Anti-falling protection device applied to unmanned aerial vehicle

Abstract

The utility model discloses an anti-falling protection device applied to an unmanned aerial vehicle. The anti-falling protection device comprises an anti-falling protection unit, an unmanned aerial vehicle state detection unit and a control unit, the anti-falling protection unit comprises a gas cylinder arranged in a cavity of the unmanned aerial vehicle and a gas bag arranged at the bottom of the unmanned aerial vehicle; the gas output end of the gas cylinder is connected with the gas input end of the gas bag through the electromagnetic valve; the gas cylinder is filled with gas; the unmanned aerial vehicle state detection unit comprises a three-axis gyroscope and a tilt angle sensor which are arranged on the unmanned aerial vehicle; the control unit comprises a controller arranged on the unmanned aerial vehicle; the signal input end of the controller is connected with the signal output end of the three-axis gyroscope and the signal output end of the tilt angle sensor. And the control output end of the controller is connected with the control end of the electromagnetic valve. When the unmanned aerial vehicle falls at a high speed, anti-falling protection can be carried out in time, the collision damage of the unmanned aerial vehicle is reduced, and the service life of the unmanned aerial vehicle is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of unmanned aerial vehicles, and in particular to an anti-fall protection device applied to unmanned aerial vehicles. Background Art

[0002] Drones can be used in many fields such as aerial photography, agriculture, infrastructure monitoring, emergency rescue, etc., which not only improves work efficiency but also reduces the risk of personnel in some tasks. It has injected new impetus into the development of modern science and technology and industry, and created more intelligent and sustainable multifunctional applications.

[0003] If a drone accidentally touches a wire or tree, loses data link, or encounters a sudden power outage during an inspection, it is likely to lose control and fall at high speed. The rigid structure of the drone itself or external protection devices alone cannot effectively protect the drone equipment, and will still cause large-scale damage to the drone.

[0004] Therefore, in order to reduce the damage of the drone after it hits the ground when the drone loses control and falls at high speed, there is an urgent need for an anti-fall protection device that can provide timely anti-fall protection when the drone falls at high speed, reduce the impact damage of the drone, and increase the service life of the drone. Utility Model Content

[0005] In view of this, the purpose of the utility model is to overcome the defects in the prior art and provide an anti-fall protection device for drones, which can provide timely anti-fall protection when the drone falls at high speed, reduce the impact damage of the drone, and increase the service life of the drone.

[0006] The utility model is an anti-fall protection device applied to a drone, comprising an anti-fall protection unit, a drone state detection unit and a control unit;

[0007] The anti-fall protection unit includes a gas cylinder arranged in the cavity of the drone and an air bag arranged at the bottom of the drone; the gas output end of the gas cylinder is connected to the gas input end of the air bag through a solenoid valve; the gas cylinder is filled with gas;

[0008] The drone state detection unit includes a three-axis gyroscope and a tilt sensor provided on the drone;

[0009] The control unit includes a controller arranged on the drone; a signal input end of the controller is respectively connected to a signal output end of a three-axis gyroscope and a tilt sensor; and a control output end of the controller is connected to a control end of a solenoid valve.

[0010] Furthermore, the solenoid valve is a one-way solenoid valve; the gas input end of the one-way solenoid valve is connected to the gas output end of the gas cylinder, and the gas output end of the one-way solenoid valve is connected to the gas input end of the airbag.

[0011] Furthermore, the gas cylinder is a compressed gas cylinder.

[0012] Furthermore, the airbag is a rubber airbag or a silicone airbag.

[0013] Furthermore, the gas output end of the one-way solenoid valve is connected to the gas input end of the airbag through a micro exhaust fan; and the control input end of the micro exhaust fan is connected to the control output end of the controller.

[0014] The beneficial effect of the utility model is as follows: the utility model discloses an anti-fall protection device applied to a drone, which can monitor the flight status of the drone in real time, promptly determine the state of the drone about to fall, and then promptly inflate the protective airbag, so that when the drone falls to the ground, the impact damage of the drone can be minimized, the number of maintenance times of the drone is reduced, and the service life of the drone is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure between the gas cylinder and the air bag of the utility model;

[0018] Among them, 1-gas cylinder, 2-solenoid valve, 3-micro exhaust fan, 4-air bag. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings of the specification, as shown in the figure:

[0020] The utility model is an anti-fall protection device applied to a drone, comprising an anti-fall protection unit, a drone state detection unit and a control unit;

[0021] The anti-fall protection unit includes a gas cylinder 1 arranged in the cavity of the drone and an airbag 4 arranged at the bottom of the drone; the gas output end of the gas cylinder 1 is connected to the gas input end of the airbag 4 through an electromagnetic valve 2; the gas cylinder 1 is filled with gas; wherein, a certain amount of gas is filled in the gas cylinder 1, and after the electromagnetic valve 2 is opened, the gas can flow into the airbag 4 under the action of the air pressure difference.

[0022] The drone state detection unit includes a three-axis gyroscope and a tilt sensor provided on the drone; wherein the three-axis gyroscope is used to detect the angular velocity of the drone, and by monitoring the angular velocity output by the three-axis gyroscope, it is possible to detect whether the rotation speed of the drone is abnormal. The tilt sensor is used to monitor the tilt angle of the drone, and if the tilt angle changes beyond a normal range, it indicates that the drone is in an abnormal state.

[0023] The control unit includes a controller arranged on the drone; the signal input end of the controller is respectively connected to the signal output ends of the three-axis gyroscope and the tilt sensor; the control output end of the controller is connected to the control end of the solenoid valve 2.

[0024] Among them, when the angular velocity detected by the three-axis gyroscope is not within the normal value range of the angular velocity of the drone, it indicates that the drone is operating abnormally and there is a risk of losing control and falling. The control output end of the controller outputs a control signal to control the solenoid valve 2 to open, so that the gas in the gas cylinder 1 enters the airbag 4, thereby causing the airbag 4 to inflate. When the drone falls to the ground, it plays a shock-absorbing and buffering role, thereby reducing the damage to the drone. In order to more fully monitor the operating status of the drone, it is also necessary to detect the operating inclination angle of the drone. When the inclination angle detected by the inclination sensor is not within the normal value range of the drone's inclination angle, it also indicates that the drone is operating abnormally and there is a risk of losing control and falling. The control output end of the controller outputs a control signal to control the solenoid valve 2 to open.

[0025] As long as at least one of the detected angular velocity and the detected tilt angle does not meet the normal value range, the solenoid valve 2 is opened, and the gas in the gas cylinder 1 enters the airbag 4, causing the airbag 4 to swell. The controller uses an existing single-chip microcomputer, which can use an existing STM32 or EFM32 or MSP430 single-chip microcomputer, etc. In actual working conditions, the various pins of the single-chip microcomputer are connected according to the specification of the single-chip microcomputer. Of course, the controller pre-stores the normal value range of the angular velocity of the drone and the normal value range of the tilt angle, which will not be repeated here.

[0026] In this embodiment, the solenoid valve 2 is a one-way solenoid valve; the gas input end of the one-way solenoid valve is connected to the gas output end of the gas cylinder 1, and the gas output end of the one-way solenoid valve is connected to the gas input end of the airbag 4. By providing a one-way solenoid valve, the gas entering the airbag 4 can be prevented from flowing back to the gas cylinder 1, so that the gas can fully enter the airbag 4, ensuring the shock absorption and buffering effect of the airbag 4.

[0027] In this embodiment, the gas cylinder 1 is a compressed gas cylinder. By providing a compressed gas cylinder, a large amount of gas can be stored in a relatively small gas cylinder 1 container, thereby ensuring a sufficient gas source.

[0028] In this embodiment, the airbag 4 is a rubber airbag or a silicone airbag. The airbag 4 can form a buffer layer when the drone lands, mitigate the landing impact, and reduce the damage to the drone and the surrounding environment. By providing a rubber airbag or a silicone airbag, the wear resistance of the airbag 4 is improved, which is beneficial to the long-term stable use of the airbag 4.

[0029] In this embodiment, the gas output end of the one-way electromagnetic valve is connected to the gas input end of the airbag 4 through the micro-exhaust fan 3; the control input end of the micro-exhaust fan 3 is connected to the control output end of the controller. After the electromagnetic valve 2 is turned on, the controller controls the electric control switch to turn on, so that the micro-exhaust fan 3 is powered on and starts to operate; by setting the micro-exhaust fan 3, on the one hand, it can be applied to limited space and is conducive to assembly and arrangement; on the other hand, the residual gas in the gas cylinder 1 can be extracted into the airbag 4, so that the gas can fully flow into the airbag 4.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An anti-fall protection device for a drone, characterized in that: It includes an anti-fall protection unit, a drone status detection unit, and a control unit; The anti-fall protection unit includes a gas cylinder arranged in the cavity of the drone and an air bag arranged at the bottom of the drone; the gas output end of the gas cylinder is connected to the gas input end of the air bag through a solenoid valve; the gas cylinder is filled with gas; The drone state detection unit includes a three-axis gyroscope and a tilt sensor provided on the drone; The control unit includes a controller arranged on the drone; a signal input end of the controller is respectively connected to a signal output end of a three-axis gyroscope and a tilt sensor; a control output end of the controller is connected to a control end of a solenoid valve; The solenoid valve is a one-way solenoid valve; the gas input end of the one-way solenoid valve is connected to the gas output end of the gas cylinder, and the gas output end of the one-way solenoid valve is connected to the gas input end of the airbag through a micro exhaust fan; the control input end of the micro exhaust fan is connected to the control output end of the controller.

2. The anti-fall protection device for drone according to claim 1 is characterized in that: The gas cylinder is a compressed gas cylinder.

3. The anti-fall protection device for drone according to claim 1 is characterized in that: The airbag is a rubber airbag or a silica gel airbag.

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