| 引用本文: | 王智慧,李建岐,黄毕尧,刘国军.基于dsPIC的工频通信系统装置研制[J].电力自动化设备,2011,31(2): |
| WANG Zhihui,LI Jianqi,HUANG Biyao,LIU Guojun.Development of power frequency communication equipment based on dsPIC[J].Electric Power Automation Equipment,2011,31(2): |
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| 摘要: |
| 针对我国配电网工频通信信道特性，开发了一种基于数字信号控制器的工频通信系统装置，包括子站装置和用户终端。对工频通信系统构成，以及信号调制和信号解调原理进行了介绍。在此基础上，设计了适合我国配电网信道特性的工频通信系统装置。 装置由主控单元、过零检测电路、信号调制 ／ 解调电路等部分组成，详细介绍了主控单元的选择和各功能电路的硬件实现及工作原理。采用模块化编程思想，并以C语言和汇编语言混合编程的方式完成了装置软件设计，给出了主程序和子程序的流程图。测试表明，所研制的装置现场运行可靠。 |
| 关键词: 工频通信系统 通信装置 数字信号控制器 信号调制 信号解调 |
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| Development of power frequency communication equipment based on dsPIC |
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WANG Zhihui, LI Jianqi, HUANG Biyao, LIU Guojun
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China Electric Power Research Institute，Beijing 100192，China
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| Abstract: |
| The constitution of power frequency communication system and the principle of signal modulation and demodulation are introduced，based on which the practical power frequency communication equipment suitable for the channel characteristics of China distribution network is developed with the DSC（Digital Signal Controller），including sub-station equipment and user terminal. It mainly consists of DSC，zero -crossing detection circuit，signal modulation circuit and signal demodulation circuit. The selection of DSC and the hardware implementation of different functional circuits are detailed with the working principle. The modularized system software is programmed with C and the assemble language. The flowcharts of main program and subroutines are presented. Test results show its stable and reliable operation on site. |
| Key words: power frequency communication system communication equipment DSC signal modulation signal demodulation |
