智能门禁考勤系统设计

智能门禁考勤系统设计摘要在日常的工作和学习生活中，门禁和考勤是一项重要内容。门禁对于公司和学校的安全有着至关重要的作用，而出勤率直接影响着单位部门的风气问题。因为传统的门禁和考勤主要采用人工核查点名或者刷卡的方式，既降低了工作效率又有被他人冒名顶替的风险，所以传统的门禁考勤方式不适合于现代化的工作需求。而随着近几年科学技术的发展，通过指纹来解锁设备已经有了非常高的安全性。除此之外，相比于数字、字母等密码形式，指纹识别有着更高便捷性。因此被全球范围内大力推广，逐渐成为目前最常用的解锁方式之一。指纹作为每个人身体特征的一部分，有着如同DNA一样的每个人的指纹都是唯一的特点。且人的指纹一生都不会有太大的变化。因为其沟沟壑壑凹凸不平的图案，使得它他虽然只占据人体的极小一部分，但其蕴含的信息量却非常大。正因为指纹的这个特性，因而采用它作为生活中解锁的凭证，有着得天独厚的优势。本文设计了一个基于51单片机的智能门禁考勤系统。通过串口通信控制指纹模块来读取指纹图案，将指纹的特征信息记录在数据库内。解锁时指纹若匹配成功，便通过电机的运转来模拟门禁系统的开启。然后对打卡时间、缺勤次数、缺勤时间等进行记录。本设计有着稳定性高、运行速度快、成本低等特点，适合在大部分场景下使用。关键词：单片机：指纹识别：考勤系统：智能门禁DESIGN OF INTELLIGENT ACCESS CONTROLATTENDANCE SYSTEMAbstractIn daily work and study life,access control and attendance is an important content.Access control plays a vital role in the safety of companies and schools,and attendancedirectly affects the atmosphere of units and departments.Because of the traditional accesscontrol and attendance mainly use the way of manual check and roll call,which not onlyreduces the work efficiency,but also has the risk of being replaced by others.So,thetraditional access control and attendance method is not suitable for the needs of modern work.With the development of science and technology in recent years,unlocking the device throughfingerprint has a very high security.In addition,fingerprint identification has higherconvenience than numbers,letters and other password forms.Therefore,it has beenvigorously promoted all over the world.As a part of everyone's physical characteristics,fingerprints have the same characteristicsas DNA.Everyone's fingerprints are the only characteristics.And people's fingerprints willnot change much in their life.Because of its rugged patterns,it only occupies a small part ofthe human body,but it contains a very large amount of information.Because of thischaracteristic of fingerprint,it has unique advantages to use it as the unlocking Certificate inlife.This paper designs an intelligent access control and attendance system based on 51 singlechip microcomputer.Through serial communication,the fingerprint module is controlled toread the fingerprint pattern and record the characteristic information of the fingerprint in thedatabase.If the fingerprint matches successfully during unlocking,the opening of the accesscontrol system will be simulated through the operation of the motor.Then record the clock intime,absence times,absence time,etc.This design has the characteristics of high stability,fast running speed and low cost,and is suitable for use in most scenarios.Keywords:MCU;fingerprint identification;attendance system;intelligent access control