Low-Limit Warning of Mine Gas by 2f -Detection Based on Tunable Fiber Laser

Yan Yan Sun; Fei Chen

doi:10.4028/www.scientific.net/AMM.303-306.607

Paper Titles

The Study of Test Stimulus Optimization of Analog Circuit Based on AS-PSO Hybrid Algorithm
p.582

Thermocouple Automatic Verificating Device Based on Virtual Instrument Technology
p.588

Total Transfer Capability Calculation Based on Static Load Model Using Real-Time Fault Recording Data
p.597

Research on the Measurement and Control Technology of Controllable Alternating Magnetic Field Generator to Magnetized Breed
p.601

Low-Limit Warning of Mine Gas by 2f -Detection Based on Tunable Fiber Laser
p.607

Research of EAN-13 Barcode Identification Based on Unitary Decimalization
p.611

Research on Boundary Detection for Turnout Rail Components Based on Machine Vision
p.617

The Water Level Automatic Measurement Technology Based on Image Processing
p.621

A Review of Geometric Error Modeling and Error Detection for CNC Machine Tool
p.627

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 303-306Low-Limit Warning of Mine Gas by 2f -Detection...

Low-Limit Warning of Mine Gas by 2f -Detection Based on Tunable Fiber Laser

Abstract:

Mine gas composition is complex, and its main component is methane (CH4), followed by carbon dioxide (CO2) and nitrogen (N2), also contains a small amount or trace amount of heavy hydrocarbon gases (ethane, propane, butane, pentane, etc.) , Hydrogen (H2), carbon monoxide (CO), sulfur dioxide (SO2), hydrogen sulfide (H2S) and so on. For gas detection, the gas compositions above with listed behind CH4 becomes its interference noise. A second harmonic modulation of the fiber laser was used to achieve low concentration of coal mine gas monitoring against a multi-component-gas background noise, and an early warning can be accomplished.

You might also be interested in these eBooks

Sensors, Measurement and Intelligent Materials

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volumes 303-306)

Pages:

607-610

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.303-306.607

Citation:

Cite this paper

Online since:

February 2013

Authors:

Yan Yan Sun, Fei Chen

Keywords:

2f Tunable Fiber Laser, Low-Limit Warning, Mine Gas, Multi-Gas Background Noise

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] http: /www. netdecheck. com/en/emerging_technologies/laser_methane/coal_mine/index. htm.

Google Scholar

[2] http: /www. geotechuk. com/products/coal-mine-methane. aspx.

Google Scholar

[3] J. T. C. Liu, J. B. Jeffries, and R. K. Hanson, in: Large-modulation-depth 2f spectroscopy with diode lasers for rapid temperature and species measurements in gases with blended and broadened spectra. Vol. 43 (2004), pp.6500-6509.

DOI: 10.1364/ao.43.006500

Google Scholar

[4] Zhiying Wu and Nannan Gai: Independent Component Analysis of Multiple-component Gaseous Photoacoustic Spectroscopy to Determine Feature Absorption. Advanced Materials Research, Vols. 518-523(2012), pp.1544-1551.

DOI: 10.4028/www.scientific.net/amr.518-523.1544

Google Scholar

[5] Zhiying Wu, Wang Zhang, Jianwei Wang and Qingxu Yu: Improvement of Signal to Noise Ratio and Detection Limit for Gas-Photoaoustic-Signal Detection Based on Feature Extraction in Blind Source Separation. ACL, Vol. 2 (2012), p.27 – 32.

DOI: 10.1080/22297928.2012.10648249

Google Scholar