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Last name: SENTIEYS
First name: Olivier
National audience
Future Internet of Things is paving the way for the proliferation of Wireless Sensor Networks (WSNs). To overcome the limited energy in batteries, WSN nodes are relying on everlasting environmental energy. Moreover, a Power Manager (PM) is also embedded in each WSN node to guarantees that the total consumed energy is equal to the harvested...
In this paper, a multi-source power manager (PM) is applied using different types of energy harvesting WSN. Specifically, this PM is embedded in both thermal and solar-powered WSN in order to adapt the consumed energy of the node by changing its wake-up period according to the harvested energy. Experimental results performed on real WSN...
In this paper, a multi-source power manager (PM) is applied using different types of energy harvesting WSN. Specifically, this PM is embedded in both thermal and solar-powered WSN in order to adapt the consumed energy of the node by changing its wake-up period according to the harvested energy. Experimental results performed on real WSN...
To overcome the limited energy in battery-powered wireless sensor networks (WSNs), harvested energy is considered as a potential solution to achieve autonomous systems. A power manager (PM) is usually embedded in wireless nodes to adapt the computation load by changing their wake-up interval according to the harvested energy. In order to...
To design an autonomous Wireless Sensor Network(WSN), the harvested energy from environmental sources hasbeen considered as a potential solution for long-term operations.A power manager embedded in the energy harvesting WSNsadapts the power consumption and computation loads accordingto the harvested energy to obtain a theoretically infinite...
To design an autonomous Wireless Sensor Network(WSN), the harvested energy from environmental sources hasbeen considered as a potential solution for long-term operations.A power manager embedded in the energy harvesting WSNsadapts the power consumption and computation loads accordingto the harvested energy to obtain a theoretically infinite...
To design autonomous wireless sensor networks (WSNs) with a theoretical infinite lifetime, energy harvesting (EH) techniques have been recently considered as promising approaches. Ambient sources can provide everlasting additional energy for WSN nodes and exclude their dependence on battery. In this article, an efficient energy harvesting...
National audience
Exploiting energy from the environment to extend the system lifetime of Wireless Sensor Network (WSN), especially thermal energy, is considered as a promising approach. When considering self-powered systems, the Power Manager (PM) plays an important role in energy harvesting WSNs. Instead of minimizing the consumed energy as in the case of...
National audience
Minimizing the energy consumption and silicon area are usually two major challenges in the design of battery-powered embedded computing systems. Dynamic and Partial Reconfiguration (DPR) opens up promising prospects with the ability to reduce jointly performance and area of compute-intensive functions. However, partial reconfiguration...
National audience
Nowadays, System-on-Chip architectures are composed of several execution resources which support complex applications. As it shares silicon area and limits the cost of the global circuit, the embedding of a reconfigurable resource in these SoC provides flexibility to the hardware. In this case, several implementations of the same algorithm,...
International audience
Although fairly known for a long time, the vast potential of Dynamic and Partial Reconfigu-ration (DPR) for high energy efficiency is still difficult to exploit, for reasons that are more methodological than purely technical. This work addresses this problem and provides a contri-bution by seeking to improve energy efficient deployment and...
This paper exhaustively explores the potential energy efficiency improvements of Dynamic and Partial Reconfiguration (DPR) on the concrete implementation of a H.264/AVC video decoder. The methodology used to explore the different implementations is presented and formalized. This formalization is based on pragmatic power consumption models of...
In the context of embedded systems development, two important challenges are the efficient use of silicon area and the energy consumption minimization. Hardware accelerated tasks allow to reduce energy consumption of several orders of magnitude, compared to software execution, but these tasks require silicon area and consume power even when...
To extend the system lifetime of WSN, energy harvesting techniques have been considered as potential solutions forlong-term operations. Instead of minimizing the consumed energy as for the case of battery-powered systems, the harvesting node is adapted to Energy Neutral Operation (ENO) to achieve a theoretically innite lifetime. Therefore,...
To extend the system lifetime of WSN, energy harvesting techniques have been considered as potential solutions forlong-term operations. Instead of minimizing the consumed energy as for the case of battery-powered systems, the harvesting node is adapted to Energy Neutral Operation (ENO) to achieve a theoretically innite lifetime. Therefore,...
System lifetime is the crucial problem of Wireless Sensor Networks (WSNs), and exploiting environmental energy provides a potential solution for this problem. When considering self-powered systems, the Power Manager (PM) plays an important role in energy harvesting WSNs. Instead of minimizing the consumption energy as in the case of battery...
National audience
GRECO is a french ANR (National Research Agency) project whose aim is to design an energy efficient wireless platform that would be totally autonomous thanks to energy harvesting capabilities and adaptive power managing. To reach this goal, GRECO partners are developing a complete modeling that will be used to evaluate the different power...