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Energieeffiziente Bürobeleuchtung - Das Projekt "Green Lighting"

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A Multi-sensor Office-building Database for Experimental Validation and Advanced Control Algorithm Development

Nicolas Morel, Nikolaos Zarkadis

Data from multiple sensors and actuators has been recorded from December 2001 to March 2008 at the LESO-PB building of the EPFL campus, using the EIB/KNX bus standard. Sensors and actuators provided data on room temperature, presence, lighting level, windo ...

2014

1kHz 2D silicon retina motion sensor platform

Dario Floreano

This paper proposes an optical motion sensor aimed towards small robotic platforms. It incorporates a 20×20 pixel continuous-time CMOS silicon retina vision sensor with pixels that have local gain control and adapt to background lighting and a DSP microcon ...

IEEE2014

Advanced Control of Electrochromic Windows

Nicolas Morel, Nikolaos Zarkadis

In our research we use the technology of electrochromic (EC) glazing to maximize the use of daylight and minimize the energy consumption in buildings while preserving visual and thermal comfort of the users. We propose an advanced automatic control of EC w ...

EPFL Solar Energy and Building Physics Laboratory (LESO-PB)2013

Low Current Density Driving Leads to Efficient, Bright, and Stable Green Electroluminescence

Mohammad Khaja Nazeeruddin, Julien Edouard Frey

Electroluminescent devices have the potential to reshape lighting and display technologies by providing low-energy consuming solutions with great aesthetic features, such as flexibility and transparency. In particular, light-emitting electrochemical cells ...

Wiley-VCH Verlag Berlin2013

A review and analysis of parallel goniophotometry

Marilyne Andersen, Boris Clément Karamata

A reliable computer simulation of natural and artificial lighting of an indoor environment requires the thorough knowledge of the angular intensity distribution of light scattered or emitted by the various objects involved such as the illuminated surfaces, ...

2013

Daylighting, Artificial Lighting and Non-Visual Effects Study for a Residential Building

Marilyne Andersen, Nicolas Roy

The study uses a domestic dwelling as the setting to investigate and explore the applicability of daylighting metrics for residential buildings. The metrics address daylight provision for task and electric lighting usage. In addition to these it also inves ...

2012

Influence of control patterns for lighting and shading systems on the predicted energy performance of buildings

Windows are one of the most complex determinants of the office indoor environment and have a significant impact on the overall energy demand for electric lighting, heating and cooling, which typically account for more than 50% and often more than 70% of th ...

Faculty of Engineering, University of Porto, Portugal2012

Lighting and human needs in built spaces

Marilyne Andersen

This presentation will discuss how recent findings in photobiology about the correlation between lighting and the human circadian system can prospectively be applied to architectural design, with a focus on healthcare and housing environments. Outcomes of ...

2012

Face Recognition with Disparity Corrected Gabor Phase Differences

We analyze the relative relevance of Gabor amplitudes and phases for face recognition. We propose an algorithm to reliably estimate offset point disparities from phase differences and show that disparity corrected Gabor phase differences are well suited fo ...

Springer Berlin2012

Advanced Window and Lighting Technologies in net Zero Energy Buildings

Jean-Louis Scartezzini

Light has an important visual and non-visual impact on humans. Most of our information exchange, especially within office working spaces, occurs through it, our circadian rhythms are directly influenced by its presence. On the other hand, artificial lighti ...

2011