摘 要：随着现代社会的快速发展，人们的安全意识越来越强，自我防范能力也在随之提高。家庭防盗报警系统能够有效的维护个人的人身和财产安全，因此具有广阔的市场前景。本系统是以STC89C51型单片机作为核心设计出来的，该系统主要是通过热释电红外传感器探测到人体发出特定频率段的红外信号，经过处理后转化成电信号传输给主机，然后通过单片机的控制来启动报警电路报警，从而达到防盗的效果。本系统具有安装隐蔽、不易被发现、节能、灵敏度高、抗干扰能力强等优点，防盗效果也很好。68117

毕业论文关键词：报警系统，STC89C51，热释电红外传感器

Abstract:. With the rapid development of society, People's safety awareness is more and more strong, also improve the self-protection ability. The Home burglar anti-theft alarm system can  protect the personal privacy and property,so this kind of the products will have a broad market.  The system is based on the STC89C51 Single-Chip Microcomputer as the core and designed. This design can detect the specific frequency band infrared signal emitted by the human body by Pyroelectric Infrared Sensor and transmit to the host after processing into electrical signals. Then it controls to start the alarm circuit to alarm by the Single-Chip Microcomputer, in order to achieve the effect of alarm. This design  is very hidden in the actual installation, it is not easy to be found. It is not only has a good performance in energy conservation, sensitivity and anti-interference,and the anti-theft effect is also very good.

Keywords:  alarm system,STC89C51,Pyroelectric Infrared Sensor

目   录

1  引言 4

1.1  选题依据 4

1.2  重要意义 4

2  系统总体设计方案 4

2.1  设计内容 4

2.2  总方框图 5

2.3  主要元器件 5

3  系统硬件设计 6

3.1  电源电路 6

3.2  红外感应电路 7

3.3  控制电路 8

3.4  显示电路 10

3.5  声光报警电路 11

4  系统软件设计 12

4.1  程序流程图 12

4.2  程序代码 13

5  系统仿真与测试 13

5.1  Proteus仿真 13

5.2  Keil编程 14

6  系统组装与调试 15

6.1  元器件焊接 15

6.2  STC-ISP的应用 15

6.3  调试运行 17

结论 18

参考文献 19

致谢 20

附录A  原理图 21

附录B  仿真图 22

附录C  程序代码 23