基于更新法估计空闲时间的Inter-DVS算法的优化与实现

动态电压调整(DVS)技术是软件节能技术的另一种形式。由于CMOS电路的能耗和供电电压的平方及频率成正比关系,所以降低供电电压和频率是减少能耗的最有效方法之一。本文首先对DVS的各种算法作了详细的分类分析。然后,以"使用更新法"估计空闲时间的任务间DVS算法为例,采用嵌入式Linux操作系统对其进行了优化。最后,讨论了实现具有动态电压调解功能的嵌入式Linux操作系统的节能方法。

Realization and Optimization of Inter-DVS Algorithm Based on Updating Estimation Idle Time

Dynamic voltage scaling(DVS)is an another effective technology form through software saving power energy.Dropping supply voltage and decreasing electronic frequence is one of the efficient methods for use in reducing of the power consumption because CMOS circuits power consumption has the direct ration rapport both with the supply power voltage square and with the frequence.In this paper the diversification of DVS algorithm is firstly analyzed in detail.Then,the utilization updating DVS algorithm being taken as example,this algorithm optimization is performed using embedded Linux operation system.Finally,an algorithm,with which the energy saving can be realized is discussed.