【精品毕业论文设计】基于单片机汽车倒车测距仪的设计_精品.doc

【精品毕业论文设计】基于单片机汽车倒车测距仪的设计 In this paper, using the relation of the ultrasonic transmission distance and time by C8051F MCU controlling and data processing design capacity points that can accurately measure the distance between the ultrasonic range finder, using the design of car parking ranger, can more accurately measure the distance between the obstacle and vehicle.SCM car parking on the analysis on the basis of rangefinders related technologies, combined with the latest research results, Based on Ultrasonic Ranging System reversing conducted in-depth study and research. The system is divided into distance module, alarm system control module and display module, with respect to their program analysis, construction of the single chip architecture and design of car parking ranger program; in the hardware circuit, described in detail the use of microcomputer technology to achieve Distance visual reversing warning system implementation principle, analysis based on single chip main control unit of the system hardware and software design, and tested the system and error analysis, Given the stability of the system indicators. Keywords ： AT89C51 MCU Ultrasound LEDTransceiver Circuit 毕业设计（论文）外文摘要 目录 1绪论 …………………………………………………………………..........….….…..1 2 超声波传感器的介绍 ……………………………...................................................2 2.1超声波传感器的概述 ………………………………………..............................2 2.2 超声波传感器的特点 ……………………………………………………............3 2.3超声效应 ……………………………………………………………….……....... 3 2.4超声波传感器的应用 …………………………………………………................4 3 单片机的介绍 ………………………………………………………......………. ..5 3.1 单片机的定义 ……………………………………………………………………..5 3.2 单片机的特点 ……………………………………………………………………. 5 3.3 单片机的应用 ……………………………………………………………………..5 3.4 AT89C51单片机的介绍 …………………………………………………………....6 4 汽车倒车测距仪的硬件设计 ………………………………………….....................9 4.1 设计的思路 ……………………………………………………………………… 9 4.2 设计的重点与难点 ……………………………………………………………… .9 4.3硬件设计的基本原理及原理图 ………………………………………………..... 9 5 超声波汽车倒车测距仪软件设计 ……………………………………