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提出一种基于ZigBee协议的用于测量温度的无线传感器网络方案,方案中使用CC2530无线芯片和温度传感器DS 18B20搭建了一个基于ZigBee协议栈的无线传感器网络.该网络由一个协调器充当中心节点和若干个终端节点一起,构成一个星型网络,给出了传感器节点、协调器节点的硬件设计原理图及软件流程图.实验证明节点性能良好、通信可靠,通信距离明显增大. 相似文献
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《信息通信》2019,(6)
无线传感器网络路由协议自动化生成技术是无线传感器网络自动化组网的重要组成部分,为了进一步提高无线传感器网络路由协议自动生成质量和效率,在建立无线传感器网络路由协议自动生成模型的基础上融入一种改进的遗传算法,该算法通过引进自适应交叉算子和变异算子把模拟退火算法融入其中,很大程度上扩大了测试数据搜索生成范围,一定程度上克服了遗传算法的早熟收敛现象。在上述工作的基础上,提出把无线传感器网络路由协议自动生成算法封装为动态链接库(.dll)供系统调用,采用B/S架构,MVC开发模式,ASP.NET语言等技术设计并实现了一款基于改进遗传算法的无线传感器网络路由协议自动生成系统并进行性能测试,测试结果表明系统运行稳定,在无线传感器网络路由协议自动生成质量和效率方面满足要求。 相似文献
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传感器节点信息的获取、处理、实时显示,以及无线传感器节点的网络拓扑管理是无线传感器网络应用的关键.本系统采用了基于Zigbee技术的组网方案,进行了系统的网络架构研究,设计了检测系统终端节点的硬件平台和图形化人机交互界面,在此基础上构建无线传感器网络监控平台.该平台能及时显示节点信息以及网络拓扑关系,并能实现信息数据管... 相似文献
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在一些随机组网的应用场合,一方面要求每个传感器节点的数据必须被准确获得,另一方面又很难保证节点间的分布距离都在通讯距离范围内,这种情况下直接使用基于IEEE802.15.4协议的无线传感器网络存在问题。针对该问题,提出了一种功率自适应传感器网络解决方案,包括功率自适应协议及其软硬件实现方案。基于该方案,利用Crossbow公司的MICAz节点构建了一个通信距离自适应、低功耗、高可靠性的传感器网络,并进行了实际测试与验证。 相似文献
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Wireless sensor network consists of sensor nodes with battery operated device. The key challenges in the wireless sensor network are energy consumption and routing optimization. This work presents the cluster based load balancing (CBLB) routing protocol. The proposed routing protocol is used to minimize the energy consumption and increase the routing performance. It avoids the routing robustness, delay and increases the delivery rate and network performance. In existing techniques, different routing protocols such as LEACH, HEED and MESTER were used to increase the network performance and to decrease the energy consumption. But these existing techniques did not satisfy the performance requirements of wireless sensor networks. Hence, there is a requirement to develop a technique that meets the QoS requirements and needs of wireless sensor network. The proposed CBLB routing protocol creates a cluster head in the decentralized network and the cluster head will be used to distribute the workload evenly to the cluster members for reducing the energy consumption in wireless sensor network. Experimental results analyze the performance of the proposed protocol with the different existing protocols. The proposed protocol achieves high throughput, delivery rate and reduces the energy consumption, delay and routing overhead. 相似文献
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无线传感器网络的特性使它面临着比传统网络更大的安全挑战。路由协议作为无线传感器网络的关键因素,其安全更为重要。介绍了无线传感器网络路由协议分类及其脆弱性,分析了几种网络路由协议的攻击方法,阐述了网络路由协议的安全策略。 相似文献
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无线传感器网络(Wireless Sensor Networks,简称WSNs)作为一种新的获取信息的方式和处理模式,已成为通信领域的研究重点。而路由协议则是无线传感器网络当前的热点研究之一。目前,针对较为典型的分簇式路由协议LEACH路由协议的研究,是无线传感器网络目前研究的一个热点。介绍了无线传感器网络路由协议常见的攻击类型,并从路由安全的角度建议性的提出了一种对LEACH路由协议针对安全性的改进方案,并应用NS2仿真平台,对改进协议做了仿真并进行了性能分析。 相似文献
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基于ZigBee的无线传感器网络路由分析 总被引:3,自引:3,他引:0
为了研究基于ZigBee的无线传感器网络路由协议的性能优劣,在路由设计中有选择地改进。介绍了ZigBee无线传感器网络结构,分析了AODV、LEACH和ZigBee路由三种路由协议的基本原理,并使用NS2模拟仿真软件,在其他外部条件相同的情况下,分别对ZigBee路由和AODV进行模拟仿真,以能量消耗和网络生命周期为衡量网络性能的指标,仿真结果表明ZigBee路由在能耗上高于AODV,算法在节能上有待改进。指出了ZigBee路由算法在节能上的改进方法。 相似文献
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无线传感器网络路由协议的研究与展望 总被引:9,自引:0,他引:9
无线传感器网络是一种新兴的技术,已经引起国内外许多研究学者的关注。针对尚处于研究阶段的路由协议进行详细地分析与研究,首先根据无线传感器网络的分层模型和区别于其他无线网络的诸多特点,说明设计无线传感器网络路由协议的必要性;然后分析现有几种典型的路由协议,重点是分层路由协议的工作原理;最后指出在设计路由协议时应该考虑的关键因素,指明今后的研究方向。 相似文献
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Wireless sensor networks become very attractive in the research community, due to their applications in diverse fields such as military tracking, civilian applications and medical research, and more generally in systems of systems. Routing is an important issue in wireless sensor networks due to the use of computationally and resource limited sensor nodes. Any routing protocol designed for use in wireless sensor networks should be energy efficient and should increase the network lifetime. In this paper, we propose an efficient and highly reliable query-driven routing protocol for wireless sensor networks. Our protocol provides the best theoretical energy aware routes to reach any node in the network and routes the request and reply packets with a lightweight overhead. We perform an overall evaluation of our protocol through simulations with comparison to other routing protocols. The results demonstrate the efficiency of our protocol in terms of energy consumption, load balancing of routes, and network lifetime. 相似文献
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Liuguo Yin Changmian Wang Geir E. Øien 《International Journal of Wireless Information Networks》2009,16(3):154-164
The routing energy efficiency of a wireless sensor network is a crucial issue for the network lifetime. In this article, we propose MICRO (MInimum Cost Routing with Optimized data fusion), an energy-efficient routing protocol for event-driven dense wireless sensor networks. The proposed routing protocol is an improvement over the formerly proposed LEACH and PEGASIS protocol, which is designed to be implemented mainly with node computations rather than mainly with node communications. Moreover, in the routing computation the proposed scheme exploits a new cost function for energy balancing among sensor nodes, and uses an iterative scheme with optimized data fusions to compute the minimum-cost route for each event-detecting sensor node. Compared to the PEGASIS routing protocol, MICRO substantially improves the energy-efficiency of each route, by optimizing the trade-off between minimization of the total energy consumption of each route and the balancing of the energy state of each sensor node. It is demonstrated that the proposed protocol is able to outperform the LEACH and the PEGASIS protocols with respect to network lifetime by 100–300% and 10–100%, respectively. 相似文献
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分析了基于低功耗自适应分簇(LEACH)路由协议的无线传感网络(WSN)在不同拓扑形状下的生命周期,并改进了长方形拓扑形状的路由协议。进而针对WSN在某些场合能量有限、易受干扰和安全性差等缺点,在长方形区域中引入分布式光纤传感结构。将传感光纤铺设在环境复杂和外界电磁波干扰大的监测区域,从而提高整个传感网络的生命周期和可靠性。理论分析和仿真结果表明,改进的拓扑和协议在提高可靠性的同时,有效地延长了光WSN的生存时间,性能优于传统LEACH协议。 相似文献