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Journal of Sensors
Volume 2016, Article ID 8152651, 11 pages
Research Article

A Standalone Vision Sensing System for Pseudodynamic Testing of Tuned Liquid Column Dampers

Department of Architectural Engineering, Dankook University, Jukjeon-dong, Suji-gu, Yongin-si, Gyeonggi-do 448-701, Republic of Korea

Received 30 December 2015; Revised 21 March 2016; Accepted 27 March 2016

Academic Editor: Xiao-Wei Ye

Copyright © 2016 Kyung-Won Min et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Experimental investigation of the tuned liquid column damper (TLCD) is a primal factory task prior to its installation at a site and is mainly undertaken by a pseudodynamic test. In this study, a noncontact standalone vision sensing system is developed to replace a series of the conventional sensors installed at the TLCD tested. The fast vision sensing system is based on binary pixel counting of the portion of images steamed in a pseudodynamic test and achieves near real-time measurements of wave height, lateral motion, and control force of the TLCD. The versatile measurements of the system are theoretically and experimentally evaluated through a wide range of lab scale dynamic tests.