<title>Wireless sensor seismic response monitoring system implemented on top of NEESgrid</title>

Abstract

Emerging wireless sensor technology presents a tremendous opportunity for developing low-cost monitoring systems for civil infrastructure. A set of wireless MICA2 mote accelerometers were deployed on a reinforced concrete bridge column to collect data during a shaking table earthquake simulation test. The data from the test were ingested into a data and metadata system for testing the usability of the metadata description for data mining and visualization. The metadata system used the NEESgrid metadata services interface for backend storage. The results of the data acquisition and ingestion were used to determine the feasibility of using a comprehensive sensor, data storage, and data retrieval system for health monitoring.

A Summary Review of Wireless Sensors and Sensor Networks for Structural Health Monitoring

“…Damage (loss of bolt pre-load) is successfully identified in the study. Wong et al (2005) have presented another approach to the software design of a data repository driven structural monitoring system. Their work examines the integration of wireless sensor networks with a large data network utilized in structural testing laboratories.…”

“…As part of the network, cable-based sensors installed upon test specimens are utilized to pass data into a nationally centralized data repository remotely located on the Internet. In particular, the system of Wong et al (2005) utilizes the MICA2 Motes to continuously stream measurement data via a wireless communication link to a local wireless access point. Data transmitted by the wireless sensors use specific headers that allow metadata to be created for the wireless sensor data prior to its entry into the national data repository.…”