Handheld electromagnetic throwing device

Abstract

The utility model provides a handheld electromagnetic throwing device, which belongs to the technical field of fire rescue and comprises a gun barrel, a bullet and a multi-stage electromagnetic acceleration module. The multi-stage electromagnetic acceleration modules are coaxially located around the gun barrel stage by stage and used for providing driving force for the bullet, so that the speed of the bullet in the gun barrel is increased stage by stage. Each stage of electromagnetic acceleration module comprises a coil, a capacitor, a first photoelectric sensor and a second photoelectric sensor, the first photoelectric sensor and the second photoelectric sensor are used for detecting the position of a bullet, and the capacitor is used for providing electric energy for the coil, so that a pulsed magnetic field is generated around the coil, and motion of the bullet is accelerated; the controller is used for controlling the discharge condition of the capacitor to the coil; the multi-stage electromagnetic acceleration technology is adopted, the throwing efficiency is effectively improved, the gun type design is adopted, ergonomics is met, the design is compact, the whole throwing device is light in weight, high in strength, convenient to carry and easy to operate, and the throwing task suitable for fire rescue and the task needing window breaking rescue can be efficiently completed.

Description

Technical Field

[0001] This utility model belongs to the field of fire rescue technology, and in particular relates to a handheld electromagnetic throwing device. Background Technology

[0002] Rescue throwers play a vital role in fire and rescue operations, primarily used for throwing ropes to establish rope rescue channels and for throwing inflatable lifebuoys to rescue people trapped in water.

[0003] Currently, the main power sources for throwing devices are gunpowder and pneumatic systems. Gunpowder throwing devices are rarely used due to their high risk and strict regulations. The mainstream pneumatic throwing mode uses the pressure of high-pressure gas to force the projectile out of the launch tube, achieving the purpose of long-range throwing. Traditional pneumatic life-saving throwing devices are heavy and inconvenient to carry and move. They require connecting the gas cylinder to the throwing device, which is a complicated process that requires high skill from the user. Moreover, the lengthy process can easily cause the best launch opportunity to be missed. After the high-pressure gas cylinder runs out of compressed air, it needs to be refilled with an air compressor, which is extremely inconvenient for use in the field. The storage and use of high-pressure gas is inherently dangerous, with the possibility of explosion at any time, posing a certain risk to the personal safety of the user and maintenance personnel. Because it uses compressed gas for launching, the recoil is large, which greatly affects the accuracy of the launch, resulting in inaccurate throwing. The high-pressure gas cylinder of pneumatic equipment is a regulated device, requiring dedicated personnel for maintenance and regular inspections by qualified departments. Daily maintenance is cumbersome and costly. The Guangdong Mobile Professional Detachment of China Rescue proposed a handheld electromagnetic thrower (CN119022716A), which utilizes the inductive acceleration principle. However, this acceleration principle causes severe heating of the acceleration coil and low energy utilization. In response, we proposed a handheld electromagnetic thrower device based on the magnetoresistive principle. Utility Model Content

[0004] This utility model addresses the problems existing in the prior art by providing a handheld electromagnetic thrower that can use magnetoresistive multi-stage electromagnetic acceleration technology to throw ropes for building rope rescue channels, throw inflatable lifebuoys, and rescue people trapped in water.

[0005] To achieve the above objectives, this utility model provides a handheld electromagnetic throwing device, comprising:

[0006] An electromagnetic launching device includes a barrel, a projectile, and a multi-stage electromagnetic acceleration module; the multi-stage electromagnetic acceleration module is coaxially located around the barrel at each stage to provide driving force for the projectile, thereby increasing the velocity of the projectile within the barrel at each stage.

[0007] Each stage of the electromagnetic acceleration module includes a coil, a capacitor, a first photoelectric sensor, and a second photoelectric sensor. The first and second photoelectric sensors are used to detect the position of the projectile. The capacitor is used to provide electrical energy to the coil, so that a pulsed magnetic field is generated around the coil to accelerate the movement of the projectile.

[0008] The controller controls the discharge of the capacitor to the coil. When each stage of the electromagnetic acceleration module detects that the projectile has reached the first position, it controls the capacitor to discharge to the coil, thereby accelerating the projectile. When each stage of the electromagnetic acceleration module detects that the projectile has reached the second position, it controls the capacitor to stop discharging to the coil, thereby terminating the acceleration of the projectile.

[0009] As a further explanation of this utility model, in each stage of the electromagnetic acceleration module,

[0010] The first photoelectric sensor, the second photoelectric sensor, and the coil are coaxially located around the barrel. The first photoelectric sensor and the second photoelectric sensor are spaced a certain distance apart, and one end of the second photoelectric sensor is close to the coil. During the throwing process, the projectile passes through the first photoelectric sensor, the second photoelectric sensor, and the coil in sequence. When the projectile completely blocks the second photoelectric sensor, it is the first position. When the projectile enters the coil and the first photoelectric sensor is completely unblocked, it is the second position.

[0011] The capacitor is located below the coil and is connected in parallel with the coil.

[0012] As a further explanation of this utility model, each stage of the electromagnetic acceleration module also includes a dual-channel voltage comparator and a bipolar transistor;

[0013] The dual-channel voltage comparator is electrically connected to the first photoelectric sensor, the second photoelectric sensor, and the controller. The first photoelectric sensor and the second photoelectric sensor transmit the detected projectile position signal to the dual-channel voltage comparator. The dual-channel voltage comparator outputs a first position signal and a second position signal to the controller.

[0014] The bipolar transistor is connected to the controller, the capacitor, and the coil. When the controller receives a first position signal, it controls the bipolar transistor to turn on, causing the capacitor to discharge to the coil. When the controller receives a second position signal, it controls the bipolar transistor to turn off, causing the capacitor to stop discharging to the coil.

[0015] As a further explanation of this utility model, the electromagnetic launching device also includes a projectile body, the diameter of which is larger than the outer diameter of the projectile placement opening;

[0016] The projectile contains a wire spool, which contains a rescue line; a rope loop is fixedly connected to the tail end of the projectile, one end of the rescue line is connected to the rope loop, and the other end is connected to a rescue device.

[0017] As a further explanation of this utility model, the electromagnetic projectile also includes a battery, a switching tube, and a step-up transformer;

[0018] The battery is located inside the grip and below the capacitor, and is used to charge the capacitor;

[0019] The switching transistor is the power switch of the electromagnetic projectile, and the switching transistor is electrically connected to the battery and the step-up transformer; the step-up transformer is electrically connected to the controller and the capacitor;

[0020] When the switch is turned on, the battery charges the capacitor through the step-up transformer, which converts the battery voltage into the capacitor voltage.

[0021] As a further explanation of this utility model, the electromagnetic thrower also includes a trigger located on one side of the grip 6.

[0022] As a further explanation of this utility model, the electromagnetic projectile also includes a laser sight, which is fixedly installed on the top of the housing and is used to correct the angle of the electromagnetic projectile.

[0023] As a further explanation of this utility model, the electromagnetic projectile also includes a display, which is located below the projectile placement port. The display is electrically connected to the controller and is used to display the battery charge, the capacitor voltage, and the voltage value of the step-up transformer.

[0024] As a further explanation of this utility model, the projectile is a ferromagnetic projectile.

[0025] Compared with the prior art, the present invention has the following beneficial technical effects:

[0026] This invention employs multi-stage electromagnetic acceleration technology, achieving precise throwing by accurately controlling the discharge timing of each acceleration stage, thus effectively improving throwing efficiency. The outer shell adopts a gun-shaped design, which is ergonomic and compact. The entire thrower is lightweight, high-strength, easy to carry, and simple to operate. It can efficiently complete throwing tasks suitable for fire rescue and is also suitable for tasks requiring window breaking for rescue. Attached Figure Description

[0027] Figure 1 This is the circuit diagram of the handheld electromagnetic projectile provided by this utility model.

[0028] Figure 2This is a dimensional drawing of the handheld electromagnetic projector provided by this utility model.

[0029] Figure 3 This is a structural diagram of the handheld electromagnetic projectile provided by this utility model.

[0030] Figure 4 This is a schematic diagram of the electromagnetic acceleration module structure provided by this utility model.

[0031] Figure 5 This is a schematic diagram of the coil discharge time provided by this utility model.

[0032] Figure 6 The present invention provides a structural diagram of the projectile.

[0033] Figure 7 This is a schematic diagram of the projectile installation provided by this utility model.

[0034] Figure label:

[0035] 1. Barrel; 2. Capacitor; 3. Laser sight; 4. Electromagnetic acceleration module; 5. Trigger; 6. Grip; 7. Housing; 8. Battery; 9. Controller; 10. Bullet placement port; 11. Display; 121. First photoelectric sensor; 122. Second photoelectric sensor; 13. Coil; 14. Bullet; 15. Rope loop; 16. Wire spool; 17. Rescue line; 18. Bullet body. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] The technical solution of this utility model will be explained below with reference to specific embodiments.

[0043] like Figure 1-7 As shown, a handheld electromagnetic projectile is provided, comprising:

[0044] An electromagnetic launching device includes a barrel 1, a projectile 14, and a multi-stage electromagnetic acceleration module 4. The multi-stage electromagnetic acceleration module 4 is coaxially located around the barrel 1 in succession to provide driving force for the projectile 14, thereby increasing the velocity of the projectile 14 within the barrel 1 step by step. Each stage of the electromagnetic acceleration module 4 includes a coil 13, a capacitor 2, a first photoelectric sensor 121, and a second photoelectric sensor 122. The first photoelectric sensor 121 and the second photoelectric sensor 122 are used to detect the position of the projectile 14, and the capacitor 2 is used to provide electrical energy to the coil 13, thereby generating a pulsed magnetic field around the coil 13 and accelerating the movement of the projectile 14.

[0045] The controller 9 is used to control the discharge of capacitor 2 to coil 13. When each stage electromagnetic acceleration module 4 detects that the projectile 14 has reached the first position, it controls capacitor 2 to discharge to coil 13, thereby accelerating the projectile 14. When each stage electromagnetic acceleration module 4 detects that the projectile 14 has reached the second position, it controls capacitor 2 to stop discharging to coil 13, thereby terminating the acceleration of the projectile 14.

[0046] In one feasible approach, the controller 9 preferably uses the existing STC15W408AS microcontroller to coordinate and control the entire system. Other existing microcontrollers can also be used, without specific limitations. The electromagnetic acceleration module 4 uses magnetoresistive acceleration with a ferromagnetic projectile. The coil 13 is a coil wound with copper wire. The projectile 14 undergoes multiple stages of acceleration, with the speed gradually increasing. Each stage of the electromagnetic acceleration module 4 is designed independently, facilitating installation and debugging. Each stage of the electromagnetic acceleration module 4 includes a first photoelectric sensor 121, a second photoelectric sensor 122, a coil 13, and a capacitor 2. When the projectile 14 enters each stage of the coil 13, the first photoelectric sensor 121 and the second photoelectric sensor 122 transmit the detected position to a dual-channel voltage comparator. The dual-channel voltage comparator transmits the first position signal to the controller 9, which triggers the bipolar transistor to conduct, instantly releasing the energy of the capacitor 2, causing the coil 13 of that stage to generate a strong pulsed magnetic field. Through this stage-by-stage acceleration design, the terminal speed of the projectile 14 can be effectively increased.

[0047] In each stage of the electromagnetic acceleration module 4, the first photoelectric sensor 121, the second photoelectric sensor 122, and the coil 13 are coaxially located around the barrel 1. The first photoelectric sensor 121 and the second photoelectric sensor 122 are separated by a certain distance, and one end of the second photoelectric sensor 122 is close to the coil 13. During the throwing process, the projectile 14 passes through the first photoelectric sensor 121, the second photoelectric sensor 122, and the coil 13 in sequence. When the projectile 14 completely blocks the second photoelectric sensor 122, it is the first position. When the projectile 14 enters the coil 13 and the first photoelectric sensor 121 is completely unblocked, it is the second position. The capacitor 2 is located below the coil 13 and is connected in parallel with the coil 13.

[0048] In one feasible manner, in each stage of the electromagnetic acceleration module 4, the first photoelectric sensor 121 and the second photoelectric sensor 122 are separated by a certain distance, and the distance between them plus the length of the first photoelectric sensor 121 and the second photoelectric sensor 122 is less than the length of the projectile 14. During the process of the projectile 14 passing through each stage of the electromagnetic acceleration module 4, when the projectile 14 completely covers the first photoelectric sensor 121 and the second photoelectric sensor 122, the projectile 14 is ready to enter the coil 13. This position is the first position. When the projectile 14 reaches the middle of the coil 13, the tail of the projectile 14 has passed the first photoelectric sensor 121. This position is the second position.

[0049] Each stage of the electromagnetic acceleration module 4 also includes a dual-channel voltage comparator and a bipolar transistor. The dual-channel voltage comparator is electrically connected to the first photoelectric sensor 121, the second photoelectric sensor 122, and the controller 9. The first photoelectric sensor 121 and the second photoelectric sensor 122 transmit the detected position signal of the warhead 14 to the dual-channel voltage comparator. The dual-channel voltage comparator outputs a first position signal and a second position signal to the controller 9. The bipolar transistor connects the controller 9, the capacitor 2, and the coil 13. When the controller 9 receives the first position signal, it controls the bipolar transistor to turn on, causing the capacitor 2 to discharge to the coil 13. When the controller 9 receives the second position signal, it controls the bipolar transistor to turn off, causing the capacitor 2 to stop discharging to the coil 13.

[0050] In one feasible implementation, the dual-channel voltage comparator uses the existing LM358, and the bipolar transistor uses the existing IGBT high-power transistor. By presetting a voltage signal in the dual-channel voltage comparator LM358, the voltage signals continuously transmitted by the first photoelectric sensor 121 and the second photoelectric sensor 122 are compared with the preset voltage signal. After comparison, the result of matching is sent to the controller 9. The preset voltage signal includes a first preset voltage signal and a second preset voltage signal. When the first preset voltage signal is matched, a first position signal is output, and when the second preset voltage signal is matched, a second position signal is output.

[0051] Specifically, in each stage of the electromagnetic acceleration module 4, when the projectile 14 enters the coil 13, the second photoelectric sensor 122 is completely blocked. The second photoelectric sensor 122 continuously outputs a low-level signal to the dual-channel voltage comparator. The dual-channel voltage comparator compares the received voltage signal with a preset voltage signal. If it matches the first preset voltage signal, it outputs a first position signal to the controller 9. After the controller 9 detects (receives) the first position signal, it sends a discharge signal to control the IGBT high-power transistor to turn on. The capacitor 2 discharges instantaneously to the coil 13, generating a strong pulsed magnetic field and accelerating the projectile's movement. When the projectile 14 reaches the middle of the coil 13, the tail of the projectile 14 has passed the first photoelectric sensor 121. The first photoelectric sensor 121 is unblocked. During this time, the first photoelectric sensor 121 continuously outputs a high level to the dual-channel voltage comparator. The dual-channel voltage comparator compares the received voltage signal with a preset voltage signal. If it matches the second preset voltage signal, it outputs a second position signal to the controller 9. After the controller 9 detects the second position signal, it sends a discharge signal to control the IGBT high-power transistor to turn off, and the capacitor 2 stops discharging to the coil 13.

[0052] The electromagnetic projectile also includes a housing 7, a projectile placement port 10, a grip 6, and a projectile body 18. The projectile placement port 10 is fixedly connected to one end of the barrel 1. The ends of the barrel 1 and the projectile placement port 10 that are far apart are both fixedly connected to the housing 7. The grip 6 is located below the housing 7 and is fixedly connected to the housing 7. The diameter of the projectile body 18 is larger than the outer diameter of the projectile placement port 10.

[0053] Specifically, the projectile body 18 is nested inside a wire tube 16, and the wire tube 16 contains a rescue line 17; the tail end of the projectile 14 is fixedly connected to a rope ring 15, one end of the rescue line 17 is connected to the rope ring 15, and the other end is connected to a rescue device.

[0054] In one feasible method, the warhead 14 is placed in the warhead placement port 10, and the diameter of the projectile body 18 is larger than the outer diameter of the warhead placement port 10. During rescue operations, the warhead 14 is accelerated and used to pull the rescue line 17 to a designated location to establish a rope rescue channel. An inflatable lifebuoy can also be placed in the projectile body 18, and the inflatable lifebuoy is pulled by the warhead 14 to a designated location to rescue people trapped in the water.

[0055] The electromagnetic thrower also includes a trigger 5, a battery 8, a switching transistor, and a step-up transformer; the trigger 5 is located on one side of the grip 6; the battery 8 is located inside the grip 6 and below the capacitor 2, and is used to charge the capacitor 2; the switching transistor is the power switch of the electromagnetic thrower, and is electrically connected to the battery 8 and the step-up transformer; the step-up transformer is electrically connected to the controller 9 and the capacitor 2; when the switching transistor is turned on, the battery 8 charges the capacitor 2 through the step-up transformer, which is used to convert the voltage of the battery 8 into the voltage of the capacitor 2.

[0056] In one feasible implementation, the switching transistor acts as the power switch for the electromagnetic projectile, trigger 5 serves as the launch switch, battery 8 powers the entire system (using a 12V lithium-ion DC power battery), and the step-up transformer is a 12V / 800V transformer to boost the voltage from 12V to approximately 800V to charge capacitor 2. The velocity of the projectile 14 can be modulated by changing the charging voltage. The specific circuit connection process is as follows... Figure 1As shown, one end of the DC12V power supply is connected to one end of the primary phase coil of the step-up transformer; the other end of the DC12V power supply is connected to one end of the switching transistor, and the switching signal is input from the control terminal of the switching transistor; the other end of the switching transistor is connected to the other end of the primary phase coil of the step-up transformer; one end of the secondary phase coil of the transformer is connected to the input terminal of the bridge rectifier circuit; one end of the output terminal of the bridge rectifier circuit is connected to the current-limiting resistor; the other end of the output terminal of the bridge rectifier circuit is connected to the negative terminal of capacitor 2 and one end of the IGBT high-power transistor; the other end of the current-limiting resistor is connected to the positive terminal of capacitor 2 and one end of the loop resistor; the other end of the loop resistor is connected to one end of coil 13; the other end of coil 13 is connected to the other end of the IGBT high-power transistor; the control terminal of the IGBT high-power transistor receives the on / off signal from controller 9; the control on / off signal of controller 9 is determined by a photoelectric sensor and a dual-channel voltage comparator.

[0057] The electromagnetic projectile also includes a laser sight 3, which is fixedly mounted on the top of the housing 7 and is used to correct the angle of the electromagnetic projectile.

[0058] In one feasible approach, the laser sight 3 can also determine the location of the person to be rescued, correct the throwing angle and the launching distance, and the laser sight 3 uses existing laser aiming instruments, which will not be described in detail here.

[0059] The electromagnetic projectile also includes a display 11, which is located below the projectile placement port 10. The display 11 is electrically connected to the controller 9 and is used to display the battery power, capacitor voltage, and step-up transformer voltage.

[0060] In one feasible approach, the display 11 uses an LCD screen connected to the controller 9, which can display power and voltage values; the LCD screen uses an existing LCD screen, which will not be described in detail here.

[0061] The specific working process of the above-mentioned handheld electromagnetic projectile is as follows:

[0062] Taking a 13-level acceleration handheld electromagnetic projectile as an example, when using a 13-level electromagnetic acceleration module for electromagnetic acceleration, the handheld electromagnetic projectile can launch at a maximum distance of 200 meters.

[0063] After the power switch is turned on, i.e., the switching transistor is activated, the charging voltage is set according to the required throwing distance. The LCD screen displays the voltage and charge value of battery 8 and the voltage value of capacitor 2. After the setting is completed, battery 8 begins to charge capacitor 2 of each electromagnetic acceleration module. Charging is then complete. Controller 9 is responsible for the overall control of the system. The gun has 13 acceleration stages. Each electromagnetic acceleration module 4 is equipped with an independent projectile detection and discharge trigger module. The projectile 14 passes through the electromagnetic acceleration modules of stages 1 to 13 in sequence. In each electromagnetic acceleration module, when the first photoelectric sensor 121 and the second photoelectric sensor 122 detect that the projectile 14 has entered coil 1... At time 3, the first position signal is transmitted to controller 9. Controller 9 triggers the IGBT high-power transistor to switch on and off, controlling capacitor 2 to discharge to coil 13, accelerating the movement of projectile 14. When the second position signal is transmitted, controller 9 controls capacitor 2 to stop discharging, terminating the acceleration of projectile 14. Each time capacitor 2 discharges to coil 13, coil 13 generates a strong pulsed magnetic field, achieving step-by-step acceleration of projectile 14. Precise throwing is achieved through laser aiming device 3. After locking onto the target with laser aiming device 3, trigger 5 is pulled, projectile 14 accelerates, pulling rescue rope 17 to the target position, completing the throwing task; effectively improving throwing efficiency. The entire handheld electromagnetic thrower is ergonomically designed, compact, and lightweight. The overall structure of the device weighs approximately 6 kg, making it easy to carry, hold for extended periods, and operate. It is suitable for throwing operations in fire rescue. This handheld electromagnetic thrower uses a multi-stage electromagnetic acceleration module to accelerate the projectile, and is also suitable for emergency throwing tasks requiring window breaking rescue.

[0064] The embodiments given above are preferred examples of implementing this utility model, and this utility model is not limited to the above embodiments. Any non-essential additions or substitutions made by those skilled in the art based on the technical features of the technical solution of this utility model shall fall within the protection scope of this utility model.

Claims

1. A handheld electromagnetic projectile launcher, characterized in that, The electromagnetic projectile includes: An electromagnetic launching device includes a barrel (1), a projectile (14), and a multi-stage electromagnetic acceleration module (4); the multi-stage electromagnetic acceleration module (4) is coaxially located around the barrel (1) in stages to provide driving force for the projectile (14) so ​​that the speed of the projectile (14) in the barrel (1) increases in stages. Each stage of the electromagnetic acceleration module (4) includes a coil (13), a capacitor (2), a first photoelectric sensor (121), and a second photoelectric sensor (122). The first photoelectric sensor (121) and the second photoelectric sensor (122) are used to detect the position of the projectile (14). The capacitor (2) is used to provide electrical energy to the coil (13) to generate a pulsed magnetic field around the coil (13) and accelerate the movement of the projectile (14). The controller (9) controls the discharge of the capacitor (2) to the coil (13). When the electromagnetic acceleration module (4) of each stage detects that the projectile (14) has reached the first position, it controls the capacitor (2) to discharge to the coil (13) to accelerate the projectile (14). When the electromagnetic acceleration module (4) of each stage detects that the projectile (14) has reached the second position, it controls the capacitor (2) to stop discharging to the coil (13) and terminate the acceleration of the projectile (14).

2. The handheld electromagnetic projectile according to claim 1, characterized in that, In each stage of the electromagnetic acceleration module (4), The first photoelectric sensor (121), the second photoelectric sensor (122), and the coil (13) are coaxially located around the barrel (1) in sequence. The first photoelectric sensor (121) and the second photoelectric sensor (122) are spaced a certain distance apart, and one end of the second photoelectric sensor (122) is close to the coil (13). During the throwing process, the projectile (14) passes through the first photoelectric sensor (121), the second photoelectric sensor (122), and the coil (13) in sequence. When the projectile (14) completely blocks the second photoelectric sensor (122), it is the first position. When the projectile (14) enters the coil (13) and the first photoelectric sensor (121) is completely unblocked, it is the second position. The capacitor (2) is located below the coil (13) and is connected in parallel with the coil (13).

3. A handheld electromagnetic projectile according to claim 2, characterized in that, Each stage of the electromagnetic acceleration module (4) also includes a dual-channel voltage comparator and a bipolar transistor; The dual-channel voltage comparator is electrically connected to the first photoelectric sensor (121), the second photoelectric sensor (122), and the controller (9). The first photoelectric sensor (121) and the second photoelectric sensor (122) transmit the detected warhead (14) position signal to the dual-channel voltage comparator. The dual-channel voltage comparator outputs the first position signal and the second position signal to the controller (9). The bipolar transistor is connected to the controller (9), the capacitor (2) and the coil (13). When the controller (9) receives the first position signal, it controls the bipolar transistor to turn on, so that the capacitor (2) discharges to the coil (13). When the controller (9) receives the second position signal, it controls the bipolar transistor to turn off, so that the capacitor (2) stops discharging to the coil (13).

4. A handheld electromagnetic projectile according to claim 1, characterized in that, The electromagnetic projectile also includes a housing (7), a projectile placement port (10), and a grip (6); the projectile placement port (10) is fixedly connected to one end of the barrel (1), and the ends of the barrel (1) and the projectile placement port (10) that are far apart are both fixedly connected to the housing (7). The grip (6) is located below the housing (7) and is fixedly connected to the housing (7).

5. A handheld electromagnetic projectile according to claim 4, characterized in that, The electromagnetic launching device also includes a projectile body (18), the diameter of which is larger than the outer diameter of the projectile placement port (10); The projectile (18) contains a wire tube (16), and the wire tube (16) contains a rescue line (17); the tail end of the projectile (14) is fixedly connected to a rope ring (15), one end of the rescue line (17) is connected to the rope ring (15), and the other end is connected to the rescue device.

6. A handheld electromagnetic projectile according to claim 4, characterized in that, The electromagnetic projectile also includes a battery (8), a switching transistor, and a step-up transformer; The battery (8) is located inside the grip (6) and below the capacitor (2), and is used to charge the capacitor (2); The switching transistor is the power switch of the electromagnetic projectile, and the switching transistor is electrically connected to the battery (8) and the step-up transformer; the step-up transformer is electrically connected to the controller (9) and the capacitor (2); When the switch is turned on, the battery (8) charges the capacitor (2) through the step-up transformer, which is used to convert the voltage of the battery (8) into the voltage of the capacitor (2).

7. A handheld electromagnetic projectile according to claim 6, characterized in that, The electromagnetic thrower also includes a trigger (5) located on one side of the grip (6).

8. A handheld electromagnetic projectile according to claim 4, characterized in that, The electromagnetic projectile also includes a laser aiming device (3), which is fixedly installed above the housing (7) and is used to correct the angle of the electromagnetic projectile.

9. A handheld electromagnetic projectile according to claim 6, characterized in that, The electromagnetic projectile also includes a display (11) located below the projectile placement port (10) and electrically connected to the controller (9) for displaying the battery (8) power, the capacitor (2) voltage, and the step-up transformer voltage.

10. A handheld electromagnetic projectile according to claim 1, characterized in that, The warhead (14) is a ferromagnetic warhead.

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