Research On Backup Sensor Deployment In SHM Based On Reliability

Wireless sensor network technology serves as a bridge between the physical world and the computer world.Compared with wired sensors,wireless sensor nodes have low power consumption,easy deployment,low cost,high precision,and high fault-tolerance performance,making them more widely used in structural health monitoring systems.Structural health monitoring system is helpful for the maintenance and maintenance of large-scale infrastructure.The application of wireless sensor network reliability has important theoretical significance and practical value.Based on the node-failure network model,this paper consider the problem of optimal deployment of structural health monitoring based on reliability,that is,how to ensure the reliability of the network and minimize the backup wireless sensor nodes deployed.Firstly,the location topology is transformed into the wireless sensor network topology while maintaining its reliability.Secondly,two methods to improve network reliability are proposed and the upper bound of the reliability of the class?(n,m)is proved.Finally,backup sensors are given by the optimization strategy—INR-R0 algorithm.The simulation results show that inthe actual building network structure,compared with the BSP and FEM algorithms,the-INR-R0 algorithm can ensure that the network reliability exceeds the threshold R0 only by adding fewer backup sensors.