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1、常州工学院毕业设计1摘要介绍了基于 AT89C2051 单片机的紫外线空气消毒机系统的功能及设计原理，并给出了具体的设计方案，包括系统的硬件电路设计和软件设计流程图。该消毒机除了具有臭氧杀菌、紫外线消毒和高效过滤器杀菌消毒的功能，还能进行实时检测，并显示室内的空气质量情况。本文设计了一种动态紫外线消毒机，它能克服传统的紫外线消毒缺点，消毒的效果更好，消毒时人可以不离开现场，具有显著的优越性。所以，此仪器经投入使用后，具有运行稳定可靠，适应性好等优点。该设计包括硬件和软件部分，其硬件设计包括以下部分，分别为数码管电路部分，开关电源部分，蜂鸣器和继电器电路部分。硬件电路的设计分电源、微控、遥控三部
2、分。电源部分通过降压、整流、滤波得到稳定的低压直流电源；微控部分采用 AT89C2051 单片机，通过软件编程实现开关、定时功能；遥控部分采用 BA5104/BA5204 编码/译码器，对红外遥控信号进行编码、译码，实现遥控功能。控制系统软件采用汇编语言编写的，按照模块化方式设计。软件部分包括主程序和多个子程序。软件人机交互是通过电源键、设置键和手动键来控制消毒机的运行。主程序的核心任务是正确判断这三个按键，根据按键情况继而执行相应的子程序来控制消毒机运行。 关键词：89C2051 单片机；紫外线，消毒；控制系统 常州工学院毕业设计2Abstract：A control system of a
3、ir disinfection device based on AT89C51 is introduced, and design principle is illustrated. Besides, the design steps including hardware circuit and software flowchart are provided. The disinfection device not only has triple function of sterilization composed by ozone, ultraviolet ray and efficient
4、 filters, but also real-time detects and displays the indoor air quality situation.A kind of dynamic ultraviolet disinfection machine was designed in this paper. It can overcome the shortcomings of traditional ultraviolet disinfection machine, with better disinfection effect and significant superior
5、ity, and thus people dont need to leave the disinfection scene. So, the device has merits of high reliability and applicability after put into use. The design of hardware and software components, including its hardware design includes the following parts, digital tube respectively, switching power s
6、upply circuit of the buzzer and relay circuit part.And the hardware circuit is made up of the power source, main control module and remote control module. The steady low-voltage DC power-supply is got by decreasing 220V 50Hz AC voltage with transformer and then converting voltage with rectifier filt
7、er. Switch and timing function based on AT89C2051 is realized by software programming. Realization of coding and decoding of infrared remote control signal is based on BA5104/BA5204 encoder/decoder.Modular structure is adopted to program the software with assembly language. The software component mo
8、stly includes function integrity of the main program and subroutines. Software human-computer interaction is through the power button, setting keys and manual button to control disinfection machine operation. Main program 常州工学院毕业设计3of the core task is the three key, a correct judgment according to t
9、he situation and then executes buttons subroutine to control disinfection machine operation.Key words: Disinfection ，ultraviolet light，Control system 常州工学院毕业设计4目录摘要.1ABSTRACT：.2目录.4第一章 绪论.61.1 课题背景.61.2 国内外相关领域的研究现状.61.3 主要研究内容.71.4 研究意义 .71.5 本章小结 .8第二章 系统方案.92.1 紫外线空气消毒机的原理 .92.2 具体方案.102.3 本章小结 .
10、11第三章 硬件电路设计.123.1 元器件的选择 .123.1.1 电源部分.12 3.1.2 遥控部分.13 3.1.3 微控部分 .153.2 硬件模块设计.173.2.1 电源电路.17 3.2.2 遥控发射与接收电路 .19 3.2.3 微处理器电路.223.3 本章小结 .26第四章 软件部分.274.1 主程序的设计.274.2 子程序的设计.304.2.1 电源按键子程序的设计 .30 4.2.2 十秒闪烁结束子程序的设计 .314.3 本章小结 .36常州工学院毕业设计5第五章 系统调试.375.1 硬件调试.375.1.1 电源部分 .37 5.1.2 遥控接收部分 .37 5.1.3 微控部分 .395.2 软件调试 .405.3 本章小结.42结论.44致谢.45参考文献.
