基于單片機(jī)的家用電器電話遠(yuǎn)程控制系統(tǒng)

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本文設(shè)計的是一種基于AT89C51單片機(jī)的遠(yuǎn)程電話控制系統(tǒng)。該系統(tǒng)是以AT89C51為核心、利用現(xiàn)有的個人通信終端,實現(xiàn)基于PLMN(陸基移動通信網(wǎng))和PSTN(公用電話交換網(wǎng))的電話遠(yuǎn)程控制系統(tǒng)。電話遠(yuǎn)程控制系統(tǒng)(ITRCS),以CCITT（國際電報電話咨詢委員會）及我國標(biāo)準(zhǔn)共同規(guī)定的部分標(biāo)準(zhǔn)程控交換信令(DTMF雙音多頻信號,振鈴信號,回鈴音信號等)作為系統(tǒng)控制命令,以PLMN與PSTN通信網(wǎng)作為傳輸介質(zhì),使用者可以在遠(yuǎn)端利用固定電話或移動電話發(fā)送DTMF雙音多頻信號,實現(xiàn)對近端電器設(shè)備的實時遠(yuǎn)程控制。該電話遠(yuǎn)程控制系統(tǒng)不需進(jìn)行專門的布線,不占用無線電頻率資源,從而可避免電磁污染；且通過嵌入式的智能語音提示,突出的語音提示功能和密碼控制系統(tǒng),可使操作者根據(jù)各種提示音及時了解受控對象的有關(guān)信息。還可通過發(fā)出語音命令用電話遠(yuǎn)程控制多個受控對象,用戶可以查詢其狀態(tài),提供密碼處理功能,只有輸入正確的密碼才能控制家電,從而提高了安全性。該系統(tǒng)設(shè)計實用，功能靈活多樣，可靠性高，操作方便，可以廣泛地應(yīng)用于家庭或者其它場所的智能控制。

關(guān)鍵詞　AT89C51；遠(yuǎn)程電話控制；DTMF；智能家電
The Telephone Remote Control System for Household Electronic Appliance Base on The Microcontroller
Abstract
The article designed the remote telephone control system which based on microcontroller AT89C51. Basing on the PLMN and PSTN, the system which uses the core controller Single-chip microcomputer AT89C51 realizes long-distance control household appliances. The telephone control system (ITRCS) which uses the telephone net convert and voice information receives DTMF code from the telephone net, and interpret the code, the core controller controls the state of household appliances responded to the interpretation. Long distance control of telephone does not require special wires distribution and does not take up wireless frequency resources. Electro magnetic pollution can thus be avoided. The designing of a system of long－distance control based on sound processing technology and DTMF decoding technology is presented in this paper. By using sound commands of sound recognition technology, this system realizes its control of household electrical appliances through telephone networks and so realizes the intelligently control of them in residence. The embedded and intelligent sound indication, its outstanding sound function of prompt and its code control system enable the operators to timely obtain the relative information of the controlled objects through indicated sounds. The system can use telephone to control many household electrical appliances in long distance through uttering sound commands and provides the code safeguard function. Only through inputting the correct password to control them, the users can control the condition of household electrical equipment, So the system security can be improved. This system is practical, and the function is flexible, and the operation is convenient with high reliability, which can be used extensive in various kinds of control equipment to home and others field.

Keywords　AT89C51；Telephone remote control；DTMF；Household appliances


目錄
摘要... I
Abstract II

第1章 緒論... 1
1.1 本課題研究的背景... 1
1.2 遠(yuǎn)程控制的內(nèi)容... 2
第2章 系統(tǒng)設(shè)計可行性分析... 4
2.1 總體設(shè)計分析... 4
2.1.1 系統(tǒng)總體設(shè)計分析... 5
2.1.2 單片機(jī)簡介... 5
2.2 硬件模塊... 6
2.2.1 模擬摘機(jī)電路... 7
2.2.2 振鈴檢測電路... 7
2.2.3 控制部分電路... 7
2.2.4 雙音解碼電路... 7
2.2.5 語音提示電路... 8
2.3 軟件模塊... 8
2.3.1 信號音檢測... 9
2.3.2 密碼檢測... 9
2.3.3 信號分析處理... 9
2.4 本章小結(jié)... 9
第3章 硬件單元電路設(shè)計... 10
3.1 振鈴檢測電路... 10
3.2 模擬摘掛機(jī)電路... 11
3.3 雙音頻解碼電路... 12
3.4 信號音提示電路... 15
3.5 電器控制電路... 17
3.6 本章小結(jié)... 18
第4章 軟件設(shè)計... 19
4.1 單片機(jī)初始化... 19
4.2 振鈴計數(shù)模塊... 20
4.3 語音提示模塊... 21
4.4 密碼檢測模塊... 23
4.5 密碼修改模塊... 24
4.6 控制電器模塊... 25
4.7 本章小結(jié)... 27
第5章 系統(tǒng)應(yīng)用... 28
5.1 系統(tǒng)的應(yīng)用前景... 28
5.2 系統(tǒng)使用說明... 28
5.3 系統(tǒng)功能擴(kuò)展... 29
結(jié)論... 31
致謝... 32
參考文獻(xiàn)... 33
附錄A. 34
附錄B. 34
附錄C. 34
附錄D. 34