《模拟电子技术课程设计说明书》2012

模拟电子技术课程设计说明书

红外线报警器

系 部： 电气与信息工程 指导教师： 贾雅琼 小组成员: 专 业： 电气自动化 班 级： 2012年3月1号

摘 要

红外线报警器一般用作防盗报警，是一种最常见的报警装置，该装置由红外线发射部分、红外线接收部分、三极管、555定时器以及蜂鸣器组成，可通过发射的红外线被物体阻挡时，红外线接受部分无法接收到红外线时产生信号，利用三极管特性以及555定时器控制蜂鸣器进行报警并控制其报警时长。

关键元件 红外线接收部分；三极管；555定时器

ABSTRACT

Infrared alarm generally used as anti-theft alarm, It’s one of the most common alarm device, The device by infrared emission part, infrared receiver part, triode, 555 timing and buzzer composition, Through the ir were blocked, infrared object accept partial cannot receive infrared generated when the signal, Using triode characteristics and 555 timing control buzzer on the police and control its alarm duration. Key words Infrared receiver parts; Triode; 555 timing

目 录

1 总体设计方案与要求·································· 4

1.1 设计任务的功能要求说明························· 4 1.2 设计课题总体方案介绍及工作原理说明············· 4 2 设计电路及其仿真分析································ 5 2.1 设计电路图····································· 5 2.2 设计电路的仿真结果····························· 6 3 硬件电路各部分电路设计······························ 8 3.1 硬件电路图及各模块功能简要介绍················· 8 3.2 PCB图 ········································ 8 3.3 元器件清单····································· 9 4 系统的调试及性能分析································ 10 4.1 系统的调试····································· 10 4.2 性能分析······································· 11 5 设计结论及体会······································ 11

6 参考文献············································ 11

7至谢··················································12

8附录··················································12

1 总体设计方案与要求

1.1 设计课题任务

设计一个红外线防盗报警器。要求：如果红外线发射极与接收级信号被隔断则立即报警，报警时长为30秒。

1.2 设计课题总体方案介绍及总体方案说明

1.2.1 设计课题总体方案介绍

该装置以三极管和555定时器为核心，采用红外线发射管和红外线接受管为发射和接受装置，利用三极管的特性和555定时器来控制蜂鸣器工作，在红外线接受管未接收到红外线时输出电平信号来使蜂鸣器报警。

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