LaserSPECks:: laser SPECtroscopic trace-gas sensor networks - sensor integration and applications

ABSTRACT

We introduce a novel laser spectroscopic trace-gas sensor platform, LaserSPECks that integrates recently developed miniature quartz-enhanced photoacoustic spectroscopy (QE-PAS) gas sensing technology. This universal platform uses infrared laser spectroscopy detect and quantify numerous gas species at part-per-million to part-per-billion (ppm-ppb) concentrations [2]. Traditional gas sensing devices capable of the same sensitivity and specificity are several orders of magnitude larger in size, cost, and power consumption. Thus, high resolution gas sensing technology has been difficult to integrate into small, low-power, replicated sensors suitable for wireless sensor networks (WSNs). This paper presents the principles behind laser based trace gas detection, design issues, and outlines the implementation of a miniaturized trace-gas sensor from commerical-off-the-shelf (COTS) components. We report on an early prototype as a proof-of-concept for integration into WSN applications. We also describe a number of ongoing collaborations in utilizing the platform in air pollution and carbon ux quantification, industrial plant control, explosives detection, and medical diagnosis. Furthermore, we discuss experimental performance evaluations to examine general platform requirements for these types of sensors. The results of our evaluation illustrate that our prototype improves upon previous gas sensing technology by two orders of magnitude in measures of power consumption, size, and cost, without sacrificing sensor performance. Our design and experiments reveal that laser-based trace-gas sensors built from COTS can be successfully implemented and integrated within WSN nodes to enable a wide range of new and important sensing applications.

REFERENCES

• 1: C. Chen and Z. Li. A Low-Power CMOS Analog Multiplier. IEEE Trans. Circ. Sys. II, 53(2):100--104, 2006.
• 2: R. Curl and F. Tittel. Tunable infrared laser spectroscopy. Annu. Rep. Prog. Chem. C, (98):217--270, 2002.
• 3: A. Kosterev, Y. Bakhirkin, R. Curl, and F. Tittel. Quartz-enhanced photoacoustic spectroscopy. Opt. Lett., 27:1902--1904, 2002.
• 4: A. Kosterev, Y. Bakhirkin, and F. Tittel. Ultrasensitive gas detection by quartz-enhanced photoacoustic spectroscopy in the fundamental molecular absorption bands region. Appl. Phys. B, (80):133--138, 2005.
• 5: A. Kosterev, T. Moseley, and F. Tittel. Impact of humidity on quartz-enhanced photoacoustic spectroscopy based detection of HCN. Appl. Phys. B, (85):295--300, 2006.
• 6: A. Kosterev, F. Tittel, D. Serebryakov, A. Malinovsky, and I. Morozov. Applications of quartz tuning forks in spectroscopic gas sensing. Rev. of Sci. Instr., 76(043105), 2005.
• 7: A. Mandelis. Signal-to-noise ratio in lock-in amplifier synchronous detection: A generalized communications systems approach with applications to frequency, time, and hybrid (rate window) photothermal measurements. Rev. of Sci. Instr., (65):3309, 1994.
• 8: Y. Matsuyoshi, Y. Satoh, T. Shinozaki, E. Suzuki, and N. Nagata. High-speed and sensitive multiple-point ammonia gas monitor system. In Semiconductor Manufacturing Conference Proceedings, 1999 IEEE International Symposium on, pages 409--412, 1999.
• 9: M. R. McCurdy, Y. A. Bakhirkin, and F. Tittel. Quantum cascade laser-based integrated cavity output spectroscopy of exhaled nitric oxide. Appl. Phys. B, (85):445--452, 2006.
• 10: B. Moeskops, H. Naus, S. Cristescu, and F. Harren. Quantum cascade laser-based carbon monoxide detection on a second time scale from human breath. Appl. Phys. B, (82):649--654, 2006.
• 11: C. C. Mulligan, D. R. Justes, R. J. Noll, N. L. Sanders, B. C. Laughlin, and R. G. Cooks. Direct monitoring of toxic compounds in air using a portable mass spectrometer. Analyst, (131):556--567, 2006.
• 12: C. Panichi and G. L. Ruffa. Stable isotope geochemistry of fumaroles: an insight into volcanic surveillance. J. of Geodynamics, 32(4--5):519--542, 2001.
• 13: Joseph Polastre , Robert Szewczyk , David Culler, Telos: enabling ultra-low power wireless research, Proceedings of the 4th international symposium on Information processing in sensor networks, April 24-27, 2005, Los Angeles, California
• 14: L. S. Rothman, A. Barbe, D. C. Benner, L. R. Brown, C. Camy-Peyret, M. R. Carleer, K. Chance, C. Clerbaux, V. Dana, V. M. Devi, A. Fayt, J.-M. Flaud, R. R. Gamache, A. Goldman, D. Jacquemart, K. W. Jucks, W. J. Lafferty, J.-Y. Mandin, S. T. Massie, V. Nemtchinov, D. A. Newnham, A. Perrin, C. P. Rinsland, J. Schroeder, K. M. Smith, M. A. H. Smith, K. Tang, R. A. Toth, J. V. Auwera, P. Varanasi, and K. Yoshino. The HITRAN molecular spectroscopic database: edition of 2000 including updates through 2001. J. Quant. Spectrosc. Radiat. Transfer, (82):5--44, 2003
• 15: J. Silver and M. Zondlo. High-precision CO2 sensor for meteorological balloons. In S. Christesen, A. S. III, J. Gillespie, and K. Ewing, editors, Optics East, volume 6378-15, page 63780J. SPIE, 2006.
• 16: D. Smith, T. Wang, J. Sule-Suso, P. Spanel, and A. El Haj. Quantification of acetaldehyde released by lung cancer cells in vitro using selected ion ow tube mass spectrometry. Rapid Comm. in Mass Spectr., 77(8):845--850, 2003.
• 17: S. So, G. Wysocki, J. Frantz, and F. Tittel. Development of DSP controlled quantum cascade laser-based trace gas sensor technology. IEEE Sensors J., 6(5):1057--1067, 2006.
• 18: M. O. Sonnaillon and F. J. Bonetto. A low-cost, high-performance, digital signal processor-based lock-in amplifier capable of measuring multiple frequency sweeps simultaneously. Rev. of Sci. Instr., 76(024703), 2005.
• 19: S. Strozecki. Switching regulator forms constant-current source. EDN magazine, page 92, May 2002.
• 20: Texas Instruments. SLOS390A, DRV592 Datasheet, 2002.
• 21: T. L. Toan, F. Ribbes, L.-F. Wang, N. Floury, K.-H. Ding, J. A. Kong, M. Fujita, and T. Kurosu. Rice crop mapping and monitoring using ERS -1 data based on experiment and modeling results. IEEE Trans. on Geoscience and Remote Sensing, 35(1):41--56, 1997.
• 22: M. Webber, T. MacDonald, M. B. Pushkarsky, C. K. N. Patel, Y. Zhao, N. Marcillac, and F. M. Mitloehner. Agricultural ammonia sensor using diode lasers and photoacoustic spectroscopy. Meas. Sci. and Tech., 16:1547--1553, 2005.
• 23: C. Webster, G. Flesch, K. Mansour, R. Haberle, and J. Bauman. Mars laser hygrometer. Appl. Opt., (27):4436--4445, 2004.
• 24: D. Weidmann, A. A. Kosterev, F. K. Tittel, N. Ryan, and D. McDonald. Application of a widely electrically tunable diode laser to chemical gas sensing with quartz-enhanced photoacoustic spectroscopy. Opt. Lett., 29(16):1837--1839, 2004.
• 25: E. Welsh, W. Fish, and J. Frantz. GNOMES: A testbed for low-power heterogeneous wireless sensor networks. In IEEE International Symposium on Circuits and Systems (ISCAS), volume 4, pages 836--839, 2003.
• 26: Geoffrey Werner-Allen , Konrad Lorincz , Matt Welsh , Omar Marcillo , Jeff Johnson , Mario Ruiz , Jonathan Lees, Deploying a Wireless Sensor Network on an Active Volcano, IEEE Internet Computing, v.10 n.2, p.18-25, March 2006 [doi>10.1109/MIC.2006.26]
• 27: M. Wojcik, M. Phillips, B. Cannon, and M. Taubman. Gas-phase photoacoustic sensor at 8.41μm using quartz tuning forks and amplitude-modulated quantum cascade lasers. Appl. Phys. B, 85:307--313, 2006.
• 28: G. Wysocki, A. Kosterev, and F. Tittel. Influence of molecular relaxation dynamics on quartz-enhanced photoacoustic detection of CO2 at λ = 2 μm. Appl. Phys. B, (85):301--306, 2006.
• 29: G. Wysocki, M. McCurdy, S. So, D. Weidmann, C. Roller, R. F. Curl, and F. K. Tittel. Pulsed quantum-cascade laser-based sensor for trace-gas detection of carbonyl sulfide. Appl. Opt., 43(32):6040--6046, 2004.

INDEX TERMS

Primary Classification:
  C. Computer Systems Organization
  C.5 COMPUTER SYSTEM IMPLEMENTATION
      C.5.m Miscellaneous

Additional Classification:
  J. Computer Applications
  J.2 PHYSICAL SCIENCES AND ENGINEERING
      Subjects: Chemistry

General Terms:
Design, Performance

Keywords:
lasers, sensors, spectroscopy, trace gas sensing