Triaxial Bragg grating accelerometer

Morikawa, S. R. K.; Ribeiro, Alexandre S.; Regazzi, R.D.; Valente, L.C.G.; Braga, Arthur M. B.

doi:10.1109/ofs.2002.1000510

Cited by 27 publications

(23 citation statements)

References 10 publications

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“…W ITH the intrinsic advantages such as frequency modulation and ease of multiplexing, FBG accelerometers have been intensively researched [1]- [8]. Multi-axial force measurement would normally require orthogonally placing sensing elements in all the axes.…”

Section: Introductionmentioning

confidence: 99%

Biaxial Fiber Bragg Grating Accelerometer Using Axial and Transverse Forces

Chan

Yau

et al. 2014

IEEE Photon. Technol. Lett.

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We demonstrate the first biaxial fiber Bragg grating (FBG) accelerometer using axial and transverse forces. An inertial object is fixed at the middle of two FBGs inscribed in one fiber. The difference between the resonant wavelengths of the two FBGs can distinguish the acceleration in the axial direction, while being insensitive in the transverse direction. The average of the resonant wavelengths of the two FBGs can distinguish the acceleration in the transverse direction, while being insensitive in the axial direction. In the experiments, when the transverse direction was vertical, the crest-to-trough sensitivity at 5 Hz and resonant frequency of the average were 0.545 nm/g and 34.42 Hz, respectively. When the axial direction was vertical, those of the difference were 0.0454 nm/g and 900 Hz, respectively. For each FBG, the crest-to-trough sensitivity at 5 Hz and resonant frequency in the transverse/vertical direction were 24 and 1/26 times those in the axial/vertical direction, respectively.

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Section: Introductionmentioning

confidence: 99%

Biaxial Fiber Bragg Grating Accelerometer Using Axial and Transverse Forces

Chan

Yau

et al. 2014

IEEE Photon. Technol. Lett.

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“…In the last two decades, fiber Bragg gratings (FBGs) are attractive in sensing areas due to their various advantages over traditional electrical sensors, such as electrically free operation, immunity to radio frequency interference (RFI) and electromagnetic interference (EMI), high sensitivity, compact size, self-referencing and multiplexing capabilities. The responses of FBGs to the applied strain have facilitated various transducer designs that can deal with many measurands such as acceleration [3][4][5], displacement [6], pressure [7], force [8], flow [9], ultrasound [10], torsion [11], etc. Several FBG-based tilt sensors for one or two-dimensional (1-D or 2-D) tilt measurements have been reported in recent years [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Temperature-insensitive 2-D tilt sensor by incorporating fiber Bragg gratings with a hybrid pendulum

Bao

Dong

Shao

et al. 2010

Optics Communications

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“…Besides, the intrinsic wavelength encoding gives the FBG sensors a multiplexing capability that greatly reduces cabling labor. Because of these intrinsic natures, FBG sensors have great potential to be applied to measurands of static and dynamic, such as temperature [1], pressure [2][3][4] and vibration [5][6][7][8][9][10]. FBG vibration sensors are extremely attractive in many industrial fields, such as mine safety monitoring, aerocraft and civil construction.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, this sensor is cost-effective and inherently insensitive to temperature. [5][6][7][8][9][10]. FBG vibration sensors are extremely attractive in many industrial fields, such as mine safety monitoring, aerocraft and civil construction.…”

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confidence: 99%

Intensity-modulated and temperature-insensitive fiber Bragg grating vibration sensor

Dong

Zhang

et al. 2010

SPIE Proceedings

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Abstract. An intensity-modulated, fiber Bragg grating (FBG) vibration sensor is proposed and experimentally demonstrated. An initially-uniform FBG is glued with a slanted direction onto the lateral surface of a simply-supported beam (SSB). A mass fixed in the middle of the beam transfers the vertical vibration to the deflection of the beam. Nouniform strain field generated by beam bending is applied along the FBG and makes it chirped. The sensing mechanism is based on the measurement of reflected optical power of a strain-chirped FBG. The optical power from the FBG is measured with a photodetector (PD) and an oscilloscope. A resistance strain gauge is used for the comparison purpose and good agreement is achieved. Furthermore, this sensor is cost-effective and inherently insensitive to temperature. [5][6][7][8][9][10]. FBG vibration sensors are extremely attractive in many industrial fields, such as mine safety monitoring, aerocraft and civil construction. Most of previously reported FBG-based vibration sensors are based on the measurement of Bragg wavelength shift of the sensing FBGs. But the FBG sensors based on wavelength demodulation have to monitor the reflection wavelength of FBG, so expensive wavelength measurement instrument are normally used. The measurement speed of wavelength measurement instrument is relatively low. On the other hand, Bragg wavelength shift of the sensing FBGs are also sensitive to temperature. Thus temperature compensation is needed when these reported vibration sensors are used in practical applications. That will add to the cost and complexity of the sensor system.

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Triaxial Bragg grating accelerometer

Cited by 27 publications

References 10 publications

Biaxial Fiber Bragg Grating Accelerometer Using Axial and Transverse Forces

Biaxial Fiber Bragg Grating Accelerometer Using Axial and Transverse Forces

Temperature-insensitive 2-D tilt sensor by incorporating fiber Bragg gratings with a hybrid pendulum

Intensity-modulated and temperature-insensitive fiber Bragg grating vibration sensor

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