摘要：汽车，已经成为人们日常生活中必不可少的组成部分。随着科技的进步，应用于汽车身上的性能越来越强大、越来越人性化。使人们在享受驾驶乐趣的同时，有着更可靠的安全保障。伴随着汽车的普及，越来越多的家庭购买了汽车，与此同时，也伴随着出现了严重的“停车难”社会问题。本课题就是基于这样的社会背景，设计一种能够帮助驾驶员泊车的应用系统。本文通过以智能小车为模型，模拟汽车在实际倒车运行时的过程。本文通过介绍智能小车平台，设计硬件连接、软件程序以及进行结果调试等几个方面，对智能小车的使用做出更深入的了解，对智能小车定点自动停泊的实现方法进行进一步的研究。具体研究内容如下：

（1）研究智能小车开发平台、一般组成、工作原理、安装与调试方法，设计了基于C51单片机的可以实现自动定点停泊的控制系统。

（2）根据智能小车要实现的基本功能，选择合适的硬件设备，并详细阐述各硬件的工作原理以及安装调试方法，设计了硬件的连接方法，以及对电路图加以展示。研究了自动泊车系统的一般构成，并研究了自动泊车的方法。

（3）根据软件操作系统原理，设计了单片机输入、输出接口与步进电机控制方法。选择开发软件，设计小车巡航控制方法，设计了小车的导航控制，编写控制程序。

（4）对设计的系统进行调试与研究，详细阐述调试的各个步骤，详细记录调试结果，并对调试结果进行分析。

关键词：智能小车；AT89S52；定点停泊;C51单片机;人机交流

Abstract：Cars have become an indispensable part of people's daily life. With the progress of science and technology, the performances of cars' application are more and more powerful, more and more humane. So that people enjoy driving pleasure at the same time, have a more reliable security. With the popularity of cars, more and more families to buy a car, at the same time, also accompanied by a serious "parking difficult" social problem.This topic is based on this social background, the design of an application to help the driver parking system. This article is through the intelligent car as a model to simulate the car in the actual reversing operation of the process. This paper introduces the intelligent car platform, designing hardware connection, software program and the results of debugging and other aspects of the use of intelligent car to make a more in-depth understanding of intelligent car fixed point parking to achieve

further study.Specific research as follows：

(1) Researching on intelligent car's development platform, general composition, working principle, installation and debugging methods to design a control system to achieve automatic fixed-point parking based on the C51 single-chip.

(2) According to the basic functions of the intelligent car to select the appropriate hardware equipment, and elaborate the working principle of each hardware and installation and debugging methods.The design of the hardware connection method,

as well as the circuit diagram to be displayed。The general structure of the  automatic

parking system is studied,and studied the methods of automatic parking.

(3) According to the principle of software operating system, the design of single - chip is to control input and output interface and find the methods to control stepping motor .Choose to develop software, design car cruise control method, the design of the car navigation control and the preparation of control procedures.

(4) The design of the system is debugged and researched.Detailed description is to debug the various steps of debugging, recording the debugging results in detail.And debugging results for analysis.