【作者】 薛松；

【导师】 陆生礼； 虞建立；

【作者基本信息】 东南大学 ， 软件工程， 2015， 硕士

【摘要】 现有的智能照明系统多数采用有线网络,存在着移动性差、施工复杂等问题。与有线控制方式相比,无线控制方式具有布置灵活、移动性好、成本低等优势。在蓝牙、Wi-Fi和Zigbee等多种无线通信技术中,Zigbee技术在大规模自组网、功耗以及价格方面有着无可比拟的优势,所以在智能照明系统中有着广泛的应用。路由算法是Zigbee协议网络层设计的关键性问题,本文基于Zigbee技术,根据所设计系统的特点,对网络层路由算法中的树型路由算法进行了优化和改进。改进型的树型路由算法一方面通过建立横向连接的方式,有效地解决树型网络能量分布不均衡的问题。另一方面,在发生树干断支的情况下,采用断支整体接入网络拓扑的方法完成网络的修复,能有效减小地路由开销。基于以上路由方法,本文实现了一套具有改进型Zigbee树型路由算法的智能照明系统。设计从软件和硬件两方面对系统进行实现,硬件包括协调器和灯控模块,软件主要针对上位机管理平台、协议栈和任务调度系统。实际测试和实验证明,基于改进型树状路由算法的Zigbee智能照明系统可实现50个灯控节点,最大深度网络深度为10的灯光控制网络,并可对灯光实现10个等级的调节。此外,系统的组建时间小于10s,丢包率能够控制在5%以内。相比基于传统Zigbee树型路由算法的系统,本文设计的系统传输延时可降低14.6%,并有效地降低了断树融合的路由开销,完全符合设计指标要求,对进一步开发更加完善的智能照明系统有借鉴意义。更多还原

【Abstract】 Most existing lighting control system use the cable network and all of them have the problems of poor mobility, complex construction and so on. Compared with the cable control mode, wireless control mode has the advantage of flexible layout, good mobility and low cost. In the wireless communication technology of Bluetooth, Wi-Fi and Zigbee, Zigbee technology has incomparable advantages in large-scale ad-hoc network, so it has been widely used in the intelligent lighting system.Routing algorithm is the key issues in the designing of Zigbee’s network layer. Modified tree routing algorithm improves the original tree routing in two aspects. Firstly, through the establishment of lateral connection way, it can solve the problem of network’s unbalanced energy distribution effectively. Sencondly, in the event of a broken branch, the modified tree routing algorithm repairs the broken branch by making them acess the tree in a whole which can effectively reduce the routing overhead.Based on the above design.this paper implements a set of wireless intelligent lighting system with improved Zigbee tree routing algorithm.The design of hardware includes coordinator and lamp control module,software is mainly developed for PC management,the protocol stack and task scheduling system. Experiments show that the system can control 50 lamp node,the maximum depth of lighting control network can reach 10 and it can implement 10 levels of adjustment to light.In addition,the system construction time is not more than 10s,packet loss rate is controlled within 5%.Compared to traditional Zigbee tree routing algorithm based system,this paper designs the system whose transmission delay can be reduced by 5%.更多还原