An Energy Efficiency Evaluation Model Based on the Mechanical Work System

• Published in: Advances in Wireless Sensor Networks Vol. 334; pp. 501 - 515
• Main Authors: Xia, Xianjin, Li, Shining, Li, Zhigang, Chen, Hao
• Format: Book Chapter
• Language: English
• Published: Germany Springer Berlin / Heidelberg 2013; Springer Berlin Heidelberg
• Series: Communications in Computer and Information Science
• Subjects: do-work model; energy discharge rate; energy efficiency evaluation; energy entropy; heterogeneous WSN
• ISBN: 3642362516; 9783642362514
• ISSN: 1865-0929; 1865-0937
• DOI: 10.1007/978-3-642-36252-1_47

Energy efficiency is a key issue in wireless sensor networks. Researches on the energy efficiency evaluation models could promote the development and application of WSN. In this paper, wireless sensor network was modeled as a mechanical work system whose work-efficiency was defined as the metric to measure energy efficiency. In addition, our model introduced a power aggregation function and utility function to filter out application-specific features. Then, based on these models and metrics, we proposed a general framework to evaluate energy efficiency and applied relative energy consumption to measure the operational cost of heterogeneous nodes. Furthermore, we constructed two metrics, average energy discharge rate and energy entropy, to quantitatively measure a systems energy consumption status. The effectiveness of our evaluation model and metrics had been validated by the simulation results.