Development of an Indoor Air Quality Monitoring System based on a Microcontroller
Witte, Torben Felix (2014)
Witte, Torben Felix
Metropolia Ammattikorkeakoulu
2014
All rights reserved
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2014061913170
https://urn.fi/URN:NBN:fi:amk-2014061913170
Tiivistelmä
With the increasing time people spend indoor, the importance of the Indoor Air Quality increases.Especially in learning facilities, a high Indoor Air Quality is required to provide a good learning situation to students and teachers. This project is targeted on improving the Indoor Air Quality in a learning environment by monitoring the Indoor Air Quality and to provide information and reasoned advice to the users.
The operation principles of gas sensors are explained. A special focus lies on NDIR sensors and resistive MOX sensors, which are used to measure characteristic factors of the indoor air. The data are used to evaluate the Indoor Air Quality. Additionally data logging functionality and a radio link are intended, as well as a user interface to communicate the gained information.
During the development, the data logging feature had to be temporarily excluded, due to interference with other parts of the system. Even though this problem is not solved yet, a functional prototype without data logging functionality has been developed. First tests demonstrated the functionality of the implemented features, but there are parts left to be implemented in future.
The operation principles of gas sensors are explained. A special focus lies on NDIR sensors and resistive MOX sensors, which are used to measure characteristic factors of the indoor air. The data are used to evaluate the Indoor Air Quality. Additionally data logging functionality and a radio link are intended, as well as a user interface to communicate the gained information.
During the development, the data logging feature had to be temporarily excluded, due to interference with other parts of the system. Even though this problem is not solved yet, a functional prototype without data logging functionality has been developed. First tests demonstrated the functionality of the implemented features, but there are parts left to be implemented in future.