光电式报警器 报告.pdfVIP

题目光电式报警器

内容及要求

1)采用双光路结构，当任一光路被遮挡时，报警器发出间歇式声光报警；

2)采用LED显示被遮栏的路数，无报警显0，l路显1，2路显2，同时遮挡显

3；

3)采用5V供电。

进度安排

第1周：查阅资料，学习仿真软件，确定方案，完成原理图设计及仿真；

第2周：领元器件、仪器设备，制作、焊接、调试电路，完成系统的设计；

第3周：检查设计结果、撰写课设报告。

摘要

报警器的应用十分广泛，在汽车、摩托车报警器，仓库大门以及银行保安系统中，

几乎无一例外地使用了报警器电路。而光电式报警器采用光电信号转换的方式，不仅

电路简单，而且安全可靠。与传统的报警器相比较，光电报警器可应用的范围更加广

泛，如火灾探测、煤气泄露报警、玻璃破碎探测等。

本文设计了一种光电式报警器，该报警器通过感光器件（H92B4）把光信号转换

成电信号，该电信号驱动译码器（CD4511）来控制数码管的显示，并利用逻辑或门

来控制由555多谐振荡器等组成的报警电路。该报警器的设计采用模块化结构，分别

有光电转换模块、数字显示模块以及声光报警模块。

关键词：光耦、数码显示、声光报警

目录

第一章系统组成·······················································1

1.1系统组成框图···················································1

1.2系统原理·······················································1

第二章主要单元模块···················································2

2.1光电转换模块···················································2

2.2数字显示模块···················································3

2.3声光报警模块···················································4

第三章总体电路设计····················································5

3.1总体电路······················································5

3.2仿真结果分析···················································6

第四章电路焊接与调试·················································7

第五章实验结论·······················································8

参考文献······························································9

附录A元件清单······················································10

附录B焊接实物图····················································11

第一章系统组成

1.1系统组成框图

本次设计的光电式报警系统主要由光耦电路、译码电路、数码显示以及声光报警

等部分组成。光耦电路实现光信号采集及输出功能，数码显示和声光报警部分则对光

耦输出的信号进行处理，从而产生报警指示作用。

光译数

耦码码

电电显

路