Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 4 of 4
Full-Text Articles in Physical Sciences and Mathematics
Automatic Reaction To A Chemical Event Detected By A Low-Cost Wireless Chemical Sensing Network, Stephen Beirne, King Tong Lau, Brian Corcoran, Dermot Diamond
Automatic Reaction To A Chemical Event Detected By A Low-Cost Wireless Chemical Sensing Network, Stephen Beirne, King Tong Lau, Brian Corcoran, Dermot Diamond
Faculty of Science - Papers (Archive)
A test-scale wireless chemical sensor network (WCSN) has been deployed within a controlled Environmental Chamber (EC). The combined signals from the WCSN were used to initiate a controllable response to the detected chemical event. When a particular sensor response pattern was obtained, a purging cycle was initiated. Sensor data were continuously checked against user-defined action limits, to determine if a chemical event had occurred. An acidic contaminant was used to demonstrate the response of the sensor network. Once the acid plume was simultaneously detected by a number of wireless chemical sensor nodes, an automatic response action, which was the purging …
Evaluation Of A Low Cost Wireless Chemical Sensor Network For Environmental Monitoring, Jer Hayes, Stephen Beirne, King-Tong Lau, Dermot Diamond
Evaluation Of A Low Cost Wireless Chemical Sensor Network For Environmental Monitoring, Jer Hayes, Stephen Beirne, King-Tong Lau, Dermot Diamond
Faculty of Science - Papers (Archive)
We present work on the development and testing of a low-cost wireless chemical sensor network (WCSN) for monitoring irritant/toxic gases in the environment. The WCSN used in this work takes advantage of recent advances in low power wireless communication platforms and uses colorimetric sensors to detect the presence of certain target gases. This sensor network adopts a star configuration and performs one way RF communications from individual sensor nodes to the base-station. Each node in the network is composed of a multiple sensor platform that measures light intensity, temperature and motion. The light sensor was used as the chemical sensing …
Chemical Event Tracking Using A Low-Cost Wireless Chemical Sensing Network, Stephen T. Beirne, B Corcoran, K T Lau, D Diamond
Chemical Event Tracking Using A Low-Cost Wireless Chemical Sensing Network, Stephen T. Beirne, B Corcoran, K T Lau, D Diamond
Faculty of Science - Papers (Archive)
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 …
Microcosm: A Lost Cost 3-D Wireless Sensor Test-Bed Within A Controllable Environment, David Marsh, Richard Tynan, Stephen T. Beirne, Roderick L. Shepherd, Gregory O'Hare, Dermot Diamond, Brian Corcoran
Microcosm: A Lost Cost 3-D Wireless Sensor Test-Bed Within A Controllable Environment, David Marsh, Richard Tynan, Stephen T. Beirne, Roderick L. Shepherd, Gregory O'Hare, Dermot Diamond, Brian Corcoran
Faculty of Science - Papers (Archive)
This paper describes the creation of Microcosm, a low cost wireless sensor network test-bed within a controlled environment to facilitate WSN experiments in three dimensions, with an emphasis on executing sensing-related experiments. The design of the sensing hardware, software, support tools and the experimental environment itself are given. Issues related to the design of this configuration are discussed, with the potential pitfalls and eventual solutions alike given. Finally, current and future uses for the test-bed are listed.