能耗限制的松弛任务实时调度算法

许多嵌入式系统依靠单电池供电。基于嵌入式实时操作系统,提出了一种具有通用性的松弛任务模型,并在此基础上根据电池剩余电能设计了相应的实时调度算法来防止在任务运行过程中耗尽不可充电电源的电能所引起的失效。结果表明,该模型能够有效及时地根据剩余电池电能来调整任务周期,使之能够在使命时间内正确完成计算任务,在一定程度上解决了电池电能对使命时间的约束问题。

On Energy-Constrained Real-Time Scheduling for Elastic Tasks

The energy of many modern embedded systems is power-supplied by the batteries. Based on real-time operating system, this paper presents an elastic task model on energy-constrained with universalization, then designs a corresponding real-time scheduling algorithm for guaranteeing the system stabilization and avoiding failtures caused by running out the energy of the non-recharge power-supply according to the rest energy of the battery. The result shows that this model could change the periods of taks according to the rest energy of the battery effectively and timely, so the computation could be completed in their mission times.