一种电动汽车充电站监控终端的设计与实现

摘要

为了满足电动汽车充电站监控终端硬件接口丰富、可扩展性强，软件系统具有较高的实时性、可靠性和稳定性的要求，针对站内监控设备种类及数量较多、通信方式多样化的特点，给出了一种电动汽车充电站监控终端的设计与实现方法。基于该方法设计的监控终端，采用ARM与FPGA双核为主芯片，通过专门设计的并行总线架构实现两者的互联，外围接口丰富，可扩展性强；构建了基于Xenomai框架的嵌入式实时Linux操作系统，保证了良好的用户态实时性和优秀的内核态实时性，并且具有较高的稳定性和可移植性。目前该监控终端已经在多个电动汽车充电站成功投运，证明了该监控终端用于电动汽车充电站监控系统的正确性和实用性。%In view of the various equipments that monitored and diversified communication modes in the electric vehi-cle charging station, the hardware of monitoring terminal should have rich interfaces and strong extensibility, and the software system should have the high real-time performance, reliability and stability.Thus, the method of design and implementation of the monitoring terminal for the electric vehicle charging station is proposed in this paper.The design of monitoring terminal based on the method above, which has rich peripheral interface and strong sclability, adopting dual-core chips of the ARM and FPGA, and the two interconnection with each other through the bus through the spe-cial design of parallel bus architecture.The embedded real-time Linux operating system which was constructed based on the framework of the Xenomai, not only has a good user-mode real-time and excellent kernel-mode real-time, but also has higher stability and portability.Currently, the correctness and practicability of the monitoring terminal has been proved by the successful trial in electric vehicles charger stations.