Indoor Air Quality Monitor: Concept and Implementation

PublishTime：2021-10-27

Air pollution refers to a wide range of gases, liquids and solids suspended in the atmosphere, which have harmful effects on human health. Since most people spend a significant amount of their time indoors, the indoor air pollution and environment have a determining influence on human health. The indoor air pollution is one of the world’s largest environmental problems. Based on figures from the World Health Organization, 3.8 million people die prematurely each year from illness attributable to household air pollution. Hence, it is essential to have good air quality monitor systems at the office and at home for constant air quality monitoring.
The indoor air has major airborne contaminants, such as total volatile organic compounds (TVOC), Carbon dioxide (CO₂) and Particulate Matter with a dust particle diameter of up to 2.5 microns (PM-2.5). The indoor air has two other factors that affect its quality: The humidity and temperature levels of the indoor environment. The Indoor Air Quality Monitor (AQM) is a real-time monitoring system, which measures the values of these contaminants and factors. The smart and secure AQMs are capable of transmitting the monitored air quality parameters to a cloud server through the wireless communication medium for real-time data modeling, real-time pollution data mapping, smart notification, and to generate automated reports.
In this application demonstrator, the AQM system is designed and implemented using Core Independent Peripherals (CIPs) and intelligent analog peripherals of the ATmega4808 microcontroller
(AVR® MCU) featuring the 8-bit AVR processor. Microchip’s CryptoAuthentication™ secure element (ATECC608A) and a fully certified Wi-Fi® module (ATWINC1510) are used to securely connect the smart AQM to the Google Cloud™ IoT Core platform.
The application demo is realized using the AVR-IoT WG development board from Microchip, and sensors and several click boards from MikroElektronika. Refer to the AVR-IoT WG Development Board product page for AVR-IoT WG development board details.

Brand of Product：	Microchip
Part#：
Product Category：	Indoor Air Quality Monitor More
Application：	More
Data Type：	Application note & Design Guide More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	03/2020
Version Number：	Revision A
Data Encoding：	AN3403,DS00003403A
Data Size：	3.3 MB

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