Clamping force online monitoring gun stock for shooting training

Abstract

The invention discloses a clamping force on-line monitoring gunstock for shooting training, which comprises a gunstock body, a detection data synchronization unit is arranged in the gunstock body, the detection data synchronization unit comprises a processor, the processor is connected with an ADC module, and the ADC module is connected with the gunstock body. The ADC module is provided with at least one external pressure data acquisition channel, at least one internal pressure data acquisition channel and a waveform acquisition channel, the external pressure data acquisition channels are connected with the external pressure sensors in a one-to-one correspondence manner, and the internal pressure data acquisition channels are connected with the internal pressure sensors in a one-to-one correspondence manner; the induction coil is connected with the waveform acquisition channel; the processor is connected with a wireless module, and the wireless module is in data transmission with peripheral equipment. The device has the beneficial effects that the shooting posture and strength stability of a trainer can be monitored on line, and the shooting posture and action accuracy of the trainer is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gun stock brackets, in particular to a gun stock for online monitoring of clamping force for shooting training. Background Art

[0002] Live-fire shooting training is an important process for improving firearms skills and combat capabilities, and aims to cultivate the shooter's accuracy, speed and reaction ability.

[0003] The more accurate the shooting posture and the higher the strength stability during the shooting process, the better the force method and effect will be. Therefore, shooting posture and strength stability are important factors in evaluating the shooting ability of the trainees.

[0004] Currently, the effectiveness of live-fire training training is primarily evaluated through manual observation and statistical analysis of shooting results. These methods suffer from a single evaluation dimension and high subjectivity. Traditional evaluation methods focus primarily on accuracy and shooting time, neglecting crucial factors such as shooting posture and force stability during the shooting process. This is due to a lack of tools for quantitatively assessing shooting posture and force stability, as well as a lack of devices for online monitoring of these assessments. Consequently, incorporating shooting posture and force stability into the evaluation of live-fire training effectiveness is difficult, resulting in a one-sided evaluation that fails to fully reflect the trainees' shooting abilities and existing challenges. Summary of the Invention

[0005] The purpose of the present invention is to provide a clamping force online monitoring gunstock for shooting training, which can quantitatively analyze the force application method and effect of the trainee when shooting, generate evaluation results of shooting posture and force stability, and send the evaluation results to an external device so that the evaluation results can be fed back to the coach and trainee in a timely manner.

[0006] The key feature of the clamping force online monitoring gunstock for shooting training is that it comprises a gunstock body and a shoulder pad, wherein the gunstock body and the shoulder pad are movably connected;

[0007] The buttstock body is provided with a mounting groove, a circle of mounting bosses is fixed to the sidewall of the mounting groove, at least one external pressure sensor is mounted on the outer side of the mounting bosses, and the external pressure sensor faces the opening of the mounting groove, and at least one internal pressure sensor is mounted on the inner side of the mounting bosses, and the internal pressure sensor faces the bottom of the mounting groove;

[0008] An external pressure block covering all external pressure sensors is provided on the outside of the mounting boss, and an internal pressure block covering all internal pressure sensors is installed on the inside of the mounting boss. The external pressure block and the internal pressure block are connected by a connecting rod, and an external pressure spring abuts against the external pressure block and the shoulder pad, and an internal pressure spring abuts against the internal pressure block and the bottom of the mounting groove;

[0009] A coil mounting groove is formed on the side wall of the mounting boss, an induction coil is mounted in the coil mounting groove, and the connecting rod passes through the induction coil; a magnetic core mounting groove is formed on the connecting rod, and a magnetic core is fixed in the magnetic core mounting groove;

[0010] A detection data synchronization unit is installed in the gunstock body, the detection data synchronization unit includes a processor, the processor is connected to an ADC module, the ADC module is provided with at least one external pressure data acquisition channel, at least one internal pressure data acquisition channel and a waveform acquisition channel, and the external pressure data acquisition channel is connected to the external pressure sensor in a one-to-one correspondence, the internal pressure data acquisition channel is connected to the internal pressure sensor in a one-to-one correspondence, and the induction coil is connected to the waveform acquisition channel;

[0011] The processor is connected to a wireless module, and the wireless module performs data transmission with the peripheral device.

[0012] The trainee's shoulders squeeze the shoulder pad to deform the external pressure spring, push the external pressure block to the bottom of the installation groove, and press the external pressure sensor. The external pressure sensor detects the external pressure and sends the external pressure to the processor through the ADC module.

[0013] After shooting, the recoil pushes the shoulder backward, the internal pressure spring is released, and the internal pressure block is pushed toward the internal pressure sensor. When the internal pressure block contacts the internal pressure sensor, the internal pressure sensor detects the internal pressure and sends the internal pressure to the processor through the ADC module.

[0014] The magnetic core moves inside the induction coil following the connecting rod, thereby generating electromagnetic induction. The induction coil outputs an electromagnetic induction signal and sends the electromagnetic induction signal corresponding to the external pressure to the processor through the ADC module.

[0015] In summary, external pressure, internal pressure and electromagnetic induction signals can quantitatively analyze the force mode and effect, thereby indirectly conducting a quantitative evaluation of shooting posture and force stability.

[0016] The processor evaluates the shooting posture and force stability based on the above-mentioned external pressure, internal pressure, and electromagnetic induction signals, generates an evaluation result, and sends the external pressure, internal pressure, electromagnetic induction signal, and evaluation result to an external display device through a wireless module, thereby realizing online monitoring of the external pressure, internal pressure, electromagnetic induction signal, and evaluation result, and providing timely feedback of the evaluation result to coaches and trainers.

[0017] Furthermore, at least two shoulder pad limiting cavities are symmetrically arranged beside the mounting groove, and a limiting plate is fixed in the shoulder pad limiting cavity, which divides the shoulder pad limiting cavity into an inner chamber and an outer channel. A shoulder pad connecting block is provided in the shoulder pad limiting cavity, and the main body end of the shoulder pad connecting block falls into the inner chamber, and the outer end of the shoulder pad connecting block extends out of the outer channel and is fixedly connected to the shoulder pad, and a guide spring is mounted on the outer end, and one end of the guide spring abuts against the shoulder pad, and the other end of the guide spring extends into the outer channel and abuts against the limiting plate.

[0018] The trainee's shoulder squeezes the shoulder pad, compressing the guide spring. This causes the external pressure spring to deform, pushing the external pressure block toward the bottom of the mounting slot and pressing the external pressure sensor. When the shoulder pad is firmly in contact with the stock, the trainee completes the preparatory movement of pressing their shoulder against the stock, and the external pressure sensor detects maximum external pressure P1.

[0019] After firing, recoil pushes the shoulder backward, the guide spring pushes the shoulder pad away from the stock body, and the internal pressure spring releases, pushing the internal pressure block toward the internal pressure sensor. When the internal pressure block contacts the internal pressure sensor, the internal pressure sensor detects an internal pressure of P2, indicating a failure in shooting stability.

[0020] At the same time, the processor records the time from the disappearance of the maximum external pressure P1 to the reappearance of the maximum external pressure P1 as the adjustment time t. The shorter the adjustment time t, the faster the trainee adjusts the shooting posture and the higher the shooting stability.

[0021] Based on the above maximum external pressure P1, internal pressure and adjustment time t, the trainee's shooting can be graded and judged:

[0022] Grade A (full score): The maximum external pressure P1 exists throughout the entire shooting process, and the adjustment time t is equal to 0;

[0023] Grade B (qualified): During the entire shooting process, internal pressure P2 does not appear, and the adjustment time t is greater than 0;

[0024] Grade C (Unqualified): Internal pressure P2 appears during the entire shooting process.

[0025] In summary, external pressure, internal pressure and adjustment time can provide quantitative feedback on the force mode and effect from three dimensions: before shooting, during shooting and after shooting. At the same time, the B level is scored through electromagnetic induction signals and adjustment time t, so as to more accurately quantify the force mode and effect.

[0026] Furthermore, each of the external pressure data acquisition channels is connected to the external pressure sensor via an external pressure acquisition front-end circuit;

[0027] The external pressure acquisition front-end circuit includes a comparator 1, a resistor R9 connected in series with the positive phase input terminal of the comparator 1 to the positive electrode of the external pressure sensor, a resistor R10 connected in series with the negative phase input terminal of the comparator 1 to the negative electrode of the external pressure sensor, a positive phase input terminal of the comparator 1 to the front end of the resistor R11, a rear end of the resistor R11 to the output terminal of the comparator 1, and a resistor R12 connected in series with the output terminal of the comparator 1 to the external pressure data acquisition channel;

[0028] The positive power supply terminal of the comparator 1 is connected to the power supply VCC, and the negative power supply terminal of the comparator 1 is grounded.

[0029] Furthermore, each of the internal pressure data acquisition channels is connected to the internal pressure sensor via an internal pressure acquisition front-end circuit;

[0030] The internal pressure acquisition front-end circuit includes a comparator 2, a resistor R13 connected in series with the positive input terminal of the comparator 2 to the positive electrode of the internal pressure sensor, a resistor R14 connected in series with the negative input terminal of the comparator 2 to the negative electrode of the internal pressure sensor, a positive input terminal of the comparator 2 to the front end of a resistor R15, a rear end of the resistor R15 to the output terminal of the comparator 2, and a resistor R16 connected in series with the output terminal of the comparator 2 to the internal pressure data acquisition channel;

[0031] The positive power supply terminal of the comparator 2 is connected to the power supply VCC, and the negative power supply terminal of the comparator 2 is grounded.

[0032] Furthermore, the waveform acquisition channel is connected to the induction coil via a waveform acquisition front-end circuit;

[0033] The waveform acquisition front-end circuit includes a comparator 3, a positive input terminal of the comparator 3 is connected to the rear end of the inductor C1, a front end of the inductor C1 is connected to the first output terminal of the induction coil, a reverse input terminal of the comparator 3 is connected to the front end of the resistor R3, a rear end of the resistor R3 is connected to the front end of the resistor R19, a rear end of the resistor R19 is connected to the output terminal of the comparator 3, a rear end of the resistor R3 is connected to the output terminal of the comparator 3, the output terminal of the comparator 3 is connected to the front end of the resistor R2, a rear end of the resistor R2 is connected to the reverse input terminal of the comparator 5, a reverse input terminal of the comparator 5 is connected to the front end of the resistor R1, a rear end of the resistor R1 is connected to the output terminal of the comparator 5, and the output terminal of the comparator 5 is connected to the waveform acquisition channel;

[0034] The waveform front-end acquisition circuit also includes a comparator 4, a positive input end of the comparator 4 is connected to the rear end of the inductor C2, the front end of the inductor C2 is connected to the second output end of the induction coil, a reverse input end of the comparator 4 is connected to the front end of the resistor R5, the rear end of the resistor R5 is connected to the front end of the resistor R20, the rear end of the resistor R20 is connected to the output end of the comparator 4, the rear end of the resistor R5 is connected to the output end of the comparator 4, the rear end of the resistor R5 is further connected in series with a resistor R7 connected to the rear end of the resistor R3, the output end of the comparator 4 is connected to the front end of the resistor R4, the rear end of the resistor R4 is connected to the positive input end of the comparator 5, and the positive input end of the comparator 5 is connected in series with a resistor R6 to be grounded.

[0035] The waveform acquisition front-end circuit is a differential amplifier circuit that can amplify the electromagnetic induction signal output by the induction coil and has a good suppression effect on the common mode signal, effectively suppressing the occurrence of zero drift.

[0036] Furthermore, the first input terminal group of the processor is connected to the output terminal group of the ADC module.

[0037] Furthermore, the data receiving end of the processor is connected to the data sending end of the wireless module, and the data sending end of the processor is connected to the data receiving end of the wireless module.

[0038] Furthermore, the sum of the elastic forces of all the guide springs is greater than the sum of the elastic forces of the external pressure spring and the internal pressure spring.

[0039] Furthermore, all of the shoulder pad limiting cavities are arranged around the mounting slot;

[0040] The shoulder pad connecting block has a T-shaped cross section, wherein the horizontal arm is the main body end and the vertical arm is the extension end.

[0041] Furthermore, the shoulder pad is tightly fitted to the buttstock body to form a complete buttstock.

[0042] Beneficial effects: External pressure, internal pressure and adjustment time can provide quantitative feedback on the force mode and effect from three dimensions: before, during and after shooting. At the same time, the B level is scored through electromagnetic induction signals and adjustment time t, so as to more accurately quantify the force mode and effect, and indirectly conduct quantitative evaluation of shooting posture and force stability.

[0043] The processor evaluates the shooting posture and force stability based on the external pressure, internal pressure, adjustment time and electromagnetic induction signal, generates an evaluation result, and sends the external pressure, internal pressure, adjustment time, electromagnetic induction signal and evaluation result to an external display device through a wireless module, thereby realizing online monitoring of the external pressure, internal pressure, adjustment time, electromagnetic induction signal and evaluation result, and providing timely feedback of the evaluation results to coaches and trainers.

[0044] In summary, in the evaluation of live-fire shooting training effects, the present invention can reliably evaluate the trainee's shooting posture and strength stability on the basis of shooting hit rate and shooting time, thereby comprehensively evaluating the trainee's shooting ability and reflecting the trainee's shooting ability and existing problems in multiple dimensions. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a cross-sectional diagram of the free state of the buttstock for online monitoring of the clamping force for shooting training;

[0046] Figure 2 for Figure 1 The enlarged schematic diagram of part a;

[0047] Figure 3 is a cross-sectional diagram of the pressure piece;

[0048] Figure 4 A cross-sectional diagram of the gunstock preparation state for online monitoring of the clamping force for shooting training;

[0049] Figure 5 is a circuit diagram of the processor;

[0050] Figure 6 This is the circuit diagram of the ADC module;

[0051] Figure 7 This is the circuit diagram of the wireless module;

[0052] Figure 8 It is the front-end circuit for collecting external pressure;

[0053] Figure 9 It is the front-end circuit for collecting internal pressure;

[0054] Figure 10 It is the front-end circuit for waveform acquisition. DETAILED DESCRIPTION

[0055] The specific implementation manner and working principle of the present invention will be further described in detail below with reference to the accompanying drawings.

[0056] like Figure 1 、 2As shown, a clamping force online monitoring stock for shooting training comprises a stock body 1 and a shoulder pad 2, wherein the stock body 1 is provided with a mounting slot 11 and at least two shoulder pad limiting cavities 13 symmetrically arranged beside the mounting slot 11, and all the shoulder pad limiting cavities 13 are arranged around the mounting slot 11; a limiting plate 131 is fixed in the shoulder pad limiting cavity 13, and the limiting plate 131 is connected to the stock body 1 by at least two limiting bolts 81; the limiting plate 131 divides the shoulder pad limiting cavity 13 into an inner chamber and an outer channel, and a shoulder pad is provided in the shoulder pad limiting cavity 13. The shoulder pad connecting block 8 has a T-shaped cross-section, wherein the horizontal arm is the main body end and the vertical arm is the extended end; the main body end falls into the inner chamber, and the inner chamber limits the main body end to prevent the shoulder pad connecting block 8 from separating from the butt body 1. The extended end extends out of the outer channel and is fixedly connected to the shoulder pad 2, and the extended end is connected to the shoulder pad 2 through a shoulder pad bolt 21; a guide spring 9 is mounted on the extended end, and one end of the guide spring 9 abuts against the shoulder pad 2, and the other end of the guide spring 9 extends into the outer channel and abuts against the limiting plate 131.

[0057] A circle of mounting bosses 12 are fixed to the sidewalls of the mounting groove 11. The mounting bosses 12 are connected to the buttstock body 1 via at least two boss bolts 121. Two external pressure sensors 5a are mounted on the outside of the mounting bosses 12, with all external pressure sensors 5a opening toward the mounting groove 11. Two internal pressure sensors 5b are mounted on the inside of the mounting bosses 12, with all internal pressure sensors 5b facing the bottom of the mounting groove 11.

[0058] like Figure 2 、 3 As shown, a pressure piece is installed in the installation groove 11, and the pressure piece is composed of an external pressure block 4a, an internal pressure block 4b, a connecting rod 4c and a pressure bolt 4d. The cross-section of the pressure piece is "I"-shaped, and its two horizontal arms are the external pressure block 4a and the internal pressure block 4b, and the vertical arm is the connecting rod 4c. The pressure bolt 4d passes through the external pressure block 4a and the connecting rod 4c in sequence, and is threadedly connected to the internal pressure block 4b, and the pressure bolt 4d is also threadedly connected to the connecting rod 4c.

[0059] The outer pressure block 4 a and the inner pressure block 4 b have the same diameter, and match the diameter of the installation groove 11 .

[0060] like Figure 2 As shown, the external pressure block 4a is located outside the mounting boss 12 and covers all external pressure sensors 5a; the internal pressure block 4b is located inside the mounting boss 12 and covers all internal pressure sensors 5b;

[0061] like Figure 2As shown, an external pressure spring 6a is in contact with the external pressure block 4a and the shoulder pad 2 , and an internal pressure spring 6b is in contact with the internal pressure block 4b and the bottom of the mounting groove 11 .

[0062] In addition to the above structure, one end of the external pressure spring 6a can be bonded to the external pressure block 4a, and the other end of the external pressure spring 6a can be abutted against the shoulder pad 2; one end of the internal pressure spring 6b can be bonded to the internal pressure block 4b, and the other end of the internal pressure spring 6b can be abutted against the bottom of the mounting groove 11.

[0063] In the above structure, the sum of the elastic forces of all the guide springs 9 is greater than the sum of the elastic forces of the outer pressure spring 6 a and the inner pressure spring 6 b.

[0064] like Figure 2 As shown, a coil mounting groove 121 is formed on the side wall of the mounting boss 12, in which the induction coil 3 is mounted, and the connecting rod 4c passes through the induction coil 3; a magnetic core mounting groove 4c1 is formed on the connecting rod 4c, in which a magnetic core 10 is fixed, and the magnetic core 10 is made of an iron-gallium alloy material; the induction coil 3 outputs an electromagnetic induction voltage.

[0065] like Figure 4 As shown, the shoulder pad 2 is tightly fitted to the buttstock body 1 to form a complete buttstock.

[0066] In addition to the above structure, an external pressure spring mounting groove can be opened on the shoulder pad 2, so that the external pressure spring 6a falls into the external pressure spring mounting groove to limit the external pressure spring 6a; an internal pressure spring mounting groove can be opened at the bottom of the mounting groove 11, so that the internal pressure spring 6b falls into the internal pressure spring mounting groove to limit the internal pressure spring 6b.

[0067] like Figure 1 、 2 As shown, a module slot is formed on the side wall of the mounting boss 12 , and the module slot is close to the opening of the mounting slot 11 , and a detection data synchronization unit 7 is installed in the module slot.

[0068] like Figure 1 、 2 As shown in 5-10, the detection data synchronization unit 7 includes a processor, a first input terminal of the processor is connected to the output terminal group of the ADC module, and the ADC module is provided with a first external pressure data acquisition channel YIN1_0, a second external pressure data acquisition channel YIN1_1, a first internal pressure data acquisition channel YIN2_0, a second internal pressure data acquisition channel YIN2_1 and a waveform acquisition channel DIN_0;

[0069] The first external pressure data acquisition channel YIN1_0 and the second external pressure data acquisition channel YIN1_1 are both connected one-to-one with the two external pressure sensors 5a through the external pressure acquisition front-end circuit; the first internal pressure data acquisition channel YIN2_0 and the second internal pressure data acquisition channel YIN2_1 are both connected one-to-one with the two internal pressure sensors 5b through the internal pressure acquisition front-end circuit; the waveform acquisition channel DIN_0 is connected to the induction coil 3 through the waveform acquisition front-end circuit.

[0070] like Figure 6 、 8 As shown, the external pressure acquisition front-end circuit includes a comparator 1, a resistor R9 connected in series with the positive input terminal of the comparator 1 to the positive electrode of the external pressure sensor 5a, a resistor R10 connected in series with the negative input terminal of the comparator 1 to the negative electrode of the external pressure sensor 5a, a positive input terminal of the comparator 1 to the front end of the resistor R11, a rear end of the resistor R11 to the output terminal of the comparator 1, and a resistor R12 connected in series with the output terminal of the comparator 1 to the external pressure data acquisition channel;

[0071] The positive power supply terminal of the comparator 1 is connected to the power supply VCC, and the negative power supply terminal of the comparator 1 is grounded.

[0072] like Figure 6 、 9 As shown, the internal pressure acquisition front-end circuit includes a comparator 2, a resistor R13 connected in series with the positive input terminal of the comparator 2 to the positive electrode of the internal pressure sensor 5b, a resistor R14 connected in series with the negative input terminal of the comparator 2 to the negative electrode of the internal pressure sensor 5b, a positive input terminal of the comparator 2 to the front end of the resistor R15, a rear end of the resistor R15 to the output terminal of the comparator 2, and a resistor R16 connected in series with the output terminal of the comparator 2 to the internal pressure data acquisition channel;

[0073] The positive power supply terminal of the comparator 2 is connected to the power supply VCC, and the negative power supply terminal of the comparator 2 is grounded.

[0074] like Figure 6 、 10 As shown, the waveform acquisition front-end circuit includes a comparator 3, a positive input terminal of the comparator 3 is connected to the rear end of the inductor C1, the front end of the inductor C1 is connected to the first output terminal of the induction coil, a reverse input terminal of the comparator 3 is connected to the front end of the resistor R3, the rear end of the resistor R3 is connected to the front end of the resistor R19, the rear end of the resistor R19 is connected to the output terminal of the comparator 3, the rear end of the resistor R3 is connected to the output terminal of the comparator 3, the output terminal of the comparator 3 is connected to the front end of the resistor R2, the rear end of the resistor R2 is connected to the reverse input terminal of the comparator 5, the reverse input terminal of the comparator 5 is connected to the front end of the resistor R1, the rear end of the resistor R1 is connected to the output terminal of the comparator 5, and the output terminal of the comparator 5 is connected to the waveform acquisition channel;

[0075] The waveform front-end acquisition circuit also includes a comparator 4, a positive input end of the comparator 4 is connected to the rear end of the inductor C2, the front end of the inductor C2 is connected to the second output end of the induction coil, a reverse input end of the comparator 4 is connected to the front end of the resistor R5, the rear end of the resistor R5 is connected to the front end of the resistor R20, the rear end of the resistor R20 is connected to the output end of the comparator 4, the rear end of the resistor R5 is connected to the output end of the comparator 4, the rear end of the resistor R5 is further connected in series with a resistor R7 connected to the rear end of the resistor R3, the output end of the comparator 4 is connected to the front end of the resistor R4, the rear end of the resistor R4 is connected to the positive input end of the comparator 5, and the positive input end of the comparator 5 is connected in series with a resistor R6 to be grounded.

[0076] like Figure 5 、 7 As shown, the data receiving terminal RXD of the processor is connected to the data transmitting terminal TXD of the wireless module, and the data transmitting terminal TXD of the processor is connected to the data receiving terminal RXD of the wireless module.

Claims

1. A gun stock for online monitoring of clamping force for shooting training, characterized in that: It comprises a buttstock body (1) and a shoulder pad (2), wherein the buttstock body (1) and the shoulder pad (2) are movably connected; The buttstock body (1) is provided with a mounting groove (11), a circle of mounting bosses (12) are fixed to the side wall of the mounting groove (11), at least one external pressure sensor (5a) is installed on the outer side of the mounting bosses (12), and the external pressure sensor (5a) faces the opening of the mounting groove (11), and at least one internal pressure sensor (5b) is installed on the inner side of the mounting bosses (12), and the internal pressure sensor (5b) faces the bottom of the mounting groove (11); An external pressure block (4a) covering all external pressure sensors (5a) is provided on the outside of the mounting boss (12), and an internal pressure block (4b) covering all internal pressure sensors (5b) is installed on the inside of the mounting boss (12); the external pressure block (4a) and the internal pressure block (4b) are connected via a connecting rod (4c), and an external pressure spring (6a) is in contact between the external pressure block (4a) and the shoulder pad (2), and an internal pressure spring (6b) is in contact between the internal pressure block (4b) and the bottom of the mounting groove (11); A coil mounting groove (121) is formed on the side wall of the mounting boss (12), an induction coil (3) is mounted in the coil mounting groove (121), and the connecting rod (4c) passes through the induction coil (3); a magnetic core mounting groove (4c1) is formed on the connecting rod (4c), and a magnetic core (10) is fixed in the magnetic core mounting groove (4c1); A detection data synchronization unit (7) is installed in the gunstock body (1), and the detection data synchronization unit (7) includes a processor, and the processor is connected to an ADC module. The ADC module is provided with at least one external pressure data acquisition channel, at least one internal pressure data acquisition channel and a waveform acquisition channel, and the external pressure data acquisition channel is connected to the external pressure sensor (5a) in a one-to-one correspondence, the internal pressure data acquisition channel is connected to the internal pressure sensor (5b) in a one-to-one correspondence, and the induction coil (3) is connected to the waveform acquisition channel; The processor is connected to a wireless module, and the wireless module performs data transmission with the peripheral device.

2. The gunstock for online monitoring of clamping force for shooting training according to claim 1, characterized in that: At least two shoulder pad limiting cavities (13) are symmetrically arranged beside the mounting groove (11), a limiting plate (131) is fixed in the shoulder pad limiting cavity (13), and the limiting plate (131) divides the shoulder pad limiting cavity (13) into an inner cavity and an outer channel. A shoulder pad connecting block (8) is provided in the shoulder pad limiting cavity (13), the main body end of the shoulder pad connecting block (8) falls into the inner cavity, the outer extension end of the shoulder pad connecting block (8) extends out of the outer channel and is fixedly connected to the shoulder pad (2), and a guide spring (9) is mounted on the outer extension end, one end of the guide spring (9) is in contact with the shoulder pad (2), and the other end of the guide spring (9) is in contact with the limiting plate (131) after extending into the outer channel.

3. The gunstock for online monitoring of clamping force for shooting training according to claim 1, characterized in that: Each of the external pressure data acquisition channels is connected to the external pressure sensor (5a) via an external pressure acquisition front-end circuit; The external pressure acquisition front-end circuit comprises a comparator 1, a resistor R9 connected in series with the positive phase input end of the comparator 1 to the positive electrode of the external pressure sensor (5a), a resistor R10 connected in series with the negative phase input end of the comparator 1 to the negative electrode of the external pressure sensor (5a), a positive phase input end of the comparator 1 to the front end of a resistor R11, a rear end of the resistor R11 to the output end of the comparator 1, and a resistor R12 connected in series with the output end of the comparator 1 to the external pressure data acquisition channel; The positive power supply terminal of the comparator 1 is connected to the power supply VCC, and the negative power supply terminal of the comparator 1 is grounded.

4. The gunstock for online monitoring of clamping force for shooting training according to claim 1, characterized in that: Each of the internal pressure data acquisition channels is connected to the internal pressure sensor (5b) via an internal pressure acquisition front-end circuit; The internal pressure acquisition front-end circuit comprises a comparator 2, a resistor R13 connected in series with the positive phase input terminal of the comparator 2 to the positive electrode of the internal pressure sensor (5b), a resistor R14 connected in series with the negative phase input terminal of the comparator 2 to the negative electrode of the internal pressure sensor (5b), a positive phase input terminal of the comparator 2 to the front end of a resistor R15, a rear end of the resistor R15 to the output terminal of the comparator 2, and a resistor R16 connected in series with the output terminal of the comparator 2 to the internal pressure data acquisition channel; The positive power supply terminal of the comparator 2 is connected to the power supply VCC, and the negative power supply terminal of the comparator 2 is grounded.

5. The gunstock for online monitoring of clamping force for shooting training according to claim 1, characterized in that: The waveform acquisition channel is connected to the induction coil via a waveform acquisition front-end circuit; The waveform acquisition front-end circuit includes a comparator 3, a positive input terminal of the comparator 3 is connected to the rear end of the inductor C1, a front end of the inductor C1 is connected to the first output terminal of the induction coil, a reverse input terminal of the comparator 3 is connected to the front end of the resistor R3, a rear end of the resistor R3 is connected to the front end of the resistor R19, a rear end of the resistor R19 is connected to the output terminal of the comparator 3, a rear end of the resistor R3 is connected to the output terminal of the comparator 3, the output terminal of the comparator 3 is connected to the front end of the resistor R2, a rear end of the resistor R2 is connected to the reverse input terminal of the comparator 5, a reverse input terminal of the comparator 5 is connected to the front end of the resistor R1, a rear end of the resistor R1 is connected to the output terminal of the comparator 5, and the output terminal of the comparator 5 is connected to the waveform acquisition channel; The waveform front-end acquisition circuit also includes a comparator 4, a positive input end of the comparator 4 is connected to the rear end of the inductor C2, the front end of the inductor C2 is connected to the second output end of the induction coil, a reverse input end of the comparator 4 is connected to the front end of the resistor R5, the rear end of the resistor R5 is connected to the front end of the resistor R20, the rear end of the resistor R20 is connected to the output end of the comparator 4, the rear end of the resistor R5 is connected to the output end of the comparator 4, the rear end of the resistor R5 is further connected in series with a resistor R7 connected to the rear end of the resistor R3, the output end of the comparator 4 is connected to the front end of the resistor R4, the rear end of the resistor R4 is connected to the positive input end of the comparator 5, and the positive input end of the comparator 5 is connected in series with a resistor R6 to be grounded.

6. The gunstock for online monitoring of clamping force for shooting training according to claim 1, characterized in that: The first input terminal group of the processor is connected to the output terminal group of the ADC module.

7. The gunstock for online monitoring of clamping force for shooting training according to claim 1, characterized in that: The data receiving end of the processor is connected to the data sending end of the wireless module, and the data sending end of the processor is connected to the data receiving end of the wireless module.

8. The gunstock for online monitoring of clamping force for shooting training according to claim 2, characterized in that: The sum of the elastic forces of all the guide springs (9) is greater than the sum of the elastic forces of the outer pressure spring (6a) and the inner pressure spring (6b).

9. The gun stock for online monitoring of clamping force for shooting training according to claim 3, characterized in that: All the shoulder pad limiting cavities (13) are arranged around the mounting slot (11); The shoulder pad connecting block (8) has a T-shaped cross section, wherein the horizontal arm is the main body end and the vertical arm is the extension end.

10. The gunstock for online monitoring of clamping force for shooting training according to claim 1, characterized in that: After the shoulder pad (2) and the buttstock body (1) are tightly fitted together, a complete buttstock is formed.

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