scholarly journals All-optical fiber multi-point photoacoustic spectroscopic gas sensing system

2018 ◽  
Author(s):  
Congzhe Zhang ◽  
Yuanhong Yang ◽  
Yuechuan Lin ◽  
Yanzhen Tan ◽  
Michael Lengden ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Gas Sensing ◽  
Sensing System ◽  
All Optical

Experimental research of optical fiber hydrogen gas sensing system based on palladium-silver alloy

2016 ◽  
Vol 12 (6) ◽  
pp. 413-416 ◽  
Author(s):  
Lu-jun Cui ◽  
Gao-feng Zhou ◽  
Zheng-feng Li ◽  
Yan-long Cao
Keyword(s):  
Optical Fiber ◽  
Experimental Research ◽  
Gas Sensing ◽  
Hydrogen Gas ◽  
Silver Alloy ◽  
Sensing System ◽  
Palladium Silver

A Differential Absorption Based Optical Fiber Methane Gas Sensing System

2014 ◽  
Vol 43 (4) ◽  
pp. 428002 ◽  
Author(s):  
荆耀秋 JING Yao-qiu ◽  
江毅 JIANG Yi ◽  
肖尚辉 XIAO Shang-hui ◽  
江艳 JIANG Yan
Keyword(s):  
Optical Fiber ◽  
Gas Sensing ◽  
Differential Absorption ◽  
Methane Gas ◽  
Sensing System

Novel Optical Fiber Gas Sensing System Based on FBG Filtering

2011 ◽  
Vol 295-297 ◽  
pp. 1021-1028
Author(s):  
Shu Tao Wang ◽  
Peng Wei Zhang ◽  
Le Gong ◽  
Xiao Qing Shao
Keyword(s):  
Optical Fiber ◽  
Gas Sensing ◽  
Light Signal ◽  
Processing Unit ◽  
Optical Fiber Coupler ◽  
Fiber Coupler ◽  
Sensing System ◽  
Gas Detector ◽  
Fiber Collimator ◽  
Difference Absorption

Based on law of Beer-Lambert, a novel optical fiber gas sensing system is designed to determine the concentration of gas. The narrow-band filtering characteristic of optical fiber Bragg grating is used by this system to produce the narrow spectrum light signal which is wanted in difference absorption measuring. The system has full optical fiber structure, which is mainly composed by super luminescent emitting diode (SLED), optical fiber of 10km, optical fiber gas detector, optical fiber isolator, optical fiber coupler network, optical fiber detecting grating, photoelectric detector and data processing unit. The aspheric objective optical fiber collimator is adopted by this system to compose optical fiber gas sensing detector, which enhances the optic stability of the detector, diminishes the injection loss and makes the echo signal of the optical fiber detector greatly diminished. Experimental data and results show that this system has its feasibility and it can be used for real time monitoring of gas concentration in the domains of colliery and natural gas station, etc.

Study on Data Processing in Optical Fiber Gas Sensing System Based on Membrane Computing

2014 ◽  
Vol 1044-1045 ◽  
pp. 1339-1342
Author(s):  
Hao Li ◽  
Meng Ran Zhou ◽  
Le Zhang
Keyword(s):  
Optical Fiber ◽  
Data Processing ◽  
Computational Efficiency ◽  
Membrane Computing ◽  
Gas Sensing ◽  
Computational Cost ◽  
Utilization Rate ◽  
System Response ◽  
Sensing System ◽  
Parallel Data

Aiming at the problem of multi point (32 and above) EFPI optical fiber gas sensing system in processing data, for instance, weak ability of parallel data processing, low computational efficiency, slow system response etc., this paper utilizing the advantage like maximum concurrent and distributed of membrane computing system studied a method of parallel data processing. This method adopted a algorithm called Bio-inspired Algorithm based on Membrane Computing-BIAMC compared to the commonly used Genetic Algorithm (GA) has less computational cost and higher computational efficiency. Firstly,4 Standard constrained functions was used as test and contrast function and then the improved algorithm is applied to the parallel data processing, to validate the quantitative analysis and effectiveness, in the end, through the simulation to verify the superiority of the algorithm in robustness and accuracy. The experimental results showed that with taking the parallel feature of data input into consideration the BIAMC which applying to EFPI optical fiber gas sensing system have improved the speed of data processing and the utilization rate of hardware system and the response time of whole system compared to the traditional serial processing method, which provided a new method of parallel data processing in multi-channel sensor system.

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