多功能旋转LED时钟设计与实现.doc

本科毕业设计（论文） 题目 多功能旋转LED时钟的设计与实现 学 院 电气与自动化工程学院 多功能旋转LED时钟的设计与实现 摘 要 近年来，单片机在各个领域得到了广泛的应用，由单片机控制的LED屏也逐渐深受人们的欢迎。最初，LED用作仪器仪表的指示光源，后来在大面积显示屏中得到了广泛使用，产生了很好的经济效益和社会效益。 本文具体介绍了多功能LED屏时钟的设计与实现，并详细说明其软硬件构成及原理。时钟系统以STC12C5A60S2单片机作为核心控制器，读取DS1302芯片的时间数值，经单片机编译，将时间（年/月/日/时/分）显示在LED屏上。时钟上5个按键可以设置闹钟，当闹钟时间到,则会响起音乐。每到整点，时钟会进行整点报时。本设计的主要特色创新是利用4个水银开关呈菱形摆放，当时钟垂直地面放置时,根据不同的水银开关导通组合，可以判断出时钟所处的方向，从而使时钟具有类似重力感应的功能，将时钟旋转摆放时，始终能够自上而下显示时钟。经过反复实验与长期实践，证明该系统设计方案是可行的。 关键词：LED屏 STC12C5A60S2 DS1302 水银开关 语音报时 Design and Implementation of Multifunctional Rotatable LED Clock Abstract In recent years, the microcontroller has been used widely in various fields，LED screen controlled by the microcontroller was welcomed by the people gradually.Initially, LED is used as an indication light source of instrumentation, Later, has been widely used in the large area display, resulting in a good economic and social benefits.This article describes an approach based on the specific design and imple mentation of 51 single multifunction LED screen clock, and details of its hardware and software configuration and principle. This article describe an design and implementation of Multifunctional LED Screen Clock based on single multifunction specifically, and details of its hardware and software configuration and principle. Clock system uses MCU STC12C5A60S2 as the core controller, reads the time value by DS1302 chip, the time(year/month/day/hour/minute/second) displayed on the LED screen after 51 single compilation.There are five keys on the clock to set alarm time.The music will sound when the alarm time is coming . The clock will chime on every hour. Important feature innovation of this design is the use of four mercury switches placed as diamond-shaped.When the clock is placed perpendicular to the ground,Depending on the composition of the mercury switch is turned on, we can determine the direction of the clock . so that the clock h