基于嵌入式实时操作系统汽车节能系统控制器的设计.pdf

哈尔滨工程大学
硕士学位论文
基于嵌入式实时操作系统汽车节能系统控制器的设计
姓名:刘琳琳
申请学位级别:硕士
专业:系统工程
指导教师:张仁忠
20090301
哈尔滨工程大学硕士学位论文
摘要
随着汽车业的蓬勃发展,城市汽车的保有量不断增多,特别是公交汽车
启动制动频繁,而汽车在启动时发动机燃料燃烧不充分,废气排放量大,污
染严重。本文设计了一个基于嵌入式实时操作系统汽车节能系统的控制器
在汽车制动时可以将汽车巨大的动能转化成高压气体的势能实现车辆制动,
当需要重新启动时,再将保存的高压气体释放出来驱动车辆。实现了汽车制
动能回收再利用,达到节能、环保的效果。
本文综述了汽车节能系统的发展和现状,阐述了汽车节能系统的工作原
理和相关的气动技术知识,并介绍了嵌入式实时操作系统的概念、特点,并
对嵌入式实时操作系统的选择和对嵌入式实时操作系统内核进行了分析
硬件方面,在已有基本系统构成的基础上,实现了控制器的设计。首先
介绍了本系统的硬件核心AT89C52微控制器的特性和使用要点,并分别阐述
了以AT89C52为核心所构建的汽车节能系统控制器的硬件开发板的各组成部
分,包括输入模块、输出模块、数据显示模块、通信模块等模块。在分析各
个模块电路图及其所涉及芯片特性的基础上,设计了满足本系统性能指标要
求的控制器。
软件方面,在深入分析系统所采用的嵌入式实时操作系统μC/OS-II的
软件特性、文件结构和开发方法的基础上,利用 Keil C51集成开发环境,将
其移植到AT89C52微控制器上,并进行系统应用软件的设计
最后对系统进行了软硬件调试并对系统中影响稳定性的因素以及所采取
的相应的措施作了简要地分析。
关鍵词:嵌入式实时操作系统;μC/OS-I1;AT89C52:汽车节能系统;移植
哈尔滨工程大学硕土士学位论文
Abstract
With the flourishing development of vehicle industry, the quantity of the
buses the city own become more increasing. The buses start from stop frequently,
which make the engine burn deficiently and exhaust emission increasing. The
circumstance is polluted badly. This paper design a bus saving energy system
controller based on embedded real-time. When the buses apply the brake, it makes
them stop or decelerate that the large kinetic energy transform to the potential
energy of high-handed air. When the buses need to restart, the the potential energy
is released to drive the buses. It implements the kinetic energy gathers to recycle
and achieve saving energe and protecting entironment.
This paper discusses the development and actuality of the bus saving
energy's system. This paper introduces the conception and character of embedded
real-time OS. It chooses the embedded real-time OS and analyse the core structure
of uc/os-li
In hardware, the paper it design a controller based on the existed basic
system structure. Firstly it describes the character and introduction of the
hardware core AT89C52. It expound the input module, output module, data
display module, communications module and so on in the exploitation board of
the bus saving energy's system. And it analyse every module's circuit diagram
and its chip character
In software, after it thoroughly analyse the sofeware character, file structures
and exploitation methods of the embedded real-time OS uc/os-l, it use Keil
C51 integration exploitation circumstance to transplant real-time operation system
to AT89C52. And it designs the sofeware structure
Finally the paper debugs the system, and analyzes briefly the factors those
influence the stability of the system in the design and the measures
Keywords: embedded real-time operation system; uc/OS-II AT89C52; bus
saving energy system; transplant