基于Zigbee技术的低功耗智能家居监控系统设计

摘要

为使传统的家电设备具备联网功能，使普通用户在现有住宅条件下都能体验到低成本的智能家居生活，提出了一种基于Zigbee技术的嵌入式智能家居监控系统。为实现低功耗设计，系统首先以低功耗、低成本为原则进行硬件选型，其次针对无线传感网络中节点电池供电生存周期短导致网络失效等缺陷，适当减少节点的采集工作量，结合电源管理机制，设计了定时-外部中断和定时-接收端发起这两种节点休眠模式。系统测试结果表明，传感器节点由2节5号电池供电，能平均维持3个月，其功耗比全功耗发射模式节约了67%左右。%To make the traditional household appliances capable of net communication,a smart home monitoring embeded system based on Zigbee technology is designed which can provide low-cost smart home user experience under the existing housing conditions.To realize low power consuming design,the system ifrstly chooses hardware based on low power consuming and cost principles.Secondly,it adopts power management mechanism to design two WSN sensor node sleep modes of the timing-external interruption and timing-receiving end launching.The testing result shows that such sleep modes can save about 67%Power Consumption with nodes powered by two 5th batteries.