筆記型電腦的電源管理及省電控制的研究

Study on Power Management and Power Saving Control for Notebook Computer

許勝發(Sheng-Far Hsu)

指導教授 ： 賴炎生

國立臺北科技大學/機電學院/電機工程系所/碩士(2006年)

摘要

本論文的主要目的在探討筆記型電腦的電源管理及中央處理器的省電控制，並與未採用電源管理及省電控制的結果作比較。
筆記型電腦的電源管理包含了針對背光、硬碟、無線網卡等週邊元件耗電的管理。而中央處理器的省電控制則參考英特爾的步階調速(SpeedStep)節能技術，針對負載狀況調降中央處理器的工作電壓及工作頻率，以達到節能的目的。
實驗結果顯示在電源管理中以改善背光對耗電的貢獻最大，可提高34.3%的待機時間。而中央處理器的省電控制則可將使用英特爾Celeron M中央處理器的電腦提高36%的待機時間。若將電源管理及中央處理器省電控制同時應用在筆記型電腦中，整體而言，可將使用Pentium M中央處理器的筆記型電腦的待機時間提高180%，並可將Celeron M中央處理器的筆記型電腦的待機時間提高145%，證明採取電源管理及省電控制，確實能大幅延長筆記型電腦使用時的待機時間。

關鍵字

筆記型電腦 ； 中央處理器 ； 電源管理 ； 省電

並列摘要

The objective of this thesis is to realize the power management for notebook computer and power saving control of Central Processor Unit (CPU). The comparison results of with and without power control and power saving will be investigated.
Power management of notebook computer focuses on the management of devices’ power consumption such as backlight brightness, hard disk, wireless LAN. Power saving control of CPU referring to Intel SpeedStep technology, will reduce processor’s operating voltage and operating frequency when system is under light load in order to save power.
It is demonstrated by experimental results that it can achieve the most contribution which extend about 34.3% battery life by improving the backlight brightness in power management. The notebook computer which uses Intel Celeron M CPU can be extend by 36% of battery life with power saving control of CPU. If both power management and power saving control of CPU are used, can be extend by 180% of battery life for the notebook computer with Intel Pentium M CPU, and extend by 145% of battery life for Intel Celeron M CPU. It is demonstrated that notebook computer can extend it’s battery life effectively by power management and power saving control.

並列關鍵字

Notebook Computer ； CPU ； Power Management ； Power Saving

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