Fiber Bragg Grating based two-dimensional Accelerometer

Umesh, Sharath; Kumar, Resmi Ravi; Pant, Shweta; Asokan, S.

doi:10.1109/smartsens.2015.7873608

Cited by 6 publications

(1 citation statement)

References 9 publications

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“…The sensitivity of this sensor design is 220 pm/g and the natural frequency is 814.3 Hz, with an interference between the two axes of only 4%. Umesh et al [ 11 ] developed a design in which two cantilevered FBG accelerometers are fixed to a large mass block. When multi-dimensional vibrations occur, the two mass blocks vibrate separately to produce acceleration measurements in two dimensions.…”

Section: Introductionmentioning

confidence: 99%

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

Wang

Liang

Zhou

et al. 2021

Sensors

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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.

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Section: Introductionmentioning

confidence: 99%