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Position: Home > Articles > Development of sensor system for real-time measurement of droplet deposition of agricultural sprayers International Journal of Agricultural and Biological Engineering 2021,14 (5)

Development of sensor system for real-time measurement of droplet deposition of agricultural sprayers

作者：

Longlong Li;Ruirui Zhang;Liping Chen;Tongchuan Yi;Gang Xu;Daxuan Xue;Qing Tang;Andrew Hewitt;Yining A

单位：

Faculty of Science and Engineering, The University of Nottingham Ningbo China, Ningbo, 315100, Chin;College of Information Engineering,Capital Normal University,Beijing 100048,China;#R##N#3. National Center for International Research on Agricultural Aerial Application Technology, Beijing 100097, China;2. National Research Center of Intelligent Equipment for Agriculture, Beijing 100097, China;Centre for Pesticide Application and Safety, The University of Queensland, Queensland 4072, Australia

关键词：

deposition;droplet deposition;the system;developed;agricultural;r

摘要：

During the chemical application process, droplet deposition on a target is an important reference indicator for evaluating the spraying technique and its performance. In order to quickly obtain deposition results in the field, this study proposed a novel system based on surface humidity sensors. The basic principle is to convert the measured physical quantity change into a capacitance change, thereby realizing the physical quantity to electrical signal conversion. An Android application for mobile terminal and corresponding coordinator were developed, which allowed operators to control multiple sensors simultaneously through the Bluetooth. The soluble tracer detected by spectrophotometer was used to calibrate the system. The obtained results indicated a good correlation between deposition volume and voltage increment output from the newly system (R-2 of the six nozzles with D-v0.5 ranging from 107.28 mu m to 396.20 mu m were 0.8674-0.9729), and a power regression model based on the least squares technique (R-2 =0.8022) was developed. In the field test, the system exhibited an optimal performance in predicting the deposition volume. Compared with the conventional method of measuring tracer concentration, the deviation was less than 10%. In addition, the system exhibited good fitting curve of the deposition distribution with droplet number results measured by the water sensitive paper method.

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Development of sensor system for real-time measurement of droplet deposition of agricultural sprayers

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