摘要
针对电池供电系统放电过程中输出电压不恒定的特性,在临界电压区设计电压自适应超时策略。根据工作负载的变化情况,在线动态调整超时门限值,在?V(?t)值恒定情况下,通过改变?t(?V)值达到系统性能与电池寿命间的平衡,并扩展动态电压管理自适应对象的范畴。在嵌入式系统开发平台的应用结果表明,该策略在降低系统功耗的同时,能延长电池持续使用时间。
Aiming at the property of output voltage non-constant characteristic in the discharge process of battery supply system,this paper designs a voltage self-adaptive overtime strategy in critical voltage area.Overtime threshold value is dynamically adjusted on-line according to variation of workloads,the value of △t（△V） is changed when the value of △V（△t） is constant in order to reach the balance of system performance and battery life,and it extends dynamic voltage management adaptive object areas.Application result in embedded system development platform shows that the strategy can reduce the system power consumption and prolong the battery continued utility time.
出处
《计算机工程》
CAS
CSCD
北大核心
2010年第16期254-256,共3页
Computer Engineering
基金
湖南省教育厅科研基金资助项目(05C248)
关键词
嵌入式系统
动态电源管理
电池特性
电压自适应超时策略
embedded system
dynamic power management
battery characteristic
voltage self-adaptive overtime strategy
