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Unmanned aerial vehicle accurate flow control system and method

A control system and flow control technology, applied in the field of drones, can solve problems such as uncontrollable, high pesticide residues, and low effective utilization of chemicals, so as to solve inaccurate measurement, realize flow size and liquid level, and improve accuracy Effect

Inactive Publication Date: 2020-09-18
SHANGHAI INST OF MEASUREMENT & TESTING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This has resulted in low effective utilization of pesticides, high and uncontrollable pesticide residues, and seriously affected my country's agricultural sustainable development strategy.

Method used

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  • Unmanned aerial vehicle accurate flow control system and method
  • Unmanned aerial vehicle accurate flow control system and method

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Experimental program
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Effect test

Embodiment 1

[0031] A UAV precision flow control system, such as figure 1 As shown, it includes a UAV control system and a spraying system, and the spraying system is used to spray medicine according to the spraying control signal sent by the UAV control system; the spraying system includes a spraying device, a spraying control module and a spraying detection module, The spraying device includes a medicine box, a diaphragm pump, and a centrifugal spray head; the spraying detection module is used for real-time detection of the instantaneous flow rate of the spray liquid and the liquid level of the medicine in the medicine box during the spraying of the unmanned aerial vehicle, and sends the detection results to Spraying control module: There is data interaction between the spraying control module and the UAV control system, the spraying control module receives the spraying control signal sent by the UAV control system, and according to the real-time detection result fed back by the spraying ...

Embodiment 2

[0058] A kind of method that utilizes the unmanned aerial vehicle precise flow control system described in embodiment 1 to carry out the method for drug spraying, such as Figure 5 shown, including the following steps:

[0059] (1) Set the operation area of ​​UAV drug spraying, the spraying flow parameters corresponding to each operation area, and the preset minimum liquid level parameters of the medicine box through the UAV control system; at the same time, according to the vegetation characteristics of each operation area , use the drone control system to set the flight route and cruise track of the drone in each operation area to ensure that the spraying covers the entire area and there is no overlapping flight track during the spraying process;

[0060] (2) The unmanned aerial vehicle flies to the first designated operation area according to the positioning information, and the unmanned aerial vehicle control system sends a spraying control signal to the spraying control m...

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Abstract

The invention relates to the technical field of unmanned aerial vehicles, and discloses unmanned aerial vehicle accurate flow control system and method. The unmanned aerial vehicle precise flow control system comprises an unmanned aerial vehicle control system and a spraying system. The spraying system comprises a spraying device, a spraying control module and a spraying detection module. The spraying device comprises a pesticide box, a diaphragm pump and a centrifugal nozzle; the spraying detection module is used for detecting the instantaneous liquid spraying flow of the diaphragm pump and the liquid level of liquid medicine in the pesticide box in the pesticide spraying process of the unmanned aerial vehicle in real time and sending a detection result to the spraying control module; thespraying control module receives a spraying control signal sent by the unmanned aerial vehicle control system and controls the liquid spraying pump according to the spraying control signal and a real-time detection result fed back by the spraying detection module; and the spraying detection module comprises an electromagnetic flowmeter, which is used for detecting the instantaneous flow of spraying liquid and the liquid level in the pesticide box in real time. According to the control system, real-time closed-loop control over the spraying flow and real-time detection over the liquid level ofthe pesticide box can be achieved, and the spraying accuracy is improved.

Description

technical field [0001] The invention relates to the technical field of drones, in particular to a precise flow control system and method for drones. Background technique [0002] In order to meet some special battlefield needs in the military field, humans have invented drones. With the development of technology, the rapid progress of electronic devices and the reduction of cost, the application range of drones has gradually expanded to fields such as agriculture. The application of drones in the field of agricultural plant protection has received more and more attention. Compared with manual operation, drones have more advantages such as controllability, precision, speed, economy, and low pollution. Usually, parameters such as the flow rate of the UAV spraying pesticides and liquid fertilizers are preset and remain unchanged during the operation. The parameters of some UAV equipment are fixed and cannot be adjusted after leaving the factory. This has resulted in low eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64D1/18A01M7/00B64C39/02G05D1/10
CPCB64D1/18A01M7/0089B64C39/02G05D1/101B64U2101/00
Inventor 李雪菁姚新红李海洋张忠立
Owner SHANGHAI INST OF MEASUREMENT & TESTING TECH
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