【作者】 吕海；

【导师】 李红信；

【作者基本信息】 兰州大学 ， 通信与信息系统， 2008， 硕士

【摘要】 电力线应用于通信领域源于二十世纪初,电力线通信可以减少建立新的通信网络的代价,目前电力线通信技术正日益引起人们的关注。电力线通信主要应用于:自动远程抄表、配电网自动控制、智能家庭网络、多媒体通信的最后一公里解决方案等。本文首先介绍了国内外电力线通信的发展现状,之后对电力线通信信道的传输特性和信道噪声特性进行了研究。电力线通信具有特殊的干扰特性,包括噪声、阻抗变化、多径衰落等。而扩频通信技术具有伪随机编码调制和信号相关处理两大特点,以及抗干扰、抗噪声、抗多经衰落、低功率谱密度下工作等优点,文中也对扩频通信的原理及特点进行了探讨。本文选用SC1128芯片作为载波通信系统的核心器件。按照模块化设计思想,将整个系统分为多个模块,文中详细讨论了各部分电路设计、芯片设置和软件设计。最后,本文将载波通信模块分布式电源管理系统中进行了实际的应用,并对该系统的设计进行了详细的说明。更多还原

【Abstract】 The powerline has been applied into communication field since early twentieth century. Recently, people pay more and more attention on such kind of communicated technology because the powerline communication could reduce the cost for establishing new networks. The major application of powerline communication are focused on automatic meter reading, distribution automation and supervisory control, home-bus for making the building "Intelligent" and multimedia communication used as the last mile part communication.In this paper, we firstly introduced the development of the powerline communication technology. Then, we study the transmission characteristics of the powerline channel and the channel noise. The powerline communication had interferential features (including dominant and widely varying noise sources, impedance changes and multipath attenuation, etc.) while spread spectrum communication technology had the pseudo-random coding and signal processing features as well as the advantages of anti-interference, anti-noise, anti- multipath attenuation and working under Low-power spectral density. Thus, we also include the discussion of spread spectrum communication technology in this article.According to the principle of the modular design, we adopted SC1128 chip as the core apparatus of our carrier communication system and divided the whole system into different modules. And then the circuit design, chip configuration and software design were discussed within every module.Finally, the carrier communication system was applied into the distributed power management system and the design of such system was also detailed described in this article.更多还原