Reliable recognition of low level simulated chemical weapons

Author

Evju, Jon K. ; Meier, Douglas C. ; Montgomery, Christopher B. ; Semancik, Steve ; Boger, Zvi

Author_Institution

Div. of Process Meas., Nat. Inst. of Stand. & Technol., Gaithersburg, MD

fYear

2005

fDate

Oct. 30 2005-Nov. 3 2005

Abstract

The detection of chemical warfare simulants (CWSs) in the presence of high concentrations of common interferences was demonstrated with solid-state chemical microsensor arrays. Conductometric SnO₂ and TiO₂ sensing films deposited on microhotplates were utilized as transducers. The embedded microheaters were used to modulate the temperature of the sensor-array elements, while measuring conductance at each temperature. The resulting temperature-modulated sensing data was normalized to the high-temperature conductance and an artificial neural network was used to perform pattern-recognition on the resultant conductivity data vectors

Keywords

array signal processing; chemical sensors; microsensors; neural nets; pattern recognition; tin compounds; titanium compounds; SnO₂; TiO₂; artificial neural network; chemical warfare simulant detection; embedded microheater; high-temperature conductance; low level simulated chemical weapon; microhotplates; pattern-recognition; solid-state chemical microsensor array; Artificial neural networks; Chemical elements; Conductive films; Conductivity; Interference; Microsensors; Solid state circuits; Temperature sensors; Transducers; Weapons;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors, 2005 IEEE

Conference_Location

Irvine, CA

Print_ISBN

0-7803-9056-3

Type

conf

DOI

10.1109/ICSENS.2005.1597936

Filename

1597936