基于51單片機電子鎖設計

摘   要

　　　隨著科技和人們的生活水平的提高，如何實現(xiàn)家庭防盜這一問題也變的尤其的突出，傳統(tǒng)機械鎖由于構(gòu)造簡單，被撬事件屢見不鮮；電子鎖由于其保密性高，使用靈活性好，安全系數(shù)高，受到了廣大用戶的青睞。

　　　本設計以單片機AT89C51作為密碼鎖監(jiān)控裝置的檢測和控制核心，分為主機控制和從機執(zhí)行機構(gòu)（本設重點介紹主機設計），實現(xiàn)鑰匙信息在主機上的初步認證注冊、密碼信息的加密、鑰匙丟失報廢等功能。根據(jù)51單片機之間的串行通信原理，這便于對密碼信息的隨機加密和保護。而且采用鍵盤輸入的電子密碼鎖具有較高的優(yōu)勢。采用數(shù)字信號編碼和二次調(diào)制方式，不僅可以實現(xiàn)多路信息的控制，提高信號傳輸?shù)目垢蓴_性，減少錯誤動作，而且功率消耗低；反應速度快、傳輸效率高、工作穩(wěn)定可靠等。軟件設計采用自上而下的模塊化設計思想，以使系統(tǒng)朝著分布式、小型化方向發(fā)展，增強系統(tǒng)的可擴展性和運行的穩(wěn)定性。測試結(jié)果表明，本系統(tǒng)各項功能已達到本設計的所有要求。

　　

關(guān)鍵詞:單片機；密碼鎖；單片機設計，電子鎖。

Electronic Lock Design with 51 Serires Single Chip Controller

Abstract

　　　

　　　Along with the exaltation of social science and the living level of people, how carry out the family to guard against theft, this problem also change particularly outstanding.Because of the simple construct of traditional machine lock,the affairs of theft is hackneyed.the electronics lock is safer because of its confidentiality, using the vivid good, the safe coefficient is high, being subjected to the large customer close.

　It can carry out the key information to register in the main on board initial attestation, the password information encrypt etc. Go to correspond by letter the principle according to the string between 51 machines, this is easy to encrypt and protect to the passwords information random. Adopt the numerical signal codes,not only can carry out many controls of the road information, raise the anti- interference that signal deliver, reduce the mistake action,but also the power consume is low， Respond quickly,the efficiency deliver is high, work stable credibility etc. The software design adoption the design thought from top to bottom, to make the system toward wear distribute type,turn to the direction development of small, strengthen the system and can expand the stability and circulate.Test the result enunciation, various functions of this system are already all request of this design.

　

keyword：singlechip;cryptogram lock;singlechip design; electronics lock.

目錄

1 緒論 1

1.1 引言 1

1.2 電子密碼鎖的背景 1

1.3 電子鎖設計的意義的本設計特點 2

2.系統(tǒng)設計 3

2.1系統(tǒng)總設計結(jié)構(gòu)圖 3

2.2．開鎖機構(gòu)設計 3

2.2.1主控芯片AT89C51單片機的簡介 4

3系統(tǒng)硬件設計 7

3.1鍵盤設計 7

3.2系統(tǒng)電路設計： 8

3.2.1 晶振時鐘電路 8

3.2.2復位電路設計 9

3.2.3串口引腳功能介紹 9

3.2.4 其它引腳 9

3.3電路圖的繪制 9

3.3.1 PROTEL 99 SE簡介： 12

3.4原器件采購 14

3.5電路焊接 14

4.軟件設計 17

4.1 系統(tǒng)軟件設計整體思路 17

4.2系統(tǒng)軟件設計流程圖 18

5 程序調(diào)試 19

5.1  程序調(diào)試用到的軟件及工具 19

5.2  KEIL C51簡介 19

　　5.3 調(diào)試過程 19

6 設計總結(jié)與展望 22

致  謝 23

參考文獻 24

附錄 25