An autonomous safety anti-drop device for unmanned aerial vehicle and its control method

Abstract

The invention discloses an autonomous safety anti-drop device for an unmanned aerial vehicle and a control method thereof. The invention includes a fixed frame, a housing, a MEMS non-metallic quality block, a metal contact, a spring, a gas generating device, a safety airbag, a fixing device, a resistor, a button switch, an electric ignition head, an internal power supply and a control circuit; the invention adopts a mechanical The structure is less affected by the UAV's own circuit and has high reliability; when the ground is used normally, the safety anti-fall device is in the insurance state, which increases the fault tolerance rate of the ground staff; during normal flight, the safety anti-fall device is in the In the working state, when the flight control system fails, etc., the safety anti-drop device can quickly pop out the airbag, on the one hand to protect the safety of the personnel in the flight path, and on the other hand to protect the safety of the drone body; Land safely, and the safety anti-drop device is re-insured, which is convenient for the next use.

Description

technical field [0001] The invention relates to the field of safety devices for drones, in particular to an autonomous safety anti-drop device for drones and a control method thereof. Background technique [0002] With the rapid development of the current drone industry, people have increased the research on drone technology, making it widely used in aerial photography, urban freight, national defense and security and other fields. Although the UAV flight control technology has gradually matured, it can fly for a long time and long distance, and the application scenarios and functions are more diversified, but the safety problem of UAVs has not been effectively solved, whether it is a well-known manufacturer or an OEM. Assembling, crashes have occurred due to technical failures and other reasons. As drones are increasingly used in crowded scenes, crashes caused by equipment failures, emergencies and other reasons have greatly threatened the surrounding population. Causing p...

AI Technical Summary

Problems solved by technology

Although the UAV flight control technology has gradually matured, it can fly for a long time and long distance, and the application scenarios and functions are more diversified, but the safety problem of UAVs has not been effectively solved, whether it is a well-known manufacturer or an OEM. Assembling, crashes have occurred due to technical failures and other reasons. As drones are increasingly used in crowded scenes, crashes caused by equipment failures, emergencies and other reasons have greatly threatened the surrounding population. Cause personal injury and affect the application prospects of drones

On the one hand, current UAV manufacturers use lightweight materials such as plastics to build the fuselage, and use small motors to reduce the weight of the UAV, reduce the kinetic energy and impulse of the crash, and reduce the harm to people. It weakens the carrying capacity of the drone and limits its application to more scenarios; on the other hand, a parachute is installed on the drone, and the opening of the parachute is sent by the ground controller or the flight control system to slow down the landing speed of the drone. However, the parachute is easily entangled with the motor, rotor, etc., and the weight of the parachute is also a problem that cannot be ignored

Therefore, there are two problems to be solved at present: one is the safety problem of drones, how to reduce the harm of drones to people in unexpected situations, so as to reduce the accidents of drone crashes and injuries, the current solution cannot Solve such problems; the second is the weight of the safety anti-drop device. The heavy-duty safety anti-drop device will greatly reduce the flight time of the drone, and the weight of the safety anti-drop device will also increase the kinetic energy and impulse during the descent process. The source of injury has shifted from the drone to the safety anti-drop device, so it is of great practical significance to design an autonomous safety anti-drop device for light drones

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