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A Wireless Sensor Network (WSN) for Structural Health Monitoring (SHM) is designed, implemented, deployed and tested on the 4200ft 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(More)
We present Flush, a reliable, high goodput bulk data transport protocol for wireless sensor networks. Flush provides end-to-end reliability, reduces transfer time, and adapts to time-varying network conditions. It achieves these properties using end-to-end acknowledgments, implicit snooping of control information, and a rate-control algorithm that operates(More)
A main challenge with developing applications for wireless embedded systems is the lack of visibility and control during execution of an application. In this paper, we present a tool suite called <i>Marionette</i> that provides the ability to call functions and to read or write variables on pre-compiled, embedded programs at run-time, without requiring the(More)
We present the philosophy, design, and initial evaluation of the Trio Testbed, a new outdoor sensor network deployment that consists of 557 solar-powered motes, seven gateway nodes, and a root server. The testbed covers an area of approximately 50,000 square meters and was in continuous operation during the last four months of 2005. This new testbed in one(More)
An integrated hardware and software system for a scalable wireless sensor network WSN is designed and developed for structural health monitoring. An accelerometer sensor node is designed, developed, and calibrated to meet the requirements for structural vibration monitoring and modal identification. The nodes have four channels of accelerometers in two(More)
Sukun Kim†, Shamim Pakzad‡, David Culler†, James Demmel† Gregory Fenves‡, Steve Glaser‡, Martin Turon? {binetude, culler, demmel}@eecs.berkeley.edu {shamimp, fenves, glaser}@ce.berkeley.edu mturon@xbow.com † Electrical Engineering and Computer Sciences and ‡ Civil and Environmental Engineering ? Crossbow Technology, Inc. University of California at Berkeley(More)
ion that supports existing implementations, more so than building a narrow waist that exports a set of services that new implementations are expected to adhere to. While future applications may use such features, the disregard for these interfaces by current protocols, coupled with the desire to maintain a lean narrow waist, leads to a top-down focus. In(More)