作　　者： ; ;

机构地区： 中山大学信息科学与技术学院电子与通信工程系

出　　处： 《电力系统自动化》 2003年第8期66-69,共4页

摘　　要： 提出了一种扩频载波或窄带载波数字脉冲间隔调制 (C- DPIM)电力线载波通信系统。采用线性扫频扩频载波对 DPIM符号进行编码 ,引入脉冲前导码作为传输数据块的同步信号以防止差错传播 ,并采用单片机实现了该系统。研制了电力线载波通信接口收发控制器 ,使其在呈时变、高信号衰减特性并存在复杂干扰的电力线网络上实现理想的数字通信 ,已成功地用于基于列车 3 80 A spread spectrum carrier or narrow band carrier digital pulse interval modulation (SS-DPIM) communication strategy for power-line communication is proposed. The DPIM symbols are encoded using a linear swept frequency spread spectrum carrier coupled to the power line ,and a preamble DPIM frame with a fixed interval is used to mitigate data error propagation. The presence of the frequency swept carrier on the PL represents the presence of a DIM pulse, and the absence of the carrier represents the spacing state of the SS-DPIM frame. A theoretical analysis of the data transmission rate and the data block error rate is established. The SS-DPIM system is implemented by a single-chip micro-processor and applied successfully in a train fault information system based on the 380 V power-line communication. The experiment results show that the SS-DPIM system has an advantage over most other power-line communication systems in the bit data error rate.

关 键 词： 电力线通信 收发器 载波数字脉冲间隔调制 电力线载波通信系统 电网 电力系统

领　　域： [电子电信] [电子电信] [电气工程]