Journal
COMPUTERS AND ELECTRONICS IN AGRICULTURE
Volume 128, Issue -, Pages 58-66Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compag.2016.07.022
Keywords
UAV; Aerial spraying; GPS navigation; Spray uniformity
Funding
- National High Technology Research and Development Program [2013AA10230303]
- Special Fund for Agro-scientific Research in the Public Interest [201203025]
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To perform plant-protection operations, an unmanned aerial vehicle (UAV) based automatic control spraying system was designed in China. The system used a highly integrated and ultra-low power MSP430 single-chip micro-computer with an independent functional module. This allowed route planning software to direct the UAV to the desired spray area. The test results of route precision showed that in a 3-4 m/s crosswind, route deviations were around 0.2 m. The result of multiple-spraying swath uniformity tests showed a minimum coefficient of variation of 25% when flying at a height of 5 m with a spraying swath of 7 m and a wind speed of 0-2 m/s. When the spraying swath was 9 m or 5 m, the coefficients were 34% and 41%, respectively. Spray uniformity for these UAV tests were superior to the Standard Requirement for ultra-low volume spraying variation coefficient, 60%. (C) 2016 Elsevier B.V. All rights reserved.
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