Improvement and Experiment for Online Measurement of Droplet Mass Deposit

IF 1.4 4区农林科学 Q3 AGRICULTURAL ENGINEERING

Transactions of the ASABE Pub Date : 2021-01-01 DOI:10.13031/trans.14219

Chengda Sun, Weimin Ding, Changding Liu, Weifeng Yao, Lilian Shi

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引用次数: 0

Abstract

HighlightsA measurement device for droplet mass deposit was improved to enhance its performance.A wireless data transmission system was used to achieve convenient data sharing.A user interface was designed for display and analysis of the measurement results.A positioning mechanism was designed for arranging measurement devices promptly.Abstract. Measurement of droplet mass deposit is important in spray research and spray performance evaluation. In this article, an online measurement device for droplet mass deposit was improved based on the original design. The measurement resolution, precision, and data stability were improved by optimization of the structure and components and by data filtering. The resolution reached 0.00067 mg cm-2. Comparison tests showed that the relative error between the original device and an analytical balance was 6.68% to 8.48%, and the relative error between the improved device and the analytical balance was 5.24% to 6.15%. Compared with the original device, the relative error decreased and the precision improved. The relative error between the improved device and a tracer method was 5.11% to 6.99%, and the precision of the improved device was close to that of the tracer method. A positioning mechanism was designed to arrange measurement devices promptly in the test area, and a wireless data transmission system was used to achieve convenient data sharing. A user interface was designed to display the results in the form of tables and contour maps. Tests were conducted to measure the droplet mass deposit distribution of one nozzle, the droplet mass deposit distribution in a tree canopy, and the uniformity of the droplet mass deposit distribution in a small horizontal area. The results showed that the improved measurement device could provide data promptly and conveniently for spray research and spray performance evaluation. Keywords: Device improvement, Mass distribution, Wireless communication.

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液滴质量沉积在线测量的改进与实验

对HighlightsA液滴质量沉积测量装置进行了改进，提高了其性能。采用无线数据传输系统实现便捷的数据共享。设计了用于显示和分析测量结果的用户界面。设计了一种定位机构，用于快速布置测量装置。液滴质量沉积的测量在喷雾研究和喷雾性能评价中具有重要意义。本文在原设计的基础上，对液滴质量沉积在线测量装置进行了改进。通过结构、元件的优化和数据滤波，提高了测量分辨率、精度和数据稳定性。分辨率达到0.00067 mg cm-2。对比试验表明，原装置与分析天平的相对误差为6.68% ~ 8.48%，改进后的装置与分析天平的相对误差为5.24% ~ 6.15%。与原装置相比，相对误差减小，精度提高。改进装置与示踪法的相对误差为5.11% ~ 6.99%，精度接近示踪法。设计了定位机构，在测试区域内及时布置测量设备;采用无线数据传输系统，实现数据的便捷共享。设计了一个用户界面，以表格和等高线地图的形式显示结果。试验测量了单个喷嘴内液滴质量沉积分布、树冠内液滴质量沉积分布以及小水平区域内液滴质量沉积分布的均匀性。结果表明，改进后的测量装置可为喷雾研究和喷雾性能评价提供及时、方便的数据。关键词:设备改进，批量分布，无线通信。

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来源期刊

Transactions of the ASABE AGRICULTURAL ENGINEERING-

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： This peer-reviewed journal publishes research that advances the engineering of agricultural, food, and biological systems. Submissions must include original data, analysis or design, or synthesis of existing information; research information for the improvement of education, design, construction, or manufacturing practice; or significant and convincing evidence that confirms and strengthens the findings of others or that revises ideas or challenges accepted theory.