Structural Health Monitoring Using Wireless Sensor Networks

Structure monitoring brings new challenges to wireless sensor network: high-fidelity sampling, collecting large volume of data, and sophisticated signal processing. New accelerometer board measures tens of G acceleration. High frequency sampling is enabled by new component of David Gay. With new component, up to 6.67KHz sampling is possible with jitter less than 10s. Large-scale Reliable Transfer (LRX) component collects data at the expense of 15% penalty of channel utilization for no data loss. To overcome low signalto-noise ratio, analog low-pass filter is used, and multiple digital data are averaged. Structure monitoring is a driving force for extending capability of wireless sensor networks system.