亮度自动调节台灯电路的设计Word下载.docx

亮度自动调节台灯电路的设计Word下载.docx

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当人离开一段时间后台灯会自动关闭并作出提醒，这样便有效地节约了能源。

此外系统还带有时间显示的功能，通过按键调节可以对时间进行校正。

经过测试，各模块的功能均能正常实现，同时该系统还具有控制简单、反应灵敏等优点。

关键词:

STC12C5A60S2单片机;

光敏电阻;

PWM波;

红外感应

1

Abstract

ThebrightnessautomaticadjustmentcircuitsystemoflampiscontrolledbySTC12C5A60S2,throughotherexpansionslikephotoresistormodule,brightnessofthelampcanbeautomaticallyadjustedaccordingtothatoftheoutside.Thedesignmakesitpossibleforthelamptoadjustit’sbrightnessautomatically,themicro-controllergetslightintensitynearbybythephotoresistorandtheinformationwillbeconvertedintoadigitalsignal.Infraredmoduleofthesystemjudgeswhethersomeoneisnearthelamp,thelampwillautomaticallyturnonwhensomeoneisnearbyandwillnotworkwhenitisnot.Whenpeopleleavesthedeskforsometime,thelampwillautomaticallyturnoffandmakeareminder,whicheffectivelysavesenergy.Inadditionthesystemalsohasthefunctionoftimedisplay,whichcanbecorrectedbykeys.Testsprovethatthefunctionofeachmodulecanbeachievenormallyanditiseasilytocontrolaswellasquick-witted.

:

STC12C5A60S2;

Photoresistance;

PWM;

InfraredsensorsKeywords

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1绪论..........................................................................................................................5

1.1研究课题的背景与意义...............................................................................5

1.2本课题的研究内容及实施方案...................................................................5

1.3论文内容安排...............................................................................................6

2整体方案设计..........................................................................................................7

2.1整体逻辑框图...............................................................................................7

2.2方案论证.......................................................................................................73硬件方案设计........................................................................................................10

3.1STC12C5A60S2最小系统........................................................................10

3.2光敏电阻.....................................................................................................11

3.2.1光敏电阻的性质..............................................................................11

3.2.2光敏电阻模块电路图......................................................................13

3.3液晶显示屏1602........................................................................................14

3.3.11602简介.........................................................................................14

3.3.21602与单片机连接图.....................................................................15

3.4时钟芯片DS1302......................................................................................16

3.5红外传感器.................................................................................................17

3.6按键模块.....................................................................................................17

3.7蜂鸣器电路.................................................................................................184软件设计................................................................................错误～未定义书签。

4.1整体软件流程图.........................................................................................19

4.2各子模块功能设计.....................................................................................20

4.2.1STC12C5A60S2单片机A/D转换模块.........................................20

4.2.2STC12C5A60S2单片机中断模块.................................................22

4.2.3单片机定时器模块..........................................................................24

4.2.4光线采集的实现..............................................................................27

4.2.5自动断电功能的实现......................................................................28

4.2.6LCD显示模块.................................................................................28

4.2.7时钟模块..........................................................................................30

4.3软件开发环境.............................................................................................32

4.3.1KEIL简介........................................................................................32

4.3.2STC-ISP简介..................................................................................335系统调试................................................................................................................35

5.1焊接.............................................................................................................35

5.2调试结果...............................................