基于光电传感器的奔跑速度检系统设计.doc

单位代码 01 学　　号 090119012 分 类 号 TN79.1 密 级 毕业设计说明书 奔跑速度检测系统电路设计 院（系）名称 信息工程学院 专业名称 测控技术与仪器 学生姓名 指导教师 2013年 5 月 10 日 奔跑速度检测系统电路设计 摘 要 随着信息技术的不断发展，单片机在测量系统中得到了广泛的应用。速度是一个系统经常需要测量、控制和保持的量，速度是否达到要求，决定着生产及工业过程是否产生相应的效果。 速度的测量方法有许多种，但在不同的应用环境下，相应的测量方法有它自己的特点和误差。因此对单片机速度测量系统的研究有着重要的目的和意义。本设计采用AT89C51单片机作为主要控制核心，应用光电传感器采集信号，经过单片机定时计数并运用一个算法测量出奔跑物体的行驶速度，最终用4位LED数码管显示其测量结果，硬件电路简单，软件功能完善，测量速度快、精度高，成本低等特点，充分发挥了单片机的控制功能，与所学知识紧密结合，学以致用，有很高的的使用价值。 关键词：单片机，速度测量，光电传感器，LED  Running Speed Measurement System Design Author: Li qinhai Tutor:Yang quanjiu Abstract With the continuous development of information technology, single-chip microcomputer has been widely used in the measurement system. Speed is a systems often need to measure, control and maintain, Speed whether meet the requirements, determine the production and industrial processes produce corresponding results. Speed measurement method has many kinds, but in different application environment, the corresponding measurement method has its own characteristics and error. So the study of microcontroller velocity measurement system has important purpose and meaning. This design USES AT89C51 as the main control core, using photoelectric sensors to collect signal, through single chip microcomputer timer counter and use an algorithm to measure the car speed, eventually with four LED digital tube display the measurement results, has high practical value. This article is give full play to the advantages of the performance of the single chip microcomputer, introduces the basic principle of the speed measuring method, implementation steps and the hardware and software design, hardware circuit is simple, software function is perfect, fast measurement speed, high precision, low cost etc. Key words: single chip microcomputer; Velocity measurement; Photoelectric sensor; The LED 目 录 TOC \o 1-3 \h \z \u H