Investigation of optical intensity in indoor visible light communication with different LEDs array

Hsi-Chao Chen; Cheng-Jyun Liou; Yang Chou; Syuan-Ruei Siao; I-Ju Liu; Wei-Cheng Lai

doi:10.1117/12.2060523

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25 September 2014 Investigation of optical intensity in indoor visible light communication with different LEDs array

Hsi-Chao Chen, Cheng-Jyun Liou, Yang Chou, Syuan-Ruei Siao, I-Ju Liu, Wei-Cheng Lai

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Proceedings Volume 9190, Thirteenth International Conference on Solid State Lighting; 919017 (2014) https://doi.org/10.1117/12.2060523
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

The purpose of this study was look for the optimized design of light source array applied in indoor lighting combined with visible light communication. The design of different light source arrays: circle, radiation, and rectangle were simulated and experimental for lighting, and then actually be used in visible light communication. The simulation results showed the rectangle array has the largest illumination flux than other arrays. And its total flux was 2662.3 lm; maximum illumination was 338 lx, and the effective illumination area of above 200 lx with a cover area of 2090 mm2. The measurement results also exhibited the rectangle array has the largest illumination flux than other arrays. Its total luminous flux is 2538.95 lm, and the effective illumination area of above 200 lx with a cover area of 2078 mm². The measurement and simulation results have the same trend and the curve similarity was more than 99% by normalized cross correlation. Finally, combined with the signal transfer analysis of visible light communication, a measurement system was built with the input signal frequency of 1k Hz and the transmission distance of 1.8m. The receive waveform of rectangle array was best in the transport of free space to other arrays and the divergence angle could reaches to 85°.

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Hsi-Chao Chen, Cheng-Jyun Liou, Yang Chou, Syuan-Ruei Siao, I-Ju Liu, and Wei-Cheng Lai "Investigation of optical intensity in indoor visible light communication with different LEDs array", Proc. SPIE 9190, Thirteenth International Conference on Solid State Lighting, 919017 (25 September 2014); https://doi.org/10.1117/12.2060523

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