基于8051单片机的指纹锁的设计.docx

指纹锁专业：机械电子工程 学号：20080310060309学生姓名：李红伟 指导老师：罗智中摘要随着经济与科技的快速发展，传统的身份识别方式已经不能够满足日益增加的安全需求。而近几年来指纹识别技术的快速发展，使指纹锁的广泛应用成为可能。本论文是设计一种指纹锁，它能很好的完成指纹开锁，并具有指纹录入、指纹删除和应急机械开锁等功能。根据初始条件，选择好电磁铁、指纹开锁方式和机械开锁方式，以设计出相应的锁体壳、锁舌和机械开锁传动机构，进而确定电磁铁的安装位置，以完成机械系统的设计。根据MBF200固态指纹传感器的特点和8051单片机的特性设计出指纹采集模块、外部扩展存储器模块、开锁电路、键盘模块、LED显示模块和电源电路，从而完成电路系统的设计。根据任务书的要求和所设计的硬件电路来设计软件流程图，进而根据流程图来编辑程序。通过软件程序就可以使机械部分和电路部分联系在一起，进而实现对指纹锁的智能控制。本指纹锁利用AutoCAD2010设计出的机械部分的工程图，利用Protel 99 se设计出电路部分的电路图。诸多软件工具的使用为指纹锁的完整设计提供了帮助。本指纹锁设计所涉及的技术成熟，操作简单方便，实用性强，具有广泛的使用价值和应用前景。关键词：指纹锁；8051；MBF200；机械开锁Fingerprint lockAbstractWith therapid developmentofeconomy and technology, thetraditionalidentificationmethodshas been unableto meet the increasingsecurity needs.therapid developmentoffingerprint recognition technology In recent years, make it possible for fingerprint lockwide range ofapplications.This paper is to design afingerprint lock.It has the function of fingerprintlock, fingerprintInput,fingerprint deletion andemergency mechanicallock.According totheinitial conditions, choose a properelectromagnet, fingerprintlock mode，modeandmechanicallock mode，tothedesign ofthelockshelllatchandmechanicallock modedrive mechanism, to determinethe installation locationoftheelectromagnet, in order to completethedesignofmechanical systems. Based onthe characteristics ofMBF200solid-statefingerprintsensor andthe characteristics of8051 to design the fingerprint acquisition module、external expansionmemory modules, lock modecircuit, keyboard module, LED display modules andpower supplycircuits,in order to complete the circuitdesign. According to the requirementsofthe mission statementandthedesignof hardwarecircuitto design softwareflow chart, and then according totheflowchartto edit programs. The software programcanmakethe mechanical partsand circuitpartstogether,so as to realizetheintelligent controlofthefingerprint lock. This fingerprint lockuseAuto CAD 2010 to designthemechanical part of thedrawings, and use Protel 99se to designp