Preprint Article Version 1 NOT YET PEER-REVIEWED

Portable Laser Photoacoustic Methane Sensor Based on FPGA

Version 1 : Received: 5 September 2016 / Approved: 6 September 2016 / Online: 6 September 2016 (11:51:45 CEST)

A peer-reviewed article of this Preprint also exists.

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

Journal reference: Sensors 2016, 16, 1551
DOI: 10.3390/s16091551

Abstract

A portable laser photoacoustic sensor based on a Field-Programmable Gate Array (FPGA) is reported for methane detection. A tunable 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 (CH4) is demonstrated.

Subject Areas

FPGA; photoacoustic spectroscopy; diode laser; methane

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