基于駐波率原理的農藥霧滴沉積量檢測系統(tǒng)設計與試驗
發(fā)布時間：2019-01-29 03:34
【摘要】：為實現(xiàn)施藥后霧滴地面沉積量的快速獲取,該文提出一種基于駐波率原理的叉指型霧滴采集極板結構。為驗證該極板結構的合理性,應用三維電磁仿真軟件HFSS對此系統(tǒng)進行電磁仿真。HFSS模型求解的結果表明,叉指型極板內部出現(xiàn)了靜電屏蔽,極板間通過霧滴能夠實現(xiàn)電磁耦合,可用于霧滴沉積量檢測,系統(tǒng)靈敏程度將隨著極板間距的增大而減小。通過標定試驗,建立了檢測系統(tǒng)輸出電壓與試劑溶液沉積量關系的回歸方程,測試后2種不同介電常數的胭脂紅溶液和丙三醇溶液決定系數R2分別為0.982 1和0.997 6。通過對3W-ZW10型溫室自走式噴霧機應用測試,結果表明:該系統(tǒng)在采樣點上沉積量的模擬值最大相對誤差率不超過7.95%,且模擬值與實測值均方根誤差RMSE最大為0.076 7 mg/cm~2,霧滴沉積檢測準確率高,方便實用,可用于田間霧滴沉積率的快速測量。
[Abstract]:In order to obtain the surface deposition of fog droplets quickly after application, a cross-finger polar plate structure based on the principle of standing wave rate is proposed in this paper. In order to verify the rationality of the electrode plate structure, the electromagnetic simulation software HFSS is used to simulate the system. The results of HFSS model solution show that there is a hydrostatic shielding inside the cross finger plate, and the electromagnetic coupling between the plates can be realized by droplets. It can be used to detect droplet deposition, and the sensitivity of the system will decrease with the increase of plate spacing. The regression equation of the relationship between the output voltage of the detection system and the deposition amount of the reagent solution was established through the calibration test. After the determination of the two different dielectric constants, the determination coefficients of the carmine solution and the glycerol solution were 0.982 1 and 0.997 6, respectively. Through the application test of 3W-ZW10 type greenhouse self-propelled sprayer, the results show that the maximum relative error rate of the simulation value of the sediment quantity on the sampling point is not more than 7.95%. Moreover, the maximum root mean square error (RMSE) of simulated and measured values is 0.076 mg/cm~2, which is convenient and practical, and can be used for rapid measurement of droplet deposition rate in the field.
【作者單位】： 中國農業(yè)大學工學院;中國農業(yè)大學信息與電氣工程學院;華北電力大學機械工程系;
【基金】：科技部國家重點研發(fā)計劃項目“地面與航空高工效施藥技術及智能化裝備”(2016YFD0200700);科技部國家重點研發(fā)計劃項目“現(xiàn)代果園智能化精細生產管理技術裝備研發(fā)”(2017YFD0701400)
【分類號】：S491;TP274
，
本文編號：2417599
[Abstract]:In order to obtain the surface deposition of fog droplets quickly after application, a cross-finger polar plate structure based on the principle of standing wave rate is proposed in this paper. In order to verify the rationality of the electrode plate structure, the electromagnetic simulation software HFSS is used to simulate the system. The results of HFSS model solution show that there is a hydrostatic shielding inside the cross finger plate, and the electromagnetic coupling between the plates can be realized by droplets. It can be used to detect droplet deposition, and the sensitivity of the system will decrease with the increase of plate spacing. The regression equation of the relationship between the output voltage of the detection system and the deposition amount of the reagent solution was established through the calibration test. After the determination of the two different dielectric constants, the determination coefficients of the carmine solution and the glycerol solution were 0.982 1 and 0.997 6, respectively. Through the application test of 3W-ZW10 type greenhouse self-propelled sprayer, the results show that the maximum relative error rate of the simulation value of the sediment quantity on the sampling point is not more than 7.95%. Moreover, the maximum root mean square error (RMSE) of simulated and measured values is 0.076 mg/cm~2, which is convenient and practical, and can be used for rapid measurement of droplet deposition rate in the field.
【作者單位】： 中國農業(yè)大學工學院;中國農業(yè)大學信息與電氣工程學院;華北電力大學機械工程系;
【基金】：科技部國家重點研發(fā)計劃項目“地面與航空高工效施藥技術及智能化裝備”(2016YFD0200700);科技部國家重點研發(fā)計劃項目“現(xiàn)代果園智能化精細生產管理技術裝備研發(fā)”(2017YFD0701400)
【分類號】：S491;TP274
，
本文編號：2417599
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