A High Quality Event Capture Scheme for WSN-based Structural Health Monitoring
In recent years, there has been an increasing interest in the adoption of Wireless Sensor Networks (WSNs) for Structural Health Monitoring (SHM). However, considering the large amount of sampled data, limited power supply and wireless bandwidth of WSNs, it is generally not possible for sensor nodes to monitor structural condition continuously especially for long-term SHM. From SHM perspective, it is highly desirable to collect data during the occurrence of some certain kinds of events such as earthquakes, large wind, etc, since data collected during these periods are more informative for damage detection purpose. However, these events in SHM occur infrequently and if happen, only last for a very short period of time.