基于單片機(jī)的電話(huà)自動(dòng)撥號(hào)報(bào)警器-展示頁(yè)
2025-06-15 22:37本頁(yè)面
【正文】 于操作。系統(tǒng)可分為五個(gè)模塊：?jiǎn)纹瑱C(jī)控制模塊， 報(bào)警信號(hào)輸入模塊，電話(huà)號(hào)碼存儲(chǔ)模塊，摘掛機(jī)控制模塊及DTMF收發(fā)模塊。本文首先介紹了電話(huà)機(jī)的概述和通話(huà)原理以及智能化電話(huà)報(bào)警器原理，在第三章中詳細(xì)介紹了智能自動(dòng)電話(huà)報(bào)警器的硬件單元電路設(shè)計(jì)，在第四章中簡(jiǎn)單介紹了智能化電話(huà)報(bào)警器的軟件設(shè)計(jì)以及在第四章中介紹了對(duì)系統(tǒng)軟硬件的調(diào)試等。為此，政府部門(mén)提倡采用高科技手段實(shí)現(xiàn)技術(shù)防范措施，在社會(huì)治安的現(xiàn)實(shí)需求和政府部門(mén)的推動(dòng)下，市場(chǎng)上國(guó)產(chǎn)和進(jìn)口的防火報(bào)警器應(yīng)運(yùn)而生。由此引起社會(huì)各界人士的普遍關(guān)注，有些部門(mén)和居民小區(qū)開(kāi)始派人白天夜間巡邏，并紛紛購(gòu)置防護(hù)鐵門(mén)、鐵欄桿等被動(dòng)防范措施，將主人裝在鐵籠子中以求安全。s activity and the district for living became more and more big,so the problem of safe also became more and more important . The alarm device which is simple and economic became needed for the family.In this design,AT89C51 microprocesser is adopted as the control unit,the smoke sensor is used to tell whether fire happens according to the detected smoke this density extend the one which is set in advance, the product will produce a alarm the alarm signal is sent to the microprocesser, the microprocesser will control the circuit to take off the telephone,and access the telephone number which is memoried in the CAT24C021 in advance.,then control the circuit of DTMF to dial the telephone ,the function of autodial is then finishend.This alarm device concludes a chip of HD7279 for entering ang displaying the telephone number,and a chip of MT8880 which is adoped as dialling and receiving the signal of DTMF,then via the audio power amplifier for enlarging the signal power.A spread field of science and technology such as SCM exploitation,programming,the design and apply of sensors,modern municate technology and control technology are involved in this research,ang are bined together organically. This will rise very important function for the study of cross.Key word： AT89C51 AutoDial Alarm DTMF目 錄第1章 前言 1第2章 電話(huà)自動(dòng)撥號(hào)報(bào)警器的總體設(shè)計(jì) 2 2 電話(huà)自動(dòng)撥號(hào)的主電路圖 3第3章 各功能模塊設(shè)計(jì) 5 5 模擬摘掛機(jī)電路模塊 6 顯示、鍵盤(pán)模塊 7 DTMF收發(fā)模塊 8 電話(huà)號(hào)碼存儲(chǔ)模塊 12 報(bào)警信號(hào)輸入 13第4章 電話(huà)自動(dòng)撥號(hào)報(bào)警器的軟件設(shè)計(jì) 154．1 系統(tǒng)軟件設(shè)計(jì) 15 主程序的設(shè)計(jì) 16第5 章 結(jié)束語(yǔ) 22致 謝 23參考文獻(xiàn) 23 基于單片機(jī)的自動(dòng)撥號(hào)報(bào)警器的設(shè)計(jì)學(xué)號(hào)： 作者： 指導(dǎo)教師： 第1章 前言改革開(kāi)放以來(lái)，在城市大發(fā)展的過(guò)程中，大量外地人口涌入城市，給社會(huì)治安帶來(lái)很大壓力。這對(duì)于交叉學(xué)科的研究將起到很大的作用。 本系統(tǒng)采用HD7279控制鍵盤(pán)及數(shù)碼管顯示，完成電話(huà)號(hào)碼的輸入和顯示功能，還采用了雙音多頻收發(fā)芯片MT8880來(lái)進(jìn)行編碼產(chǎn)生雙音頻信號(hào)，再通過(guò)音頻放大器LM386 來(lái)完成雙音頻信號(hào)的功率和幅度的放大。本設(shè)計(jì)就是以AT89C51單片機(jī)作為電話(huà)自動(dòng)撥號(hào)報(bào)警器的控制核心。畢 業(yè) 論 文（設(shè) 計(jì)） 屆 專(zhuān)業(yè) 班級(jí)題 目 基于單片機(jī)
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