A reactive photoelectric protection device

Abstract

This utility model discloses a reactive optoelectronic protection device, including a body that is detachably fixed to the side or top of the object being protected for protection against side or top intrusion targets. The body houses a computing unit and a battery unit, with a detection unit and an interception and launch unit mounted on the body. The detection unit consists of a millimeter-wave detection component and / or an optical detection component. The interception and launch unit consists of at least one launch component. The battery unit provides power to the computing unit, detection unit, and interception and launch unit. By employing active detection, the protected object can actively react to drone attacks, preventing secondary damage from explosions.

Description

Technical Field

[0001] This utility model belongs to the field of low-altitude aircraft detection technology, and specifically relates to a reactive photoelectric protection device. Background Technology

[0002] Protecting drones from vehicles or armored vehicles is a challenge. Due to the low, slow, and small size of drones, conventional detection methods, while capable of detecting them at long distances, are often masked by ground background signals when drones intrude at low altitudes. There are no effective means of interception, and even if they can be intercepted, the cost-effectiveness is too high. In addition, although reactive armor can be installed on moving vehicles, it is ineffective against conventional munitions carried by drones.

[0003] Patent application 202410891824.6 discloses a technical solution that uses an optical unit for detection and then guides a shotgun for interception. Another patent application, 202510490253.X, discloses a technical solution that uses a high-speed optical detection unit for high-speed detection of multiple drones and then guides these drones for interception. While these technical solutions are feasible, the corresponding systems are bulky and require modifications to the system installation on the protected object or vehicle, which takes a long time and cannot be quickly set up.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a reactive photoelectric protection device, thereby overcoming the defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides a reactive photoelectric protection device, including a body that is detachably fixed to the side or top of the object being protected for protection against side or top intrusion targets; the body contains a computing unit and a power supply unit, and a detection unit and an interception and emission unit are mounted on the body. The detection unit consists of millimeter-wave detection components and / or optical detection components; The interception launch unit consists of at least one launch component, which is one or more combinations of an interception net launch component, an interception airbag component, and a shotgun launcher. The power supply unit provides power to the computing unit, detection unit, and interception and transmission unit; The optical detection components are visible light detection cameras, infrared light detection cameras, or optical quad detectors, while the millimeter-wave detection components operate in the frequency band of 1GHz-30GHz or above 30GHz.

[0007] The field of view of the detection unit is α, and the corresponding detection area is Ω. The coverage area of ​​each transmitting component is greater than Ω / n, where n is the number of transmitting components and n≥3.

[0008] With this configuration, the detection unit is located at the center of the device, and the transmitting components are located around the transmitting components, so that at least 3 transmitting units constitute the coverage of the detection area Ω.

[0009] Preferably, in the above technical solution, when the detection unit is an optical four-element detector, n=4.

[0010] Preferably, in the above technical solution, the detection unit is an optical detection component, and its frame rate N satisfies: R=L+t1×V1, L=t2×V2, T=t1-t2, N≥2×(1 / T), where R is the radius of the protection circle, L is the safe distance, V1 is the flight speed of the intruding target, V2 is the flight speed of the interceptor, T is the response time of the computing unit from detection to triggering the interception launch, t1 is the running time from the target entering the protection circle R to being intercepted L, and t2 is the running time of the interceptor reaching the safe distance L. Combining the method for determining the target distance by the optical detection component described above, the frame rate N that meets the response speed requirement is calculated by obtaining the target imaging pixels and corresponding time parameters at different distances (such as key distance points like L and R).

[0011] Preferably, in the above technical solution, the detection unit is a microwave detection component, and its frame rate N satisfies: R=L+t1×V1, L=t2×V2, T<t1-t2, N≥2×(1 / T), Where R is the radius of the protective circle, L is the safe distance (the specific value is determined according to the type of interceptor launcher), V1 is the flight speed of the intruding target, V2 is the flight speed of the interceptor launcher, T is the response time of the computing unit from detecting the intrusion to triggering the intercept launch, t1 is the running time from the target entering the protective circle R to being intercepted L, and t2 is the running time of the interceptor reaching the safe distance L.

[0012] Preferably, in the above technical solution, the detection unit is located near the center of the body, and the launching components of the interception launching unit are evenly distributed around the detection unit.

[0013] Preferably, in the above technical solution, the launching component is an interceptor net launching component, which includes a launcher, at least four projectiles, a launch cavity, a mesh receiving slot, a tether, and a gas source; the gas source is a gas generating unit or a compressed gas tank, which generates high-pressure gas through an ignition unit to propel the projectiles, and the projectiles are pulled by the tether to fly towards the target through the mesh; the safe distance L ≥ 10 meters, and the interception is achieved by wrapping or entanglement with the target propulsion device.

[0014] Preferably, in the above technical solution, the ignition unit includes a high-speed solenoid valve, an electric detonator, or a blank cartridge; the electric detonator ignites the ignition propellant through a resistance wire to trigger the gas generating unit; the blank cartridge ignites the propellant inside the cartridge through an electric trigger to generate gas.

[0015] Preferably, in the above technical solution, the launching component is an interception airbag component, which includes an airbag, a gas generating unit, and an ignition unit. After the ignition unit is triggered, it generates high-pressure gas to inflate and deploy the airbag. The safe distance L ≥ 300mm, and the airbag intercepts the target through a soft impact. A release device is provided between the airbag and the launching component, and the airbag releases after a delay of 10-50 seconds after deployment. Combined with the precise target distance detection by the optical detection component mentioned above, the airbag is triggered to inflate and deploy for interception when the target reaches the corresponding safe distance L.

[0016] Preferably, in the above technical solution, the launching component is a shotgun launching component, which includes a launching tube, shotgun ammunition, an automatic charging mechanism, and an ignition unit. When the target approaches a safe distance L = 10-50 meters, the ignition unit triggers the firing of the ammunition to achieve interception. Based on the target distance information fed back by the optical detection component mentioned above, when the target enters the set safe distance range of L (10-50 meters), shotgun firing interception is initiated.

[0017] Preferably, in the above technical solution, the microwave detection component operates in the millimeter wave band above 30 GHz, with a protection radius R ≤ 500 meters. It can be used in conjunction with an optical detection component. The millimeter wave detection component performs wide-range, rapid initial detection, while the optical detection component performs precise distance determination based on imaging and the pixel-distance relationship in claim 1, jointly ensuring detection and protection against intruding targets.

[0018] A method for determining the target distance using the aforementioned protective device includes: an optical detection component using the principle of optical imaging, combined with the lens focal length f and the target width D, to determine the target distance by pre-storing a relationship curve between target imaging pixels and distance. Specifically, when the target is located at the protection radius R, the number of target pixels - 1 = D*(f / R); when the target is located at the safety distance L, the number of target pixels - 2 = D*(f / L), and the target distance is estimated based on this relationship curve using the detected pixel values.

[0019] Preferably, the above technical solution includes: ①Pre-store the relationship curve between the imaging pixels of the intrusive target and the distance; The target model library includes rotary-wing UAVs, fixed-wing UAVs, and the projected width D of the external dimensions in the direction perpendicular to the optical axis, where R is the radius of the protective ring, L is the safety distance, and the focal length f of the lens for optical detection. When the target is located at the R protection radius, the number of pixels corresponding to the target - 1 = D*(f / R); When the target is at a safe distance of L, the number of pixels corresponding to the target is -2 = D*(f / L); Construct the target distance curve: ② Estimate the target distance using pixel values ​​based on the target pixel distance relationship curve.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. Improve the protection level of buildings, vehicle platforms, or armored platforms against small drone attacks; 2. By adopting an active detection method, the protected object can take proactive measures against drone attacks to prevent secondary damage from explosions. 3. When using millimeter wave detection, it can prevent false alarms or malfunctions caused by rain, fog, and soil contamination; 4. The interception and launch units all adopt existing technologies, which have the characteristics of low cost; 5. Multiple protective units arranged in a way that form a seamless protective device can enable the protected target to avoid at least one attack. Attached Figure Description

[0021] Figure 1 and Figure 2 This is a schematic diagram of the protective device; Figure 3 This is a schematic diagram illustrating the detection and interception principles. Figure 4 This is a schematic diagram of the field of view of the detection unit; Figure 5 , Figure 6 , Figure 7 These are structural diagrams of a high-speed solenoid valve, an electric detonator, and a blank cartridge. Figure 8 This is a schematic diagram of the airbag assembly. Figure 9 A schematic diagram showing the target's location within the protection radius; Figure 10 This is a diagram showing the target at a safe distance. Figure 11 The curve showing the relationship between target imaging pixels and distance. Detailed Implementation

[0022] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0023] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0024] The specific components of this protective device are: It includes a detection unit, a computing unit, a power supply unit, and an interception and transmission unit. The detection unit consists of at least one detection component. The processing unit receives signals from the detection unit and controls the interception and transmission unit to operate. The interceptor-launch unit consists of at least one launch component, while the detection unit, computing unit, battery unit, and interceptor-launch unit are mounted on the fuselage. The power supply unit provides operating power to other units. The unit can be suspended on the side of the protected object to protect against side intrusions or placed on top of the protected object to protect against top intrusions.

[0025] The detection unit consists of an optical detection component and / or a microwave detection component. The optical detection component is a visible light or infrared light detection camera or an optical quad detector. The microwave detection component is a detection component that operates in the frequency band between 1 GHz and 30 GHz or above 30 GHz.

[0026] The frame rate of the visible light or infrared light detection camera or the optical quad detector is greater than or equal to N. This setting ensures that after the target enters the protection circle (the radius of the protection circle is R), the intercepting unit completes the launch within time T and maintains a safe distance L from the intruding target.

[0027] The interception launch unit consists of at least one launch component distributed near the detection unit. The launch component includes an interception net launch component, an interception airbag component, or a shotgun launcher, or a combination of two or more of the above launch components.

[0028] The detection unit is located near the center of the aircraft, and the transmission components of the interception transmission unit are distributed around the detection unit.

[0029] The intrusion target's flight speed is V1, the interceptor's flight speed is V2, the time T required for the processing unit to travel from the current intrusion protection radius to triggering the interceptor's launch, the safety distance is L, and the protection radius is R. If a camera component is used for detection, the frame rate N satisfies: R = L + t1 * V1 (the time t1 is the time from when the target enters the protection zone R to when it is intercepted L), L = t2 * V2 (the time t2 is the time of the interceptor and the distance L), T = t1 - t2, N ≧ 2 * (1 / T). If a microwave detection component is used, T must be less than t1 - t2.

[0030] The field of view of the detection unit is α, corresponding to a detection range area of ​​Ω. The area covered by each interceptor-emission component is greater than Ω / n, where n is the number of emission components, preferably greater than or equal to 4, thus achieving full coverage of the detection range area. When the detection unit is a four-element detector, n=4.

[0031] The interceptor launch assembly is a component with a launching mesh, including a launcher, at least four projectiles mounted on the launcher and corresponding launch chambers, a mesh containing a receiving slot connected to the projectiles, and a gas source. The gas source is located at the rear of the launcher and communicates with the launch chambers. The gas source includes a gas generating unit or a compressed gas tank and an ignition unit. When the detection unit detects an intruding target, it obtains the intrusion area and controls the launch assembly in the corresponding area to launch. When the launch assembly is working, the ignition unit's working resistance wire ignites the propellant, generating high heat, which then heats and ignites the gas generating unit to produce a large amount of high-pressure gas, or the ignition unit quickly opens the compressed gas tank. This high-pressure gas enters the launch chamber through the gas duct, propelling the projectiles away. The projectiles, connected by a tether, pull the mesh open its slot cover and fly towards the intruding target. The safe distance L is greater than or equal to 10 meters. The mesh flies towards the intruding target, enveloping it or wrapping around its thrusters, causing the target to fall.

[0032] The ignition unit includes a high-speed solenoid valve, an electric detonator, and a blank cartridge.

[0033] The high-speed solenoid valve opens quickly to release gas.

[0034] The electric detonator includes a resistance wire and an ignition charge, and the gas generating unit is sodium azide or other compounds that can generate a large amount of gas (e.g., guanidine nitrate + metal oxide).

[0035] The blank cartridge is fired by an electric trigger located at its bottom, which ignites the gunpowder inside the cartridge and produces a large amount of gas.

[0036] The interceptor airbag assembly includes an airbag, a gas generating unit, and an ignition unit. When the launch assembly is operational, the ignition unit ignites the gas generating unit, producing a large amount of high-pressure gas, which inflates the airbag, causing it to deploy rapidly and intercept the intruding target. The safe distance L is greater than or equal to 300mm. The airbag faces the intruding target, using its blocking and impact to cause the target to fall. Simultaneously, the airbag's relatively soft nature prevents the target from exploding upon impact during interception.

[0037] A release device is also provided between the airbag and the launch assembly. After the airbag is deployed, the release device will activate after a delay of 10-50 seconds, throwing the airbag away from the launch assembly.

[0038] The shotgun firing assembly includes a firing tube, shotgun ammunition, an automatic charging mechanism, and an ignition unit. When the detection unit detects an intruding target and the target approaches a safe distance L (preferably L=10-50 meters), it controls the firing assembly to operate, the ignition unit to ignite, or controls the firing tubes in the corresponding area to fire ammunition, or controls all firing tubes to fire ammunition, thereby achieving the destruction and interception of the intruding target.

[0039] The protective device is installed on the outside of the area that the object to be protected needs to be protected.

[0040] The microwave detection component is preferably operated in the millimeter-wave frequency band above 30GHz, thus achieving target detection within a protection radius of R=500 meters.

[0041] When the optical detection unit is an optical detection component, the method for determining the distance to the intrusion target after pre-setting the optical detection component and the control unit is as follows: The optical detection component utilizes the principle of optical imaging, combined with the lens focal length f and the target width D, and constructs a curve showing the relationship between target imaging pixels and distance through pre-stored curves (as shown in Figures 9 and 10, including imaging at the radius R of the protective circle corresponding to the number of pixels - 1, and imaging at the safe distance L corresponding to the number of pixels - 2), as shown in Figure 9. Figure 11 The method enables the determination of target distance as follows: when the target is located at the protection radius R, the number of pixels corresponding to the target is -1 = D*(f / R); when the target is located at the safety distance L, the number of pixels corresponding to the target is -2 = D*(f / L). Based on this relationship curve, the target distance is estimated by the detected pixel values.

[0042] The specific detection steps are as follows: ①Pre-store the relationship curve between the imaging pixels of the intrusive target and the distance; The target model library includes rotary-wing UAVs, fixed-wing UAVs, and the projected width D of the external dimensions in the direction perpendicular to the optical axis, where R is the radius of the protection circle, L is the safety distance, and the focal length f of the optical detection lens; when the target is located at the protection radius R, the number of pixels corresponding to the target is -1 = D*(f / R), and when the target is located at the safety distance L, the number of pixels corresponding to the target is -2 = D*(f / L). Constructing a target distance curve: Based on the feature matching model library curve of the detected target, the target distance is estimated through pixel values. That is, after the target imaging pixels are detected, the pre-stored pixel-distance relationship curve is matched to calculate the actual distance between the target and the protection device, providing a basis for subsequent interception decisions (such as judging whether to trigger interception based on parameters such as frame rate and response time, combined with distance information).

[0043] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A reactive photovoltaic protection device comprising a body which is removably fixed to the side or top of an object to be protected for protection against side or top intruding objects; characterized in that, The machine body contains a computing unit and a power supply unit, while the detection unit and the interception and launch unit are mounted on the machine body. The detection unit consists of a millimeter-wave detection component and / or an optical detection component; The interception launch unit consists of at least one launch component, which is one or more combinations of an interception net launch component, an interception airbag component, and a shotgun launcher. The power supply unit provides power to the computing unit, the detection unit, and the interception and transmission unit. The optical detection component is a visible light detection camera, an infrared light detection camera, or an optical quad detector, and the millimeter-wave detection component operates in the frequency band of 1GHz-30GHz or above 30GHz. The field of view of the detection unit is α, the corresponding detection area is Ω, and the coverage area of ​​each transmitting component is greater than Ω / n, where n is the number of transmitting components and n≥3.

2. The reactive photoelectric protection device according to claim 1, characterized in that, When the detection unit is an optical four-phase detector, n=4.

3. The reactive photoelectric protection device according to claim 1, characterized in that, The detection unit is an optical detection component, and its frame rate N satisfies: R=L+t1×V1, L=t2×V2, T=t1-t2, N≥2×(1 / T), where R is the radius of the protection circle, L is the safe distance, V1 is the flight speed of the intruding target, V2 is the flight speed of the interceptor, T is the response time of the computing unit from detection to triggering the interception launch, t1 is the running time from the target entering the protection circle R to being intercepted L, and t2 is the running time of the interceptor reaching the safe distance L.

4. The reactive photoelectric protection device according to claim 1, characterized in that, The detection unit is a microwave detection component, and its frame rate N satisfies: R=L+t1×V1, L=t2×V2, T<t1-t2, N≥2×(1 / T), Where R is the radius of the protective circle, L is the safe distance (the specific value is determined according to the type of interceptor launcher), V1 is the flight speed of the intruding target, V2 is the flight speed of the interceptor launcher, T is the response time of the computing unit from detecting the intrusion to triggering the intercept launch, t1 is the running time from the target entering the protective circle R to being intercepted L, and t2 is the running time of the interceptor reaching the safe distance L.

5. The reactive photovoltaic shield of claim 1, wherein, The detection unit is located near the center of the aircraft, and the launch components of the interception launch unit are evenly distributed around the detection unit.

6. The reactive photovoltaic shield of claim 1 or 4, wherein, The launching assembly is an interceptor net launching assembly, which includes a launcher, at least four projectiles, a launch cavity, a mesh receiving slot, a tether, and a gas source. The gas source is a gas generating unit or a compressed gas tank, which generates high-pressure gas through an ignition unit to propel the projectiles. The projectiles are pulled by the tether to the mesh and fly toward the target. The safe distance L is ≥ 10 meters, and the interception is achieved by wrapping or entanglement with the target's propulsion device.

7. The reactive photovoltaic shield of claim 6, wherein, The ignition unit includes a high-speed solenoid valve, an electric detonator, or a blank cartridge; the electric detonator ignites the ignition propellant through a resistance wire to trigger the gas generating unit; the blank cartridge ignites the propellant inside the cartridge through an electric trigger to generate gas.

8. The reactive photovoltaic shield of claim 1 or 4, wherein, The launching component is an interception airbag component, which includes an airbag, a gas generating unit, and an ignition unit. After the ignition unit is triggered, it generates high-pressure gas to inflate the airbag and launch it. The safe distance L≥300mm is used to intercept the target through the soft impact of the airbag. A release device is provided between the airbag and the launching component. After the airbag is launched, it releases and is thrown away after a delay of 10-50 seconds.

9. The reactive photovoltaic shield of claim 1 or 4, wherein, The launching assembly is a shotgun launching assembly, which includes a launching tube, shotgun ammunition, an automatic charging mechanism, and an ignition unit; when the target approaches a safe distance L=10-50 meters, the ignition unit triggers the launching of the ammunition to achieve destruction and interception.

10. The reactive photoelectric protection device according to claim 1, characterized in that, The millimeter-wave detection component operates in the millimeter-wave frequency band above 5 GHz, and has a protection radius R ≤ 500 meters.

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