The development of TDLAS CO2 gas detection system with VCSEL light source

2021 ◽  
Author(s):  
Tongxin Dai ◽  
Biao Wang ◽  
Yongbo Yu ◽  
Linxiang Chen ◽  
Shuo Huang ◽  
...  
Keyword(s):  
Light Source ◽  
Detection System ◽  
Gas Detection ◽  
Co2 Gas

scholarly journals Theoretical Research on Ellipsoidal Structure Methane Gas Detection Based on Near Infrared Light Sources of PbSe Quantum Dots

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Xiaoxue Xing ◽  
Yanmin Lei ◽  
Weiwei Shang ◽  
Limin Du ◽  
Pan Guo
Keyword(s):  
Quantum Dots ◽  
Light Source ◽  
Near Infrared ◽  
Detection System ◽  
Cell Structure ◽  
Detection Sensitivity ◽  
Gas Detection ◽  
Theoretical Research ◽  
Infrared Light ◽  
Light Sources

To improve the precision and sensitivity of the detection in near infrared gas detection system, the selection of light source and design of gas chamber structure are two key links. In this paper, the near infrared (NIR) light sources fabricated with PbSe quantum dots (QDs) and a new gas cell structure using an ellipsoid reflector were designed to test the concentration of methane (CH4). The double wavelengths differential detection method was used in the paper. The signal wavelength is 1.665 μm from the NIR QD-based light source with 5.1 nm PbSe QDs. The reference wavelength is 1.943 μm from the NIR QD-based light source with 6.1 nm PbSe QDs. The experimental results show that the differential gain signal could be enhanced 80 times when the major axis, the focus, and the open length of the ellipsoid reflector are 4.18 cm, 3.98 cm, and 0.36 cm, respectively. The structure will be convenient for the signal amplifying, AD converting, and other process in the latter circuits, and therefore both the detection sensitivity and precision can be improved.

The development of a XEOL and TR XEOL detection system for the I18 microfocus beamline Diamond light source

2013 ◽  
Vol 134 ◽  
pp. 49-58 ◽  
Author(s):  
R.P. Taylor ◽  
A.A. Finch ◽  
J.F.W. Mosselmans ◽  
P.D. Quinn
Keyword(s):  
Light Source ◽  
Detection System

Domestic gas detection system using two SnO2 integrated sensors

1994 ◽  
Vol 19 (1-3) ◽  
pp. 658-660 ◽  
Author(s):  
V. Demarne ◽  
B. Romanowicz ◽  
A. Grisel ◽  
J. Fournier
Keyword(s):  
Detection System ◽  
Gas Detection ◽  
Integrated Sensors

Design of Fire and Gas Detection System for a Process Plant: A Review

2020 ◽  
pp. 271-280
Author(s):  
A. Prashanth Kumar Reddy ◽  
E. Sathwik Reddy ◽  
T. N. S. S. Bhaskar ◽  
Bikarama Prasad Yadav ◽  
Akshi K. Singh
Keyword(s):  
Detection System ◽  
Gas Detection ◽  
Process Plant

Mid-infrared Quantum Cascade Laser Gas Detection System

2018 ◽  
Vol 47 (4) ◽  
pp. 423001
Author(s):  
LIN Bai-yang ◽  
DANG Jing-min ◽  
ZHENG Chuan-tao ◽  
ZHANG Yu ◽  
WANG Yi-ding
Keyword(s):  
Quantum Cascade Laser ◽  
Detection System ◽  
Gas Detection ◽  
Mid Infrared ◽  
Quantum Cascade

A pillar[5]arene-based and OH− dependent dual-channel supramolecular chemosensor for recyclable CO2 gas detection: High sensitive and selective off-on-off response

2020 ◽  
Vol 174 ◽  
pp. 108073 ◽  
Author(s):  
Wen-Bo Zhu ◽  
Tai-bao Wei ◽  
Yan-Qing Fan ◽  
Wen-Juan Qu ◽  
Wei Zhu ◽  
...  
Keyword(s):  
Gas Detection ◽  
Co2 Gas ◽  
Dual Channel
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