近年來，技術的演進見證了移動式和穿戴式裝置的進步速度不斷地加快，智慧眼鏡的誕生使得新興應用如雨後春筍般冒出。現今智慧眼鏡多應用在醫療、製造、物流等工作場景，需要長時間配戴；而智慧眼鏡的電池電量又較同為Android系統的智慧手機、平板電腦來得少，如何提升智慧眼鏡電力使用效益成為重要課題。
本論文探討Android裝置耗電之來源與用電管理，從最主要的三個面向：CPU、螢幕、WakeLock著手，分別設計相對應之管理方案。由於智慧眼鏡的特性，其螢幕面積小且使用情境較少發生WakeLock錯誤；其主要耗電來源為CPU。因此，本論文之研究主要著重於智慧眼鏡的CPU耗電管理。
本論文研究目標為設計智慧眼鏡電源管理方案，為達到跨裝置之目的，透過Android應用程式(app)的形式呈現。其可以運作在基於Android系統之智慧眼鏡，並具有下列特點：(1) 針對智慧眼鏡獨特的顯示與操控方式，設計專屬使用者介面；(2) 提供CPU的耗電管理組態資訊；(3) 建立稱為Balance之電源管理模式擴充Android系統原有電源管理模式；(4) 一鍵套用，使用者之裝置可以迅速切換為所選定之電源管理方案；(5) 使用者可依使用情境設定專屬的客製化電源方案；(6) WakeLock清除工具，可顯示並清除系統中之WakeLock；(7) 調整螢幕亮度工具。此電源管理方案之實作透過動態訊息輔助使用者設定，提供三組儲存位置存放備用電源管理方案，方便使用者在需要時快速切換電源管理方案。
本論文並透過實測建立預設之電源管理方案。此電源管理方案的實測結果顯示其套用至本論文實作之Balance模式與Android系統預設之Interactive模式相比，最高可省電達19.1%。本論文之電源管理方案也可使用於Android系統之智慧手機、平板電腦，實測結果顯示同樣能達到提升電力使用之效益。

The birth of smart glasses has introduced many novel applications. Nowadays, smart glasses are mostly used for work purposes in areas such as medical treatment, manufacturing, logistics, etc., and usually they need to be worn for quite a long time. However, the battery power of smart glasses is less than that of smart phones and tablet computers running the same Android system. How to improve the power efficiency and the management of power consumption of smart glasses become important issues.
This study investigates the main sources of power consumption on Android platforms, namely: CPU, LCoS display, and WakeLock, in order to develop an effective power management solution for smart glasses running Android. Based on the features of smart glasses, the smaller display and the less potential misuse of WakeLock appear unlikely to be the power drains and most power is consumed by the CPU. Therefore, this study mainly focuses on managing the CPU power consumption of smart glasses.
The goal of this thesis is developing a power management solution for smart glasses running Android system. In order to achieve the purpose of cross-device, the solution is presented in the form of a user app (short for application) in Android. It has the following features: (1) friendly user interfaces adapted to smart glasses platform for convenient operations; (2) providing the configuration information of CPU power management in an easy- to-read way; (3) implementing a new power governor, namely Balance, to expand the power management modes provided by Android; (4) one-click operation to quickly switch to a preset power plan; (5) supporting up to three user customized power plans; (6) a WakeLock management tool that displays and releases, as selected by the user, WakeLocks currently acquired in the system; (7) a screen backlight adjustment tool that supports changing the brightness of screen display. The implementation of this power management app takes advantage of dynamic messages and the built-in power plans of Android system in order to achieve its functionalities as well as assist users in setting up and saving the desired power plans. The app works independently with the built-in power management functions of the host Android system and imposes no impact on the built-in power governors.
To evaluate the implemented power management app and for the purpose of user convenience, customized power plans are built as default user defined power plans. The settings of these plans are derived from the measurements of power consumption in common use cases of smart glasses. Compared to the default built-in Interactive mode of Android system, the Balance mode of the app, when applied with the presettings, shows power saving up to 19.1%. Experiments conducted on smartphone and tablet running Andoid system also show that the app helps improve the power efficiency on the devices. These results demonstrate the effectiveness of the power management app.

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