scholarly journals Evaluation of Fiber Bragg Grating and Distributed Optical Fiber Temperature Sensors

2017 ◽  
Author(s):  
Kelly Marie McCary
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Temperature Sensors ◽  
Bragg Grating ◽  
Distributed Optical Fiber

Temperature Researches of Porcelain Insulator

2013 ◽  
Vol 718-720 ◽  
pp. 1734-1739
Author(s):  
Cheng Jun Zhao ◽  
Chuan Li ◽  
Xu Zhang ◽  
Zhen Gang Zhao ◽  
Ying Na Li ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Temperature Sensors ◽  
Pollution Level ◽  
Bragg Grating ◽  
Current Increase ◽  
Porcelain Insulator ◽  
Level Ii ◽  
Long Time ◽  
Optical Fiber Bragg Grating

When porcelain insulator operates in a harsh environment for a long time, it will cause leakage current increase, and lead to heating phenomenon. As a result, the temperature of porcelain insulator can be changed, which probably due to crack, breakdown or other factors. In order to reflect the working state of the porcelain insulator, to monitor the temperature of porcelain insulator, optical fiber Bragg grating temperature sensors are installed respectively on the steel cap and the porcelain of porcelain insulator. In the interaction of industrial frequency voltage test of 15kV, thus the temperature of porcelain insulator can be distributed. The temperature of the porcelain insulator affects the center wavelength of optical fiber Bragg grating temperature sensors, which are installed on porcelain insulator. The tests show that in the pure condition, the temperature of porcelain insulator's steel cap and porcelain respectively rise 1.4°C and 1.5°C, in the polluted condition, the temperature of porcelain insulator's steel cap and porcelain respectively rise 5.8°C and 6.3°C, in the pollution level II condition, the temperature of Porcelain insulator's steel cap and porcelain respectively rise 6.8°C and 7.2°C. Therefore, by using optical fiber Bragg grating temperature sensors to monitor the change of porcelain insulator's temperature, combined with the researches of temperature characteristics, can directly reflect the porcelain insulator's working situation and real-time online monitoring.

Simulation of Fiber Bragg Grating Characteristics and Behaviors as Strain and Temperature Sensor

2021 ◽  
Vol 9 (11) ◽  
pp. 1154-1161
Author(s):  
Muhammad Arif Bin Jalil
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Temperature Sensor ◽  
Optical Fiber Sensor ◽  
Temperature Sensors ◽  
Bragg Reflector ◽  
Sensor Technology ◽  
Bragg Grating ◽  
And Behaviors ◽  
And Behavior

Abstract: Optical Fiber Sensor (OFS) has come quite considerable and famous in world of sensor technology where it has been used widely to detect for a changeable environment and responds to some output on other system such as in industrial, chemical analysis and monitoring. A Fiber Bragg Grating (Fiber Bragg Grating) is a kind of appropriated where the short fragment of optical fiber which certain and specific wavelength is reflected with light and the Bragg reflector started developed and transmits all others. The current project is concerned with the development characteristics and behaviors of strain and temperature sensors acting on Fiber Bragg Grating by a computer simulation. This study focuses on analyzing the performance of the characteristics and behavior of strain and temperature sensors acting on Fiber Bragg Grating. A strain sensor is used to measure strain on an object of which the resistance varies range with applied force. Meanwhile,for the temperature sensor is used to measure and detect any abnormality of temperature acting on Fiber Bragg Grating such as can lead into fire and accidents. This will found out on how Fiber Bragg Grating can demonstrate strain and temperature sensors. A simulation of the computer program (MATLAB) will be carried out to simulate due to the strain and temperature sensor of Fiber Bragg Grating. Keywords Fiber Bragg Grating, sensors; Strain; Temperature; Simulation; MATLAB

Research of Intelligent Clothing for Body Temperature Monitoring Based on Distributed Optical Fiber Bragg Grating Sensors

2009 ◽  
Vol 29 (1) ◽  
pp. 208-212 ◽  
Author(s):  
李鸿强 Li Hongqiang ◽  
于晓刚 Yu Xiaogang ◽  
苗长云 Miao Changyun ◽  
李恩邦 Li Enbang ◽  
习江涛 Xi Jiangtao ◽  
...  
Keyword(s):  
Body Temperature ◽  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Temperature Monitoring ◽  
Bragg Grating ◽  
Fiber Bragg Grating Sensors ◽  
Distributed Optical Fiber ◽  
Intelligent Clothing ◽  
Optical Fiber Bragg Grating

Dynamic response of optical fiber Bragg grating temperature sensors

2010 ◽  
Author(s):  
Gleison E. da Silva ◽  
Josemir C. Santos ◽  
Vilson R. de Almeida ◽  
Rogério M. Caso
Keyword(s):  
Dynamic Response ◽  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Temperature Sensors ◽  
Bragg Grating ◽  
Optical Fiber Bragg Grating

scholarly journals Application of Multiscale Fiber Optical Sensing Network Based on Brillouin and Fiber Bragg Grating Sensing Techniques on Concrete Structures

2012 ◽  
Vol 8 (10) ◽  
pp. 310797 ◽  
Author(s):  
Xuefeng Zhao ◽  
Jie Lu ◽  
Ruicong Han ◽  
Xianglong Kong ◽  
Yanhong Wang ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
High Sensitivity ◽  
Bragg Grating ◽  
Accurate Information ◽  
Long Distance ◽  
Fiber Sensing ◽  
Sensing Technology ◽  
Optical Fiber Sensing ◽  
Distributed Optical Fiber

The paper reports the application of the distributed optical fiber sensing technology and the FBG sensing technology in bridge strain monitoring; the overall changeable characteristics of the whole structure can be obtained through the distributed optical fiber sensing technology (BOTDA), meanwhile the accurate information of local important parts of the structure can be obtained through the optical fiber Bragg grating sensor (FBG), which can improve the accuracy of the monitoring. FBG sensor has a high sensitivity, but it can only realize the measurement of local discrete points for the quasidistributed sensing. BOTDA can realize the long distance and distributed measurement, but its spatial resolution is not high. FBG and BOTDA were applied together in bridge monitoring in this test, taking full advantage of the distributed BOTDA on the overall strain measurements of the structure, as well as monitoring the key parts by the arrangement of FBG. The combined application of BOTDA and FBG can achieve the overall monitoring from point to line and then to the surface and, therefore, obtain more comprehensive information on the strain of the test structure.

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