Passive wireless firing signal generation and acquisition device

Abstract

This invention provides a passive wireless firing signal generation and acquisition device, including a firing component, a vibration sensor, and a vibration signal processing module. The firing component includes a lever, a linkage shaft, a dial head, a vibrator assembly, and a housing. The linkage shaft and the vibrator assembly are mounted on the housing. The lever is connected to the linkage shaft, and the dial head is fixed to the linkage shaft. The vibrator assembly contains one or more vibrators, each with a different natural frequency. When a vibrator is tugged, it vibrates at its natural frequency. Each vibrator in the vibrator assembly can generate a vibration signal at its natural frequency. The vibration signal processing module identifies the existence of a valid vibration signal for a corresponding vibrator based on the signal-to-noise ratio of the vibrator's natural frequency signal. This effectively reduces the influence of external noise on the identification results, improves the accuracy of identification, and enhances the processing efficiency of the vibration signal processing module.

Description

Technical Field

[0001] This utility model belongs to the field of signal acquisition technology, and in particular relates to a passive wireless firing signal generation and acquisition device. Background Technology

[0002] Currently, live-fire combat training is developing towards intelligence. Direct-fire weapons often use lasers instead of ammunition in live-fire combat training. Specifically, laser transmitters are mounted on weapons to simulate weapon firing, and laser decoding devices are installed on personnel or equipment. During combat training, a weapon firing signal acquisition device installed at the weapon's trigger collects the trigger pull signal and transmits it to the laser transmitter, causing it to fire a laser beam. If the laser detection device installed on personnel or equipment receives the laser beam, it is considered a hit. Existing firing signal acquisition devices and laser transmitters are generally connected via wired or wireless connections.

[0003] Existing wired weapon firing signal acquisition devices typically connect to laser transmitters via cables or connectors. This presents challenges such as the cables being easily pulled and damaged, as well as difficulties in designing seals and salt spray protection for both the firing signal acquisition device and the laser transmitter.

[0004] Existing wireless weapon firing signal acquisition devices also have shortcomings.

[0005] For example, a patent application numbered 201811144474.8 describes an infrared-triggered external firing mechanism for light weapons. This mechanism transmits the firing signal via infrared light-controlled remote control, triggering laser emission. While this patent offers advantages such as easy replacement and maintenance, and benefits from improved sealing and salt spray resistance, it still has the following shortcomings:

[0006] 1. There is still a relatively long cable between the infrared transmitter and the firing button, which is easily damaged by the soldiers' rough handling during training.

[0007] 2. The infrared transmitter requires battery power. Since field combat training often lasts for several days, batteries are prone to running out and need to be recharged or replaced, which can interrupt the training process and affect the effectiveness of live-fire exercises. Furthermore, for large numbers of devices used by many personnel, recharging or replacing batteries is extremely inconvenient and increases the risk of loss in the field.

[0008] For example, a utility model patent for a wireless light weapon firing device and firing system, with application number 202021693031.7, transmits firing signals via radio waves to trigger laser emission. Although this patent is cable-free, it still requires battery power. Utility Model Content

[0009] Purpose of the invention: The purpose of this utility model is to solve the problems of easy damage to the cables of existing weapon firing signal acquisition devices and the need for charging or battery replacement.

[0010] To achieve the purpose of this utility model, this utility model discloses a passive wireless firing signal generation and acquisition device, including a firing component, a vibration sensor, and a vibration signal processing module;

[0011] The firing component includes a lever, a linkage shaft, a trigger head, an oscillator assembly, and a housing; the linkage shaft and the oscillator assembly are mounted on the housing; the lever is connected to the linkage shaft; the trigger head is fixed on the linkage shaft; the oscillator assembly contains one or more oscillators, each with a different natural frequency, and the oscillators can vibrate at their natural frequencies after being tugged.

[0012] The linkage shaft can be equipped with one or more dials, each dial being used to actuate a corresponding vibrator;

[0013] The firing mechanism is mounted near the weapon's trigger; the lever contacts the weapon's trigger.

[0014] When the weapon trigger is pulled, the lever moves, which in turn moves the dial head via the linkage shaft. During the movement of the dial head, the corresponding oscillator is activated, causing the oscillator to vibrate at its natural frequency. The vibration signal is transmitted through the weapon body. The single dial head can activate the corresponding oscillator only once during bidirectional movement, or it can activate the corresponding oscillator twice during bidirectional movement.

[0015] The vibration sensor is rigidly connected to the weapon body directly or indirectly.

[0016] The vibration sensor is electrically connected to the vibration signal processing module.

[0017] The vibration signal processing module includes an amplification circuit and a frequency detection circuit;

[0018] After receiving the vibration signal generated by the oscillator and propagated through the weapon body, the vibration sensor outputs it to the vibration signal processing module. After being amplified by the amplifier circuit, it is processed by the frequency detection circuit. If the amplitude of the natural frequency of one of the oscillators in the frequency detection result is greater than 1.5 times the maximum noise signal, it is determined that the oscillator is moved by the corresponding trigger, thereby outputting a corresponding effective firing signal to control the firing or stopping of the simulated weapon launcher.

[0019] The vibrator assembly is a soundboard, and the vibrator is a vibrating plate; the soundboard contains one or more vibrating plates with different natural frequencies; each vibrating plate can be plucked by a corresponding dial and generate a vibration signal consistent with its natural frequency.

[0020] When a dial is installed on the linkage shaft, when the trigger is pulled to the effective firing position of the weapon, the dial moves the corresponding vibrator; the vibration signal processing module detects the vibration signal corresponding to the natural frequency of the vibrator, indicating a valid firing operation, and thus outputs the corresponding valid firing signal to control the firing of the simulated weapon launcher.

[0021] When two levers are installed on the linkage shaft, the two levers are respectively referred to as the first lever and the second lever. When the trigger is pulled to the first firing position of the weapon, the first lever moves the corresponding vibrator A; when the trigger is pulled again to the second firing position of the weapon, the second lever moves the corresponding vibrator B.

[0022] The signal processing module detects a vibration signal at the natural frequency corresponding to oscillator A, indicating that the trigger has been pulled to an effective firing position of the weapon; the signal processing module detects a vibration signal at the natural frequency corresponding to oscillator B, indicating that the trigger is in a second firing position.

[0023] The vibration signal processing module first detects the vibration signal at the natural frequency corresponding to oscillator A, and then detects the vibration signal at the natural frequency corresponding to oscillator B, indicating that the trigger has been pulled to the second firing position.

[0024] The vibration signal processing module first detects the vibration signal at the natural frequency corresponding to oscillator B, and then detects the vibration signal at the natural frequency corresponding to oscillator B, indicating that the trigger has been released.

[0025] The vibration sensor is rigidly connected to the weapon body in a direct manner, meaning that the vibration sensor can be directly fixed to the weapon.

[0026] The vibration sensor is indirectly rigidly connected to the weapon body, meaning that the vibration sensor is first fixed inside the simulated weapon launcher housing and rigidly connected to the simulated weapon launcher housing, and the simulated weapon launcher housing is rigidly connected to the weapon body.

[0027] The effective firing signal detected by the vibration signal processing module is used to control the firing of the simulated weapon launcher, and the detected trigger release signal is used to control the cessation of firing of the simulated weapon launcher.

[0028] The firing mechanism does not contain a battery and does not require a power source. The energy required to generate a signal comes from the work done by the operator's finger pressing the trigger, with a portion of that energy used to actuate the oscillator. This does not mean that the firing mechanism does not require energy to operate.

[0029] Since the signal transmitted from the firing mechanism to the simulated weapon transmitter is transmitted through the weapon itself (the gun body), which is itself a conductor, there is no need for a cable connection between the firing mechanism and the simulated weapon transmitter, thus achieving the function of wireless signal transmission.

[0030] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0031] 1) When a soldier pulls the trigger in simulated firing, the trigger's linkage mechanism causes the corresponding vibrator to generate a vibration signal at its natural frequency, which serves as the weapon's firing trigger signal. This triggering component requires no power supply, effectively solving the problem of training interruptions caused by battery depletion and the need for battery replacement or recharging during live-fire exercises, thus improving the quality of live-fire training. The term "passive" in this device means it does not require a power supply, but rather that it requires no energy. The energy required by this device comes from the pulling force transmitted by the shooter (trainee) when pulling the trigger; a small portion of this force is used to actuate the vibrator, causing it to generate a vibration signal.

[0032] 2) The vibration signal generated by the oscillator is transmitted through the weapon body. There is no need for cable transmission between the firing mechanism and the simulated weapon launcher, which avoids the problem of training interruption caused by damage to cables due to soldiers crawling and rolling during training. The firing signal is generated by the vibration of the oscillator and transmitted through the gun body to the vibration sensor at the gun head. After being detected and identified, it triggers the simulated weapon launcher to fire lasers or perform other simulated firing operations.

[0033] 3) Each oscillator in the oscillator group can generate a vibration signal at its natural frequency. The vibration signal processing module identifies whether there is a valid vibration signal of the corresponding oscillator based on the signal-to-noise ratio of the oscillator's natural frequency signal. This can effectively reduce the impact of external noise on the identification results, improve the accuracy of identification, and enhance the processing efficiency of the vibration signal processing module.

[0034] 4) The signal generated by the firing action is transmitted through the gun body itself, and the vibration sensor can detect a relatively strong signal. However, the vibration signal generated by firing in other gun bodies will be transmitted through the air and then transmitted to this gun body, but it has been greatly attenuated and does not have enough strength to be detected. Furthermore, because the natural frequencies of the vibrators equipped in each gun are different, each gun only recognizes the natural frequency of the vibrator equipped in its own gun. Therefore, it is not easy to have interference and false triggering problems between guns, which further improves the reliability of this device in recognizing the firing action of this gun. Attached Figure Description

[0035] Figure 1 This is a block diagram of a passive wireless firing signal generation and acquisition device.

[0036] Figure 2 This is a schematic diagram of the overall installation of a passive wireless firing signal generation and acquisition device.

[0037] Figure 3 It is a passive wireless firing signal generation and acquisition device.

[0038] Figure 4 This is a schematic diagram of the external structure of the firing mechanism.

[0039] Figure 5 This is a schematic diagram of the internal structure of the firing mechanism.

[0040] Figure 6 This is a schematic diagram illustrating the working principle of the linkage mechanism when the trigger is pulled.

[0041] Figure 7 This is a schematic diagram illustrating the working principle of the linkage mechanism when the trigger is released.

[0042] Figure 8 This is a schematic diagram of the oscillator assembly.

[0043] Figure 9 This is a schematic diagram showing how vibrator A is moved when the trigger is pulled.

[0044] Figure 10 A schematic diagram showing the movement of vibrator B when the trigger is pulled.

[0045] Figure 11 This is a schematic diagram showing the movement of oscillator B when the trigger is released.

[0046] Figure 12 A schematic diagram showing the movement of oscillator A when the trigger is released.

[0047] Figure 13 This is a system flowchart.

[0048] Figure 14 This is a schematic diagram of the components on the linkage shaft.

[0049] Figure 15 A schematic diagram of the waist groove structure on the linkage shaft.

[0050] Figure 16 A schematic diagram showing the state of the two rotating ends of the linkage shaft.

[0051] Figure 17 A schematic diagram showing the position of the oscillator A moved by the angled dial.

[0052] Figure 18 A schematic diagram showing the position of the oscillator B moved by the flat dial.

[0053] Figure 19 Schematic diagram of bidirectional oscillator B driven by a flat dial.

[0054] Figure 20 Schematic diagram of unidirectional oscillator A driven by the angled dial.

[0055] The attached figures are labeled as follows: 1. Firing component; 2. Vibration sensor; 3. Vibration signal processing module; 4. Simulated weapon launcher; 5. Rigid clamp; 6. Trigger; 7. Lever; 8. Housing; 9. Countersunk screw M3×12; 10. Movable clamp; 11. Screw M3×25; 12. Linkage shaft; 13. Screw M2×4; 14. Rotating shaft; 15. Small cover plate; 16. Large cover plate; 17. Countersunk screw M1.6×5; 18. Nut M3; 19. Vibrator assembly; 20. Flat torsion spring; 21. Flat torsion spring; 22. Return torsion spring; 23. Angled torsion spring; 24. Set screw M2×2; 25. Angled torsion spring.

[0056] A is the oscillator; VA is the vibration of oscillator A; B is another oscillator; VB is the vibration of oscillator B; C is the left end point of the waist groove; D is the right end point of the waist groove; J is the left end point of the long waist groove; K is the right end point of the long waist groove; E is the upper end point of the return torsion spring 22; F is the lower end point of the return torsion spring 22; a is the axis of rotation; b is the axis of linkage; WA is the rotation of axis a; WB is the rotation of axis b; M is the straight rod part on one side of the angled shifter torsion spring 25; N is the straight rod part on one side of the flat shifter torsion spring 20; X is the angled groove in the angled shifter. Detailed Implementation

[0057] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, and the advantages of the present invention in the above and / or other aspects will become clearer.

[0058] like Figure 1 As shown, this utility model embodiment provides a passive wireless firing signal generation and acquisition device, including a firing component 1, a vibration sensor 2, and a vibration signal processing module 3.

[0059] Taking mounting on a rifle as an example, Figure 2 This is a schematic diagram of the overall installation of the device.

[0060] like Figure 3 As shown, the firing mechanism 1 is mounted on the weapon's terminal trigger 6, and the vibration sensor 2 and vibration signal processing module 3 are mounted on the barrel. The vibration sensor 2 is rigidly connected to the weapon body, and the vibration signal processing module 3 is electrically connected to the vibration sensor 2.

[0061] In firearms shooting training, in addition to the simple trigger-pulling operation, the system must also be able to perform both single-shot and burst-fire functions. In this embodiment, pulling the trigger to the first firing position generates a firing signal, triggering the simulated weapon's firing mechanism to "fire one bullet." Pulling the trigger all the way down generates a burst-fire signal, triggering the simulated weapon's firing mechanism to "fire bullets continuously," until releasing the trigger sends a stop-fire signal.

[0062] like Figure 4 As shown, the firing component 1 includes a lever 7.

[0063] like Figure 3 As shown, the upper end of lever 7 is close to the rear side of the trigger. When the shooter pulls the trigger 6, lever 7 is pushed, causing it to rotate and complete the corresponding action inside the firing mechanism 1. The vibration signal generated by the firing mechanism 1 being triggered propagates through the weapon body. Vibration sensor 2, rigidly connected to the weapon body, converts the received vibration signal into an electrical signal. Vibration signal processing module 3 filters and extracts the correct trigger signal from the electrical signal output by vibration sensor 2.

[0064] like Figure 4 As shown, the external structure of the firing component 1 mainly includes a lever 7, a housing 8, a movable clamp 10, a linkage shaft 12, a rotating shaft 14, a small cover plate 15, and a large cover plate 16, etc.

[0065] like Figure 4 , Figure 5 As shown, the internal structure of the firing component 1 includes an oscillator assembly 19, a flat torsion spring 20, a flat torsion spring 21, a return torsion spring 22, an angled torsion spring 23, and an angled torsion spring 25. The lever 7 passes sequentially through the linkage shaft 12 and the rotating shaft 14, and is fixed to the rotating shaft 14 with screws 13. The position of the lever 7 is adjustable according to the actual trigger height. Loosening the screws 13 raises or lowers the lever 7; after reaching the appropriate height, tightening the screws 13 secures the lever 7. The linkage shaft 12 and the rotating shaft 14 are mounted on the housing 8. The flat torsion spring 20 and the angled torsion spring 25 are respectively mounted on the flat torsion spring 21 and the angled torsion spring 23, and are fastened to the linkage shaft 12 with set screws 24. The return torsion spring 22 passes through the linkage shaft 12, with one end close to the inner wall of the housing 8 and the other end close to the flat torsion spring 21, achieving linkage between the internal and external structures via the linkage shaft 12.

[0066] like Figure 14As shown, the flat lever 21 and the angled lever 23 are respectively fastened to the linkage shaft 12 with set screws 24. Therefore, the flat lever 21, the angled lever 23, and the linkage shaft 12 are a fixed whole, which can rotate as a whole around axis b, with the rotation angle as shown in WB. The reset torsion spring 22 is sleeved on the linkage shaft 12, with one end E pressing tightly against the inner wall of the housing 8, and the other end F pressing tightly against one side of the flat lever torsion spring 20 in the flat lever 21. This pressure drives the linkage shaft to rotate clockwise, realizing the overall rotation and reset of the linkage shaft when the trigger is not pulled, so that the lever 7 can follow the trigger to the initial position. Figure 3 (As shown).

[0067] Since the angled lever 23 is fastened to the linkage shaft 12 with the set screw 24, it is used in the assembly of the entire device, such as Figure 4 After the design is completed, the linkage shaft 12 passes through the small cover plate 15 and will not fall out due to the fixed limit of the small cover plate 15. Therefore, the rotating shaft 14 below will not fall out either.

[0068] like Figure 14 As shown, M is the straight rod section on one side of the angled torsion spring 25; N is the straight rod section on one side of the flat torsion spring 20. These straight rod sections of the torsion spring can contact the tips of oscillators A and B, respectively, and are used to actuate oscillators A and B when the linkage shaft rotates as a whole. The torsion force of the angled torsion spring 25 is relatively small; a small external force can cause the M section to elastically compress and rotate, such as... Figure 20 The right-hand image shows the deflection and yielding state at point M. The torsion spring 20 of the flat-head lever has a relatively large torque, allowing it to maintain its position even under significant external force. Figure 19 The state of part N in the diagram is that it is in the position of twirling the oscillator.

[0069] Linked structures such as Figure 6 As shown, after removing redundant parts such as the housing and cover, when the trigger is pulled, the lever 7 is pushed and rotates around the rotation axis a, pushing the top groove C point of the linkage shaft 12, causing the linkage shaft 12 to rotate around the rotation axis b. The angled lever 23 and the flat lever 21 are fixed on the linkage shaft 12 and rotate simultaneously with the linkage shaft 12. At this time, the E end of the return torsion spring 22 abuts against the inside of the housing 8 and does not rotate with the linkage shaft 12, while the F end abuts against the flat lever torsion spring 20 and retracts with the rotation of the flat lever 21, rotating to the position shown. Figure 7 The location shown;

[0070] Linked structures such as Figure 7 As shown, after removing redundant parts such as the housing and cover, when the trigger is released, the return spring force of the return torsion spring 22 pushes the flat shift head torsion spring 20, causing the flat shift head 21 and the linkage shaft 12 to rotate around the rotation axis b. The linkage shaft 12 then causes the lever 7 to rotate around the rotation axis a, and returns to its original position. Figure 6 The initial position shown;

[0071] like Figure 15 As shown, there is a waist groove above the left end of the linkage shaft 12 and a long waist groove below it. Point C is on the left side of the upper waist groove, and point D is on the right side. Point J is on the left side of the lower long waist groove, and point K is on the right side. The lever 7 passes through the upper waist groove and can rotate WA about axis a.

[0072] Figure 16 This indicates the rotational state of the linkage shaft 12 when the lever 7 swings. When the lever 7 presses point C, causing the linkage shaft to rotate counterclockwise, the lever 7 reaches its limit position when it contacts the lower long slot point K. Figure 16 The left-hand diagram. When lever 7 presses point D, causing the linkage shaft to rotate clockwise, lever 7 reaches its limit position when it contacts the lower long slot point J, as shown. Figure 16 The image on the right.

[0073] like Figure 8 As shown, in this embodiment, the oscillator group 19 includes two oscillators, A and B, which are cut from a single elastic metal plate. Since oscillators A and B have the same length but different shapes such as thickness, the natural frequencies of oscillators A and B also differ.

[0074] When the trigger is pulled repeatedly, the lever 7 rotates accordingly, corresponding to the first firing position and the second firing position. The small torsion springs on the angled lever 23 and the flat lever 21 inside the firing mechanism 1 respectively actuate oscillators A and B. For example... Figure 17 As shown, corresponding to the first firing position, the straight rod portion M of the angled torsion spring 25 in the angled lever 23 deflects the oscillator A. For example... Figure 18 As shown, corresponding to the second firing position, the straight rod part N of the flat torsion spring 20 in the flat torsion spring 21 deflects the oscillator B.

[0075] like Figure 9 As shown, when the trigger is pulled to the "first firing position", the angled torsion spring 25 rotates upward with the linkage structure, which actuates the oscillator A of the oscillator group 19 and generates a vibration signal.

[0076] like Figure 10 As shown, when the trigger is pulled to the "second firing position", the flat-head torsion spring 20 rotates upward with the linkage structure, which actuates the oscillator B of the oscillator group 19 and generates a vibration signal.

[0077] like Figure 11 As shown, when the trigger is released, under the action of the return torsion spring 22, the flat dial torsion spring 20 rotates with the linkage structure, and once again tugs the oscillator B of the oscillator group 19, generating a vibration signal.

[0078] like Figure 12As shown, when the trigger is released again, under the action of the reset torsion spring 22, the angled torsion spring 25 rotates with the linkage structure and contacts the oscillator A of the oscillator group 19 again. When the angled torsion spring 25 is picked up by the oscillator A, it moves backward along the inclined groove and no longer moves the oscillator A, so no vibration signal is generated.

[0079] exist Figure 19 In the middle, the straight rod N of the flat-head torsion spring 20 actuates the oscillator B, which can perform upshifting or downshifting actions. The left figure shows the upshifting action, and the right figure shows the downshifting action.

[0080] exist Figure 20 In the diagram, the straight rod M of the torsion spring 25 of the angled deflector deflects the oscillator A. This is a unidirectional deflection, meaning it can only deflect upwards, not downwards. The left diagram shows the upward deflection action; part M rests at the bottom of the inclined groove and cannot move back, providing sufficient support to deflect the tip of oscillator A. The right diagram shows the downward deflection state. Because part M of the torsion spring is located within the inclined groove, when the angled deflector 23 rotates downwards along the WB direction, part M is pushed back along the inclined groove by the force of oscillator A until it leaves the tip of oscillator A, thus preventing it from deflecting oscillator A.

[0081] The angled torsion spring 25 can only move the vibrator A in one direction, realizing the action of pulling and releasing the trigger once, generating only one vibration signal, and avoiding two vibration signals. Therefore, it can be used for single-shot firing training of weapons.

[0082] like Figure 13 As shown, the oscillator group in the firing component 1 generates a vibration signal, which is transmitted through the weapon body and converted into an electrical signal by the vibration sensor 2. The signal is then processed by the amplification circuit and frequency detection circuit in the vibration signal processing module 3. If it is a valid firing signal, the simulated weapon launcher 4 is triggered to fire simulated ammunition.

[0083] Vibration sensor 2 can be an accelerometer, such as MPU6500, to collect the vibration signal generated by the firing component 1 and convert it into an electrical signal.

[0084] The vibration signal processing module 3 includes an amplifier circuit and a frequency detection circuit.

[0085] The amplifier circuit is used to amplify the weak vibration electrical signal output by vibration sensor 2. The signal amplification circuit uses a non-inverting amplifier with a magnification factor of 20.

[0086] Since the natural frequency of the oscillator is known, the frequency detection circuit is used to detect the amplitude of the received vibration signal at the known natural frequency.

[0087] One embodiment of the frequency detection circuit for each oscillator is as follows: The input signal is filtered by a narrowband filter. The narrowband filter is a dual operational amplifier active narrowband filter, specifically the AD8676 chip. The center frequency corresponds to the known natural frequency of the oscillator. The bandwidth of the narrowband filter is 100Hz, and the Q value is 5. The filtered signal is then subjected to threshold judgment by a comparator. If the threshold value is greater than 1.5 times the maximum noise signal, it is determined that the oscillator at that natural frequency has been disturbed. The comparator can be an LM393.

[0088] When the oscillator group contains one effective oscillator, the method for determining a valid firing operation is as follows: a dial is installed on the linkage shaft, and this dial moves the corresponding oscillator only once during bidirectional movement. When the trigger is pulled to the weapon's valid firing position, the dial moves the corresponding oscillator; when the vibration signal processing module detects the vibration signal of the oscillator's natural frequency, it indicates that a valid firing operation has been detected.

[0089] When the oscillator assembly contains two effective oscillators, another method for determining an effective firing operation is as follows: Two triggers are installed on the linkage shaft. The first trigger actuates the corresponding oscillator only once during bidirectional movement, while the second trigger actuates the corresponding oscillator twice during bidirectional movement. Pulling the trigger to the first firing position causes the first trigger to actuate oscillator A; continuing to pull the trigger to the second firing position causes the second trigger to actuate oscillator B. The second firing position is the position where the trigger is pulled to fire the weapon for the second time. The first firing position is any position between the trigger's fully released state and the second firing position. The vibration signal processing module first detects the vibration signal at the natural frequency corresponding to oscillator A, and then detects the vibration signal at the natural frequency corresponding to oscillator B, indicating that the trigger has been pulled to the effective firing position; the vibration signal processing module first detects the vibration signal at the natural frequency corresponding to oscillator B, and then detects the vibration signal at the natural frequency corresponding to oscillator B, indicating that the trigger has been released.

[0090] The valid firing signal detected by the vibration signal processing module is used to control the firing of the weapon simulation ammunition, and the detected trigger release signal is used to control the stopping of firing of the weapon simulation ammunition.

[0091] The first and second firing positions can correspond to different weapon firing states, thereby enabling the simulation of two different training states of the weapon launcher (single shot or burst fire).

[0092] In this embodiment, when the trigger is pulled to the first firing position, a vibration trigger signal is generated. When the trigger is released, the torsion spring inside the angled lever can retract along the angled groove, preventing the vibrator A from being actuated; therefore, each pull generates only one trigger signal. The process of the trigger being pulled from the initial position to the first firing position and then back to the initial position can simulate single-shot firing training of the weapon.

[0093] When the trigger of a real weapon is fully pulled, it can fire bullets in bursts. Therefore, in this embodiment, the second firing position is designed as a training position for burst fire. That is, when the trigger is pulled through this position, the simulated weapon launcher will continuously fire lasers until the trigger is released and the weapon passes through the second firing position again, at which point the simulated weapon launcher will stop firing lasers. Because the torsion spring of the flat-head trigger is located in the flat groove, and the selected flat-head trigger torsion spring has a large torque, the torsion spring does not undergo torsional deformation during normal oscillator movement, and its straight rod does not leave one end of the flat groove. Therefore, at the second firing position, when the trigger is pulled and released, the straight rod of the flat-head trigger torsion spring will oscillate oscillator B once. Thus, when the trigger is pulled through the second firing position, a vibration signal of oscillator B is generated, triggering the laser to fire in bursts. When the trigger is released and the weapon passes through the second firing position again, the straight rod of the torsion spring in the flat-head trigger will oscillate oscillator B again, and the generated vibration signal will trigger the operation to stop burst fire.

[0094] This utility model provides a passive wireless firing signal generation and acquisition device. There are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A passive wireless fired signal generating and collecting device, characterized by, Includes firing mechanism, vibration sensor, and vibration signal processing module; The firing component includes a lever, a linkage shaft, a trigger head, an oscillator assembly, and a housing; the linkage shaft and the oscillator assembly are mounted on the housing; the lever is connected to the linkage shaft; the trigger head is fixed on the linkage shaft; the oscillator assembly contains one or more oscillators, each with a different natural frequency, and the oscillators can vibrate at their natural frequencies after being tugged. The linkage shaft can be equipped with one or more dials, each dial being used to actuate a corresponding vibrator; The firing mechanism is mounted near the weapon's trigger; the lever contacts the weapon's trigger. When the weapon trigger is pulled, the lever moves, which in turn moves the dial head via the linkage shaft. During the movement of the dial head, the corresponding vibrator is moved, causing the corresponding vibrator to vibrate at its natural frequency. The vibration signal is transmitted through the weapon body. A single dial can either twitch the corresponding oscillator only once during bidirectional motion, or it can twitch the corresponding oscillator twice during bidirectional motion. The vibration sensor is rigidly connected to the weapon body directly or indirectly. The vibration sensor is electrically connected to the vibration signal processing module.

2. The apparatus according to claim 1, characterized in that, The vibration signal processing module includes an amplification circuit and a frequency detection circuit; After receiving the vibration signal generated by the oscillator and propagated through the weapon body, the vibration sensor outputs it to the vibration signal processing module. After being amplified by the amplifier circuit, the signal is processed by the frequency detection circuit. If the amplitude of the natural frequency of one of the oscillators in the frequency detection result is greater than 1.5 times the maximum noise signal, it is determined that the oscillator has been moved by the corresponding trigger, thereby outputting a corresponding valid firing signal to control the firing or stopping of the simulated weapon launcher.

3. The apparatus according to claim 2, characterized in that, The vibrator assembly is a soundboard, and the vibrator is a vibrating plate; the soundboard contains one or more vibrating plates with different natural frequencies; each vibrating plate can be plucked by a corresponding dial and generate a vibration signal consistent with its natural frequency.

4. The apparatus according to claim 3, characterized in that, When a dial is installed on the linkage shaft, when the trigger is pulled to the effective firing position of the weapon, the dial moves the corresponding vibrator; the vibration signal processing module detects the vibration signal corresponding to the natural frequency of the vibrator, indicating a valid firing operation, and thus outputs the corresponding valid firing signal to control the firing of the simulated weapon launcher.

5. The apparatus according to claim 4, characterized in that, When two levers are installed on the linkage shaft, the two levers are respectively referred to as the first lever and the second lever. When the trigger is pulled to the first firing position of the weapon, the first lever moves the corresponding vibrator A; when the trigger is pulled again to the second firing position of the weapon, the second lever moves the corresponding vibrator B. The signal processing module detects a vibration signal at the natural frequency corresponding to oscillator A, indicating that the trigger has been pulled to an effective firing position of the weapon; the signal processing module detects a vibration signal at the natural frequency corresponding to oscillator B, indicating that the trigger is in a second firing position.

6. The apparatus according to claim 5, characterized in that, The vibration signal processing module first detects the vibration signal at the natural frequency corresponding to oscillator A, and then detects the vibration signal at the natural frequency corresponding to oscillator B, indicating that the trigger has been pulled to the second firing position.

7. The apparatus according to claim 6, characterized in that, The vibration signal processing module first detects the vibration signal at the natural frequency corresponding to oscillator B, and then detects the vibration signal at the natural frequency corresponding to oscillator B, indicating that the trigger has been released.

8. The apparatus according to claim 7, characterized in that, The vibration sensor is rigidly connected to the weapon body in a direct manner, meaning that the vibration sensor can be directly fixed to the weapon.

9. The apparatus according to claim 8, characterized in that, The vibration sensor is indirectly rigidly connected to the weapon body, meaning that the vibration sensor is first fixed inside the simulated weapon launcher housing and rigidly connected to the simulated weapon launcher housing, and the simulated weapon launcher housing is rigidly connected to the weapon body.

10. The apparatus according to claim 9, characterized in that, The effective firing signal detected by the vibration signal processing module is used to control the firing of the simulated weapon launcher, and the detected trigger release signal is used to control the cessation of firing of the simulated weapon launcher.

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