Measurement accuracy and spatial resolution of a distributed temperature sensor based on a two-pulse differential coherent reflectometer

2020 ◽  
Vol 50 (9) ◽  
pp. 882-887
Author(s):  
T O Lukashova ◽  
O E Nanii ◽  
S P Nikitin ◽  
V N Treshchikov
Keyword(s):  
Spatial Resolution ◽  
Temperature Sensor ◽  
Measurement Accuracy ◽  
Distributed Temperature Sensor

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.

scholarly journals Raman Distributed Temperature Sensor with Optical Dynamic Difference Compensation and Visual Localization Technology for Tunnel Fire Detection

Sensors ◽  
2019 ◽  
Vol 19 (10) ◽  
pp. 2320 ◽  
Author(s):  
Baoqiang Yan ◽  
Jian Li ◽  
Mingjiang Zhang ◽  
Jianzhong Zhang ◽  
Lijun Qiao ◽  
...  
Keyword(s):  
Temperature Measurement ◽  
Temperature Sensor ◽  
Measurement Accuracy ◽  
Engineering Application ◽  
Optical Power ◽  
Fire Detection ◽  
Visual Localization ◽  
Power Fluctuation ◽  
Tunnel Fire ◽  
Distributed Temperature Sensor

The field of tunnel fire detection requires a Raman distributed temperature sensor (RDTS) with high-accuracy and visual localization. A novel temperature demodulation method to improve the temperature measurement accuracy of the RDTS systems is presented. This method is based on the optical dynamic difference compensation algorithm, which can eliminate the optical power fluctuation. In addition, the visual localization technology is presented by using the longitudinal lining model (LLM) of a three-dimensional (3D) temperature display, which enhances the engineering application of RDTS in tunnel fire detection. Experimental results indicate that the temperature measurement accuracy is optimized from 7.0 °C to 1.9 °C at the sensing distance of 18.27 km by using the presented method. We provide a solution for temperature field monitoring as well as fire visual localization of the tunnel through RDTS systems.

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

Improving spatial resolution in fiber Raman distributed temperature sensor by using deconvolution algorithm

2009 ◽  
Vol 7 (7) ◽  
pp. 560-563 ◽  
Author(s):  
张磊 Lei Zhang ◽  
冯雪 Xue Feng ◽  
张巍 Wei Zhang ◽  
刘小明 Xiaoming Liu
Keyword(s):  
Spatial Resolution ◽  
Temperature Sensor ◽  
Distributed Temperature Sensor ◽  
Deconvolution Algorithm

scholarly journals Chalcogenide fiber-based distributed temperature sensor with sub-centimeter spatial resolution and enhanced accuracy

2014 ◽  
Vol 22 (2) ◽  
pp. 1560 ◽  
Author(s):  
Trung D. Vo ◽  
Jiakun He ◽  
Eric Magi ◽  
Matthew J. Collins ◽  
Alex S. Clark ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Temperature Sensor ◽  
Distributed Temperature Sensor

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
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