紅外防盜報警器的設計

電子機電論文編號:JD934   論文字數:6916,頁數:16

目    錄
摘要……………………………………………………………………………………………1
1 引言…………………………………………………………………………………………4
1.1設計任務與要求 …………………………………………………………………………4
2 基礎知識介紹………………………………………………………………………………4
2.1熱釋電紅外傳感器簡單介紹 ……………………………………………………………4
2.2 PIR的原理特性……………………………………………………………………………5
2.3 AT89C51單片機簡單概述…………………………………………………………………5
2.3.1 AT89C51單片機的結構…………………………………………………………………5
2.3.2 AT89C51單片機管腳說明… …………………………………………………………6
3 方案設計……………………………………………………………………………………8
3.1總體設計思路 ……………………………………………………………………………8
3.2具體電路模塊設計 ………………………………………………………………………8
3.2.1 熱釋電紅外傳感器原理 ………………………………………………………………8
3.2.2 放大電路的設計 ………………………………………………………………………9
3.2.3 時鐘電路的設計 ………………………………………………………………………9
3.2.4 復位電路的設計 ………………………………………………………………………10
3.2.5 發光二極管報警電路的設計 …………………………………………………………10
3.2.6 聲音報警電路的設計 …………………………………………………………………11
3.3 系統硬件電路的選擇及說明……………………………………………………………11
3.4 軟件的程序實現…………………………………………………………………………11
3.4.1主程序工作流程圖 ……………………………………………………………………11
3.4.2中斷服務程序工作流程圖 ……………………………………………………………12
4總結…………………………………………………………………………………………13
參考文獻 ……………………………………………………………………………………13
附錄 設計編程程序…………………………………………………………………………14
附圖 單片機控制的紅外防盜報警器原理圖………………………………………………16

摘 要：本系統采用了熱釋電紅外傳感器，它的制作簡單、成本低、安裝比較方便，而且防盜性能比較穩定，抗干擾能力強、靈敏度高、安全可靠。這種防盜器安裝隱蔽，不易被盜賊發現，同時它的信號經過單片機系統處理后方便和PC機通信，便于多用戶統一管理。本設計包括硬件和軟件設計兩個部分。硬件部分包括單片機控制電路、紅外探頭電路、驅動執行報警電路、LED控制電路等部分組成。處理器采用51系列單片機AT89C51，整個系統是在系統軟件控制下工作的。

關鍵詞：單片機；紅外傳感器；數據采集；報警電路

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