scholarly journals New Fiber Bragg Grating Three-Dimensional Accelerometer Based on Composite Flexure Hinges

Sensors ◽  
2021 ◽  
Vol 21 (14) ◽  
pp. 4715
Author(s):  
Hui Wang ◽  
Lei Liang ◽  
Xiongbing Zhou ◽  
Bin Tu
Keyword(s):  
Fiber Bragg Grating ◽  
Structural Parameters ◽  
Three Dimensional ◽  
Performance Testing ◽  
Bragg Grating ◽  
Coupling Mechanism ◽  
Acceleration Sensor ◽  
Performance Volume ◽  
Resonance Frequencies ◽  
Acceleration Sensors

Multi-dimensional acceleration sensors are used in important applications in the aerospace, weapon equipment, and nuclear fields and have strict requirements in terms of performance, volume, and mass. Fiber Bragg grating acceleration sensors use optical wavelength signals as a medium for information transmission to effectively eliminate the influence of electromagnetic interference between multi-dimensional sensors. In this study, we designed a composite flexure hinge three-dimensional acceleration sensor. To this end, we investigated the coupling mechanism between a new integrated elastomer structure and fiber grating to determine the influence of structural parameters on the static and dynamic characteristics, volume, and mass of the sensor. By optimizing the strain distribution, amplitude, and frequency and coupling characteristics between dynamic dimensions, a design theory and a method for integrating the three-dimensional acceleration sensor were developed. The size of the optimized accelerometer is only 25 mm × 25 mm × 30 mm. Performance testing revealed that, along the three spatial dimensions, the sensor had sensitivities of 51.9, 39.5, and 20.3 pm/g, respectively, resonance frequencies of 800, 1125, and 1750 Hz, respectively, and a measurable frequency range of 0–250 Hz. 

A Fiber Bragg Grating acceleration sensor with temperature compensation

Optik ◽  
2021 ◽  
pp. 166993
Author(s):  
Xianfeng Zhao ◽  
Zhen’an Jia ◽  
Wei Fan ◽  
Wangfei Liu ◽  
Hong Gao ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Temperature Compensation ◽  
Bragg Grating ◽  
Acceleration Sensor

scholarly journals Investigation of a Three-Dimensional Micro-Scale Sensing System Based on a Tapered Self-Assembly Four-Cores Fiber Bragg Grating Probe

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 2824 ◽  
Author(s):  
Kunpeng Feng ◽  
Jiwen Cui ◽  
Xun Sun ◽  
Hong Dang ◽  
Tangjun Shi ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Self Assembly ◽  
Three Dimensional ◽  
Critical Length ◽  
Bragg Grating ◽  
Manufacturing Method ◽  
Micro Scale ◽  
Sensing Model ◽  
Shift Point ◽  
Better Than

Three-dimensional micro-scale sensors are in high demand in the fields of metrology, precision manufacturing and industry inspection. To extend the minimum measurable dimension and enhance the accuracy, a tapered four-cores fiber Bragg grating (FBG) probe is proposed. The sensing model is built to investigate the micro-scale sensing characteristics of this method and the design of the tapered stylus is found to influence the accuracy. Therefore, a π/2 phase-shift point is introduced into the FBGs comprised in the probe to suppress spectrum distortion and improve accuracy. Then, the manufacturing method based on capillary self-assembly is proposed to form the probe and the critical length to form a square array for four cylindrical fibers is verified to be effective for the tapered fibers. Experimental results indicate that the design of the tapered stylus can extend the minimum measurable dimension by twofold and has nearly no influence on its sensitivity. The three-dimensional measurement repeatability is better than 31.1 nm and the stability is better than 200 nm within once measuring process. Furthermore, the measurement precision of the three-dimensional micro-scale measurement results is less than 150 nm. It would be widely used in measuring micro-scale features for industry inspection or metrology.

A fiber bragg grating acceleration sensor interrogated by a DFB laser diode

Laser Physics ◽  
2009 ◽  
Vol 19 (1) ◽  
pp. 134-137 ◽  
Author(s):  
J. Chang ◽  
Q. Wang ◽  
X. Zhang ◽  
D. Huo ◽  
L. Ma ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Laser Diode ◽  
Bragg Grating ◽  
Acceleration Sensor ◽  
Dfb Laser

A fiber Bragg grating acceleration sensor for ground surveillance

2017 ◽  
Author(s):  
Shaodong Jiang ◽  
Faxiang Zhang ◽  
Jingsheng Lv ◽  
Jiasheng Ni ◽  
Chang Wang
Keyword(s):  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Acceleration Sensor

scholarly journals Non-Destructive Three-Dimensional Optical Imaging of a Fiber Bragg Grating

2014 ◽  
Vol 6 (5) ◽  
pp. 1-7 ◽  
Author(s):  
Xiao Ming Goh ◽  
Shan Shan Kou ◽  
Betty P. Kouskousis ◽  
Nicoleta M. Dragomir ◽  
Stephen F. Collins ◽  
...  
Keyword(s):  
Optical Imaging ◽  
Fiber Bragg Grating ◽  
Three Dimensional ◽  
Bragg Grating ◽  
Non Destructive

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.

scholarly journals Use of Acceleration Sensors in Archery

Proceedings ◽  
2020 ◽  
Vol 49 (1) ◽  
pp. 98
Author(s):  
Markus Eckelt ◽  
Franziska Mally ◽  
Angelika Brunner
Keyword(s):  
Range Of Motion ◽  
Video Analysis ◽  
Coefficient Of Variation ◽  
Three Dimensional ◽  
Feedback System ◽  
Complex Data ◽  
Acceleration Sensor ◽  
Acceleration Sensors ◽  
Motion Sequence ◽  
Set Up

Archery is a quasi-static sport. Nevertheless, it requires maximum concentration, as well as precision from the archer. Previous research used combinations of several sensors, video analysis and electromyography to analyse the motion sequence and to identify parameters leading to a worse score. Therefore, the aim of this study is to verify if solely an acceleration sensor on the archer’s hand, without complex data processing, could be used to set up a feedback system. For testing, six participants with a three dimensional acceleration sensor on each hand shot indoors at a vertical triple target. The parameters analysed were the duration of the movement, the range of motion and the coefficient of variation. The results indicate that the analysis of the coefficient of variation shows no correlation with the score reached, whereas the analysis of the duration and the range of motion does.

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