随着计算机技术的发展，嵌入式应用已经成为计算机应用领域的一个重要组成部分。为了适应嵌入式应用的复杂性和多样性,并缩短其开发周期,使嵌入式开发更方便、快捷，嵌入式操作系统应运而生了。本次论文研究了以往的嵌入式系统，介绍了几个基本模块：任务管理、事件管理、任务间通信和内核管理，在借鉴的基础上，考虑到网络的发展趋势，详细的研究了通信模块，随之而来的本文提出了：安全管理模块；因为目前嵌入式的联网趋势比较大，而一旦联网起来，系统的安全相对来说很重要。论文研究的为多任务、实时性的可剥夺内核，内核采用基于优先级的抢占式调度算法。

 

 

 

 

 

关键词：嵌入式操作系统、内核、调度、系统安全、通信

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

With the developing of Computer Technology, the application of embedded system has become an important part of CS field. In order to go with the complex and various embedded system, and also to shorten the exploit period and make it more convenience and fast, the embedded operating system emerge as times require. This article researchs the embedded system ,introduces the four basc model :task management、event management 、comunication among tasks and kernel management. This article Based on using for reference,considering the development of Internet,I particularly investigate communication module and the coming security management module. Because internet trend of embedded system ,the security of system is more and more important. this article studies the mutitask and real kernal which is deprivable and apply with the rapped algotithm based on the priority.

 

 

 

Key word: embedded operating system,  kernel,  scheduling,  system, security,  communication