| 一种光纤现场总线通讯系统的分析与设计 |
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| 引用本文： | 杨国栋,梁自泽,李恩,范长春. 一种光纤现场总线通讯系统的分析与设计[J]. 高技术通讯, 2009, 19(7). DOI: 10.3772/j.issn.1002-0470.2009.07.017 |
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| 作者姓名： | 杨国栋 梁自泽 李恩 范长春 |
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| 作者单位： | 中国科学院自动化研究所复杂系统与智能科学实验室,北京,100190 |
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| 摘 要： | 针对煤矿、机场等特殊工业现场,设计了一种基于复杂可编程逻辑器件(CPLD)和光模块的光纤现场总线通讯系统.在物理层,该系统使用光纤代替双绞线,提高了通讯的速度和抗电磁干扰能力,并通过CPLD进行信号的调制解调以及现场设备传输模式的切换,实现光电信号之间的转换,使整个通讯系统形成环形拓扑网络,提高了通讯的可靠性.在应用层,通过定义扩展帧、设置帧号和位图、使用管道技术等,提高了系统的通讯效率和准确性.技术分析表明,该通讯系统具有较实用的兼容性及可扩展性.
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| 关 键 词： | 现场总线 复杂可编程逻辑器件(CPLD) 光模块 通讯协议 |
Design and analysis of a fiber field-bus communication system |
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| Yang Guodong,Liang Zize,Li En,Fan Changchun. Design and analysis of a fiber field-bus communication system[J]. High Technology Letters, 2009, 19(7). DOI: 10.3772/j.issn.1002-0470.2009.07.017 |
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| Authors: | Yang Guodong Liang Zize Li En Fan Changchun |
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| Affiliation: | Yang Guodong Ling Zize Li En Fan Changchun (Laboratory of Complex System and Intelligent Science,Institute of Automation,Chinese Academy of Sciences,Beijing 100190) |
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| Abstract: | A fiber field-bus communication system based on complex programmable logic devices(CPLD)and optical transceiver was designed for some special industrial fields such as colliery and airfields .In the physical layer of the sys- tem,fiber instead of twisted-pair was used to improve the communication efficiency and the capability of anti-electromag- netic interference,and the CPLD was used to modulate and demodulate signals,to translate digital signals to optical sig- nals,and to switch the transmission modes o... |
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| Keywords: | field-bus complex programmable logic devices (CPLD) optical transceiver communication protocol |
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