Abstract

While sensor network research has made significant strides in the past few years, the literature has relatively few examples of papers that have evaluated and validated a complete experimental system. In this paper, we discuss our deployment experiences and evaluate the performance of a multi-hop wireless data acquisition system (called Wisden) for structural health monitoring (SHM) on a large seismic test structure used by civil engineers. Our experiments indicate that, with the latest sensor network hardware, Wisden can reliably deliver time-synchronized tri-axial structural vibration data reliably across multiple hops with low latencies for sampling rates up to 200 Hz. This performance was achieved by iteratively refining the system design using a series of test deployments. Our experiences suggested the need for careful onset detection in order to preserve the fidelity of the structure's frequency response …

Date

2005

Authors

J Heidemann, L Krishnamurthy

Conference

emnets

Pages

v-v

Publisher

IEEE