Paper Info
Title
New Fiber Bragg Grating Three-Dimensional Accelerometer Based On Composite Flexure Hinges
Abstract
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 x 25 mm x 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.
Year
DOI
Venue
2021
10.3390/s21144715
SENSORS
Keywords
DocType
Volume
three-dimensional accelerometer, fiber bragg grating, flexure hinges, dynamic response
Journal
21
Issue
ISSN
Citations 
14
1424-8220
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Hui Wang100.68
Lei Liang221.62
Xiongbing Zhou300.34
Bin Tu400.34