Development and evaluation of an IoT-based indoor air quality system

Date of Publication

7-2023

Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Physics with Specialization in Materials Science

Subject Categories

Physics

College

College of Science

Department/Unit

Physics

Thesis Advisor

Edgar A. Vallar

Defense Panel Chair

Maria Cecilia D. Galvez

Defense Panel Member

Ofelia T. Rempillo
Prane Mariel B. Ong

Abstract (English)

Indoor air quality (IAQ) affects the health, productivity, and quality of life of occupants in a given space. As people spend a significant amount of time indoors, avoiding poor IAQ and preventing the unhealthy buildup of pollutants is necessary. One way to combat poor IAQ is through air quality monitoring. While there are a number of commercially available air quality monitors, these are still relatively expensive. Thus, the study aims to develop a relatively more affordable air quality monitoring system. This was done using an Arduino Uno development board and low-cost sensors to measure temperature, humidity, PM10, PM2.5, PM1, CO2, and TVOCs. The system was then used to monitor pollutant concentrations in four areas of a home and to determine the correlation between pollutant concentrations and occupant activities. The study was able to develop an IoT-based AQMS prototype costing less than 100.00 USD and was able to measure pollutant concentrations in four areas of a home, namely, the kitchen, bedroom, porch, and garage. Based on the study, mean PM concentrations were highest in the bedroom, while mean CO2 and TVOC concentrations were highest in the kitchen. Correlations between pollutant concentrations and occupant activities were found to be weak or very weak.

Abstract Format

html

Abstract (Filipino)

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Abstract Format

html

Language

English

Format

Electronic

Keywords

Indoor air quality

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Embargo Period

7-20-2023

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