【正文】 ....................................................ii ABSTRACT .......................................................................................................................iii第 1 章 緒論 .......................................................................................................................1 課題來源及研究意義 ...................................................................................................1 報警器發(fā)展歷程和研究現(xiàn)狀 .....................................................................................1第 2 章 總體方案設計 ..................................................................................................2 報警器的功能要求........................................................................................................2 總體設計方案 .................................................................................................................2 雙音多頻收發(fā)電路........................................................................................................3 GSM 數(shù)字移動通信系統(tǒng) .............................................................................................4 單片機的軟件開發(fā)工具 C51 語言 ...........................................................................5第 3 章 功能塊設計 .......................................................................................................8 主機....................................................................................................................................8 AT89C51 特點...........................................................................................................8 主機硬件電路設計...................................................................................................8 主機軟件設計...........................................................................................................9 雙音多頻收發(fā)電路......................................................................................................10 MT8880 特點...........................................................................................................10 MT8880 與單片機接口電路設計...........................................................................13 雙音多頻收發(fā)電路的軟件設計.............................................................................14 語音電路 ........................................................................................................................16 ISD1420 特點 ..........................................................................................................16 ISD 1420 與單片機接口電路設計 .........................................................................18 語音電路的軟件設計.............................................................................................19 看門狗電路....................................................................................................................19 X5045 的特點 ..........................................................................................................20 X5045 與單片機的接口電路設計 ..........................................................................22 看門狗電路的軟件設計.........................................................................................22第 4 章 功能模塊設計 ................................................................................................23 移動通信模塊 ...............................................................................................................23 ZXGM 18 的特點 ....................................................................................................23 ZXGM 18 與單片機接口電路 ................................................................................26 移動通信模塊的軟件設計.....................................................................................27 警情采集電路 ...............................................................................................................29 DS2450 的特點 .......................................................................................................29 DS2450 與 AT89C51 的接口電路設計 .................................................................32 警情采集電路的軟件設計.....................................................................................32第 5 章 模擬仿真與軟件調(diào)試 ................................................................................34 軟件仿真 ........................................................................................................................36 硬件調(diào)試 ........................................................................................................................36 電源調(diào)試.................................................................................................................36 仿真器調(diào)試.............................................................................................................36 軟件調(diào)試 ........................................................................................................................36 模擬運行 ........................................................................................................................37第 6 章 總結(jié) .....................................................................................................................38 設計總結(jié) ........................................................................................................................38 存在的問題和展望......................................................................................................39參考文獻 .............................................................................................................................40致 謝 .............................................................................................................................42附錄 1 程序源代碼.......................................................................................................43 的初始化程序 .....................................................................................................43 初始化程序 ......................................................................................................43 .......