无线多媒体传感器网络开发及应用研究

发布时间：2018-03-10 14:08

本文选题：WMSNs　切入点：WSNs　出处：《北京建筑大学》2017年硕士论文　论文类型：学位论文

【摘要】：随着高新技术的迅猛发展,网络技术、传感器技术、视频处理技术突破瓶颈,实现了质的飞跃。无线传感器网络(Wireless Sensor Networks,WSNs)凭借其自组织性,无需人为值守,大范围部署,廉价等优势大量应用于工业、农业现场环境的监测,但随着监测环境的复杂化,人们不仅希望得到文本数据,更希望把监测环境中的视频、音频、图像等信息都直观地显示出来,无线多媒体传感器网络(Wireless Multimedia Sensor Networks,WMSNs)在这种需求下得到了飞速地发展。WMSNs相对于WSNs,提供了多媒体信息,使现场环境监测更加直观,并可以通过对所采集的多媒体信息进行图像处理和识别来提高监测系统的智能性,本文研究的系统主要应用于燃气应急处置现场的环境监测,考虑到实际现场情况,且采集甲烷等文本数据的节点与采集图像的节点布置位置不同,因此将WSNs和WMSNs同时应用于燃气抢修现场中,实现对燃气抢修作业的环境监测。本文设计的WSNs系统可以实现对泄露现场的燃气浓度、温湿度、风速风向等环境数据地实时监测,WMSNs系统可以实现图像、视频信息的采集,传感器网络系统架构均由前端采集节点、现场监测终端和远程监控中心三部分组成。前端采集节点主要负责数据信息的采集,现场监测终端用于对采集前端采集数据的集中显示、存储、报警,远程监控中心为指挥人员提供了实时监测的窗口,及时了解现场情况,并对数据进行存储,便于日后事故分析。燃气一旦发生泄漏,极有可能造成火灾、爆炸等严重的安全事故,为了减少二次事故的发生,本文提出将WMSNs用于燃气抢修现场的火灾预警。将多媒体传感器节点部署在燃气抢修现场,在现场监测终端即可实现对所采集图像的火灾识别分析,通过对比火焰图像特征,判断是否发生火灾和火势大小,对未及时发现的火情进行报警,及时疏散人员,减少事故损失,并为远程调度指挥人员提供决策依据。本文研究的WSNs和WMSNs均具有很强的工程应用价值,并且该系统已完成实验室组网测试实验,为下一步实际应用于工程现场奠定了基础。
[Abstract]:With the rapid development of high technology, network technology, sensor technology, video processing technology to break through the bottleneck and achieve a qualitative leap. The wireless sensor network (Wireless Sensor Networks, WSNs) by virtue of its self organization, without human duty, the deployment of a wide range of advantages such as cheap, widely used in industrial and agricultural field environment monitoring. But with the complex monitoring environment, people not only want the text data, hope that the environmental monitoring of video, audio, images and other information are displayed directly, wireless multimedia sensor networks (Wireless Multimedia Sensor Networks, WMSNs) in this demand has been the rapid development of.WMSNs relative to WSNs, provides multimedia information the field of environmental monitoring, more intuitive, and through image processing and recognition of multimedia information collected to improve the intelligent monitoring system, the This system is mainly used to study gas emergency environmental monitoring site, taking into account the actual situation, and the node location node and collecting image acquisition methane text data is different, so the WSNs and WMSNs also applied to the gas repair site, implement repair environment monitoring on gas. The WSNs system designed in this paper the gas concentration can be achieved, the leakage field of temperature and humidity, the real-time monitoring data of wind environment, WMSNs system can realize image, video information acquisition, sensor network system architecture is composed of front-end collection nodes, monitoring terminal and remote monitoring center is composed of three parts. The front-end acquisition node is mainly responsible for data collection. The field monitoring unit for centralized collection collects the data storage, display, alarm, remote monitoring center for command personnel provided in real time. The window, timely understanding of the situation, and storing the data, to facilitate analysis of the accident. After the gas leak is likely to cause fires, explosions and other serious accidents, in order to reduce the two accidents, this paper put forward the WMSNs repair for gas fire warning site. The multimedia sensor node deployment the gas in the repair site, in the analysis of fire recognition image acquisition can be realized through on-site monitoring terminal, comparing the characteristic of flame image to determine whether the fire and fire size, the alarm did not discover the fire, timely evacuation of personnel, reduce the loss of accidents, and provide decision-making basis for personnel essential. This article refers to the remote control WSNs and WMSNs have strong engineering application value, and the system has completed the laboratory testing experiment, the next step for the practical application in engineering field. Set the foundation.

【学位授予单位】：北京建筑大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP212.9;TN919.8

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