低压电力线载波通信模块设计

通信工程论文编号:TX372  论文字数:15460,页数:68

目录

摘要 I
ABSTRACT II
第1章 绪论  1
 1.1 背景 1
 1.1.1 电力线载波通信的发展过程和现状 1
 1.1.2 我国电力通信存在的问题 2
 1.1.3 单片机技术的发展 2
 1.1.4 电源的发展 3
 1.2 课题主要研究内容和意义 3
第2章 低压载波通信模块的原理 6
 2.1 通信过程分析 6
 2.2 电路分析 7
 2.2.1  PL3201芯片介绍 7
 2.2.2 外围电路分析 9
第3章 系统软件设计 17
 3.1 需求分析 17
 3.2 软件流程设计 18
 3.3 重要程序分析 21
第4章 系统测试分析 30
第5章 结论 33
致谢 35
参考文献 36
附录1 DEMO 板与PC 机的通讯协议 37
附录2 DEMO板原理图 39
附录3 DEMO板PCB图及3D效果图 40
附录4 串口中断测试程序 42
附录5 具体程序 46

摘要

 电力载波通信技术运用广泛，其中低压载波通信设备可以使供电部门及时掌握用户用电情况，监测有无窃电行为；根据需要进行供电控制；通过远程抄表节省抄表的人力物力。在未来的家用电器自动化控制等领域的应用范围及前景将会十分广阔。
 低压电力线载波抄表系统是集电表数据采集、载波传输、数据存储、数据通信、数据处理及断电控制等功能于一体的自动化系统[1]。
 本论文针对的是低压电力线载波抄表系统中的载波通信模块的设计制作。模块由电源部分，RS232接口部分，载波接口部分，单片机等接口电路部分组成[2]。
 通过北京福星晓程公司的单片机芯片（PL3201）完成数据在通信线路（电力线）的扩频发射，扩频接收；模块接收上位机串口下发的232数据，完成串口数据校验和解析处理，实现电力线载波数据的转发，还可以接收载波数据，处理后返回给上位机，由计算机对操作结果，信道数据进行检测显示[1]。

关键词：电力线载波，单片机，电源                               
  
ABSTRACT
 
 Power line carrier communication technology is used widely. Low-voltage carrier communication equipment which will help the electricity sector to make sure of the user’s electricity consumption in time,  monitor whether the user have the actions of stealing electricity ; According to the need for power supply control; through remote meter-reading to save the human and material resources. In the field of automatic household appliances control of the application of and prospects will be very broad.
 Low-voltage power line carrier meter reading system is set meter data collection, transmission carrier, data storage, data communications, data processing and power control functions in the integrated automation system.
 This paper is aimed at low-voltage power line carrier meter reading system in the carrier communication module is designed. The module is composed of power part,the RS232 interface part, the carrier interface part ,the single-chip microcomputer(SCM) interface part, and other interface circuit components.
  Through the company of Fuxing-Xiaocheng’s single-chip microcomputer chip (PL3201) in the completion of data communications circuits (power line) launched the spread spectrum, spread spectrum receiver; The module receives the PC serial port’s the 232 data, completes serial data validation and analytical processing, and comes true the power line carrier of data transmittion, can also receive data carrier, after the return to the PC, the operating results from the computer, the data channel Test shows.
 
 Keywords: Power Line Carrier, single-chip microcomputer, power