宠物定时喂食盒

题目： 宠物定时喂食盒 Pet feeding box timer
院系名称：物理与通信电子学院
学生姓名： 胡冰
学生学号： 0708060025
专 业： 电子信息工程
指导老师： 王君
完成时间： 2011 年4 月
I
摘 要
本设计所研究的是实现一个宠物自动喂食器，即将宠物饲料放入其中，设定
五个喂食点，当到达这一时间点后自动进行喂食。主要研究如何在设定时间点内
将宠物饲料投放出来。宠物喂食器系统主要包括单片机控制、自动开关和音乐提
示系统、倒计时间设定系统。喂食器的喂食过程，通过键盘设定五个倒计时间，
当依次到达这五个时间时，定时器同时向继电器和音乐芯片发送信号，音乐芯片
播放一段音乐将宠物吸引过来，继电器开关闭合使发光二极管导通发出红光表示
开关打开投送食物。本设计解决了工作时或节假日时由于主人不在不能对宠物进
行喂食，避免了宠物由于饮食不正常所产生的问题。
在整个系统中，利用单片机对各个系统进行控制。 倒计时系统时间通过六位七
段数码管显示出来。利用键盘设定五个倒计时间，单片机不停的读取时间，并判
断是否到达喂食时间。开关系统由继电器和发光二极管表示 ，继电器收到高电
平时开关闭合发光二极管导通表示开关打开投放喂食。同时设有音乐提示系统，
当到达喂食时间后音乐芯片播放一段音乐提示宠物进行喂食。
关键词：自动喂养；智能；单片机控制
II
Abstract
The study design is to achieve an automatic pet feeder, pet feed into which
will set the five fed point, when you reach this point in time, automatically
feeding. The main point of how to set the time within the pet food put out. Pet
feeder system includes MCU control, automatic switch and music alert system,
the remaining time setting system. Feeder feeding process, the five remaining
time set by the keyboard, when the order reaches the five time, while the timer
chip to send a signal relay and music, music playback chip, a piece of music
attracted the pet, the relay switch is closed So that a red light emitting diode,
said switch delivery of food. This design solves the holidays when work or not
is not the owner of the pet to feed, to avoid the pet food is not normal because
the problems arising.
Throughout the system, the use of single chip control system of each.
Countdown to the system time by six out of seven segment digital display.
Using the keyboard to set the five remaining time, microcontroller reads the
stop time and to determine whether the feeding time arrives. Switching system
by the relay and the light-emitting diode, said switch is closed when the relay
received high light-emitting diode, said switch is running feeding. Tip has a
music system, when the arrival time after feeding a piece of music tips music
playback chip to feed pets.
Keywords: automatic feeding; intelligent; MCU
II
目 录
摘 要 ................................................................................................................... I
ABSTRACT ............................................................................................................ II
1 引言 ...................................................................................................................... 1
2 设计要求 .............................................................................................................. 1
3 方案论证 .............................................................................................................. 1
3.1 自动开关模块 ................................................................................................ 2
3.2 按键控制模块 ................................................................................................ 2
3.3 显示模块 ........................................................................................................ 2
4 设计原理 .............................................................................................................. 2
4.1 单片机模块 .................................................................................................... 2
4.2 自动开关模块 ................................................................................................ 5
4.2.1 自动开关简介 ......................................................................................... 5
4.2.2 继电器 ..................................................................................................... 5
4.3 音乐提示模块 ................................................................................................ 8
4.4 LED 数码管显示模块 ..................................................................................... 8
4.4.1 数码管显示简介 ......................................................................................... 8
4.4.2 数码管编码表 ......................................................................................... 10
4.5 按键模块 ..................................................................................................... 11
5 软件部分 ............................................................................................................ 12
5.1 开发工具介绍 .............................................................................................. 12
5.2 程序框图: .................................................................................................... 14
6 仿真结果数据分析 ............................................................................................. 14
7 结束语 ................................................................................................................ 14
参考文献 ................................................................................................................ 15
附录一：电路图 ..................................................................................................... 16
附录二：源程序 ..................................................................................................... 16
1
1 引言
现在很多家庭都饲 养有猫、狗等宠物，为了保证宠物的身体健康，喂食时需
注意定时定量，但很多人由于工作等原因无法做到，宠物自动喂食盒可以定时定
量的进食，且设计简单方便，有一定的实用价值。
2 设计要求
利用单片机的定时功能设计一个有3—8 个格子的宠物自动喂食盒，要求：
可以通过键盘输入至少 3 个倒计时时间，每一个倒计时时间到后，打开对应
的宠物食物储存格；
打开食物储存格时，自动播放一段音乐召唤宠物进食。
扩展功能： 按照 年/月/日/时/分 的格式输入宠物进食时间；