毕业设计：基于IEEE802.15.4的无线传感器网络的研究（定稿）.doc

摘 要 在当今信息技术飞速发展的时代，无线通信技术的进步推动了低功耗多功能传感器的快速发展，能够集成信息采集、数据处理和无线通信等多种功能。 无线传感器网络（WSN）就是由在监测区域内大量的微型传感器节点组成，通过无线通信方式形成的一个以数据为中心，多跳的自组织网络系统。低成本、低功耗、应用简单的IEEE802.15.4标准的诞生为无线传感器网络及大量基于微控制应用提供了互联互通的国际标准，也为这些应用及相关产业的发展提供了有力的契机。IEEE802.15.4是一种针对低速无线个人区域网络（LR-WPAN）制定的标准，该标准经济、高效、低速率、工作在2.4 GHz ISM，用于个人区域网和对等网状网络。IEEE 802.15.4的无线传感器网络以其突出的特点和应用前景，将成为今后无线传感器网络发展的一大方向。 本文介绍了IEEE802.15.4的特点、构件及体系结构、发展前景本文还针对IEEE802.15.4标准及相关应用做了分析，IEEE802.15.4无线传感器网络进行无线通信时影响其稳定性的各种可能因素。通过Siliabs Laboratories公司2.4GHz 802.15.4开发硬件平台组建无线传感器网络，使网络节点间相互通信，采集终端节点的信号强度，进行分析，得出结论。并提出了的解决方法以及其实现的可行性,无线通信系统的实现进行了较完整的分析WSN)；IEEE 802.15.4；RSSI；无线信号强度 Abstract With the todays rapid development of information technology, the magic improvement of wireless communications technology promotes the low-power multifunctional sensor rapid developing, and make it integrate information collecting, data processing , wireless communications and many other functions. Wireless sensor networks (WSN) is a kind of multi-hop and self-organization network system which taking the data as center. It consists of a large number of micro-sensor nodes for wireless communication in the monitor regions. The appearance of IEEE802.15.4 protocol which is low cost, low power consumption and simple application offers the international standard for wireless sensor network and application based on micro-control. At the same time it offers the chance for the applications and the development of related industries. Low Rate Wireless Personal Area Networks (LR-WPAN) defined by IEEE802.15.4 is economic, efficient, low-rate transmission, and working in the 2.4 GHz ISM band. It uses in the personal area network and peer-to-peer mesh network. Based on IEEE802.15.4 WSN with outstanding characteristics and prospects will become a developing direction of WSN in the future. First of all, in this thesis it introduces the IEEE802.15.4 protocol , about its features, system architecture, the present situation and developing prospects and focused on the