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Method, device and system for flow control of liquid extraction device of plant protection machine

A technology of flow control and plant protection machine, which is applied in the direction of capturing or killing insects, pump control, launching devices, etc., which can solve the problems of inability to achieve accurate spraying or accurate feeding, and achieve accurate spraying, cost reduction, and accurate feeding. Effect

Inactive Publication Date: 2018-12-21
SZ DJI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the flowmeter is a vulnerable device, if the flowmeter is damaged, accurate spraying or accurate feeding cannot be achieved

Method used

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  • Method, device and system for flow control of liquid extraction device of plant protection machine
  • Method, device and system for flow control of liquid extraction device of plant protection machine
  • Method, device and system for flow control of liquid extraction device of plant protection machine

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Embodiment Construction

[0037] The technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or there can also be an intervening component. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be intervening components at the same time.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood...

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PUM

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Abstract

Provided is a method for flow control of liquid extraction devices (22, 33) of plant protection machines (21, 31). The control method comprises: obtaining target flow rate of extracted liquid; determining rotational speed of the liquid extraction device corresponding to the target flow rate based on a preset correlation, wherein the preset correlation is a relationship between flow rate and rotational speed of the liquid extraction devices; controlling the liquid extraction device to rotate at the rotational speed to extract liquid. In a flow control system to which the control method is applied, the liquid extraction device is arranged on a ground station (32), and the liquid extraction device comprises one or more processors (13, 223, 333) for acquiring the target flow rate of the extracted liquid, determining the rotational speed of the liquid extraction device corresponding to the target flow rate, and controlling the liquid extraction device to rotate at the rotational speed. Thecontrol system and the system can realize accurate control of flow rate.

Description

technical field [0001] The present application relates to the technical field of agricultural drones, in particular to a flow control method, device and system for a liquid extraction device of a plant protection machine. Background technique [0002] In the field of agricultural spraying, in order to achieve precise spraying, it is necessary to accurately control the spraying flow of pesticides during the spraying operation. On the other hand, when the pesticide in the water pump is used up and needs to be fed, in order to achieve precise feeding and avoid the situation of adding too much or too little, it is usually necessary to accurately control the flow of feeding during the feeding process. The traditional control method is to combine the water pump with the flowmeter, and perform closed-loop control through the flowmeter and the throttle of the water pump. However, since the flowmeter is a vulnerable device, if the flowmeter is damaged, accurate spraying or accurate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/20F04B49/06A01M7/00B64D1/18
CPCA01M7/005A01M7/0089F04B49/065F04B49/20B64D1/18B64U2101/45B64U50/19
Inventor 石雄飞何纲
Owner SZ DJI TECH CO LTD