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Preliminary evaluation of a blast sprayer controlled by pulse width modulated nozzles

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Preliminary evaluation of a blast sprayer controlled by pulse width modulated nozzles

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dc.contributor.author Ortí García, Enrique es_ES
dc.contributor.author Cuenca, Andrés es_ES
dc.contributor.author Pérez Teruel, Montano es_ES
dc.contributor.author Torregrosa, A. es_ES
dc.contributor.author Ortiz Sánchez, María Coral es_ES
dc.contributor.author Rovira Más, Francisco es_ES
dc.date.accessioned 2023-06-01T18:01:23Z
dc.date.available 2023-06-01T18:01:23Z
dc.date.issued 2022-07 es_ES
dc.identifier.uri http://hdl.handle.net/10251/193805
dc.description.abstract [EN] Precision spraying relies on the response of the spraying equipment to the features of the targeted canopy. PWM technology manages the flow rate using a set of electronically actuated solenoid valves to regulate flow rate at the nozzle level. Previous studies have found that PWM systems may deliver incorrect flow rates. The objective of the present study was to characterize the performance of a commercial blast sprayer modified with pulse-width-modulated nozzles under laboratory conditions, as a preliminary step before its further field validation. Four different duty cycles (25 percent, 50 percent, 75 percent and 100 percent) and four different pressures (400 kPa, 500 kPa, 600 kPa and 700 kPa) were combined to experimentally measure the flow rate of each nozzle. Results showed that the PWM nozzles mounted in the commercial blast sprayer, under static conditions, were capable of modulating flow rate according to the duty cycle. However, the reduction of flow rates for the tested duty cycles according to pressure was lower than the percentage expected. A good linear relation was found between the pressure registered by the control system feedback sensor and the pressure measured by a reference conventional manometer located after the pump. High-speed video recordings confirmed the accurate opening and closing of the nozzles according to the duty cycle; however, substantial pressure variations were found at nozzle level. Further research to establish the general suitability of PWM systems for regulating nozzle flow rates in blast sprayers without modifying the system pressure still remains to be addressed. es_ES
dc.description.sponsorship This research was funded by the Government of Spain through the project "Smart spraying for a sustainable vineyard and olive trees" PIVOS (PID2019-104289RB). es_ES
dc.language Inglés es_ES
dc.publisher MDPI AG es_ES
dc.relation.ispartof Sensors es_ES
dc.rights Reconocimiento (by) es_ES
dc.subject Precision spraying es_ES
dc.subject Blast sprayer es_ES
dc.subject PWM nozzles es_ES
dc.subject.classification INGENIERIA AGROFORESTAL es_ES
dc.title Preliminary evaluation of a blast sprayer controlled by pulse width modulated nozzles es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.3390/s22134924 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-104289RB-C44/ES/PULVERIZACION INTELIGENTE EN CULTIVOS MEDITERRANEOS PARA UNA AGRICULTURA SOSTENIBLE: AUTOMATIZACION/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería Agronómica y del Medio Natural - Escola Tècnica Superior d'Enginyeria Agronòmica i del Medi Natural es_ES
dc.description.bibliographicCitation Ortí García, E.; Cuenca, A.; Pérez Teruel, M.; Torregrosa, A.; Ortiz Sánchez, MC.; Rovira Más, F. (2022). Preliminary evaluation of a blast sprayer controlled by pulse width modulated nozzles. Sensors. 22(13):1-12. https://doi.org/10.3390/s22134924 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.3390/s22134924 es_ES
dc.description.upvformatpinicio 1 es_ES
dc.description.upvformatpfin 12 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 22 es_ES
dc.description.issue 13 es_ES
dc.identifier.eissn 1424-8220 es_ES
dc.identifier.pmid 35808413 es_ES
dc.identifier.pmcid PMC9269797 es_ES
dc.relation.pasarela S\469547 es_ES
dc.contributor.funder AGENCIA ESTATAL DE INVESTIGACION es_ES
dc.contributor.funder Universitat Politècnica de València
dc.subject.ods 03.- Garantizar una vida saludable y promover el bienestar para todos y todas en todas las edades es_ES
dc.subject.ods 08.- Fomentar el crecimiento económico sostenido, inclusivo y sostenible, el empleo pleno y productivo, y el trabajo decente para todos es_ES
upv.costeAPC 2752 es_ES


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