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多通道水肥一体化施肥机定量定比混肥系统的研究

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DOI:10.3969/j.issn.1672-3872.2023.17.007

基金项目:合肥职业技术学院自然科学研究项目智能水肥一体化施肥机定量定比混肥控制系统的研究(2023KJB13)

作者:盛文祥,彭诚,储开念(合肥职业技术学院,安徽 合肥 230000)

 

摘 要:【目的】为实现针对不同农作物的不同需求进行科学合理的灌溉与施肥,研发智能化混肥系统自动精准地调控水肥的施加量。【方法】对多通道水肥一体化施肥机定量定比混肥控制系统进行了软硬件设计,建立了多通道液肥定量定比数学模型。根据定量定比混肥系统工作流程以及所建立的数学模型,运用图形化编程语言LabVIEW设计了控制程序,并搭建出试验平台对系统进行了试验验证。【结果】在2.2 kW抽吸泵作用下,该系统能够较好地实现各通道肥液定量定比控制,控制精度较高,验证了数学模型的正确性以及控制系统的可靠性。【结论】通过迭代法计算多通道水肥一体化施肥机混肥系统的各通道成分占比,缩短了系统关键参数调节达到设定值范围的时间,提高了系统的运行效率与稳定性,有利于推动我国现代农业的进一步发展。

关键词:LabVIEW;混肥;定量定比

 
Study on the Quantitative Ratio Mixing Fertilizer System of Multi-channel Water Fertilizer Integration Fertilizer Applicator
Author: Sheng Wenxiang, Peng Cheng, Chu Kainian (Hefei Vocational and Technical College, Anhui Hefei 230000)

 

Abstract: [Objective] To realize scientific and reasonable irrigation and fertilization for different needs of different crops, an intelligent mixing fertilizer system was developed to automatically and precisely regulate the amount of water and fertilizer application. [Method] The software and hardware design of the quantitative and proportional mixing fertilizer system of the multi-channel water and fertilizer integrated fertilizer applicator was carried out, and the mathematical model of the multi-channel liquid fertilizer quantitative and quantitative ratio was established. According to the workflow of the mixing fertilizer system and the established mathematical model, the control program was designed by LabVIEW, a graphical programming language, and the test platform was built to verify the system. [Result] Under the action of 2.2 kW suction pump, the system can better achieve the quantitative and constant ratio control of fertilizer in each channel with high control accuracy, which verifies the correctness of the mathematical model and the reliability of the control system. [Conclusion] The iterative method to calculate the composition ratio of each channel of the mixing fertilizer system of the multi-channel water-fertilizer integrative fertilizer applicator shortens the time for the adjustment of key parameters of the system to reach the range of set values, improves the operation efficiency and stability of the system, and is conducive to promoting the further development of modern agriculture in China.

Keywords: LabVIEW; mixed fertilizer; quantitative ratio

 

引文信息 [1]盛文祥,彭诚,储开念.多通道水肥一体化施肥机定量定比混肥系统的研究[J].南方农机,2023,54(17):25-28.

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