Department of Electrical and Electronics Engineering, Gaziantep University, Gaziantep, Turkey
Research Article
Investigation of the Effect of Light PWM Frequency on the Object in Terms of Human Visual Comfort
Author(s): Mehmet Ali Ozcelik*
Light Emitting Diodes (LEDs) play an essential role in lighting and green earth activities because of
their high efficiency, longevity and reduction of carbon dioxide emissions in illumination. However,
the brightness level of LED light sources must be adjusted appropriately for backlight source or
illumination, so Pulse Amplitude Modulation (PWM) is a commonly used method of LED control. This
paper experimentally investigated the human visual comfort effect of the light effect obtained using
different PWM frequencies on an object in a sensor-based intelligent lighting system. The histograms
of the object were created according to the light frequency and the results were discussed... View More»
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