摘要随着信息化程度的不断提升，人们对人事考勤的要求越来越高。一些传统的考 勤方式如纸卡签到类和 IC 卡类签到方式都会带来一些不公平不合理的现象。本文通过研究当前人们对人事考勤的需求，设计了一种基于单片机的指纹考勤 系统。该系统主要由 STC12C5A60S2 单片机，指纹采集模块 FPM-10A，语音播报模 块 HSC-U003，无线传输模块 NRF24L01，LCD 液晶显示屏等模块组成。本文设计 的考勤系统共采用两块单片机作为主控芯片，第一块芯片通过指令控制指纹模块进 行指纹的录入，识别和删除；同时在操作的过程中控制语音模块对具体内容进行语 音播报；在识别模式下，识别到指纹后把指纹编号通过无线模块发送到另一块单片 机上。第二块单片机把无线模块接收到的指纹编号显示在液晶显示屏上。

指纹识别技术运用在人事考勤中具有得天独厚的优势，可靠性和唯一性是这项 技术最突出的特点。利用指纹作为考勤信息的载体能够消除考勤中存在的作假现 象，并且有效的消除人情因素，体现出考勤系统的公平性。83353

毕业论文关键词：单片机；考勤；指纹识别；无线

Abstract With the continuous improvement of information,people on the attendance of personnel requirements are getting higher and higher。 Some traditional methods such as attendance card and IC card will bring some unfair and unreasonable phenomenon。

This paper through the study of the current needs of personnel attendance,A fingerprint attendance checking system based on microcomputer is designed。The system is mainly composed of STC12C5A60S2 microcontroller, fingerprint acquisition module FPM-10A, voice broadcast module HSC-U003, wireless transmission module NRF24L01, LCD module and other modules。 The attendance system designed in this paper adopts two microcomputers as the main control chip,The first chip fingerprint module through the instruction to control the input, identify and delete; At the same time in the operation of the process of controlling the voice module for the specific content of voice broadcast; In recognition mode, After the fingerprint is recognized, the fingerprint number is sent to the other microcomputer through the wireless module。The second microcomputer to the wireless module to receive the fingerprint number displayed on the LCD screen。

Fingerprint identification technology used in personnel attendance has a unique advantage,His reliability and uniqueness is the most prominent feature of this technology。The use of fingerprint attendance information as a carrier to eliminate the false phenomenon existing in attendance and effective elimination of human factors,Reflects the fairness of attendance system。

Key words: microcomputer; attendance; fingerprint identification; wireless

目 录

第一章 绪论 1

1。1  研究背景及其意义 1

1。2  指纹识别技术国内外发展现状 1

1。2。1 国外指纹技术研究现状 1

1。2。2 国内指纹技术研究现状 2

1。3  指纹识别技术介绍 3

1。3。1 指纹的概念和特征 3

1。3。2 自动指纹识别技术原理 3

1。4  本文研究的主要内容 3

第二章 设计方案论证 4

2。1  功能需求 4

2。2  方案论证 4

2。2。1 主控芯片的选择