【摘要】 列车通信网(TCN)是在开式列车上使用实时协议的数据通信局域网,它由多功能车辆总线MVB和绞线式列车总线WTB构成。它的数据差错控制能力是保证系统安全性的重要因素,由于TCN本身的特点,决定了它不能采用传统局域网的差错控制方式。论文介绍了TCN中的差错控制方法,并将其与以太网中所采用的差错控制方法进行了比较。详细讨论了TCN中使用"半比特检错"方式的优点并分析了TCN各类差错出现的概率。更多还原

【Abstract】 Train communication network is a data communication local network which uses real-time protocols in open train. It covers multifunction vehicle bus and wire train bus. Its capability of data error control is the essential factor of the system security. The characteristics of the train communication determine it can not adopt the data error control method which used in the traditional local network. The paper introduces the error control method in the TCN and compares it to the method which used in Ethernet, expatiates the advantage of the "semi-bit error detection" method is expatiated and the probability of the possible errors is analyzed.更多还原