Reconfiguration Strategies for Environmentally Powered Devices: Theoretical Analysis and Experimental Validation

Item Type: Proceeding
MIUR type: Proceedings > Proceedings
Title: Reconfiguration Strategies for Environmentally Powered Devices: Theoretical Analysis and Experimental Validation
Authors string: A. Susu; M. Magno; Acquaviva A.; D. Atienza; G. De Micheli
University authors:
Page Range: pp. 341-360
Journal or Publication Title: LECTURE NOTES IN COMPUTER SCIENCE
Referee type: Not specified type
Publisher: Springer
ISSN: 0302-9743
Volume: 4050
Event Title: First International Conference on High-Performance Embedded Architectures and Compilers, HiPEAC 2005
Event relevance: National
Abstract: Environmental energy is becoming a feasible alternative to traditional energy sources for ultra low-power devices such as sensor nodes. These devices can run reactive applications that adapt their control flow depending on the sensed data. In order to reduce the energy consumption of the platform and also to meet the timing constraints imposed by the application, we propose to dynamically reconfigure the system through the use of Field Programmable Gate Array (FPGA) fabric such that it executes more efficiently the tasks of the application. In this paper we present a new approach that enables the designer to efficiently explore different reconfiguration strategies for environmentally powered systems. For this we define a stochastic model of a harvesting video sensor node that captures the behavior of the node and of its environment. We use this approach to investigate the impact of different reconfiguration strategies for a video surveillance node on metrics of interest, such as the expected lifetime or downtime of the system. Then, we create a hardware implementation of an energy-aware reconfiguration manager on top of a custom multi-FPGA board. Our results show that the systems improve their processing capabilities if suitable reconfiguration strategies are defined for their respective configuration environments
Date: 2007
Status: Published
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Departments (original): UNSPECIFIED
Departments: DAUIN - Department of Control and Computer Engineering
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    Date Deposited: 22 Jul 2009 12:07
    Last Modified: 11 Jul 2014 00:07
    Id Number (DOI): 10.1007/978-3-540-71528-3_21
    Permalink: http://porto.polito.it/id/eprint/2274899
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