摘要
随着抄表系统和低压电力线通信技术的日益发展,利用低压电力线作为媒介的抄表方式得到了广泛关注。但由于我国低压配电网的干扰强,该方式的应用效果并不理想。为使抄表系统既节约成本,又满足通信距离的需求,设计了以双向工频通信技术作为通信手段的抄表系统。用二进制小波变换进行信号检测,实验结果证实该方法有效。根据DL/T645-1997规约,设计出有中继功能的通信协议。
With the development of meter reading system and low-voltage power line telecommunication, meter reading mode based on low-voltage power line has been widely concerned. However, due to the strong interference from low-voltage network of China, the application effect of this approach is not ideal. To make the meter reading system both reduce the cost and meet the needs of the distance communication, the meter reading system based on two-way automatic communication technology is designed, in which the binary wavelet transform is employed to realize signal detection. Test result shows this method is effective. The communication protocol with relay function based on DL/T645-97 was designed.
出处
《现代电子技术》
2010年第19期117-119,122,共4页
Modern Electronics Technique
基金
科技部十一五计划资助项目(2006BAJ04B06)
关键词
抄表系统
工频畸变
小波变换
通信协议
mater reading system
two-way automatic communication
wavelet transform
communication protocol
