Android平臺電源管理關(guān)鍵技術(shù)的研究與實現(xiàn)
[Abstract]:With the rapid development of information technology, portable smart phones based on Android platform have become more and more popular and have been quietly integrated into all aspects of modern social life. Because of the limitation of Android mobile phone shape, volume and heat dissipation, the Android smartphone can not meet the needs of people because of the limited system performance. The effective power management of mobile phone can improve the ability of mobile phone to a certain extent. Therefore, based on Android platform, a DVFS technology based on power management is proposed to reduce the power consumption of Android mobile phone and reduce the query times of temperature mapping table by using space complexity in exchange for time complexity. The main work of this paper is as follows: 1. Aiming at the problem of high power consumption in CPU, this paper proposes a power management optimization technique for CPU power consumption. This technology analyzes the power sources of CMOS integrated circuits in embedded devices, including dynamic power consumption and static power consumption. At the same time, it introduces Linux power management strategy and DVFS., the key technology of low power consumption. In this paper, the power consumption of CPU is reduced by effective power management strategy. Aiming at the problem of high power consumption of Android mobile phone, this paper presents an optimized XL algorithm of fine particle CPU frequency modulation and low power XL, combined with the DVFS technology of Android dynamic power management. The algorithm dynamically adjusts the frequency of CPU and reduces the power consumption of Android mobile phone. The experimental results show that the low power LHF algorithm is 4.22% lower than that without power optimization in mobile video recording. The low power XL algorithm proposed in this paper is 5.04 lower than that without power optimization. The low power XL algorithm reduces the power of the low power LHF algorithm by 0. 82 and further improves the Android mobile phone's ability to live. 3. In order to solve the problem of the time complexity of the temperature mapping table in Android system, this paper proposes an optimized temperature lookup algorithm based on Intel platform. The principle of Android temperature searching is analyzed, and the experiment is carried out on the basis of the power management unit of Intel platform and the related experimental test tools. The experimental results show that although the space complexity is increased, the search times of the temperature mapping table are reduced by 60 times, and the efficiency of the system execution is improved.
【學位授予單位】:蘭州理工大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TN929.53;TP316
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