Vehicle stopping system, unmanned aerial vehicle and vehicle stopping method

Abstract

The invention provides a vehicle stopping system, an unmanned aerial vehicle and a vehicle stopping method, and belongs to the field of law enforcement vehicle stopping. The vehicle stopping system comprises a target identification unit used for identifying a target vehicle; a set liquid is accommodated in the ejector; the control unit is used for controlling the ejector to eject set liquid to the windshield of the target vehicle in response to the starting instruction, and the set liquid is viscous liquid and forms an opaque layer after making contact with the windshield. According to the vehicle stopping system, the viscous liquid is sprayed to the windshield of the target vehicle, so that the sight of a driver is partially stopped, the vehicle is effectively stopped from moving, the safety of law enforcement officers and vehicle passengers is ensured, and meanwhile potential damage to properties and the environment is reduced.

Description

Technical Field

[0001] The present invention relates to the field of vehicle blocking by law enforcement, and in particular to a vehicle blocking system, a drone and a vehicle blocking method. Background Art

[0002] In the actual vehicle stopping process initiated by the controlling end, the driver of the controlled end needs to be prevented from driving the vehicle. Existing vehicle stopping methods, such as spike strips or physical barriers, can be dangerous and not effective in all situations. Therefore, a safer and more reliable method is needed to stop the vehicle in a controlled manner. Summary of the invention

[0003] The object of the present invention is to provide a vehicle blocking system, a drone and a vehicle blocking method, thereby providing a safer and controlled method to stop a moving vehicle.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a vehicle blocking system, which is applied to vehicles, fixed facilities or unmanned aerial vehicles. The vehicle blocking system includes: a target recognition unit, which is used to identify a target vehicle; an injector, in which a set liquid is contained; and a control unit, which is used to control the injector to spray the set liquid onto the windshield of the target vehicle in response to a start instruction, wherein the set liquid is a viscous liquid, which forms a shielding layer after contacting the windshield, and the transparency of the shielding layer is less than a first set threshold and greater than a second set threshold, and the first set threshold is greater than the second set threshold.

[0005] Optionally, the transparency of the set liquid decreases after contacting the windshield until the shielding layer is formed within the set time, wherein the set time is 5-10s.

[0006] Optionally, the transparency DT of the setting liquid satisfies the following formula:

[0007]

[0008] Wherein, t is the time after the set liquid contacts the windshield, T 0 is the set time, a is the first transparency coefficient of the set liquid, and b is the second transparency coefficient of the set liquid, which is between the second set threshold and the first set threshold.

[0009] Optionally, the target recognition unit is further used to: identify the distance to the target vehicle; and issue the start instruction when the target vehicle is within a set distance, wherein the set distance is 0.5-20m.

[0010] Optionally, the ejector further comprises a propulsion device for ejecting the set liquid at a set pressure, wherein the propulsion device is pneumatic, spring-driven or electric.

[0011] Optionally, the viscosity of the setting liquid is 1000-10000 cP, the color of the shielding layer formed by the setting liquid is black, gold, silver, red, yellow or blue, the saturation of the color is 60%-100%, and the setting liquid is non-flammable and non-toxic.

[0012] Optionally, the vehicle blocking system further comprises a trigger for issuing the start instruction when triggered.

[0013] Optionally, the sprayer is a gun-shaped device, including a gripper, a sight, a fluid reservoir, a nozzle, and a safety lock, wherein the trigger is a trigger of the sprayer.

[0014] Optionally, the vehicle blocking system is installed on a vehicle, a fixed facility or a drone.

[0015] On the other hand, the present invention further provides a drone, comprising the vehicle blocking system described above; a colored egg ball for containing a set liquid; and a throwing device for throwing the colored egg ball.

[0016] On the other hand, the present invention also provides a vehicle blocking method, which is applied to vehicles, fixed facilities or drones, and the vehicle blocking method includes: identifying a target vehicle; and in response to a start command, spraying a set liquid onto the windshield of the target vehicle, wherein the set liquid is a viscous liquid, which forms a blocking layer within a set time after contacting the windshield, and the transparency of the blocking layer is less than a first set threshold and greater than a second set threshold, and the first set threshold is greater than the second set threshold.

[0017] Through the above technical solution, the beneficial effect of the present invention is that a windshield blocking and vehicle stopping device is provided, which can provide a non-lethal and effective tool for the operator at the control end. By spraying the viscous liquid onto the windshield of the target vehicle, the driver's line of sight is partially blocked, and the movement of the vehicle is effectively stopped, thereby ensuring the safety of the operator at the control end and the vehicle occupants, while reducing potential damage to property and the environment.

[0018] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings:

[0020] Figure 1 is a structural schematic diagram of a vehicle blocking system provided according to an embodiment of the present invention;

[0021] Figure 2 is a schematic structural diagram of a portable sprayer provided according to an embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of the structure of an ejector provided according to an embodiment of the present invention;

[0023] Figure 4 is a schematic diagram of the structure of a drone provided according to an embodiment of the present invention;

[0024] Figure 5 It is a flowchart of a vehicle blocking method provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0026] The present invention first provides a vehicle blocking system 100, which can be applied to vehicles, fixed facilities or drones. Figure 1 As shown, the vehicle blocking system 100 may include: a target recognition unit 110 , an injector 120 , and a control unit 130 .

[0027] The target recognition unit 110 can be used to identify the target vehicle, and the injector 120 contains a set liquid. The control unit 130 can be used to control the injector 120 to spray the set liquid onto the windshield of the target vehicle in response to the start command. The set liquid is a viscous liquid that forms an opaque layer after contacting the windshield. In other words, the liquid formula of the set liquid enables it to adhere to the glass surface, dry quickly and form a non-completely transparent barrier to prevent the driver from maintaining a clear field of vision, thereby achieving safe and effective prevention of the driver of the controlled end from driving the vehicle by blocking the windshield.

[0028] In one embodiment, the liquid is set to form a shielding layer within a set time after contacting the windshield, wherein the transparency of the shielding layer is less than a first set threshold and greater than a second set threshold, and the first set threshold is greater than the second set threshold. This is set because the applicant has found that in the actual process of blocking the car, considering road safety, the transparency of the windshield should not be completely adjusted to a very low level, otherwise it will cause the driver's vision to be completely blocked, causing a driving accident, so the transparency of the shielding layer formed should be greater than a certain threshold (the first set threshold), such as 20-30%. In addition, the transparency of the windshield cannot be too high, otherwise it will lead to the loss of the shielding effect, so the transparency of the shielding layer formed should be less than a certain threshold (the second set threshold), such as 40-50%.

[0029] The calculation of transparency mainly depends on the transparency value DT and the RGB (red-green-blue) value of the color. Usually, the transparency value is divided into 256 levels, from 0 (completely transparent) to 255 (completely opaque). In addition, the transparency can also be expressed as a percentage, that is, 100% is completely transparent and 0% is completely opaque. For example, for 50% transparency, you can directly add half of the RGB values ​​of the upper and lower layers of color.

[0030] In one embodiment, the transparency of the liquid is set to decrease after contacting the windshield until a shielding layer is formed within a set time. The set time may be 5-10 seconds. This setting can better prevent the liquid from being wiped off by the wipers; on the other hand, it can give the driver an advance warning, so that the driver can gradually slow down when the vision is still clear, avoiding the sudden blocking of the windshield, which may cause panic and traffic accidents.

[0031] Specifically, the transparency of the shielding layer will decrease within a set time due to the evaporation of water therein, so the water content of the set liquid should be set within a set range. Among them, the water evaporation rate refers to the mass of water vapor evaporated per unit area per unit time. The inventors have found that the main factors affecting the water evaporation rate include: temperature, liquid surface area, air flow, air humidity, saturation difference, etc. Among them, the higher the temperature, the faster the evaporation, so in a high temperature environment, the movement of water molecules intensifies and it is easier to escape from the surface of the liquid. As the liquid surface area increases, the evaporation rate increases, so a larger surface area provides more opportunities for water molecules to escape. Air flow can accelerate evaporation, because wind energy can form turbulence, allowing water vapor to quickly diffuse into the surrounding space and reduce the water vapor pressure on the evaporation surface. In addition, the lower the air humidity, the faster the evaporation, so the higher the water content in the air, the slower the evaporation rate. The saturation difference refers to the difference between the water vapor content in the air and the saturated water vapor content. As the saturation difference increases, the drier the air, the faster the evaporation rate. For example, using a humidifier in a dry environment can slow down the evaporation rate, and in the case of rapid drying, evaporation can be accelerated by increasing air flow.

[0032] The method of measuring the evaporation rate of water can be carried out through experiments, such as measuring the contact area between air and water, the relative speed between air and water, the ambient temperature and the water temperature in a closed system, and then calculating the evaporation rate. In practical applications, the above process can be simplified. For example, the transparency DT of the set liquid can be calculated by the following formula:

[0033]

[0034] Where t is the time after the liquid contacts the windshield, T 0 is the setting time, a is the first transparency coefficient of the setting liquid, and b is the second transparency coefficient of the setting liquid, which is between the second setting threshold and the first setting threshold.

[0035] In one embodiment, the liquid is set to be highly viscous so that it can adhere to the glass surface and cannot be wiped off even if the driver turns on the wipers. However, it cannot be too viscous, and at least it must be able to be stored normally in the injector 120 and ejected when needed. For example, the viscosity of the liquid is set to 1000-10000 cP, which can be achieved by using specially formulated oil or paint. The liquid formula can also be adjusted so that the viscous liquid should dry quickly after being ejected, improving its opacity and wind and rain resistance, thereby avoiding flowing onto the hood or being wiped off by the wipers.

[0036] In one embodiment, in order to achieve a better shielding effect, the color of the shielding layer formed by the liquid can be set to black, gold or silver, which can be achieved by mixing paint with carbon powder, gold powder or silver powder. In order to achieve a better warning effect, the color of the opaque layer can be set to bright colors such as red, yellow, blue, etc., and its saturation can be set to 60%-100%.

[0037] In addition, in order to minimize the risk to bystanders and occupants of the target vehicle, the liquid should be non-flammable and non-toxic. In other words, the viscous liquid is a proprietary mixture of polymers and non-toxic and environmentally friendly substances, which is non-toxic, non-flammable and environmentally friendly, so as not to pose additional risks to drivers, passengers or passers-by after the vehicle stops. In addition, in order to more conveniently remove this viscous liquid attached to the glass or body, a corresponding special cleaning agent can also be prepared at the same time when the above liquid is configured, so as to facilitate the subsequent cleaning of the scene.

[0038] The vehicle blocking system 100 can be installed, for example, installed on a control end vehicle, a fixed facility or a drone, or can be configured to be portable and held by an operator at the control end.

[0039] When the vehicle blocking system 100 is installed, the vehicle blocking system 100 can automatically identify the target and issue a start command through the target recognition unit 110. Specifically, the target recognition unit 110 can also be used to perform the following functions:

[0040] 1) Identify the distance to the target vehicle; and

[0041] 2) When the target vehicle is within a set distance, a start command is issued. For example, the set distance may be 0.5-20 m, preferably 3-10 m.

[0042] In this case, the vehicle blocking system 100 may include a liquid reservoir, a pump, and a delivery pipe. The liquid reservoir contains a sufficient amount of viscous liquid. The pump is connected to the reservoir and is used to push the fluid so that the viscous liquid can be delivered under pressure. The control unit 130 is connected to the pump and is programmed to activate the pump when receiving a start command from an operator at the control end or an automatic system. The delivery pipe is connected to the pump and can adjust its position according to the target vehicle so that the viscous liquid is sprayed onto the windshield of the target vehicle when the start command is received.

[0043] The control unit 130 can also receive a start command remotely or on-site, so that it can be remotely operated and executed on the drone. In this way, the vehicle blocking system 100 of the present invention is intended to be deployed remotely or on-site by an operator at the control end to safely and efficiently control the driver at the controlled end without causing harm to the public or the driver.

[0044] In another embodiment, the vehicle blocking system 100 can be configured to be portable and held by an operator at the control site. The operator will aim the injector 120 at the windshield of the target vehicle, issue a start command to release the viscous liquid and project it onto the windshield, thereby forming a visual obstruction. The driver cannot fully see through the windshield, forcing him to slow down and eventually stop.

[0045] Specifically, the vehicle blocking system 100 may further include a trigger 140, which is used to issue a start instruction when triggered, such as releasing the viscous liquid by pressing. Figure 2 As shown, the sprayer 120 can be configured as a gun-shaped device, and the gun-shaped body design should be ergonomic, easy to operate and aim, and can be made of durable materials to withstand field use. In this case, the sprayer 120 can include a trigger 121, a gripper 122, a sight 123, a liquid reservoir 124, and a nozzle 125. In this case, the trigger 140 is the trigger 121 of the sprayer 120.

[0046] The holder 122 and the aiming device 123 can facilitate the on-site personnel to hold and aim. The liquid reservoir 124 can be used to store the viscous liquid and conveniently refill the viscous liquid repeatedly. For example, the liquid reservoir 124 can be made of a durable, leak-proof material so that it can withstand high pressure. The nozzle 125 is precisely designed so that the liquid can be accurately sprayed onto the windshield of the vehicle to form a shielding layer, preventing the driver from seeing through the windshield, thereby forcing the vehicle to stop.

[0047] In addition, the car arresting system 100 can be equipped with safety features to prevent accidental release of viscous liquids. For example, the sprayer 120 can also include a safety lock 126, and the sprayer 120 can only be activated when the safety lock 126 is released and the trigger 140 (ie, the trigger 121) is pressed.

[0048] In one embodiment, the ejector 120 may further include a propulsion device 127 for ejecting a set liquid at a set pressure, so that the viscous liquid can be projected onto the windshield of a moving vehicle at a longer distance (at least within the set distance). The propulsion device 127 may be pneumatic, spring-driven, or electric. Figure 3 As shown, the propulsion device 127 can be implemented by high-pressure pneumatic means, in which case the ejector 120 can also include a high-pressure gas cylinder 128. Alternatively, a mechanical structure with a spring-loaded mechanism can be used as the propulsion device 127, or an electric structure with a motor pump as a power source can be used as the propulsion device 127, so that the viscous liquid can be projected onto the windshield of a moving vehicle at a sufficient speed to form a shielding layer.

[0049] In summary, the vehicle blocking system 100 provided by the present invention is a windshield blocking and vehicle stopping device, which can provide a non-lethal and effective tool for the control end to stop the fleeing vehicle. By partially blocking the driver's line of sight, the safety of the operator of the control end and the vehicle occupants is ensured, while reducing potential damage to property and the environment.

[0050] On the other hand, the present invention also provides a drone 200, such as Figure 4 As shown, the drone 200 includes the vehicle blocking system 100 described above.

[0051] In one embodiment, the drone can spray a set liquid through the sprayer 120 in the above-mentioned vehicle blocking system 100. The sprayer 120 is similar to a high-pressure water gun, and responds to the control command of the controller to spray the set liquid to the windshield of the target vehicle to prevent the driver from maintaining a clear field of vision, thereby safely and effectively preventing the driver of the controlled end from driving the vehicle by limiting the light transmittance of the windshield.

[0052] In another embodiment, in addition to spraying the set liquid through the ejector 120 in the above-mentioned vehicle blocking system 100, the drone may also include a colored egg ball 210 for containing the set liquid and a throwing device 220 for throwing the colored egg ball 210. The outer wall of the colored egg ball 210 is made of fragile material, and is broken when thrown by the throwing device 220 and contacts the windshield, thereby spraying the set liquid therein. The sprayed viscous liquid can partially block the driver's line of sight and effectively stop the movement of the vehicle, thereby ensuring the safety of the operator at the control end and the vehicle occupants.

[0053] The drone can be controlled to fly directly above the target vehicle and at the same speed as the target vehicle. Then, when the target recognition unit 110 detects that the distance to the target vehicle is within the set distance, a start command is issued. In response to the start command, the control unit 130 turns on the throwing device 220 to throw the egg ball 210 onto the windshield of the target vehicle, thereby partially blocking the line of sight to prevent driving.

[0054] On the other hand, the present invention further provides a vehicle blocking method 300, which can be implemented based on the vehicle blocking system 100 described above. Figure 5 As shown, the vehicle blocking method 300 may include:

[0055] Step S310, identifying a target vehicle; and

[0056] Step S320, in response to the start instruction, spraying a set liquid onto the windshield of the target vehicle, wherein the set liquid is a viscous liquid, and forms an occluding layer within a set time after contacting the windshield, and the transparency of the occluding layer is less than a first set threshold and greater than a second set threshold, and the first set threshold is greater than the second set threshold.

[0057] Specifically, when the vehicle blocking system 100 is portable, the vehicle blocking method 300 based on the vehicle blocking system 100 includes the following steps:

[0058] 1) The operator at the control end directs the injector 120 toward the windshield of the target vehicle while maintaining a safe distance.

[0059] 2) Press the trigger 140, and the propulsion system accurately sprays the viscous liquid onto the windshield of the target vehicle through the nozzle.

[0060] 3) The sprayed liquid immediately adheres to the windshield, forming a shielding layer that can partially block the driver's line of sight.

[0061] 4) Since the driver cannot clearly see the external environment through the windshield, the vehicle is forced to stop, allowing the operator at the controlling end to control the driver at the controlled end without further pursuit.

[0062] In another embodiment, when the vehicle blocking system 100 is installed, for example, it is installed on a control end vehicle, a fixed facility or a drone. The vehicle blocking method 300 based on the vehicle blocking system 100 includes the following steps:

[0063] 1) Identify the target vehicle driven by the driver of the controlled end.

[0064] 2) Detect whether the target vehicle is within a set distance, for example, actively approaching (drone) or passively waiting for it to approach (set at the intersection where the target vehicle passes).

[0065] 3) Activate the pump and spray the viscous liquid through the delivery tube onto the windshield of the target vehicle.

[0066] 4) Observe that the target vehicle has stopped because the driver’s vision is obstructed.

[0067] 5) Once the vehicle stops, control the driver of the controlled end.

[0068] In summary, the vehicle blocking method provided by the present invention can utilize windshield blocking and vehicle stopping equipment to provide a non-lethal and effective tool for the control end to stop the fleeing vehicle. By partially blocking the driver's line of sight, the safety of the operator at the control end and the vehicle occupants is ensured, while reducing potential damage to property and the environment.

[0069] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0070] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A vehicle blocking system, applied to a vehicle, a fixed facility or an unmanned aerial vehicle, characterized in that: The vehicle blocking system comprises: A target recognition unit, used to recognize a target vehicle; an injector containing a setting liquid; and A control unit is used to control the injector to inject the set liquid onto the windshield of the target vehicle in response to a start instruction, wherein the set liquid is a viscous liquid that forms a shielding layer within a set time after contacting the windshield, and the transparency of the shielding layer is less than a first set threshold and greater than a second set threshold, and the first set threshold is greater than the second set threshold.

2. The vehicle blocking system according to claim 1, characterized in that: The transparency of the set liquid decreases after contacting the windshield until the shielding layer is formed within the set time, wherein the set time is 5-10s.

3. The vehicle blocking system according to claim 2, characterized in that: The transparency DT of the set liquid satisfies the following formula: Among them, t is the time after the set liquid contacts the windshield, T0 is the set time, a is the first transparency coefficient of the set liquid, and b is the second transparency coefficient of the set liquid, which is between the second set threshold and the first set threshold.

4. The vehicle blocking system according to claim 1, characterized in that: The target recognition unit is also used for: identifying the distance to the target vehicle; and When the target vehicle is within a set distance, the start instruction is issued, wherein the set distance is 0.5-20m.

5. The vehicle blocking system according to claim 1, characterized in that: The ejector further comprises a propulsion device for ejecting the set liquid at a set pressure, wherein the propulsion device is pneumatic, spring or electric.

6. The vehicle blocking system according to claim 1, characterized in that: The viscosity of the setting liquid is 1000-10000 cP, the color of the shielding layer is black, gold, silver, red, yellow or blue, the saturation of the color is 60%-100%, and the setting liquid is non-flammable and non-toxic.

7. The vehicle blocking system according to claim 1, characterized in that: The vehicle blocking system further comprises a trigger, which is used to issue the start instruction when triggered.

8. The vehicle blocking system according to claim 6, characterized in that: The sprayer is a gun-shaped device, including a holder, a sight, a liquid reservoir, a nozzle and a safety lock. Wherein, the trigger is the trigger of the injector.

9. A drone, characterized in that: The drone comprises: a vehicle blocking system according to any one of claims 1-8; Egg balls, used to hold set liquids; and A throwing device is used for throwing the colored egg ball.

10. A vehicle blocking method, applied to a vehicle, a fixed facility or an unmanned aerial vehicle, characterized in that: The vehicle blocking method comprises: Identify the target vehicle; and In response to a start instruction, a set liquid is sprayed onto the windshield of the target vehicle, wherein the set liquid is a viscous liquid that forms a shielding layer within a set time after contacting the windshield, and the transparency of the shielding layer is less than a first set threshold and greater than a second set threshold, and the first set threshold is greater than the second set threshold.

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