【正文】 nel remoteintelligent controller. The controller through telephone lines and the dualaudio signal into a binary signal decoded into AT89S52 SCM accordingly to achieve handling of household electric appliances to the remote control. The remote controller hardware, including: ringing detection circuit, analog circuit extraction hang up, doublecircuit audio codecs, voice prompt circuit and control circuits. The use of assembly language prepared by the system procedures. A ringing detection, automatic pick hang up, five password verification, voice prompts, select home appliances, and other functions, and eventually realize the control of household electric appliances. Can also be remote control of state for home appliances. The system easy to use, economical and practical, functional flexibility, not only can be used in home appliance control, but also widely used in other places of various types of equipment control. With the future of intelligent home appliances, work development direction. Key Words： Telephone remote control, DTMF decoder, SCM control, Household appliances control Thesis Type: Application I 目 錄 第 1 章 緒 論 ........................................................................................................................... 1 選題背景 ..................................................................................................................... 1 任務(wù)要求 ..................................................................................................................... 2 第 2 章 總體設(shè)計(jì) ..................................................................................................................... 3 第 3 章 系統(tǒng)設(shè)計(jì)分析 ............................................................................................................. 5 總體設(shè)計(jì)分析 .............................................................................................................. 5 硬件模塊 ..................................................................................................................... 6 振鈴音的檢測(cè) .................................................................................................... 6 自動(dòng)摘掛機(jī) ........................................................................................................ 6 控制電器 ............................................................................................................ 7 雙音頻解碼 ........................................................................................................ 7 雙音頻發(fā)送 ........................................................................................................ 7 實(shí)時(shí)時(shí)鐘 ............................................................................................................ 8 語(yǔ)音提示 ............................................................................................................ 9 軟件模塊 ...................................................................................................................... 9 信號(hào)音計(jì)數(shù) ........................................................................................................ 9 密碼檢測(cè) ............................................................................................................ 9 信號(hào)分析處理 .................................................................................................... 9 軟件定時(shí)功能 .................................................................................................. 10 第 4 章 硬件單元電路設(shè)計(jì) ....................................................................................................11 振鈴檢測(cè)電路 .............................................................................................................11 模擬摘掛機(jī)電路 ........................................................................................................ 13 雙音頻解碼電路 ........................................................................................................ 14 語(yǔ)音提示電路 ............................................................................................................ 16 實(shí)時(shí)時(shí)鐘電路 ............................................................................................................ 21 設(shè)備控制電路 ............................................................................................................ 21 第 5 章 軟件簡(jiǎn)介 ................................................................................................................... 23 密碼檢測(cè)部分 ............................................................................................................ 25 密碼修改部分 ............................................................................................................ 25 電器控制部分 ............................................................................................................ 26 振鈴計(jì)數(shù)部分 ............................................................................................................ 26 第 6 章 系統(tǒng)調(diào)試 ................................................................................................................... 28 整體調(diào)試 .................................................................................................................... 28 靜態(tài)調(diào)試 .......................................................................................................... 28 動(dòng)態(tài)調(diào)試 .......................................................................................................... 29 硬件單元電路 ............................................................................................................ 30 II 5V穩(wěn)壓電源 ................................................................................................. 30 振鈴音檢 測(cè) ...................................................................................................... 30 模擬摘掛機(jī) ...................................................................................................... 31 控制電器 ..............