电力远程抄表系统的混合通信和中继技术研究

Research on remote meter reading system using hybrid communication and cooperative relaying

电力远程抄表系统的本地通信环境复杂,需要不同的通信方式进行协作才能完成可靠的数据传输。采用微功率无线与电力线2种各具特色的混合通信方式,并引入中继技术,可以提高远程抄表系统的整体性能。针对电力远程抄表系统中无线与电力线混合通信问题,设计了无线/电力线混合通信系统,并开发了模块无线/电力线混合通信单元,设计了基于接收信号强度的混合通信信道选择及中继选择算法,可以依据链路质量自适应选择电力线/无线通信方式和中继节点。测试结果表明,设计的具有信道和中继选择的混合通信系统可以明显提高抄表的成功率。

Due to the complex local communication environment of power remote meter reading system,different communication methods is required to work together to achieve reliable data transmission.A hybrid communication method which is a combination of micro power wireless and power line communication is adopted,and a relay technology is adopted to improve the performance of remote meter reading system.Aiming at the problem of hybrid communication of power transmission line network and wireless network,a hybrid communication module for the co?working of power line and wireless network is designed.A communication channel and relay selection algorithm based on received signal strength is proposed,which can adaptively select power line or wireless communication mode as well as the relay node according to the link quality.The test results show that the designed hybrid communication system with channel and relay selection can significantly improve the effective rate of meter reading.