Research on Temperature Compensation of the Fiber Bragg Grating Sensor and the Resistance Strain Gauge

2021 ◽  
Vol 16 (6) ◽  
pp. 1020-1027
Author(s):  
Feng Zhu ◽  
Min Liu ◽  
Chengjun Xu ◽  
Sheng Zou ◽  
Chentong Chen ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Strain Gauge ◽  
Temperature Compensation ◽  
Metal Structure ◽  
Resistance Strain ◽  
Fiber Bragg Grating Sensor ◽  
Bragg Grating ◽  
Resistance Strain Gauge ◽  
Strain Monitoring ◽  
Bragg Grating Sensor

The fiber Bragg grating sensor is widely used in strain monitoring of large metal structure and trend to replace the resistance strain gauge due to its advantages of strong stability, high measurement accuracy, multiple points measuring, strong environmental suitability and long transmission distance. The temperature-induced strain, which can have the same order of magnitudes as the mechanically-induced strain, will cause great errors in the strain monitoring. Therefore, the temperature compensation for the sensors is essential to guarantee the measurement accuracy. The existing theoretical models and experiment platforms for analyzing the temperature compensation are established by assuming that the testing temperature is constant. However, the surrounding temperature of some large metal structure is not stable, and the effect of temperature change cannot be neglected. This paper aims to establish an analytic model and an experiment platform to compare the temperature compensation of the fiber bragg grating sensor and the resistance strain gauge. The superiority of the temperature compensation for the fiber bragg grating sensor is verified. The result provides theoretical support for choosing the fiber bragg grating sensor in the long-time strain monitoring.

A Comparison of Fiber Bragg Grating Sensor and Resistance Strain Gauge for Vibration Detection

2012 ◽  
Vol 10 (7) ◽  
pp. 1548-1551 ◽  
Author(s):  
Huaping Gong ◽  
Xiaorui Li ◽  
Yumeng Tu ◽  
Xinyong Dong
Keyword(s):  
Fiber Bragg Grating ◽  
Strain Gauge ◽  
Resistance Strain ◽  
Fiber Bragg Grating Sensor ◽  
Bragg Grating ◽  
Resistance Strain Gauge ◽  
Vibration Detection ◽  
Bragg Grating Sensor

Optical fiber Bragg grating sensor assembly for 3D strain monitoring and its case study in highway pavement

2012 ◽  
Vol 28 ◽  
pp. 36-49 ◽  
Author(s):  
Zhi Zhou ◽  
Wanqiu Liu ◽  
Ying Huang ◽  
Huaping Wang ◽  
He Jianping ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Fiber Bragg Grating Sensor ◽  
Bragg Grating ◽  
Strain Monitoring ◽  
Bragg Grating Sensor ◽  
Sensor Assembly ◽  
Optical Fiber Bragg Grating ◽  
Highway Pavement

Comparison Analysis of Fiber Bragg Grating and Resistance Strain Gauge Used in Quayside Container Crane Structural Health Monitoring

2013 ◽  
Vol 330 ◽  
pp. 485-493 ◽  
Author(s):  
Xiang Dong Li ◽  
Shi Lin Li ◽  
Shao Long Zhong ◽  
Sen Ge
Keyword(s):  
Structural Health Monitoring ◽  
Fiber Bragg Grating ◽  
Health Monitoring ◽  
Strain Gauge ◽  
Resistance Strain ◽  
Bragg Grating ◽  
Structural Health ◽  
Resistance Strain Gauge ◽  
Container Crane ◽  
Quayside Container Crane

Fiber Bragg grating and resistance strain gauge have been used to test the stress change in key parts of structure of 61t-55m quayside container crane under the same testing conditions. The testing data and stress-time history diagrams obtained by the resistance strain gauge and fiber Bragg grating have been analyzed. The results verify good real-time property and high reliability of the structural health monitoring system based on fiber Bragg grating system.

Strain monitoring of a smart bridge using a fiber Bragg grating sensor system with a wavelength-swept fiber laser

2000 ◽  
Author(s):  
Chang-Sun Hong ◽  
Chi-Young Ryu ◽  
Bon-Yono Koo ◽  
Chun-Gon Kim ◽  
Seok-Hyun Yun
Keyword(s):  
Fiber Laser ◽  
Fiber Bragg Grating ◽  
Fiber Bragg Grating Sensor ◽  
Sensor System ◽  
Bragg Grating ◽  
Strain Monitoring ◽  
Bragg Grating Sensor

Strain monitoring of smart composite structures using fiber Bragg grating sensor system

2001 ◽  
Author(s):  
Chun-Gon Kim ◽  
Chi-Young Ryu ◽  
Chang-Sun Hong ◽  
Hyun-Kyu Kang
Keyword(s):  
Fiber Bragg Grating ◽  
Composite Structures ◽  
Fiber Bragg Grating Sensor ◽  
Sensor System ◽  
Bragg Grating ◽  
Smart Composite ◽  
Strain Monitoring ◽  
Smart Composite Structures ◽  
Bragg Grating Sensor

A temperature-compensated fiber Bragg grating sensor system based on digital filtering for monitoring the pantograph–catenary contact force

2018 ◽  
Vol 233 (2) ◽  
pp. 187-200 ◽  
Author(s):  
Mengying Tan ◽  
Ning Zhou ◽  
Yao Cheng ◽  
Jiangwen Wang ◽  
Weihua Zhang ◽  
...  
Keyword(s):  
Frequency Domain ◽  
Fiber Bragg Grating ◽  
Contact Force ◽  
Frequency Band ◽  
Temperature Compensation ◽  
Digital Filtering ◽  
Fiber Bragg Grating Sensor ◽  
Bragg Grating ◽  
The Real ◽  
Bragg Grating Sensor

Optical sensors based on fiber Bragg gratings have become an important type of sensing element for strain measurements. In this study, fiber Bragg grating strain sensors and corresponding reference temperature sensors were integrated into a pantograph strip. The results of an online test indicated that the temperature of the pantograph strip impacting the strain measurement reaches about 80  ℃ while the vehicle was running. In addition, Fourier analysis showed that the energies of the temperature measurement signals dominated the relatively low-frequency band (less than 0.02 Hz), whereas the strain signals prevailed in the relatively high-frequency band. Thus, a novel method based on a digital filtering technique was proposed for temperature compensation in fiber Bragg grating sensor systems for monitoring the conditions in electrified pantograph–catenary systems. A Butterworth high-pass filter was designed to reject the temperature-related signal component with a stopband and to capture the real strain in the passband in frequency domain. To achieve this filtering, the cutoff frequencies and the filter order were calculated adaptively according to the frequency-domain characteristics of the measured temperature signal. With the designed filter, the temperature effect to the strain signals can be eliminated so that the strain can be estimated accurately. In comparison with the traditional temperature compensation technique, the proposed method is more effective in terms of estimating the real strain of the pantograph strip in practical applications. Compensated by the proposed method, the time-domain and frequency-domain analyses of the contact force denote the frequencies corresponding to the support span, and the dropper can be distinguished. Further, the first-order (4 Hz) and second-order (8.3 Hz) natural frequencies of the pantograph are visible in the measurements from catenary sections, which demonstrates the sufficiency and rationality of the proposed temperature compensation method for fiber Bragg grating sensor systems.

Strain monitoring of dual-room box-girder during prestressing tension based on fiber Bragg grating sensor

2012 ◽  
Author(s):  
Dansheng Wang ◽  
Tao Jin ◽  
Hongping Zhu ◽  
Weiping He ◽  
Ming Li
Keyword(s):  
Fiber Bragg Grating ◽  
Fiber Bragg Grating Sensor ◽  
Bragg Grating ◽  
Box Girder ◽  
Strain Monitoring ◽  
Bragg Grating Sensor
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