嵌入式系统源程序级软件能耗建模与分析

针对嵌入式系统能耗对各种嵌入式设备工作时长的影响，本文从系统指令级到源程序级的软件能耗考虑，首先通过分析设备源程序级语句的相关特征，基于源程序语句的指令能耗，提出一种针对源程序级的能耗模型，然后基于模型分析对五个经典算法的源程序中不同类别语句进行能耗优化，最后分别对五组经典算法优化前后的能耗比较。实验表明，本模型使得优化后的源程序能耗降低了9.46%-50.29%，达到了降低嵌入式系统软件能耗的目的。

Modeling and Analysis from Source Program Level of Energy Consumption of Software of Embedded Systems

According to the influence of energy consumption of embedded systems to operation time of various embedded systems, this paper takes the energy consumption of software from system instruction level to Source Program Level as a consideration. First, we proposed a consumption model for the source program level of energy, by analyzing the related features and instruction consumptions of source statement. First, we proposed a consumption model for the source program level of energy, by analyzing the related features and instruction consumptions of source statement. Then,we optimized different categories of statements energy consumption of five classical algorithms based on model analysis. Finally, we compared the energy consumption of five groups of classical algorithm before and after optimization. Experiments show that this model reduces energy consumption of the optimized source program by 9.46%-50.29%, and achieves the purpose of reducing the energy consumption of embedded system software.