Spraying system for plant protection unmanned aerial vehicle and switching method thereof

Abstract

The invention discloses a spraying system for a plant protection unmanned aerial vehicle and a switching method thereof. The spraying system comprises a plant protection unmanned aerial vehicle frame,a water pump, a nozzle group A, a nozzle group B, a central control module, an electromagnetic valve A, an electromagnetic valve B, a water outlet pipe A, a water outlet pipe B, a water inlet pipe A,a water inlet pipe B and a pose sensor. The flight direction of the plant protection unmanned aerial vehicle is detected through the pose sensor; when the plant protection unmanned aerial vehicle isdetected to fly forwards, the electromagnetic valve B arranged at the rear part of the rack is opened through the central control module and the electromagnetic valve A arranged at the front part of the rack is closed, so that the water pump opens a rear water path to spray pesticide; when the plant protection unmanned aerial vehicle is detected to fly backwards, the electromagnetic valve A arranged on the front portion of the rack is opened and the electromagnetic valve B arranged on the rear portion of the rack is closed through the central control module, so that the water pump opens a front water way to spray pesticide. Therefore, the pesticide sprayed out is sprayed to the rear portion of the flying direction of the plant protection unmanned aerial vehicle when only one water pump isused and cannot be sprayed to the plant protection unmanned aerial vehicle.

Description

technical field [0001] The invention relates to the technical field of unmanned aerial vehicles, in particular to a spraying system for plant protection drones and a switching method thereof. Background technique [0002] When the plant protection UAV is working outdoors, the traditional pesticide spraying mode is a combination of a water pump and four nozzles. Among them, the four nozzles are two in the front and two in the back. However, when the four nozzles are turned on at the same time, it will cause Pesticides adhere to the surface of the drone and affect the spraying effect. The existing solution is to open the rear nozzle when the UAV is flying forward, and open the front nozzle when the UAV is flying backward. Although the problem of sprayed pesticides adhering to the surface of the UAV is solved to a certain extent, However, to realize this function currently requires two sets of spraying systems to work together, that is, two water pumps are required, but the we...

AI Technical Summary

Problems solved by technology

[0002] When the plant protection UAV is working outdoors, the traditional pesticide spraying mode is a combination of a water pump and four nozzles. Among them, the four nozzles are two in the front and two in the back. However, when the four nozzles are turned on at the same time, it will cause Pesticides adhere to the surface of the drone and affect the spraying effect

The existing solution is to open the rear nozzle when the UAV is flying forward, and open the front nozzle when the UAV is flying backward. Although the problem of sprayed pesticides adhering to the surface of the UAV is solved to a certain extent, However, to realize this function currently requires two sets of spraying systems to work together, that is, two water pumps are required, but the weight of the water pump is relatively large, about one kilogram, which increases the load weight of the plant protection drone during operation and reduces the weight of the plant protection drone. The single use time is long, so there is an urgent need for a convenient and lightweight plant protection drone spraying system and its switching method to solve this problem

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