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A Multi-nozzle Sprayer System for Targeted Control of Cutworm in Vineyards

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  2010 Pittsburgh, Pennsylvania, June 20 - June 23, 2010  1008686.(doi:10.13031/2013.29700)
Authors:   Feng Kang, Francis J Pierce, Douglas B Walsh, Qin Zhang, Shumao Wang
Keywords:   Targeted spray, Cutworm control, Laser range finder, Multi-nozzle, CAN bus

Barrier application for cutworm control in vineyards requires an efficient target recognition system and a rapid and precisely sprayer control system to ensure an adequate coverage on grape trunks. This research was to develop a trailer based targeted sprayer system. This automated targeted sprayer system consists of a scanning laser based trunk detection system and a multi-nozzle sprayer control system installed on a modified trailer sprayer. The target recognition system is operated by customized software installed on a laptop PC. The sprayer system consists of two arrays, one on each side, with three nozzles connected to solenoids wired to a CAN bus control system. Each nozzle can be controlled independently allowing for various up to 7 application rates. A trunk size compensation function was developed to improve the accuracy of the target recognition system. Tests were performed to evaluate the systems trunk detection accuracy in both a simulative vineyard and a real vineyard. Results indicated that the trunk size compensation function limited the root-mean-square error of the trunk radius detection to no more than 5.5 mm at travel speed up to 1.34 ms-1.

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