An improved light efficiency LED array design via increasing uniformity for pea sprouts

IF 5.3 1区农林科学 Q1 AGRICULTURAL ENGINEERING

Biosystems Engineering Pub Date : 2025-09-22 DOI:10.1016/j.biosystemseng.2025.104290

Li Du , Yang Xu , Can Wang , Yiyi Chen , Junhua Zhang , Bin Ma , Danyan Chen

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引用次数: 0

Abstract

Light distribution is an important factor affecting plant growth under facility lighting. However, traditional lighting provides uneven illumination, which increases the difficulty of cultivation management and creates challenges in standardised plant production. Achieving the best light environment is highly significant for high-efficiency production. To effectively address uneven light distribution in the planting layer, this study proposed a high light efficiency LED array design that increases light distribution uniformity based on the improved genetic algorithm. This design has been verified by optical simulation, spectrometer measurement and pea sprout cultivation. The simulation results showed that the illumination uniformity of the optimised LED array and traditional square LED array were 91.7 % and 85.7 %, respectively. The uniformity of the illuminance measured by the spectrometer for two LED arrays was 92.5 % and 80.2 %, respectively. Furthermore, the effects of the two LED arrays on the growth of pea sprouts were compared. The total light intensity of the optimised LED array was reduced by 20.1 % lower; however, the yield of the pea sprouts increased by 8.6 % higher. The light intensity required to produce pea sprouts per unit mass was 26.5 % lower, while the energy and economic efficiency improved. Therefore, the LED array designed based on the improved genetic algorithm has high illumination uniformity and light use efficiency and presents a novel method for improving pea sprout production and lighting optimisation strategy.

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一种提高豌豆芽均匀性的光效LED阵列设计

在设施照明条件下，光分布是影响植物生长的重要因素。然而，传统照明带来的光照不均匀，增加了栽培管理的难度，给植物标准化生产带来了挑战。实现最佳光环境对高效生产具有重要意义。为了有效解决种植层光分布不均匀的问题，本研究提出了一种基于改进遗传算法的高光效LED阵列设计，提高了光分布均匀性。该设计已通过光学模拟、光谱仪测量和豌豆苗栽培验证。仿真结果表明，优化后的LED阵列与传统方形LED阵列的照度均匀度分别为91.7%和85.7%。两种LED阵列的照度均匀度分别为92.5%和80.2%。此外，还比较了两种LED阵列对豌豆苗生长的影响。优化后的LED阵列的总光强降低了20.1%；然而，豌豆芽的产量却高出8.6%。生产单位质量豌豆芽所需的光强降低了26.5%，提高了能源效益和经济效益。因此，基于改进遗传算法设计的LED阵列具有较高的照明均匀性和光效，为提高豌豆芽产量和优化照明策略提供了一种新的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Biosystems Engineering 农林科学-农业工程

CiteScore

10.60

自引率

7.80%

发文量

239

审稿时长

53 days

期刊介绍： Biosystems Engineering publishes research in engineering and the physical sciences that represent advances in understanding or modelling of the performance of biological systems for sustainable developments in land use and the environment, agriculture and amenity, bioproduction processes and the food chain. The subject matter of the journal reflects the wide range and interdisciplinary nature of research in engineering for biological systems.