Autonomous safety anti-falling device for unmanned aerial vehicle and control method of autonomous safety anti-falling device

Abstract

The invention discloses an autonomous safety anti-falling device for an unmanned aerial vehicle and a control method of the autonomous safety anti-falling device. The device comprises a fixing frame, a shell, an MEMS nonmetal mass block, a metal contact, a spring, a gas generation device, a safety airbag, a fixing device, a resistor, a button switch, an electric ignition head, an internal power source and a control circuit. A mechanical structure is adopted, the influence of a circuit of the unmanned aerial vehicle is small, and the reliability is high; during normal use on the ground, the safety anti-falling device is in a safe state, so that the fault-tolerant rate of operation of ground workers is increased; in the normal flight process, the safety anti-falling device is in a to-be-operated state, and the safety anti-falling device can quickly pop up the safety air bag when a flight control system fails, so that on one hand, the safety of personnel in a flight path is protected, and on the other hand, the safety of the unmanned aerial vehicle body is protected; and if no situation occurs and safe landing occurs, the safe anti-falling device is protected again, and use next time is facilitated.

Description

technical field [0001] The invention relates to the field of drone safety devices, 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 person...

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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