Design of Low Cost Programmable LED Lighting System for Smart Buildings

Smart LED based lighting infrastructure have significant advantages over traditional lighting hardware due to their capability of producing tunable light spectra on demand. Intelligent luminaires interface seamlessly with any intelligent operating systems to optimize lighting either to control the human circadian rhythm (i.e. Human-Computer Interaction), or for more effective machine vision applications (i.e. Machine-to-Machine communication). The main challenge in the design of a multichannel smart lighting system is to produce sufficient intensity uniformity over the illuminated region by all channels, while simultaneously maintaining affordability. This paper outlines the design and fabrication of a programmable LED lighting system to achieve these aims. It presents a nine channel lighting design using low cost discrete LEDs.