电力线载波通信接口电路的设计  

Design of Interface Circuit for Power Line Carrier Communication

作　　者：杨桂林[1] 

机构地区：[1]菏泽学院机电工程系,山东菏泽274015

出　　处：《通信技术》2010年第5期77-78,81,共3页Communications Technology

基　　金：菏泽学院科学研究基金资助项目(NO.XY09JX01);山东省高校科技计划资助项目(NO.J09LD55)

摘　　要：在用电智能化管理和配电自动化中,利用电力线载波通信是一种最有效、最经济、最简便的数据传输方式。在实验和应用电力线载波集成芯片ST7538的基础上,首先对该芯片的功能、特点及工作原理进行了较全面的介绍;然后根据其特点、工作模式及数据传输方式等方面设计了一种新型、高效的电力线载波通信接口电路,该电力线载波通信接口电路主要由发送滤波器、耦合变压器、接收滤波器、保护电路四部分组成。最后通过反复实验、长期测试与现场应用,证明了电力线载波集成芯片ST7538具有性能优良、功能强大、使用方便等特点,其接口电路既能高效率地传输载波信号,又能完全地隔离50～60Hz的工频信号,具有进一步推广应用的价值。Power line carrier is the most efficient,economic and convenient data transmission technology in intelligent management system of power consumption and automatic distribution system.Based on the experiment and application of new electric carrier chip ST7538,this paper describes in detail its function,characteristics and operation principle,then gives a ST7538-based design of interface circuit.The interface circuit principally consists of the sending filter,the coupling transformer,the receiving filter and the protection circuit.Finally,the measurement and application results show that the ST7538 chip has good performance and powerful function,and its peripheral circuits are simple,the interface circuit could both efficiently transmit carrier signals completely isolate 50 Hz/60 Hz signal from LVPL,the chip and its interface circuit are of popularization and application value.

关 键 词：电力线载波 ST7538 FSK调制 接口电路 

分 类 号：TN913.6[电子电信—通信与信息系统]