The invention relates to a train passenger information system based on Ethernet and OFDM (Orthogonal Frequency Division Multiplexing) and a control method thereof, the train passenger information system comprises a main control card ACSU (Access Control Unit), DACUs (Data Access Control Unit) arranged in each cab, PECU (Emergency Intercommunication Unit) arranged in a passenger room, PACUs (Picture Access Control Unit) arranged in each carriage and a monitoring module, the main control card ACSU, the PECU and the PACUs are in communication connection through the Ethernet or the OFDM network, and the monitoring module is connected with the DACUs. The Ethernet and the OFDM network are mutually redundant, and the monitoring module is in communication connection with each terminal device and is used for collecting the online state of each terminal device and switching the backbone network and the standby network through abnormity judgment. A double-network architecture mode is adopted in the passenger information system, when the backbone network is abnormal, the terminal equipment can know network faults through state signals and use data on the standby network in time, the two networks can be seamlessly connected, meanwhile, the advantages of the Ethernet and the OFDM network can be exerted, the high redundancy effect is achieved, and the service life of the system is prolonged. Good application and popularization values are realized.

    本发明涉及一种基于以太网和OFDM的列车乘客信息系统及其控制方法,包括:主控制卡ACSU、安装在每个驾驶室中的DACU、安装在客室的紧急对讲通话器PECU、安装在每节车厢中的PACU以及监控模块,主控制卡ACSU、PECU、PACU之间通过以太网或OFDM网络进行通信连接,以太网和OFDM网络相互冗余,监控模块与各终端设备通讯连接,用于采集各终端设备的在线状态,并通过异常判断切换主干网络和备用网络。本发明在乘客信息系统中采用双网络的架构方式,当主干网络异常时,终端设备可以通过状态信号知道网络故障,并及时使用备用网络上的数据,两个网络可以无缝衔接,同时可以发挥以太网、OFDM网络自身优势,达到高度冗余的效果,具有较好的应用推广价值。


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    Title :

    Train passenger information system based on Ethernet and OFDM and control method thereof


    Additional title:

    基于以太网和OFDM的列车乘客信息系统及其控制方法


    Contributors:
    LIU QUANLI (author) / WANG ZHIGANG (author) / GAO GUANG'EN (author)

    Publication date :

    2023-04-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION , Übertragung digitaler Information, z.B. Telegrafieverkehr / B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC / H04W WIRELESS COMMUNICATION NETWORKS , Drahtlose Kommunikationsnetze



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