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28 V低压直流载波通信系统的增益特性研究及系统实现
朱俊辉1, 李荷丹2, 何明亮1, 张晓静2, 刘飞2, 陈乾宏1
1.南京航空航天大学 自动化学院,江苏 南京 211106;2.北京控制工程研究所,北京 100190
摘要:
重点分析了搭载通信节点的直流信道的高频传输特性与阻抗特性,指出实际物理传输信道的特性是影响信号传输增益、有效传输距离及可靠性的关键,并利用信道结构的电路解析模型推导给出了不同通信节点配置情况下的高频信号传输增益计算式。在此基础上,搭建了总传输距离为8 m的多节点直流载波通信实验平台,分别在1 MHz双节点与2 MHz多节点传输工况下验证了分析所得的信道传输特性的正确性与有效性,最终实现了28 V/100 W的直流功率与通信速率为115.2 kbit/s、零误码率的信号同步传输。
关键词:  电力线载波  直流载波通信  高频特性  阻抗特性  传输增益
DOI:10.16081/j.epae.202201029
分类号:TM73
基金项目:空间可信计算与电子信息技术实验室开放课题基金资助项目(OBCandETL-2019-04)
Research of gain characteristics and system implementation for 28 V low voltage DC carrier communication system
ZHU Junhui1, LI Hedan2, HE Mingliang1, ZHANG Xiaojing2, LIU Fei2, CHEN Qianhong1
1.College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China;2.Beijing Institute of Control Engineering, Beijing 100190, China
Abstract:
The transmission characteristics and impedance characteristics at high frequency of DC channel with communication nodes are emphatically analyzed, which indicates that the characteristics of actual physical transmission channel are key factors influencing the signal transmission gain, effective transmission distance and reliability of signal transmission. Meanwhile, the transmission gain formulas of high frequency signal under various node configurations are derived by using analytical circuit model of channel structure. On this basis, a multi-node DC carrier communication experiment platform with a total transmission distance of 8 m is established, based on which the experiments under 1 MHz/dual-node and 2 MHz/multi-node conditions are carried out to individually verify the correctness and effectiveness of channel transmission gain formulas obtained by analysis. In addition, the 28 V/100 W DC power transmission and zero-BER(Bit Error Rate) signal transmission with a bit rate of 115.2 kbit/s are realized simultaneously.
Key words:  power line carrier  DC carrier communication  high frequency characteristic  impedance characteristic  transmission gain

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