紅外防盜報(bào)警器的設(shè)計(jì)
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摘 要：本系統(tǒng)采用了熱釋電紅外傳感器，它的制作簡(jiǎn)單、成本低、安裝比較方便，而且防盜性能比較穩(wěn)定，抗干擾能力強(qiáng)、靈敏度高、安全可靠。這種防盜器安裝隱蔽，不易被盜賊發(fā)現(xiàn)，同時(shí)它的信號(hào)經(jīng)過(guò)單片機(jī)系統(tǒng)處理后方便和PC機(jī)通信，便于多用戶統(tǒng)一管理。本設(shè)計(jì)包括硬件和軟件設(shè)計(jì)兩個(gè)部分。硬件部分包括單片機(jī)控制電路、紅外探頭電路、驅(qū)動(dòng)執(zhí)行報(bào)警電路、LED控制電路等部分組成。處理器采用51系列單片機(jī)AT89C51，整個(gè)系統(tǒng)是在系統(tǒng)軟件控制下工作的。

關(guān)鍵詞：?jiǎn)纹瑱C(jī)；紅外傳感器；數(shù)據(jù)采集；報(bào)警電路

The Design of Imfrared Alarm
Abstract : This system used Pyroelectric infrared sensor. Its manufacture is simple, and its cost is low, and fixing is convenient. Besides, the system has many merits, such as steady guard against theft, and strong antijamming ability, and high thesensitivity, and high reliability. The fixxing of this alarm is covert, which is discovered easily by cracksman. After has been processed by SCM, the signal of alarm communicates with PC, which is convenient for uniform management. This design includes hardware part and software part. The hardware part includes the control circuit of SCM, and the infrared probe circuit,and the alarm circuit, and LED control circuit. The SCM uses AT89C51, the overall system works under the control of the systemsoftware.
Key words: SCM; infrared sensor; data collection; alarm circuit



目 錄
摘要……………………………………………………………………………………………1
1 引言…………………………………………………………………………………………4
1.1設(shè)計(jì)任務(wù)與要求 …………………………………………………………………………4
2 基礎(chǔ)知識(shí)介紹………………………………………………………………………………4
2.1熱釋電紅外傳感器簡(jiǎn)單介紹 ……………………………………………………………4
2.2 PIR的原理特性……………………………………………………………………………5
2.3 AT89C51單片機(jī)簡(jiǎn)單概述…………………………………………………………………5
2.3.1 AT89C51單片機(jī)的結(jié)構(gòu)…………………………………………………………………5
2.3.2 AT89C51單片機(jī)管腳說(shuō)明… ……………………………………………………………6
3 方案設(shè)計(jì)……………………………………………………………………………………8
3.1總體設(shè)計(jì)思路 ……………………………………………………………………………8
3.2具體電路模塊設(shè)計(jì) ………………………………………………………………………8
3.2.1 熱釋電紅外傳感器原理 ………………………………………………………………8
3.2.2 放大電路的設(shè)計(jì) ………………………………………………………………………9
3.2.3 時(shí)鐘電路的設(shè)計(jì) ………………………………………………………………………9
3.2.4 復(fù)位電路的設(shè)計(jì) ………………………………………………………………………10
3.2.5 發(fā)光二極管報(bào)警電路的設(shè)計(jì) …………………………………………………………10
3.2.6 聲音報(bào)警電路的設(shè)計(jì) …………………………………………………………………11
3.3 系統(tǒng)硬件電路的選擇及說(shuō)明……………………………………………………………11
3.4 軟件的程序?qū)崿F(xiàn)…………………………………………………………………………11
3.4.1主程序工作流程圖 ……………………………………………………………………11
3.4.2中斷服務(wù)程序工作流程圖 ……………………………………………………………12
4總結(jié)…………………………………………………………………………………………13
參考文獻(xiàn) ……………………………………………………………………………………13
附錄 設(shè)計(jì)編程程序…………………………………………………………………………14
附圖 單片機(jī)控制的紅外防盜報(bào)警器原理圖………………………………………………16




參考文獻(xiàn)
[1] 吳政江. 單片機(jī)控制紅外線防盜報(bào)警器[J]. 錦州師范學(xué)院學(xué)報(bào)
[2] 宋文緒. 傳感器與檢測(cè)技術(shù)[M]. 北京: 高等教育出版社




附錄 設(shè)計(jì)編程程序
1. 主程序清單如下：
ORG 0000H
LJMP MAIN
ORG 0003H
LJMP PINT0
ORG 0200H
MAIN: MOV IE,#81H ;CPU開(kāi)放中斷，INT0允許中斷
SETB IT0 ;外部中斷為邊沿觸發(fā)方式
MOV SP,#30H ;指針入口地址
......