Multi-rotor unmanned aerial vehicle emergency parachuting device with adaptive ejection angle adjustment function and method

Abstract

The invention discloses a multi-rotor unmanned aerial vehicle emergency parachuting device with an adaptive ejection angle adjustment function and a method. The device comprises a parachute cabin, a parachute cabin cover, a parachute, a parachute throwing spring, a lock bolt, an unlocking steering engine, a microcontroller, an inertial motion measuring unit and a spring support rotating device. The parachute cabin cover is fixed to the parachute cabin under the combined action of the unlocking steering engine and the lock bolt, and the parachute cabin is fixed to a multi-rotor unmanned aerial vehicle; the parachute, the parachute throwing spring, the microcontroller, the inertial motion measuring unit and the spring support rotating device are arranged in a structure formed by the parachute cabin and the parachute cabin cover; the microcontroller is connected with the unlocking steering engine, the inertial motion measuring unit and the spring support rotating device, one end of the parachute throwing spring is fixed to the spring support rotating device, and the other end of the parachute throwing spring is fixed to the parachute. By adaptively adjusting the spring ejection angle, it can be guaranteed that the parachute is ejected vertically upwards even when the posture of the multi-rotor unmanned aerial vehicle has large deflection or inclination.

Description

technical field [0001] The invention relates to a UAV parachute device and method, in particular to a multi-rotor UAV emergency parachute device and method for adaptively adjusting the ejection angle, and belongs to the field of agricultural UAV research. Background technique [0002] Multi-rotor UAV is a special unmanned helicopter with three or more rotor shafts. It is a hot spot in the field of aviation research. There are a lot of demands in practical applications, such as: reconnaissance and rescue missions, scientific data collection , geological and forestry exploration, agricultural pest control, video surveillance, film and television production, etc. Using unmanned aerial vehicles to complete the above tasks can greatly reduce costs and improve personnel safety. Therefore, unmanned aerial vehicles have developed rapidly in military, civilian, and especially agricultural fields in recent years. However, at present, various unexpected risks are prone to occur due t...

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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