基于指紋識別技術(shù)的考勤系統(tǒng)的研究與設(shè)計(jì)


頁數(shù)：38 字?jǐn)?shù)：16759

基于指紋識別技術(shù)的指紋考勤機(jī)系統(tǒng)的設(shè)計(jì)
摘 要
指紋考勤技術(shù)的最大優(yōu)勢就在于其不可替代性。指紋考勤機(jī)根據(jù)每個(gè)人獨(dú)特的指紋特征來識別身份，從根本上杜絕了考勤管理中的代打卡現(xiàn)象，保證了企業(yè)考勤管理的公正性，嚴(yán)肅性和紀(jì)律性。
本文提出的指紋考勤機(jī)，具有將獨(dú)立的脫機(jī)指紋識別與聯(lián)網(wǎng)管理相結(jié)合的特點(diǎn)。一方面，一臺考勤機(jī)就可以完成考勤管理的全部過程，包括指紋采集、指紋比對、時(shí)間判斷、狀態(tài)判斷、考勤記錄等多種功能。全部考勤操作無需計(jì)算機(jī)的支持，單機(jī)就可以完成日?？记谶^程的所有功能。另一方面，利用485網(wǎng)絡(luò)把多臺指紋考勤機(jī)與管理計(jì)算機(jī)連接起來，通過管理機(jī)可以統(tǒng)一設(shè)置和管理所有聯(lián)網(wǎng)指紋考勤機(jī)的運(yùn)行參數(shù)、指紋數(shù)據(jù)以及考勤記錄。
本文簡要介紹了指紋識別技術(shù)的工作原理和分類，主要對指紋考勤機(jī)系統(tǒng)的總體設(shè)計(jì)、工作原理、硬件電路構(gòu)成與實(shí)現(xiàn)、軟件組成等作了比較詳細(xì)的闡述和分析，同時(shí)對指紋識別中的預(yù)處理過程進(jìn)行了詳細(xì)的闡述，并提出了自己的算法。

關(guān)鍵詞：指紋識別系統(tǒng),指紋考勤機(jī),指紋識別模塊,預(yù)處理
Abstract
The advantage of the attendance technology of fingerprint lies in its unsubstitutability. The fingerprint attendance machine discerns the identity according to everybodys unique fingerprint characteristic, stops attendance is it insteading other’s card phenomenon to take the place of in the management fundamentally , guarantee enterprise fairness , attendance of management, serious with the sense of discipline.

Fingerprint attendance machine that is this text put forward, has independent fingerprint recognition of taking off etc. and network characteristic combined together to manage. On one hand, a attendance machine can finish all course of attendance management, including fingerprint gathering, fingerprint judging , state judging , such many kinds of functions as the attendance is written down than right , time. All attendance operate the support which does not need the computer, the unit can finish all functions of the daily attendance course. On the other hand, utilize 485 networks to connect many sets of fingerprint attendance machine with management computer, can set up and manage operation parameter, fingerprint data and attendance record of all networking fingerprint attendance machines in unison through management machine.

This text has introduced the operation principle and classification of the recognition technology of fingerprint briefly, mainly to fingerprint attendance machine overall design, operation principle of system, hardware circuit form and realize, software is it make comparisons detailed exposition and analyse to make up, carried on detailed exposition to the pretreatment course in fingerprint recognition at the same time , have proposed authors own algorithm.

Keywords: The recognition system of fingerprint, fingerprint atten-dance machine, fingerprint recognition module, pretreatment目 錄1. 緒論 5
1.1 研制背景 5
1.2 指紋識別系統(tǒng) 6
1.2.1 指紋識別系統(tǒng)分類 6
1.2.2 指紋識別系統(tǒng)工作原理 7
1.3 本文的主要工作 11
2. 指紋考勤系統(tǒng)的設(shè)計(jì) 13
2.1 系統(tǒng)結(jié)構(gòu)框圖 13
2.2 指紋考勤機(jī)硬件設(shè)計(jì) 14
2.3 軟件功能設(shè)計(jì) 15
2.3.1 指紋考勤機(jī)的控制軟件 15
2.3.2 控制軟件流程框圖 16
2.4 系統(tǒng)硬件的實(shí)現(xiàn) 18
2.4.1 CPU控制處理器 18
2.4.2 指紋識別模塊 19
2.4.3 人機(jī)接口 19
2.4.4 大容量數(shù)據(jù)存儲器 19
2.4.5 實(shí)時(shí)時(shí)鐘 19
2.4.6 聯(lián)網(wǎng)通訊接口 19
2.5 指紋考勤機(jī)的特性 20
3. 指紋識別模塊 21
3.1 FDA01指紋識別模塊結(jié)構(gòu)組成 21
3.2 指紋圖像輸入 22
3.3 指紋識別模塊算法 24
3.3.1 預(yù)處理 24
3.3.2 指紋特征提取和比對 29
4. 基于指紋預(yù)處理算法的實(shí)驗(yàn)結(jié)果 31
4.1 指紋圖像的獲取 31
4.2 方向圖的獲取 31
4.3 方向圖的平滑 32
4.4 方向?yàn)V波器的設(shè)計(jì) 32
4.5 圖像的二值化 34
4.6 圖像的細(xì)化 34
5.結(jié)論 36
致謝 37
參考文獻(xiàn)： 38
1緒論
研制背景
隨著網(wǎng)絡(luò)與通信技術(shù)的飛速發(fā)展和人類物理與虛擬活動空間的不斷擴(kuò)大，現(xiàn)代社會對于人類自身身份識別的準(zhǔn)確性、安全性與實(shí)用性提出更高要求。傳統(tǒng)的身份識別方法已經(jīng)遠(yuǎn)遠(yuǎn)不能滿足這種要求，人類必須尋