Influence of UAV flight speed on droplet deposition characteristics with the application of infrared thermal imaging

Lv, Meiqiao; Xiao, Shupei; Tao, Yu; He, Yong

doi:10.25165/j.ijabe.20191203.4868

Cited by 26 publications

(16 citation statements)

References 20 publications

(21 reference statements)

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“…p−values are all less than 0.05). Overall speaking, the increase of flight velocity will significantly decrease the droplet coverage rate, which actually meets our expectation and is also consistent with previous results [13,14]. (2) for inter-row route, "spraying once" has a higher droplet coverage value over "spraying twice" at all tested positions.…”

Section: Effects Of Flight Velocitysupporting

confidence: 93%

“…It is noted that most of the existing results are on cereal crops rather than orchard trees. For example, the effects of flight height and flight velocity on droplet deposition distribution were investigated in wheat [11], cotton [12] and indoor environment [13], respectively. It was shown in both crops [11] [12] that increase of flight height within a certain range (i.e.…”

Section: Introductionmentioning

confidence: 99%

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Experimental evaluation of UAV spraying for peach trees of different shapes: Effects of operational parameters on droplet distribution

Meng¹,

Song

et al. 2020

Computers and Electronics in Agriculture

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Small-scale plant protection Unmanned Aerial Vehicles (UAVs) are finding a wide range of applications in modern agriculture management (including aerial spraying) due to their high efficiency and flexibility, low labour/water requirement and no damage to crops and soils, which substantially increase agricultural productivity and sustainability.UAV operational parameters, however, have remarkable effects on droplet distribution in UAV spraying, which significantly affect pesticide utilization rate and treatment effectiveness. Therefore, this work aimed to evaluate the effects of UAV operational parameters on droplet distribution for orchard trees. In particular, peach, an important orchard tree worldwide, is investigated in this study, and two typical tree shapes were considered including Y-shape and Central Leader (CL)-shape. Specifically, UAV spraying experiments were performed in Shandong Institute of Pomology, Shandong Province, China, and gas powered helicopter 3WQF120-12 was chosen as the spraying platform. The UAV operational parameters under consideration include flight route (intra-row, inter-row), flight velocity (four levels: 2, 3, 4, 5 m/s), number of spray times (1 vs 2) and nozzle flow rate. Droplet coverage rate at different positions and layers, obtained by water sensitive papers, was chosen as the metric to evaluate spraying performance. Experimental results show that: (1) the spraying uniformity is different between Y-shape and CL-shape peach tree, where Y-shape exhibits uniformity for positions at inner or outer layers. CL-shape results in a higher droplet coverage at top layer while with uniformity at lower three layers; (2) for Y-shape peach, intra-row route obtained a higher droplet coverage rate; while for CL-shape peach inter-row not only saved spraying volume but also results in a higher droplet coverage rate; (3) for both tree shapes, the increase in flight velocity (2-5 m/s) significantly decreased the droplet coverage rate; (4) * Jianli Song and Yubin Lan are corresponding authors; Yanhua Meng and Jinya Su are joint first authors contributing equally to this work.

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Section: Effects Of Flight Velocitysupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Experimental evaluation of UAV spraying for peach trees of different shapes: Effects of operational parameters on droplet distribution

Meng¹,

Song

et al. 2020

Computers and Electronics in Agriculture

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“…This ensures even coverage with limited wastage. Lv et al [16] demonstrated the practicability of infrared thermal imaging in evaluating the droplet deposition in the field of aerial spraying. In the study, the effect of UAV flight speed on the spray droplets was investigated and the variable spray test was conducted by a UAV simulation platform, with airborne spray system under controllable environment.…”

Section: Crop and Spot Sprayingmentioning

confidence: 99%

Sky-Farmers: Applications of Unmanned Aerial Vehicles (UAV) in Agriculture

Yinka-Banjo¹,

Ajayi²

2020

Autonomous Vehicles

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Unmanned aerial vehicles (UAVs) are unpiloted flying robots. The term UAVs broadly encompasses drones, micro-, and nanoair/aerial vehicles. UAVs are largely made up of a main control unit, mounted with one or more fans or propulsion system to lift and push them through the air. Though initially developed and used by the military, UAVs are now used in surveillance, disaster management, firefighting, border-patrol, and courier services. In this chapter, applications of UAVs in agriculture are of particular interest with major focus on their uses in livestock and crop farming. This chapter discusses the different types of UAVs, their application in pest control, crop irrigation, health monitoring, animal mustering, geo-fencing, and other agriculture-related activities. Beyond applications, the advantages and potential benefits of UAVs in agriculture are also presented alongside discussions on business-related challenges and other open challenges that hinder the wide-spread adaptation of UAVs in agriculture.

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“…Lv has analyzed the influence of flight speed on droplet deposition. The analysis concluded that deposition density and coverage, mean droplet size decreases with increasing speed [26]. A. S. Mat Su in his study suggests that height of 1.5 to 2.0 m from the crop is suitable for spraying over rice crop.…”

mentioning

confidence: 91%

Design and Development of Agricultural Spraying Drone: Spraying System and Tank

Kadu¹

2020

IJMTST

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Designing the drone for spraying has become one of the essential concerns in recent developments in technology in order to avoid human involvement in the spraying phenomenon. While designing the spraying drone it is important to design the components according to according to specifications. In this paper a tank carrying a spraying liquid of 3 lt. for spraying herbicide over rice crop. This paper deals with the selection of spraying liquid and spraying system required for the spraying operation. The spraying system includes the pump, nozzle and carrying media(pipes). The spraying tank is analyzed for drag and lift at different angles of the front face is titled at different angles between 0 to 60° with the vertical. The optimum tank configuration has been selected for the design. The paper also includes selection of herbicide, pump and nozzles for the drone spraying assembly.

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Influence of UAV flight speed on droplet deposition characteristics with the application of infrared thermal imaging

Cited by 26 publications

References 20 publications

Experimental evaluation of UAV spraying for peach trees of different shapes: Effects of operational parameters on droplet distribution

Experimental evaluation of UAV spraying for peach trees of different shapes: Effects of operational parameters on droplet distribution

Sky-Farmers: Applications of Unmanned Aerial Vehicles (UAV) in Agriculture

Design and Development of Agricultural Spraying Drone: Spraying System and Tank

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