Variable Rate Liquid Fertilizer Applicator for Deep-fertilization in Precision Farming Based on ZigBee Technology

被引：19
|
作者：
Xue Xiuyun [1 ]
Xu Xufeng [1 ]
Zhang Zelong [1 ]
Zhang Bin [1 ]
Song Shuran [1 ]
Li Zhen [1 ]
Hong Tiansheng [1 ]
Huang Huixian [1 ]
机构：
[1] South China Agr Univ, Coll Elect Engn, Guangzhou 510642, Guangdong, Peoples R China
来源：
IFAC PAPERSONLINE | 2019年 / 52卷 / 30期
关键词：
Precision Agriculture and Variable Rate Technologies; Wireless Sensor Network; Liquid fertilizer; Deep-fertilization; ZigBee;
D O I：
10.1016/j.ifacol.2019.12.487
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this article, a variable rate liquid fertilizer applicator for deep-fertilization based on ZigBee technology was elaborated. A host computer with remote control software and a STM32F103RET6 microcontroller were combined to measure and control the liquid fertilizer output: monitoring the liquid fertilizer level and collection the liquid flow information by the flow meter, and an incremental PID control algorithm was used to dynamically adjust the converter frequency for reaching the set liquid fertilizer flow accurately. Through the field test, the influence of parameters, such as fertilization depth, frequency of inverter, pressure of fertilizer injection, and the valve opening for water return of liquid fertilizer pump, on precise flow control is analyzed, and the mathematical model is established by using experimental data. The results showed that, the applicator accuracy is able to reach 99.52% and the liquid fertilizer consumption in each fertilization process is within 0.2L.min(-1), with the fertilizer application depth changing, the maximum flow output difference is within 0.2L.min(-1) and the inverter frequency difference is within 1Hz. When the valve opening for back water is 40%, the system works most stable and the flow output error is the smallest. (C) 2019, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.
引用
收藏
页码：43 / 50
页数：8
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