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Open AccessArticle

A Portable Laser Photoacoustic Methane Sensor Based on FPGA

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School of Information Engineering, Robot Technology Used for Special Environment Key Laboratory of Sichuan Province, Southwest University of Science and Technology, Mianyang 621010, China
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Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology and Research Center of Laser Fusion CAEP, Mianyang 621010, China
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Author to whom correspondence should be addressed.
Academic Editor: Markus W. Sigrist
Sensors 2016, 16(9), 1551; https://doi.org/10.3390/s16091551
Received: 28 July 2016 / Revised: 5 September 2016 / Accepted: 15 September 2016 / Published: 21 September 2016
(This article belongs to the Section Physical Sensors)
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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MDPI and ACS Style

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

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