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A Qualidade do Ar Interior (QAI) é uma temática cada vez mais relevante nos dias que
correm, dado o impacto que a poluição atmosférica é para a saúde, associada a infeções
respiratórias, doenças cardiovasculares e alterações no foro cognitivo. Têm-se observado
mudanças nos hábitos quotidianos derivados de estilos de vida mais modernos e seden-
tários resultando numa permanência cada vez maior em ambientes interiores. Torna-se,
portanto, essencial analisar e monitorizar a qualidade de ar destes ambientes fechados,
mais limitados a nível de renovação do ar e dependentes de sistemas de ventilação.
Considerando este objetivo, foi desenvolvido um sistema de monitorização de alguns
fatores ambientais impactantes na qualidade de ar, nomeadamente temperatura, humidade
relativa e material particulado, como PM1.0, PM2.5 e PM10. O sistema é composto por um
dispositivo de aquisição de dados sensoriais e uma aplicação desenvolvida na plataforma
low code Blynk. O dispositivo de aquisição de dados recorre a sensores de baixo custo
para efetuar medições em tempo-real ligados a um microcontrolador, que por sua vez,
as comunica com um servidor na cloud através da Internet, utilizando uma ligação Wi-Fi
ao router. Deste modo, o utilizador consegue visualizar a informação no momento e até
uma semana. A aplicação emite alertas ao utilizador quando os fatores ambientais se
encontram a níveis desaconselhados, via notificações de telemóvel.
Air quality is an increasingly relevant subject, given the prevalent impact that air pollution has on people’s health, associated with respiratory infections, cardiovascular diseases and cognitive changes. Changes have been observed in daily habits arising from more modern and sedentary lifestyles, leading to people spending more time indoors. It is therefore essential to analyze and monitor the air quality in these closed environments, characterized by limitations in terms of air renewal and dependent on ventilation systems. With this goal in mind, a system was developed to monitor certain environmental factors that impact air quality, namely temperature, relative humidity and particulate matter, such as PM1.0, PM2.5 and PM10. The system consists of a sensory data acquisition device and an application developed on the Blynk low code platform. The data acquisition device uses low-cost sensors to take real-time measurements connected to a microcontroller, which in turn communicates them to a cloud server via the Internet, using Wi-Fi to connect to the router. This allows the user to view the information in real time and up to a week back. The application alerts the user when environmental factors reach undesirable levels via mobile phone notifications.
Air quality is an increasingly relevant subject, given the prevalent impact that air pollution has on people’s health, associated with respiratory infections, cardiovascular diseases and cognitive changes. Changes have been observed in daily habits arising from more modern and sedentary lifestyles, leading to people spending more time indoors. It is therefore essential to analyze and monitor the air quality in these closed environments, characterized by limitations in terms of air renewal and dependent on ventilation systems. With this goal in mind, a system was developed to monitor certain environmental factors that impact air quality, namely temperature, relative humidity and particulate matter, such as PM1.0, PM2.5 and PM10. The system consists of a sensory data acquisition device and an application developed on the Blynk low code platform. The data acquisition device uses low-cost sensors to take real-time measurements connected to a microcontroller, which in turn communicates them to a cloud server via the Internet, using Wi-Fi to connect to the router. This allows the user to view the information in real time and up to a week back. The application alerts the user when environmental factors reach undesirable levels via mobile phone notifications.
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DHT22 ESP32 Internet of Things (IoT) Plataforma Blynk QAI SPS30
