Research On Efficient Routing Protocol Of Wsn For High Speed Train Compartments Operation Environment Monitoring

With the rapid development of China’s high-speed railway,the safety and comfort of trains have gradually become the focus of passengers.Besides,because of people’s high demand for ride quality,it is necessary to monitor a large number of human sensitive parameters such as vibration,temperature,air pressure,oxygen content etc.The spread of the new crown epidemic and the demand of negative pressure cabin for special transportation in the closed environment further improve the requirements of environmental monitoring for train compartments.Due to the advantages of wireless sensor network,such as high flexibility,high monitoring accuracy,the application of wireless sensor network to train compartments environment monitoring has become a research hotspot.Based on the application of wireless sensor network environmental monitoring in train compartments,this thesis proposes an efficient routing protocol(RC-LP,Railway Compartment based on LEACH and PEGASIS)of wireless sensor network for environmental monitoring of high-speed train compartments by analyzing the core technology of routing protocol.First of all,this thesis analyzes the actual demand of high-speed train compartments’ environmental monitoring and the challenges faced by the adoption of wireless sensor network,discusses the main relevant contents of wireless sensor network and routing protocol in detail,mainly studies the architecture,network characteristics and application fields of wireless sensor network routing protocol,and compares the application and performance of typical routing protocols,which all lay a theoretical foundation of efficient routing protocols for train compartments operation environment monitoring.Secondly,the appropriate compartments operation environment monitoring wireless sensor network topology and related network model are established through the analysis of the actual application scenario and function realization of the train compartments.The representative LEACH protocol of clustering routing protocol and PEGASIS protocol of chained routing protocol are deeply studied and analyzed.Aiming at the monitoring characteristics of train compartments(clustered)and train compartments marshalling(chained)as a special scene,the characteristics and advantages of LEACH cluster routing protocol and PEGASIS chain routing protocol are analyzed.Besides,the improved strategies in the specific application scenarios are analyzed.The cluster head election strategy based on the improved particle swarm optimization algorithm and the efficient transmission mode based on the improved PEGASIS algorithm are adopted respectively.An efficient routing protocol based on wireless sensor network for high-speed train compartments operation environment monitoring is proposed.Finally,the thesis uses MATLAB to verify the designed routing algorithm.Based on the simulation of cluster head election strategy algorithm,inter-cluster communication improvement algorithm and integrated whole routing algorithm RC-LP,The simulation results show that the algorithm of cluster head election strategy and the improved algorithm of inter cluster communication have significantly improved the network performance compared with the original algorithm.The life cycle of RC-LP is increased by 63.5% and 55.0% respectively compared with leach and PEGASIS,which increases the amount of data received by the base station.At the same time,the network delay is also significantly improved.The routing protocol designed in this thesis has a certain application value for wireless monitoring of train compartments operation environment.