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随着无线网络技术和传感技术的发展,物联网时代促进了无线传感网络监控系统的发展,监控系统已经从视频监控的传统模式被无线传感网络的监控模式所取代.无线传感网络监控系统中最主要的技术是ZigBee技术,ZigBee技术可以实现多个传感器之间的相互通信.本文对无线传感器网络的特点和功能进行了分析,在ZigBee技术的基础之上对无线传感器网络监控系统的硬件和软件进行了设计和研究. 相似文献
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在分析无线传感器网络应用于现代农业的优势的基础上,简述了面向设施农业的无线传感器网络的系统架构以及节点构成,概括了当前国内外对设施农业中无线传感器网络的研究进展与应用现状,并分析了尚需解决的问题,给出了无线传感器网络今后发展的建议。最后,对设施农业中无线传感器网络的发展趋势做了展望,指出以无线传感器网络技术为基础的农业物联网是设施农业的发展方向。 相似文献
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无线传感器网络技术作为物联网的关键技术之一,其安全机制直接影响着物联网的安全。文章从物联网的安全问题出发,研究无线传感器网络的安全机制。 相似文献
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为提升电力设施传感器网络监测效率,通过引入无线物联网技术构建无线传感器网络,并根据电力设施传感器监测性能需求,对无线传感器监测频谱分配问题进行了深入研究,提出了基于优先级的时频资源竞争分配机制;在此基础上,利用MATLAB仿真软件对所提出的频谱竞争分配机制进行了仿真。 相似文献
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随着物联网技术的深入发展,无线传感器网络的应用也越来越广泛.然而,无线传感器网络的技术还有待进一步的发展,也促使人们对于无线传感器网络协议的深入探究.本文针对无线传感器网络协议的网络层协议和MAC层协议的分类做了详细的描述和总结,为后续人们进一步研究做好铺垫. 相似文献
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无线传感器网络在军事领域中的应用研究 总被引:1,自引:0,他引:1
无线传感器网络(Wireless Sensor Network,WSN)不仅是物联网技术发展的重点,同时也在信息化作战中具有广阔的应用前景.本文首先介绍了无线传感器网络的基本概念和结构,其次分析了无线传感器网络在战场环境下的潜在优势以及在军事领域中的应用现状,最后介绍无线传感器网络军事应用需解决的关键性问题. 相似文献
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随着物联网技术的发展,无线传感器网络和RFID网络的融合技术渐渐成为一个热点的研究问题.通过将无线传感器网络的环境感知能力和RFID的物体识别定位能力结合起来的异构网络能极大的增强人们获取信息的全面性.在本文中,我们提出了一种基于WSN和RFID的异构网络的构建方法.该方法将无线传感器网络的环境感知能力和射频标签的物体识别能力结合起来,极大的提高了人们获取信息的全面性. 相似文献
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Chunsheng Zhu Lei Shu Takahiro Hara Lei Wang Shojiro Nishio Laurence T. Yang 《Wireless Communications and Mobile Computing》2014,14(1):19-36
Wireless sensor networks (WSNs) which is proposed in the late 1990s have received unprecedented attention, because of their exciting potential applications in military, industrial, and civilian areas (e.g., environmental and habitat monitoring). Although WSNs have become more and more prospective in human life with the development of hardware and communication technologies, there are some natural limitations of WSNs (e.g., network connectivity, network lifetime) due to the static network style in WSNs. Moreover, more and more application scenarios require the sensors in WSNs to be mobile rather than static so as to make traditional applications in WSNs become smarter and enable some new applications. All this induce the mobile wireless sensor networks (MWSNs) which can greatly promote the development and application of WSNs. However, to the best of our knowledge, there is not a comprehensive survey about the communication and data management issues in MWSNs. In this paper,focusing on researching the communication issues and data management issues in MWSNs, we discuss different research methods regarding communication and data management in MWSNs and propose some further open research areas in MWSNs.Copyright © 2011 John Wiley & Sons, Ltd. 相似文献
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高效的差错控制编码技术(ECC)可以增强无线传感器网络传输稳定性、网络的能量利用效率。为了充分利用无线传感器网络中蕴含的分集资源应对恶劣信道环境导致的高差错概率,该文研究了基于根校验全分集LDPC码的差错控制编码技术。首先,提出在分簇无线传感器网络中,基于根校验全分集LDPC码的编码方案;其次,设计了适用于所提方案的速率兼容全分集LDPC码字结构。最后,分析了所提编码系统的能效。仿真结果表明,在信道条件较差的环境中(仿真中,信道噪声大于410-4 mW),采用该文的编码方案,能够显著提高无线传感器网络的能效。 相似文献
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In Wireless Sensor Networks (WSNs), main challenges which restrict the performance are data computation, lifetime, routing, task scheduling, security, organization and localization. Recently, numerous Computational Intelligence (CI) based potential solutions for above mentioned challenges have been proposed to fulfill the desired level of performance in WSNs. Use of CI gives autonomous and strong solutions to ascertain precise node location (2D/3D) with least hardware necessity (position finding device, i.e., GPS empowered gadget). Localization of target nodes in static scenario can be done more precisely. However, in case of mobility, determining accurate position of each node in network is a challenging problem. In this paper, a novel idea of localizing target nodes with moving single anchor node is proposed using CI based application of Particle Swarm Optimization (PSO) and H-Best Particle Swarm Optimization (HPSO). The moving anchor node is following the Hilbert trajectory. Proposed algorithms are actualized for range-based, distributed, non-collaborative and isotropic WSNs. Only single moving anchor node is used as a reference node to localize the target nodes in the entire network. In proposed algorithms, problem of Line of Sight (LoS) is minimized due to projection of virtual anchor nodes. 相似文献
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基于最小连通支配集的无线传感网拓扑构建研究 总被引:1,自引:0,他引:1
基于通信虚拟主干网的拓扑构建是关闭冗余节点,节省全网能耗的有效方法。该文将全连通网络环境下寻找最优虚拟主干网问题抽象转化成最小连通支配集求解问题(MCDS),并建立了基于混合整数规划的数学模型(NMIP-MCDS)。NMIP-MCDS在分析MCDS解的基础上,确定以令牌分发数与节点能耗乘积为目标的优化函数,通过令牌分发同时辅以全网能量负载均衡的方式,构建最优MCDS。仿真实验结果验证了NMIP-MCDS的有效性,并可进一步实际应用在中等规模的无线传感网中。 相似文献
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Janjarapu David Sukeerthi Kumar Makam Venkata Subramanyam Arugudi Pataiah Siva Kumar 《International Journal of Communication Systems》2023,36(17):e5609
Clustering is an indispensable strategy that helps towards the extension of lifetime of each sensor nodes with energy stability in wireless sensor networks (WSNs). This clustering process aids in sustaining energy efficiency and extended network lifetime in sensitive and critical real-life applications that include landslide monitoring and military applications. The dynamic characteristics of WSNs and several cluster configurations introduce challenge in the process of searching an ideal network structure, a herculean challenge. In this paper, Hybrid Chameleon Search and Remora Optimization Algorithm-based Dynamic Clustering Method (HCSROA) is proposed for dynamic optimization of wireless sensor node clusters. It utilized the global searching process of Chameleon Search Algorithm for selecting potential cluster head (CH) selection with balanced trade-off between intensification and extensification. It determines an ideal dynamic network structure based on factors that include quantity of nodes in the neighborhood, distance to sink, predictable energy utilization rate, and residual energy into account during the formulation of fitness function. It specifically achieved sink node mobility through the integration of the local searching capability of Improved Remora Optimization Algorithm for determining the optimal points of deployment over which the packets can be forwarded from the CH of the cluster to the sink node. This proposed HCSROA scheme compared in contrast to standard methods is identified to greatly prolong network lifetime by 29.21% and maintain energy stability by 25.64% in contrast to baseline protocols taken for investigation. 相似文献
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Sandeep Verma Sakshi Bhatia Sherali Zeadally Satnam Kaur 《International Journal of Communication Systems》2023,36(16):e5583
A wireless sensor network (WSN) is a network of tiny sensors deployed to collect data. These sensors are powered with batteries that have limited power. Recharging and/or replacement of these batteries, however, are not always feasible. Over the past few years, WSN applications are being deployed in diverse fields such as military, manufacturing, healthcare, agriculture, and so on. With the ever-increasing applications of WSNs, improving the energy efficiency of the WSNs still remains to be a challenge. Applying fuzzy logic to the problem of clustering exploits the uncertainty associated with the factors that affect the lifetime of these sensors and enables the development of models that would improve their performance in real-world applications. We present a comprehensive review of various fuzzy-based techniques for clustering in WSNs whose main goal is to optimize energy usage in WSNs while simultaneously improving their overall performance. 相似文献
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In Wireless Sensor Networks (WSNs), it is necessary to predict computational overheads of security mechanisms without final implementations to provide guidelines for system design. This paper presents an accurate and flexible model to predict overheads of these mechanisms. This model is based on overheads of basic operations frequently used in cryptography algorithms, which are essential elements of security mechanisms. Several popular cryptography algorithms and security mechanisms are evaluated using this model. According to simulation results, relative prediction errors are less than 7% for most cryptography algorithms and security mechanisms. 相似文献