A signal processing framework for simultaneous detection of multiple environmental contaminants

Subhadeep Chakraborty, Michael P. Manahan, Jr., Matthew M. Mench

Research output: Contribution to journalArticle

Abstract

The possibility of large-scale attacks using chemical warfare agents (CWAs) has exposed the critical need for fundamental research enabling the reliable, unambiguous and early detection of trace CWAs and toxic industrial chemicals. This paper presents a unique approach for the identification and classification of simultaneously present multiple environmental contaminants by perturbing an electrochemical (EC) sensor with an oscillating potential for the extraction of statistically rich information from the current response. The dynamic response, being a function of the degree and mechanism of contamination, is then processed with a symbolic dynamic filter for the extraction of representative patterns, which are then classified using a trained neural network. The approach presented in this paper promises to extend the sensing power and sensitivity of these EC sensors by augmenting and complementing sensor technology with state-of-the-art embedded real-time signal processing capabilities.

Original languageEnglish (US)
Article number115102
JournalMeasurement Science and Technology
Volume24
Issue number11
DOIs
StatePublished - Jan 1 2013

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Chemical warfare
Electrochemical sensors
chemical warfare
contaminants
Signal Processing
signal processing
Signal processing
Impurities
Industrial chemicals
Sensor
sensors
Dynamic response
Contamination
time signals
Symbolic Dynamics
Neural networks
dynamic response
Dynamic Response
attack
Sensors

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Applied Mathematics

Cite this

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A signal processing framework for simultaneous detection of multiple environmental contaminants. / Chakraborty, Subhadeep; Manahan, Jr., Michael P.; Mench, Matthew M.

In: Measurement Science and Technology, Vol. 24, No. 11, 115102, 01.01.2013.

Research output: Contribution to journalArticle

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