基于单片机的无线报警音乐门铃的设计(硬件设计)剖析.doc

基于单片机的无线报警音 乐门铃的设计(硬件设计） Microcontroller-based wireless alarm tone music doorbell design (hardware design) 总计 毕业设计（论文） 29 页 表 格 3 个 插 图 24 幅 摘 要 单片微机的出现是计算机技术发展史上的一个重要的里程碑，它让计算机从海量的数值计算进入到智能化控制领域。作为21世纪的工科大学生，不仅要熟练地使用通用微机进行各种数据处理，还要把计算机技术运用到专业领域或相关领域，即具有“开发”能力。随着技术的发展，单片机作为小型智能化控制设备得到了越来越多的用途，特别是以单片机为核心的控制设备得到了实用性的发展，越来越用于社会和大众生活。 本文介绍了一款基STC89C51 单片机设计的无线报警音乐门铃，在不同的章节介绍了门铃系统中应用到得电子元件的一些基本内容，其中，详细介绍了本系统核心元件PT2262/PT2272编解码元件的工作原理。同时给出该门铃系统的硬件电路图和源程序。 本文简要介绍了MCS-51单片机的结构及应用特点,并详细地提出了基于MCS-51单片机无线门铃的软件和硬件设计的方法。鉴于其有安全可靠、价格低廉、硬件电路简单、便于实现、易于改进等优点，市场前景良好。 关键词：单片机, 无线数据收发，pt2262/pt2272编解码芯片 Abstract Microcomputer development of computer technology there is an important milestone in the history, which makes computer numerical calculation from the mass into the field of intelligent control. As the 21st century college student, not only proficient in the use of computer to various data processing, but also to the use of computer technology to the fields or related areas, namely with the development capabilities. With the technology, intelligent control devices as a small single chip has been a growing number of uses, especially single chip as the core control equipment has been the development of practical, more for social and public life. This article describes the design of a microcontroller-based wireless alarm STC89C51 musical doorbell, introduced in different sections of the application of the bell system to get some of the basic elements of electronic components, which details the core components of this system of encoding and decoding components PT2262/PT2272 it works. Also gives the doorbell hardware circuit and the source. This paper describes the structure of MCS-51 microcontroller and application characteristics, and detailed proposed MCS-51 microcontroller based wireless doorbell of the software and hardware design methods. Given its a safe and reliable, low cost, hardware circuit is simple, easy to impleme