【正文】 it signals through the SCM system after processing convenience and PC munication, to facilitate unified user management. The design includes two parts of hardware and software design.. The separation of monitoring host and monitoring unit, the use of wireless data transmission, to control the device chip AT89C52 host puter, use LED as the digital display, horn, infrared probe circuit, high brightness LED as the alarm device, and supplemented some peripheral devices, to finish the design of alarm system with C language scm. The whole system is under the control of the system software work. The final realization of antitheft humanized alarm. Key words: Single chip microputer， wireless transmission， pyroelectric sensor 目錄 第 1 章 緒論 ......................................................................................................................... 1 概述 ............................................................................................................................. 1 防盜系統(tǒng)發(fā)展歷史及分類 ......................................................................................... 1 防盜報(bào)警系統(tǒng)的發(fā)展歷程 .................................................................................. 1 防盜報(bào)警的分類 .................................................................................................. 2 國(guó)內(nèi)外研究情況 .................................................................................................. 3 目前存在的問題 .................................................................................................. 3 防盜報(bào)警系統(tǒng)應(yīng)用情況及發(fā)展趨勢(shì) .................................................................. 4 第 2 章 總體設(shè)計(jì)方案 ......................................................................................................... 6 設(shè)計(jì)思路 ..................................................................................................................... 6 系統(tǒng)方案論證與擬定 ................................................................................................. 6 系統(tǒng)組成 ..................................................................................................................... 6 第 3 章 各單元硬件電路 ..................................................................................................... 8 控制器 — 單片機(jī) ......................................................................................................... 8 單片機(jī)的歷史 ...................................................................................................... 8 單片機(jī)的應(yīng)用領(lǐng)域 .............................................................................................. 8 單片機(jī) AT89C52 ............................................................................................... 10 無(wú)線發(fā)送、接收電路設(shè)計(jì) ....................................................................................... 13 PT2272 芯片介紹 ............................................................................................... 13 PT2262 芯片介紹 ............................................................................................... 14 無(wú)線發(fā)射電路 .................................................................................................... 16 無(wú)線接收電路 .................................................................................................... 17 檢測(cè)與數(shù)據(jù)采集電路設(shè)計(jì) ....................................................................................... 19 熱釋電人體紅外傳感器 .................................................................................... 19 BISS0001 芯片 ................................................................................................... 21 系統(tǒng)設(shè)置及顯示電路 ............................................................................................... 22 LED 顯示器及其工作原理 ................................................................................ 22 LED 數(shù)碼管 顯示與單片 機(jī) I/O 接口設(shè)計(jì) ........................................................ 24 系統(tǒng)設(shè)置電路 .................................................................................................... 25 報(bào)警電路設(shè)計(jì) ........................................................................................................... 26 音 頻功率放大器 LM386 ................................................................................... 26 監(jiān)控指示電路 .................................................................................................... 27 電源設(shè)計(jì) ................................................................................................................... 27 主機(jī)電源 ............................................................................................................ 27 分機(jī)電源 ............................................................................................................ 29 下載器 ....................................................................................................................... 30 第 4 章 電路原理圖的設(shè)計(jì) ............................................................................................... 32 PROTEL 99SE 簡(jiǎn)介 ..................................................................................................... 32 原理圖設(shè)計(jì) ............................................................................................................... 33 系統(tǒng)電氣原理圖 ....................................................................................................... 34 第 5 章 系統(tǒng)程序設(shè)計(jì) ....................................................................................................... 35 編程軟件 KEIL C51 ................................................................................................... 35 C51 的優(yōu)點(diǎn) ......................................................................................................... 35 KEIL C51 程序開發(fā) ............................................................................................ 35 主機(jī)系統(tǒng)程序流程圖 .....................................................................................