2024年4月16日发(作者：)

摘 要

摘 要

无线传感器网络是集成了传感器技术、微电子技术、无线通信技术而形成的全新的

信息获取和处理技术，能够协作地实时感知、采集和处理网络覆盖区域内被监测对象的

信息。无线传感器网络在军事、医疗、工业、环境监测等方面都有着巨大的应用价值，

已成为计算机科学领域的一个活跃的研究分支。目前虽然已经取得了一定的研究成果，

但是在一些关键技术上，仍然存在着许多问题需要解决。本文针对如何在无线传感器网

络中应用数据融合技术节省网络能量进行研究。

本文介绍了应用在无线传感器网络中的数据融合技术的概念、特点和研究现状。并

由浅入深的讨论了，在基于事件驱动的网络环境下，应用数据融合技术的方法。

针对由单一事件驱动的网络环境，本文提出了一种求图中心点的分布式算法，并以

此为基础，提出了基于事件驱动的中心点融合算法。详细介绍了寻找中心点和建立融合

树的过程，分析了网络密度和事件相对汇聚节点位置对节能效果的影响。与最短路路由

算法进行比较，从数学推导和程序仿真两方面验证中心点融合算法的有效性。

针对多个互斥事件同时驱动的情况，本文引入群组意识网络结构的概念，改进中心

点融合算法中建立融合树部分的算法。并利用弱势父节点和强势父节点的概念为子节点

选择更“优”的父亲节点，达到节省网络能量的目的。

关键词：无线传感器网络；数据融合；事件驱动

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Abstract

Abstract

The wireless sensor network, which is integration of sensor techniques, MEMS

techniques and wireless communication techniques, is an innovative technique of information

acquisition and processing. It can sense, collect and process information of monitored object

in the covered place. Due to its wide application in military, medical, industrial and

environment monitoring, it has already become one of the active research branches of

computer science. A few achievements have been acquired, but on some key techniques, there

are also a lot of problems in need of resolution. This paper makes research on how to use

aggregation technique to save energy in wireless sensor network.

This paper introduces the conception, characteristic and actual research of aggregation in

WSN. And discuss the method of how to use aggregation technique based on the event driven

networks step by step.

In allusion to the single event driven networks, this paper researches on aggregation

strategy in wireless sensor networks, propose a distributed method for finding, the center of a

graph and propose a center aggregation algorithm that based on this distributed method. It

introduces the process of finding center and building aggregation tree, analyzes the impact of

network density and the relatively distance between the event and the sink on energy saving.

Compared with the shortest path algorithm, prove the validity of the center aggregation from

both mathematics consequence and program emulator.

In allusion to the condition that some mutually exclusive events driven at same time, this

paper introduce the conception of Group-Aware Network Configuration to improve the

algorithm of Building Aggregation Tree, which in the center aggregation algorithm. And try to

utilize the concept of weak father-node and strong father-node to switch a "better" parent, for

saving, energy.

Keywords: Wireless Sensor Network; data aggregation; event driven

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