Wearable autonomous microsystem with electrochemical gas sensor array for real-time health and safety monitoring.
Li-H; Mu-X; Wang-Z; Liu-X; Guo-M; Jin-R; Zeng-X; Mason-AJ
Conf Proc IEEE Eng Med Biol Soc, 2012 Nov; 2012:503-506
Airborne pollution and explosive gases threaten human health and occupational safety, therefore generating high demand for a wearable autonomous multi-analyte gas sensor system for real-time environmental monitoring. This paper presents a system level solution through synergistic integration of sensors, electronics, and data analysis algorithms. Electrochemical sensors featuring ionic liquids were chosen to provide low-power room-temperature operation, rapid response, high sensitivity, good selectivity, and a long operating life with low maintenance. The system utilizes a multi-mode electrochemical instrumentation circuit that combines all signal condition functions within a single microelectronics chip to minimize system cost, size and power consumption. Embedded sensor array signal processing algorithms enable gas classification and concentration estimation within a real-world mixture of analytes. System design and integration methodologies are described, and preliminary results are shown for a first generation SO2 sensor and a thumb-drive sized prototype system.
Pollution; Pollutants; Airborne-particles; Airborne-dusts; Gases; Explosive-gases; Explosions; Analytical-processes; Explosive-dusts; Explosive-hazards; Explosives; Statistical-analysis; Monitoring-systems; Monitors
Conference Proceedings of the IEEE Engineering in Medicine and Biology Society
Michigan State University