Open AccessMultiscale Acceleration-Dynamic Strain-Impedance Sensor System for Structural Health Monitoring
Author(s) -
Duc-Duy Ho,
Khac-Duy Nguyen,
Han-Sam Yoon,
JeongTae Kim
Publication year - 2012
Publication title -
international journal of distributed sensor networks
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.324
H-Index - 53
eISSN - 1550-1477
pISSN - 1550-1329
DOI - 10.1155/2012/709208
Subject(s) - computer science , wireless sensor network , structural health monitoring , microcontroller , sensor node , acceleration , node (physics) , real time computing , electrical impedance , power (physics) , vibration , embedded system , key distribution in wireless sensor networks , wireless , electrical engineering , wireless network , telecommunications , acoustics , computer network , engineering , physics , classical mechanics , quantum mechanics
A multiscale wireless sensor system is designed for vibration- and impedance-based structural health monitoring. In order to achieve the objective, the following approaches are implemented. Firstly, smart sensor nodes for vibration and impedance monitoring are designed. In the design, Imote2 platform which has high performance microcontroller, large amount of memory, and flexible radio communication is implemented to acceleration and impedance sensor nodes. Acceleration sensor node is modified to measure PZT's dynamic strain along with acceleration. A solar-power harvesting unit is implemented for power supply to the sensor system. Secondly, operation logics of the multi-scale sensor nodes are programmed based on the concept of the decentralized sensor network. Finally, the performance of the multi-scale sensor system is evaluated on a lab-scale beam to examine the long-term monitoring capacities under various weather conditions.
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