公交车站间的无线接力数据通信  

Wireless relay data communication among bus stops

作　　者：袁冰冰 郭黎利[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《应用科技》2004年第12期11-13,共3页Applied Science and Technology

摘　　要：介绍了一种基于无线数传模块,采用令牌传输方式的无线接力数据通信系统,来实现公交车站间数据通信,从而掌握每辆公交车的到站情况,提高公交系统的工作效率.提出了系统的构成原理,讨论了数据通信中可能产生的载波冲突及减少冲突的通信协议.给出了基于nRF401芯片和89C52单片机的无线数传模块的硬件设计.此无线数据通信有经济、便捷、可靠等优点,可被广泛采用.A wireless relay data communication system among bus stops is introduced based on wireless data transmit module, and it uses the way of token ring to realize the communication among bus stops, detect the bus arriving and improve the efficiency of bus system. A scheme for constructing the system is given. The carrier confliction and protocol of avoiding confliction are discussed.The hardware design of wireless transceiver module is given based on nRF401 chip and 89C52 single chip microprocessor. This system has characteristics of economy, flexibility and stability. It has wide application.

关 键 词：无线数传模块 接力传输 NRF401 89C51 

分 类 号：TN925[电子电信—通信与信息系统]