Modified cantilever beam shaped FBG based accelerometer with self temperature compensation

Khan, Mohd Mansoor; Panwar, Nishtha; Dhawan, Ravi

doi:10.1016/j.sna.2013.10.027

Cited by 90 publications

(31 citation statements)

References 12 publications

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“…Khan et al 12 made improvement to the cross-section of a traditional cantilever accelerometer and used double grating for temperature compensation, which increased the adaptability of the cantilever accelerometer in a low-frequency environment. Compared with a cross-section cantilever beam structure, the structural coefficient of sensitivity of the latter is irrelevant to coordinate in longitudinal direction.…”

Section: Introductionmentioning

confidence: 99%

Design and experimental research on cantilever accelerometer based on fiber Bragg grating

Xiang

Jiang

et al. 2016

Opt. Eng

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Currently, an acceleration sensor based on fiber Bragg grating (FBG) has been widely used. A cantilever FBG accelerometer is designed. The simulation of this structure was implemented by finite element software (ANSYS) to analyze its sensing performance parameters. And then the optimized structure was produced and calibration experiments were conducted. On the basis of simulation, optical fiber is embedded in the inner tank of the vibrating mass, and Bragg grating is suspended above the cantilever structure, which can effectively avoid the phenomenon of center wavelength chirp or broadening, and greatly improve the sensitivity of the sensor. The experimental results show that the FBG accelerometer exhibits a sensitivity of 75 pm∕ðm∕s 2 Þ (100 Hz) and dynamic range of 60 dB. Its linearity error is <2.31% and repeatability error is <2.76%. And the resonant frequency is ∼125 Hz. The simulation results match the experimental results to demonstrate the good performance of FBG accelerometer, which is expected to be used in the actual project.

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Section: Introductionmentioning

confidence: 99%

Design and experimental research on cantilever accelerometer based on fiber Bragg grating

Xiang

Jiang

et al. 2016

Opt. Eng

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“…According to the principle of optical fiber accelerometers, there are four types of optical modulation, namely, wavelength modulation [8,9], phase modulation [7,10], polarization modulation [11] and intensity modulation [12,13], in which the intensity modulation based accelerometer is realized by micro-bend of fiber or micro-displacement of reflecting mirror. In the above accelerometers, however, the sensor structure and the demodulation system are usually complicated, which may lead to some problems in real application such as high cost, instability.…”

Section: Introductionmentioning

confidence: 99%

A simple intensity modulation based fiber-optic accelerometer

Yao

Yang

2016

Optical Fiber Technology

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“…So their sensitivity is limited by the cantilever structure. Though some designed the new elastomer structure to improve vibration sensor's sensitivity, it's very complex operations and maybe make the dynamic properties of sensor change [11,12].…”

Section: Introductionmentioning

confidence: 99%

Research on pasted FBG-based accelerometer’s sensitization process method and its characteristics

Tan

Zhou

et al. 2015

IEICE Electron. Express

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A pasted FBG based cantilever beam accelerometer's sensitization process method has been proposed in this paper. We have built the pasted FBG-based cantilever beam accelerometer's sensitization process model. The sensor's sensitivity was improved by adjusting glue thickness between FBG and cantilever beam. Theoretical model has been proved by ANSYS simulation and experimental analysis: Simulation analysis shows that when distance between fiber core and cantilever beam is greater than 0.4 mm, it can be used to enhance sensitivity. Experimental analysis shows that when distance between fiber core and cantilever beam is 1 mm, sensitivity of sensor is increased by 2.9 times compared with the conventional process, but it has no effect on the sensor dynamic characteristics. Compared with conventional sensitization method, it's more general, and can be applied to all pasted FBG accelerometer for enhancing sensitivity.

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Modified cantilever beam shaped FBG based accelerometer with self temperature compensation

Cited by 90 publications

References 12 publications

Design and experimental research on cantilever accelerometer based on fiber Bragg grating

Design and experimental research on cantilever accelerometer based on fiber Bragg grating

A simple intensity modulation based fiber-optic accelerometer

Research on pasted FBG-based accelerometer’s sensitization process method and its characteristics

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