X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/Sensornets15.git/blobdiff_plain/b8c6a5f1e74fdd26f663b1c0dd6454e15e84df73..34d0f50338c2813bf9cc5b22535e90523d3a5926:/ahswn.tex?ds=inline diff --git a/ahswn.tex b/ahswn.tex index e2ef23c..d66df5d 100644 --- a/ahswn.tex +++ b/ahswn.tex @@ -18,7 +18,7 @@ \institute{FEMTO-ST Institute, UMR 6174 CNRS, University of Franche-Comt\'e, France} -\def\received{Received 21 October 2014} +\def\received{Received 23 October 2014} \maketitle @@ -437,19 +437,20 @@ experimental results which are relevant. The nodes are deployed on a field of interest of $(50 \times 25)~m^2 $ in such a way that they cover the field with a high coverage ratio. -We chose as energy consumption model the one proposed proposed \linebreak -by~\cite{ChinhVu} and based on ~\cite{raghunathan2002energy} with slight -modifications. The energy consumed by the communications is added and the part -relative to a variable sensing range is removed. We also assume that the nodes -have the characteristics of the Medusa II sensor node platform -\cite{raghunathan2002energy}. A sensor node typically consists of four units: a -MicroController Unit, an Atmels AVR ATmega103L in case of Medusa II, to perform -the computations; a communication (radio) unit able to send and receive -messages; a sensing unit to collect data; a power supply which provides the -energy consumed by node. Except the battery, all the other unit can be switched -off to save energy according to the node status. Table~\ref{table4} summarizes -the energy consumed (in milliWatt per second) by a node for each of its possible -status. +We chose as energy consumption model the one proposed +by~\cite{ChinhVu} and based on ~\cite{raghunathan2002energy} with +slight modifications. The energy consumed by the communications is +added and the part relative to a variable sensing range is removed. We +also assume that the nodes have the characteristics of the Medusa II +sensor node platform \cite{raghunathan2002energy}. A sensor node +typically consists of four units: a MicroController Unit, an Atmels +AVR ATmega103L in case of Medusa II, to perform the computations; a +communication (radio) unit able to send and receive messages; a +sensing unit to collect data; a power supply which provides the energy +consumed by node. Except the battery, all the other unit can be +switched off to save energy according to the node status. +Table~\ref{table4} summarizes the energy consumed (in milliWatt per +second) by a node for each of its possible status. \begin{table} \caption{Energy consumption model.} @@ -527,7 +528,7 @@ the efficiency of our approach: where $n$ is the number of covered grid points by active sensors of every subregions during the current sensing phase and $N$ is the total number of grid points in the sensing field. In our simulations, we have a layout of $N = 51 - \times 26 = 1326$ grid points. + \times 26 = 1,326$ grid points. \item {{\bf Energy Consumption}:} energy consumption (EC) can be seen as the total amount of energy consumed by the sensors during $Lifetime_{95}$ @@ -591,7 +592,7 @@ nodes, and thus enables the extension of the lifetime. \begin{center} \scalebox{0.5}{\includegraphics{R/CR.pdf}} \end{center} -\caption{Coverage ratio} +\caption{Coverage ratio.} \label{fig3} \end{figure}