Laser simulation shooting emitter with built-in synchronous image acquisition function

Abstract

A laser simulation shooting emitter with a built-in synchronous image acquisition function is characterized in that an emission and acquisition integrated module is arranged in a conventional laser simulation shooting emitter, so that light spots, on an induction target panel, of laser pulses emitted by a laser head can be synchronously photographed during laser simulation shooting; the invention relates to a shooting and collecting device, which is favorable for realizing on-site replay analysis, and particularly realizes reliable evidence collection of disputes such as objection and anti-proposal possibly occurring in the aspects of ring value scoring, cross and misshooting, off-target penalty and the like in a match, and is characterized by comprising a gun barrel, a shooting and collecting integrated module is arranged in an inner cavity of a muzzle end of the gun barrel, and the shooting and collecting integrated module is connected with the gun barrel. The emission and acquisition integrated module is integrated with a laser head used for emitting laser pulses and a telephoto lens used for carrying out synchronous image acquisition on light spots of the laser pulses on the induction target panel.

Description

Technical Field

[0001] This invention relates to the field of laser simulated shooting technology, and in particular to a laser simulated shooting transmitter with built-in synchronous image acquisition function. Background Technology

[0002] Laser-simulated shooting is a new type of shooting training and talent selection sport that does not require the firing of real bullets. Because it does not fire actual bullets and uses a Class I laser that meets EU safety standards, it offers a very high level of safety. Furthermore, since each shot only fires a laser, the cost of daily shooting training is virtually zero, aside from the cost of purchasing equipment, making training extremely cost-effective. For these reasons, laser-simulated shooting is gaining widespread recognition and adoption in the promotion of shooting sports and the selection of young athletes, playing an increasingly important role. Moreover, many provinces and cities have already included laser-simulated shooting competitions in their provincial games. See the diagram for a typical laser-simulated shooting system structure. Figure 1 .like Figure 1 As shown, the laser simulation shooting system includes a laser simulation shooting transmitter 10, a laser simulation shooting sensing target 20, and a laser simulation shooting system score display and controller 30. The laser simulation shooting transmitter 10 mainly performs firing detection and laser emission functions, including the transmitter body 11, the firing unit 15, the scale 16, the sight 17, and the grip 18. The transmitter body 11 includes a laser emission module 12 and a circuit control module 14, which are used to detect firing actions and control laser emission.

[0003] The laser-simulated shooting target 20 primarily performs the function of spot detection, including the target panel 21 and the spot measurement unit 23. The center of the target panel 21 includes a black circular aiming area 22, which serves as a reference for the athlete's aiming. A target number marker 24 is typically installed above the target panel 21 to facilitate identification of the target by athletes and referees. The laser-simulated shooting system score display and controller 30 performs the score display and control functions of the laser-simulated shooting system.

[0004] In laser-simulated shooting, athletes hold the gun using the grip 18 of the laser-simulated shooting transmitter and aim using the scale 16 and front sight 17 of the laser-simulated shooting transmitter, referencing the black circular aiming area 22 on the panel of the laser-simulated shooting target. At the appropriate aiming moment, the athlete fires using the firing unit 15 of the laser-simulated shooting transmitter. This firing action is detected by the circuit control module 14 of the laser-simulated shooting transmitter, which then outputs a control signal to control the laser emission module 12 to emit a laser pulse 40. The laser pulse 40 emitted by the laser-simulated shooting transmitter forms a laser spot 41 on the panel 21 of the laser-simulated shooting target. This spot is detected and its position is measured by the spot measurement unit 23 of the laser-simulated shooting target. Then, according to the shooting rules, the ring value is calculated and uploaded to the laser-simulated shooting system's score display and controller 30 for score display, thus completing the entire process of aiming, firing, and reporting a shooting action.

[0005] However, with the promotion of laser-simulated shooting competitions, laser-simulated shooting faces the problem of difficulty in obtaining evidence of the shooting. According to the process of conventional laser-simulated shooting, we can see that in laser-simulated shooting, because the emitted laser pulse is fleeting, it cannot leave physical bullet marks or bullet holes, and therefore, it is impossible to leave evidence of the bullet impact.

[0006] In live-fire shooting competitions, to ensure fairness and impartiality, an electronic target evidence sheet 203 is typically placed behind the electronic target 210 during the competition. This sheet records the actual impact point of the fired bullets, allowing for the identification and judgment of any objections raised by athletes regarding scoring, crossfires, or missed shots. (See also...) Figure 4 The electronic target 210 is located between the electronic target panel 202 and the electronic target evidence paper 203. Normally, a live-fire bullet penetrates the electronic target panel 210_1 first, followed by another live-fire bullet penetrating the electronic target evidence paper 210_2. However, for laser simulation shooting, since real bullets are not fired in shooting competitions or training, but rather very short laser pulses, typically around 15ms, evidence collection is difficult. Currently, there is no evidence collection scheme for laser simulation shooting. To ensure the fairness and impartiality of laser simulation shooting competitions, there is an urgent need to provide reliable and stable evidence collection methods for laser simulation shooting competitions and training, in order to resolve potential disputes and protests regarding ring scoring, crossfire errors, and miss penalties. Summary of the Invention

[0007] This invention addresses the deficiencies or shortcomings of existing technologies by providing a laser simulation shooting transmitter with built-in synchronous image acquisition functionality. By incorporating an integrated emission and acquisition module within a conventional laser simulation shooting transmitter, it enables the simultaneous photographing of the laser pulse emitted by the laser head on the target panel during laser simulation shooting. This facilitates on-site review and analysis, and is particularly useful for reliably gathering evidence in cases of disputes such as ring scoring, cross-shot errors, and miss penalties during competitions.

[0008] The technical solution of the present invention is as follows:

[0009] A laser simulation firing transmitter with built-in synchronous image acquisition function includes a barrel, characterized in that an integrated firing and acquisition module is provided in the inner cavity of the muzzle end of the barrel, the integrated firing and acquisition module integrating a laser head for firing laser pulses and a telephoto lens for synchronously acquiring images of the laser pulse spot on a sensing target panel.

[0010] The telephoto lens's field of view covers the entire sensing target panel and the target number marking on its top.

[0011] The duration of the laser pulse is 10ms to 16ms, the pulse head duration of the laser pulse is 0.6ms to 1.2ms, the delay between triggering the firing action and emitting the laser pulse is 6ms to 24ms, the delay between the start of laser pulse emission and the start of synchronous image acquisition is 0.6ms to 1.2ms, and the image exposure duration in synchronous image acquisition is 1.2ms to 3.6ms.

[0012] The laser head is connected to the second terminal on the transmission acquisition circuit board via a transmission control signal connection line. The telephoto lens is connected to the CMOS image sensor on the transmission acquisition circuit board. The first terminal on the transmission acquisition circuit board is connected to the main control module.

[0013] The main control module is connected to the firing module via a firing level signal line and to the WiFi module via a data transmission line. The WiFi module is connected to the laser simulation shooting system controller via WiFi wireless connection.

[0014] The main control module is connected to the first terminal on the emission acquisition circuit board via a laser emission control signal line, a CMOS exposure control signal line, and an image data transmission line.

[0015] The integrated transmission and acquisition module has a pointing adjustment base. The front end of the pointing adjustment base is cylindrical and the rear end is rectangular. The rectangular body houses the transmission and acquisition circuit board, and the cylindrical body houses the laser head and telephoto lens of the integrated transmission and acquisition module.

[0016] Both the WiFi module and the main control module are located inside the barrel, and a battery is located below the WiFi module.

[0017] The front end of the barrel is equipped with a front sight, the rear end with a scale, and the grip and firing module are located below the rear end.

[0018] The technical effects of this invention are as follows: This invention provides a laser simulation shooting transmitter with built-in synchronous image acquisition function. By adding an image acquisition module and synchronous control circuit inside a conventional laser simulation shooting transmitter, it synchronously acquires images of the light spot of the laser pulse emitted by the laser simulation shooting transmitter on the sensing target panel. This enables on-site review and analysis, especially in competitions where it provides reliable evidence for disputes such as ring score scoring, cross-shot errors, and miss-target penalties, which helps to resolve disputes and promote the smooth completion of the competition. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a laser simulation shooting system in the existing technology.

[0020] Figure 2 This is a schematic diagram of the installation of evidence collection paper during live-fire shooting in existing technology.

[0021] Figure 3 This is a schematic diagram of a laser simulation firing transmitter with built-in synchronous image acquisition function, which implements the present invention.

[0022] Figure 4 yes Figure 3 A schematic diagram of the integrated transmission and acquisition module.

[0023] Figure 5 yes Figure 3 A schematic diagram of the connection structure between the main control module, the integrated transmission and acquisition module, the firing module, and the WiFi module.

[0024] Figure 6 This is a schematic diagram of the firing signal and control signal waveforms of a laser simulation firing transmitter with built-in synchronous image acquisition function during operation, according to the present invention. Figure 6This includes a firing level signal, a laser emission control signal, and a CMOS exposure control signal (CMOS, Complementary Metal-Oxide-Semiconductor). The high level in the firing level signal appears after the firing action (the duration of the firing level signal covers the duration T2 of the laser emission control signal, i.e., the pulse width; the duration T2 of the laser emission control signal covers the duration T4 of the CMOS exposure control signal, i.e., the exposure length). The high level of the laser emission control signal appears after T1, where T1 is the firing delay (i.e., the time from the firing action to the rising edge of the high level of the laser emission control signal). The high level of the CMOS exposure control signal appears after T3, where T3 is the exposure delay (i.e., the time from the rising edge of the high level of the laser emission control signal to the rising edge of the high level of the CMOS exposure control signal).

[0025] Figure 7 This is a schematic diagram of a laser pulse waveform. Figure 7 The laser pulse length is 15.6 ms (i.e., the duration of the laser pulse), and the pulse head length is 0.6 to 1.2 ms.

[0026] Figure 8 This is a schematic diagram illustrating the working status of a laser simulation firing transmitter with built-in synchronous image acquisition function according to the present invention. Figure 8 The medium-to-long telephoto lens's field of view covers the target surface of the sensor target and the target number markings above the sensor target.

[0027] Figure 9 yes Figure 3 A schematic diagram of the direction of the integrated transmission and acquisition module. Figure 9 The direction of the integrated transmission and acquisition module, the direction of laser head emission, and the direction of the optical axis of the telephoto lens are aligned.

[0028] Figure 10 This refers to a schematic diagram of the adjustable base structure. Figure 10 The front end is cylindrical, and the rear end is rectangular. The rectangular body houses the circuit board, and the cylindrical body houses the integrated transmission and acquisition module.

[0029] Figure 11 This is a schematic diagram of the direction of a laser simulation firing transmitter with built-in synchronous image acquisition function according to the present invention. Figure 11 The direction of the laser emitter's barrel is consistent with that of the integrated emission and acquisition module.

[0030] The reference numerals in the attached figures are explained as follows: 10 - Laser simulation firing system transmitter; 11 - Laser simulation firing system transmitter body; 12 - Laser transmitter; 14 - Laser simulation firing system transmitter firing detection and laser transmitter control device; 15 - Laser simulation firing system transmitter firing device; 16 - Laser simulation firing system transmitter scale; 17 - Laser simulation firing system transmitter front sight; 18 - Laser simulation firing system transmitter grip; 20 - Laser simulation firing system sensor target; 21 - Laser simulation firing system sensor target panel; 22 - Laser simulation firing system sensor target 23 - Black circular aiming area on the panel; 24 - Laser simulation shooting system target spot measuring device; 30 - Laser simulation shooting system score display and controller; 40 - Laser pulse emitted by the laser emitter of the laser simulation shooting transmitter; 41 - Laser pulse formed on the target panel by the laser pulse emitted by the laser emitter of the laser simulation shooting transmitter; 201 - Electronic target; 202 - Electronic target panel; 203 - Electronic target evidence paper; 210_1 - Bullet penetrating the electronic target panel during live-fire shooting; 210_2 - Bullet penetrating the electronic target evidence paper during live-fire shooting.

[0031] A - Grip; B - Scepter; C - Firing Module; D - WiFi Module; E - Battery; F - Barrel; G - Main Control Module; H - Pointing Adjustment Base; I - Launch and Acquisition Integrated Module; J - Front Sight; K - Laser Simulation Shooting System Controller; G1 - Laser Launch Control Signal Line; G2 - CMOS Exposure Control Signal Line; G3 - Image Data Transmission Line; G4 - Firing Level Signal Line; G5 - Data Transmission Line; I1 - Laser Head; I2 - Telephoto Lens; I3 - CMOS Image Sensor; I4 - Launch and Acquisition Circuit Board; I5 - First Terminal; I6 - Second Terminal; I7 - Launch Control Signal Connection Line; K1 - WiFi Wireless Connection. Detailed Implementation

[0032] The following is in conjunction with the attached diagram ( Figures 3-11 The present invention will be described below.

[0033] Figure 3 This is a schematic diagram of a laser simulation firing transmitter with built-in synchronous image acquisition function, which implements the present invention. Figure 4 yes Figure 3 A schematic diagram of the integrated transmission and acquisition module. Figure 5 yes Figure 3 A schematic diagram of the connection structure between the main control module, the integrated transmission and acquisition module, the firing module, and the WiFi module. Figure 6 This is a schematic diagram of the firing signal and control signal waveforms of a laser simulation firing transmitter with built-in synchronous image acquisition function during operation, according to the present invention. Figure 7 This is a schematic diagram of a laser pulse waveform. Figure 8 This is a schematic diagram illustrating the working status of a laser simulation firing transmitter with built-in synchronous image acquisition function according to the present invention. Figure 9 yes Figure 3 A schematic diagram of the direction of the integrated transmission and acquisition module. Figure 10 This refers to a schematic diagram of the adjustable base structure. Figure 11 This is a schematic diagram illustrating the pointing of a laser simulation firing transmitter with built-in synchronous image acquisition function according to the present invention. (Reference) Figures 3 to 11 As shown, a laser simulation shooting transmitter with built-in synchronous image acquisition function includes a barrel F. An integrated emission and acquisition module I is provided in the inner cavity of the muzzle end of the barrel F. The integrated emission and acquisition module I integrates a laser head I1 for emitting laser pulses and a telephoto lens I2 for synchronously acquiring images of the laser pulse spot on the sensing target panel (i.e., the panel 21 of the sensing target of the laser simulation shooting system) (i.e., the spot 41 formed on the sensing target panel by the laser pulse emitted by the laser emitter of the laser simulation shooting transmitter).

[0034] The field of view of the telephoto lens I2 covers the entire sensing target panel and the target number marker 24 set on its top. The duration of the laser pulse is 15.6 ms, the pulse head duration of the laser pulse is 0.6 ms to 1.2 ms, the delay between the trigger pull and the laser pulse emission is 6 ms to 24 ms, the delay between the start of laser pulse emission and the start of synchronous image acquisition is 0.6 ms to 1.2 ms, and the image exposure duration during synchronous image acquisition is 1.2 ms to 3.6 ms.

[0035] The laser pulse emission delay T1, laser pulse duration T2, image acquisition delay T3, and image exposure time T4 are precisely controlled. The laser pulse duration T2 is 10ms to 16ms, the laser pulse head duration is 0.6ms to 1.2ms, corresponding to a delay T3 of 0.6ms to 1.2ms between the start of laser pulse emission and the start of synchronous image acquisition. The delay T1 between the trigger pull and the laser pulse emission is 6ms to 24ms, and the image exposure time T4 during synchronous image acquisition is 1.2ms to 3.6ms, which usually corresponds to the laser-sensing target image exposure time.

[0036] The laser head I1 is connected to the second terminal I6 on the transmission acquisition circuit board I4 via the transmission control signal connection line I7. The telephoto lens I2 is connected to the CMOS image sensor I3 on ​​the transmission acquisition circuit board I4. The first terminal I5 on the transmission acquisition circuit board I4 is connected to the main control module G. The main control module G is connected to the firing module C via the firing level signal line G4 and to the WiFi module D via the data transmission line G5. The WiFi module D is connected to the laser simulation shooting system controller K via WiFi wireless connection K1. The main control module G is connected to the first terminal I5 on the transmission acquisition circuit board I4 via the laser transmission control signal line G1, the CMOS exposure control signal line G2, and the image data transmission line G3.

[0037] The integrated transmission and acquisition module I has a pointing adjustment base H. The front end of the pointing adjustment base H is cylindrical and the rear end is rectangular. The rectangular body houses the transmission and acquisition circuit board I4, and the cylindrical body houses the laser head I1 and the telephoto lens I2 in the integrated transmission and acquisition module.

[0038] Both the WiFi module D and the main control module G are housed within the cavity of the barrel F. A battery E is located below the WiFi module D. A front sight J is located at the top of the front end of the barrel F, a scale B is located at the top of the rear end, and a grip A and a firing module C are located below the rear end.

[0039] The laser simulation firing transmitter of the present invention has a built-in synchronous image acquisition function, such as Figure 3 As shown, it consists of the following main parts: scale B, front sight J, grip A, barrel F, battery E, pointing adjustment base H, firing and acquisition integrated module I, main control module G, WiFi module D, and firing module C. They are assembled together to form a laser emitter.

[0040] Internal structure of the integrated transmission and acquisition module I Figure 4 As shown, the entire assembly is a single machined metal structure, internally consisting of two parallel cavities. The upper cavity houses the laser head I1, which emits laser pulses, while the lower cavity houses the telephoto lens I2, used for optical imaging of a target surface 10 meters away. The telephoto lens I2 is positioned directly behind a CMOS image sensor chip (i.e., CMOS image sensor I3), thus acquiring images of the target surface at 10 meters. The CMOS image sensor I3 and its corresponding control circuitry are soldered onto a circuit board (i.e., the transmission and acquisition circuit board I4) at the rear of the integrated transmission and acquisition module. The circuit board and the machined structure are sealed, forming a sealed internal structure. The laser head I1 is connected to the circuit board via a terminal block (i.e., the second terminal block I6) and a transmission control signal connection line I7.

[0041] Connections between the main control module G and several other main modules Figure 5 As shown. The main control module G is connected to the integrated firing and acquisition module I via three signal lines: laser emission control signal line G1, CMOS exposure control signal line G2, and image data transmission line G3. Laser emission control signal line G1 controls the laser head I1 to emit laser pulses; CMOS exposure control signal line G2 controls the CMOS image sensor I3 to begin exposure and acquire image data; after acquisition, the CMOS image sensor I3 transmits the target image data to the main control module G via image data transmission line G3. The main control module G then sends the data to the laser simulation shooting system controller K via WiFi module D for calculating ring values ​​and displaying scores. The main control module G is connected to the firing module C via firing level signal line G4. Its operation process is as follows... Figure 6 As shown, when the athlete pulls the trigger to start shooting, the firing module generates a high-level firing signal. Upon detecting the rising edge of this high-level signal, the main control module starts a timer. After a delay of T1 milliseconds, it sends a laser emission control signal to the laser head, controlling the laser head to emit a laser pulse. The duration of the laser emission control signal is T2 milliseconds, which is the duration of the laser pulse, typically 10-16 ms. Simultaneously, after a timer delay of T3 milliseconds, it sends a CMOS exposure control signal to the CMOS image sensor to initiate exposure. The duration of the CMOS exposure control signal, T4, determines the exposure time. After exposure, the CMOS image sensor acquires image data and sends it to the main control module.

[0042] A crucial aspect is that these four times, T1 / T2 / T3 / T4, must be precisely controlled by timers to simultaneously capture the laser pulse's residue on the target surface for evidence collection. T1 is the delay between trigger pull and laser emission, corresponding to the time from trigger pull to bullet ejection in a live-fire gun, typically ranging from 6ms to 24ms. T2 is the laser pulse duration, or pulse length, defined by competition equipment standards; in modern pentathlon, the specified length is 15.6ms. Figure 7 As shown; the T3 delay is crucial for synchronous image acquisition. This delay is the time from the start of laser pulse emission to the start of acquisition by the CMOS image sensor, corresponding to the laser pulse head length, and is typically 0.6–1.2 ms. T4 is the image exposure time, corresponding to the pulse waveform signal following the laser pulse head, and is generally 1.2–3.6 ms. This ensures that the laser simulation firing transmitter synchronously acquires the image of the spot left by the laser pulse head waveform hitting the target surface, enabling the verification of the laser simulation firing target reporting results.

[0043] The telephoto lens of the integrated launch and acquisition module in this laser simulation firing transmitter needs to be appropriately selected. The lens's field of view must include the target surface at a distance of 10 meters and the target location markings above the target. Figure 8 As shown.

[0044] like Figure 9 As shown, this integrated transmission and acquisition module ensures that the laser head's emission direction and the telephoto lens's optical axis are parallel through machined parallel cavities and assembly processes, with a parallelism error of less than 2mm at a distance of 10 meters. The laser head's emission direction and the telephoto lens's optical axis represent the orientation of the integrated transmission and acquisition module.

[0045] The integrated transmitter and acquisition module is installed in a pointing adjustment base. To facilitate pointing adjustment of the module within this base, its machining shape is asymmetrical, with a large tail to accommodate the circuit board and a cylindrical front. Figure 10 As shown, it can also be made into a long rectangular shape, as long as it is convenient to install on the pointing adjustment base for pointing adjustment.

[0046] Through this directional adjustment, the laser emission direction of the integrated transmission and acquisition module is ultimately aligned with the optical axis of the telephoto lens and the direction of the gun barrel. Figure 11 As shown.

[0047] Contents not described in detail in this specification are existing technologies known to those skilled in the art. It is hereby indicated that the above description is intended to help those skilled in the art understand the present invention, but does not limit the scope of protection of the present invention. Any equivalent substitutions, modifications, improvements, and / or simplifications of the above descriptions that do not depart from the essence of the present invention fall within the scope of protection of the present invention.

Claims

1. A laser simulation firing transmitter with built-in synchronous image acquisition function, comprising a barrel, characterized in that, An integrated firing and acquisition module is provided in the inner cavity of the muzzle end of the gun barrel. The integrated firing and acquisition module integrates a laser head for firing laser pulses and a telephoto lens for synchronously acquiring images of the light spot of the laser pulse on the sensing target panel.

2. The laser simulation firing transmitter with built-in synchronous image acquisition function according to claim 1, characterized in that, The telephoto lens's field of view covers the entire sensing target panel and the target number marking on its top.

3. The laser simulation firing transmitter with built-in synchronous image acquisition function according to claim 1, characterized in that, The duration of the laser pulse is 10ms to 16ms, the pulse head duration of the laser pulse is 0.6ms to 1.2ms, the delay between the start of laser pulse emission and the start of synchronous image acquisition is 0.6ms to 1.2ms, the delay between the trigger pull and the laser pulse emission is 6ms to 24ms, and the image exposure duration in synchronous image acquisition is 1.2ms to 3.6ms.

4. The laser simulation firing transmitter with built-in synchronous image acquisition function according to claim 1, characterized in that, The laser head is connected to the second terminal on the transmission acquisition circuit board via a transmission control signal connection line. The telephoto lens is connected to the CMOS image sensor on the transmission acquisition circuit board. The first terminal on the transmission acquisition circuit board is connected to the main control module.

5. The laser simulation firing transmitter with built-in synchronous image acquisition function according to claim 4, characterized in that, The main control module is connected to the firing module via a firing level signal line and to the WiFi module via a data transmission line. The WiFi module is connected to the laser simulation shooting system controller via WiFi wireless connection.

6. The laser simulation firing transmitter with built-in synchronous image acquisition function according to claim 5, characterized in that, The main control module is connected to the first terminal on the emission acquisition circuit board via a laser emission control signal line, a CMOS exposure control signal line, and an image data transmission line.

7. The laser simulation firing transmitter with built-in synchronous image acquisition function according to claim 1, characterized in that, The integrated transmission and acquisition module has a pointing adjustment base. The front end of the pointing adjustment base is cylindrical and the rear end is rectangular. The rectangular body houses the transmission and acquisition circuit board, and the cylindrical body houses the laser head and telephoto lens of the integrated transmission and acquisition module.

8. The laser simulation firing transmitter with built-in synchronous image acquisition function according to claim 5, characterized in that, Both the WiFi module and the main control module are located inside the barrel, and a battery is located below the WiFi module.

9. The laser simulation firing transmitter with built-in synchronous image acquisition function according to claim 1, characterized in that, The front end of the barrel is equipped with a front sight, the rear end with a scale, and the grip and firing module are located below the rear end.

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