A fast high-spatial-resolution Raman distributed temperature sensor

2014 ◽  
Author(s):  
Y. Chen ◽  
A. H. Hartog ◽  
R. J. Marsh ◽  
I. M. Hilton ◽  
M. R. Hadley ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Temperature Sensor ◽  
High Spatial Resolution ◽  
Distributed Temperature Sensor

Spatial Resolution Improvement of Distributed Optical Fiber Raman Temperature Sensor System by Using Amplitude Modification Algorithm

2013 ◽  
Vol 552 ◽  
pp. 393-397
Author(s):  
Zhong Xie Jin ◽  
Hai Peng Zhu
Keyword(s):  
Optical Fiber ◽  
Spatial Resolution ◽  
Temperature Sensor ◽  
High Spatial Resolution ◽  
Sensor System ◽  
Fiber Axis ◽  
Temperature Changes ◽  
Amplitude Coefficient ◽  
Resolution Improvement ◽  
Distributed Optical Fiber

Spatial resolution is an important parameter in distributed optical fiber Raman temperature sensor system (DOFRTS). In this paper, a 10 kilometers long DOFRTS with spatial resolution of about 6 meters is constructed. The spatial resolution is limited by electrical bandwidth of the photodetector circuit and the data acquisition part. The abrupt temperature changes along the fiber axis are treated as temporal pulse signals, and a linear amplitude coefficient modification algorithm is used to improve the spatial resolution. The experimental results show that the temperature amplitudes from 3 meters region to 6 meters can be modified accurately. Therefore, a DOFRTS of high spatial resolution but low system cost could be successfully constructed.

scholarly journals Two-Dimensional Spatial Resolution in Plane Temperature Monitoring Based on Raman Distributed Temperature Sensor

2020 ◽  
Author(s):  
Junfan Chen ◽  
Ning Sun ◽  
Zhongxie Jin
Keyword(s):  
Temperature Field ◽  
Field Distribution ◽  
Spatial Resolution ◽  
Temperature Sensor ◽  
Temperature Sensing ◽  
Two Dimensional ◽  
Distributed Temperature Sensing ◽  
Temperature Field Distribution ◽  
Sensing System ◽  
Distributed Temperature Sensor

Spatial resolution is an important parameter that characterizes the detection capability of a system, and there are extremely high requirements for spatial resolution in important fields such as the fossil energy industry and nuclear industry. In order to realize the high-precision distributed monitoring of the optical fiber distributed temperature sensing system (DTS), the factors affecting the spatial resolution of the DTS system were analyzed, and a two-dimensional planar temperature field distribution monitoring scheme based on Raman distributed temperature sensor (RDTS) was proposed. In this scheme, based on the layout of the two-dimensional RDTS heat source positioning system, multimode fiber was adopted. After comparing several sensing fiber routing schemes, the 45∘ skew 2D wiring method of sensing fiber was finally selected. According to the experimental results, the spatial resolution of the temperature field distribution in the monitoring area can break through the limitation of the system resolution. It has more application value than the traditional one-dimensional distributed temperature sensing system.

Raman-based distributed temperature sensor with 1 m spatial resolution over 26 km SMF using low-repetition-rate cyclic pulse coding

2011 ◽  
Vol 36 (13) ◽  
pp. 2557 ◽  
Author(s):  
Marcelo A. Soto ◽  
Tiziano Nannipieri ◽  
Alessandro Signorini ◽  
Andrea Lazzeri ◽  
Federico Baronti ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Temperature Sensor ◽  
Repetition Rate ◽  
Distributed Temperature Sensor
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