中文摘要：

为在能源有限的情况下增加系统运行时间,从动态电源管理的超时策略角度出发,探讨了超时策略中阈值选择的影响因素.在国内外动态电源管理策略的研究基础上,分析了超时策略中动态阈值策略与固定阈值策略的原理,完成了对现有的动态阈值策略的阈值选择影响因素的分析,得出了系统进入休眠与唤醒的能量消耗、电池放电电压大小、系统具体的应用环境三方面对阈值选择产生影响.证实了综合考虑阈值的三方面影响因素是找到最优阈值的捷径.

英文摘要：

To increase system uptime with limited energy,this paper discussed the influencing factors of threshold selection in timeout policies from the point of view of timeout policies in dynamic power management.After investigating domestic and overseas principles of dynamic power management strategies,analyzing principles of dynamic and fixed threshold policies in timeout policies and completing analyses of influencing factors of threshold selection in the present dynamic threshold policies,the paper drew a conclusion of the following three influencing factors on threshold selections,which were energy consumption during hibernating and awakening of system,batteries′ discharge voltage and system′s application environment,respectively.At last,this paper confirmed that comprehensive consideration on threshold influencing factors would be a shortcut in finding optimal threshold.