Abstract
With the development of railway transportation, it has put forward higher requirements for the safety of freight train. The present ground vehicle safety monitoring system, due to technical limitations, can’t meet the security requirement for real time information report of the train. Vehicular sensor can collect real-time vehicle information, to guarantee the safety of the train. Vehicle network is the basic of the communications between vehicular sensors. Because of the particularity of the freight train, a security vehicle network organization algorithm is proposed for the railway freight train based on lightweight authentication and property verification. Distance measured by distance sensor is the trigger event of the algorithm. The lightweight authentication makes the node trusted. Authenticating with speed and direction make the nodes belong to the same train. And ultimately vehicle network is established. Through the vehicle network, vehicle sensors collect data in real time and transmit to the ground processing system. Finally, ensure the safety of railway freight train.
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