An Intermittent Fertilization Control System for Fruit Tree Crown Detection

Hao Yin, Pengyu Jing, Chen Ma, Liewang Cao, Chengsong Li and Lihong Wang ()
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Hao Yin: College of Engineering and Technology, Southwest University, Chongqing 400715, China
Pengyu Jing: School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
Chen Ma: College of Engineering and Technology, Southwest University, Chongqing 400715, China
Liewang Cao: College of Engineering and Technology, Southwest University, Chongqing 400715, China
Chengsong Li: College of Engineering and Technology, Southwest University, Chongqing 400715, China
Lihong Wang: College of Engineering and Technology, Southwest University, Chongqing 400715, China

Agriculture, 2024, vol. 14, issue 11, 1-19

Abstract: In light of the current dearth of strip intermittent fertilization devices in standardized orchards, this study presents the design of an intermittent fertilization control system based on fruit tree crown detection, developed with the objective of meeting the agronomic requirements of strip furrow fertilization in standardized orchards. The initial stage of the process entails the design of the essential components of the fertilization apparatus, followed by the construction of the intermittent fertilization control system. The ultrasonic sensor was employed as the fruit tree crown detection module, and a mathematical model of fertilization speed was constructed to achieve uniform intermittent fertilization. Furthermore, in order to enhance the responsiveness and reliability of the fertilization servo motor, MATLAB Simulink was employed to assess the dynamic performance of the system under disparate control strategies. Ultimately, to validate the simulation outcomes, a field trial was conducted to assess the precision and uniformity of intermittent fertilization. The results demonstrate that the dynamic performance of the system under the fuzzy PID control strategy is optimal, and the coefficient of variation of the fertilizer uniformity of the intermittent fertilization device is less than 7%. The mean effective fertilization rate exceeded 85%, with the primary indices satisfying the agronomic criteria.

Keywords: intermittent fertilization; ultrasonic wave detection; mathematical model; fuzzy theory (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2024
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