基于嵌入式Linux的网络监控系统

发布时间：2018-02-25 10:05

本文关键词： 网络监控嵌入式Linux CGI 嵌入式Web服务　出处：《吉林大学》2012年硕士论文　论文类型：学位论文

【摘要】：随着嵌入式技术、通信技术、网络技术的飞速发展，，数字化、信息化和智能化正日益融入人们的生活之中。人们在生活水平不断提高改善的基础上，对生活质量提出了更高的要求，智能型住宅就是在这一背景下产生的。当前以节能环保理念为基础的智能型住宅已经成为发展的趋势，而其中家庭的安全问题则是人们关注的一个焦点，逐渐成为人们生活中的一个重要组成部分。本文以嵌入式微处理器和嵌入式Linux系统为基础，主要是研究网络监控系统在智能型住宅中的应用，以达到为用户提供一种成本低廉、灵活、高效和安全的生活环境。本系统分析了用户的需求特点采用模块化设计，以ARM920T处理器为硬件核心，以Linux内核V2.6为软件核心设计实现了对网络摄像机图像的采集、处理，以及图像文件的本地存储，通过嵌入式Web服务器在智能终端实现对实时图像的查看和历史图像的回放。设计采用B/S模式三层架构服务端主要是利用摄像头提供的通信协议和外部API接口，基于多线程技术将来自网络摄像机的移动监测图像数据采集到本地，在图像压缩方面，分析了JPEG标准的压缩原理，实现了图像数据的JPEG压缩。同时针对嵌入式设备中资源和处理能力受限的问题，采用基于ajax和CGI的嵌入式服务器软件结构，提供与服务器的异步通信能力，并结合JavaScript和CSS来为用户提供接近本地桌面应用的、易用的和丰富动态的Web用户接口界面。本系统按照预定的目标设计开发了这个网络监控系统，提供了一种可行的实现方案将嵌入式技术、网络通信技术及智能监控技术结合，构建了一个实用的、低成本的、扩展性强的灵活高效的系统。整个系统采用模块化设计，保证了封闭和开放与效率的平衡，通过模块的选择和组合可以满足不同用户定制的需求，也有利于系统的重用和升级。通过对系统的全面测试，证明了本系统运行稳定可靠、操作方便，在实际使用过程中得到客户的良好评价。结果表明本系统的设计切实可行，对网络监控在家庭领域的广泛应用有着非常积极的意义。
[Abstract]:With the rapid development of embedded technology, communication technology and network technology, digitization, information and intelligence are increasingly integrated into people's lives. It is against this background that intelligent housing has been created. At present, intelligent housing based on the idea of energy saving and environmental protection has become a trend of development. The security of family is the focus of attention, and gradually become an important part of people's life. This paper is based on embedded microprocessor and embedded Linux system. This paper mainly studies the application of network monitoring system in intelligent housing, in order to provide a low cost, flexible, efficient and safe living environment for users. This system has analyzed the characteristic of the user's demand adopts the modularization design, takes the ARM920T processor as the hardware core, takes the Linux kernel V2.6 as the software core, has realized the collection, the processing to the network camera image, as well as the local storage of the image file. Through embedded Web server, real-time image viewing and historical image playback are realized in intelligent terminal. The design of three-layer architecture server based on B / S mode is mainly based on the communication protocol provided by camera and external API interface. Based on multithreading technology, the moving monitor image data from the network camera is collected to the local area. In the aspect of image compression, the compression principle of JPEG standard is analyzed. The JPEG compression of image data is realized. At the same time, aiming at the problem of limited resource and processing ability in embedded devices, embedded server software structure based on ajax and CGI is adopted to provide asynchronous communication ability with the server. Combined with JavaScript and CSS to provide users with close to local desktop applications, easy to use and rich dynamic Web user interface interface. This system has designed and developed the network monitoring system according to the predetermined goal, provided a feasible realization plan, which combines the embedded technology, the network communication technology and the intelligent monitoring technology, has constructed a practical, low cost, A flexible and efficient system with strong expansibility. The whole system adopts modular design, which ensures the balance between closure and openness and efficiency. Through the choice and combination of modules, it can meet the needs of different users. Through the comprehensive test of the system, it is proved that the system runs stably and reliably, and it is easy to operate, and gets good evaluation from customers in the process of practical use. The result shows that the design of the system is feasible. It has a very positive significance for the wide application of network monitoring in the field of home.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP277;TP368.1

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