نتایج جستجو برای: lighting control

تعداد نتایج: 1343903  

Journal: :health scope 0
alireza khorram health promotion research center, zahedan university of medical sciences, zahedan, ir iran maryam yusefi msc of environmental science, university of birjand, ir iran; msc of environmental science, university of birjand, ir iran. tel: +98-563 244 9152, fax: +98-563 244 3101 samaneh keykha health promotion research center, zahedan university of medical sciences, zahedan, ir iran

Journal: :international journal of smart electrical engineering 0
armaghan rahimi student of islamic azad university central tehran branch fardad farokhi biomedical engineering department, islamic azad university central tehran branch shahram javadi electrical engineering department, islamic azad university central tehran branch

smart home is composed of several controllers with different plants in control. if each controller works independently, without considering the mutual effect of the others in the control process, the whole system could definitely not converge to an optimum desired status and may not ever reach the demanded condition. the function of different controller system may has conflict in some condition...

2011
Matthew Aldrich Joseph A. Paradiso Matthew H. Kane Christian Wetzel Byungkun Lee

The inherent control flexibility implied by solid-state lighting – united with the rich details offered by sensor networks – prompts us to rethink lighting control. In this research, we propose several techniques for measuring work surface illuminance and ambient light using a sensor network. The primary goal of this research is to measure work surface illuminance without distraction to the use...

2008
T. Hiroyasu

We are doing research and development of an intelligent lighting system. In the intelligent lighting system, the algorithm which controls lighting fixtures is important. In this research, we examine how to grasp the position relation between the lighting and the illuminance sensors with sufficient accuracy, and we propose a lighting control algorithm which estimates accurate position relation b...

2010
Steffen Leonhardt Nan Zhao

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 ...

Journal: :international journal of architecture and urban development 0
fahimeh motazedian ph.d. candidate of architecture, department of art and architecture, science and research branch, islamic azad university, tehran, iran mohammadjavad mahdavinejad associate professor, department of art and architecture, tarbiat modares university, tehran, iran. farah habib professor, department of art and architecture, science and research branch, islamic azad university, tehran, iran. darab diba professor, department of art and architecture, central tehran branch, islamic azad university, tehran, iran.

buildings play an important role in the energy demand sector. due to the increase of environmentalconcerns and renewable energy sources restriction, lighting control systems will play an important role in the reductionof energy consumption of the lighting without impeding comfort goals. lighting control systems can control lightingconsumption according to the type of building, adequate luminanc...

2007
Fumiaki Obayashi Misa Kawauchi Masaaki Terano Kazuhiro Tomita Yoko Hattori Hiroshi Shimoda Hirotake Ishii Hidekazu Yoshikawa

A lighting control method has been proposed which adjusts the circadian rhythms of office workers and eliminates a decrease in the arousal level in the afternoon by exposing a high intensity of light in the morning in order to improve their productivity. As a result, it was found that the task performance of the CPTOP test under 2,100 lx was significantly higher than that under 700 lx and more ...

Journal: :Journal of the Illuminating Engineering Institute of Japan 1998

Journal: :پژوهش های علوم دامی ایران 0
مرضیه رحمانی محمد امیر کریمی ترشیزی رسول واعظ ترشیزی

. 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...

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