基于电力线载波的楼宇对讲系统的设计

Design of Building Intercom System Based on Power Line Carrier

针对传统楼宇对讲系统布线复杂、施工成本高的现状,设计出不需重新布线的电力线楼宇对讲系统。系统利用现有的电力线网络,即可实现其中任意两个终端之间的拨号通信。为了提高网络带宽利用率及降低传输比特率,语音信号采集之后用GSM6.10算法进行压缩,经电力线传播在另一终端解压播放。实验证明,该系统不仅能满足门禁的功能,而且扩展性强、维护方便、经济实用,具有很大的发展空间。

To the question that traditional building intercom system is complex in wiring and high cost in construction of the status quo,a building intercom system based on power line carrier without rewiring was designed.Any two commu-nication terminals in this system can communication by dialing up in the same electricity grid in existence.Speech sig-nal after a process of acquisition and compression by GSM6.10 algorithm can be transferred by the power line and be played after it receiving and decompression by another terminal.After this compression and decompression,it can im-prove network bandwidth utilization as well as reduce transmission bit rate.The results prove that the system can not only meet the requirement of the access control function and it is easy to extended and maintained as well.It is cost-less but useful,so it has a great space for development in smart building.