嵌入式人脸识别门禁系统的研究

发布时间：2018-02-09 10:06

本文关键词： 人脸识别嵌入式技术门禁系统 Linux　出处：《河北工程大学》2012年硕士论文　论文类型：学位论文

【摘要】：当今社会是科学技术飞速发展、信息广泛传播的时代。人们在感受高科技进步的同时,还希望借助于科学技术拥有更舒适、更安全的生活环境。智能建筑的提出,使作为智能建筑中重要部分的门禁系统得到迅猛发展。传统的机械锁、单片机控制类的刷卡式等门禁系统由于要近距离接触,而且容易丢失、损坏和复制,已经不能满足人们生活的需要。如何更有效的防盗成为人们关注的问题。伴随计算机和模式识别技术发展起来的生物识别技术成为研制高性能安防系统的关键技术。人脸识别技术,是生物识别技术中的一种,是指通过对人脸特征的分析来进行身份认证的技术。人脸识别技术和嵌入式技术结合,生产出的门禁系统,在工业生产、公安司法、家居生活、公司管理和银行金库等方面得到了很好的应用,很好的满足了人们生活的需要。本文对基于人脸识别的门禁系统进行了研究和设计。在介绍国内外发展现状后,首先对门禁系统中人脸识别算法进行了系统的阐述,分析了实验室门禁系统的功能需求,进行了系统硬件总体设计,根据总体设计框图选择适当的芯片,绘制各模块的电路图。然后,概述了嵌入式操作系统,选择Linux作为该系统的操作系统,详细介绍了交叉编译环境的建立、引导程序和内核的裁剪、文件系统的生(?)的搭建了嵌入式软件平台。最后,对系统软件进行了总流程设计,描述了重要设备驱动程序的设计与移植过程。相对于用PC机或者简单的单片机控制芯片研发的门禁系统,该系统更加精简,具有智能化强、时效性好、易扩展和成本低等优点。
[Abstract]:Today's society is an era of rapid development of science and technology and wide dissemination of information. People, while feeling the progress of high technology, also hope to have a more comfortable and safer living environment with the aid of science and technology. The access control system, which is an important part of intelligent building, has been developed rapidly. The traditional mechanical lock, the swipe card type controlled by single chip computer and other access control systems are easy to be lost, damaged and duplicated due to close contact. It has not been able to meet the needs of people's life. How to prevent theft more effectively has become a problem that people pay attention to. With the development of computer and pattern recognition technology biometric technology has become the key technology to develop high performance security and defense system. Face recognition technology is one of biometrics technology, it is the technology of identity authentication through the analysis of face features. Face recognition technology and embedded technology, the production of access control system, in industrial production, Public security justice, home life, company management and bank treasury have been well applied to meet the needs of people. In this paper, the access control system based on face recognition is studied and designed. After introducing the present situation of the development at home and abroad, the algorithm of face recognition in the access control system is described systematically, and the functional requirements of the laboratory access control system are analyzed. The overall hardware design of the system is carried out. According to the overall design block diagram, the appropriate chip is selected, and the circuit diagram of each module is drawn. Then, the embedded operating system is summarized, and Linux is selected as the operating system of the system. This paper introduces in detail the establishment of cross-compiling environment, the cutting of boot program and kernel, and the creation of file system. The embedded software platform is built. Finally, the main flow chart of the system software is designed, and the process of designing and transplanting the important device driver is described. Compared with the access control system developed by PC or single chip microcomputer, the system is more simple, intelligent, time-efficient, easy to expand and low cost.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP368.1;TP391.41

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