Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10411139 | Sensors and Actuators B: Chemical | 2005 | 7 Pages |
Abstract
We describe the use of a photoacoustic aerosol sensor for fire detection applications. The sensor is based on a cylindrical resonant chamber which is completely open on both sides in order to allow the smoke to enter it by pure diffusion. The sensor is equipped with a resonance tracking system that continuously monitors the changes in the resonance frequency caused by environmental conditions or an actual fire situation. The results show that our sensor has a very good response to smoke originating in open flaming combustion processes, which are hard to detect with commercially available sensors, and a low cross-sensitivity to the usual false alarm sources making it an ideal candidate to fill in an existing gap in the fire detection devices.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
A. Keller, M. Rüegg, M. Forster, M. Loepfe, R. Pleisch, P. Nebiker, H. Burtscher,