Unmanned aerial vehicle safety airbag protection device

Abstract

The invention discloses an unmanned aerial vehicle safety airbag protection device, which belongs to the field of unmanned aerial vehicle protection equipment, and comprises a central processing unit, an acceleration sensor, an air pressure altitude sensor, an infrared obstacle avoidance sensor, a reaction cavity and a heating element, the air pressure height sensor is used for detecting the atmospheric pressure at the flight height of the unmanned aerial vehicle body, and the infrared obstacle avoidance sensor is used for detecting whether an obstacle exists in a set distance range around when the unmanned aerial vehicle body flies; a reaction cavity is formed in the unmanned aerial vehicle body, a combustion medium capable of deflagration and generating gas is contained in the reaction cavity, when data detected by the sensor is abnormal, the heating element emits heat to ignite the combustion medium, and the gas generated by the combustion medium is input into the air bag through a connecting pipe to enable the air bag to expand and pop out. The unmanned aerial vehicle body is prevented from being damaged or hurting people.

Description

Technical Field

[0001] The invention relates to the technical field of drone protection equipment, and specifically to a drone airbag protection device. Background Art

[0002] A drone airbag system with announcement number CN217805307U includes an upper airbag assembly and a lower airbag assembly; the upper airbag assembly is installed above the drone; the upper airbag assembly includes a shell, an airbag, an air pump, and a battery; the shell includes a body, and a detachable upper cover and a bottom cover are installed on the upper and lower sides of the body respectively; a folded airbag is fixed in the middle of the body; an air pump is installed on one side of the airbag, and the air pump is connected to the airbag through an air pipe; a battery is installed on the other side of the airbag; the structure of the lower airbag assembly is the same as that of the upper airbag assembly, and the lower airbag assembly and the upper airbag assembly are symmetrically installed under the drone; the upper airbag assembly and the lower airbag assembly sandwich the drone in the middle and are connected through a connecting plate. In the invention, airbag assemblies are installed on the upper and lower sides of the drone respectively, and after opening, the six sides of the drone are covered, so there is no need to worry about the drone's aerial posture, and the landing is cushioned, which protects the drone and protects the safety of people and objects on the ground at the same time.

[0003] The above-mentioned airbag is inflated by an air pump, but the inflation speed of the air pump is slow. The speed of the drone is fast when flying, and the inflation speed of the air pump cannot meet the demand of timely response of the airbag, which will cause the drone to hit an obstacle before the airbag is filled with gas, thereby causing damage to people and property. Therefore, a drone safety airbag protection device is needed to meet people's needs. Summary of the invention

[0004] The purpose of the invention is to provide a drone airbag protection device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the invention provides the following technical solutions: a drone airbag protection device, comprising an airbag installed on a drone body, and also comprising a central processing unit, an acceleration sensor, an air pressure altitude sensor, an infrared obstacle avoidance sensor, a reaction chamber, and a heating element, wherein the acceleration sensor is used to detect the acceleration of the drone body during flight, the air pressure altitude sensor is used to detect the atmospheric pressure at the flight altitude of the drone body, and the infrared obstacle avoidance sensor is used to detect whether there are obstacles within a set distance range around the drone body during flight; the reaction chamber is filled with a combustion medium that can explode and generate gas, and when the data detected by the sensor meets any of the following conditions, the heating element heats up and ignites the combustion medium, and the gas generated by the combustion medium is input into the airbag through a connecting pipe to cause it to expand and pop out: Case 1: the air pressure altitude sensor detects that the air pressure change exceeds the set value, and the acceleration sensor detects that the drone body itself is not accelerated; Case 2: the acceleration sensor monitors that the drone body itself is in an accelerated state, and the infrared obstacle avoidance sensor detects an obstacle.

[0006] Furthermore, an integration center is fixedly installed above the drone body, a lower mounting block is fixedly installed at the bottom of the drone body, airbag storage boxes are fixedly installed on the integration center and the lower mounting block, and the airbags are installed in the airbag storage boxes; an airbag device is provided in the integration center, and the airbag device includes a protective plate, which is fixedly installed in the integration center, and a gas generator is fixedly installed in the area enclosed by the protective plate, and the reaction chamber is provided in the gas generator.

[0007] Furthermore, an independent power supply is fixedly installed in the integrated center, a central processing unit is fixedly installed on one side of the independent power supply, and the independent power supply supplies power to the central processing unit and the heating element through connecting wires.

[0008] Furthermore, the connecting tube includes a first connecting tube and a second connecting tube respectively connecting the upper and lower air bags; the reaction chamber is provided with a first air outlet and a second air outlet connected thereto, the first air outlet is fixedly installed in the first connecting tube, and the second air outlet is fixedly installed in the second connecting tube.

[0009] Furthermore, the airbag near the integration center is fixedly connected to the first connecting pipe and communicates with each other; the airbag near the lower mounting block is fixedly connected to the second connecting pipe and communicates with each other.

[0010] Furthermore, the air pressure altitude sensor and the acceleration sensor are fixedly installed in the integration center, and the air pressure altitude sensor and the acceleration sensor are both electrically connected to the central processing unit.

[0011] Furthermore, after the airbag is fully ejected from the airbag storage box, the entire drone is covered from both the upper and lower directions, and the ends of the two airbags facing each other are concave to completely accommodate the drone body without contact, and the edges of the ends of the two airbags connected to each other are squeezed and sealed to contact each other.

[0012] Furthermore, the heating element is a resistance wire, and the combustion medium is guanidine nitrate.

[0013] Furthermore, the infrared obstacle avoidance sensor is fixedly mounted on the drone body, and the infrared obstacle avoidance sensor is electrically connected to the central processing unit.

[0014] Furthermore, the airbag storage box includes a storage bin for accommodating the compressed airbag, the side wall at the top opening of the storage bin is provided with an annular groove, and the edge portion of an inflated closed membrane bag is tightly embedded in the annular groove; a striker is vertically slidably installed in the side wall below the annular groove, and a slider is fixed to one side of the bottom end of the striker, and the slider is vertically slidably installed on the bin wall of the storage bin, and the compressed airbag is stored in the space of the storage bin below the slider, and when the airbag pops up, the slider is pushed upward so that the striker pierces the closed membrane bag, and the closed membrane bag is disconnected from the annular groove due to shrinkage.

[0015] Compared with the prior art, the invention has the following beneficial effects: The invention uses an air pressure altitude sensor to monitor air pressure changes to determine whether the drone body is in a fast-falling state, uses an infrared obstacle avoidance sensor to monitor whether there are obstacles at close range, and cooperates with an acceleration sensor to monitor whether the drone body is in a flying state to warn of a collision. When a central processing unit detects a collision warning, the central processing unit will conduct current to the second connecting wire to heat the resistance wire. After the resistance wire is heated, the guanidine nitrate in the reaction chamber will undergo an explosion reaction to produce a large amount of gas, thereby inflating an airbag, and the inflated airbag is used to wrap the drone body to prevent the drone body from being damaged or injuring people. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural diagram of a drone airbag protection device proposed for the invention; Figure 2 for Figure 1 A magnified image of point A; Figure 3 A schematic diagram of the structure of the second connecting pipe and airbag of a drone airbag protection device proposed for the invention; Figure 4 for Figure 3 A magnified view of point B; Figure 5A schematic diagram of the structure of the central processor and independent power supply of a drone airbag protection device proposed for the invention; Figure 6 The figure is a simplified structural diagram of an airbag storage box.

[0017] In the figure: 1. UAV body; 2. airbag device; 3. integration center; 4. airbag storage box; 401. storage compartment; 5. lower mounting block; 200. air pressure altitude sensor; 201. acceleration sensor; 202. infrared obstacle avoidance sensor; 203. central processing unit; 204. gas generator; 205. reaction chamber; 206. enclosure; 207. airbag; 208. independent power supply; 209. first connecting wire; 210. second connecting wire; 211. resistance wire; 212. first air outlet; 213. first connecting pipe; 214. second air outlet; 215. second connecting pipe; 6. annular groove; 7. closed membrane bag; 8. striker; 9. slider; 10. tension spring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the invention.

[0019] See also Figure 1-5 The invention provides a technical solution: a drone airbag protection device, including a drone body 1; in order to enable the protective airbag to be quickly opened, an integration center 3 is fixedly installed on the top of the drone body 1, a lower mounting block 5 is fixedly installed on the bottom of the drone body 1, and an airbag storage box 4 is fixedly installed on the integration center 3 and the lower mounting block 5, so that a corresponding airbag 207 is arranged in both the upper and lower directions of the drone body 1. In a specific implementation, the above-mentioned integration center 3 is provided with a safety airbag device 2 for installing and triggering the airbag, so that the airbag 207 is quickly opened by the safety airbag device 2, so as to protect the drone.

[0020] In practice, in order to realize the function of quickly opening the airbag, such as Figure 4 and Figure 5The airbag device 2 includes a protective plate 206, which is fixedly installed in the integrated center 3. A gas generator 204 is fixedly installed in the protective plate 206. An independent power supply 208 is fixedly installed in the integrated center 3. Airbags 207 are installed in the two airbag storage boxes 4. A reaction chamber 205 is opened in the gas generator 204. The reaction chamber 205 is filled with a combustion medium that can explode, such as guanidine nitrate. More specifically, a first air outlet 212 is opened at the top of the reaction chamber 205, and the first air outlet 212 is connected to the reaction chamber 205 to transport the gas generated after the explosion. During installation, a first connecting pipe 213 is fixedly installed in the first air outlet 212, and the airbag 207 close to the side of the integrated center 3 is fixedly connected to the first connecting pipe 213, and the airbag 207 is connected to the first connecting pipe 213. A second air outlet 214 is opened on one side of the reaction chamber 205, and a second connecting tube 215 is fixedly installed in the second air outlet 214. The other end of the second connecting tube 215 is installed in the lower mounting block 5. The airbag 207 close to one side of the lower mounting block 5 is fixedly connected to the other end of the second connecting tube 215, and the airbag 207 is communicated with the second connecting tube 215.

[0021] In addition, in this embodiment, Figure 5 An independent power supply 208 is fixedly installed in the integrated center 3, a central processing unit 203 is fixedly installed on one side of the independent power supply 208, a first connecting wire 209 is fixedly connected between the independent power supply 208 and the central processing unit 203, and the first connecting wire 209 is electrically connected to the second connecting wire 210. In a specific implementation, Figure 4 As shown, a heating element is fixedly connected between the two second connecting wires 210, for example, a resistance wire 211 is selected. The resistance wire 211 has high resistance and heats up quickly. The resistance wire 211 is installed in the reaction chamber 205, and can quickly heat the combustion medium in the reaction chamber 205 to its deflagration temperature, and instantly generate a large amount of gas, so as to open the airbag 207 in time.

[0022] In addition to the above components, several sensors are also key functional elements, one of which is the barometric altitude sensor 200. Figure 5, a barometric altitude sensor 200 and an acceleration sensor 201 can be fixedly installed in the integration center 3. The barometric altitude sensor 200 and the acceleration sensor 201 are both electrically connected to the central processing unit 203. The aforementioned infrared obstacle avoidance sensor 202 is fixedly installed on the drone body 1. This infrared obstacle avoidance sensor 202 is electrically connected to the central processing unit 203. When in use, the integration center 3 needs to be fixed above the drone body 1, and the lower mounting block 5 is fixed to the bottom of the drone body 1, and the compressed airbag 207 is fixed to the integration center 3 and the lower mounting block 5 through the airbag storage box 4. The specific airbag storage structure can be adaptively designed with reference to the prior art. Specifically in this embodiment, an airbag storage structure is introduced, such as Figure 6 As shown, the airbag storage box 4 includes a storage bin 401 for accommodating the compressed airbag 207. The storage bin 401 is cylindrical, and the side wall at the top opening thereof is provided with an annular groove 6. The annular groove 6 is a rectangular cross section. The edge of an inflated closed membrane sac 7 is tightly embedded in the annular groove 6, that is, the closed membrane sac 7 is embedded in the annular groove 6 due to inflation, so as to achieve the sealing of the storage bin 401 and the sealed storage of the airbag. At the same time, a vertical elastically installed striker 8 is specially installed vertically and slidably in the side wall below the annular groove 6. For example, the striker 8 is installed by a tension spring 10 to maintain the initial installation position that does not contact the closed membrane sac 7 under normal conditions. A slider 9 is fixed on one side of the bottom end of the striker 8. The slider 9 is installed vertically and slidably on the wall of the storage bin 401. The space of the storage bin 401 below the slider 9 is used to store the compressed airbag 207. When the airbag 207 pops up, it touches the slider 9, which then pushes the slider 9 upward, causing the striker 8 to move upward quickly, piercing the edge of the closed membrane bag 7. The closed membrane bag 7 then leaks air and is disconnected from the annular groove 6 due to contraction, so that the airbag 207 can pop out from the port of the storage bin 401 without hindrance.

[0023] As one of the specific implementation structures, such as Figure 5The power supply and the central processor 203 in the drone body 1 are separated and independent, and the central processor 203 is independently powered by an independent power supply 208, so that when the drone crashes due to a main power failure, the airbag 207 can still be triggered normally. More specifically, when the drone body 1 is flying, there are two types of protection warnings: the first is when the drone body 1 stalls and falls rapidly, the warning will be triggered, and the second is when the drone accelerates and the infrared obstacle avoidance sensor 202 detects an obstacle in the close distance, the warning will be triggered. Specifically in practical application, the first type of warning is to monitor the atmospheric pressure during flight at all times through the air pressure altitude sensor 200. Since there is a certain correlation between air pressure and altitude, the higher the altitude, the lower the air pressure. When the drone stalls and falls, the air pressure altitude sensor 200 can detect a drastic change in air pressure. The corresponding change in air pressure indicates that the altitude of the drone is suddenly dropping, and there is a risk of crashing. At the same time, in order to avoid false warnings due to the adjustment of the drone's own flight status, in this embodiment, it is also necessary to use the acceleration sensor 201 to assist in monitoring the acceleration of the drone and actively monitor whether the drone is accelerating. If the drone itself does not accelerate, that is, it is not performing flight operations such as diving, at this time, the central processor 203 will trigger a stall protection warning, thereby triggering the airbag 207 to pop out. The second type of warning is to monitor whether the drone body 1 is in an accelerated flight state through the acceleration sensor 201. The forward, backward and horizontal movement of the drone body 1 will be detected by the acceleration sensor 201. At the same time, the infrared obstacle avoidance sensor 202 uses the principle of infrared reflection to monitor whether there are obstacles within 3-30 cm of the integration center. When the acceleration sensor 201 detects that the drone body 1 is accelerating and the infrared obstacle avoidance sensor 202 detects an obstacle, the central processor 203 will trigger an acceleration collision warning, thereby triggering the airbag 207.

[0024] As one of the embodiments: the triggering principle of the airbag 207 is as follows. When the central processor 203 triggers the early warning, the central processor 203 will supply power to the second connecting wire 210. After the second connecting wire 210 is energized, the resistance wire 211 will heat up. The heat generated by the resistance wire 211 causes the guanidine nitrate in the reaction chamber 205 to burn. The combustion of guanidine nitrate will produce a large amount of gas to form an air explosion. The gas will pass through the first connecting tube 213 and the second connecting tube 215 connected by the first air outlet 212 and the second air outlet 214 within 100-300 milliseconds, and will be quickly sent into the two airbags 207, so that the airbags 207 will quickly inflate and pop out. After the airbags 207 are popped out and unfolded, they can wrap the drone body 1 to prevent the drone body 1 from being damaged by collision and can prevent the drone body 1 from colliding with people on the ground.

[0025] Although embodiments of the invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A drone airbag protection device, comprising an airbag (207) mounted on a drone body (1), characterized in that: It also includes a central processing unit (203), an acceleration sensor (201), an air pressure altitude sensor (200), an infrared obstacle avoidance sensor (202), a reaction chamber (205), and a heating element, wherein: The acceleration sensor (201) is used to detect the acceleration of the drone body (1) during flight; the barometric altitude sensor (200) is used to detect the atmospheric pressure at the flight altitude of the drone body (1); and the infrared obstacle avoidance sensor (202) is used to detect whether there are obstacles within a set distance range around the drone body (1) during flight; the reaction chamber (205) contains a combustion medium capable of deflagration and generating gas, and when the data detected by the sensor meets any of the following conditions, the heating element generates heat and ignites the combustion medium, and the gas generated by the combustion medium is input into the airbag (207) through a connecting pipe, causing it to expand and pop out: Case 1: the air pressure altitude sensor (200) detects that the air pressure change exceeds a set value, and the acceleration sensor (201) detects that the drone body (1) itself is not accelerating; Case 2: The acceleration sensor (201) detects that the drone body (1) is in an accelerating state, and the infrared obstacle avoidance sensor (202) detects an obstacle.

2. The drone airbag protection device according to claim 1, characterized in that: An integration center (3) is fixedly mounted above the drone body (1), a lower mounting block (5) is fixedly mounted at the bottom of the drone body (1), an airbag storage box (4) is fixedly mounted on both the integration center (3) and the lower mounting block (5), and the airbag storage box (4) has the airbag (207) mounted inside it; An airbag device (2) is provided in the integration center (3), the airbag device (2) comprising a protective plate (206), the protective plate (206) being fixedly installed in the integration center (3), a gas generator (204) being fixedly installed in the area enclosed by the protective plate (206), and the reaction chamber (205) being provided in the gas generator (204).

3. The drone airbag protection device according to claim 2, characterized in that: An independent power supply (208) is fixedly installed in the integration center (3), a central processing unit (203) is fixedly installed on one side of the independent power supply (208), and the independent power supply (208) supplies power to the central processing unit (203) and the heating element via connecting wires.

4. The drone airbag protection device according to claim 2, characterized in that: The connecting pipe comprises a first connecting pipe (213) and a second connecting pipe (215) respectively connecting the upper and lower air bags (207); The reaction chamber (205) is provided with a first air outlet (212) and a second air outlet (214) which are in communication therewith; a first connecting tube (213) is fixedly installed in the first air outlet (212); and a second connecting tube (215) is fixedly installed in the second air outlet (214).

5. The drone airbag protection device according to claim 4, characterized in that: The airbag (207) on the side close to the integration center (3) is fixedly connected to the first connecting pipe (213) and communicates with each other; the airbag (207) on the side close to the lower mounting block (5) is fixedly connected to the second connecting pipe (215) and communicates with each other.

6. The drone airbag protection device according to claim 2, characterized in that: The air pressure altitude sensor (200) and the acceleration sensor (201) are fixedly installed in the integration center (3); the air pressure altitude sensor (200) and the acceleration sensor (201) are both electrically connected to the central processing unit (203).

7. The drone airbag protection device according to claim 2, characterized in that: After the airbag (207) is fully ejected from the airbag storage box (4), the entire drone is covered from both the upper and lower directions, and the ends of the two airbags (207) facing each other are concave to completely accommodate the drone body (1) without contact, and the edges of the ends of the two airbags (207) that are connected to each other are squeezed and sealed against each other.

8. The drone airbag protection device according to claim 1, characterized in that: The heating element is a resistance wire (211), and the combustion medium is guanidine nitrate.

9. The drone airbag protection device according to claim 1, characterized in that: The infrared obstacle avoidance sensor (202) is fixedly mounted on the drone body (1), and the infrared obstacle avoidance sensor (202) is electrically connected to the central processing unit (203).

10. The drone airbag protection device according to claim 2, characterized in that: The airbag storage box (4) includes a storage bin (401) for accommodating a compressed airbag (207). The side wall of the storage bin (401) at the top opening is provided with an annular groove (6). The edge portion of an inflated closed membrane bag (7) is tightly embedded in the annular groove (6). A striker (8) is vertically slidably installed in the side wall below the annular groove (6). A slider (9) is fixed to one side of the bottom end of the striker (8). The slider (9) is vertically slidably installed on the bin wall of the storage bin (401). The compressed airbag (207) is stored in the space of the storage bin (401) below the slider (9). When the airbag (207) pops up, the slider (9) is pushed upward so that the striker (8) pierces the closed membrane bag (7). The closed membrane bag (7) is disconnected from the annular groove (6) due to contraction.

Images