AP3.2 - EMI-free Bidirectional Real-time Indoor Environment Monitoring System
- 17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
- Applications 3 - Indoor Gas Sensing
- W. Chung, N. Pham, V. Rachim, J. An - Pukyong National University, Busan, (South Korea)
- 382 - 383
Indoor air quality, temperature, and relative humidity are broadly referred to the environmental characteristics inside buildings that may affect a thermal comfort and healthy life of the personnel. Thus, monitoring continuously these parameters is essential in order to understand and prevent air pollution, preserve health and improve labor productivity. Therefore, we propose a unique indoor environmental monitoring system which implemented EMI-free visible light communication (VLC) technology. Our system included a base station integrated into the LED lamp, sensor modules placed in regular breathing zone at the 1.5m height of workplace. Five vital parameters of indoor environment in multi-location are being remotely monitoring in real-time. After collecting the sensing data from electrochemical sensors, we modulated these data into the light beam by LED and photodiode are employed as the VLC receiver with high data rate. Our average-voltage tracking algorithm is also adapted to allow the LED illumination to utilize feasibly for dual purposes as a lighting system and a bidirectional communication in long range. Finally, the measured data are displayed by using a user interface in real-time.