基于驻波率原理的农药雾滴沉积量检测系统设计与试验
发布时间：2019-01-29 03:34
【摘要】：为实现施药后雾滴地面沉积量的快速获取,该文提出一种基于驻波率原理的叉指型雾滴采集极板结构。为验证该极板结构的合理性,应用三维电磁仿真软件HFSS对此系统进行电磁仿真。HFSS模型求解的结果表明,叉指型极板内部出现了静电屏蔽,极板间通过雾滴能够实现电磁耦合,可用于雾滴沉积量检测,系统灵敏程度将随着极板间距的增大而减小。通过标定试验,建立了检测系统输出电压与试剂溶液沉积量关系的回归方程,测试后2种不同介电常数的胭脂红溶液和丙三醇溶液决定系数R2分别为0.982 1和0.997 6。通过对3W-ZW10型温室自走式喷雾机应用测试,结果表明:该系统在采样点上沉积量的模拟值最大相对误差率不超过7.95%,且模拟值与实测值均方根误差RMSE最大为0.076 7 mg/cm~2,雾滴沉积检测准确率高,方便实用,可用于田间雾滴沉积率的快速测量。
[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.
【作者单位】： 中国农业大学工学院;中国农业大学信息与电气工程学院;华北电力大学机械工程系;
【基金】：科技部国家重点研发计划项目“地面与航空高工效施药技术及智能化装备”(2016YFD0200700);科技部国家重点研发计划项目“现代果园智能化精细生产管理技术装备研发”(2017YFD0701400)
【分类号】：S491;TP274
，
本文编号：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.
【作者单位】： 中国农业大学工学院;中国农业大学信息与电气工程学院;华北电力大学机械工程系;
【基金】：科技部国家重点研发计划项目“地面与航空高工效施药技术及智能化装备”(2016YFD0200700);科技部国家重点研发计划项目“现代果园智能化精细生产管理技术装备研发”(2017YFD0701400)
【分类号】：S491;TP274
，
本文编号：2417599
本文链接：https://www.wllwen.com/kejilunwen/zidonghuakongzhilunwen/2417599.html
