646
Figure 5. Mobile phone data display.
5 CONCLUSION
This paper describes a novel laser methane sensor, which is based on VCSEL laser technology to use temperature and pressure compensation schemes to achieve a large operational
temperature range and a large pressure range. The laser methane sensor accurately measured
the methane concentration in the temperature range of –15°C∼55°C, at a pressure range of
30∼200 kpa, and is suitable for gas drainage monitoring. The monitoring system employs
the NB Internet of Things technology to achieve remote real-time monitoring anytime and
anywhere in the application of gas drainage pipelines.
REFERENCES
Cheng Y.P., etc. 2006. Practice and application of coal mine gas control “drainage before mining”. Journal of Mining and Safety Engineering, 2006, 23 (4): 389–392.
Liu J. Safety Guarantee Technology for Pipeline Transportation of Low Concentration Gas in Coal
Mines. Shanxi Coal, 2011, 31 (5): 65–66.
Liu W.Q. etc. High sensitive differential absorption spectroscopy for air quality monitoring. Optical
technology, 2005 (3): 288–291.
Li Y.F. etc. Gas extraction pipeline safety monitoring system based on optical fiber sensing technology,
Shandong Science 2014.
Provisional Standards for Gas Drainage in Coal Mines. (http://www.safehoo.com/Laws/Trade/
Coal/201110/202475.shtml). Safety Management Network.
Wang Y.J. Research on harmful gas measurement technology based on optical fiber spectral absorption.
Yanshan University, Qinhuangdao, 2007.
Xu Z. 2011. Development of methane detector in coal mine gas detection. Wuhan University of Science
and Technology.
Ye X.F. etc. Research on CH4 Gas Optical Fiber Sensor. Semiconductor Photoelectric, 2000, 21 (3):
218–220.
Zhao Y.J. etc. Application of optical fiber methane monitoring system based on spectral absorption in
gas extraction. Spectroscopy and spectral analysis, 2010, 30.
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Concentration
Ambient temperature Ambient pressure
Figure 5. Mobile phone data display.
5 CONCLUSION
This paper describes a novel laser methane sensor, which is based on VCSEL laser technology to use temperature and pressure compensation schemes to achieve a large operational
temperature range and a large pressure range. The laser methane sensor accurately measured
the methane concentration in the temperature range of –15°C∼55°C, at a pressure range of
30∼200 kpa, and is suitable for gas drainage monitoring. The monitoring system employs
the NB Internet of Things technology to achieve remote real-time monitoring anytime and
anywhere in the application of gas drainage pipelines.
REFERENCES
Cheng Y.P., etc. 2006. Practice and application of coal mine gas control “drainage before mining”. Journal of Mining and Safety Engineering, 2006, 23 (4): 389–392.
Liu J. Safety Guarantee Technology for Pipeline Transportation of Low Concentration Gas in Coal
Mines. Shanxi Coal, 2011, 31 (5): 65–66.
Liu W.Q. etc. High sensitive differential absorption spectroscopy for air quality monitoring. Optical
technology, 2005 (3): 288–291.
Li Y.F. etc. Gas extraction pipeline safety monitoring system based on optical fiber sensing technology,
Shandong Science 2014.
Provisional Standards for Gas Drainage in Coal Mines. (http://www.safehoo.com/Laws/Trade/
Coal/201110/202475.shtml). Safety Management Network.
Wang Y.J. Research on harmful gas measurement technology based on optical fiber spectral absorption.
Yanshan University, Qinhuangdao, 2007.
Xu Z. 2011. Development of methane detector in coal mine gas detection. Wuhan University of Science
and Technology.
Ye X.F. etc. Research on CH4 Gas Optical Fiber Sensor. Semiconductor Photoelectric, 2000, 21 (3):
218–220.
Zhao Y.J. etc. Application of optical fiber methane monitoring system based on spectral absorption in
gas extraction. Spectroscopy and spectral analysis, 2010, 30.
IAJ!i!f!Q
.•. 0
·•· 0
.•. 0
·•· 0
6 GJG1oo
11m
cmm
..
11j'l'_h!l
/jj ~ft!l
&i£1U!I
~~ L'f,.ifi"II': IIC.11.\tll
: ~
t= t=
!
~
. +
-. .... ~~ "
I
u
' +
·-. ..........
• ~:::>
- - - ... -
·~
-
:t:.
:tr. ::r. ::11.
!
~ +
Main interface
Concentration
Ambient temperature Ambient pressure