基于智能电表微内核动态优先级任务调度方法

为了提升新一代智能电能表中微内核实时嵌入式操作系统中任务调度算法性能，文中提出一种微内核动态优先级任务调度方法。在该方法中，将智能电能表中的任务划分周期性任务和事件触发任务，引入最高优先级调度和最早截止时间调度机制，对事件触发任务分配动态优先级。同时，针对低优先级任务可能存在得不到调度的情况，采用任务补偿调度策略，确保各任务能够及时得到执行。通过案例分析验证了文中方法的有效性，进而为新一代智能电能表实时任务处理应用奠定基础。

Dynamic priority for task scheduling in the micro-kernel of smart meter

In order to promote the performance of task scheduling in the embedded real-time operation system for new generation smart meter, this paper presents a kind of method to task scheduling. In the method, the tasks built in the smart meter are divided into two types of tasks, including the period tasks and the event-happened tasks. Among the event-happened tasks, the Earliest Deadline First schedule is devoted to allocate the priority of tasks. At the same time, to make the lower priority of tasks get response during the task schedule during the running, this paper introduces the strategy which is made up for the task schedule, in order to ensure the task have the time to running as possible as it can. Finally, experiments on the test to demonstrate the effectiveness of our method, and the results show that it can provide the basis for applying the method into the smart meter.