家用電話加裝自撥號功能的防盜系統(tǒng)設(shè)計(jì)

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目 錄
第一章 緒論 1
1.1 設(shè)計(jì)背景 1
1.2 防盜報(bào)警系統(tǒng)的國內(nèi)外研究現(xiàn)狀 1
1.3 課題研究主要內(nèi)容 3
第二章 系統(tǒng)總體設(shè)計(jì) 4
2.1 家用自動電話防盜系統(tǒng)功能 4
2.2 智能報(bào)警系統(tǒng)總體方案設(shè)計(jì) 4
第三章 硬件電路設(shè)計(jì) 6
3.1 探測模塊概述 6
3.1.1 熱釋電紅外線防盜探測器 6
3.1.2 微波防盜探測器 7
3.1.3 溫度探測器 7
3.1.4 光電感煙探測器 7
3.1.5 防有害氣體探測器 8
3.1.6 無線門磁 8
3.2 探測模塊電路設(shè)計(jì) 8
3.3 無線信號發(fā)射與接收模塊的設(shè)計(jì) 9
3.3.1 無線信號發(fā)射電路的設(shè)計(jì) 10
3.3.2 無線信號接收電路的設(shè)計(jì) 11
3.4 遙控模塊的設(shè)計(jì) 12
3.5 用戶端報(bào)警主機(jī)的設(shè)計(jì) 12
3.5.1 AT89S51芯片介紹 12
3.5.2 存儲器電路的設(shè)計(jì) 13
3.5.3主機(jī)硬件電路的設(shè)計(jì) 13
3.6 自動撥號電路的設(shè)計(jì) 15
3.6.1 電路的組成與原理 15
3.6.2 撥號電路的設(shè)計(jì) 15
3.7 語音電路的設(shè)計(jì) 18
3.7.2 DTMF撥號電路的設(shè)計(jì) 18
3.8 電話接口電路的設(shè)計(jì) 19
3.9 斷電檢測電路的設(shè)計(jì) 20
3.10 密碼顯示電路的設(shè)計(jì) 21
3.11 鍵盤接口電路的設(shè)計(jì) 22
第四章 系統(tǒng)軟件設(shè)計(jì) 24
4.1 系統(tǒng)主程序設(shè)計(jì)流程圖 24
4.2 控制模塊的設(shè)計(jì) 25
4.3 信號音檢測與處理模塊的程序設(shè)計(jì) 27
4.4 DTMF撥號模塊的程序設(shè)計(jì) 29
4.5 語音模塊的程序設(shè)計(jì) 30
4.6 摘掛機(jī)模塊的程序設(shè)計(jì) 31
4.7 密碼及顯示模塊的程序設(shè)計(jì) 31
第五章 結(jié)語 33
致 謝 34
參考文獻(xiàn) 35

摘要 隨著社會經(jīng)濟(jì)的快速發(fā)展和人民生活水平的日益提高，社會越來越信息化，家庭生活也變得更加智能。經(jīng)濟(jì)的快速增長也帶來了相當(dāng)大的負(fù)面社會效應(yīng)，社會結(jié)構(gòu)、社會治安日趨復(fù)雜，社會矛盾開始凸顯。盜竊、入室搶劫等刑事案件也呈現(xiàn)出了增長趨勢，并且危害越來越嚴(yán)重。因而人們在其安全性方面提出了更高的要求。
本文設(shè)計(jì)了一種操作便捷、運(yùn)行安全的智能型無線報(bào)警系統(tǒng)。它具有防盜、防火災(zāi)等功能，能夠?qū)崿F(xiàn)信號的自動檢測以及電話自動報(bào)警。通過各種復(fù)合式探測器或者傳感器來對住宅內(nèi)的各種信號進(jìn)行自動監(jiān)測。然后該無線報(bào)警系統(tǒng)采用AT89S51單片機(jī)作為系統(tǒng)的中央控制單元，系統(tǒng)通過已有電話線路自動撥打戶主或相關(guān)部門的電話，發(fā)出語音求救信號。智能探測器在監(jiān)測到災(zāi)情時只輸出報(bào)警信號開關(guān)量，通過無線傳送方式發(fā)送給報(bào)警主機(jī)，主機(jī)微處理器會自動控制電話接口電路，實(shí)現(xiàn)模擬摘機(jī)，根據(jù)險(xiǎn)情類別，自動撥打電話。另外，該系統(tǒng)還具有密碼驗(yàn)證功能，通過鍵盤可輸入驗(yàn)證碼并可修改密碼；為了增強(qiáng)系統(tǒng)的安全性和穩(wěn)定性，配置了備用電源，并具有掉線和斷電自診斷功能。
本系統(tǒng)采用無線方式，克服以往有線式報(bào)警系統(tǒng)布線麻煩、困難，以及影響房屋美觀的缺陷，而且這種系統(tǒng)所采用的無線發(fā)射/接收電路解決了系統(tǒng)之間的無線信號相互干擾的問題，用戶在使用是只需要將各個系統(tǒng)的地址區(qū)別開來即可。系統(tǒng)采用模塊化的設(shè)計(jì)思想，易于擴(kuò)展。
該系統(tǒng)成本低、實(shí)用、可靠、功能靈活多樣，可廣泛應(yīng)用于銀行、倉庫和家庭等場所。
關(guān)鍵詞：智能報(bào)警系統(tǒng) 自動撥號 單片機(jī) DTMF信號 語音報(bào)警


The security system combination design of home landline
add the dial-up function
Abstract With the rapid development of social-economic and the day-by-day increment of people’s living standards, society is becoming more and more informative, family life is also becoming more intelligent. Rapid economic growth has brought considerable negative social effects. Social structure and security have become increasingly complex, social contradictions began to highlight. Theft, burglary and other criminal cases also revealed a trend of growth, and become more and more seriously. Therefore, people give more requirements at safety aspects.
　　This paper designs an intelligent wireless alarm system which is easy and reliable to operate. It has theft-proof and fireproof functions and also can realize automatic signal detection and telephone alarm. Automatic detection is to realize automatic inspection of various analog signals within the house by various combined type detector or sensor. Then the wireless alarm system adopts the AT89S51 as a system of central control unit, Automatic telephone alarm means the system dials the household or related department automatically by telephone line and sends help voice. When the intelligent detector detects any off normal signals it just outputs the switch quantity of the alarm signal, sent to the MCU by wireless transfer mode, and the MCU will control the interface module of telephone automatically and accomplish off hook. According the kind of danger, the dialing module will voluntarily dial the right number. Besides, this system also sets a password to verify, through the keyboard the user can input the code or modify the password. In order to build up the system security and stability, the system is equipped with standby power and has the function of self-diagnosis of outage and power-break.
This system uses wireless mode which overcomes many defects such as, it is difficult and troublesome to route the circuit through cable alarm system and impact the room's aesthetics. Wireless transmit/receive module is used to solve the problem of mutual interference between wireless signals, the user just need to distinguish the bit address of different signals. Modulation design makes the system easy ..