基于ST7540的低压电力线通信分簇组网方法研究

目前,在低压配电网电力线窄带通信系统中存在通信可靠性差,通信距离短等问题.为此,介绍了一款最新推出的高性能电力线载波调制解调芯片ST7540的基本原理和新特征,给出了基于ST7540的电力线载波通信模块硬件接口电路和滤波电路.在此基础上,为了提高基于该芯片的窄带电力线载波通信系统的可靠性,提出并讨论一种基于非交叠分簇算法的电力线通信组网方法.经仿真和试验表明,该组网算法可以动态地建立电力线通信网络路由,实现自动中继.

Study on Network Construction Clustering Method of Power Line Communication over Low-Voltage Networks Based on ST7540

There are some limitations about communication reliability and length in the power line communication over low-voltage networks.For these reasons,the basic theory and the new characters of a kind of power line carrier modem chips named ST7540 are introduced.The main hardware circuit and the filter circuit of power line communication module based on ST7540 are also designed.On the base of these,in order to enhance the reliability of the narrow band Power Line Communication(PLC)over low-voltage networks,an Power Line Communication router method based on irreciprocal cluster algorithm is presented and discussed.The simulation and the experimentation indicate that this route algorithm presented can build the PLC networks route dynamically,and realize the automatic relay.