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自组织无线传感器网络的研究 总被引:13,自引:0,他引:13
低功耗无线电通信技术、嵌入式计算技术和微型传感器等技术的飞速发展和日益成熟 ,使得大量的、低成本的微型传感器通过无线链路自组织成无线传感器网络成为现实。本文介绍了自组织无线传感器网络的概念和特点 ,阐述了自组织无线传感器网络的有关理论、关键技术和研究热点。 相似文献
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对于智能工厂而言,基于无线传感器网络作为主体的泛在感知计算网络是其感知元监测的基础。在智能工厂之中,智能分析系统可以实现当前实际情况的分析,然后决策下一步采取的措施。大部分感知信息都是位置相关的,所以在智能工厂之中,针对内外部人员定位、区域特征参数或者是事件定位等都需要无线传感器网络定位技术的支持。因此,本文基于智能工厂来进行无线传感器网络定位技术进行分析。 相似文献
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无线传感器网络是一种以数据为中心的网络,由于其具有硬件资源受限、自组织网络结构、网络动态性等特征而有别于传统无线网络,因而数据收集问题是无线传感器网络的主要研究课题。介绍了无线传感器网络数据收集系统的结构和功能,概括了无线传感器网络数据收集需解决的关键问题和关键技术,对路由协议、安全管理、数据压缩等关键技术的研究现状进行了总结和分析,并对数据收集关键技术的发展方向进行了展望。 相似文献
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信息化战争要求作战系统"看得明、反应快、打得准",打得准的关键是对目标进行定位跟踪。文章介绍了无线传感器网络的基本概念和体系构成,探讨了无线传感器网络技术在战场目标定位跟踪方面应用的原理,讨论了无线传感器网络应用于战场目标跟踪定位的关键技术。 相似文献
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基于无线传感器网络设计一套战地装备智能监控系统,该系统由集成特定传感器的多个监控节点和配套通信及数据处理软件构成。系统结合智能传感器网络技术、无线射频(RFID)技术和有线通信网络技术,可在战地恶劣条件下快速构建一个以无线自组网为终端、以内网为骨干的混合网络。系统通过监控节点协作地感知、采集和处理网络覆盖区域内特定对象的信息,实现重要装备自动注册、关键设备运行状态自动监测、前指驻地周边环境定位、监控和报警等多种功能。 相似文献
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In this paper, we introduce a mobile application with intelligent systems to provide services for cyclists and enhance their cycling experiences in smart cities. The application utilizes smartphones and low-power ZigBee technology for ad-hoc networking. Since ZigBee chipsets have not been included yet in recent smartphones, we develop a Smartphone-ZigBee embedded system that we use in building a mobile application for low-power low-bandwidth wireless ad-hoc networking with acceptable ranges. Cyclists can join either public networks or create their own private networks to exchange information and utilize several developed services. For voice communication between cyclists, we develop a multilingual voice communication system with an innovative smart spectrum and energy management approach. A sender cyclist can speak in his own language while being translated and heard in a clear voice by the receiver cyclist in another language with an acceptable delay less than 1 s. We also develop an intelligent geo-localization system that utilizes smartphone’s GPS receiver to provide real-time geo-locations and speeds of all cyclists connected to the same network on a visual interactive map. The latter system adaptively manages the number of visits to the GPS receiver according to various system parameters to reduce power consumption. Moreover, we develop an emergency system that provides a platform for efficient collaboration between cyclists in emergency conditions. To ensure safety of cyclists, all our services are accessed vocally. Furthermore, we provide an energy harvesting system using the movement of the bike for power generation. 相似文献
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论述了基于ZigBee无线通讯的智能家居控制系统设计,以Android手机为控制中心,ZigBee无线通讯为桥梁,实现一种星型的ZigBee网络在智能家居中的应用。该系统以TI公司的CC2530单片机为主控,通过ZigBee自组网,终端设备将采集到的数据通过Z-stack协议栈,发送到ZigBee协调器,通过串口将数据发送到电脑及手机上并显示出来,实现了对设备的集中管理与控制。测试结果表明,ZigBee组网成功,终端节点能轻易地检测到各子模块连接的传感器信号,并可通过手机控制节点信号。 相似文献
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Babich F. Comisso M. D'Orlando M. Mania L. 《Communications, IEEE Transactions on》2007,55(7):1344-1353
This paper investigates the performance of a distributed wireless network in which the nodes are equipped with fully adaptive smart antennas. The main goal is the evaluation of the influence that the geometrical configuration of the antenna array has on network throughput and packet delay. Analysis and simulations are performed to study the relationship between the geometry of the antenna array and the network topology. In this paper, the performance degradation due to both the small-channel angular spreads and the speed of mobile nodes is investigated. The results, which hold for the low-rank channel model only, extend to this specific case previous results obtained in ideal channel conditions. The study adopts an access scheme, previously proposed for ad-hoc networks, which is able to exploit the interferer suppression capabilities of smart antennas, together with realistic models for the antenna and the channel behaviors. 相似文献
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无线传感器网络新型MAC协议研究 总被引:3,自引:3,他引:0
无线传感网络集成了传感器技术、计算技术和通信技术,它能实时检测、感知和采集网络分布区域内的各种监测对象的信息,具有极为广阔的应用和发展前景.丈章介绍了一种无线传感网络的新的MAc层协议-EZMac协议,并提出了一种基于EZMac协议的无线传感器网络节点的设计方案. 相似文献
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在工业电气自动化系统中,越来越多的传感器应用到供配电系统,针对智能配电系统的多种需求,构建了包括软件层、通讯网络层以及智能设备层的新型智能配电系统,并在多种情况下,针对通讯层与硬件层之间的交互方案进行了讨论,对如何实现智能设备层监控进行了论述,基于新型的设计理念,对本研究的方法进行了验证和分析,试验表明,本研究的方案通讯质量好,稳定性好。 相似文献
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This paper concerns with control design for networked pneumatic systems with uncertain communication delays. In the practical networked control systems (NCSs), there are usually unavoidable plant and communication delays. It has been known that time delays may not only deteriorate the system performance, but also destabilize the controlled plant. To alleviate the influence resulting from time delays while maintaining performance, a mixed fuzzy-PID/neural network compensating scheme is applied to the pneumatic system with communication delays. Real-world experiments verify effectiveness and superiority of our proposed approach. 相似文献