Internet of Things for Indoor Air Quality Measurements

Poor indoor air quality is common in many buildings, especially in schools. It causes significant health issues and expenses. Measurements of new indoor air variables are needed, because, in many cases, conventional measurements cannot explain why people are experiencing problems arising from indoor air. Internet of Things based new better measurements and measurement systems facilitate new ways of solving indoor air quality problems.New measurements of airborne sulphides and surface tension measurements of condensed indoor humidity are implemented with Bluetooth microcontrollers that send the measurement data to a cloud server using a Raspberry Pi based gateway.