Research on Dual Bellows FBG Pressure Sensor

Abstract:

A metalized FBG pressure sensor encapsulated by dual bellows structure was designed based on the strain characteristics of optical fiber Bragg grating (FBG) and osmotic sensing principle. And the experimental system of dual bellows FBG pressure sensor is established. The experimental results show that the pressure sensitivity coefficient of dual bellows FBG pressure sensor is 184.98nm/MPa with the measuring range 10 kPa. The correlation coefficient is better than 99.9% and the resolution is up to 0.05% full scale (FS). The sensitivity of dual bellows structure is high, which indicate that the dual bellows structure encapsulation is suitable for the sensoring in small measuring range.

• Periodical: Applied Mechanics and Materials (Volumes 336-338)
• Pages: 239-243
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.336-338.239
• Online since: July 2013
• Authors: Wen Long Yang, Yan Ling Xiong, Qiao Yi Li, Xue Ming Jin, Li Wang
• Keywords: Dual Bellows, Finite Element Analysis (FEA), Optical Fiber Bragg Grating, Pressure Sensor

References

[1] Jun Li, Jin Wu, and Junqi Gao, In: Optical fiber grating corrosion sensor used for concrete structure, volume, 29, chapter, 2, Journal of Chinese Society for Corrosion and Protection(2009), pp.109-112.

[2] Daiying Chen, Dequ Mo, In: Research on fiber bragg grating pressure sensor, volume, 34, chapter, 3, Beijing university of chemical technology(2007), pp.318-320.

[3] Rui Teng. In: Research on surface metallization of optical fiber grating, volume, 2, chapter, 40, Journal of Dalian university of technology(2008)., pp.192-196.

[4] Xiaohui Liu, Chang Wang, Tongyu Liu, Yubin Wei, In: Optical fiber grating water pressure sensor and system, volume, 38, chapter, 1, Acta Photonica Sinica(2009), p.112.

[5] Bo Liu, In: High sensitivity optical fiber Bragg grating pressure sensor, volume, 7, chapter, 36, Journal of Wuhan university of technology(2010), pp.23-30.