设计说明书
总字数：13000+
随着智能家居理念的普及和生活品质的提升，传统单一呼叫功能的门铃已难以满足用户对便捷交互与多元化体验的需求。日常居家场景中，访客呼叫、留言传达及远程提醒等功能的融合，能有效解决无人应答时的信息传递问题，提升居住的便利性与安全性。因此，研发一种集成呼叫、音乐、留言及远程通知功能的门铃设备十分必要。
本设计提出了一种基于 STC89C52 单片机的多功能音乐门铃。系统主要功能包括：通过独立按键 key 触发门铃呼叫，触发后驱动 DY-SV17F 模块播放音乐；借助 ISD1820 语音模块实现语音留言功能，通过专用按键控制留言录制与播报；同时，系统通过蓝牙模块将门铃呼叫信号远程传输至手机端，实现访客呼叫的手机端提醒。
该多功能音乐门铃的作用在于，为用户提供了一种交互灵活、功能全面的居家访客应答解决方案。通过音乐呼叫、语音留言与远程通知的协同，既能及时响应访客需求，又能解决无人在家时的信息留存问题，有效提升居家生活的便捷性与智能化水平。
关键词：单片机；多功能音乐门铃；语音留言；蓝牙传输
Design of Multifunctional Music Doorbell
Abstract
With the popularization of smart home concepts and the improvement of living quality, traditional doorbells with a single calling function can hardly meet users’ demands for convenient interaction and diversified experiences. In daily home scenarios, the integration of functions such as visitor calling, message transmission and remote reminder can effectively solve the problem of information delivery when no one answers, and improve the convenience and safety of living. Therefore, it is very necessary to develop a doorbell device integrating calling, music, message and remote notification functions.
This design proposes a multifunctional music doorbell based on the STC89C52 single-chip microcomputer. The main functions of the system include: triggering the doorbell call through an independent key, which drives the DY-SV17F module to play music after triggering; realizing the voice message function with the help of the ISD1820 voice module, and controlling the recording and broadcasting of messages through dedicated keys; at the same time, the system remotely transmits the doorbell call signal to the mobile phone terminal through the Bluetooth module to realize the mobile phone terminal reminder of visitor calls.
The function of this multifunctional music doorbell is to provide users with a home visitor response solution with flexible interaction and comprehensive functions. Through the coordination of music calling, voice message and remote notification, it can not only respond to visitors’ needs in time, but also solve the problem of information retention when no one is at home, effectively improving the convenience and intelligence level of home life.
Keywords：Single-chip microcomputer; Multifunctional music doorbell; Voice message; Bluetooth transmission
目 录
1 绪论
1.1 研究背景及意义
1.2 国内外研究现状
1.3 主要内容
2 系统总体方案设计
2.1 系统总体设计
2.2 主要模块方案选择
3 系统硬件设计
3.1 总体硬件框架
3.2 主控模块电路设计
3.3 按键模块电路设计
3.4 音乐播放模块电路设计
3.5 语音留言模块电路设计
3.6 蓝牙通信模块电路设计
3.7 电源模块电路设计
4 系统程序设计
4.1 编程软件介绍
4.2 系统主流程设计
4.3 独立按键子流程设计
4.4 MP3音乐播放模块子流程设计
4.5 录音模块子流程设计
4.6 蓝牙模块子流程设计
5 实物制作与功能测试
5.1 实物制作
5.2 门铃呼叫与音乐播放功能测试
5.3 语音留言与播报功能测试
5.4 蓝牙远程提醒功能测试
5.5 多功能协同运行测试
6 总结
参考文献
致谢
附录A 原理图
附录B PCB
附录C 主程序
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