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A Static Laser Weeding Device and System Based on Fiber Laser: Development, Experimentation, and Evaluation.

Authors :
Yu, Zhongyi
He, Xiongkui
Qi, Peng
Wang, Zhichong
Liu, Limin
Han, Leng
Huang, Zhan
Wang, Changling
Source :
Agronomy; Jul2024, Vol. 14 Issue 7, p1426, 17p
Publication Year :
2024

Abstract

To demonstrate the feasibility and improve the implementation of laser weeding, a static movable lift-adjustable closed fiber laser weeding device and system have been developed, followed by experiments and performance evaluations. Physical experiments were conducted on the energy required for laser cutting of weed stems, targeting four common larger weeds (Chenopodium album, Amaranthus spinosus, Setaria viridis, and Eleusine indica) in farmland and orchards. At the same irradiation distances, the energy required to cut the same type of large weed generally increases with increasing distances and stem diameters but decreases with increasing irradiation time. The variance of stems' power density after irradiation was larger and the values were more dispersed for Chenopodium album and Setaria viridis weeds, and the values were relatively scattered, while the power density values of Amaranthus spinosus and Eleusine indica weeds were more concentrated. When the irradiation time was 10 s, the 3.892 W/mm<superscript>2</superscript> laser was sufficient to eliminate weeds and plants with the irradiation distances of 2 m. The 2.47 W/mm<superscript>2</superscript> laser was more effective, as it killed weeds within a distance of 1 m in less than 1 s. This work demonstrates the feasibility of the laser weeding device and system that can completely cut off the stems of large weeds, and this technology has the potential to promote sustainable agriculture. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20734395
Volume :
14
Issue :
7
Database :
Complementary Index
Journal :
Agronomy
Publication Type :
Academic Journal
Accession number :
178698429
Full Text :
https://doi.org/10.3390/agronomy14071426