基于MI200E的低压电力线载波通信系统设计  

Design of low-voltage power line carrier communication based on MI200E

作　　者：陈颖曼[1] 吴琴[1] 

机构地区：[1]南京信息工程大学江苏省气象传感网技术工程中心,江苏南京210044

出　　处：《实验技术与管理》2015年第1期70-74,共5页Experimental Technology and Management

基　　金：国家自然科学基金项目(41175033)

摘　　要：为了进一步提高电力线通信质量,在讨论低压电力线载波通信信道性能的基础上,分析了信道带宽与信噪比的关系,论述了扩频通信技术的基本原理和实现方法,采用直接序列扩频载波技术,设计了基于MI200E的低压电力线载波通信系统,该系统具有QPSK扩频调相、过零同步、分时传输、功耗低的特点。该系统在单片机的控制下,通过MI200E及相应接口电路,实现了信号耦合、滤波及数据发送和接收等功能,实际测试达到了良好的通信效果。The powerline communications technology has become a new field in the communication.In order to further improve the communication quality of power line,the low-voltage power line carrier communication channel performance is discussed,the relationship between the channel bandwidth and SNR is analyzed,the spread spectrum communication technology is expounded,the basic principle and implementation method,using the carrier technology of direct sequence spread spectrum,designs the power line carrier communication system based on MI200 Ewith QPSK spread spectrum phase modulation,zero synchronization,time-transfer characteristics,and the low-power design has low power consumption.This system has realized signal coupling,filtering,and data transmission and reception functions,under the control of the microcontroller,through MI200 Eand peripheral circuits.The communication effect is good through the actual test.

关 键 词：载波通信 电力线 MI200E 

分 类 号：TN913.6[电子电信—通信与信息系统]