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PixelSkin02 junio 11, 2008

Posted by christian saucedo in Technology research in surfaces.
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Tipo.  Desarrollo tecnológico . superficie interactiva

Autor. Sachin Anshuman

Investigación y desarrollo. Orangevoid

Año. 2006

Web. http://www.orangevoid.org.uk

Imágenes. http://www.orangevoid.org.uk/index.php?option=com_content&task=view&id=26&Itemid=36

Video. http://www.orangevoid.org.uk/index.php?option=com_content&task=view&id=26&Itemid=36

Vía. Daniel Espeta García, PASAJES construcción, C31, MATERIALES, septiembre 2007, año 03

Descripción

Dedicado al desarrollo de superficies interactivas en arquitectura, Sachin Anshuman, que gestiona el sitio web Orangevoid.org.uk, desde donde presenta sus trabajos bajo el título Advanced Surfaces Architecture, desarrolla su tesis de trabajo en varios artículos y proyectos.

PixelSkin02 utiliza aleaciones metálicas con memoria de forma, para mover un conjunto de paneles triangulares. Dado que la apertura de los polígonos es regulable, lo es por tanto la transparencia de la fachada; de esta manera, cada set de triángulos actua como si se tratase de un pixel con intensidad de luz regulable. Esta matríz de actuadores componen una superficie de “ventanas dinámicas” permitiendo la visión o controlando las condiciones de iluminación en el edificio segun la visión de los individuos. También puede generar imágenes de baja resolución y frecuencia de refresco.

El proyecto tiene por objeto encontrar soluciones a un problema común a las superficies arquitectónicas contemporáneas, donde el uso de ventanas convencionales (para vistas, contacto visual, transparencia, luz diurna, etc). chocan con los requerimientos exteriores de comunicación, publicidad y escaparatismo, a menudo de mayor importancia. Lo que que supone un enfrentamiento continuo entre opacidad y transparencia.

Description

PixelSkin02 is extension of the first version. This prototype uses shape memory alloy (SMA) to actuate a set of four triangular panels. Depending on the opening coefficient each set of four panels acts as a pixel (255 states between fully open to fully closed). PixelSkin is a heterogeneous smart surface research carried out as part of the PhD project. The surface could create dynamic windows allowing view or controlling internal lighting condition across the building membrane in response to subject states and their positions. The surface could also be used simultaneously to generate low resolution images, low refresh rate videos or patterns. This project deals with finding the solutions to a common problem encountered by contemporary architectural surfaces; where interior functions associated with a conventional window (i.e. vista, visual connections, transparency, sunlight etc) are faced with an acute compromise as outer and often more important functions such as communication, advertising and display are given priority. most such means are overlaid against the transparent window announcing a continual friction between opacity and transparency. Pixel Skin is based on a multi-layered electrographic surface architecture. As internal environment looses its authority over external surface, Pixel Skin suggests new solutions to re appropriate architectural surfaces through augmented media.

Physical prototype

Movie clip shows the prototype unit of 2X2 pixels. Each pixel consists of 4 triangular panels actuated by 200mA SMA wire. A micro controller controls the current supplied to each set of 4 panels 20 times a second. Multiplexing allows to individually control opening-coefficients for each pixel, generating this way a surface-wide control mechanism that can be used to simulate low-resolution images, patterns or animations, or to simply control internal lighting conditions.

Interactive surface simulation

The Applet shown below is a 3DP JAVA simulation of the system. This simulation in particular sets the pattern type and its speed in response to live weather prediction for the day. While generating dynamic patterns, the system also maintains overal surface opening required for that day allowing sufficient light inside the building. This example takes live weather information for London city as supplied by BBC every 3 hours. The XML data is screen-scrapped and routed via third party server before being fed into the applet. Note: Processor extensive applet – Fast processor with good graphics card recommended.

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