{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,1]],"date-time":"2026-02-01T05:34:25Z","timestamp":1769924065883,"version":"3.49.0"},"reference-count":20,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2017,1,22]],"date-time":"2017-01-22T00:00:00Z","timestamp":1485043200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["61475121"],"award-info":[{"award-number":["61475121"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>To meet the requirements for low-frequency vibration monitoring, a new type of FBG (fiber Bragg grating) accelerometer with a bended spring plate is proposed. Two symmetrical bended spring plates are used as elastic elements, which drive the FBG to produce axial strains equal in magnitude but opposite in direction when exciting vibrations exist, leading to doubling the wavelength shift of the FBG. The mechanics model and a numerical method are presented in this paper, with which the influence of the structural parameters on the sensitivity and the eigenfrequency are discussed. The test results show that the sensitivity of the accelerometer is more than 1000 pm\/g when the frequency is within the 0.7\u201320 Hz range.<\/jats:p>","DOI":"10.3390\/s17010206","type":"journal-article","created":{"date-parts":[[2017,1,23]],"date-time":"2017-01-23T10:40:33Z","timestamp":1485168033000},"page":"206","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":43,"title":["A Low Frequency FBG Accelerometer with Symmetrical Bended Spring Plates"],"prefix":"10.3390","volume":"17","author":[{"given":"Fufei","family":"Liu","sequence":"first","affiliation":[{"name":"National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Luoshi Road 122, 430070 Wuhan, China"}]},{"given":"Yutang","family":"Dai","sequence":"additional","affiliation":[{"name":"National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Luoshi Road 122, 430070 Wuhan, China"}]},{"given":"Joseph","family":"Karanja","sequence":"additional","affiliation":[{"name":"Physics Department, Pwani University, P.O. Box 195-80108 Kilifi, Kenya"}]},{"given":"Minghong","family":"Yang","sequence":"additional","affiliation":[{"name":"National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Luoshi Road 122, 430070 Wuhan, China"}]}],"member":"1968","published-online":{"date-parts":[[2017,1,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"41","DOI":"10.1016\/j.sna.2012.05.014","article-title":"Novel piezoresistive high-g accelerometer geometry with very high sensitivity-bandwidth product","volume":"182","author":"Kuells","year":"2012","journal-title":"Sens. Actuators A Phys."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"108","DOI":"10.1061\/(ASCE)0893-1321(2003)16:3(108)","article-title":"Design of piezoresistive MEMS-based accelerometer for integration with wireless sensing unit for structural monitoring","volume":"16","author":"Lynch","year":"2003","journal-title":"J. Aerosp. 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