倾斜(摄像机)
倾斜感应器
光纤布拉格光栅
校准
补偿(心理学)
材料科学
光学
数学
物理
光纤
几何学
心理学
精神分析
统计
作者
Muhammad Syamil Mohd Sa’ad,Harith Ahmad,Mohamad Ashraff Alias,Muhammad Khairol Annuar Zaini,Kok-Sing Lim,Sulaiman Wadi Harun,Kenneth T. V. Grattan,B. M. A. Rahman,Gilberto Brambilla,Siti Aisyah Reduan,Leonard Bayang,M. F. Ismail
出处
期刊:IEEE Sensors Journal
[Institute of Electrical and Electronics Engineers]
日期:2023-06-15
卷期号:23 (12): 12828-12837
被引量:4
标识
DOI:10.1109/jsen.2023.3268649
摘要
A surface-mounted tilt sensor was designed and fabricated to measure the inclination angle of engineered structures or slopes in two directions. The device utilizes two strain-sensitive fiber Bragg gratings (FBGs) for tilt angle measurement bidirectionally and one strain-free FBG to provide temperature compensation. In this work, a tilt sensor prototype was fabricated using a 3-D printer, with a robust enclosure and a miniature actuator with dimensions of $115\times 65\times30$ mm and $45\times 20\times $ 3 mm, respectively. The device was first calibrated in the laboratory for tilt and temperature parameters. For tilt calibration, the device yields a sensitivity value of 0.0135 and 0.0123 nm/° for + x- and– ${x}$ -directions. On the other hand, the device delivers a sensitivity value of 0.0105 nm/°C as the response to temperature changes. The tilt sensor was also tested for suitability in a real-field deployment where it was installed on a retaining wall and was left for four weeks. The field test data indicate no vertical displacement of the wall since the device exhibits zero inclination changes during the test period. This compact, robust, and easy-to-install tilt sensor has excellent potential for various geotechnical applications, mainly in landslide detections, ground movement, and engineered slope monitoring.
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