Multi-rotor unmanned aerial vehicle emergency parachute device and method for self-adaptive adjustment of ejection angle

Abstract

The invention discloses a multi-rotor unmanned aerial vehicle emergency parachute device and method for adaptively adjusting the ejection angle. Device, inertial motion measurement unit and spring bracket rotation device; the umbrella compartment cover is fixed on the umbrella compartment under the joint action of the unlocking steering gear and the lock bolt, and the umbrella compartment is fixed on the multi-rotor UAV; the parachute, The parachute throwing spring, microcontroller, inertial motion measurement unit and spring support rotating device are arranged in the structure composed of the umbrella compartment and the umbrella compartment cover; One end of the parachute spring is fixed on the spring bracket rotating device, and the other end is fixed on the parachute. The present invention adjusts the ejection angle of the spring self-adaptively, so that the parachute can be ejected vertically upward even when the posture of the multi-rotor UAV is greatly deflected and tilted.

Description

Technical field [0001] The invention relates to an unmanned aerial vehicle parachute landing device and method, in particular to an emergency parachute landing device and method for a multi-rotor unmanned aerial vehicle capable of adaptively adjusting the ejection angle, belonging to the research field of agricultural unmanned aerial vehicles. Background technique [0002] Multi-rotor UAV is a special unmanned helicopter with three or more rotor shafts. It is a hot spot in the current aviation field. There are a lot of needs in practical applications, such as reconnaissance and rescue missions, scientific data collection , Geology, forestry prospecting, agricultural pest control, video surveillance, film production, etc. Using unmanned aerial vehicles to complete the above tasks can greatly reduce costs and improve personnel safety. Therefore, in recent years, unmanned aerial vehicles have developed rapidly in the military, civilian, and especially agricultural fields. However,...

AI Technical Summary

Problems solved by technology

However, at present, due to terrain, landform, obstacles, operation and other problems, drones are prone to various sudden risks, which may even lead to crashes and bombings, causing large economic losses to users and farmers.

[0003] At present, the UAV parachute device mostly adopts the method of directly ejecting the parachute outward to implement self-rescue. When the UAV attitude does not change significantly, the parachute device can work normally, but when the UAV has a large deflection and tilt Under such circumstances, due to the oblique shift of the ejection angle, the parachute device is not easy to open in time and effectively, thereby reducing the success rate of self-rescue of the UAV.

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