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Vision‐based vibration monitoring using existing cameras installed within a building
Author(s) -
Harvey P. Scott,
Elisha Guy
Publication year - 2018
Publication title -
structural control and health monitoring
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.587
H-Index - 62
eISSN - 1545-2263
pISSN - 1545-2255
DOI - 10.1002/stc.2235
Subject(s) - earthquake shaking table , vibration , engineering , shake , scale (ratio) , structural health monitoring , building model , computer science , real time computing , structural engineering , simulation , acoustics , physics , mechanical engineering , quantum mechanics
Summary A new methodology for the monitoring of dynamic characteristics of buildings has been proposed. It is based on digital image analysis leveraging pre‐existing cameras installed within a building, such as surveillance cameras. The method is used for real‐time measurement of interstory drifts, from which dynamic characteristics (e.g., fundamental period) can easily be extracted to detect damage to the structural system. It has applications particularly in the case of post‐earthquake damage estimation and when the installation of traditional sensors and monitoring systems is cost prohibitive. The methodology is demonstrated through both lab‐scale and full‐scale shake table tests.