Multi-rotor unmanned aerial vehicle emergency stop device and method

Abstract

The invention discloses a multi-rotor unmanned aerial vehicle emergency stop device and method; the device comprises a plurality of speed sensors, a plurality of controllable switches and an independent control module, wherein the speed sensors are mounted in rotor components of a multi-rotor unmanned aerial vehicle and are used for detecting speed of the rotor components; the controllable switches are normally closed switches serially connected between the rotor components and a multi-rotor unmanned aerial vehicle controller; both the speed sensors and the controllable switches are electrically connected with the independent control module; the independent control module is mounted in a body of the multi-rotor unmanned aerial vehicle; the independent control module includes a flight detection circuit, a synchronous detection circuit and a driving circuit. The flight detection circuit and a synchronous detection circuit judge whether the multi-rotor unmanned aerial vehicle needs emergency stop; the driving circuit is used to perform stop controlling. The multi-rotor unmanned aerial vehicle emergency stop device and method can partly provide automatic emergency stop, thus preventingthe rotor components from continuously rotating at high speed in powered state after being impacted.

Description

Technical field [0001] The present invention relates to the technical field of unmanned aerial vehicles, in particular to an emergency shutdown device and method for multi-rotor unmanned aerial vehicles. Background technique [0002] UAV is abbreviated as UAV, which refers to an aircraft that can fly autonomously or remotely without an operator. Multi-rotor UAV is a special unmanned helicopter with three or more rotor shafts, which passes through each axis. The motor on the rotor rotates to drive the rotor to generate lift and thrust. The total pitch of the rotor is fixed, not variable like a normal helicopter. By changing the relative speed between the different rotors, the uniaxial propulsion can be changed to control the aircraft. The running track. [0003] Through market research, it is found that multi-rotor drones often fall due to loss of control. In a fall, under normal circumstances, a certain rotor component will first collide with the ground or other objects, but beca...

AI Technical Summary

Problems solved by technology

When falling, generally, a certain rotor assembly will hit the ground or other objects first, but because the rotor assembly is still under the control of high-speed rotation, the entire body is prone to flipping, causing other rotor assemblies to also be powered Collisions continue to occur in the state of high-speed rotation, and there are great potential safety hazards for the UAV itself and personal safety.

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