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RISS 인기검색어
- 검색키워드
- 주제어 : Canopy Volume Measurement (검색결과 2 건)
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Research on the Variable Rate Spraying System Based on Canopy Volume Measurement
Hu, Kaiqun,Feng, Xin Korea Information Processing Society 2019 Journal of information processing systems Vol.15 No.5
Characteristics of fruit tree canopies are important target information for adjusting the pesticide application rate in variable rate spraying in orchards. Therefore, the target detection of the canopy characteristics is very important. In this study, a canopy volume measurement method for peach trees was presented and a variable rate spraying system based on canopy volume measurement was developed using the ultrasonic sensing, one of the most effective target detection method. Ten ultrasonic sensors and two flow control units were mounted on the orchard air-assisted sprayer. The ultrasonic sensors were used to detect the canopy diameters and the flow controls were used to modify the flow rate of the nozzles in real time. Two treatments were established: a constant application rate of $300Lha^{-1}$ was set as the control treatment for the comparison with the variable rate application at a $0.095Lm^{-3}$ canopy. The tracer deposition at different parts of peach trees and the tracer losses to the ground (between rows and within rows) were analyzed in detail under constant rate and variable rate application. The results showed that there were no significant differences between two treatments in the liquid distribution and the capability to reach the inner parts of the crop canopies.
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Research on the Variable Rate Spraying System Based on Canopy Volume Measurement
Kaiqun Hu,Xin Feng 한국정보처리학회 2019 Journal of information processing systems Vol.15 No.5
Characteristics of fruit tree canopies are important target information for adjusting the pesticide applicationrate in variable rate spraying in orchards. Therefore, the target detection of the canopy characteristics is veryimportant. In this study, a canopy volume measurement method for peach trees was presented and a variablerate spraying system based on canopy volume measurement was developed using the ultrasonic sensing, one ofthe most effective target detection method. Ten ultrasonic sensors and two flow control units were mounted onthe orchard air-assisted sprayer. The ultrasonic sensors were used to detect the canopy diameters and the flowcontrols were used to modify the flow rate of the nozzles in real time. Two treatments were established: aconstant application rate of 300 Lha-1 was set as the control treatment for the comparison with the variable rateapplication at a 0.095 Lm-3 canopy. The tracer deposition at different parts of peach trees and the tracer lossesto the ground (between rows and within rows) were analyzed in detail under constant rate and variable rateapplication. The results showed that there were no significant differences between two treatments in the liquiddistribution and the capability to reach the inner parts of the crop canopies.
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