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文章标题: 基于LPC2103的RS485总线通信机的设计及应用
发表期次: 2009 年 11 期
作者名: 侯丙安 王振松 刘晓云
作者单位: 电子科技大学 自动化工程学院,成都 611731
关键词: RS485总线;通信机;监舍门禁控制系统;LPC2103
中文摘要:       该文详细论述了基于LPC2103的RS485总线通信机的软、硬件设计。在上位机与各从站节点间增加通信机,承担上位机的轮询工作,可以改进主从式结构的RS485总线,使上位机从繁忙的通信工作中解放出来,并能够提高系统独立性,加快系统从故障中恢复的速度,从而有效地提高了系统的可靠性、安全性。本通信机已成功应用于某监舍门禁控制系统,系统性能得到了明显的改善。
英文部分:

Design and Application of Communication Device for RS485 Bus Based on LPC2103

HOU Bing-an, WANG Zhen-song, LIU Xiao-yun
(Department of Automation, University of Electronic Science and Technology, Chengdu 611731, China)
Abstract:The paper introduces software and hardware design of RS485 bus communication device based on LPC2103 in details. The communication device, working between a master computer and slave station nodes, does the polling work once accomplished by the master computer so as to improve the RS485 bus with a master-slave structure. It releases the master computer from busy polling tasks; the independence of the system can be improved, and it is faster for the system to recover from a failure; thus, the reliability and safety of the system are improved effectively. The communication device has been successfully applied in a prison access control system. The system’s performance is improved obviously.
Key words:RS485 bus;communication device;prison access control system;LPC2103

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