自动水龙头的设计本科学位论文

本科毕业论文（设计）

自动水龙头的设计

姓名：韩飞飞

诚 信 承 诺 书

本人郑重承诺和声明:

我承诺在毕业论文撰写过程中遵守学校有关规定,恪守学术规范,此毕业论文(设计)中均系本人在指导教师指导下独立完成,没有剽窃、抄袭他人的学术观点、思想和成果,没有篡改研究数据,凡涉及其他作者的观点和材料,均作了注释,如有违规行为发生,我愿承担一切责任,接受学校的处理,并承担相应的法律责任。

毕业论文（设计）作者签名：

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摘 要

本论文主要介绍有关红外发射和接收电路设计的自动水龙头的原理与设计方案相关内容。由红外发射电路，红外接受电路，控制电路，电源等组成红外线自动控制水龙头。当人或者其它物体靠近时，红外发射管发出的红外光由于遮挡反射到接收管上，接收管对其进行光电转换，放大管进行放大，译码器进行译码，从而促使继电器动作，电磁阀由于得电而吸合，系统便自动打开水源，当物体离开或超出一定范围时，系统自动关闭水源，停止水流。

电路不仅设计简单，而且使用方便，同时非常有利于节能。近年来，我国一直提倡并追求“节能降耗”，本论文设计有利于实现这一目标。传统水龙头及其它的供水等设施，不仅水资源浪费非常严重而且使用不方便。为了解决这一现象，本论文准备设计这个红外线自动供水电路,因为它不仅节约用水，而且使用方便。与传统供水设施相比，能够提高水资源的使用效率。使用方便，且由于不需要用手接触水龙头，避免了传播病菌。由于系统电路设计相对简单实用，因此可以广泛用于商场，办公大楼，学校等人员多而密集场合。

关键词：传感器;红外线;自动控制;自动水龙头

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ABSTRACT

This paper describes mainly the theory and proposal of the automatic top of the infrared transmitter and receiver . Circuit not only designs simple , but also uses easily . which are made of the infrared transmitter , the infrared receiver amplifier circuit ,control circult and solenoid valve . when people or others which access to the tap , it makes immediately electronical relay , then the top gets the electricity which makes the system to walk than the top begin to flow water , the infrared automatic contralto which stop warking as soon as the things leave it .

For the past few-years now,Our country advocates and pursues all the way “ energy-saving and cost-reducing ’’ . This paper which is described mainly is amid to achieve this goal . Conventional top and other facilities are not only a waster of water resources , but also not easy particularly to use . In order to answer the question , I want to design the infrared automatic tap circuit . It is easily use and saving water that the automatic tap can make it . comparing with traditional faucets, it is also water-saving. Fully-automatic tap is more convenient and artistic, and it makes the users to wash their hands directly without touching the tap, avoiding the transmission of germs. It can be widely used into people-intensive sites such as shopping malls, schools and office blocks.

Key words : senor ; infrared ray ; automation ; automatic top

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目 录

1 绪论 ................................................................................................................................................... 1

1.1 自动水龙头的背景及意义 ............................................................................................... 1 1.2 自动水龙头的应用及发展前景 ...................................................................................... 1 1.3 国内外的研究情况 ............................................................................................................. 2 2 系统总体设计方案 ........................................................................................................................ 3

2.1 系统设计要求 ...................................................................................................................... 3 2.2 系统设计总方案 ................................................................................................................. 3 2.3 系统设计总体框架 ............................................................................................................. 3 3 系统中各模块的设计 .................................................................................................................... 5

3.1 稳压电源部分的设计 ........................................................................................................ 5 3.2 振荡电路部分的设计 ........................................................................................................ 7 3.3 红外接收控制电路部分设计 ........................................................................................... 8

3.3.1 红外接收解调电路的设计 .................................................................................... 8 3.3.2 电压放大电路的设计 ........................................................................................... 10 3.3.3 音频译码器的设计 ................................................................................................ 12 3.3.4 三端稳压器的设计 ................................................................................................ 13 3.3.5 LM567调制传感器的设计 ................................................................................... 14 3.4 执行电路部分的设计 ...................................................................................................... 16

3.4.1 电磁阀的特性 ........................................................................................................ 16 3.4.2 电磁阀电路的设计 ................................................................................................ 18

4 系统电路原理图及PCB板图 .................................................................................................... 19

4.1 系统电路原理图 ............................................................................................................... 19 4.2 系统的PCB板图 ............................................................................................................... 23 结论 ...................................................................................................................................................... 24 致谢 ...................................................................................................................................................... 25 参考文献 ............................................................................................................................................. 26

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