基于以太网的车载LCD分屏器系统设计  

System Design for LCD Spliter in Subway Train Based on Ethernet

作　　者：赵宇红[1] 曾雷[1] 温士魁 

机构地区：[1]北方工业大学信息工程学院,北京100144 [2]北京冠华天视数码科技有限公司,北京100038

出　　处：《电视技术》2009年第6期102-104,113,共4页Video Engineering

摘　　要：针对城市轨道交通列车的车载显示系统,提出了一种基于以太网的车载LCD分屏器设计方案。介绍了系统总体架构和系统软硬件设计方法。系统以FPGA为音视频信号处理核心,采用单片机和串口转网口模块实现系统控制和以太网接入,实现了每个车载分屏器输出8路模拟音视频到8个车载LCD,还实现了6节车厢分屏器的级联。通过以太网接入,实现了对每节车厢分屏器的网络控制和实时监测。Specific to the display system of subway train in urban rail transportation, a scheme of LCD spliter in subway train based on Ethemet is advanced. After explaining the general structure of the system, the key techniques of hardware and software design＇ are introduced in detail. In the system, FPGA is the processing center of audio and video signal, MCU and the module of UART to network interface are responsible for system control and Ethemet access. The system is realized that one LCD spliter outputs 8 analog audio and video signals to LCD and LCD spliter can cascade connection up to 6 grades. Through accessing Ethernet, every LCD spliter can be real-timely monitored.

关 键 词：城市轨道交通 音视频信号 网络控制 以太网 

分 类 号：TN943[电子电信—信号与信息处理]