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Title:Programmable ultrasonic sensing system for targeted spraying in orchards
Authors:Stajnko, Denis (Author)
Berk, Peter (Author)
Lešnik, Mario (Author)
Jejčič, Viktor (Author)
Lakota, Miran (Author)
Štrancar, Andrej (Author)
Hočevar, Marko (Author)
Rakun, Jurij (Author)
Files:.pdf Sensors_2012_Stajnko_et_al._Programmable_Ultrasonic_Sensing_System_for_Targeted_Spraying_in_Orchards.pdf (890,30 KB)
 
URL http://www.mdpi.com/1424-8220/12/11/15500/
 
Language:English
Work type:Scientific work (r2)
Typology:1.01 - Original Scientific Article
Organization:FKBV - Faculty of Agriculture and Life Sciences
Abstract:This research demonstrates the basic elements of a prototype automated orchard sprayer which delivers pesticide spray selectively with respect to the characteristics of the targets. The density of an apple tree canopy was detected by PROWAVE 400EP250 ultrasound sensors controlled by a Cypress PSOC CY8C29466 microcontroller. The ultrasound signal was processed with an embedded computer built around a LPC1343 microcontroller and fed in real time to electro-magnetic valves which open/close spraying nozzles in relation to the canopy structure. The analysis focuses on the detection of appropriate thresholds on 15 cm ultrasound bands, which correspond to maximal response to tree density, and this was selected for accurate spraying guidance. Evaluationof the system was performed in an apple orchard by detecting deposits of tartrazine dye (TD) on apple leaves. The employment of programmable microcontrollers and electro-magnetic valves decreased the amountof spray delivered by up to 48.15%. In contrast, the reduction of TD wasonly up to 37.7% at some positions within the tree crown and 65.1% in the gaps between trees. For all these reasons, this concept of precise orchard spraying can contribute to a reduction of costs and environmental pollution, while obtaining similar or even better leaf deposits.
Keywords:air-assisted sprayer, ultrasound, algorithm, programmable, microcontroller, spray distribution, orchard
Year of publishing:2012
Number of pages:str. 15500-15519
Numbering:št. 11, Letn. 12
ISSN:1424-8220
UDC:636.348:004.9:634.1
ISSN on article:1424-8220
COBISS_ID:3424812 Link is opened in a new window
DOI:10.3390/s121115500 Link is opened in a new window
License:CC BY 4.0
This work is available under this license: Creative Commons Attribution 4.0 International
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Downloads:21
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Record is a part of a journal

Title:Sensors
Publisher:MDPI
ISSN:1424-8220
COBISS.SI-ID:10176278 New window

Secondary language

Language:Slovenian
Keywords:pršilnik z zračnim tokom, ultrazvok, algoritem, mikrokrmilnik, distribucija pršila, sadovnjak


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