8
9 16.7 19.37 31.2
10 58.3 18.22 31.5
11 69.7 19.32 30.6
12 79.2 20.03 29.2
13 81.1 20.27 28.6
14 83.3 20.68 27.9
15 84.7 21.14 27.4
…… …… …… ……

System test table

Name Content Test frequency Success number
PC client Power control 120 115
Fault alarm 120 115
Data display 120 120
Equipment control 120 115
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