單片機(jī)電鈴系統(tǒng)設(shè)計

電子機(jī)電論文編號:JD148  字?jǐn)?shù):12866,頁數(shù):28

目   錄
摘要.........................................................................7
關(guān)鍵詞 ......................................................................7
一、單片機(jī)的發(fā)展歷史.......................................................... 8
二、8051單片機(jī)電鈴系統(tǒng)硬件設(shè)計...............................................8
2.1 8051單片機(jī)的片內(nèi)資源......................................................9
2.1.1 8051單片機(jī)的片內(nèi)資源 ...................................................9
2.1.2、8051單片機(jī)片外總線結(jié)構(gòu) ...............................................11
2.1.3 控制部件 .............................................................13
2.2 8051單片機(jī)時鐘電路.......................................................13
2.3 8051單片機(jī)復(fù)位電路 .....................................................14
2.3.1 概述.................................................................14
2.3.2 復(fù)位電路的可靠性設(shè)計..................................................14
2.4 8051單片機(jī)鍵盤 .........................................................18
2.4.1 概述 ................................................................18
2.4.2 鍵盤系統(tǒng)設(shè)計.........................................................19
2.4.3鍵盤工作方式...........................................................20
2.4.4獨(dú)立式按鍵接口設(shè)計 .....................................................20
2.5 8051單片機(jī)峰鳴器........................................................21
三、8051單片機(jī)電鈴系統(tǒng)程序設(shè)計...............................................22
3.1、C語言概述 ............................................................22
3.2、程序模塊分析 .........................................................24
3.3、單片機(jī)電鈴系統(tǒng)程序.....................................................26
四、電路仿真 ...............................................................29
4.1 PROTEUS軟件介紹........................................................29
4.1.1 軟件概述 ............................................................29
4.1.2工作界面 .............................................................29
4.1.3圖形編輯窗口 ..........................................................30
4.2 PROTEUS仿真電路......................................................32
4.3、綜合論序.............................................................32
五、總結(jié) ............................................................. ..33
參考文獻(xiàn).................................................................34

摘要：
基于目前廣泛應(yīng)用的傳統(tǒng)電鈴噪音大，聲音刺耳，不符合人們追求�！本G色環(huán)�！鄙�活環(huán)境的要求，我采用電力電子技術(shù)設(shè)計了一種新型變流直流電鈴，可模擬人工打鈴效果，有效地減少了環(huán)境噪音污染，有很好的實用價值。在此基礎(chǔ)上，我們采用AT89C51單片機(jī)設(shè)計了一套智能自動打鈴系統(tǒng)，根據(jù)學(xué)校等單位的作息制度自動打鈴，從而使我們的設(shè)計更加完善。
該系統(tǒng)由三部分組成：程序控制部分、單片機(jī)硬件電路部分和電路仿真部分。+5V、+12V直流分別為各部分電路提供電源。變流直流電鈴部分主電路拓?fù)錇閿嗬m(xù)工作的BUCK電路，使得鈴聲節(jié)奏符合人的聽覺習(xí)慣。單片機(jī)部分由三個模塊組成：時鐘及其顯示模塊、響鈴定時數(shù)據(jù)表和打鈴控制模塊。實時時鐘隨時與打鈴定時數(shù)據(jù)表進(jìn)行比較，當(dāng)二者相吻合時，由P3.7腳給出響鈴信號，再由單穩(wěn)確定響鈴時間長短，驅(qū)動繼電器吸合．從而接通電鈴電路的主電源，完成自動定時響鈴任務(wù)。
關(guān)鍵詞
單片機(jī)、C語言、流程、仿真
Abstract:
Is big based on the present widespread application's traditional electric bell noise, the sound is grating, does not conform to the people to pursue.”The green environmental protection” living conditions' request, I used the electric power electronic technology to design one kind of new variable current d-c ringer, might simulate hits the bell effect artificially, reduced the environmental noise pollution effectively, had the very good use value. Based on this, we used at89C51 monolithic integrated circuit to design set of intelligences to hit the bell system automatically, according to unit's and so on school work and rest systems hit the bell automatically, thus caused our design to be more perfect. This system is composed of three parts: Programmed control part, monolithic integrated circuit hardware circuit part and circuit simulation part. +5V, the +12V cocurrent respectively provides the power source be various part of electric circuits. The variable current d-c ringer partial main circuit analysis situs to the intermittent work BUCK electric circuit, cause the ting rhythm to conform to person's sense of hearing custom. The monolithic integrated circuit part is composed of three modules: The clock and the display module, the bell fixed time data sheet and hits the bell control module. The real-time clock momentarily with hits the bell fixed time data sheet to carry on the comparison, when the two tally, gives the bell signal by the P3.7 foot, by Shan Wen determined again the bell time length, actuates the relay to attract gathers. Thus the connection electric bell electric circuit's main power source, completes the automatic fixed time bell task.
key word monolithic integrated circuit, C language, flow, simulation