Return control method and device of unmanned aerial vehicle and unmanned aerial vehicle

Abstract

The invention relates to a return control method and device of an unmanned aerial vehicle and the unmanned aerial vehicle. The method comprises the steps of receiving a return instruction sent from aterminal or automatically triggered by lost protection or automatically triggered by low-battery protection; judging whether prestored displacement correction quantity is effective or not; if not, controlling the unmanned aerial vehicle to return according to a prestored return point; and if yes, controlling the unmanned aerial vehicle to return according to a prestored deviation point. By the method, the unmanned aerial vehicle can be enabled to accurately return, and the loss of the unmanned aerial vehicle of other safety accidents caused by the unmanned aerial vehicle which does not returnto a take-off position can be prevented.

Description

technical field [0001] The present invention relates to the field of unmanned aerial vehicle control, and more specifically, relates to a method, device and unmanned aerial vehicle for returning home control of an unmanned aerial vehicle. Background technique [0002] At present, in an open area, by returning to the take-off position via GPS (or GLONASS / Beidou), coupled with up-and-down image matching, the UAV can achieve precise landing, ensuring that the deviation between take-off and landing positions is about 10cm. [0003] However, if the UAV takes off from an environment with high-rise buildings around it, due to the multi-path interference of GPS, the GPS positioning accuracy error of the aircraft is very large at low altitudes. By returning to the GPS, the position difference between the UAV and the take-off point can be greater than 20m, which is easy Cause the drone to land in an unknown and unsafe place, or cause a safety accident. Contents of the invention [...

AI Technical Summary

Problems solved by technology

[0003] However, if the UAV takes off from an environment with high-rise buildings around it, due to the multi-path interference of GPS, the GPS positioning accuracy error of the aircraft is very large at low altitudes. By returning to the GPS, the position difference between the UAV and the take-off point can be greater than 20m, which is easy Cause the drone to land in an unknown and unsafe place, or cause a safety accident

Images