适于电气化铁道的微机计轴通信子系统的研究

Research on the Communication Subsystem of Microcomputerized Axle-Counting Equipment Applied in Electrified Railways

简述了微机计轴技术的现状和一般构成，以ＪＷＪ—Ｃ型微机计轴设备为例，分析了其通信子系统的性能。在此基础上，针对上述系统的缺陷，提出了一种新的微机数据通信子系统的结构，并以Ｉｎｔｅｌ８３４４（作为微控制器兼通信控制器）和Ａｍ７９ｌ０（作为调制解调器）实现了此子系统。这种新的设计具有数据通信的标准接口，通信有效性得到显著改善。最后，根据电气化铁道恶劣的电磁环境，提出了抗电磁干扰的对策，从而使系统可适于电气化铁道的应用。

This paper gives a general description on architecture and state-of-the art of microcomputerized axle-counting equipment,then analyzes the features of the communication subsystem of a type named JWJ-C.A new architecture is presented and a design is provided,The new idea meets the demands of data communication standard,and improves the efficiency of data transmission remarkably.Finally,considering the strong electromagnetic interference of electrified railway,the main solutions of anti-interference have also been discussed,ensuring this system can be applied in the electrified area.