An adaptive variable spraying control device and method

Abstract

The invention provides a self-adaptive variable spraying control device and method. A flow sensor and a pressure sensor are arranged in a pipeline connected with a variable control valve and a spray head. The method includes, firstly, collecting a plurality of groups of mutually corresponding spray head pressures and spray head flows in real time, and judging and knowing the real-time flow of spray heads to be in a stable state according to a plurality of spray head flow; and then, acquiring a spray head correction coefficient according to a plurality of groups of spray head pressure and sprayhead flow, and the standard pressure range and the standard flow corresponding to the standard pressure range of the standard spray head, and correcting and adjusting the real-time flow of the sprayheads according to the spray head correction coefficient. The method can correct and adjust the real-time flow of the spray heads under the conditions of blockage and abrasion of the spray heads, different types of the spray heads and unclean water caused by impurity deposition in pipelines, and thus the flow of the spray heads can be adaptively adjusted, so that the real-time flow of the spray heads is accurately controlled, and the real-time flow of the spray heads is close to the flow under the condition of no blockage or abrasion or close to the flow of the standard spray head.

Description

technical field [0001] The invention relates to the technical field of agricultural spraying, in particular to an adaptive variable spraying control device and method. Background technique [0002] Due to the clogging and wear of the nozzles of the traditional liquid fertilizer and liquid medicine spraying machinery during the spraying operation, or the different types of nozzles such as the use of non-standard nozzles, and the unclean water caused by the deposition of impurities in the pipeline, liquid fertilizers will Or the problem of uneven spraying of liquid medicine. In order to solve this problem, it is often necessary to increase the amount of pesticide application by spraying multiple times, which not only makes the utilization rate of the medicinal solution low, but also easily causes environmental pollution. [0003] At present, there are mainly two ways to adjust the flow of the nozzle. The first is to adjust the pressure of the nozzle to adjust the flow of the ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the current variable spraying control system only uses pressure sensors or flow sensors to control the flow rate of the nozzles, it is not accurate, and it cannot adapt to the clogging and wear of the nozzles, or the types of nozzles are different, such as the use of non-standard nozzles, and the deposition of impurities in the pipeline. The water is unclean, which leads to uneven spraying of liquid fertilizer and liquid medicine. Embodiments of the present invention provide an adaptive variable spraying control device and method

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