Advanced embedded control and data acquisition systems for laser-based quartz-enhanced photoacoustic spectroscopy

Stephen G. So, Omar Al Rifai, Gerard Wysocki, Anatoliy A. Kosterev, Frank K. Tittel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This work describes the development of low-power embedded systems for miniature quartz-enhanced photoacoustic spectroscopy (QEPAS) laser based trace gas sensors. Such sensors must address the following functions simultaneously: 1) laser current control, 2) laser temperature control, 3) multi-harmonic quadrature lock-in amplification, and 4) digital data processing. Currently used methods for control and acquisition result in shoebox sized sensors requiring ∼3 to 4W of electrical power consumption, which is too high for portable energy harvesting powered monitoring. In order to improve sensors to meet required size and cost demands of portable health monitors and environmental sensor networks, we have consolidated and minimized the necessary processing resources for QEPAS sensors. Our processing system has been reduced to a single 10cm × 6.5cm circuit board constructed entirely from low-cost off-the-shelf components, and achieves power consumption of ∼0.2W.

Original languageEnglish (US)
Title of host publicationThe 6th IEEE Conference on SENSORS, IEEE SENSORS 2007
Pages1279-1282
Number of pages4
DOIs
StatePublished - Dec 1 2007
Externally publishedYes
Event6th IEEE Conference on SENSORS, IEEE SENSORS 2007 - Atlanta, GA, United States
Duration: Oct 28 2007Oct 31 2007

Publication series

NameProceedings of IEEE Sensors

Other

Other6th IEEE Conference on SENSORS, IEEE SENSORS 2007
CountryUnited States
CityAtlanta, GA
Period10/28/0710/31/07

All Science Journal Classification (ASJC) codes

  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Advanced embedded control and data acquisition systems for laser-based quartz-enhanced photoacoustic spectroscopy'. Together they form a unique fingerprint.

  • Cite this

    So, S. G., Al Rifai, O., Wysocki, G., Kosterev, A. A., & Tittel, F. K. (2007). Advanced embedded control and data acquisition systems for laser-based quartz-enhanced photoacoustic spectroscopy. In The 6th IEEE Conference on SENSORS, IEEE SENSORS 2007 (pp. 1279-1282). [4388643] (Proceedings of IEEE Sensors). https://doi.org/10.1109/ICSENS.2007.4388643