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A new spray deposition pattern measurement system based on spectral analysis of a fluorescent tracer

文献类型： 外文期刊

作者： Wen, Yao 1 ; Zhang, Ruirui 1 ; Chen, Liping 2 ; Huang, Yanbo 5 ; Yi, Tongchuan 2 ; Xu, Gang 2 ; Li, Longlong 2 ; Hewitt, 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Beijing Res Ctr Intelligent Equipment Agr, Beijing 100097, Peoples R China

2.Natl Res Ctr Intelligent Equipment Agr, Beijing 100097, Peoples R China

3.Natl Ctr Int Res Agr Aerial Applicat Technol, Beijing 100097, Peoples R China

4.Beijing Acad Agr & Forestry Sci, Beijing Key Lab Intelligent Equipment Technol Agr, Beijing 100097, Peoples R China

5.ARS, USDA, Crop Prod Syst Res Unit, POB 350, Stoneville, MS 38776 USA

6.Univ Queensland, Ctr Pesticide Applicat & Safety, Brisbane, Qld 4072, Australia

关键词： Aerial spraying; Deposition pattern measurement; Fluorescent tracer; Spectral analysis; Unmanned aerial vehicle

期刊名称：COMPUTERS AND ELECTRONICS IN AGRICULTURE （ 影响因子：5.565； 五年影响因子：5.494 ）

ISSN： 0168-1699

年卷期： 2019 年 160 卷

页码：

收录情况： SCI

摘要： To complement shortages of discrete sampling data and improve the detection accuracy of droplet deposition in unmanned aerial vehicle (UAV) spraying, we developed a new spray deposition pattern measurement system (SDPMS) based on a fluorescent tracer and spectral analysis. Then, we evaluated the system performance in two field spraying experiments in comparison with water-sensitive paper results. The system comprises a fluorescence scanner and spectral analysis program. The fluorescence scanner includes an ultraviolet light, spectrometer, far end controller, stepping motor, and sample reel. First, 1.0% fluorescent tracer solution is sprayed, and the droplets are collected on a paper strip. Then, the paper strip is scanned with the fluorescence scanner, and a set of fluorescence intensity values is collected and processed by the spectral analysis program. Finally, the spray deposition pattern is calculated. The experimental results showed that the spray deposition pattern from the SDPMS had a 0.89 correlation coefficient with that of water-sensitive paper. A linear regression model between fluorescence intensity and deposit coverage was constructed, with a coefficient of determination of 0.91 (F = 61.8845, P < 0.001). In addition, a linear regression model between fluorescence intensity and volume rate was constructed, with a coefficient of determination of 0.89 (F = 51.6639, P < 0.001). The SDPMS and field experiments offer a good foundation for the development of an improved system compatible with UAV spraying.

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