A High Reliable Communication Technology in Electric Vehicle Charging Station

Cyber-Physic System (CPS) is a new complex system that is integrations of computation and physical process with many networks and technologies. The communication system in electric vehicle (EV) charging station introduced in this paper consist of data collect terminals, data transmission networks and data processing gateway, so it is a typical application of CPS. Because the reliability of communication is one of the most important factors that will affect reliable execution of the electric vehicle (EV) charging station, we propose a redundant communication mechanism combining the Power Line Carrier (PLC) communication technology and ZIGBEE wireless communication technology to transmit information and analyze the main factors that may affect the reliability of data communication during EV charging process and design different methods in data collection, data transmission and data convergence phase. A reliable mechanism which contains redundant sending, local cache and dynamic network organizing technologies have been implemented to guarantee the reliability of the communication in EV charging system. Furthermore, the technology introduced in this paper also can be implemented in other Cyber-Physic systems to improve communication reliability.