【摘要】：為實(shí)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(jié)構(gòu)。為驗(yàn)證該極板結(jié)構(gòu)的合理性,應(yīng)用三維電磁仿真軟件HFSS對(duì)此系統(tǒng)進(jìn)行電磁仿真。HFSS模型求解的結(jié)果表明,叉指型極板內(nèi)部出現(xiàn)了靜電屏蔽,極板間通過霧滴能夠?qū)崿F(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(biāo)定試驗(yàn),建立了檢測系統(tǒng)輸出電壓與試劑溶液沉積量關(guān)系的回歸方程,測試后2種不同介電常數(shù)的胭脂紅溶液和丙三醇溶液決定系數(shù)R2分別為0.982 1和0.997 6。通過對(duì)3W-ZW10型溫室自走式噴霧機(jī)應(yīng)用測試,結(jié)果表明:該系統(tǒng)在采樣點(diǎn)上沉積量的模擬值最大相對(duì)誤差率不超過7.95%,且模擬值與實(shí)測值均方根誤差RMSE最大為0.076 7 mg/cm~2,霧滴沉積檢測準(zhǔn)確率高,方便實(shí)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(nóng)業(yè)大學(xué)工學(xué)院;中國農(nóng)業(yè)大學(xué)信息與電氣工程學(xué)院;華北電力大學(xué)機(jī)械工程系;
【基金】：科技部國家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目“地面與航空高工效施藥技術(shù)及智能化裝備”(2016YFD0200700);科技部國家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目“現(xiàn)代果園智能化精細(xì)生產(chǎn)管理技術(shù)裝備研發(fā)”(2017YFD0701400)
【分類號(hào)】：S491;TP274
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本文編號(hào)：2417599