{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T11:44:54Z","timestamp":1792496694416,"version":"4.5.0"},"reference-count":20,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2015,4,13]],"date-time":"2015-04-13T00:00:00Z","timestamp":1428883200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Bridge displacement is the most basic evaluation index of the health status of a bridge structure. The existing measurement methods for bridge displacement basically fail to realize long-term and real-time dynamic monitoring of bridge structures, because of the low degree of automation and the insufficient precision, causing bottlenecks and restriction. To solve this problem, we proposed a bridge displacement monitoring system based on laser projection-sensing technology. First, the laser spot recognition method was studied. Second, the software for the displacement monitoring system was developed. Finally, a series of experiments using this system were conducted, and the results show that such a system has high measurement accuracy and speed. We aim to develop a low-cost, high-accuracy and  long-term monitoring method for bridge displacement based on these preliminary efforts.<\/jats:p>","DOI":"10.3390\/s150408444","type":"journal-article","created":{"date-parts":[[2015,4,14]],"date-time":"2015-04-14T03:11:46Z","timestamp":1428981106000},"page":"8444-8463","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":73,"title":["Bridge Displacement Monitoring Method Based on Laser Projection-Sensing Technology"],"prefix":"10.3390","volume":"15","author":[{"given":"Xuefeng","family":"Zhao","sequence":"first","affiliation":[{"name":"State Key Laboratory of Coastal and Offshore Engineering, School of Civil Engineering,  Dalian University of Technology, Dalian 116000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hao","family":"Liu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Coastal and Offshore Engineering, School of Civil Engineering,  Dalian University of Technology, Dalian 116000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yan","family":"Yu","sequence":"additional","affiliation":[{"name":"School of Electronic Science and Technique, Dalian University of Technology, Dalian 116000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaodong","family":"Xu","sequence":"additional","affiliation":[{"name":"School of Software Technology, Dalian University of Technology, Dalian 116000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weitong","family":"Hu","sequence":"additional","affiliation":[{"name":"School of Software Technology, Dalian University of Technology, Dalian 116000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mingchu","family":"Li","sequence":"additional","affiliation":[{"name":"School of Software Technology, Dalian University of Technology, Dalian 116000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jingping","family":"Ou","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Coastal and Offshore Engineering, School of Civil Engineering,  Dalian University of Technology, Dalian 116000, China"},{"name":"School of Civil Engineering, Harbin Institute of Technology, Harbin 150000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2015,4,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1820","DOI":"10.1016\/j.engstruct.2005.05.013","article-title":"Prediction of vertical deflections for a long-span prestressed concrete bridge structure","volume":"27","author":"Robertson","year":"2005","journal-title":"Eng. 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