摘要：本文以16位单片机MC9S12XS128MAA为主控MCU，结合5个电磁传感器，对智能车系统的设计、制作以及调试过程进行了较详细的介绍。该系统由机械、电路及控制软件三个部分组成。本文主要从电路和软件两部分着手，重点阐述了智能车系统的电磁传感器、数据采集及处理、路径识别、电机驱动、舵机转向以及车速闭环检测等部分的原理、作用以及智能车运行时各模块之间的协调关系。41160
通过该课题可以受到较全面的电子应用系统设计的工程训练，在培养大学生综合运用知识的能力和科技创新意识，提高大学生分析、解决实际问题的能力方面都有重要意义。智能车不仅是科学技术发展的趋势，也是集环境感知、分析预测和多等级辅助驾驶等功能于一体的综合性系统，更是未来智能交通系统的重要组成部分之一。
毕业论文关键词：智能车，电磁传感器 单片机，PID控制算法
An electromagnetic sensor based design of smart car system
Abstract：In this paper, 16-bit microcontroller MC9S12XS128MAA as the master MCU, combined with five electromagnetic sensors, design, production and commissioning of smart vehicle system were introduced in detail. The system is consist of mechanical system, the control circuit and software of three parts. This article from the circuits and software begin in two parts, focusing on the electromagnetic sensor of the smart car systems, data acquisition and processing, path identification, motor drives, servo steering, and the principle part of the closed-loop speed detection, as well as the role of each of the smart car is running coordinate the relationship between modules.
By this subject I can be subjected to a more comprehensive engineering training of designing the electronic application system,and it has an important significance in improving students' ability to use the knowledge and awareness of science and technology innovation, help college students to analyze and solve practical problems of capacity. Smart car is not only the trend of science and technology development, but also set environmental awareness, analysis and forecasting and multi-level driver assistance functions in an integrated system, it is an important part of the future of intelligent transportation systems.
Key Words:  Smart Car，Electromagnetic Sensor，Microcontrollers，PID
目录
1 绪论    5
1．1 课题研究背景    5
1．2  课题主要内容    6
1．3  本文结构    7
2  智能汽车控制系统总体设计    7
2.1智能车的机械部分    7
2.1.1智能车的机械结构    7
2.1.2智能车的机械布局    8
2.2 系统设计方案    8
3  硬件系统设计    9
3.1 单片机最小系统设计    9
3.1.1 MC9S12XS128MAA单片机性能简介    9
3.1.2 输入/输出端口功能及配置    10
3.1.3 电源相关引脚    12
3.1.4 单片机最小系统设计    13
3.2电源模块    13
3.3信号检测模块    14
3.3.1电磁传感器选择    14
3.3.2电磁传感器信号放大电路    15
3.4 电机驱动模块    16
3.4.1 八总线收发器74LVC245    16
3.4.2 电机驱动芯片IR2104S    16
3.4.3 升降压变换芯片MC34063    18
3.5速度检测模块    19
3.6  舵机模块    19
3.7 人机交互模块    20
4  软件系统设计    20
4.1软件设计概述    20
4.2 MC9S12XS128芯片各模块初始化    21 基于电磁传感器的智能车系统设计+电路图+程序:http://www.751com.cn/tongxin/lunwen_41130.html