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Publications associées (29)

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Ultra-Low Power Estimation of Heart Rate Under Physical Activity Using a Wearable Photoplethysmographic System

David Atienza Alonso, Srinivasan Murali, Francisco Javier Rincon Vallejos, Elisabetta De Giovanni

In the last years, the need for enhancing health and preventing problems with remote monitoring is increasing. A non-invasive low-cost technique for processing bio-signals and monitoring vital parameters, at rest and during physical activity, is the use of ...

IEEE Press2016

Contribution to the Ultra-Fast Charging of Electric Vehicles : The Configurable Modular Multilevel Converter (CMMC)

Rosa Martel Danoary Tsirinomeny

It is generally agreed that one of the drawbacks of a conventional vehicle is the inability to always reach the best operating point of the engine and the inability to regenerate the kinetic energy. Meaning, even with the help of the gearbox or automatic t ...

EPFL2016

Worst-Case Optimal Battery Filling Policies With Constrained Adjustable Service

Jean-Yves Le Boudec, Dan-Cristian Tomozei

We study battery filling policies with hard deadlines when the supply of energy can be modulated. This occurs for example with an electric plug-in vehicle using an adjustable electricity service for charging; such a service is offered in some countries as ...

Institute of Electrical and Electronics Engineers2015

Ultra-Low Power Design of Wearable Cardiac Monitoring Systems

David Atienza Alonso, Giovanni Ansaloni, Srinivasan Murali, Francisco Javier Rincon Vallejos, Ruben Braojos Lopez, Hossein Mamaghanian, Alair Dias Junior

This paper presents the system-level architecture of novel ultra-low power wireless body sensor nodes (WBSNs) for real-time cardiac monitoring and analysis, and discusses the main design challenges of this new generation of medical devices. In particular, ...

IEEE/ACM Press2014

Ultra-Low Power Design of Wearable Cardiac Monitoring Systems

David Atienza Alonso, Giovanni Ansaloni, Srinivasan Murali, Francisco Javier Rincon Vallejos, Ruben Braojos Lopez, Hossein Mamaghanian, Alair Dias Junior

IEEE2014

Equation of state of liquid mercury to 520 K and 7 GPa from acoustic velocity measurements

Livia Eleonora Bove Kado

Ultrafast acoustics measurements on liquid mercury have been performed at high pressure and temperature in a diamond anvil cell using picosecond acoustic interferometry. We extract the density of mercury from adiabatic sound velocities using a numerical it ...

American Institute of Physics2014

Power supply energy optimization for ultra low-power wireless sensor nodes

Pierre-André Farine, Alexis Boegli, Mitko Tanevski

The wireless sensor nodes are most energy-efficient when they operate at the minimal operating voltage. The nominal voltage of the batteries used is often significantly higher. This paper analyzes DC-DC power conversion from the point of view of ultra low- ...

IEEE Instrumentation and Measurement Society2013

Hydrogen bubbles and the growth morphology of ramified zinc by electrodeposition

Giorgio Margaritondo

Real-time X-ray microscopy was used to study the influence of hydrogen-bubble formation on the morphology of ramified zinc electrodeposit. The experimental results show that when intense hydrogen bubbling occurs at high potential, the morphology of the ram ...

2008

A 300 W solar chemical pilot plant for the carbothermic production of zinc

In the framework of the EU-project SOLZINC, a 300-kW solar chemical pilot plant for the production of zinc by carbothermic reduction of ZnO was experimentally demonstrated in a beam-down solar tower concentrating facility of Cassegrain optical configuratio ...

2007