摘要
根据教室电器节能系统的需要,介绍了基于电力线载波芯片LM1893的电力线载波电路的设计。重点论述了关键器件信号耦合变压器的设计。系统采用串行数据的异步半双工通信方式,实现了数据在教室单片机与上位机控制软件之间的双向传输,传输准确可靠。
A power line communication system based on the special carrier chip LM1893 is introduced in the paper. It is a part of the classroom energy control system. The paper emphasizes on the design of the key component-the transformer for signal coupling. The system uses the asynchronous half-duplex communication. It realizes the reliable communication between the MCUs in the class-rooms and the computer.
出处
《微计算机信息》
北大核心
2008年第8期267-269,共3页
Control & Automation
基金
广东省科技攻关项目基金(2005B10201008)
关键词
电力线载波
异步半双工通信
单片机
信号耦合变压器
power line carrier
asynchronous half-duplex communication
MCU
signal coupling transformer
