樓宇遙控門鎖設(shè)計

電氣自動化論文編號:ZD960    論文字?jǐn)?shù):18854,頁數(shù):48

目 錄
摘  要 II
Abstract III
1  緒 論 1
2  系統(tǒng)設(shè)計方案 3
2.1 方案論證 3
2.2 系統(tǒng)的總體設(shè)計 4
3  控制系統(tǒng)的硬件設(shè)計 6
3.1 單片機及其外圍電路 6
3.2 穩(wěn)壓電源電路 10
3.3 遙控發(fā)射電路 10
3.3.1 采用單片機串行通信原理 11
3.3.2 采用紅外線遙控原理 13
3.3.3 遙控發(fā)射電路 14
3.4 鍵盤接口電路 14
3.5 液晶顯示電路 16
3.6 外部存儲器電路 16
3.6.1 AT24C01介紹 16
3.6.2 AT24C01的電路 17
3.7 狀態(tài)指示與報警電路 18
3.8 單片機的復(fù)位和時鐘電路 19
3.8.1 單片機的復(fù)位電路 19
3.8.2 單片機的時鐘電路 19
3.9 門鎖電機驅(qū)動電路 19
3.10 硬件總體電路 20
3.11 系統(tǒng)硬件小結(jié) 21
4  系統(tǒng)軟件設(shè)計 22
4.1 系統(tǒng)軟件設(shè)計原則 22
4.2 系統(tǒng)主要程序 22
4.2.1 鍵盤主程序 22
4.2.2 遙控發(fā)射子程序 23
4.2.3 遙控接收子程序 24
4.2.4 初始密碼設(shè)置子程序 25
4.2.5鍵盤掃描子程序 26
4.2.6 密碼修改子程序 27
4.2.7按鍵有效顯示子程序 28
4.2.8系統(tǒng)主程序 28
4.3系統(tǒng)軟件小結(jié) 29
5  電路的仿真和調(diào)試 30
5.1 用PROTEUS軟件的電路仿真 30
5.2 系統(tǒng)的調(diào)試及注意事項 31
5.2.1 系統(tǒng)的調(diào)試及實現(xiàn)過程 31
5.2.2 注意事項 32
6 系統(tǒng)設(shè)計的技術(shù)難點及解決方案 33
6.1 系統(tǒng)硬件抗干擾措施 33
6.2 系統(tǒng)軟件抗干擾措施 34
6.3 本章小結(jié) 35
7  總 結(jié) 36
致 謝 37
參考文獻 38
附 錄 39

摘  要
 電子技術(shù)的飛速發(fā)展，給傳統(tǒng)鎖具帶來了巨大的變革。由于傳統(tǒng)鎖具存在著比較大的安全隱患，為了滿足人們對鎖具越來越多的要求，通過現(xiàn)代電子技術(shù)和機械技術(shù)相結(jié)合，以密碼來代替?zhèn)鹘y(tǒng)的金屬鑰匙的密碼鎖應(yīng)運而生。同時，設(shè)計出了一系列的防盜密碼鎖。這些密碼鎖不斷地向我們顯示了其安全性和方便性。
 通過紅外遙控技術(shù)和電子密碼鎖技術(shù)相結(jié)合的系統(tǒng)解決方案，設(shè)計一種比較簡易的紅外遙控密碼鎖。紅外遙控具有許多優(yōu)點，例如紅外發(fā)射裝置采用紅外二極管，遙控發(fā)射器易于小型化且價格低廉；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，增加遙控功能，提高信號傳輸?shù)目垢蓴_性，減少錯誤動作，且功率消耗低；紅外線不會向室外泄漏，不會產(chǎn)生信號串?dāng)_；反應(yīng)速度快，傳輸效率高，工作穩(wěn)定可靠等。這種紅遙控密碼鎖是以AT89C51單片機為控制核心，包含遙控發(fā)射器和遙控接收系統(tǒng)。對其進行詳細的硬件電路和軟件結(jié)構(gòu)設(shè)計，使得密碼鎖具有短距離無線遙控開鎖，按鍵指示，控制報警，密碼設(shè)置等功能，具有保密性好、安全可靠、成本低廉、連接方便、簡單易用、適用范圍廣等特點，而且特別適合家庭、賓館、倉庫、私家車庫等場所。

關(guān)鍵詞： 單片機，紅外遙控，電子密碼鎖，AT89C51
Abstract
With the electronic technology developing, the traditional lock has tremendous changes. Because there are relatively large traditional lock security risks, in order to satisfy the increasing demands on the lock, through modern electronic technology and mechanical technology combined with, a password to replace the traditional metal key lock came into being. And it designed a series of anti-theft lock. The locks constantly show us the security and convenience.
Through the infrared remote control technology and electronic code lock combined with, it designs a relatively simple infrared remote control lock. Infrared remote control has many advantages, such as infrared devices use infrared diode, so remote control transmitter is easy to miniaturize and inexpensive; by using digital signal coding and the second modulation type, it can achieve multiple messages control, increase remote control function, improve anti-interference of the signal transmission, reduce errors movements, and have low power consumption; infrared will not leak to the outside, and will not result in signal crosstalk; reaction speed, transmission efficiency, stable and reliable. Lock’s control center is AT89C51 microcontroller. With detailed design of hardware and software architecture, it makes lock have many functions ,such as unlock with the short-range wireless remote control, key directions, control alarm, password setting. It is confidential, safe and reliable, low cost, convenient connections, easy to use, for a wide range of characteristics, and particularly suitable for families, hotels, warehouses, private garage and other places.

Keywords: Microcontroller, Infrared Remote Control, Electronic locks，AT89C51