scholarly journals Developing High-Frequency Fiber Bragg Grating Acceleration Sensors to Monitor Transmission Line Galloping

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 30893-30897
Author(s):  
Hongbo Zou ◽  
Mi Lu
Keyword(s):  
Transmission Line ◽  
Fiber Bragg Grating ◽  
High Frequency ◽  
Bragg Grating ◽  
Acceleration Sensors

scholarly journals High-Frequency Fiber Bragg Grating Sensing Interrogation System Using Sagnac-Loop-Based Microwave Photonic Filtering

2009 ◽  
Vol 21 (8) ◽  
pp. 519-521 ◽  
Author(s):  
Hongyan Fu ◽  
Wei Zhang ◽  
Chengbo Mou ◽  
Xuewen Shu ◽  
Lin Zhang ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
High Frequency ◽  
Bragg Grating ◽  
Microwave Photonic

Measurement of Strain Induced by Impact with Fiber Bragg Grating

2008 ◽  
Vol 381-382 ◽  
pp. 435-438
Author(s):  
Ping Yu Zhu ◽  
D. Liu ◽  
Y. Lin
Keyword(s):  
Composite Material ◽  
Fiber Bragg Grating ◽  
Time Domain ◽  
High Frequency ◽  
Impact Test ◽  
Bragg Grating ◽  
Experiment Data ◽  
Frequency Limit ◽  
Fiber Bragg Grating Sensors ◽  
Frequency Components

After deriving the propagation formula of stress wave through incident bar, the measured signals both in horizontal impact test and drop impact tests are investigated with novel fiber Bragg grating sensors(FBGs). Especially those strain signals from FBGs which mounted on the surface of an incident bar are studied. The signals in impactor and the FBGs embedded in the composite material under similar test condition are compared. The dropping and impacting models have been setup. The experiment data measured in a lab are analyzed both in time-domain and in frequency domain. Those ultra-high frequency components in the above strain signals can not be obtained by current FBG measurement system due to frequency limit of the demodulation system. Further study to improve the frequency of demodulation system will be done in next step.

Design and analysis of high-frequency fiber Bragg grating vibration sensor

2020 ◽  
Vol 32 (2) ◽  
pp. 025108
Author(s):  
Hao Wu ◽  
Qijing Lin ◽  
Feng Han ◽  
Libo Zhao ◽  
Zhuangde Jiang
Keyword(s):  
Fiber Bragg Grating ◽  
High Frequency ◽  
Vibration Sensor ◽  
Bragg Grating

scholarly journals A Medium-Frequency Fiber Bragg Grating Accelerometer Based on Flexible Hinges

Sensors ◽  
2021 ◽  
Vol 21 (21) ◽  
pp. 6968
Author(s):  
Zichuang Li ◽  
Lei Liang ◽  
Hui Wang ◽  
Shu Dai ◽  
Ke Jiang ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Fiber Bragg Grating ◽  
Temperature Effects ◽  
Bragg Grating ◽  
Structure Model ◽  
Frequency Range ◽  
Medium Frequency ◽  
Acceleration Sensors ◽  
Compensation Function ◽  
Sensing Characteristics

Mediumfrequency fiber Bragg grating (FBG) acceleration sensors are used in important applications in mechanical, aerospace and weapon equipment, and have strict requirements in terms of resonance frequency and sensitivity. A novel medium-frequency accelerometer, based on fiber Bragg grating and flexible hinges, is proposed in this paper. The differential structure doubles the sensitivity of the sensor while avoiding temperature effects. The structure model and principle for the sensor are introduced, the sensor’s sensing characteristics are theoretically analyzed, and the structure parameters for the sensor are determined through numerical analysis. The sensing experiments show that the resonance frequency of the sensor is approximately 2800 Hz, the sensitivity is 21.8 pm/g in the flat frequency range of 50–1000 Hz, and the proposed sensor has a good temperature self-compensation function and lateral anti-interference capability.

An Overhead Conductor Weighing Sensor Based on Fiber Bragg Grating

2013 ◽  
Vol 462-463 ◽  
pp. 32-38
Author(s):  
Shi Bin Liang ◽  
Hong Lei Yang ◽  
Xue Peng Miao ◽  
Min Cao ◽  
Ming Chang
Keyword(s):  
Transmission Line ◽  
Fiber Bragg Grating ◽  
Temperature Compensation ◽  
Sensitivity Coefficient ◽  
Bragg Grating ◽  
Strain Sensing ◽  
Center Wavelength ◽  
Repeatability Error ◽  
Sensor Module ◽  
Tension Sensor

Snow and ice disasters on power system safe and reliable operation of the transmission line has a great threaten.An overhead conductor tension sensor based on fiber Bragg grating is developed.The sensor contains a strain sensor module and a temperature compensation module which can offer temperature compensation for strain sensing module.The sensor connected to the tower and the insulator with metallic clamps.If there is ice on the transmission line,the tension of the sensor sensing module of the center wavelength will corresponding change,and the ice condition of the transmission wires can be reflected by the center wavelength variation.Experiment indicates that the tension sensitivity coefficient of the sensor is 9.8 pm/kN,the repeatability error is 1.78% FS,the nonlinear error is2.4% FS, the hysteresis is 1.5% FS.

Application of Fiber Bragg Grating Device in Icing Monitoring System of Transmission Lines

2014 ◽  
Vol 543-547 ◽  
pp. 1030-1034 ◽  
Author(s):  
Feng Lian Liu ◽  
Li Rui Guo ◽  
Yuan Shi Deng ◽  
Chi Wu ◽  
Jiang Ling Li ◽  
...  
Keyword(s):  
Transmission Line ◽  
Fiber Bragg Grating ◽  
Transmission Lines ◽  
Electromagnetic Interference ◽  
Bragg Grating ◽  
Stable Operation ◽  
Monitoring Device ◽  
Active Sensors ◽  
Bragg Grating Sensor ◽  
Monitoring Devices

Ice accretion has been a huge threat for the stable operation of transmission line. Icing monitoring devices used presently are active sensors with low working stability. Signals are transmitted in the electrical form, which are easily affected by the electromagnetic interference. In this paper, an online icing monitoring device of transmission line based on fiber bragg grating (FBG) sensor is designed, and is operated as a pilot unit on the 44# tower of 110kV Zhenzou line. Experimental results show that the online icing monitoring device operates stably, and the designed fiber bragg grating sensor has high linearity, good sensitivity and high accuracy.

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