【摘要】：近年來,隨著智能手機(jī)相關(guān)硬件和軟件技術(shù)的飛速發(fā)展,智能手機(jī)應(yīng)用的功能越來越豐富,其能耗需求也越來越大,有限的電池容量已經(jīng)成為智能手機(jī)生產(chǎn)商和用戶所面臨的主要問題之一。雖然統(tǒng)計(jì)智能手機(jī)系統(tǒng)或其應(yīng)用能耗相關(guān)的研究工作層出不窮,但它們大多都基于手機(jī)系統(tǒng)本身建立的硬件能耗模型,因此,這些硬件能耗模型的準(zhǔn)確性對(duì)這些研究工作的準(zhǔn)確性有著重要影響。作為全球最流行的智能手機(jī)操作系統(tǒng)之一,Android系統(tǒng)會(huì)統(tǒng)計(jì)上一次充滿電后手機(jī)各硬件的能耗情況,包括屏幕。相關(guān)研究表明,屏幕已經(jīng)成為智能手機(jī)能耗的主要來源之一。然而,Android系統(tǒng)的屏幕能耗模型存在缺陷,該模型認(rèn)為屏幕能耗速率僅與屏幕的亮度有關(guān),而在新型的OLED屏幕中,屏幕能耗速率還與屏幕所顯示的內(nèi)容有關(guān)。Android系統(tǒng)的屏幕能耗模型的準(zhǔn)確性已經(jīng)無法保證。因此,本文提出了一種優(yōu)化的屏幕能耗模型,并在優(yōu)化模型的基礎(chǔ)上提出了兩種降低屏幕能耗的方法。具體而言,本文工作主要包括:1.建立屏幕能耗速率與屏幕所顯示的內(nèi)容之間的回歸關(guān)系模型,在此基礎(chǔ)上提出一種優(yōu)化的屏幕能耗模型——OLED屏幕能耗模型,該模型不僅考慮屏幕亮度,還考慮屏幕所顯示的內(nèi)容。2.在Android系統(tǒng)框架中給出OLED屏幕能耗模型的具體實(shí)現(xiàn),設(shè)計(jì)并進(jìn)行實(shí)驗(yàn)從多個(gè)角度驗(yàn)證該模型的準(zhǔn)確性,同時(shí)評(píng)估該模型的計(jì)算開銷。3.提出兩種降低屏幕能耗的方法——翻轉(zhuǎn)屏幕內(nèi)容顏色和調(diào)整屏幕配色方案,并在Android系統(tǒng)框架中給出這兩種方案的具體實(shí)現(xiàn),同時(shí)進(jìn)行實(shí)驗(yàn)評(píng)估其實(shí)際效果。
[Abstract]:In recent years, with the rapid development of hardware and software technology related to smart phones, the functions of smart phone applications are becoming more and more abundant, and the demand for energy consumption is also increasing. Limited battery capacity has become one of the major problems for smartphone makers and users. Although the research work related to the energy consumption of smart phone system or its application is endless, most of them are based on the hardware energy consumption model established by the mobile phone system itself, so, The accuracy of these hardware energy consumption models has an important impact on the accuracy of these research work. As one of the world's most popular smartphone operating systems, the Android system will count the last full charge of the phone's hardware energy consumption, including the screen. Related research shows that screen has become one of the main sources of smart phone energy consumption. However, the screen energy consumption model of the Android system is flawed, which assumes that the screen energy consumption rate is only related to the brightness of the screen, while in the new OLED screen, The screen energy consumption rate is also related to the content displayed on the screen. The accuracy of the screen energy consumption model of the Android system is no longer guaranteed. Therefore, an optimized screen energy consumption model is proposed, and two methods to reduce the screen energy consumption are proposed on the basis of the optimized model. Specifically, this paper mainly includes: 1. A regression model between screen energy consumption rate and screen display is established, and an optimized screen energy consumption model, OLED screen energy consumption model, is proposed based on this model, which not only takes into account screen luminance, but also provides an optimal screen energy consumption model. Also consider what is displayed on the screen. 2. The realization of OLED screen energy consumption model is given in the framework of Android system. Experiments are carried out to verify the accuracy of the model, and the computational overhead of the model is evaluated at the same time. Two methods to reduce the energy consumption of the screen are proposed, which are to flip the color of the screen content and adjust the color matching of the screen. The realization of the two schemes is given in the framework of the Android system, and the actual results are evaluated by experiments at the same time.
【學(xué)位授予單位】：南京大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TP316;TN929.53

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