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A Hierarchical Approach for Power Management on Mobile Embedded Systems

  • Arliones Stevert HoellerJr
  • Lucas Francisco Wanner
  • Antônio Augusto Fröhlich
Part of the IFIP International Federation for Information Processing book series (IFIPAICT, volume 225)

Abstract

Mobile Embedded Systems usually are simple, battery-powered systems with resource limitations. In some situations, their batteries lifetime becomes a primordial factor for reliability. Because of this, it is very important to handle power consumption of such devices in a non-restrictive and low-overhead way. This power management cannot restrict the wide variety of different low-power modes such devices often feature, thus allowing a wider system configurability. However, once in such devices processing and memory are often scarce, the power management strategy cannot compromise large amounts of system resources. In this paper we propose a simplified interface for power management of software and hardware components. The approach is based on the hierarchical organization of such components in a component-based operating system and allows power management of system components without the need for costly techniques or strategies. A case study including real implementations of system and application is presented to evaluate the technique and shows energy saves of almost 40% by just allowing applications to express when certain components are not being used.

Keywords

Power management energy consumption management embedded systems mobile computing low-power computing embedded operating systems 

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Copyright information

© International Federation for Information Processing 2006

Authors and Affiliations

  • Arliones Stevert HoellerJr
    • 1
  • Lucas Francisco Wanner
    • 1
  • Antônio Augusto Fröhlich
    • 1
  1. 1.Laboratory for Software and Hardware IntegrationFederal University of Santa CatarinaFlorianópolisBrazil

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