基于单片机的红外闹钟装置设计与实现

广州大学松田学院毕业论文（设计）题目基于单片机的红外闹钟装置设计与实现二○一三年六月基于单片机的红外闹钟装置设计与实现摘要：随着生活节奏的提高，事务必的繁多，人们越来越离不开电子产品的定时提醒功能，而最典型的就是早晨的闹钟唤醒，很多人有赖床和睡回笼觉的坏习惯，影响上班上学，本文中将针对此部分人群设计一款具有强制唤醒功能的智能感应闹钟。单片机适用于机电一体化的智能产品，控制功能强，而热释电晶体作为红外激光的一种较理想的探测器，被广泛应用到各种自动化控制装置中，本设计基于以智能化强制唤醒方式，防止懒人赖床的设计理念，以STC89C52单片机控制为核心，结合DS1302时钟芯片，1602LCD液晶屏，按键电路，热释电红外传感器模块，周期性遮光装置。除了基本的闹钟功能，可以设置并且显示年、月、日、时、分、秒、星期，主要实现智能红外感应功能，到达设置时间，能自能检测床上一定范围内有无存在人体，有则驱动闹铃并延时检测，无则延时感应检测。设计特色在于闹钟理念的创新，及热释电红外传感器对静止人体的感应敏感度低的问题解决。关键词：STC89C52，1602液晶显示屏，热释电红外传感器，DS1302时钟芯片BasedonsinglechipmicrocomputerinfraredalarmdevicedesignandimplementationAbstract：Withtheimprovementofliferhythm,thetransactionwillbeavarietyofperspectives,peoplemoreandmoreinseparablefromelectronicproductsregularlyremindfunction,andthemosttypicalisthealarmclockwakeupinthemorningandmanypeopledependonthebedandsleepupbadhabits,andaffectedtoworkorschool,thisarticleinviewofthispartdesignacrowdhasforcedintelligentsensingalarmclockwakeupfunction.Microcontrollerisapplicabletomechanicalandelectricalintegrationofintelligentproduct,controlfunctionisstrong,thepyroelectriccrystalasanidealdetector,infraredlaseriswidelyappliedtovariouskindsofautomationcontroldevice,thisdesignisbasedonintelligentforcedwakeupway,preventthelazybeddesignconcept,STC89C52singlechipcontrolasthecore,basedonDS1302clockchip,1602LCDscreen,buttoncircuit,pyroelectricinfraredsensormodule,periodicshadingdevice.Inadditiontothebasicalarmclockfunction,cansetupanddisplayyear,month,day,hours,minutes,seconds,weeks,andmainfunctionofintelligentinfraredinductiontosetatime,andcandetectthebedwhetherexistwithinacertainrangeofthehumanbody,hasthedrivealarmsanddelaydetection,nodelayinduceddetection.Designfeatureisthatalarmclockconceptinnovation,pyroelectricinfraredsensorandlowsensitivitytostatichumanbodyinductionofproblemsolving.Keywords：STC89C52,1602LCD,Pyroelectricinfraredsensor,DS1302clockchip目录1绪论...............................................................................................................................................11.1单片机与热释电红外传感器的应用.........................................................................................11.1.1单片机的应用.................................................................................................................11.1.2热释电红外传感器的应用............................................................................................11.2单片机与热释电红外传感器的结合........................................................................................12设计要求与方案论证..........................................................................................................................32.1设计要求....................................................................................................................................32.2系统基本方案选择及论证.........................................................................................................32.2.1单片机芯片方案的选择及论证.....................................................................................32.2.2显示模块选择方案和论证.............................................................................................32.2.3时钟芯片的选择方案和论证.........................................................................................42.3电路设计最终方案决定.............................................................................................................43主要元件介绍.....................................................................................................................................53.1STC89C52.....................................................................................................................................53.1.1STC89C52主要功能及PDIP封装..................................................................................53.1.2STC89C52引脚介绍........................................................................................................53.2DS1302时钟芯片介绍................................................................................................................63.2.1DS1302概述....................................................................................................................63.2.2DS1302引脚介绍............................................................................................................73.2.3DS1302时钟芯片工作原理............................................................................................73.2.4DS1302内部结构图.......................................................................................................83.31602字符液晶介绍...................................................................................................................83.3.11602液晶概述...............................................................................................................83.3.21602引脚介绍...............................................................................................................93.3.31602字符液晶使用基本操作时序.............................................................................103.4热释电红外传感器介绍......................................................................................