Explosion field damage parameter measurement system based on composite human-shaped target

Abstract

The utility model belongs to the field of parameter measurement, and particularly relates to an explosion field damage parameter measurement system based on a composite human-shaped target. The system comprises a simulation human-shaped target, a plurality of different types of sensors, a data acquisition module and a computer, the simulated human-shaped target comprises a skeleton part, a viscera part, a muscle part and a skin part; a plurality of prefabricated hole sites are formed in different positions of the surface or the framework of the simulated human-shaped target, and the plurality of sensors of different types are respectively mounted in the plurality of prefabricated hole sites; the plurality of different types of sensors are respectively connected with a plurality of input ends of the data acquisition module through signal transmission lines; a mounting groove is formed in the framework of the simulation human-shaped target, and the signal transmission line is arranged in the mounting groove; the output end of the data acquisition module is in communication connection with the computer. The device can simulate the damage condition of a real person in an explosion field, is convenient for directly reflecting impact and penetration injury results, and is suitable for continuous experiments in an explosion field environment.

Description

Technical Field

[0001] The utility model relates to an explosion field damage parameter measurement system, in particular to an explosion field damage parameter measurement system based on a composite humanoid target. Background Art

[0002] Explosions can easily cause casualties. The main damaging elements of explosions include shock waves, fragments, and heat. Different damaging elements have different criteria and influencing factors for the damage to the human body, and the killing effects on different parts are also different. It is urgent to carry out research on key measurement technologies based on the human body, form the ability to measure the killing effectiveness of personnel, and provide test data support for the comprehensive evaluation of explosion power and personnel protection.

[0003] The damage caused by explosion to the human body includes dynamic problems of strong nonlinear behaviors such as fluid-solid coupling, high-speed impact, and high-strain rate rupture. Explosion injuries to the human body are divided into several levels. The first level of explosion injury: shock wave; the body surface facing the explosion center is subjected to overpressure + dynamic pressure, and the pressure on both sides is equivalent to the overpressure of the wavefront. The shock wave acts on the surface tissue and hollow organs of the human body. The shock wave can directly cause tissue damage and act on gas-containing tissues (ears, intestines, and lungs). Lung explosion injuries are the most serious. The second level of explosion injury: fragment injury; squeezing, cutting, tearing, penetration, fracture, contusion, and the influencing factors include: fragment velocity, mass, size, shape composition, density, and properties of specific parts of the human body. The third level of explosion injury: displacement, throwing, and collision under the action of shock waves.

[0004] Existing blast field damage measurement systems usually use half-body dummies or parts such as the head and torso, with a small number and types of sensors arranged, resulting in incomplete results in the measurement of blast field damage parameters, causing deviations in the comprehensive assessment of explosion power and personnel protection. Utility Model Content

[0005] The utility model aims to solve the technical problem that the measurement results of the existing explosion field damage measurement system are not comprehensive enough, resulting in deviations in the comprehensive evaluation of explosion power and personnel protection, and to provide an explosion field damage parameter measurement system based on a composite humanoid target.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A blast field damage parameter measurement system based on a composite humanoid target, which is special in that:

[0008] The invention comprises a simulated humanoid target, a shock wave pressure sensor, an acceleration sensor, a displacement sensor, a temperature sensor, a force sensor, a data acquisition module and a computer; the simulated humanoid target comprises a skeleton part, an internal organ part, a muscle part and a skin part; the skeleton part is made of alloy material, and the internal organ part, the muscle part and the skin part are all made of transparent gel material; a plurality of prefabricated holes are arranged at different positions on the surface or skeleton of the simulated humanoid target, and the shock wave pressure sensor, the acceleration sensor, the displacement sensor, the temperature sensor and the force sensor are respectively installed in the plurality of prefabricated holes; the shock wave pressure sensor, the acceleration sensor, the displacement sensor, the temperature sensor and the force sensor are respectively connected to a plurality of input ends of the data acquisition module through signal transmission lines; an installation groove is arranged on the skeleton of the simulated humanoid target, and the signal transmission line is arranged in the installation groove; the output end of the data acquisition module is connected to the computer for communication, and the output signal of each sensor is sent to the computer for processing.

[0009] Furthermore, there are multiple shock wave pressure sensors, which are respectively installed in prefabricated holes in the head, chest, abdomen, arms and legs of the simulated humanoid target, and their sensitive surfaces are all set flush with the surfaces of the corresponding parts of the simulated humanoid target; the acceleration sensor adopts a three-axis accelerometer, the number of which is at least two, and is respectively installed in the prefabricated holes in the head and neck of the simulated humanoid target; the displacement sensor, temperature sensor and force sensor all adopt bridge sensors, the number of which is one or more, and are respectively installed in the prefabricated holes in one or more parts of the head, chest, abdomen, arms and legs.

[0010] Furthermore, an installation cavity for installing a data acquisition module is provided inside the simulated humanoid target, and the data acquisition module is installed in the installation cavity; or, it also includes an external protective heat dissipation chassis; the data acquisition module is arranged in the protective heat dissipation chassis, and the protective heat dissipation chassis is placed on one side of the simulated humanoid target.

[0011] Furthermore, the data acquisition module includes an acquisition unit and a trigger unit; multiple input ends of the acquisition unit are respectively connected to the shock wave pressure sensor, acceleration sensor, displacement sensor, temperature sensor and force sensor through signal transmission lines, and the output end is connected to the computer for communication; the output end of the trigger unit is connected to the trigger end of the acquisition unit for triggering the acquisition unit to perform acquisition.

[0012] Furthermore, the trigger unit includes a manual trigger, a timing trigger, an external level signal trigger and a light trigger; the output ends of the manual trigger, the timing trigger, the external level signal trigger and the light trigger are all connected to the trigger end of the acquisition unit.

[0013] Furthermore, the acquisition unit includes multiple acquisition boards arranged in a stack; the input interfaces of the multiple acquisition boards are respectively connected to the shock wave pressure sensor, acceleration sensor, displacement sensor, temperature sensor and force sensor through signal transmission lines, and the output ends communicate with the computer; the trigger end of the acquisition board is respectively connected to the output ends of the manual trigger, timing trigger, external level signal trigger and light trigger.

[0014] Furthermore, the data acquisition module is connected to the computer through a wireless network and / or an optical fiber network.

[0015] Furthermore, it also includes a power supply module connected to the data acquisition module; the power supply module is provided with a 220V DC interface and a 5V DC USB interface.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The simulated humanoid target used in the utility model can be installed in an explosion field environment by simulating the posture of a real person. The size, weight and surface material are close to those of a real person, and can simulate the damage of a real person in an explosion field. The various types of sensors carried can realize the measurement of shock wave pressure. The body tissue made of gel is convenient for intuitively reflecting the results of impact and penetration injuries, so that the whole set of dummies can provide data support for the determination of fragment penetration injuries and shock wave killing injuries. The gel tissue of each part of the dummy can be replaced after being damaged, and the new gel tissue can be filled around the original skeleton to complete the repair. It is suitable for continuous experiments in an explosion field environment.

[0018] 2. The measurement system design of the utility model is closer to the human body, and the data acquisition module is installed inside the cavity of the simulated human-shaped target to improve the system integration.

[0019] 3. The data acquisition module of the utility model can be triggered by manual triggering, timing triggering, external level signal triggering, light triggering and other different methods, and can adapt to complex scenarios where the explosion time, location and number are difficult to determine.

[0020] 4. The utility model can install various sensors on the surface or internal skeleton of the simulated humanoid target in the preparation stage before personnel enter the site, install the data acquisition module in the cavity of the simulated humanoid target and complete the connection and fixation, shortening the working time in the harsh environment on site, and the installation structure is easy to recycle, reuse and replace.

[0021] 5. The redundant design of the wireless network and the optical fiber network complementing each other adopted in the utility model improves the reliability of data transmission. In complex dynamic explosion tests, when the explosion time, number, interval, and location cannot be known in advance, if the optical fiber network is destroyed due to the offset of the explosion point, the wireless network can be used as a complementary means to realize command sending and data feedback. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a system block diagram of an embodiment of the utility model;

[0023] Figure 2 It is a schematic diagram of the installation structure of the simulated humanoid target and the shock wave pressure sensor, the acceleration sensor, the displacement sensor, the temperature sensor and the force sensor in the embodiment of the utility model;

[0024] Figure 3 This is a diagram of chest displacement measurement results of a simulated humanoid target in an embodiment of the utility model;

[0025] Figure 4 This is a diagram of the neck force measurement result of the simulated humanoid target in the embodiment of the utility model;

[0026] Figure 5 This is a diagram of the neck torque measurement result of the simulated humanoid target in the embodiment of the utility model;

[0027] Figure 6 This is a diagram of the head acceleration measurement result of a simulated humanoid target in an embodiment of the utility model;

[0028] Figure 7 This is a diagram of chest acceleration measurement results of a simulated humanoid target in an embodiment of the utility model;

[0029] Figure 8 This is a diagram of the ambient temperature measurement result of the simulated human-shaped target in the embodiment of the utility model;

[0030] Fig. 9 It is the shock wave pressure measurement result at the location of the simulated humanoid target in the embodiment of the utility model.

[0031] In the figure: 1-simulated humanoid target, 2-shock wave pressure sensor, 3-acceleration sensor, 4-displacement sensor, 5-temperature sensor, 6-force sensor. DETAILED DESCRIPTION

[0032] In order to make the purpose, advantages and features of the utility model clearer, the following is a further detailed description of the explosion field damage parameter measurement system based on a composite human-shaped target proposed by the utility model in combination with the accompanying drawings and specific embodiments. According to the following specific implementation methods, the advantages and features of the utility model will be clearer. It should be noted that: the drawings are all in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model; secondly, the structure shown in the drawings is often a part of the actual structure.

[0033] See also Figure 1 and Figure 2In this embodiment, a blast field damage parameter measurement system based on a composite humanoid target specifically includes a simulated humanoid target 1, a shock wave pressure sensor 2, an acceleration sensor 3, a displacement sensor 4, a temperature sensor 5, a force sensor 6, a data acquisition module and a computer.

[0034] Among them, see Figure 2 The simulated humanoid target 1 has movable joints and soft bionic skin, and can be set to sit, stand and lie down. The body characteristics, surface material and weight are similar to those of a real person. The simulated humanoid target 1 includes a skeleton part, an internal organ part, a muscle part and a skin part. Figure 2 The black lines in the figure represent the skeleton of the simulated humanoid target 1, and the orange lines represent the skin. The skeleton of the simulated humanoid target 1 is made of alloy material to provide reliable support for the overall structure, and the internal organs, muscles and skin are made of transparent gel material to present the damage to human tissue in an explosion scene and have the mechanical characteristics of human tissue. Through the above settings, the simulated humanoid target 1 can be placed at the explosion site at a suitable distance and posture according to actual needs.

[0035] The shock wave pressure sensor 2, the acceleration sensor 3, the displacement sensor 4, the temperature sensor 5, and the force sensor 6 are installed on the surface or inside of the simulated humanoid target 1. By setting a plurality of prefabricated holes at different positions on the surface of the simulated humanoid target 1, the shock wave pressure sensor 2, the acceleration sensor 3, the displacement sensor 4, the temperature sensor 5, and the force sensor 6 are respectively installed in the plurality of prefabricated holes and fixed by mounting parts. The mounting parts are detachable and can be adjusted in quantity and position according to needs.

[0036] Specifically, the number of shock wave pressure sensors 2 in this embodiment is multiple, and the multiple shock wave pressure sensors 2 are respectively installed on the head, chest, abdomen, arms and legs of the simulated humanoid target 1, and their sensitive surfaces are all set flush with the surfaces of the corresponding parts of the simulated humanoid target 1; the acceleration sensor 3 adopts a three-axis accelerometer, the number of which is at least two, and is respectively installed on the head and neck of the simulated humanoid target 1; the displacement sensor 4 and the temperature sensor 5 both adopt bridge sensors, the number of which is one or more, and are respectively installed in preset holes in one or more parts of the head, chest, abdomen, arms and legs of the simulated humanoid target 1.

[0037] The shock wave pressure sensor 2, the acceleration sensor 3, the displacement sensor 4, the temperature sensor 5 and the force sensor 6 are respectively connected to the input end of the data acquisition module through signal transmission lines; an installation groove is provided on the skeleton of the simulated humanoid target 1, and the signal transmission line is provided in the installation groove.

[0038] The output end of the data acquisition module is connected to the computer for communication, and the output signals of each sensor are sent to the external computer.

[0039] Specifically, an installation cavity for installing a data acquisition module is provided inside the simulated humanoid target 1. The data acquisition module is installed in the installation cavity, and a gap space is left for the operator to perform operations such as turning the machine on and off, waiting for triggering, and plugging and unplugging cables.

[0040] Alternatively, the data acquisition module can also be placed outside in a protective heat dissipation chassis as needed. The protective heat dissipation chassis can be placed in a pit near the dummy, or placed under the simulated humanoid target 1 and grounded through a grounding pile.

[0041] Specifically, the data acquisition module includes a collection unit, a trigger unit and an antenna unit.

[0042] The acquisition unit includes a plurality of acquisition boards arranged in a stacked manner; the number of acquisition boards can be adjusted according to the actual measurement scale to ensure that the use requirements are met. The acquisition board adopts a miniaturized design and can be placed inside the simulated humanoid target 1. The input ends of the plurality of acquisition boards are respectively connected to the shock wave pressure sensor 2, the acceleration sensor 3, the displacement sensor 4, the temperature sensor 5 and the force sensor 6 through signal transmission lines, and the output ends are connected to the computer for communication;

[0043] The trigger unit is connected to the trigger end of the acquisition unit and is used to trigger the acquisition unit to perform acquisition; the trigger unit includes a manual trigger, a timing trigger, an external level signal trigger and an optical trigger; the trigger end of the acquisition board is respectively connected to the output ends of the manual trigger, the timing trigger, the external level signal trigger and the optical trigger.

[0044] Specifically, manual triggering: when the explosion time is determined, the operator can click to start collecting at any time, and can start collecting after completing the naming and storage path settings; timed triggering: the data acquisition module integrates a satellite timing unit, that is, an external antenna is connected. The antenna is facing the sky and placed in an open area without obstructions. After a certain period of time, the satellite timing function can be realized. Connect the satellite antenna in the open area to realize the corresponding function. After entering the stable timing state, the timed trigger time is manually set in seconds through the software. External level signal triggering: The data acquisition module can be connected to other instruments that can output rising edges or voltage signals of specific amplitudes at a fixed time as the trigger signal source. The trigger threshold of the data acquisition module is adjustable to ensure reliable triggering. Light triggering: The acquisition board can be triggered under the action of light generated by the explosion.

[0045] By setting different triggering modes such as manual triggering, timing triggering, external level signal triggering, light triggering, etc., it can adapt to complex scenarios where the time, location and number of explosions are difficult to determine.

[0046] The data acquisition module is connected to the external computer communication through a wireless network and / or a fiber optic network. In the field environment, the fiber optic network is laid over a long distance of 50 km and buried underground. A fiber optic storage box is left near the target, which can be cascaded and flexibly set up. The other end of the fiber optic is connected to the computer in the laboratory through a fiber optic switch. The wireless network can be implemented in the field environment by relying on local wifi, private network 4G, zigbee and other solutions. The fiber optic network and the wireless network complement each other. When the explosion point offset causes the fiber optic network to be destroyed, the wireless network can be used as a complementary means to realize command sending and data return. By setting up vehicle-mounted base stations, relay stations, etc., a transmission rate of ≥1MB can be achieved.

[0047] The data acquisition module is connected to a power module; the power module is provided with a 220V DC interface and a 5V DC USB interface, which can ensure that the system can work continuously for more than 8 hours.

[0048] The working process of the system is:

[0049] Install each sensor on the surface or inside of the simulated humanoid target 1 at a specific position, such as the middle of the forehead, chest, abdomen, arm, leg, etc. The wiring port of each sensor is connected to the L5 connector of the low-noise cable through a thread, tighten the connector and fix it, and wrap the connection with insulating tape; pass the low-noise cable head through the installation slot of the skeletal part of the simulated humanoid target 1, fix it and lead it out through the wiring port. The installation should avoid looseness and cutting wear. Extend the low-noise cable to the wiring terminal of the data acquisition module, insert it into the L5 interface of the acquisition card board, connect it to the signal input interface on the front of the data acquisition module, and connect the data acquisition module network port with a network cable to connect the device to the network. The trigger input channel of the data acquisition module is connected to the satellite antenna through the SMA interface, and the antenna is placed in an open outdoor environment. All instruments are plugged into the 10A socket through their respective 220V power cords and powered by the power supply. When the experiment is approaching, turn on the power, start all instruments and computers, and put the data acquisition module into the waiting state. Select the corresponding serial port number and baud rate for the timing trigger setting, and send a timing trigger serial port instruction accurate to seconds. Before the explosion occurs, the operator uses the control computer to manually control the data acquisition module to start acquisition, or sets the timing trigger (format: year, month, day, hour, minute, second) through the software interface, or enables the light trigger function. After the explosion occurs, the shock wave pressure, acceleration, temperature, displacement and other signals collected by each sensor are transmitted to the data acquisition module via a low-noise cable, and then transmitted back to the computer for storage. The data output format (excel or txt), timeline information (absolute time, relative time), etc. are set on the computer.

[0050] Figure 3 — Fig. 9The dummy's chest displacement, neck force and torque, head and chest acceleration, pressure, temperature, and shock wave signal waveform collected in the explosion field environment are given, providing data support for data analysis and damage assessment.

Claims

1. A blast field damage parameter measurement system based on a composite humanoid target, characterized in that: It comprises a simulated humanoid target (1), a shock wave pressure sensor (2), an acceleration sensor (3), a displacement sensor (4), a temperature sensor (5), a force sensor (6), a data acquisition module and a computer; The simulated humanoid target (1) comprises a skeleton part, an internal organ part, a muscle part and a skin part; the skeleton part is made of an alloy material, and the internal organ part, the muscle part and the skin part are all made of a transparent gel material; A plurality of prefabricated holes are arranged at different positions on the surface or frame of the simulated humanoid target (1), and the shock wave pressure sensor (2), the acceleration sensor (3), the displacement sensor (4), the temperature sensor (5) and the force sensor (6) are respectively installed in the plurality of prefabricated holes; The shock wave pressure sensor (2), the acceleration sensor (3), the displacement sensor (4), the temperature sensor (5) and the force sensor (6) are respectively connected to a plurality of input ends of the data acquisition module via signal transmission lines; a mounting groove is provided on the skeleton of the simulated humanoid target (1), and the signal transmission line is provided in the mounting groove; The output end of the data acquisition module is connected to the computer for communication, and the output signal of each sensor is sent to the computer for processing.

2. The explosion field damage parameter measurement system based on a composite humanoid target according to claim 1 is characterized in that: There are a plurality of shock wave pressure sensors (2), and the plurality of shock wave pressure sensors (2) are respectively installed in prefabricated holes in the head, chest, abdomen, arms and legs of the simulated humanoid target (1), and their sensitive surfaces are respectively arranged flush with the surfaces of the corresponding parts of the simulated humanoid target (1); The acceleration sensor (3) is a three-axis accelerometer, the number of which is at least two, and is respectively installed in prefabricated holes on the head and neck of the simulated humanoid target (1); The displacement sensor (4), temperature sensor (5) and force sensor (6) are all bridge-type sensors, and there are one or more of them respectively, and they are installed in prefabricated holes in one or more parts of the head, chest, abdomen, arms and legs.

3. The explosion field damage parameter measurement system based on a composite humanoid target according to claim 2 is characterized in that: The interior of the simulated humanoid target (1) is provided with an installation cavity for installing a data acquisition module, and the data acquisition module is installed in the installation cavity; Alternatively, it also includes an external protective heat dissipation chassis; the data acquisition module is arranged in the protective heat dissipation chassis, and the protective heat dissipation chassis is placed on one side of the simulated humanoid target (1).

4. A blast field damage parameter measurement system based on a composite humanoid target according to any one of claims 1 to 3, characterized in that: The data acquisition module includes an acquisition unit and a trigger unit; The multiple input ends of the acquisition unit are respectively connected to the shock wave pressure sensor (2), the acceleration sensor (3), the displacement sensor (4), the temperature sensor (5) and the force sensor (6) through signal transmission lines, and the output end is connected to the computer for communication; The output end of the trigger unit is connected to the trigger end of the acquisition unit, and is used to trigger the acquisition unit to perform acquisition.

5. The explosion field damage parameter measurement system based on a composite humanoid target according to claim 4 is characterized in that: The trigger unit includes a manual trigger, a timing trigger, an external level signal trigger and a light trigger; the output ends of the manual trigger, the timing trigger, the external level signal trigger and the light trigger are all connected to the trigger end of the acquisition unit.

6. The explosion field damage parameter measurement system based on a composite humanoid target according to claim 5 is characterized in that: The acquisition unit comprises a plurality of acquisition boards arranged in a stacked manner; the input interfaces of the plurality of acquisition boards are respectively connected to a shock wave pressure sensor (2), an acceleration sensor (3), a displacement sensor (4), a temperature sensor (5) and a force sensor (6) through signal transmission lines, and the output ends communicate with a computer; The trigger end of the acquisition board is connected to the output ends of the manual trigger, the timing trigger, the external level signal trigger and the optical trigger respectively.

7. The explosion field damage parameter measurement system based on a composite humanoid target according to claim 1, characterized in that: The data acquisition module is connected to the computer through a wireless network and / or an optical fiber network.

8. The explosion field damage parameter measurement system based on a composite humanoid target according to claim 1 is characterized in that: It also includes a power supply module connected to the data acquisition module; the power supply module is provided with a 220V DC interface and a 5V DC USB interface.

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