單片機(jī)呼叫系統(tǒng)的設(shè)計(jì)

電子機(jī)電論文編號(hào):JD165 字?jǐn)?shù):23391,頁(yè)數(shù):45

目    錄
引言 …………………………………………………………………………………………1
前言…………………………………………………………………………………………2
1  方案論證…………………………………………………………………………………3
2  系統(tǒng)各模塊……………………………………………………………………………4
2.1 呼叫監(jiān)測(cè)部分……………………………………………………………………………4
2.2 模擬/數(shù)字轉(zhuǎn)換（ADC）部分……………………………………………………………5
2.2.1ADC0809主要性能……………………………………………………………………6
2.2.2A/D轉(zhuǎn)換器的主要技術(shù)參數(shù)…………………………………………………………8
2.3顯示部分…………………………………………………………………………………8
2.3.1LED共陽(yáng)極數(shù)碼管……………………………………………………………………8
2.3.2LED驅(qū)動(dòng)電路的設(shè)計(jì)…………………………………………………………………10
2.4 主控電路CPU部分…………………………………………………………………13
2.4.1單片機(jī)的內(nèi)部結(jié)構(gòu)……………………………………………………………………14
2.4.2單片機(jī)應(yīng)用系統(tǒng)的構(gòu)成………………………………………………………………14
2.4.3AT89S52的特性及引腳說明…………………………………………………………15
2.4.4AT89S52的基本操作…………………………………………………………………17
2.4.5單片機(jī)與ADC0809 接口的問題……………………………………………………19
3  軟件設(shè)計(jì)………………………………………………………………………………20
3.1 程序設(shè)計(jì)過程及流程圖………………………………………………………………20
3.2 運(yùn)算器…………………………………………………………………………………21
3.3 控制器…………………………………………………………………………………22
3.4 存儲(chǔ)器…………………………………………………………………………………22
3.5 單片機(jī)編程語(yǔ)言介紹…………………………………………………………………24
4  設(shè)計(jì)所用軟件………………………………………………………………………26
4.1 Protel 99SE的主要功能………………………………………………………………26
4.2 軟件設(shè)計(jì)過程…………………………………………………………………………28
5   調(diào)試制作及安裝……………………………………………………………………28
5.1 PCB板的制作…………………………………………………………………………29
5.2 呼叫指示器的安裝……………………………………………………………………30
6   結(jié)論……………………………………………………………………………………31
謝辭…………………………………………………………………………………………32
參考文獻(xiàn)……………………………………………………………………………………33
附錄…………………………………………………………………………………………34

摘  要

在大型機(jī)關(guān)，旅館和醫(yī)院中，常需要有一種內(nèi)部聯(lián)絡(luò)和呼叫系統(tǒng)，以便在旅客（病員）和服務(wù)人員之間建立必要的聯(lián)絡(luò)。而一般的內(nèi)部通話系統(tǒng)都比較少，經(jīng)常使用的是比較便宜的呼叫指示。這種呼叫指示系統(tǒng)在提示的同時(shí)，能夠用視頻顯示各呼叫的號(hào)碼（房間號(hào)或床位號(hào)）。其另外優(yōu)點(diǎn)是：由微控制器組成的呼叫指示系統(tǒng)結(jié)構(gòu)則相對(duì)簡(jiǎn)單，成本低，操作也很方便。
本課題介紹了一種單片機(jī)呼叫系統(tǒng)的設(shè)計(jì)方案。該呼叫系統(tǒng)采用AT89s52單片機(jī)作為編程控制器，此單片機(jī)適用于機(jī)、電、儀一體化的智能產(chǎn)品，具有精度高、低功耗、控制能力、小巧等優(yōu)點(diǎn)。并且采用ADC0809將模擬電壓轉(zhuǎn)換為數(shù)字形式，利用程序?qū)�單片機(jī)設(shè)置為外中斷并且計(jì)算中斷的時(shí)間。P0口分別與數(shù)碼管的段碼相連，P2口分別與數(shù)碼管的位碼相連。

關(guān)鍵詞：?jiǎn)纹瑱C(jī)；程序；數(shù)碼管；ADC0809；AT89S52；呼叫系統(tǒng)

Abstract

In the large-scale organ , in the hotel and hospital , often need a kind of inside and get in touch with and call out the system, in order to set up essential contact between passenger (patient ) and attendants. And general inside conversation system little, it uses to be cheap call instruct these kind of call that this text recommend point out the system is while briefing on often, can show the number that is each called out with the video (room number or berth number). Its other advantages are: This kind is pointed out the systematic structure is relatively simple by call that little controller makes up , with low costs, operation is very convenient too.
This subject has recommended a kind of one-chip computer to call out the systematic design plan . Is it call out system adopt AT89s52 one-chip computer as programming controller , one-chip computer this suitable for plane , electricity , appearance integrated intellectual products to it's time, advantage of have high , low consumption of precision , control ability , small and exquisiting etc.. And adopt ADC0809 to imitate the voltage to change into the digital form . Establishes using the procedure to the monolithic integrated circuit for outside severs and the computation severance time. P0 port separately with digital tubesection code connected, the P2 port is separately connected with the digital tube position code.

Key words:  microcontroller computer；program；thenumber managing；
ADC0809；AT89S51；Calling system