The MAC Protocol Optimization And Simulation Of WSN In Ship Engine Room

With the rapid development of computer control technology, electronic information technology and network communication technology, modern ship's automation has improved greatly, and has gradually formed ship comprehensive automation including the engine room automation, sailing automation, information integration and loading automation. The engine room auto-monitoring system is an important component of engine room automation, whose main function was the collection and management of the operating parameters, equipment state and malfunction information of engine room's equipment. This article is based on wsn in the Engine Room Monitoring system application, MAC protocol does not meet the needs of ship engine room monitoring, optimization and simulation for MAC protocol.First of all, this article introduces the purpose and significance of the study, the research background, and the current condition of vessel engine room automation and WSN. Second, analyzing and summarizing the WSN structure and the existing vessel monitoring system, designing the applications of WSN in the engine room. Analyzing the MAC protocols of WSN, pointing out that the existing protocols can not be good for the application of the cabin. Designing the shipwsn-mac protocol bass on design criteria. Constructing virtual clusters that use different channels,increasing sleep time of the nodes that do not transfer,Synchronization algorithm and the backoff algorithm optimization, in order to reduce the energy consumption of nodes,improve the synchronization accuracy between nodes and reduce the channel conflict as network traffic flow. Finally, the existing protocols and shipwsn-mac protocol were simulated by OPNET, comparison and analysis of the simulation results, and made a summary and outlook.The article is that the MAC protocol of WSN in engine room optimization and simulation and improving the existing wireless sensor protocols, meeting the monitoring requirements of ship engine room equipment. WSN applications would be better on monitoring equipment in the cabin, and solving a problem that the WSN application in the engine room.