Design and Implementation of an LED Automatic Lighting System for Plant Factories

This paper proposed a light-emitting diode (LED) automatic lighting system for plant factories. This system can achieve the simultaneous effects of automatic dimming and seven-segment mixing; the light intensity and color can therefore be adjusted according to the properties of the plants to increas...

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Bibliographic Details
Published in:IEEE photonics journal 2021-08, Vol.13 (4), p.1-9
Main Author: Wu, Yu-En
Format: Article
Language:English
Subjects:
Analog to digital conversion
automatic dimming
automatic light mixing
Automatic lighting System
Bluetooth
Buck converters
Circuits
Color
dc-dc converter
Dimming
Factories
Inductance
Licenses
Light emitting diodes
Light sources
Lighting
Lighting systems
Luminous intensity
Photosensitivity
Production facilities
Pulse duration modulation
Pulse width modulation
Segments
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Summary:This paper proposed a light-emitting diode (LED) automatic lighting system for plant factories. This system can achieve the simultaneous effects of automatic dimming and seven-segment mixing; the light intensity and color can therefore be adjusted according to the properties of the plants to increase crop harvest. The operation method comprises detection of the light source through a photosensitive diode CdS, and sending the analog value obtained from the light intensity to the single chip dsPIC30F4011 for analog-to-digital conversion. This single chip stores the digital value in the internal pulse width modulation (PWM) register and outputs it to the dimming circuit to achieve the effect of automatic dimming. In addition, the operator can also connect to the system using smartphone Bluetooth and an ATmega328 single chip and manually select the color of the light source through the human-machine interface. The ATmega328 chip receives the operating signal and transfers it to the dsPIC30F4011, which automatically changes the PWM output channel to achieve seven-segment light mixing.
ISSN:1943-0655
1943-0655
1943-0647
DOI:10.1109/JPHOT.2021.3094361