红外线防盗报警器设计(毕业设计论文)_精品.doc

本科生毕业设计（论文） 学 院： 专 业： 学 生： 指导教师： 完成日期： 2012年5月02日 大连理工大学城市学院本科生毕业设计（论文）总计 毕业设计（论文） 页 表格 个 插图 幅Infrared Burglar Alarm Abstract The design and development of graduation infrared burglar alarm is based on the power supply circuit for the entire circuit to provide +5 V voltage, through an infrared transmitting and receiving system whether the intrusion sensors, SCM system and through to the sound and light alarm circuit sent a signal to sound and light alarm purposes. The paper introduced the simple anti-theft alarm infrared background of the development, basic circuit structure and working principle, Infrared and domestic security alarm state of development, then combined application specific circuits on the application of circuit theory. Papers discussed in detail the specific power rectifier circuit, rectifier, filtering, Regulators process. SCM system, as well as through the creation of internal procedures to distinguish between infrared receiving terminal voltage changes. and through MCU to control sound and light alarm circuit, the final adoption of 555 timer output signal stability. Finally, the appendix attached to this part of the design applied to the circuit diagram. Keywords: Power Circuit;Mcs-51; Infrared send and receive; 555 timer 目 录 前 言 ………………………………………………………………………… 7 第一章 概 述…………………………………………………………………… 8 1.1红外线防盗报警器的发展前景………………………………………… 8 1.2红外线防盗报警器的基本工作原理…………………………………… 9 1.3红外线防盗报警器的基本组成………………………………………… 10 1.4国内发展状况 ………………………………………………………… 14 第二章 电源电路设计…………………………………………………………… 15 2.1功能简介………………………………………………………………… 15 2.2变压器电路……………………………………………………………… 15 2.3整流电路………………………………………………………………… 16 2.4滤波电路………………………………………………………………… 18 2.5稳压电路………………………………………………………………… 21 第三章 红外线发射和接收系统……………………………………………………24 3.1 红外线简介……………………………………………………………… 24 3.2 红外线发射系统………………………………………………………… 25 3.3红外线接收系统……………………………………………………………25 第四章 单片机系统…………………………………………………………………26 4.1 AT89C51单片机的结构…………