智能家居网络的电力线通信实现方法研究

【作者】 崔振兵；

【导师】 曾碧；

【作者基本信息】 广东工业大学 ， 计算机应用技术， 2004， 硕士

【摘要】 21世纪是一个以网络为核心的信息时代。随着网络技术的快速发展，消费电子产品逐渐与计算机、通信技术紧密结合在一起，从而使家电上网、构建智能家居网络成为可能。Echelon公司提出的“Bring the Internet to life”，即“把互联网带入生活”，反映了实现智能家居网络已成为计算机网络在人们生活领域发展的一种趋势。 家电联网，用电力线作传输介质，不但可以省去布线的烦恼，同时也可实现“即插即用”。考虑到电力线通信干扰大。传输可靠性差，传输速率低的特点，本文设计了以DSP芯片为核心的电力线收发器，采用正交频分复用(OFDM)宽带通信技术实现电力线上的数字调制与解调，并采用模拟滤波和数字滤波相结合的方法进行抗干扰。为了减少传输的差错，本系统采用卷积码和交织码相结合的方法，可以有效的进行差错控制。本文给出了电力线收发器各个环节的硬件电路和软件实现，并附有系统设计的实验结果。更多还原

【Abstract】 As known, the 21st century is an information epoch whose core is the network technologies. With the rapid development of the network technology, consuming electronic products are becoming combined with computer and communication technologies closely, which makes it possible to connect household appliances to Internet and to implement intelligence home networks. The slogan Bring the Internet to life brought forward by the corporation Echelon indicates that it is a trend to realize intelligence home networks with computer network developments in the household living field.In solutions to connect household appliances to computer networks, power lines are utilized as transmission medium without laying lines and the plug and play is also realized.Considering large communication interferences, bad transmission reliabilities and low transmission velocities, the theis designs a power line transceiver whose core is the DSP chip. The Orthogonal Frequency Division Multiplexing (abbrieviated as OFDM) is used as modulations and demodulations of signals in the powerlines. In the meantime, analogue filterings and digital filterings are used to resist interferences. Besides, wrapped product codes and intertexture codes are used to reduce transmission errors.After the descriptions of the designs of hardware circuits and softwares in detail, the thesis shows the experimental results with profound analysis in the end.更多还原