Control system and control method of unmanned aerial vehicle

Abstract

The invention discloses a control system and control method of an unmanned aerial vehicle. The control system comprises a flight controller, a microwave sensor, and a microwave liquid level height gauge. The flight controller is used for controlling a flying state of a vehicle body. The microwave sensor that is installed on the vehicle body and is connected with the flight controller is used for detecting an obstacle around the vehicle body and transmitting the position information of the obstacle to the flight controller. The microwave liquid level height gauge that is installed in a pesticide storage box of a pesticide spraying device and is located above a pesticide liquid surface is connected with the flight controller and is used for detecting a pesticide liquid level height in the pesticide storage box and transmitting the liquid level height information to the flight controller. According to the invention, an unmanned aerial vehicle can fly with high safety and collision of the vehicle body with an obstacle can be prevented and thus damages of the vehicle body can be avoided. Besides, the flight height of the unmanned aerial vehicle can be adjusted timely with pesticide spraying, so that the pesticide spraying becomes uniform and effective.

Description

technical field [0001] The invention belongs to the technical field of unmanned aerial vehicle flight control, and in particular relates to an unmanned aerial vehicle control system and an unmanned aerial vehicle control method realized by the control system. Background technique [0002] In modern agriculture, in order to suppress crop diseases, insects, and weed damage, it is necessary to spray pesticides on crops. For small crops, ordinary manual spraying equipment is more cost-effective, but for vast crops on the plains, it is often necessary to use drones to spray pesticides. Compared with traditional manual operations, plant protection UAVs have good spraying and prevention effects, strong assault performance, small amount of spraying liquid per unit area, are not limited by crop growth, and are adaptable to various terrains. [0003] However, the practical application of pesticide spraying by UAVs faces the following two problems and challenges: First, during the fli...

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Problems solved by technology

[0003] However, the practical application of pesticide spraying by UAVs faces the following two problems and challenges: First, during the flight over the farmland, obstacles on the flight path cannot be detected and avoided, thus causing collisions and crashes. , due to the high cost of current drones, a collision or crash will greatly increase the cost of the user

Second, during the pesticide spraying process, as the weight of the pesticide liquid decreases, the overall weight of the drone will change, which will increase the flying height of the drone; however, conventional drone control methods cannot automatically adjust the flying height to ensure The stability of flight height affects the uniformity of pesticide spraying

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