基于 ARM9与 PLC 技术的家庭安防系统设计

摘要

为提高家庭安防的智能化、简约化与成本最小化，以遍布每个家庭的电力线为主要通信介质，设计并实现了一种基于 ARM与电力线载波通信技术的微型嵌入式家庭安防系统。阐述了该系统的具体安防功能与整体结构组成，包括系统工作原理、系统硬件设计、电力线载波通信原理、网络接口电路、系统软件实施方案等，各从节点控制模块相互独立分散，功能上进行互补，除基本的火灾、可燃性气体检测报警等外，特殊地方的从节点增加门窗防盗与图像抓拍等功能。最后对各个节点模块与系统整体功能进行测试，表明系统稳定可靠，数据收发准确，且即插即用，能方便且稳定的应用于家庭安防系统中。%The power line,available in each family,is used as the main communication medium to design and implement of home security system based on ARMand Power Line Communication.The specific security functions of the system and overall structure,including the system operation principle,the system hardware design,power line carrier communication theory,network interface circuits,systems software im-plementation programs,etc.,are described in this paper.The control modules from the node are decentral-ized independently and complemented in functions,in addition to the basic fire,combustible gas detection alarm,the functions of security doors and windows and image capture in a special place from the node are added.Finally,the functional test conducted for each node module and system shows that it is reliable, has accurate data transceiver in plug and play,and easy to use stably in home security systems.