Power-free Structural Health Monitoring via compressive sensing

Structural Health Monitoring (SHM) plays an important rule to improve life safety and achieve economic benefits. The use of conventional wireless sensor networks for SHM incurs a huge maintenance cost for frequent battery changes. In this paper, we adopt passive RFID tags, which are power-free devices, to build fine-grained SHM systems. To get timely report of the monitoring data, we propose a power-free monitoring scheme with compressive sensing (PFM-CS) to collect aggregated SHM events. It takes the advantage of compressive sensing to reconstruct original events with high accuracy. We evaluate the performance of PFM-CS using the real world data trace collected from a nineteen-storey building in Singapore. The results validate the effectiveness and efficiency of PFM-CS.