Height control method for near-crop flight of plant protection unmanned aerial vehicle

Abstract

The invention relates to a height control method for near-crop flight of a plant protection unmanned aerial vehicle. The height control method is characterized by utilizing a rang finding module to measure position variation of crops after inclination due to the influence of a wind field, and continuously controlling the flight height of the plant protection unmanned aerial vehicle to meet the plant protection operation requirement. The range finding module is used for detecting the positions of crops, and signals generated by the range finding module are fed back to an autopilot, so that corresponding height control is carried out. By using the control method, the adaptivity of height control of the plant protection unmanned aerial vehicle can be realized, and the control method has the advantages of high efficiency, real-time performance, good plant protection operation effect and the like.

Description

technical field [0001] The present invention relates to a height control method for plant protection drones to fly close to crops, in particular to the situation of lodging of crops after being affected by the wind field of plant protection drones, in order to better complete the spraying operation. A method of height control for flying close to crops. Background technique [0002] At present, altitude control is a very basic function in the control system of UAVs, especially multi-rotor UAVs. However, in the original multi-rotor UAV flight control system, only the attitude control function is realized at present, that is, the function of automatically maintaining the UAV's horizontal stability by using a microcontroller, acceleration and angular velocity sensors. The altitude maintenance depends entirely on the operator to manually control the size of the throttle, and then control the lift generated by the propeller. This operation requires a lot of practice to achieve, ...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above-mentioned technical problems, the present invention provides a method for controlling the height of plant protection drones near crops. By using this method, it is possible to overcome the problem that the fixed-altitude flight in the flight process of the existing plant protection drones cannot realize the spraying operation. Adaptability, according to the lodging situation of different crops, different models can achieve height control after a large number of adjustments, and have better adaptability in height control for different crops, with low cost and good spraying effect.

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