Optical fiber Bragg grating-based pressure sensor for soil monitoring applications

被引：5

作者：

Sa'ad, Muhammad Syamil Mohd ^{[1
]}

Ahmad, Harith ^{[1
,2
,3
]}

Alias, Mohamad Ashraff ^{[1
]}

Zaini, Muhammad Khairol Annuar ^{[1
]}

Samion, Muhamad Zharif ^{[1
]}

Grattan, Kenneth T. V. ^{[4
]}

Rahman, B. M. Azizur ^{[4
]}

Brambilla, Gilberto ^{[5
]}

Sing, Lim Kok ^{[1
]}

Harun, Sulaiman Wadi ^{[6
]}

Bayang, Leonard ^{[1
]}

Reduan, Siti Aisyah ^{[1
]}

Thambiratnam, Kavintheran ^{[7
]}

Zulkifli, Mohd Zamani ^{[7
]}

Ismail, Mohammad Faizal ^{[1
]}

机构：

[1] Univ Malaya, Photon Res Ctr, Kuala Lumpur, Malaysia

[2] Univ Malaya, Fac Sci, Dept Phys, Kuala Lumpur, Malaysia

[3] Univ Kuala Lumpur, British Malaysian Inst UniKL BMI, Selangor, Malaysia

[4] City Univ London, Sch Math Comp Sci & Engn, London, England

[5] Univ Southampton, Optoelect Res Ctr, Southampton, England

[6] Univ Malaya, Fac Engn, Dept Elect Engn, Kuala Lumpur, Malaysia

[7] Int Islamic Univ Malaysia, IIUM Photon & Quantum Ctr, Kulliyyah Sci, Jalan Sultan Ahmad Shah, Bandar Indera Mahkota, Pahang Darul Ma, Malaysia

来源：

OPTICAL ENGINEERING | 2023年 / 62卷 / 08期

关键词：

fiber Bragg gratings; fiber Bragg grating sensors; ground movement; soil pressure; pressure sensor;

D O I：

10.1117/1.OE.62.8.086101

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An optical-based pressure sensor for a 150 x 150 mm surface was designed and fabricated. The sensor utilizes a fiber Bragg grating (FBG) attached to a 30 x 30 x 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.

引用

页数：16

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