基于μC/OS-Ⅱ焊接系统任务的定义与分析  

Tasks definition and analysis of the welding system based on the μC/OS-Ⅱ

作　　者：周漪清[1,2] 张红兵[3] 薛家祥[2] 王振民[2] 

机构地区：[1]广东省江门市广播电视大学,广东江门529000 [2]华南理工大学机械与汽车工程学院,广东广州510640 [3]湖北咸宁学院计算机学院,湖北咸宁437000

出　　处：《电焊机》2012年第6期118-122,共5页Electric Welding Machine

基　　金：国家自然科学基金资助项目(50805051);材料成形与模具技术国家重点实验室开放基金资助项目(2011-P02)

摘　　要：将嵌入式实时操作系统μC/OS-Ⅱ移植到LPC2119微处理器,实现嵌入式操作系统管理的数字化焊接系统,并对配置参数进行优化,将逆变电源系统中的软件工作以任务的形式进行划分,并分配任务的优先级,任务越重要,赋予的优先级应越高,系统总是运行就绪任务中优先级别最高的任务;为了避免多个任务同时对系统中的同一个共享资源进行访问,系统引入了ADCSem和LCDSem两个信号量,任何任务只有获得了该信号量后才能使用该资源;消息邮箱是系统的一种通信方式,通过传递消息,实现了多任务之间的信息交流。By migrating the real time embedded operating system μC/OS-Ⅱ to the LPC2119 microprocessor,the digital welding system managed by the embedded operating system is implemented.In this digital welding system ,the configuration parameters are optimized, the software component works are divided in task form, and the each task priority is assigned ,the more important of the task, its priority is higher,and the system always executes the task which its priority is the highest and it is ready.In this welding system,in order to avoid the same shared resource is accessed by different tasks in the same time,the two semaphores,ADCSem and LCDSem,are introduced ,any task can access the shared resource only with it getting the semaphores permission.The message mailbox is a method of system communication, and different tasks can achieve information exchange between each other by sending message.

关 键 词：多任务 嵌入式系统 可裁剪性 移植 

分 类 号：TG434[金属学及工艺—焊接]