Banca de DEFESA: HELTON PIERRE LUCENA DE MEDEIROS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : HELTON PIERRE LUCENA DE MEDEIROS
DATE: 26/09/2025
TIME: 15:00
LOCAL: Remoto
TITLE:

An IoT-based Air Quality Monitoring Platform

KEY WORDS:

Monitoring; Air Quality; IoT; Zabbix; Grafana; Node-RED; Testbed.

PAGES: 109
BIG AREA: Ciências Exatas e da Terra
AREA: Ciência da Computação
SUBÁREA: Sistemas de Computação
SPECIALTY: Hardware
SUMMARY:

This dissertation investigates the limited coverage of air-quality monitoring in Brazil and
proposes an alternative solution: an IoT-based platform capable of expanding environmen-
tal observability and operational automation. The object of study is a layered, software-
and hardware-agnostic architecture designed to integrate acquisition (IoT devices), trans-
mission, processing and assessment (calculation of the IQAr), time-series persistence, and
interactive visualization, with real-time notifications. The overall objective was to design
and validate, in a reproducible testbed, such an architecture; the specific objectives compri-
sed: (i) modeling and specifying a layered architecture for IoT-based air-quality monitoring;
(ii) implementing the experimental environment (testbed) with devices and sensors simula-
ted in Node-RED; (iii) demonstrating Zabbix’s potential as a monitoring platform applied
both to air quality and to IoT devices; and (iv) analyzing, from a technical-operational
standpoint, the results produced by the testbed and the feasibility of the proposed solution.
All objectives were achieved. The results show automated configuration of monitoring
via Zabbix templates, dashboards that display a map and per-station time series (with
pollutant-level detail and meteorological correlation), device and sensor supervision, and
real-time alerts delivered via instant messenger. The architecture proved applicable to
the technological arrangement used. Zabbix exhibited very efficient performance and full
compatibility with the application context, standing out as a tool with high potential for
monitoring IoT devices and air-quality systems; furthermore, the scarcity of academic
studies analyzing its use in this domain underscores this research’s contribution. As an
overall contribution, the work delivers a vendor-agnostic architectural guide, a replicable
testbed, and a robust proof of concept of the Node-RED–MQTT–Zabbix–Grafana inte-
gration for environmental monitoring, pointing to a concrete, scalable, and economically
viable path to expand air-quality monitoring coverage in the country.

 

COMMITTEE MEMBERS:
Presidente - 2140727 - GUSTAVO GIRAO BARRETO DA SILVA
Interno - 2180207 - ITAMIR DE MORAIS BARROCA FILHO
Interno - 3139050 - ROGER KREUTZ IMMICH
Externo à Instituição - IVAN SARAIVA SILVA - UFPI