| As structural health monitoring (SHM) technology for large civil structures has become a worldwide hot topic, design and instrumentation of structural health monitoring system for existing structures is received more and more attention by the researchers. Smart structural health monitoring (SSHM) technology based on wireless sensor networks (WSNs) providing a new method for structural status information acquisition, safe operation of structure and system instrumentation. Considering network organization technology for large-scale wireless sensor network of large structural health monitoring, a highly efficient energy-saving wireless sensor networks routing protocol is investigated and developed.Firstly, current development of SHM technology and application of WSNs technology in SHM are introduced. Secondly, based on analysis and comparison with routing protocols for WSNs, considering large numbers of nodes, individual nodes with extremely limited resource and data remotely transmission in a WSNs for large structural health monitoring. A highly efficient energy-saving routing protocol named WSPSHM (Wirelesss Sensor Protocol for Structural Health Monitoring) is developed, and details of routing algorithm are presented. Finally , the network simulation software NS2 is briefly introduced. Test and performance evaluation of routing algorithm with NS2 are discussed. Detailed flow and analyzing results of simulation are presented. Compared with current routing protocols, WSPSHM could effectively reduced radio frequency and ensure that the entire networks have higher throughput and longer life cycle at low level of energy consumption. Feasibility of network organizing technology for WSNs of large structural health monitoring is demonstrated.
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