A multi-layer multi-sensor wearable device for physical and chemical environmental parameters monitoring (CO & NO2)

The monitoring of the ambient working conditions is a crucial part in occupational medicine. A wearable system for monitoring environmental conditions including physical and chemical parameters is introduced. The system operates based on an integrated and add on-board multi-layer sensors and fusion approach. It uniquely consists of only a small and light wrist-worn device which embeds a microcontroller board with integrated temperature, humidity and barometer sensors (Physical parameters), add on-board gas sensors (Chemical parameters) in second top layer for monitoring hazardous gases in air and a vibration motor placed under of the board. For an early notification of the user about ambient parameters a haptic feedback pattern is actuated using a micro embedded vibration motor. Data are also sent to a smart phone simultaneously. The collected data are used to monitor the ambient environment and establish a long-term individual profile for employees in real-time. With this paper we introduce the system architecture. Efficiency, performance and power consumption of such unique multi-layer multi-parameter monitoring device in size and weight are evaluated.