Unmanned aerial vehicle variable-quantity accurate pesticide applying system and method

Abstract

The invention discloses an unmanned aerial vehicle variable-quantity accurate pesticide applying system and method. The system comprises an unmanned aerial vehicle, a tree crown detection system, a pesticide liquid conveying system and a control system. The tree crown detection system is composed of an image acquisition device and a two-dimensional laser ranging scanning device. The pesticide liquid conveying system is composed of a pesticide box, water pumps, connecting pipes and nozzles. The control system is composed of a flight control module and a pesticide application control module. Thevariable-quantity accurate pesticide applying system is finished through the tree crown detection system, the pesticide liquid conveying system and the control system. By the adoption of the variable-quantity accurate pesticide applying method, the unmanned aerial vehicle can be controlled to hover over the center of a tree crown, the relative height of the unmanned aerial vehicle is adjusted, the flow of each water pump is controlled through the pesticide application control module, pesticide is sprayed at multiple points at the same time, so that the accuracy and comprehensiveness of pesticide application are guaranteed, and the state of an illness of a tree is effectively controlled.

Description

technical field [0001] The invention relates to the technical field of plant protection, in particular to a system and method for variable and precise pesticide application by an unmanned aerial vehicle. Background technique [0002] At present, there are several methods of mechanized pesticide application for crown diseases and insect pests: [0003] (1) Ground application. The volatilization is obvious and the residue is serious, which is not convenient for the application of pesticides at high tree crowns, and makes the pesticide diffuse on the soil surface and around the trees, causing a large area of ​​chemical pollution, and the pesticides have a great impact on the ground workers; The requirement of high degree of precision is high, and it is not convenient to enter the dense forestry area to apply pesticides, and the coverage area is limited; [0004] (2) Aerial spraying. On the one hand, large-scale manned aircraft have a large amount of medicine and have a serio...

AI Technical Summary

Problems solved by technology

On the one hand, large-scale manned aircraft have a large amount of medicine and have a heavy impact on the environment; on the other hand, they are costly and have poor maneuverability

At present, although the spraying technology of small drones is developing rapidly, there are still many problems, such as: the accuracy of spraying is still poor, and it is often necessary to expand the spraying area, which causes waste; Insufficient or over-application of pesticides, the application effect is greatly reduced

In addition, in order to increase the penetration of spray droplets to crops, the existing drone spraying module places the spraying nozzle below, and the downward airflow generated improves the adhesion rate of pesticides on the target. Man-machine space, resulting in limited spraying area, unable to effectively cover the canopy in all directions

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