摘要
介绍了扩频通信原理及远程抄表系统的结构 ,针对低压电力线背景噪声大、信号衰减大的缺点 ,提出了将 DPSK直序扩频应用于电力载波远程抄表系统的思想并完成了总体方案的设计 ,之后介绍了调制解调芯片 PL 2 10 1的结构及其在本系统中的工作原理。最后简要介绍了系统抄表计费模块的软件设计方案。本系统有着很高的实用价值和广阔的应用前景。
The principle of the spread spectrum communication and the structure of the remote meter reading system are introduced in the paper. In allusion to the defect of big noise and signal attenuation, we put forward the idea of applying DPSK DSSS to the system and design the total scheme and then introduce the structure of PL2101 chip and its work in the system. At last, the design of software module is briefly introduced. The system presented in the paper provides high utility value and wide application foreground.
出处
《现代电子技术》
2004年第9期17-19,共3页
Modern Electronics Technique
