DocumentCode
3090327
Title
Fluid Queue Models of Battery Life
Author
Jones, Gareth L. ; Harrison, Peter G. ; Harder, Uli ; Field, Tony
Author_Institution
Dept. of Comput., Imperial Coll. London, London, UK
fYear
2011
fDate
25-27 July 2011
Firstpage
278
Lastpage
285
Abstract
We investigate how a power-save mode affects the battery life of a device subject to stochastically determined charging and discharging periods. We use a multi-regime fluid queue, imposing a threshold at some value. When the power level falls below the threshold, (for example, 20% of charge remaining) a power-save mode is entered and the rate of discharge decreased. An expression for the Laplace transform of the battery life´s probability density function is found and inverted numerically in particular instances. We show the life of battery can be significantly improved by the introduction of the power-saving threshold.
Keywords
Laplace transforms; probability; queueing theory; secondary cells; Laplace transform; battery life; fluid queue models; power-save mode affects; power-saving threshold; probability density function; rechargeable batteries; Batteries; Discharges; Equations; Laplace equations; Markov processes; Mathematical model; Reservoirs;
fLanguage
English
Publisher
ieee
Conference_Titel
Modeling, Analysis & Simulation of Computer and Telecommunication Systems (MASCOTS), 2011 IEEE 19th International Symposium on
Conference_Location
Singapore
ISSN
1526-7539
Print_ISBN
978-1-4577-0468-0
Type
conf
DOI
10.1109/MASCOTS.2011.61
Filename
6005396
Link To Document