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無人機變量施藥實時監(jiān)控系統(tǒng)設(shè)計與試驗
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國家重點研發(fā)計劃項目(2018YFD0600202-04)、江蘇省研究生科研與實踐創(chuàng)新計劃項目(KYCX18-0969)和江蘇省農(nóng)業(yè)科技自主創(chuàng)新資金項目(CX(19)3077)


Design and Test of Real-time Monitoring System for UAV Variable Spray
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    摘要:

    在航空施藥過程中,,為保證單位面積施藥量的一致性,、實現(xiàn)施藥流量的實時控制,提出一種航空變量施藥分級控制算法,。該算法根據(jù)各參數(shù)的等級和閥門開度建立分級控制表,,再結(jié)合分級控制公式計算作業(yè)參數(shù)變化時閥門對應(yīng)的開度,從而計算出施藥流量,,實現(xiàn)施藥流量的自動調(diào)節(jié),?;谠撍惴ㄔO(shè)計了基于單片機多信息融合的航空變量施藥實時監(jiān)控系統(tǒng),,通過軟硬件設(shè)計實現(xiàn)了對作業(yè)航跡、作業(yè)高度,、作業(yè)速度,、施藥流量及藥液余量等信息的實時監(jiān)測,進行了航跡監(jiān)測試驗,、施藥流量監(jiān)測試驗,、液位監(jiān)測試驗和變量施藥控制試驗等。結(jié)果表明,,該系統(tǒng)可以準(zhǔn)確監(jiān)測多種作業(yè)參數(shù),,并可根據(jù)參數(shù)變化精準(zhǔn)調(diào)控施藥流量;飛行航跡監(jiān)測平均偏差為0.98m,,施藥流量監(jiān)測平均誤差為3.57%,,液位監(jiān)測平均誤差為1.97%,系統(tǒng)對流量控制的最大誤差為9.26%,。

    Abstract:

    The dosage sprayed upon per unit area is an important indicator to measure the performance of spray. In order to ensure the consistency of the dosage sprayed upon per unit area, and realize the real-time control of the spray volume, based on the analysis of aerial variable spray technology, a set of hierarchical control algorithm of aerial variable spray for UAV was proposed. A hierarchical control table was created based on the level of each spray parameter and the opening degree of the valve. And then a corresponding opening degree value of the valve was obtained when spray parameters changed by combining hierarchical control formula. And it can calculate the spray volume to realize the purpose of automatically adjusting the spray volume. A set of real-time monitoring system of aerial variable spray for UAV was developed in view of the algorithm and multi-information fusion technology based on single chip microcomputer. And the system realized the real-time monitoring of information such as flight track, flight height, flight speed, spray volume and liquid residue through the design of software and hardware. And experimental studies of flight track monitoring, spray volume monitoring, liquid level monitoring and variable spray control were carried out. The test results showed that the system can accurately monitor a variety of spray parameters in real time and precisely regulate the spray flow according to the parameter changes. And the mean deviation of flight track monitoring was 0.98m. The mean deviation of spray volume monitoring was 3.57%. The average deviation of liquid level monitoring was 1.97%. The maximum error of spray volume control was 9.26%.

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劉洋洋,茹煜,陳青,陳旭陽,劉彬.無人機變量施藥實時監(jiān)控系統(tǒng)設(shè)計與試驗[J].農(nóng)業(yè)機械學(xué)報,2020,51(7):91-99. LIU Yangyang, RU Yu, CHEN Qing, CHEN Xuyang, LIU Bin. Design and Test of Real-time Monitoring System for UAV Variable Spray[J]. Transactions of the Chinese Society for Agricultural Machinery,2020,51(7):91-99.

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  • 收稿日期:2020-03-02
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  • 在線發(fā)布日期: 2020-07-10
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