毕业论文-基于STC89C51单片机的红外自动计数器的设计.doc

毕业论文 题 目 基于单片机的红外自动计数器的设计 学生姓名 学号 所在学院 物理与电信工程学院 专业班级 电子1班 完成地点 物理与电信工程学院实验室 2016年5月30日  基于STC89C51单片机的红外自动计数器的设计计数器有直观和计数精确的优点，目前已在各种行业中普遍使用本文所设计的计数器是采用红外方式，抗干扰性好，可靠性高本是  The design of infrared automatic counter based on microcontroller Author: GeMingJie (Grade 12,Class 5,Major electronics and information engineering,School of Physics and Electronic Information Engineering,Shaanxi University of Technology,Hanzhong 723000,Shaanxi) Tutor: Wang Ting Abstract:Rapid development in the pattern of todays society, an increasing number of products on pipeline and a variety of business occasions need to automatically count. Based on SCM products constitute automatic counter has the advantages of intuitive and accurate count, now in a variety of commonly used in industry. This article is designed to counter radio-style method using infrared, interference immunity and high reliability. The STC89C51 microcontroller chip design applications as a core, 4 LED digital tube, the use of infrared LM393 chip count, and add the alarm function. This implementation method has the advantage of simple circuit, reliable, real-time, simple operation, easy programming and so on. The design of the guiding idea is to use infrared emission infrared LED, infrared receiver to receive the infrared, and enlarge, forming high commutation signal. When persons or block infrared light, the receiver does not receive infrared control signals, the amplifier the output low, while the level control signal into the microcontroller counts, and by decoding the digital display drive circuit values. This will be the number of persons or things to statistics.  Key?words:?infrared shooting tube; LM393 ; LED digital tube；STC89C51 目录 第 1 章 绪论 1 1.1