Abstract

This paper developed light-emitting diode (LED) and laser models suitable for the design of uniform surface irradiation systems that use computer algorithms. During the evaluation factor for a two-dimensional particle swarm algorithm, the effects of energy utilization and uniformity were comprehensively considered and LED and laser models were given. The optimal design method was used with a laser and LED hybrid light source. According to the lighting requirements of lettuce, three types of lighting were simulated for the LED and laser models, and the best simulation results were selected for experiments. The experiment verified the feasibility of the above method and obtained a laser and LED hybrid lighting system with an energy utilization rate of about 78% and a uniformity of up to 85%.

Highlights

  • The reduction of arable land and the rapid population growth pose severe challenges for the global food supply

  • In order to solve the above irradiance model, established a particle swarm algorithm suitable for this optical model, added a problems,comprehensive this paper developed hybrid laser and light-emitting diode (LED) models suitable for plant lighting

  • In order to solve the above problems, this paper developed hybrid laser and LED models suitable for plant lighting

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Summary

Introduction

The reduction of arable land and the rapid population growth pose severe challenges for the global food supply. Scholars have paid attention to the use of artificial light sources to provide energy for plants. With the development of light-emitting diode (LED) technology, public interest in the use of LED lighting in plant factories has surged because of its spectrum similar to plant absorption spectra and high photoelectric conversion efficiency [3,4,5,6]. Many scholars have conducted in-depth research on plant factory lighting technology and achieved significant progress [7,8,9,10,11]

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