WinCE线程技术在多参数监护仪软件设计中的应用

An Application of Multithread Technology Based on WinCE in the Software Design for Multi-parameter Monitor

由于多参数监护仪系统实时性要求较高、任务较复杂,给设计工作带来一定的困难。在WinCE多线程及其调度机制的基础上,一种新的适用于复杂任务的实时系统的软件架构设计方法成功地运用到设计中,通过引入多媒体定时器技术,以系统定时线程来协调与调度进程内部线程,并根据任务进展的具体情况,判断与掌握各个内部线程的合适的运行、挂起、终止的时机,进行最佳的调度,从而能得到较好的效率,弥补了系统线程调度机制的局限性。本文的工作可能对同类的应用设计,具有很强参考性,有助于快速开发与灵活设计。

<Abstrcat> The higher real-time capability requirements and the more complex tasks for Multi-parameter Monitor system present many problems to the designing. Based on the analysis on Windows CE multithread techniques and its dispatching mechanism, a new software architecture designing method is presented and applied successfully to the design, which is suitable for the complex real-time application. With the introduction of the multimedia timer technology, the method can coordinate and dispatch inner threads by timer thread, and therefore get a better system efficiency and make up the limits of OS thread dispatch. According to the progressing conditions of tasks, the design can judge and decide the proper opportunities of running, suspending and terminating of inner threads. The design presented in this paper may bring benefits to other similar applications, and provide the references for a quick developing and feasible devising.