【正文】 ware design in two parts, hardware section includes infrared sensor circuit, MCU control circuit to drive the implementation of the alarm circuit, LED control circuit and other ponents. The whole system is working under the control of the system software. Key words: SCM。它采用的元件是熱釋電紅外傳感器，它的制作簡單、成本低、安裝比較方便，而且防盜性能比較穩(wěn)定，靈 敏度高、安全可靠、抗干擾能力強(qiáng)。該報(bào)警器成本較低，易于安裝可靠性和穩(wěn)定性高，并且在功能上具有良好的可擴(kuò)展性，便于市場應(yīng)用與推廣。 infrared sensor； Wireless alarm； data collection 南昌工程學(xué)院本科畢業(yè)論文 III 目 錄 摘 要 ..............................................................I Abstract ......................................................................................................................... II 目 錄 ....................................................................................................................... III 第一章 緒論 ................................................................................................................. 1 選題背景 ............................................................................................................. 1 報(bào)警系統(tǒng)發(fā)展的歷史和現(xiàn)狀 ............................................................................. 1 家庭防盜報(bào)警系統(tǒng)未來發(fā)展趨勢 ...................................................................... 3 設(shè)計(jì) 任務(wù)與要求 ................................................................................................. 5 第二章 主要元器件選擇與介紹 ........................................................................... 6 傳感器介紹 ......................................................................................................... 6 熱釋電紅外線傳感器簡單介紹 .............................................................. 6 熱釋電紅外傳感器結(jié)構(gòu) .......................................................................... 6 熱釋電效應(yīng) .............................................................................................. 7 菲涅爾透鏡及其基本原理 ...................................................................... 7 熱釋電紅外傳感器工作原理 .................................................................. 8 熱釋電紅外傳感器引腳圖介紹 .............................................................. 9 AT89C51 單片機(jī)簡單概述 ............................................................................... 10 AT89C51 單片機(jī)的結(jié)構(gòu) ........................................................................ 10 AT89C51 管腳說明 ................................................................................ 11 第三章 系統(tǒng)硬件設(shè)計(jì) ............................................................................................14 整體設(shè)計(jì)方案 ................................................................................................... 14 信號(hào)放大電路 ................................................................................................... 14 主要電路元件介紹 ................................................................................ 14 實(shí)現(xiàn)功能 ................................................................................................ 15 原理分析 ................................................................................................ 15 比較電路 ........................................................................................................... 16 南昌工程學(xué)院本科畢業(yè)論 文 IV 實(shí)現(xiàn)功能 ................................................................................................. 16 原理分析 ................................................................................................. 17 聲音報(bào)警電路 .................................................................................................... 18 主要電路元件介紹 ................................................................................ 18 實(shí)現(xiàn)功能 ................................................................................................ 18 原理分析 ................................................................................................ 19 燈光警示電路 ................................................................................................... 19 主要電路元件介紹 ................................................................................ 19 實(shí)現(xiàn)功能 ................................................................................................ 20 原理分析 ................................................................................................ 20 顯示電路 .......................................................................................................... 21 主要電路元件介紹 ................................................................................ 21 實(shí)現(xiàn)功能 ................................................................................................ 22 原理分析 ................................................................................................ 22 供電電源電路 ................................................................................................... 22 主要電路元件介紹 ................................................................................ 22 實(shí)現(xiàn)功能 ................................................................................................ 23 原理分析 ................................................................................................ 23 單片機(jī)最小系統(tǒng) .............................................................................................. 24 主要電路元件介紹 ................................................................................ 24 實(shí)現(xiàn)功能 ................................................................................................ 24 原理分析 ................................................................................................ 25 第四章 系統(tǒng)軟件設(shè)計(jì) ............................................................................................26 單片機(jī)程序語言設(shè)計(jì) ....................................................................................... 26 單片機(jī)匯編語言程序設(shè)計(jì)的基本步驟 ................................................ 26 匯編語言程序設(shè)計(jì)方法 ........................................................................ 26 Keil 簡介 .................