Simultaneous measurement of curvature and temperature for LPG bending sensor

Chi Chiu Chan; Khay Ming Tan; Chia Meng Tay; Swee Chuan Tjin

doi:10.1117/12.571324

8 December 2004 Simultaneous measurement of curvature and temperature for LPG bending sensor

Chi Chiu Chan, Khay Ming Tan, Chia Meng Tay, Swee Chuan Tjin

Proceedings Volume 5590, Sensors for Harsh Environments; (2004) https://doi.org/10.1117/12.571324
Event: Optics East, 2004, Philadelphia, Pennsylvania, United States

Abstract

For an embedded LPG bending sensor, in which the its resonance coupling strength changes with bending curvature, cross-talk issues between temperature and bending curvature arises if it is to be deployed in non-controlled environments. A 2 x 2 matrix method was thus employed for simultaneous measurement of bending curvature and temperature for the embedded LPG bending sensor. The matrix is made up of bending and temperature coefficients from 2 different fiber-types LPG; one is H2-loaded and the other is Bo/Ge co-doped. To find out the percentage error, a random test has to be carried out and the matrix was deployed for calculation. From the test results, the percentage error achieved for curvature measurement yields less than 6%. For temperature measurement, the percentage error fluctuates between 1.56% and 5.4%. The use of simultaneous measurement of both bending curvature and temperature enables researchers and engineers to measure bending of structures more accurately.

Citation Download Citation

Chi Chiu Chan, Khay Ming Tan, Chia Meng Tay, and Swee Chuan Tjin "Simultaneous measurement of curvature and temperature for LPG bending sensor", Proc. SPIE 5590, Sensors for Harsh Environments, (8 December 2004); https://doi.org/10.1117/12.571324

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