Reliability Research And Application Of Monitoring Topological Structure Of Internet Of Things For Hazardous Sources

With the rapid development of the Internet of Things technology,the fields of application are becoming more and more extensive.Security monitoring is one of the important fields.With the increasing demand for safety monitoring,more and more research on the reliability of safety monitoring systems.How to improve the reliability of the Internet of Things system,the first is to design the coverage strategy of the wireless sensor network,the coverage strategy of the wireless sensor network is directly related to the monitoring perception of the target area and the optimal allocation of restricted resources,which has certain research value and meaning.The research work in this paper mainly revolves around the reliability analysis and optimization of the Internet of Things monitoring system.With the background of the Internet of Thingsbased hazard source monitoring system as the background,a reliable Topology,the redundancy mechanism of key nodes is studied,and an opportunistic routing protocol for energy balance is proposed.The main research work is as follows:(1)This paper focuses on the coverage deployment method of wireless sensor network for three-dimensional environment,and proposes a node deployment scheme suitable for hazardous environment.The performance of triangle mesh,quadrilateral mesh and hexagon mesh is evaluated from two aspects of coverage area and effective coverage.Based on theoretical analysis and formula derivation,the problem of complete coverage of three-dimensional area is transformed into a study of multiple plane coverage.In this paper,the nodes are deployed on the regular hexagonal grid with better performance.From the perspective of topology,a deployment strategy of full coverage of three-dimensional area is proposed,and the mathematical expression of the minimum number of nodes is derived.(2)The relevant mechanism of the reliability of the monitoring system is studied to ensure the accuracy of the information in the data collection and transmission parts.Usually the key nodes use redundancy mechanism to improve the reliability of the monitoring system,but too much redundancy will bring difficulties in cost and management,so according to the actual situation,the reliability of the two parts of the cluster head node and transmission is studied.And quantitative analysis of related parameters.(3)An opportunity routing protocol based on cost function is proposed.In this protocol,the cost function is used as the priority index,the neighbor node with lower forwarding cost is selected as the candidate node,and an optimal path is selected for transmission,which can alleviate the energy consumption of key nodes,solve the problem of uneven network load,extend the network life cycle,and improve the data Reliability of transmission.In summary,this paper optimizes the reliability of the monitoring system from three aspects: node deployment mode,reliability guarantee mechanism and routing protocol,which has a significant effect on improving the topological reliability of hazardous source environment safety monitoring The reliability of monitoring also has a certain value,and it can also provide a reference for other complex hazardous source environments.