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Sensors 2016, 16(9), 1551; doi:10.3390/s16091551

A Portable Laser Photoacoustic Methane Sensor Based on FPGA

1
School of Information Engineering, Robot Technology Used for Special Environment Key Laboratory of Sichuan Province, Southwest University of Science and Technology, Mianyang 621010, China
2
Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology and Research Center of Laser Fusion CAEP, Mianyang 621010, China
*
Author to whom correspondence should be addressed.
Academic Editor: Markus W. Sigrist
Received: 28 July 2016 / Revised: 5 September 2016 / Accepted: 15 September 2016 / Published: 21 September 2016
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [4349 KB, uploaded 21 September 2016]   |  

Abstract

A portable laser photoacoustic sensor for methane (CH4) detection based on a field-programmable gate array (FPGA) is reported. A tunable distributed feedback (DFB) diode laser in the 1654 nm wavelength range is used as an excitation source. The photoacoustic signal processing was implemented by a FPGA device. A small resonant photoacoustic cell is designed. The minimum detection limit (1σ) of 10 ppm for methane is demonstrated. View Full-Text
Keywords: FPGA; photoacoustic spectroscopy; diode laser; methane FPGA; photoacoustic spectroscopy; diode laser; methane
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Wang, J.; Wang, H.; Liu, X. A Portable Laser Photoacoustic Methane Sensor Based on FPGA. Sensors 2016, 16, 1551.

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