- The simulation consists of viewing the illuminance distributions in an x-y plane, with the z dimension representing the illuminance intensity. The goal is to find the best architecture for a more uniform illuminance.
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The first simulation was of classic led ring, with the circular geometry. The under parameters were use:
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Distance(z) = 1.0 m
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N. Leds = 10
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Ring Radius = 0.03 m
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The result make sense when compar with the refer article. The uniformity of this arquitethure is bad, because have a great intensity in the center.
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In the real situation, more than one LED ring is used, in this case four will be used to promote a uniform light. In this way, the simulation gains a new feature: the position and angle that each LED ring must have.
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Position(x,y) = ± 2 m, ± 2 m
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Angle(β) = 45 degrees
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Distance(z) = 1.0 m
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N. Leds = 10
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Ring Radius = 0.03 m
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The image above corresponds to the lighting of the arena provided by the 4 LED rings when they have the best distribution radius (r = 1.1971)
The image above corresponds to the arena lighting provided by the 4 LED rings when they have the current radius (r = 0.03)
The LEDs do not necessarily need to be at 90 degrees to the ring plane, they can have larger or smaller angles depending on the need.
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Larger angles increase the final radius of the ring in the actuation plane, in contrast, they decrease the concentration of light in the center.
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Smaller angles decrease the final radius of the ring in the actuation plane, thus intensifying the light in the center.
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In the image above, the actuation angle was increased, making the distribution more uniform, even with a small ring radius.
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For this purpose, actuation planes were created for each of the LEDs; in this example, the ring was composed of only four LEDs.
