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Electronic-nose for detecting environmental pollutants: Signal processing and analog front-end design

Publication ,  Journal Article
Kim, H; Konnanath, B; Sattigeri, P; Wang, J; Mulchandani, A; Myung, N; Deshusses, MA; Spanias, A; Bakkaloglu, B
Published in: Analog Integrated Circuits and Signal Processing
January 1, 2012

Environmental monitoring relies on compact, portable sensor systems capable of detecting pollutants in real-time. An integrated chemical sensor array system is developed for detection and identification of environmental pollutants in diesel and gasoline exhaust fumes. The system consists of a low noise floor analog front-end (AFE. Followed by a signal processing stage. in this paper, we present techniques to detect, digitize, denoise and classify a certain set of analytes. The proposed AFE reads out the output of eight conductometric sensors and eight amperometric electrochemical sensors and achieves 91 dB SNR at 23.4 mW quiescent power consumption for all channels. We demonstrate signal denoising using a discrete wavelet transform based technique. Appropriate features are extracted from sensor data, and pattern classification methods are used to identify the analytes. Several existing pattern classification algorithms are used for analyte detection and the comparative results are presented. © 2011 Springer Science+Business Media, LLC.

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Published In

Analog Integrated Circuits and Signal Processing

DOI

EISSN

1573-1979

ISSN

0925-1030

Publication Date

January 1, 2012

Volume

70

Issue

1

Start / End Page

15 / 32

Related Subject Headings

  • Electrical & Electronic Engineering
  • 4009 Electronics, sensors and digital hardware
  • 4008 Electrical engineering
  • 1005 Communications Technologies
  • 0906 Electrical and Electronic Engineering
 

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Kim, H., Konnanath, B., Sattigeri, P., Wang, J., Mulchandani, A., Myung, N., … Bakkaloglu, B. (2012). Electronic-nose for detecting environmental pollutants: Signal processing and analog front-end design. Analog Integrated Circuits and Signal Processing, 70(1), 15–32. https://doi.org/10.1007/s10470-011-9638-1
Kim, H., B. Konnanath, P. Sattigeri, J. Wang, A. Mulchandani, N. Myung, M. A. Deshusses, A. Spanias, and B. Bakkaloglu. “Electronic-nose for detecting environmental pollutants: Signal processing and analog front-end design.” Analog Integrated Circuits and Signal Processing 70, no. 1 (January 1, 2012): 15–32. https://doi.org/10.1007/s10470-011-9638-1.
Kim H, Konnanath B, Sattigeri P, Wang J, Mulchandani A, Myung N, et al. Electronic-nose for detecting environmental pollutants: Signal processing and analog front-end design. Analog Integrated Circuits and Signal Processing. 2012 Jan 1;70(1):15–32.
Kim, H., et al. “Electronic-nose for detecting environmental pollutants: Signal processing and analog front-end design.” Analog Integrated Circuits and Signal Processing, vol. 70, no. 1, Jan. 2012, pp. 15–32. Scopus, doi:10.1007/s10470-011-9638-1.
Kim H, Konnanath B, Sattigeri P, Wang J, Mulchandani A, Myung N, Deshusses MA, Spanias A, Bakkaloglu B. Electronic-nose for detecting environmental pollutants: Signal processing and analog front-end design. Analog Integrated Circuits and Signal Processing. 2012 Jan 1;70(1):15–32.
Journal cover image

Published In

Analog Integrated Circuits and Signal Processing

DOI

EISSN

1573-1979

ISSN

0925-1030

Publication Date

January 1, 2012

Volume

70

Issue

1

Start / End Page

15 / 32

Related Subject Headings

  • Electrical & Electronic Engineering
  • 4009 Electronics, sensors and digital hardware
  • 4008 Electrical engineering
  • 1005 Communications Technologies
  • 0906 Electrical and Electronic Engineering