An Energy Management Scheme for Embedded Real-Time Systems

碩士 === 國立成功大學 === 電機工程學系碩博士班 === 92 ===   Energy consumption is an important design issue of embedded systems and portable devices. In achieving effective power management, software- controlled approach is usually more flexible than hardware-controlled approach. However, past researches only focused...

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Main Authors: Rong-Hwa Lee, 李榮華
Other Authors: Jing Chen
Format: Others
Language:zh-TW
Published: 2004
Online Access:http://ndltd.ncl.edu.tw/handle/64377299030647897353
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spelling ndltd-TW-092NCKU54422072016-06-17T04:16:58Z http://ndltd.ncl.edu.tw/handle/64377299030647897353 An Energy Management Scheme for Embedded Real-Time Systems 嵌入式即時系統之能源管理機制 Rong-Hwa Lee 李榮華 碩士 國立成功大學 電機工程學系碩博士班 92   Energy consumption is an important design issue of embedded systems and portable devices. In achieving effective power management, software- controlled approach is usually more flexible than hardware-controlled approach. However, past researches only focused on the power management of either processor or device; power consumption of the whole system is not considered at all. This thesis presents a scheduling algorithm which takes into account the power consumption of both processor and devices. It has the feature of deciding speed of processor according to the system utilization such that it can use low power computing speed to reduce power consumption when system utilization is low. On the other hand, it also detects the usage of devices; it will shutdown the power of devices when device is idle. This scheduling algorithm can be implemented easily in real time operating system, such that power is comsumed more efficiently while tasks in the system can meet their deadline requirements. We also use the architecture of eCos to demonstrate how to build a power management interface and framework, such that it has the same interfaces when designing power management functionality. Jing Chen 陳敬 2004 學位論文 ; thesis 40 zh-TW
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description 碩士 === 國立成功大學 === 電機工程學系碩博士班 === 92 ===   Energy consumption is an important design issue of embedded systems and portable devices. In achieving effective power management, software- controlled approach is usually more flexible than hardware-controlled approach. However, past researches only focused on the power management of either processor or device; power consumption of the whole system is not considered at all. This thesis presents a scheduling algorithm which takes into account the power consumption of both processor and devices. It has the feature of deciding speed of processor according to the system utilization such that it can use low power computing speed to reduce power consumption when system utilization is low. On the other hand, it also detects the usage of devices; it will shutdown the power of devices when device is idle. This scheduling algorithm can be implemented easily in real time operating system, such that power is comsumed more efficiently while tasks in the system can meet their deadline requirements. We also use the architecture of eCos to demonstrate how to build a power management interface and framework, such that it has the same interfaces when designing power management functionality.
author2 Jing Chen
author_facet Jing Chen
Rong-Hwa Lee
李榮華
author Rong-Hwa Lee
李榮華
spellingShingle Rong-Hwa Lee
李榮華
An Energy Management Scheme for Embedded Real-Time Systems
author_sort Rong-Hwa Lee
title An Energy Management Scheme for Embedded Real-Time Systems
title_short An Energy Management Scheme for Embedded Real-Time Systems
title_full An Energy Management Scheme for Embedded Real-Time Systems
title_fullStr An Energy Management Scheme for Embedded Real-Time Systems
title_full_unstemmed An Energy Management Scheme for Embedded Real-Time Systems
title_sort energy management scheme for embedded real-time systems
publishDate 2004
url http://ndltd.ncl.edu.tw/handle/64377299030647897353
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