基于现场总线理念的多业务列车通信网络

Multi-server Train Telecommunication Network over Fieldbus Idea

为了实现多业务信息传输系统,采用SSB调制方式实现各车厢间的模拟话音通信,利用DSP查询中断的方法实现数据的复用/分路,将各信源输入视频和智能I/O数据复用成特定帧结构的一路传输数据输出至总线,以构成旅客列车内的多业务综合通信系统.

In order to implement the multiservice system information transmission, the analog voice communications among carriages are achieved using SSB modulation and the data multiplexing /demultiplexing are achieved with DSP inquiring the interruption. The input video and intelligence I/O data of several sources are multiplexed according to specified frame structure and are sent to the bus, in this way the multiservices integrated communication system in the train can be formed. 