| 单片机串行通讯技术在数据采集系统中的应用 |
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| 引用本文： | 余国卫,陈俊生,张丽平,王向磊.单片机串行通讯技术在数据采集系统中的应用[J].微处理机,2005,26(4):94-96. |
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| 作者姓名： | 余国卫 陈俊生 张丽平 王向磊 |
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| 作者单位： | 沈阳理工大学信息科学与工程学院,沈阳,110168 |
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| 摘 要： | 能够完成异步通信的硬件电路称为UART,即通用异步接收器/发送器(Universal Asynchronous Receiver/Transmitter),本文介绍了应用8051单片机一主机多从机组成的串行异步通讯接口技术进行数据采集,采用RS-485标准接口通信,其抗干扰能力强,可与32台从机通讯,传输距离可达1200m,最大传送速率1Mb/S.
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| 关 键 词： | 异步通信 多机通信 主机 从机 |
| 文章编号： | 1002-2279（2005）04-0094-03 |
| 收稿时间： | 2005-04-15 |
| 修稿时间： | 2005年4月15日 |
The Application of the Serial Interface CommunicationTeachnique of One- chip Machines in the System of Collecting Experimental Data |
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| Yu GuoWei;Chen JunSheng;Zhang LiPing;Wang XiangLei.The Application of the Serial Interface CommunicationTeachnique of One- chip Machines in the System of Collecting Experimental Data[J].Microprocessors,2005,26(4):94-96. |
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| Authors: | Yu GuoWei;Chen JunSheng;Zhang LiPing;Wang XiangLei |
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| Abstract: | The hardware circuit which can fulfill the task of asynchronous communication is called UART, which means Universal Asynchronous ReceiveI/Transmitter. Experimental data can be collected precisely if the serial Asynchronous communication imerface technique of 8051 one - chip machine is properly used. The 8051 one - chip machine is composed of one principal machine and many subordinate machines. If the interface up to RS -485 standards is used to communicate, the ability to resist interference is strong. It can be applied to the communication of 32 subordinate machines. The transmittingdistance can reach 1200m. The maximum transmitting rate can reach 1Mb/S. |
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| Keywords: | RS-485 |
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