摘要这次的主要目的是制作便携式的多功能门铃用于生活,并使其具备报警、留声、回放等各种便携服务。为了实现以上功能,经过各项权衡,决定使用89C51单片机,并结合适宜的语音芯片和其它类型芯片,各种模板相互结合构成整体组件实现相应功能,而在这其的语音芯片可以用单片机完成操控,使录音功能能够顺利完成。与此同时,使用了红外检测技术以提升其安全性能以及稳定性。77255
此系统实现了当有人按下门铃的时候可以按照事先设定好的情况发出门铃声,可以依据门铃开关的反应判定家中是否有人,若判定结果认为有人在家,就会有相应的反应,具体表现为要求按下留言开关并进行录音,而录音可以分成多个部分进行,每次录音都会持续一段时间,数段录音可以分为多个部分,而其他的额外系统,比如红外线报警,会激活灯光进行报警,蜂鸣器也会在合适的时候被激活鸣叫,已起到警示用户的功能。
毕业论文关键词:单片机 语音芯片 蜂鸣器
Design of multi function doorbell based on Single chip Microcomputer
Abstract The main purpose of this is to make a portable multi-functional doorbell for life that make it with alarm、sound、playback and other portable services。 In order to achieve the above functions, through the various tradeoffs decided to use AT89C51, and combined with the appropriate voice chip and other chips, a variety of templates combined with each other constitute the whole components to achieve the corresponding functions, in which the voice chip can MCU control, the recording function to the successful completion。 At the same time, the infrared detection technology is used to improve the security and stability of the infrared detection technology。
This system realizes the when someone pressed the doorbell can be set in advance of a door bell, can determine whether someone is in the doorbell switch reaction on the basis, determine if the results that someone at home, there will be a corresponding reaction, specific performance is asked to press leave a message switch and recording, and recording can be pided into a plurality of parts, each recording will last for a long period of time, the number of recordings can be pided into a plurality of parts, and other additional systems, such as infrared alarm will activate lights to alarm, the buzzer will tweet is activated in the right time, has to alert the user to the function。
Key words: single-chip voice chip buzzer
目 录
摘要Ⅰ
Abstract-Ⅱ
目录--Ⅲ
图清单----Ⅴ
1 绪 论---1
1。1课题背景---1
1。2课题研究的目的和意义---1
2 单片机门铃系统的总体设计----2
2。1 技术指标--2
2。2 设计方案--2
2。3 系统设计原理--2
2。4 系统开发平台和设计流程----2
3 硬件设计----3
3。1主控模块---3
3。2 ISD1420语音电路---4
3。3人体红外感应模块---7
3。4 键盘扫描电路的设计9
3。5 照明电路---9
3。6 整体电路图9
4软件设计11
4。1 keil软件的介绍及应用-11
4。2 程序设计流程图----12
5成果及使用说明--14
5。1 成果展示--14
5。2 系统使用说明--14
结论--15
参考文献16
致 谢----17附 录----18
图清单
图序号 图名称 页码
图2-1 系统设计原理图 2
图3-1AT89C51引脚图