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基于移动Agent和WSN的突发事件场景数据收集算法研究 总被引:1,自引:0,他引:1
该文针对无线传感器网络应用于突发事件监测场景的能量消耗和网络延迟问题,提出了基于移动Agent的无线传感器网络簇式数据收集算法.动态成簇过程基于事件严重程度,并由其决定簇的生命周期和覆盖范围.Sink和簇头之间形成以Sink节点为簇头的虚拟簇.移动Agent迁移路径规划过程中下一跳节点的选取基于节点剩余能量、路径损耗及受刺激强度.移动Agent通过节点遍历的方式完成对所有簇内成员节点信息的收集.仿真结果表明,相对于C/S数据收集模型,基于移动Agent的模型具有更好的节能效果,并能一定程度地减少网络延迟,尤其适用于大规模无线传感器网络应用. 相似文献
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无线传感器网络在农业信息化中的应用研究 总被引:1,自引:0,他引:1
无线传感器网络是计算机科学与自动化技术研究的一个热点问题,它综合了传感器技术、通信技术与微处理器技术,在当前农业信息化的发展中具有良好的应用前景。无线传感器网络适合温室、田间、动植物生长环境中信息的监测与采集。为农业信息化的有效应用提供信息采集、处理与决策的方案。本文介绍了无线传感器网络技术的网络结构、传感器节点构成与通信协议,分析了无线传感器网络在温室种植、农作物生长环境监测、节水滴灌技术、生物习性监测等方面的应用,探讨了无线传感器网络在农业信息化中的应用特点和研究进展。 相似文献
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无线传感器网络及其在环境监测应用概况 总被引:4,自引:4,他引:0
概述了无线传感器网络,简要介绍了无线传感器网络的体系结构及无线传感器网络的若干重要协议,分析了无线传感器网络在贵重武器及农作物环境监测中的一些应用概况。对无线传感器网络的核心问题之一-电能问题进行了探讨。最后对无线传感器网络在环境监测应用中的一些概况进行了展望。 相似文献
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针对无线传感器网络环境下低功耗路由问题,根据无线传感器网络是一种以数据为中心的网络的特点,提出了一种基于内容的低功耗路由协议CBP。其基本思想是:Sink节点根据上层应用构造谓词,并对谓词进行广播,网络中所有传感节点以Sink节点的谓词为依据建立路由表,实现数据路由。与现有无线传感器网络路由协议相比较,此路由协议具有低功耗,占用节点资源少,网络容错能力强等特点。仿真结果表明,在节点数量大于100的大规模网络中,基于内容的无线传感器网络路由协议功耗比定向扩散协议功耗降低19%。 相似文献
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无线传感器网络具有自组织路由、低功耗、低成本的特点,非常适合运行在某些恶劣甚至危险的远程环境中。本文给出了一种基于无线传感网的井下环境监测系统方案和设计,详细描述了系统架构、无线节点和网关硬件和软件设计、上位机信息分析和处理等。特别对系统中的关键技术,如节点电量管理、自组织路由实现、网关与上位机通信协议等进行了阐述。 相似文献
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随着无线网络技术的日益成熟及其对小型、微型移动设备的支持,无线移动传感器网络已经逐渐成为一个研究的热点。主要讨论了为无线移动传感器网络设计的一个自适应的体系结构。在该体系结构中,使用了一个区域和核心路由节点相结合的多层结构的方法来增加无线移动网络的信息传输能力、可扩充性和可靠性,并降低网络的能耗,这样就可以适应无线移动网络的高度动态性和移动性。 相似文献
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随着无线网络技术的日益成熟及其对小型、微型移动设备的支持,无线移动传感器网络已经逐渐成为一个研究的热点。主要讨论了为无线移动传感器网络设计的一个自适应的体系结构。在该体系结构中,使用了一个区域和核心路由节点相结合的多层结构的方法来增加无线移动网络的信息传输能力、可扩充性和可靠性,并降低网络的能耗,这样就可以适应无线移动网络的高度动态性和移动性。 相似文献
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Cheraghlou Mehdi Nazari Khadem-Zadeh Ahmad Haghparast Majid 《Wireless Personal Communications》2019,109(2):981-999
Wireless Personal Communications - The main application of wireless sensor networks is monitoring, and the nodes of these networks are located usually in harsh environments. Network management is... 相似文献
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无线传感器网络与自组织网络的研究现状 总被引:2,自引:0,他引:2
传感器网络综合了传感器技术、嵌入式计算技术、分布式信息处理技术和无线通信技术,是计算机科学技术的一个新的研究领域;自组织网络是一种移动、多跳、自律式系统,两者均具有十分广阔的应用前景.文章对传感器网络和自组织网络的概念、特征和发展动态等问题进行了介绍,重点分析了目前这两种网络的关键技术和研究现状.文章认为:传感器网络在特殊领域有着传统技术不可比拟的优势,而无线自组织网络通过临时组网的方式在恶劣环境中支持移动节点之间的无线传输,应用范围广阔.对这些网络的研究是中国未来高技术民用和军事发展的需要. 相似文献
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Recent advances in electronics and wireless communication technologies have enabled the development of large-scale wireless sensor networks that consist of many low-power, low-cost, and small-size sensor nodes. Sensor networks hold the promise of facilitating large-scale and real-time data processing in complex environments. Security is critical for many sensor network applications, such as military target tracking and security monitoring. To provide security and privacy to small sensor nodes is challenging, due to the limited capabilities of sensor nodes in terms of computation, communication, memory/storage, and energy supply. In this article we survey the state of the art in research on sensor network security. 相似文献
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Hu Cai Yin Zhang Hehua Yan Fangyang Shen Keliang Zhou Chunhua Zhang 《Mobile Networks and Applications》2016,21(5):879-889
With the rapid development of information communication technologies, industrial manufacturing environments and requirements have changed considerably. Since wireless sensor networks have become more and more popular, our production chains have improved with respect to efficiency, flexibility and security. On the other hand, building a secure, robust and fast network is an essential issue for enterprises. In the past, few experts focused on this issue of industrial applications and most of solutions proposed are not suitable for industrial environments. In this paper, we propose a real-time routing protocol for mobile wireless sensor nodes in industrial environments, which offers superior quality of service in terms of delay time. We use geographic routing and information contained in the nodes routing table to extract location information. Then we calculate the node which is nearest to the target node to reduce hop counts and achieve fast data package transfers. It optimizes the packets forwarding hops, which in turn reduces the delay time effectively. We used OPNET to analyze our protocol and results indicate that this algorithm is useful and suitable for wireless sensor networks 相似文献
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Sensor networks are deployed in numerous military and civil applications, such as remote target detection, weather monitoring, weather forecast, natural resource exploration and disaster management. Despite having many potential applications, wireless sensor networks still face a number of challenges due to their particular characteristics that other wireless networks, like cellular networks or mobile ad hoc networks do not have. The most difficult challenge of the design of wireless sensor networks is the limited energy resource of the battery of the sensors. This limited resource restricts the operational time that wireless sensor networks can function in their applications. Routing protocols play a major part in the energy efficiency of wireless sensor networks because data communication dissipates most of the energy resource of the networks. This paper studies the importance of considering neighboring nodes in the energy efficiency routing problem. After showing that the routing problem that considers the remaining energy of all sensor nodes is NP-complete, heuristics are proposed for the problem. Simulation results show that the routing algorithm that considers the remaining energy of all sensor nodes improves the system lifetime significantly compared to that of minimum transmission energy algorithms. Also, the energy dissipation of neighboring nodes accounts for a considerable amount of the total energy dissipation. Therefore, a method that reduces the energy dissipation by notifying the neighboring nodes to turn off their radio when not necessary is proposed. By reducing the unnecessary energy dissipation of the neighbors, the lifetime is increased significantly. 相似文献
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We explore synergies among mobile robots and wireless sensor networks in environmental monitoring through a system in which robotic data mules collect measurements gathered by sensing nodes. A proof-of-concept implementation demonstrates that this approach significantly increases the lifetime of the system by conserving energy that the sensing nodes otherwise would use for communication. 相似文献
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无线传感器网络数据收集问题综述 总被引:1,自引:0,他引:1
数据收集问题研究外界用户如何通过无线传感器网络从监控区域收集感知数据。传感器节点通过自组织方式构成网络,数据收集问题就是寻找高效可靠的方式将感知数据通过多跳的方式传输给用户进行分析和处理。近几年对数据收集问题的研究非常广泛,主要包含减少数据收集过程中的数据传输量、数据收集协议和大规模网络数据收集调度等问题。从以上几方面对数据收集问题进行综述。 相似文献
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《Selected Areas in Communications, IEEE Journal on》2009,27(4):387-399
Due to the introduction of telecommunication technologies in telemedicine services, the expeditious development of wireless and mobile networks has stimulated wide applications of mobile electronic healthcare systems. However, security is an essential system requirement since many patients have privacy concerns when it comes to releasing their personal information over the open wireless channels. For this reason, this study discusses the characteristics and security issues with wireless and pervasive data communications for a ubiquitous and mobile healthcare system which consists of a number of mobile devices and sensors attached to a patient. These devices form a mobile ad hoc sensor network and collect data that are sent to a hospital or healthcare center for monitoring. Subsequently, this paper discusses the innovation and design of a novel trust evaluation model. We then propose a secure multicast strategy that employs trust in order to evaluate the behavior of each node, so that only trustworthy nodes are allowed to participate in communications, while the misbehavior of malicious nodes is effectively prevented. We analyze the security properties of our multicast scheme and evaluate its performance based on simulation experiments. Our experimental results demonstrate that our scheme not only achieves the necessary data transmission in mobile environments, but also provides more security with reasonably little additional overhead. 相似文献