单片机指纹密码锁设计与仿真  

Design and Simulation of Fingerprint Code Lock Based on MCU

作　　者：陈新芬[1] 金琦淳 张延丽[1] 梅娟[1] Chen Xinfen

机构地区：[1]无锡城市职业技术学院机电工程学院,江苏无锡214153

出　　处：《工业控制计算机》2021年第11期151-154,共4页Industrial Control Computer

基　　金：江苏省高等学校自然科学研究面上项目(18KJB520046);2020年校级“课程思政”改革项目(WXCUKCSZ202010);2020年校级教育教学改革研究课题(JG2019C)。

摘　　要：设计了一款基于51单片机的指纹密码锁,并实现Proteus软件仿真调试。电子锁设计采用指纹或者按键值两种形式来实现密码输入。硬件电路设计采用AT89C52为核心控制芯片,指纹输入采用AS608集成光学传感器模块,利用16个按键构成4×4矩阵键盘实现按键密码输入,显示屏采用液晶LCD1602显示。经过Proteus仿真运行,密码锁能够实现正确指纹或密码输入情况下,控制继电器开锁,液晶显示屏实时显示密码锁当前状态。出于密码锁安全性能考虑,软件设计中增加了错误密码输入次数超限,锁定密码锁,启动连续循环报警功能。Absrtact:This paper designs a fingerprint code lock based on 51 single chip microcomputer,and realized debugging and simulation on proteus.The device has two forms of password input:fingerprint or key value.The hardware design uses SCM AT89 C52 as the core control chip,the fingerprint input unit uses an integrated optical sensor module AS608,the key password input unit is realized by 4×4 matrix keyboard with 16 keystrokes,the display screen adopts liquid crystal LCD1602.After Proteus simulation,the code lock can realize the following function,when a correct fingerprint or a set of password figures is input,the code locking device can control the relay to unlock,and control the liquid crystal display screen display the current state of the code lock in real time.In view of the security performance of the code lock,the number of times the wrong password is entered reaches a certain number,the system will lock the code lock and start cycle alarm function.

关 键 词：单片机 密码锁 指纹输入 PROTEUS仿真 

分 类 号：TS914.211.7[轻工技术与工程] TP368.1[自动化与计算机技术—计算机系统结构]