Optical fiber Bragg grating-based pressure sensor for soil monitoring applications
Sa'ad, M. S. M., Ahmad, H., Alias, M. A. , Zaini, M. K. A., Samion, M. Z., Grattan, K. T. V. ORCID: 0000-0003-2250-3832, Rahman, B. M. ORCID: 0000-0001-6384-0961, Brambilla, G., Sing, L. K., Harun, S. W., Bayang, L., Reduan, S. A., Thambiratnam, K., Zulkifli, M. Z. & Ismail, M. F. (2023). Optical fiber Bragg grating-based pressure sensor for soil monitoring applications. Optical Engineering, 62(8), article number 086101. doi: 10.1117/1.OE.62.8.086101
Abstract
An optical-based pressure sensor for a 150 × 150 mm surface was designed and fabricated. The sensor utilizes a fiber Bragg grating (FBG) attached to a 30 × 30 × 30 mm actuator as the pressure sensing mechanism. The middle section of the actuator, which is circular, can bend into an elliptical form and, in the process, pull the FBGP via both ends when force or pressure is applied, thus converting the pressure applied to its surface into a wavelength shift. In laboratory testing, a sensitivity of 0.152 nm∕kPa was obtained. Subsequently, the pressure sensor was tested in the field by burying it 20 cm underground to measure soil pressure, while another FBG was spliced in series to the FBGP to compensate for temperature variations. Testing shows that the proposed design can realize a compact optical-based pressure sensor with enhanced soil monitoring applications such as dynamic soil pressure caused by soil movement.
Publication Type: | Article |
---|---|
Additional Information: | Copyright the authors, 2023 Society of Photo‑Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, and modification of the contents of the publication are prohibited. |
Publisher Keywords: | fiber Bragg gratings; fiber Bragg grating sensors; ground movement; soil pressure; pressure senso |
Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
Departments: | School of Science & Technology > Engineering |
SWORD Depositor: |
Download (8MB) | Preview
Export
Downloads
Downloads per month over past year