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Chemical event tracking using a low-cost wireless chemical sensing network

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4 Author(s)
Stephen Beirne ; School of Mechanical and Manufacturing Engineering, Dublin City University, Ireland ; Brian Corcoran ; King Tong Lau ; Dermot Diamond

A recently developed low-cost light emitting diode (LED) chemical sensing technique is integrated with a Mica2Dot wireless communications platform to form a deployable wireless chemical event indicator network. The operation of the colorimetric sensing node has been evaluated to determine its reproducibility and limit of detection for an acidic airborne contaminant. A test-scale network of five similar chemical sensing nodes is deployed in a star communication topology at fixed points within a custom built environmental sensing chamber (ESC). Presented data sets collected from the deployed wireless chemical sensor network (WCSN) show that during an acidic event scenario it is possible to track the plume speed and direction, and estimate the concentration of chemical plume by examining the collective sensor data relative to individual sensor node location within the monitored environment.

Published in:

Sensors, 2008 IEEE

Date of Conference:

26-29 Oct. 2008