Application Research Of Wireless Sensor Network Used In Rail Trains

The wireless sensor networks application and function of train monitoring system are deeply studied in the paper based on the research of the systems in use.Firstly, an L type monitoring system network used on the train based on ZigBee technical is proposed in this paper. The bottom wireless sensor networks is especially introduced, and a hardware and software scheme design of LonWorks-ZigBee gateway is proposed. Then the monitoring network experiment is designed and analysised.A communication system between train and ground based on 802.11 technical is designed according to the research and analysis of QoS requirement. A network solution is designed on the basis of network criterion simulation, and the system is proved to be practicable. An optimal route algorithm T-AODV is proposed and programmed, which can improve the unstable caused by cutover and energy unbalance of 802.11. According to the result of simulation, the optimal route algorithm T-AODV is proved better than AODV in train and ground communication scene.The monitoring research and experiment of generator train oil consumption intent to find the main factor and its influence degree. Then the oil consumption can be monitored and controlled by this factor, and finally the goal of oil saving can be realized. By the analysis of interrelated research, the temperature difference between inside and outside is the main factor of generator train oil consumption. A well fitting mathematic model is established by the method of system identity. The monitoring and control of generator train oil consumption can take into action by the temperature difference in the future use. It's also provide a reference of oil consumption prediction and evaluation, while suggest ministry of railways a more reasonable sampling frequency.