Shading systems have the potential to reduce energy consumption of electric lighting and improve visual comfort. Various automated control systems of shading device and electric lighting have been widely used. However, existing lighting and shading systems typically operate independently, i.e., information is not shared, and thus system performance is not optimal. Therefore, integrated control ...

Intelligent lighting systems employ dimmable luminaires, photosensors, and occupancy sensors to adapt to daylight and user presence conditions in indoor environments. By providing the illumination required for users and no more, significant energy savings can be made. The state of the art in these lighting systems currently relies on dedicated communication hardware such as radio networking mod...

ZigBee Light Link (ZLL) is the low-power mesh network standard used by connected lighting systems, such as Philips Hue, Osram Lightify, and GE Link. These lighting systems are intended for residential use but also deployed in hotels, restaurants, and industrial buildings. In this paper, we investigate the current state of security in ZLL-based connected lighting systems. We extend the scope of ...

General illumination using LEDs has enabled designers to have precise control of the intensity and color of an illuminated area. In this work, I investigate how these systems can dynamically adjust to create optimal lighting conditions in the built environment. By incorporating environmental feedback into a system control loop, i.e., illuminance or luminance measurements, the precise intensity ...

Lighting control is in the midst of radical change. Presentday state-of-the-art lighting systems tend to be extremely complex. They exhibit very flexible actuation possibilities with many degrees of freedom that can be exploited to answer dynamiclighting needs. However, user interfaces to these systems are woefully lacking. They are frequently denigrated to a panel of buttons that select partic...

The use of natural light for illumination in buildings has great potential for both energy conservation and increased human comfort and worker productivity. A solar lighting industry is evolving that provides some of the components needed for solar lighting systems. Complete solar lighting systems are available from a few manufacturers for specialty applications. Currently the “industry” is a l...

. light is an environmental factor, which has profound influences on broilers performance and frequently overlooked management practices. this study was conducted to compare the effects of different lighting programs on growth, carcass parts and economical performance using 320 one day–old broilers (arian 386) in completely randomized design with 4 treatments and 8 replicates per each treatment...