Arm blunt impact protection performance detection device based on dynamic data acquisition

Abstract

The invention relates to an arm blunt strike protection performance detection device based on dynamic data acquisition, and the device comprises a strike execution module which comprises a linear guide rail, a servo motor and a balancing weight, and the tail end of the strike execution module is provided with a standard shield impact head; according to the bionic arm module, a skeleton layer is of a 235 rigid structure, and the bionic arm module is composed of a wedge-shaped rigid structure and a cuboid rigid structure and used for simulating a human arm and conducting analysis; the data acquisition module is used for measuring impact force, torque and dynamic strain in real time, and an output signal of the data acquisition module is transmitted to a multi-channel data acquisition unit through a charge amplifier for corresponding data acquisition; and the self-adaptive clamp module comprises an adjustable lead screw supporting frame and a clamping mechanism and is used for ensuring the stability of the anti-riot shield or the test sample in the striking process. The invention also relates to a corresponding method, a processor and a storage medium thereof. By the adoption of the method, the processor and the storage medium, millisecond-level synchronous acquisition of the impact dynamics parameters is achieved, and more accurate and comprehensive data can be obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of protective performance testing of police equipment, and in particular to a device, method, processor and computer-readable storage medium for quantitative testing of arm blunt impact protection performance based on an impact force sensor, a simulation dummy and dynamic data acquisition. Background Art

[0002] In the existing arm blunt impact protection performance test, the existing testing equipment has many technical defects. The current testing methods rely too much on manual operation, which leads to poor data repeatability, and each test result may have large deviations due to human factors. In the manual striking link, according to the manual testing clauses in the GA422-2019 and GA2139-2024 standards, the impact force and angle of the traditional arm shield are uncontrollable, which greatly affects the accuracy and reliability of the test results. At the same time, there is a lack of synchronous quantitative collection of key parameters such as impact force and speed, making it impossible for the acquired data to fully and accurately reflect the protection performance. In addition, test conditions, such as striking angle and force, are difficult to standardize and control, which further affects the reliability and comparability of the test results. These problems have seriously restricted the scientific evaluation of the protective performance of police equipment and the improvement of the quality of police equipment. This problem needs to be solved urgently.

[0003] The application scenarios of this technical solution are suitable for impact strength testing of police riot shields and arm guards, and can also be used for hand impact safety assessment of vehicle interiors (such as dashboard collision testing), and have broad application prospects. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a device, method, processor and computer-readable storage medium for quantitative detection of arm blunt impact protection performance based on impact force sensor, simulation dummy and dynamic data acquisition.

[0005] To achieve the above objectives, the present invention provides a device, method, processor, and computer-readable storage medium for quantitatively detecting arm blunt impact protection performance based on an impact force sensor, a simulation dummy, and dynamic data acquisition.

[0006] The main features of the arm blunt impact protection performance detection device based on dynamic data acquisition are as follows:

[0007] The striking execution module includes a linear guide, a servo motor and a counterweight, with a standard shield impact head installed at the end;

[0008] The bionic arm module uses a 235 rigid structure in the skeleton layer, which consists of a wedge-shaped rigid structure and a rectangular rigid structure, and is used to simulate the human arm and perform corresponding situation analysis;

[0009] The data acquisition module is used to measure the impact force, torque and dynamic strain in real time. Its output signal is transmitted to the multi-channel data collector through the charge amplifier for corresponding data acquisition;

[0010] Adaptive fixture module, including adjustable screw support and clamping mechanism, is used to ensure that the riot shield or test sample remains stable during the impact process.

[0011] Preferably, the device further comprises:

[0012] The impact simulation device has a built-in energy storage wheel, a striker, a shield impact tester and a variable frequency motor drive system. It is used to support different test requirements with a speed of 0.5 to 10 m / s, an angle of 0 to 180 degrees, an impact energy range of 0 to 600 J, a resolution of 0.01 J, and an impact linear speed control of 18 m / s ± 0.3 m / s.

[0013] Preferably, the linear guide rail is used to ensure the smoothness of the striking process, the servo motor is used to provide stable power, the counterweight block is used to adjust the mass according to different test requirements, and the standard shield impact head is used to ensure that the striking process complies with relevant standards.

[0014] Preferably, the bionic arm module adopts a biomechanical bionic structure, with a three-axis impact force sensor embedded inside, and a sampling rate ≥10kHz, for quickly and accurately collecting impact force data; its bone layer adopts a polyurethane composite material to simulate the stiffness of human bones, and the elastic modulus is 10~15GPa.

[0015] Preferably, the data acquisition module uses quartz crystal sensitive elements, which are respectively installed in the middle forearm and wrist of the dummy simulation arm. The data acquisition module consists of a multi-channel data collector, an ultra-dynamic strain gauge and an oscilloscope, and is used to obtain impact force, acceleration and velocity data. It uses a photoelectric sensor or a grating sensor with a sensitivity of ≥2mV / mm.

[0016] Preferably, the adaptive fixture module includes an arc-shaped clamping surface with an adjustable curvature radius of 50 to 150 mm and a pneumatic locking mechanism with an adjustable pressure of 0.1 to 0.5 MPa, wherein the clamping force is fed back in real time through a strain gauge with a measuring range of 0 to 200 N and an accuracy of ±1%; the arc-shaped clamping surface is used to adapt to protective equipment of different shapes, the pneumatic locking mechanism is used to ensure firm clamping, and the strain gauge is used to provide real-time feedback on the clamping force to ensure the stability of the test.

[0017] The above-mentioned device is used to implement a method for detecting arm blunt impact protection performance based on dynamic data collection, wherein the method comprises the following steps:

[0018] (1) Fix the riot shield or protective equipment to the adjustable screw support frame through the clamping mechanism, adjust the screw to ensure that the vertical force surface is aligned with the striker to ensure the accuracy of the striking position; calibrate the initial kinetic energy of the striking simulation device to E = 1 / 2mv 2 , error ≤±3%, ensuring the accuracy of striking energy;

[0019] (2) Environmental pretreatment: The sample is subjected to high and low temperature treatment according to the standard, and the impact test is completed within a preset time period after treatment to simulate the protective performance under extreme working conditions;

[0020] (3) Setting the striking parameters: The speed of the energy storage wheel is controlled by the frequency converter, and the striking energy and linear speed are set. The clutch instantly releases the kinetic energy of the striker to achieve precise striking. Multi-axis striking is performed with the set parameters, and at least three repeated tests are performed to improve the reliability of the test results.

[0021] (4) Installing an arm shield or protective equipment and a bionic arm on the detection device, and applying a preload force to the equipment to a threshold value to ensure the installation firmness of the protective equipment and the reliability of the experimental data;

[0022] (5) Dynamic data acquisition: the forearm impact force and wrist torque peak are recorded through the force sensor; the speed measuring device verifies the actual striking speed; the angular velocity sensor integrates to generate the arm bending angle change curve, and the impact peak force (Fmax), force attenuation rate (Δt), and energy absorption rate (η=1-E_residual / E_initial×100%) are synchronously collected to fully acquire test data and fully collect dynamic data during the impact process;

[0023] (6) Performance evaluation: Based on the degree of shield rupture, sensor data and dynamic waveform consistency, determine whether the protection performance meets the standards, and determine the protection level based on the classification threshold to achieve quantitative evaluation of the protection performance.

[0024] The main feature of the arm blunt impact protection performance detection processor based on dynamic data acquisition is that the processor is configured to execute computer-executable instructions. When the computer-executable instructions are executed by the processor, the steps of the above-mentioned arm blunt impact protection performance detection method based on dynamic data acquisition are implemented.

[0025] The main feature of the computer-readable storage medium is that a computer program is stored thereon, and the computer program can be executed by a processor to implement the steps of the above-mentioned method for detecting arm blunt impact protection performance based on dynamic data acquisition.

[0026] This device, method, processor, and computer-readable storage medium for quantitatively testing arm blunt force protection performance, based on an impact force sensor, a simulated dummy, and dynamic data acquisition, utilizes this technical solution. This device achieves millisecond-level synchronous acquisition of impact dynamic parameters, enabling more accurate and comprehensive data. Mechanical automation controls minimize test repeatability to ≤5%, significantly improving the reliability and comparability of test results. Its quantitative evaluation system is compatible with existing police protection standards, such as GA422-2019 and GA2139-2024, facilitating integration with existing standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural schematic diagram of the arm blunt impact protection performance detection device based on dynamic data acquisition of the present invention.

[0028] Reference numerals

[0029] 1 Shield Beater

[0030] 2 Liftable and rotatable base

[0031] 3 Shield test striking platform

[0032] 4 Signal amplifier

[0033] 5 Signal Receiver

[0034] 6 Computer display terminal

[0035] 7 Arm shield force dynamic collection device

[0036] 8 Sensors

[0037] 9 threaded through holes DETAILED DESCRIPTION

[0038] In order to more clearly describe the technical content of the present invention, further description is given below in conjunction with specific embodiments.

[0039] Before describing in detail embodiments according to the present invention, it should be noted that, hereinafter, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, whereby a process, method, article, or apparatus comprising a list of elements includes not only those elements, but also other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0040] The arm blunt impact protection performance detection device based on dynamic data acquisition, wherein the device comprises:

[0041] The striking execution module includes a linear guide, a servo motor and a counterweight, with a standard shield impact head installed at the end;

[0042] The bionic arm module uses a 235 rigid structure in the skeleton layer, which consists of a wedge-shaped rigid structure and a rectangular rigid structure, and is used to simulate the human arm and perform corresponding situation analysis;

[0043] The data acquisition module is used to measure the impact force, torque and dynamic strain in real time. Its output signal is transmitted to the multi-channel data collector through the charge amplifier for corresponding data acquisition;

[0044] Adaptive fixture module, including adjustable screw support and clamping mechanism, is used to ensure that the riot shield or test sample remains stable during the impact process.

[0045] As a preferred embodiment of the present invention, the device further comprises:

[0046] The impact simulation device has a built-in energy storage wheel, a striker, a shield impact tester and a variable frequency motor drive system. It is used to support different test requirements with a speed of 0.5 to 10 m / s, an angle of 0 to 180 degrees, an impact energy range of 0 to 600 J, a resolution of 0.01 J, and an impact linear speed control of 18 m / s ± 0.3 m / s.

[0047] As a preferred embodiment of the present invention, the linear guide rail is used to ensure the smoothness of the striking process, the servo motor is used to provide stable power, the counterweight block is used to adjust the mass according to different testing requirements, and the standard shield impact head is used to ensure that the striking process complies with relevant standards.

[0048] As a preferred embodiment of the present invention, the bionic arm module adopts a biomechanical bionic structure, with a three-axis impact force sensor embedded inside, and a sampling rate of ≥10kHz, which is used to quickly and accurately collect impact force data; its bone layer adopts a polyurethane composite material to simulate the stiffness of human bones, and the elastic modulus is 10~15GPa.

[0049] As a preferred embodiment of the present invention, the data acquisition module uses quartz crystal sensitive elements, which are respectively installed in the middle forearm and wrist of the dummy simulation arm. The data acquisition module consists of a multi-channel data collector, an ultra-dynamic strain gauge and an oscilloscope, and is used to obtain impact force, acceleration and velocity data. It uses a photoelectric sensor or a grating sensor with a sensitivity of ≥2mV / mm.

[0050] As a preferred embodiment of the present invention, the adaptive clamp module includes an arc-shaped clamping surface with an adjustable curvature radius of 50 to 150 mm and a pneumatic locking mechanism with an adjustable pressure of 0.1 to 0.5 MPa, wherein the clamping force is fed back in real time through a strain gauge with a measuring range of 0 to 200 N and an accuracy of ±1%; the arc-shaped clamping surface is used to adapt to protective equipment of different shapes, the pneumatic locking mechanism is used to ensure firm clamping, and the strain gauge is used to provide real-time feedback of the clamping force to ensure the stability of the test.

[0051] The above-mentioned device is used to implement a method for detecting arm blunt impact protection performance based on dynamic data collection, wherein the method comprises the following steps:

[0052] (1) Fix the riot shield or protective equipment to the adjustable screw support frame through the clamping mechanism, adjust the screw to ensure that the vertical force surface is aligned with the striker to ensure the accuracy of the striking position; calibrate the initial kinetic energy of the striking simulation device to E = 1 / 2mv 2 , error ≤±3%, ensuring the accuracy of striking energy;

[0053] (2) Environmental pretreatment: The sample is subjected to high and low temperature treatment according to the standard, and the impact test is completed within a preset time period after treatment to simulate the protective performance under extreme working conditions;

[0054] (3) Setting the striking parameters: The speed of the energy storage wheel is controlled by the frequency converter, and the striking energy and linear speed are set. The clutch instantly releases the kinetic energy of the striker to achieve precise striking. Multi-axis striking is performed with the set parameters, and at least three repeated tests are performed to improve the reliability of the test results.

[0055] (4) Installing an arm shield or protective equipment and a bionic arm on the detection device, and applying a preload force to the equipment to a threshold value to ensure the installation firmness of the protective equipment and the reliability of the experimental data;

[0056] (5) Dynamic data acquisition: the forearm impact force and wrist torque peak are recorded through the force sensor; the speed measuring device verifies the actual striking speed; the angular velocity sensor integrates to generate the arm bending angle change curve, and the impact peak force (Fmax), force attenuation rate (Δt), and energy absorption rate (η=1-E_residual / E_initial×100%) are synchronously collected to fully acquire test data and fully collect dynamic data during the impact process;

[0057] (6) Performance evaluation: Based on the degree of shield rupture, sensor data and dynamic waveform consistency, determine whether the protection performance meets the standards, and determine the protection level based on the classification threshold to achieve quantitative evaluation of the protection performance.

[0058] The arm blunt impact protection performance detection processor based on dynamic data acquisition, wherein the processor is configured to execute computer-executable instructions. When the computer-executable instructions are executed by the processor, the steps of the above-mentioned arm blunt impact protection performance detection method based on dynamic data acquisition are implemented.

[0059] The computer-readable storage medium stores a computer program thereon, and the computer program can be executed by a processor to implement the steps of the above-mentioned method for detecting arm blunt impact protection performance based on dynamic data acquisition.

[0060] In practical application, this technical solution includes the following technological innovations:

[0061] Modular bionic testing system: Through the integration of mechanical structure and sensors, dynamic parameter quantitative acquisition is achieved, which can more accurately simulate the actual arm force conditions, obtain comprehensive and accurate dynamic parameters, and perform parameter analysis.

[0062] Repeatable impact control: Adopting servo drive + laser speed measurement closed-loop control, the impact velocity error is ≤±2%, ensuring the consistency and accuracy of each impact, providing guarantee for the reliability of the test results.

[0063] Intelligent grading and judgment: Automatic grading based on dual thresholds of peak force and energy absorption rate can quickly and accurately evaluate the performance of protective equipment and improve detection efficiency.

[0064] Multimodal data fusion: By integrating impact force, velocity, acceleration, and arm posture parameters, a comprehensive evaluation of the dynamic protective performance of police shields can be achieved, fully reflecting the protective effect of the shields in actual use.

[0065] Adjustable impact device: The designed impact device can support independent adjustment of multiple parameters such as energy, angle and speed to meet different testing requirements and improve test flexibility and accuracy.

[0066] Highly repeatable dummy arm: This design utilizes a bionic structure combined with a multi-sensor layout to enhance the biosimulation of the dummy arm, ensuring the reliability of test results and providing more realistic data for the performance evaluation of police shields.

[0067] The device structure of this technical solution will be described in detail below, including:

[0068] Striking execution module: Contains a linear guide (model SBR20), a servo motor (rated torque 5 N·m), a counterweight (mass 1 to 5 kg adjustable), and a standard shield impact head (50 mm diameter hemispherical, compliant with GA422-2019) installed at the end.

[0069] The bionic arm module utilizes a 235° rigid structure, comprised of a wedge-shaped rigid structure and a rectangular rigid structure, to simulate the human arm and hand. Two dynamic force sensors (model KD30010L, range 0-10kN, sensitivity ≥4pC / N) are embedded within the module. The sensor wiring path is angled 180° from the rigid structure, with a separation of 190mm between the two dynamic sensors. The 235° rigid structure simulates the strength and toughness of real arm bones. The dynamic force sensors provide omnidirectional force sensing, and the specific angle of the sensor wiring path facilitates more accurate data collection.

[0070] Data acquisition module: Utilizing quartz crystal sensors (such as KD series sensors), these sensors are installed at the mid-forearm and wrist of the dummy's simulated arm. This system measures impact force, torque, and dynamic strain in real time. The output signals are transmitted via a charge amplifier to a multi-channel data acquisition device, ensuring accurate and timely data collection. A multi-channel acquisition card (sampling rate 20kHz) connects to the sensors via an aviation plug, and the acquisition terminal is equipped with a data filtering algorithm (cutoff frequency 1kHz). The high-sampling-rate multi-channel acquisition card enables rapid data acquisition, while the data filtering algorithm removes interference signals to ensure data accuracy.

[0071] Adaptive fixture module: This module includes an adjustable screw support and clamping mechanism to ensure the stability of the riot shield or test specimen during impact, guaranteeing reliable test results. It features a curved clamping surface (adjustable radius of curvature from 50 to 150 mm) and a pneumatic locking mechanism (adjustable pressure from 0.1 to 0.5 MPa). Strain gauges provide real-time clamping force feedback (range 0 to 200 N, accuracy ±1%). The curved clamping surface adapts to various protective equipment shapes, while the pneumatic locking mechanism ensures a secure clamp. The strain gauges provide real-time clamping force feedback, ensuring test stability.

[0072] The technical parameters involved are as follows:

[0073] Impact velocity range: 0.5~8m / s, which can simulate the impact velocity in various actual usage scenarios.

[0074] Data synchronization error: The error in collecting data through the oscilloscope is less than or equal to 0.2ms, ensuring the synchronization and accuracy of data collection.

[0075] Clamp adaptability diameter: The clamp diameter can be adjusted and is applicable to 60~180mm, which can adapt to a variety of protective equipment of different sizes.

[0076] The components of each functional structure are as follows:

[0077] The impact simulation device consists of an energy storage wheel, a striker (25mm diameter, made of 45 steel, hardness 28-32HRC, mass 4.44kg±0.05kg), and a variable frequency motor drive system. It supports speeds of 0.5-10m / s, angles of 0-180°, and an impact energy range of 0-600J, with a resolution of 0.01J and a linear velocity control of 18m / s±0.3m / s, meeting diverse testing requirements. The shield impact tester includes a programmable control system and a servo motor drive, enabling simulation of various impact scenarios.

[0078] Simulated dummy arm: Utilizing a biomechanically inspired structure, the dummy features an embedded triaxial impact force sensor with a sampling rate of ≥10kHz, enabling rapid and accurate collection of impact force data. Its skeleton is constructed from a polyurethane composite material to simulate human bone stiffness, with an elastic modulus of 10-15 GPa, better simulating the mechanical properties of a real arm.

[0079] Data acquisition system: Consisting of a multi-channel data collector, an ultra-dynamic strain gauge, and an oscilloscope, this multi-channel synchronous acquisition device integrates impact force, acceleration (range ±500g), and velocity (laser velocity measurement accuracy ±0.1m / s) data. It uses a photoelectric sensor or grating sensor with a sensitivity of ≥2mV / mm to monitor the linear velocity of the impactor in real time and provide feedback to the control system. It supports the simultaneous acquisition and waveform display of dynamic strain, stress, acceleration, and shock wave overpressure, and can support real-time waveform display and data export, facilitating subsequent comprehensive analysis of test data.

[0080] The fixture, consisting of an adjustable screw support and clamping mechanism, is a six-degree-of-freedom adjustable fixture that accommodates various sizes of protective equipment, ranging in diameter from 50 to 200 mm. A pressure feedback sensor ensures a constant clamping force of 50 ± 5 N, ensuring the stability of the protective equipment during testing. The riot shield or protective equipment is secured to the support using the clamping mechanism. The screw is adjusted to ensure alignment of the vertical force-bearing surface with the striker, ensuring accurate impact placement.

[0081] In actual application, the detection process of the arm blunt impact protection performance detection device based on dynamic data acquisition of this technical solution is as follows:

[0082] Step 1: Fix the riot shield or protective equipment to the support frame through the clamping mechanism, adjust the screw to ensure that the vertical force surface is aligned with the striker to ensure the accuracy of the striking position. Calibrate the initial kinetic energy of the striking device (E = 1 / 2mv 2 , error ≤±3%), ensuring the accuracy of striking energy.

[0083] Step 2: Environmental pretreatment: subject the sample to high and low temperature treatment according to the standard (-30℃±2℃ or +55℃±2℃, 4 hours), and complete the impact test within 5 minutes after treatment to simulate the protective performance under extreme working conditions.

[0084] Step 3: Set the striking parameters. Use the inverter to control the speed of the energy storage wheel, set the striking energy (e.g., 342J ± 13J) and the linear speed (18m / s ± 0.3m / s). The clutch instantly releases the striking device's kinetic energy to achieve precise striking. Perform multi-axis striking with the set parameters, repeating the test at least three times to improve the reliability of the test results.

[0085] Step 4: Install the arm shield or protective equipment on the dummy's arm on the striking platform, and apply preload force to the equipment to the threshold to ensure the installation security of the protective equipment and the reliability of the experimental data.

[0086] Step 5: Dynamic data acquisition: The force sensor records the forearm impact force and peak wrist torque; the velocity measurement device verifies the actual impact velocity; the angular velocity sensor integrates to generate a curve of arm bending angle change. Simultaneously, the peak impact force (Fmax), force decay rate (Δt), and energy absorption rate (η = 1-E_residual / E_initial × 100%) are collected to comprehensively acquire test data. Comprehensive dynamic data collection during the impact process is achieved.

[0087] Step 6: Performance Evaluation: Based on the degree of shield cracking (e.g., crack length ≤ 50mm), sensor data (e.g., force / torque thresholds), and dynamic waveform consistency, the protective performance is determined to meet standards. The protection level is determined based on grading thresholds, such as Level A: Fmax ≤ 4kN, η ≥ 70%, achieving a quantitative evaluation of protective performance. The overall structure of the test and inspection platform provides a scientific basis for product quality assessment.

[0088] In practical application, this dynamic data acquisition-based arm blunt impact protection performance testing device consists of a multimodal sensor integration, a programmable shield impact tester (including a servo drive module), a bionic dummy arm with integrated dynamic force sensors, force, torque, and angular velocity sensors, a multi-parameter synchronous acquisition device (impact force / velocity / acceleration), and a six-degree-of-freedom adjustable fixture to achieve full-dimensional quantification of impact loads. The velocity measurement and calibration device, including a laser velocimeter and a rigid calibration base, measures velocity at the moment of impact, calibrates the maximum impact force based on the rigidity, and verifies the sensor's linearity and range. A dynamic calibration mechanism uses a pendulum impact response measurement method to dynamically calibrate the sensor. The impact tester's energy storage and release structure, combined with the fixture, ensures kinetic energy consistency across multiple tests. Environmental adaptability testing integrates a high and low temperature preconditioning module to simulate protective performance degradation under extreme operating conditions.

[0089] The detection steps include dynamic energy absorption rate calculation and at least 3 times of repeatability verification (RSD≤5%).

[0090] The impact head of the impact device has a mass of 2.5 kg and a circular plane with a diameter of 80 mm, which meets the blunt impact characteristics.

[0091] It also includes an environmental simulation device that supports the integration of high and low temperature environmental chambers to verify the protection performance under extreme conditions.

[0092] The force sensor is installed in the middle of the forearm of the dummy arm, and the torque sensor is set at the wrist. The force sensor meets the resonant frequency of ≥75kHz.

[0093] The device also includes an intelligent analysis module. Incorporating parametric research methods, software has been developed to automatically analyze the impact of factors such as impact stiffness and friction, producing a protective performance assessment report. By integrating force, torque, acceleration, and velocity data, a comprehensive analysis of the impact process is achieved. Standardized fixtures, an automatic reset impact device, and a parameterized control system ensure test consistency.

[0094] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention pertain.

[0095] It should be understood that each part of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution device.

[0096] Those skilled in the art will understand that all or part of the steps of the method for implementing the above-mentioned embodiment can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one of the steps of the method embodiment or a combination thereof.

[0097] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0098] Throughout this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "embodiment" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0099] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0100] This device, method, processor, and computer-readable storage medium for quantitatively testing arm blunt force protection performance, based on an impact force sensor, a simulated dummy, and dynamic data acquisition, utilizes this technical solution. This device achieves millisecond-level synchronous acquisition of impact dynamic parameters, enabling more accurate and comprehensive data. Mechanical automation controls minimize test repeatability to ≤5%, significantly improving the reliability and comparability of test results. Its quantitative evaluation system is compatible with existing police protection standards, such as GA422-2019 and GA2139-2024, facilitating integration with existing standards.

[0101] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it will be apparent that various modifications and variations may be made without departing from the spirit and scope of the present invention. Accordingly, the specification and drawings are to be regarded as illustrative rather than restrictive.

Claims

1. An arm blunt impact protection performance detection device based on dynamic data acquisition, characterized in that: The device comprises: The striking execution module includes a linear guide, a servo motor and a counterweight, with a standard shield impact head installed at the end; The bionic arm module uses a 235 rigid structure in the skeleton layer, which consists of a wedge-shaped rigid structure and a rectangular rigid structure, and is used to simulate the human arm and perform corresponding situation analysis; The data acquisition module is used to measure the impact force, torque and dynamic strain in real time. Its output signal is transmitted to the multi-channel data collector through the charge amplifier for corresponding data acquisition; Adaptive fixture module, including adjustable screw support and clamping mechanism, is used to ensure that the riot shield or test sample remains stable during the impact process.

2. The arm blunt impact protection performance detection device based on dynamic data acquisition according to claim 1 is characterized in that: The device further comprises: The impact simulation device has a built-in energy storage wheel, a striker, a shield impact tester and a variable frequency motor drive system. It is used to support different test requirements with a speed of 0.5 to 10 m / s, an angle of 0 to 180 degrees, an impact energy range of 0 to 600 J, a resolution of 0.01 J, and an impact linear speed control of 18 m / s ± 0.3 m / s.

3. The arm blunt impact protection performance detection device based on dynamic data acquisition according to claim 1 is characterized in that: The linear guide rail is used to ensure the smoothness of the striking process, the servo motor is used to provide stable power, the counterweight block is used to adjust the mass according to different test requirements, and the standard shield impact head is used to ensure that the striking process complies with relevant standards.

4. The arm blunt impact protection performance detection device based on dynamic data acquisition according to claim 1 is characterized in that: The bionic arm module adopts a biomechanical bionic structure, with a three-axis impact force sensor embedded inside, and a sampling rate of ≥10kHz, which is used to quickly and accurately collect impact force data; its bone layer uses polyurethane composite material to simulate the stiffness of human bones, with an elastic modulus of 10 to 15GPa.

5. The arm blunt impact protection performance detection device based on dynamic data acquisition according to claim 1 is characterized in that: The data acquisition module uses quartz crystal sensitive elements and is installed in the middle forearm and wrist of the dummy's simulated arm. The data acquisition module consists of a multi-channel data collector, an ultra-dynamic strain gauge and an oscilloscope, and is used to obtain impact force, acceleration and velocity data. It uses a photoelectric sensor or a grating sensor with a sensitivity of ≥2mV / mm.

6. The arm blunt impact protection performance detection device based on dynamic data acquisition according to claim 1 is characterized in that: The adaptive fixture module includes a curved clamping surface with an adjustable curvature radius of 50 to 150 mm and a pneumatic locking mechanism with an adjustable pressure of 0.1 to 0.5 MPa. The clamping force is fed back in real time through a strain gauge with a measuring range of 0 to 200 N and an accuracy of ±1%. The curved clamping surface is used to adapt to protective equipment of different shapes, the pneumatic locking mechanism is used to ensure firm clamping, and the strain gauge is used to provide real-time feedback on the clamping force to ensure test stability.

7. A method for detecting arm blunt impact protection performance based on dynamic data acquisition using the device according to any one of claims 1 to 6, characterized in that: The method comprises the following steps: (1) Fix the riot shield or protective equipment to the adjustable screw support frame through the clamping mechanism, adjust the screw to ensure that the vertical force surface is aligned with the striker to ensure the accuracy of the striking position; calibrate the initial kinetic energy of the striking simulation device to E = 1 / 2mv 2 , error ≤±3%, ensuring the accuracy of striking energy; (2) Environmental pretreatment: The sample is subjected to high and low temperature treatment according to the standard, and the impact test is completed within a preset time period after treatment to simulate the protective performance under extreme working conditions; (3) Setting the striking parameters: The speed of the energy storage wheel is controlled by the frequency converter, and the striking energy and linear speed are set. The clutch instantly releases the kinetic energy of the striker to achieve precise striking. Multi-axis striking is performed with the set parameters, and at least three repeated tests are performed to improve the reliability of the test results. (4) Installing an arm shield or protective equipment and a bionic arm on the detection device, and applying a preload force to the equipment to a threshold value to ensure the installation firmness of the protective equipment and the reliability of the experimental data; (5) Dynamic data acquisition: the forearm impact force and wrist torque peak are recorded through the force sensor; the speed measuring device verifies the actual striking speed; the angular velocity sensor integrates to generate the arm bending angle change curve, and the impact peak force (Fmax), force attenuation rate (Δt), and energy absorption rate (η=1-E_residual / E_initial×100%) are synchronously collected to fully acquire test data and fully collect dynamic data during the impact process; (6) Performance evaluation: Based on the degree of shield rupture, sensor data and dynamic waveform consistency, determine whether the protection performance meets the standards, and determine the protection level based on the classification threshold to achieve quantitative evaluation of the protection performance.

8. A processor for detecting arm blunt impact protection performance based on dynamic data acquisition, characterized in that: The processor is configured to execute computer-executable instructions. When the computer-executable instructions are executed by the processor, the steps of the arm blunt impact protection performance detection method based on dynamic data acquisition described in claim 7 are implemented.

9. A computer-readable storage medium, characterized in that A computer program is stored thereon, and the computer program can be executed by a processor to implement the steps of the arm blunt impact protection performance detection method based on dynamic data acquisition as described in claim 7.

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