毕业设计_基于AT89S51单片机超声波距系统的设计.doc

PAGE 毕业设计(论文)正文题 目 基于AT89S51单片机超声波测距系统的设计专 业机械设计制造及其自动化班 级姓 名学 号指导教师职 称  基于AT89S51单片机超声波测距系统的设计摘要：本文主要研究开发了一种基于单片机微处理器的超声波测距系统。该系统以空气中超声波的传播速度为确定条件，利用反射超声波测量待测距离。在介绍超声传感器原理与特性和超声测距系统功能的基础上，提出了系统的总体构成。介绍了具体的软硬件设计以及相关的实验情况,针对测距系统发射、接收、检测、显示部分的总体设计方案进行了论证，对测距系统的一些主要参数进行了讨论。关键字:超声波，测距，测量精度THE STUDY AND APPLICATION OFDISTANCE-MEASUREMENT SYSTEM BASED ON ULTRASONIC WAVEABSTRACT: This paper primarily investigates a kind of ultrasonic distance measurement device based on microprocessor. This device can measure certain distance with reflected wave on condition that the speed of transmitting wave is fixed. It generally specifies the theoretical foundation of the device, introduces the software and hardware design of the device and correlative experiments. The design of the distance measurement is targeted on high precision and little blind area. Then it proposes the whole structure of the system by introducing the function of ultrasonic distance meter and presenting the theory and characters of ultrasonic sensor. And then the transmission, receiver, detection, display scheme of this distance meter system is brought out. At the same time, a number of main technical parameters are discussed.Key Words: ultrasonic,measuring distance, measurement accuracy目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc292787502 第一章 绪论 PAGEREF _Toc292787502 \h 1 HYPERLINK \l _Toc292787503 1.1.引言 PAGEREF _Toc292787503 \h 1 HYPERLINK \l _Toc292787504 1.2.超声波检测技术的发展 PAGEREF _Toc292787504 \h 1 HYPERLINK \l _Toc292787505 1.3.超声波技术的广泛应用 PAGEREF _Toc292787505 \h 2 HYPERLINK \l _Toc292787506 第二章 超声波测距技术综述 PAGEREF _Toc292787506 \h 3 HYPERLINK \l _Toc292787507 2.1.引言 PAGEREF _Toc292787507 \h 3 HYPERLINK \l _Toc292787508 2.2.超声波介绍 PAGEREF _Toc292787508 \h 3 HYPERLINK \l _Toc292787509 2.2.1.超声波的基本性质 PAGEREF _Toc292787509 \h 4 HYPERLINK \l _Toc292787510 2.3.超声波传感器介绍 PAGEREF _Toc292787510 \h 4 HYPERLINK \l _Toc292787511 2.3.1.超声波传感器的原理及结构 PAGEREF _Toc2927