Protective device of unmanned aerial vehicle and unmanned aerial vehicle

Abstract

The utility model discloses a protection device of an unmanned aerial vehicle, which comprises a first protection unit located at the top of the unmanned aerial vehicle and comprising an air bag parachute pack, and the air bag parachute pack comprises a first gas generator and an inflatable parachute belt which are arranged at the top of the unmanned aerial vehicle in a folded shape; the second protection unit is located at the bottom of the unmanned aerial vehicle and comprises an air bag, and the air bag comprises a second gas generator fixedly connected to the unmanned aerial vehicle; the buffering air bag is arranged at the bottom of the unmanned aerial vehicle in a folded state; and the control module is electrically connected with the first gas generator and the second gas generator. When the unmanned aerial vehicle is in a fault state, the control module sequentially generates electronic signals used for triggering the first gas generator and the second gas generator. The problems that when an unmanned aerial vehicle is out of control and crashes, an existing protective air bag is not opened in time, and the risk probability that an unmanned aerial vehicle body is damaged by an existing air bag unfolding mode is high can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicle protection, and in particular to a protective device for an unmanned aerial vehicle and the unmanned aerial vehicle. Background Art

[0002] In today's use of drones, drones are relatively valuable items, and the value of the cargo they carry is generally high. Both the drone and the items it carries are usually of high value. When a drone takes off or lands, or when a malfunction occurs, it is easy for the drone to fall, causing damage to the drone and the items it carries.

[0003] Among them, the normal opening of the parachute bag requires a certain altitude, generally above 100 meters. When the altitude is lower than 100 meters, the probability of the bag not opening will increase significantly. The flight altitude of drones, when taking off and landing, is mostly below 100 meters, when failures are prone to occur. In this case, if the drone falls, the parachute bag does not open normally and cannot provide protection at all.

[0004] At present, the airbags used in drones generally use gunpowder combustion or explosion to generate a large amount of hot gas to inflate the airbags. When gunpowder burns and generates hot gas, the high temperature can easily cause damage to the airbag, fuselage and other accessories.

[0005] If gunpowder explosion is used to generate hot gas to quickly fill the airbag, the fuselage will vibrate. Since the fault has already occurred, this will add unfavorable factors and increase uncertainty. Summary of the invention

[0006] In view of the above shortcomings of the prior art, the purpose of the utility model is to disclose a protective device for an unmanned aerial vehicle and an unmanned aerial vehicle, so as to improve the problem that the existing protective airbags do not open in time enough when the unmanned aerial vehicle loses control and crashes, and the current airbag deployment method has a high probability of damaging the unmanned aerial vehicle body.

[0007] In order to achieve the above-mentioned purpose and other related purposes, the utility model discloses a protective device for an unmanned aerial vehicle, which comprises:

[0008] The first protection unit is located on the top of the drone and includes an airbag parachute package, which includes:

[0009] A first gas generator, fixedly connected to the drone;

[0010] an inflatable parachute strap, folded and arranged on the top of the drone, and connected to the first gas generator;

[0011] The second protection unit is located at the bottom of the drone and includes an airbag package, wherein the airbag package includes:

[0012] A second gas generator is fixedly connected to the drone;

[0013] A cushioning airbag is folded and disposed at the bottom of the drone and is connected to the second gas generator;

[0014] a control module, electrically connected to the first gas generator and the second gas generator;

[0015] Among them, the control module can be used to detect the flight status of the unmanned aircraft. When the unmanned aircraft is in a fault state, the control module generates a first electronic signal and a second electronic signal in sequence, the first electronic signal is used to trigger the first gas generator, and the second electronic signal is used to trigger the second gas generator.

[0016] In one embodiment of the utility model, the parachute strap comprises an umbrella body having an airbag cavity and a plurality of connecting straps, one end of the connecting strap is fixedly connected to the umbrella body, and the other end of the connecting strap is fixedly connected to the drone.

[0017] In one embodiment of the utility model, a first compressed gas tank is further included, which is connected to the first gas generator and the airbag cavity of the umbrella body respectively, and a seal is connected between the airbag cavity and the first compressed gas tank.

[0018] In one embodiment of the utility model, a second compressed gas tank is further included, which is connected to the second gas generator and the buffer airbag respectively, and a seal is connected between the buffer airbag and the second compressed gas tank.

[0019] In one embodiment of the present invention, the first compressed gas tank or the second compressed gas tank is filled with an inert gas.

[0020] In one embodiment of the present invention, the inert gas is helium.

[0021] In one embodiment of the utility model, the cushioning airbag includes a plurality of cavities, the plurality of cavities are connected in sequence, and a seal is provided at the connecting position.

[0022] In one solution of the utility model, the cavities of the cushioning airbags are respectively connected with automatic deflation structures; wherein, from top to bottom in the vertical direction, the deflation pressure thresholds of the automatic deflation structures increase successively.

[0023] In one embodiment of the utility model, the automatic air release structure is an air hole or an air valve.

[0024] The utility model also discloses an unmanned aerial vehicle, which comprises any protective device of the unmanned aerial vehicle described above.

[0025] In summary, the utility model discloses a protective device for a drone and a drone, wherein compressed gas is actively sprayed into an airbag cavity or a cushion airbag, so that the airbag cavity or the cushion airbag is opened with high speed and low failure rate. Its active inflation method is not restricted by height and has a wider range of application scenarios.

[0026] The airbag parachute on the top not only slows down the landing speed and corrects the landing posture, but also increases the buoyancy in the air due to its larger volume after being ejected. When landing, the cushion airbag has a self-discharging device to cushion the impact, making it easier for the drone to be protected. The gas that rushes into the airbag cavity or the cushion airbag is not a conventional gunpowder explosion or other heat device, but a compressed inert gas, which is highly safe. It can effectively improve the existing protective airbags that are not opened in time when the existing drone crashes out of control, and the current airbag deployment method has a high probability of damaging the drone body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0028] Figure 1 This is a schematic diagram of the structure of a protective device for a drone of the utility model in one embodiment;

[0029] Figure 2 FIG. 1 is a schematic diagram of the structure of the protective device of the drone of the utility model after being deployed in one embodiment.

[0030] Component number description

[0031] 100, first protection unit; 110, airbag parachute bag; 111, parachute strap; 112, airbag cavity; 113, parachute body; 114, connecting strap;

[0032] 200, second protection unit; 210, airbag package; 211, cushioning airbag; 212, cavity.

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B.

[0037] See also Figure 1 and Figure 2 The utility model discloses a drone protection device and a drone, which can be used to improve the existing drone protection airbags that are not opened in time when the drone crashes due to loss of control, and the current airbag deployment method that has a high probability of damaging the drone body. Specifically, the drone protection device can include a first protection unit 100, a second protection unit 200 and a control module, and the control module is electrically connected to the first protection unit 100 and the second protection unit 200.

[0038] The first protection unit 100 is located on the top of the drone and includes at least one airbag parachute package 110. When the drone is abnormal, the airbag parachute package 110 is opened, similar to the function of a parachute, to adjust the drone's position and descent speed. By adjusting the drone's attitude, the risk of the drone crashing can be effectively reduced.

[0039] The second protection unit 200 is located at the bottom of the drone, and includes an airbag package 210. When the drone lands, the airbag package 210 can be opened to provide a certain buffer for the drone, thereby reducing the risk of the drone crashing.

[0040] In one embodiment, the airbag parachute bag 110 includes a first gas generator and an inflatable parachute belt 111. The first gas generator is fixedly connected to the drone, and the inflatable parachute belt 111 is folded and arranged on the top of the drone and is connected to the first gas generator. The parachute belt 111 includes an umbrella body 113 with an airbag cavity 112 and a plurality of connecting belts 114, one end of the connecting belt 114 is fixedly connected to the umbrella body 113, and the other end is fixedly connected to the drone. A first compressed gas tank is also connected to the drone, which is respectively connected to the first gas generator and the airbag cavity 112 of the umbrella body 113, and a seal is connected between the airbag cavity 112 and the first compressed gas tank. The first compressed gas tank is filled with compressed gas, and the compressed gas can break through the seal and enter the airbag cavity 112. In the case of low air density and small external resistance, internal inflation can also be relied on to ensure smooth opening of the parachute, further increasing the stability of the opening of the parachute.

[0041] Furthermore, the control module is electrically connected to the first gas generator, and the first gas generator is connected to the first compressed gas tank. Therefore, the first compressed gas tank can be regulated by the first gas generator, so that the compressed gas in the first compressed gas tank breaks through the seal and enters the airbag cavity 112.

[0042] Specifically, the first compressed gas tank is filled with an inert gas, for example, the inert gas may be helium or nitrogen. However, it is not limited thereto and may be determined according to actual needs. The inert low-density gas (helium, nitrogen, etc.) filled into the airbag parachute bag 110 can also provide a certain buoyancy.

[0043] In one embodiment, the airbag package 210 includes a second gas generator and a cushion airbag 211, and the second gas generator is connected to the cushion airbag 211. It can be understood that the second gas generator is fixedly connected to the drone, and the cushion airbag 211 is folded and arranged at the bottom of the drone. By folding the cushion airbag 211, the volume of the drone in actual use can be effectively reduced to improve the actual use effect.

[0044] Among them, a second compressed gas tank is also allowed to be connected in the drone, which is connected to the second gas generator and the buffer airbag 211 respectively, and a seal is connected between the buffer airbag 211 and the second compressed gas tank. The second compressed gas tank is filled with compressed gas, and the compressed gas can break through the seal and enter the buffer airbag 211. Like the first compressed gas tank, the second compressed gas tank is filled with an inert gas, for example, the inert gas can be helium.

[0045] It should be noted that the cushion airbag 211 includes a plurality of cavities 212, which are connected in sequence and are provided with seals at the connecting positions. At the same time, the cavities 212 of the cushion airbag 211 are respectively connected with automatic deflation structures, which are air holes or air valves. It should be noted that the deflation pressure threshold of the automatic deflation structure increases successively from top to bottom in the vertical direction. Therefore, the cushion airbag 211 will be compressed when the drone falls to the ground. When the cushion airbag 211 is squeezed and the internal pressure of the gas reaches a certain value, the gas can break through the weakening treatment area set in the cushion airbag 211, allowing part of the gas to escape, ensuring that the overload of the aircraft does not exceed the design value. At this time, if the cushion airbag 211 is continuously compressed and reaches the secondary weakening value, the secondary weakening area is broken through, and the gas can be continuously released to ensure that the overload does not exceed the limit. Similarly, by designing the deflation pressure thresholds of the automatic deflation structure to increase in sequence, multi-stage weakened deflation can be achieved, while avoiding the occurrence of bouncing / reducing the amplitude of bouncing.

[0046] In one embodiment, a data sensor may be connected to the drone, and the data sensor is electrically connected to the control module. It is understandable that the control module collects fuselage data through the data sensor, and the fuselage data includes but is not limited to linear acceleration, angular velocity, angular acceleration, longitude and latitude position, altitude, etc. After acquiring the data sensor, the control module may allow an electronic trigger signal to be given after processing by the MCU / CPU processor built into the control module. The electronic trigger signal includes a first electronic signal and a second electronic signal. The first electronic signal is used to trigger the first gas generator, and the second electronic signal is used to trigger the second gas generator.

[0047] Specifically, the first electronic signal is used to trigger the first gas generator, and the second electronic signal is used to trigger the second gas generator. The electronic trigger signal triggers the first gas generator or the second gas generator, and the ignition device of the first gas generator or the second gas generator instantly bursts out a gas column, and the gas column breaks the seal of the first compressed gas tank or the second compressed gas tank. After the seal is opened, the gas rushes into the airbag cavity 112 or the buffer airbag 211. After the body of the drone and the buffer airbag 211 land and the buffer airbag 211 contacts the ground, it is easy to bounce due to the accumulation of elastic potential energy. The automatic deflation device of the buffer airbag 211 can ensure that the body and the airbag do not bounce, and the impact force when the body lands is no more than 8g. At the same time, the gas entering the airbag cavity 112 and the opening of the airbag parachute bag 110 can be used at any height and are not limited by the height of the drone.

[0048] It should be noted that the opening of the airbag parachute bag 110 or the cushion airbag 211 can be controlled not only by software algorithms, but also by wireless communication signals to manually control the opening of the airbag parachute bag 110 or the cushion airbag 211. In the case that all programs fail, the controller is manually operated to directly trigger the switch of the gas generator to start working.

[0049] In summary, the utility model discloses a protective device for an unmanned aerial vehicle and an unmanned aerial vehicle, wherein compressed gas is actively sprayed into the airbag cavity 112 or the buffer airbag 211, so that the airbag cavity 112 or the buffer airbag 211 opens with a fast speed and a low failure rate. Its active inflation method is not restricted by height and has a wider range of application scenarios. The upper airbag parachute bag 110 not only slows down the landing speed and corrects the landing posture, but also increases the buoyancy in the air due to its larger volume after being ejected. When the buffer airbag 211 lands, it is buffered by a self-discharging device, so that the unmanned aerial vehicle is more easily protected. The gas rushed into the airbag cavity 112 or the buffer airbag 211 is not a conventional gunpowder explosion or other heat device, but a compressed inert gas, which is highly safe.

[0050] Therefore, it can effectively improve the existing problems that the existing protective airbags are not opened in time when the unmanned aircraft crashes out of control, and the current airbag deployment method has a high probability of damaging the drone body. Therefore, the utility model effectively overcomes some practical problems in the existing technology and has high utilization value and use significance.

[0051] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A protective device for an unmanned aerial vehicle, characterized in that: include: The first protection unit (100) is located on the top of the drone and includes an airbag parachute package (110). The airbag parachute package (110) includes: A first gas generator, fixedly connected to the drone; An inflatable parachute belt (111) is folded and arranged on the top of the drone and is connected to the first gas generator; The second protection unit (200) is located at the bottom of the drone and includes an airbag package (210). The airbag package (210) includes: A second gas generator is fixedly connected to the drone; A cushioning airbag (211) is folded and arranged at the bottom of the drone and is connected to the second gas generator; a control module, electrically connected to the first gas generator and the second gas generator; Among them, the control module can be used to detect the flight status of the unmanned aircraft. When the unmanned aircraft is in a fault state, the control module generates a first electronic signal and a second electronic signal in sequence, wherein the first electronic signal is used to trigger the first gas generator, and the second electronic signal is used to trigger the second gas generator.

2. A protective device for an unmanned aerial vehicle according to claim 1, characterized in that: The parachute strap (111) comprises a parachute body (113) having an airbag cavity (112) and a plurality of connection straps (114); one end of the connection strap (114) is fixedly connected to the parachute body (113), and the other end is fixedly connected to the drone.

3. The protective device for an unmanned aerial vehicle according to claim 2, characterized in that: It also includes a first compressed gas tank, which is connected to the first gas generator and the airbag cavity (112) of the parachute (113) respectively, and a seal is connected between the airbag cavity (112) and the first compressed gas tank.

4. The protective device for an unmanned aerial vehicle according to claim 3, characterized in that: It also includes a second compressed gas tank, which is connected to the second gas generator and the buffer airbag (211) respectively, and a seal is connected between the buffer airbag (211) and the second compressed gas tank.

5. The protective device for an unmanned aerial vehicle according to claim 4, characterized in that: The first compressed gas tank or the second compressed gas tank is filled with an inert gas.

6. The protective device for an unmanned aerial vehicle according to claim 5, characterized in that: The inert gas is helium.

7. The protective device for an unmanned aerial vehicle according to claim 1, characterized in that: The buffer airbag (211) comprises a plurality of cavities (212), the plurality of cavities (212) are connected in sequence, and a seal is provided at the connection position.

8. The protective device for an unmanned aerial vehicle according to claim 7, characterized in that: The cavity (212) of the buffer airbag (211) is respectively connected with an automatic deflation structure; Among them, from top to bottom in the vertical direction, the deflation pressure threshold of the automatic deflation structure increases successively.

9. The protective device for an unmanned aerial vehicle according to claim 8, characterized in that: The automatic air release structure is an air hole or an air valve.

10. A drone, characterized in that: A protective device for a drone comprising any one of claims 1 to 9.

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