Filters








51 Hits in 7.0 sec

Ultrasonic and LIDAR Sensors for Electronic Canopy Characterization in Vineyards: Advances to Improve Pesticide Application Methods

Jordi Llorens, Emilio Gil, Jordi Llop, Alexandre Escolà
2011 Sensors  
Canopy characterization is a key factor to improve pesticide application methods in tree crops and vineyards.  ...  In [16, 17] the authors discussed the use of the ultrasonic sensors to measure canopy volume in peach and apple trees and used this information to improve the pesticide application process.  ...  We are grateful to Xavier Vidal director of the School of Viticulture "Mercè Rosell" in Espiells (Barcelona) and Marcel Lleonart and Elena Martinez from the Castell del Remei farm (Lleida) for his help  ... 
doi:10.3390/s110202177 pmid:22319405 pmcid:PMC3274039 fatcat:c64thdfqxbgy3arioaoondv52u

Leaf area index estimation in vineyards using a ground-based LiDAR scanner

Jaume Arnó, Alexandre Escolà, Josep M. Vallès, Jordi Llorens, Ricardo Sanz, Joan Masip, Jordi Palacín, Joan R. Rosell-Polo
2012 Precision Agriculture  
Estimation of grapevine vigour using mobile proximal sensors can provide an 31 indirect method for determining grape yield and quality.  ...  To assess the feasibility of using light detection and ranging 34 (LiDAR) sensors for predicting the LAI, several field trials were performed using a 35 tractor-mounted LiDAR system.  ...  Ultrasonic and LIDAR sensors for 570 electronic canopy characterization in vineyards: advances to improve pesticide 571 application methods.  ... 
doi:10.1007/s11119-012-9295-0 fatcat:skolsjro4vgh3ejw3mghk4utqm

On-Ground Vineyard Reconstruction Using a LiDAR-Based Automated System

Hugo Moreno, Constantino Valero, José María Bengochea-Guevara, Ángela Ribeiro, Miguel Garrido-Izard, Dionisio Andújar
2020 Sensors  
Its accuracy and performance were assessed for vineyard crop characterization using distance measurements, aiming to obtain a 3D reconstruction.  ...  In recent years, light detection and ranging (LiDAR) sensors have been widely used for gathering information about plant architecture to extract biophysical parameters for decision-making programs.  ...  Funding: This research was funded by the RYC-2016-20355 agreement and by the Spanish Agencia Estatal de Investigación (AEI) and Fondo Europeo de Desarrollo Regional (FEDER) (AGL2017-83325-C4-3-R).  ... 
doi:10.3390/s20041102 pmid:32085436 pmcid:PMC7070798 fatcat:xxyk6lg54raxlp7whfz2past5a

Advanced Technologies for the Improvement of Spray Application Techniques in Spanish Viticulture: An Overview

Emilio Gil, Jaume Arnó, Jordi Llorens, Ricardo Sanz, Jordi Llop, Joan Rosell-Polo, Montserrat Gallart, Alexandre Escolà
2014 Sensors  
This paper presents part of the research work carried out in Spain in the field of sensors for characterizing vineyard canopies and monitoring spray drift in order to improve vineyard spraying and make  ...  All these technologies are interesting in terms of adjusting the amount of pesticides applied to the target canopy.  ...  Acknowledgments This work was funded by the Spanish Ministry of Science and Innovation (SAFESPRAY project AGL2010-22304-C04-03 and AGL2010-22304-C04-04, and OPTIDOSA project AGL2007-66093-C04-02 and AGL2007  ... 
doi:10.3390/s140100691 pmid:24451462 pmcid:PMC3926582 fatcat:ncczhcto25cm3ipqm55otwrcqu

Advanced Technologies for the Improvement of Spray Application Techniques in Spanish Viticulture: An Overview [chapter]

Emilio Gil, Jaume Arnó, Jordi Llorens, Ricardo Sanz, Jordi Llop, Joan Rosell-Polo, Montserrat Gallart, Alexandre Escolà
2015 Environmentally Sustainable Viticulture  
This paper presents part of the research work carried out in Spain in the field of sensors for characterizing vineyard canopies and monitoring spray drift in order to improve vineyard spraying and make  ...  All these technologies are interesting in terms of adjusting the amount of pesticides applied to the target canopy.  ...  Acknowledgments This work was funded by the Spanish Ministry of Science and Innovation (SAFESPRAY project AGL2010-22304-C04-03 and AGL2010-22304-C04-04, and OPTIDOSA project AGL2007-66093-C04-02 and AGL2007  ... 
doi:10.1201/b18226-10 fatcat:vjwz6ux23vfxlfixtz63fsc3oy

Review of Variable-Rate Sprayer Applications Based on Real- Time Sensor Technologies [chapter]

Zhihong Zhang, Xiaoyang Wang, Qinghui Lai, Zhaoguo Zhang
2018 Automation in Agriculture - Securing Food Supplies for Future Generations  
Systems based on infrared, ultrasonic, light detection and ranging (LIDAR), and stereo vision sensors were discussed, respectively, on their performances to detect spray targets.  ...  Variable rate spraying of the canopy allows growers to apply adjusted volume rate of pesticides to the target, based on canopy size, and to apply plant protection products in an economical and environmentally  ...  Palleja and Landers [26] proposed a real-time method, based on an array of ultrasonic sensors, to estimate canopy density in apple orchards and vineyards ( Figure 8 ).  ... 
doi:10.5772/intechopen.73622 fatcat:f2e4g6wnxrcgrmvbkmpop4bt3e

Assessment of Vineyard Canopy Characteristics from Vigour Maps Obtained Using UAV and Satellite Imagery

Javier Campos, Francisco García-Ruíz, Emilio Gil
2021 Sensors  
Canopy characterisation is a key factor for the success and efficiency of the pesticide application process in vineyards.  ...  This relationship was improved and extended to canopy height, width, leaf wall area, and TRV when the data were clustered.  ...  Acknowledgments: The authors would like to thank to Miguel Torres, Jean Leon and Andreu Pinyol for their support in the field trials.  ... 
doi:10.3390/s21072363 pmid:33805351 fatcat:svfw6dzi7zha3lklfxiithhor4

Testing the Suitability of a Terrestrial 2D LiDAR Scanner for Canopy Characterization of Greenhouse Tomato Crops

Jordi Llop, Emilio Gil, Jordi Llorens, Antonio Miranda-Fuentes, Montserrat Gallart
2016 Sensors  
Among the electronic 88 characterization methods, the more frequent are the ultrasonic sensors [18-20], the stereo vision [22], 89 the light sensors [23] and the LiDAR scanners [24-29].  ...  The canopy characterization methods can be classified in two general categories: manual and 79 electronic methods.  ...  Acknowledgments: This work was funded by the Spanish Ministry of Economy and  ... 
doi:10.3390/s16091435 pmid:27608025 pmcid:PMC5038713 fatcat:6perraizyzh7plpdrwy3zaww5u

Opportunities and Possibilities of Developing an Advanced Precision Spraying System for Tree Fruits

Md Sultan Mahmud, Azlan Zahid, Long He, Phillip Martin
2021 Sensors  
In addition, air jet velocity, travel speed, wind speed and direction, droplet size, and canopy characteristics need to be considered for successful droplet deposition by the spraying system.  ...  Reducing risk from pesticide applications has been gaining serious attention in the last few decades due to the significant damage to human health, environment, and ecosystems.  ...  Acknowledgments: Authors would like to thank Heping Zhu (Agricultural Engineer, USDA-ARS) for providing his valuable suggestions and guidance to improve this article.  ... 
doi:10.3390/s21093262 pmid:34066785 fatcat:vrz63pghpraenb632n5fvmgxpe

A review of methods and applications of the geometric characterization of tree crops in agricultural activities

J.R. Rosell, R. Sanz
2012 Computers and Electronics in Agriculture  
In the field of pesticide application, knowledge of 2 necessary to resolve several technological and commercial questions.  ...  9 This paper presents the foundations and applications in agriculture of the main systems 10 used for the geometrical characterization of tree plantations, including systems based on 11 ultrasound, digital  ...  In this section we refer to various studies being conducted with ultrasonic sensors and 527 LIDAR sensors, as they seem to be the most promising with respect to target-sensing 528 pesticide application  ... 
doi:10.1016/j.compag.2011.09.007 fatcat:yokz4nulcfeu7gla3dmav4or6m

Digital evaluation of the leaf wall area of the grapevine (Vitis vinifera cv. Sauvignon) by using LIDAR measuring technology

Peter Berk, Matej Sečnik, Andreja Urbanek Krajnc, Denis Stajnko
2021 Glasnik zaštite bilja  
To determine the exact DGPS position of the LIDAR sensor during the measurement, we set up a DGPS base station.  ...  The digital system for measuring the leaf wall area on different segments consisted of a LIDAR sensor and a Differential Global Positioning System (hereinafter DGPS).  ...  Authors acknowledge the Chamber of Agriculture and Forestry of Slovenia -Agricultural and Forestry Institute Maribor (Simona Hauptman, Roman Štabuc) for technical support in carrying out experiments.  ... 
doi:10.31727/gzb.44.4.10 fatcat:e3hipq73xfbhbipcymu2ii4pmi

Advancements of Spraying Technology in Agriculture [chapter]

Fiaz Ahmad, Aftab Khaliq, Baijing Qiu, Muhammad Sultan, Jing Ma
2021 Technology in Agriculture [Working Title]  
For pesticide application, it is not the only sprayer that is essential, but all the parameters like the type and area of the plant canopy, area of a plant leaf, height of the crop, and volume of plants  ...  related to plant protection product applications are very important for obtaining better results.  ...  Sensors are (Ultrasonic sensor, Infrared sensor, LiDAR sensor) used in variable sprayers for the feature detection of the target area.  ... 
doi:10.5772/intechopen.98500 fatcat:6dlol6ab5ja6vernmruhnp4p6a

A LiDAR-Based System to Assess Poplar Biomass

D. Andújar, A. Escolà, J. R. Rosell-Polo, R. Sanz, V. Rueda-Ayala, C. Fernández-Quintanilla, A. Ribeiro, J. Dorado
2016 Gesunde Pflanzen  
Llorens J, Gil E, Llop J, Escola A (2011) Ultrasonic and LiDAR sensors for electronic canopy characterization in vineyards: Advances to improve pesticide application methods.  ...  Potential of a terrestrial LiDAR-based system to characterize weed vegetation in maize crops. Comput Electron Agr 92: 11-15.  ...  This is a pre-print version of the article A LiDAR-Based System to Assess Poplar Biomass Acknowledgements This research was funded by the CICyT (Commision Interministerial de Ciencia y Tecnología, Spain  ... 
doi:10.1007/s10343-016-0369-1 fatcat:c57zyqdzlbdknbcofrjqi5q5xa

Assessment of the Accuracy of a Multi-Beam LED Scanner Sensor for Measuring Olive Canopies

Rafael Sola-Guirado, Sergio Bayano-Tejero, Antonio Rodríguez-Lizana, Jesús Gil-Ribes, Antonio Miranda-Fuentes
2018 Sensors  
The sensor was tested in both laboratory and field conditions to check its accuracy, its cone width, and its ability to characterize olive canopies in situ.  ...  Many sensors and techniques have reported satisfactory results in these approaches and in this work a 2D laser scanner was explored for measuring canopy trees in real-time conditions.  ...  Acknowledgments: We are very thankful for the help of the Spanish Olive Oil Interprofessionals (OIAOE) and the Spanish Table Olive Interprofessional (Interaceituna).  ... 
doi:10.3390/s18124406 fatcat:bhcp3ka6czcjffwh7zyjceesay

Variable rate dosing in precision viticulture: Use of electronic devices to improve application efficiency

J. Llorens, E. Gil, J. Llop, A. Escolà
2010 Crop Protection  
A conventional spray application with a constant volume rate per 9 unit ground area (l·ha -1 ) was compared with a variable rate application method designed 10 to compensate electronically for measured  ...  An air-blast 11 sprayer with individual multi-nozzle spouts was fitted with three ultrasonic sensors and 12 three electro-valves on one side, in order to modify the emitted flow rate of the nozzles 13  ...  A mast was fitted on its left side to hold three 123 ultrasonic sensors and a solenoid high frequency electro valve was in front of each of 124 the three spouts linked to each ultrasonic sensor.  ... 
doi:10.1016/j.cropro.2009.12.022 fatcat:tenhv4evhjhr7fq3vxu2qise7e
« Previous Showing results 1 — 15 out of 51 results