IEEE Sensors 2004 Conference
Abstract
This work describes the use of an array of SAWs (surface acoustic wave devices) to detect and identify chemical warfare agents (nerve and mustard simulants) in a background of interferents (methanol, diesel and hexane). Even in a varying concentration and realistic gas delivery profiles, an array of SAWs is able to identify and predict the concentrations of simulants in real-time. This application differs from standard electronic noses (e-noses) as it is analytic. Much of the previous work in the field of sensor arrays and mixtures (usually binary or tertiary) tries to learn the whole sample space, due to the use of non-selective sensors. The SAWs used in this array, although not completely selective have a very high sensitivity to only the simulants. Thus, using the appropriate classification algorithms a real-time chemical detector can be realized. The system was tested with a wide range of gas profiles and was able to identify and quantitate the simulants to a high degree of accuracy.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 27, 2004
- Accession Number
- ADA430135
Entities
People
- Greg Harmer