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Nowadays, multi-color LEDs are widely used in our daily life. One popular application is adjusting LED light color according to different scenes, e.g. to enhance visual effect. However, there is inevitably other light from surrounding environment, e.g. daylight. If the LED light color is rendered without considering the influence of ambient light, the resulted light color can differ from the desired...
SSL systems are used more and more in our daily life. Because of their high reliability and controllability, SSL systems can be extended to more functionalities than conventional lighting. In this work, we propose a method to achieve accurate indoor localization by using an SSL system with multiple LED lamps. Simulation studies have verified the effectiveness and the localization accuracy achieved...
This paper presents a system identification based modeling method for Lighting-emitting diode (LED) luminaires. The dynamics of luminaires in response to control inputs are considered in the identified models. For the system identification, a set of pseudorandom binary control signals are used as dimming inputs to excite the luminaire. Using the sampled light output from the luminaire, and by subspace...
In this paper we present our preliminary results obtained from implementing a SSL system on the facade of EWI faculty building in Delft University of Technology as shown in Figure 1. Two hundred intelligent SSL modules are planed to be deployed. All the modules are controlled via wireless links. We propose solutions for challenges such as hardware and software designs. Experiences learned are also...
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