Proceedings ArticleDOI
Health monitoring of civil infrastructures using wireless sensor networks
Sukun Kim,Shamim N. Pakzad,David E. Culler,James Demmel,Gregory L. Fenves,Steven D. Glaser,Turon Martin A +6 more
- Vol. 6, pp 254-263
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TLDR
A Wireless Sensor Network for Structural Health Monitoring is designed, implemented, deployed and tested on the 4200 ft long main span and the south tower of the Golden Gate Bridge and the collected data agrees with theoretical models and previous studies of the bridge.Abstract:
A Wireless Sensor Network (WSN) for Structural Health Monitoring (SHM) is designed, implemented, deployed and tested on the 4200 ft long main span and the south tower of the Golden Gate Bridge (GGB). Ambient structural vibrations are reliably measured at a low cost and without interfering with the operation of the bridge. Requirements that SHM imposes on WSN are identified and new solutions to meet these requirements are proposed and implemented. In the GGB deployment, 64 nodes are distributed over the main span and the tower, collecting ambient vibrations synchronously at 1 kHz rate, with less than 10 mus jitter, and with an accuracy of 30 muG. The sampled data is collected reliably over a 46-hop network, with a bandwidth of 441 B/s at the 46th hop. The collected data agrees with theoretical models and previous studies of the bridge. The deployment is the largest WSN for SHM.read more
Citations
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Journal ArticleDOI
Focal-Plane Sensing-Processing: A Power-Efficient Approach for the Implementation of Privacy-Aware Networked Visual Sensors
Jorge Fernández-Berni,Ricardo Carmona-Galan,Rocío del Río,Richard Kleihorst,Wilfried Philips,Ángel Rodríguez-Vázquez +5 more
TL;DR: A hardware-based strategy to concurrently address privacy protection measures and power consumption is described, using a full-custom QVGA vision sensor chip incorporating a mixed-signal focal-plane sensing-processing array providing programmable pixelation of multiple image regions in parallel.
Proceedings ArticleDOI
Improving Link Quality by Exploiting Channel Diversity in Wireless Sensor Networks
TL;DR: This paper proposes a new approach to exploit intermediate quality (IQ) links through channel diversity with a new protocol, called IQ Link Transformation Protocol (ILTP), that does not require overhearing, and transforms IQ links into good links thus allowing us to exploit such links continuously rather than using them only opportunistically.
Journal ArticleDOI
Medium access controlfacing the reality of WSN deployments
TL;DR: Although research on algorithms and communication protocols in Wireless Sensor Networks has yielded a tremendous effort so far, most of these protocols are hardly used in real deployments nowadays, and this trend is investigated from a Medium Access Control (MAC) perspective.
Proceedings ArticleDOI
Toward integrating Structural Health Monitoring with Internet of Things (IoT)
TL;DR: A mathematical model is proposed to detect the size and location of damages in physical structures using piezoelectric sensor that combines both pitch-catch and pulse-echo techniques, and has been verified through out simulations using ABAQUS/Explicit finite element software.
Journal ArticleDOI
A novel iterative identification based on the optimised topology for common state monitoring in wireless sensor networks
TL;DR: An iterative identification method is proposed to minimise the information capacity by transmitting the processed results instead of raw data to reduce the data amount for calculation and storage in the practical use of WSN.
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