Enhanced architecture for SHM system based on optical sensor and WSN

Stability of civil structures is one of the main issues to be considered for the aging of bridges, buildings, tunnels, mines, dams, aircraft or other aging structures. They must be checked correctly, thus, security of civil structures, especially tunnels and bridges, pose a great matter for civil engineering. Therefore, Structural health monitoring ‘SHM’ takes more and more an important area in modern society, that's why several researchers are interested in this topic, new, they try to use novel technology to monitor different civil structures. Furthermore and more importantly, SHM systems are now used to quantify the change in state of the structure. Hence, through SHM systems we can deduce about the prognosis aspects such as capacity and remaining life. SHM has emerged from a vast field of intelligent structures. SHM encompassed lateral disciplines such as signal processing, sensor operation, optical fiber sensor (OFS), wireless network design, etc. In this paper, we are interested to advance an enhanced architecture of SHM system using emerging technologies, we aim to investigate wireless tunnel health monitoring ‘WTHM’ and wireless bridge health monitoring ‘WBHM’ based on optical fiber sensor. We treat the case of bridge "Rades-La Goulette" in Tunisia, we propose to use optical fiber sensors and wireless sensor networks "wsn" in this bridge. As well, we try to measure damage especially temperature, strain and pressure using Raman, Brillouin and FBG sensors using our enhanced system. To this end, we propose in this paper an enhanced architecture for SHM system based on optical and WSN.