超声波测距仪设计开发的毕业设计论文.doc

经典文档 下载后可编辑 经典文档 下载后可编辑 经典文档 下载后可编辑 经典文档 下载后可编辑 毕业设计（论文） 设计（论文）题目： 超声波测距仪设计开发 学 院 名 称 ： 自 动 化 学 生 姓 名 ： 专 业 ： 班 级 ： 学 号 ： 指 导 教 师 ： 答辩组 负责人 ： 经典文档 下载后可编辑 摘 要 随着社会的发展，人们对距离测量精度以及测距工具附加功能多样性的要求越来越高。在社会生活中，超声波的应用无处不在，如汽车雷达倒车系统、管道长度测量、物位测量等。由于超声波具有指向性强，能量消耗慢，在介质中传播距离远，因而超声波技术的研究与开发，具有现实意义。 本文介绍了一种利用超声波测距的系统。该系统是一种基于STC89C52单片机的超声波测距系统。它根据超声波在空气中传播遇到被测物反射的原理，通过计算传播的时间来确定距离。该系统由超声波传感器模块作为超声波发生器和接收器，主控制器模块进行数据的处理，显示模块实时显示被测距离，按键模块实现测距系统的一些附加功能。该超声波测距系统测距范围为2cm—3m，具有测量准确，精度高，显示数据及时的特点，并能锁定当前值，查询历史值。能广泛运用到工厂里，模具制作成型后方便及时校验模具，具有一定的实用性。 【关键词】超声波 测距 单片机 经典文档 下载后可编辑 ABSTRACT With the development of society, people require more for measurement accuracy and distance meter with multiple functions. In social life, the use of ultrasonic is everywhere, for example, the auto reversing system, the measurement of the length of pipe, the measurement of position and so on. The ultrasonic have some characteristics of powerful directivity, low energy-loss, long propagation distance in the medium, so ultrasound technology research and development has the realistic meaning. This paper introduces a kind of ultrasonic ranging system. This ultrasonic ranging system based on a SCM (Single Chip Microcomputer) of STC89C52. It according to the spread of ultrasound in the air meeting something then reflecting, and it measures distance by counting the travel time. This system consists of ultrasonic sensor module as the ultrasonic generator and receiver, main controller module for data processing, display module displaying the distance being measured, keys module for some additional function. This ultrasonic ranging system’s distance measuring range is 2cm to 3m, and it has characteristics of accurate measurement, high precision, and the data displaying in time, and it can lock in the current value and query historical value. It can be widely applied in factory, and it checks a mold after making the mold conveniently, so it is certainly practical. 【Key word