Performance of auto-boom control for agricultural sprayers

J.P. Molin; E.F. Reynaldo; F.P. Povh; J.V. Salvi

Performance of auto-boom control for agricultural sprayers

in Precision agriculture '09

Autor:innen:

J.P. Molin

J.P. Molin University of São Paulo, Rural Engineering Department, Av. Pádua Dias, 11 13418-900 Piracicaba, SP, Brazil; jpmolin@esalq.usp.br

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E.F. Reynaldo

E.F. Reynaldo University of São Paulo, Rural Engineering Department, Av. Pádua Dias, 11 13418-900 Piracicaba, SP, Brazil; jpmolin@esalq.usp.br

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F.P. Povh

F.P. Povh University of São Paulo, Rural Engineering Department, Av. Pádua Dias, 11 13418-900 Piracicaba, SP, Brazil; jpmolin@esalq.usp.br

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, und

J.V. Salvi

J.V. Salvi University of São Paulo, Rural Engineering Department, Av. Pádua Dias, 11 13418-900 Piracicaba, SP, Brazil; jpmolin@esalq.usp.br

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Art:: Kapitel

Seiten:: 767–775

DOI:: https://doi.org/10.1163/9789086866649_092

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Abstract

Auto-boom controllers have recently surged and are dedicated to sprayers to provide both guidance and to control sprayer sections or individual nozzles. The use of those devices is based on a field boundary and internal overlapping georeferenced by a GNSS receiver. If the GNSS receiver’s accuracy is limited, the equipment will not offer the amount of savings in chemicals and in environmental mitigation. Based on that a procedure was developed for measuring the impact of different GPS signals and the effect of forward speed and field boundary shapes. The field borders were saved on the auto-boom memory and as the vehicle crossed the border at each treatment and the time of turning on or off the boom sections was detected by a pressure sensor on the nozzle. An infrared sensor detected the exact moment of the boom crossing the border. The CV was high for the lower forward speed and firmware assisted GPS signal. It also tended to be higher on field entrance than on exits of the field. The control system does not perform the same when entering and when exiting the field, showing that on the exits the time intervals are higher for lower speeds. Results indicated taht especially the setting for stopping spraying, which is speed dependent, must be varied according to the travel speed. The distance errors from the target line reached the maximum of about 8 m on the 60° entrance and exit angle, independent of the GPS signal.

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Precision agriculture '09

ISBN:: 9789086866649

Verleger:: Wageningen Academic

Print-Publikationsdatum:: 01 Jan 2009

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- Biowissenschaften
  - Allgemein
  - Landwirtschaft und Umwelt

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Performance of auto-boom control for agricultural sprayers

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Precision agriculture '09

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