| 列车控制网络专用双绞线传输特性的研究 |
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| 引用本文： | 宋娟,王立德,严翔,申萍.列车控制网络专用双绞线传输特性的研究[J].铁道学报,2012(3):61-67. |
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| 作者姓名： | 宋娟 王立德 严翔 申萍 |
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| 作者单位： | 北京交通大学电气工程学院 |
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| 基金项目： | 中央高校基本科研业务经费(2011JBZ011) |
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| 摘 要： | 根据传输线理论,给出双绞线的分布参数信道模型。通过分析普通双绞线的参数,采用数值拟合的方法推导出MVB物理层介质的数值模型参数,建立RLCG数值模型,并对R、L、C和G的频率特性进行仿真分析,得出传输线的频谱特性、特征阻抗、系统可靠运行情况下的衰减特性、可用带宽、信道容量等,最终实验验证了模型的正确性,为进一步研究列车专用双绞线的信号传输特性提供了支持。
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| 关 键 词： | MVB介质 频谱特性 数值拟合 信道容量 |
Research on Transmission Characteristics of Specialized Twisted Pair Wires of Train Control Network |
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| SONG Juan,WANG Li-de,YAN Xiang,SHEN Ping.Research on Transmission Characteristics of Specialized Twisted Pair Wires of Train Control Network[J].Journal of the China railway Society,2012(3):61-67. |
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| Authors: | SONG Juan WANG Li-de YAN Xiang SHEN Ping |
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| Institution: | (School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044,China) |
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| Abstract: | In accordance with the theory of transmission line,the distribution parameters channel model of twisted pair wires was proposed.The numerical model parameters of the MVB physical layer medium were deduced by numerical fitting thourgh analysis of numerical model parameters of common twisted pair wires.The RLCG numerical model was established,and simulation of the frequency characteristics of R,L,C and G was performed.Spectrum characteristics and characteristic impedances of the transmission line were obtained;and the attenuation characteristics,available bandwidth and channel capacity in the case of reliable operation were also got.Finally the correctness of the model was verified by the experimental results.This research lays a foundation for further research on the signal transmission characteristics of special train twisted pair wires. |
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| Keywords: | MVB medium spectrum characteristics numerical fitting channel capacity |
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