A method for generating personnel injury status in adversarial training system

Abstract

The present invention provides a method for generating personnel injuries in a confrontation training system. By establishing a shock wave distribution model, a temperature distribution model, a shrapnel dispersion model, and an injury model caused by shock waves, high temperatures, and shrapnel injuries to the human body during the explosion, the injuries and killing mechanisms caused by the explosion of the shells are associated with the injuries of the personnel. By installing a posture and position measurement unit on the personnel participating in the confrontation training, the distance of the personnel from the explosion center during the shell explosion and the posture of the personnel are associated with the injuries of the personnel. By establishing a geological feature and a fragmentation and burst model caused by the explosion, the terrain and geological characteristics of the explosion point during the shell explosion are associated with the injuries of the personnel.

Description

Technical Field

[0001] The invention relates to a method for generating personnel injury conditions in a confrontation training system. Background Art

[0002] At present, the actual combat training is developing in the direction of intelligence. Usually, direct-aiming weapons use lasers instead of ammunition for actual combat training. The specific method is to install laser transmitters on weapons and laser decoding devices on personnel and equipment. During confrontation training, weapons emit coded laser beams. If the laser decoding devices installed on personnel and equipment receive the coded laser beams, they are judged as being hit. However, the ammunition of indirect fire weapons has a long flight distance and a large parabola trajectory. Currently, actual combat training is achieved by hitting data. The specific method is to install direction-finding and angle-finding sensors on the barrel of indirect fire weapons, or to manually enter the shooting parameters. When the indirect fire weapon simulates firing, the direction angle and elevation angle of the barrel of the indirect fire weapon are sent to the computer. The computer calculates the landing point of the shell based on the three-dimensional map and the firing table of the artillery. The personnel participating in the actual combat are equipped with positioning modules, and the positioning information of the personnel is uploaded to the computer in real time. When the shell explodes, the computer determines the casualties of the personnel within the killing radius according to a certain ratio and probability based on the landing point and killing radius of the shell and the positioning information of the personnel.

[0003] The above-mentioned damage determination method for indirect fire weapons has the following shortcomings:

[0004] (1) The casualties and killing mechanisms caused by the shell explosion are not related to the injuries of the personnel. For example, in the central area of ​​the shell explosion, the main killing mechanism is shock wave and high temperature, accompanied by shell fragments; in the peripheral area, the main killing mechanism is fragments.

[0005] (2) The distance between the personnel and the explosion center and the personnel's posture when the shell exploded were not associated with the personnel's injuries. For example, when the shell exploded, if the personnel was standing, they would be seriously injured by the shock wave and high temperature, and there was a very high probability of being injured by shell fragments; when the personnel was lying down, the shock wave and high temperature injuries would be reduced, and the probability of being injured by shell fragments would also be reduced; when the personnel was lying down, if the head was facing the explosion center, the severity of the shock wave and high temperature injuries would be higher than when the feet were facing the explosion center; the farther the personnel were from the explosion center, the lower the probability of being injured by shell fragments.

[0006] (3) The terrain and geological characteristics of the explosion point when the shell exploded were not associated with the injuries to the personnel. For example, if the geological characteristics of the explosion point are rock, the casualties to personnel at locations far from the explosion center include not only shell fragments, but also broken rocks, which have a higher lethality; if the geological characteristics of the explosion point are soft sand, then the casualties to personnel at locations far from the explosion center are only shell fragments, which have a lower lethality.

[0007] Therefore, the existing damage determination methods for indirect fire weapons are not sophisticated enough. When a soldier is attacked by an indirect fire weapon, whether he correctly uses the terrain and environment to make correct tactical actions has nothing to do with the damage determination result, which makes confrontation training out of touch with actual combat requirements. Summary of the invention

[0008] Purpose of the invention: To solve the technical problems existing in the background technology, the present invention proposes a confrontation training system and an injury generation method, which measures the posture and position of personnel in real time by installing sensors on personnel; collects the shooting parameters such as the elevation angle, direction angle, type of ammunition, and charge of the indirect fire weapon barrel by installing sensors on the indirect fire weapon, or manually inputs the shooting parameters; calculates the landing point of the shell by the ballistic and damage calculation unit, and calculates the injury of the personnel according to the terrain model, shell explosion model, human body damage model, and the position and posture of the personnel. Make the actual soldier confrontation training closer to actual combat, prompt the soldiers to make reasonable tactical actions to reduce casualties, and use the injury to drive medical rescue training.

[0009] The method of the present invention comprises: establishing a trajectory and damage calculation unit, a curved fire weapon shooting element collection unit, and a personnel posture and position measurement unit;

[0010] The indirect fire weapon firing parameter collection unit is installed on the indirect fire weapon, and is used to collect firing parameter information when the indirect fire weapon is firing, and send the firing parameter information of the indirect fire weapon to the trajectory and damage calculation unit by wireless means;

[0011] The personnel posture and position measurement unit is installed on the personnel, and is used to measure the position information and posture information of the personnel, and send the position information and posture information of the personnel to the trajectory and damage calculation unit by wireless means;

[0012] The trajectory and damage calculation unit is used to calculate the specific injuries of personnel.

[0013] The shooting information includes coordinate position, elevation angle, direction angle, bullet type, and charge number.

[0014] The indirect fire weapon shooting element collection unit includes a first positioning module, an element collection unit and a first communication module;

[0015] The first positioning module uses Beidou and GPS to measure the coordinate position of the indirect fire weapon;

[0016] The various element acquisition unit manually inputs the shooting various element information of the indirect fire weapon when shooting, or automatically measures the elevation angle of the barrel by installing an inclination sensor on the barrel of the indirect fire weapon, and automatically measures the direction angle of the barrel by installing a direction finding Beidou or GPS module on the barrel of the indirect fire weapon;

[0017] The first communication module is used to wirelessly send the coordinate position, elevation angle, direction angle, type of ammunition, charge and other shooting information of the indirect fire weapon when it is fired to the trajectory and damage calculation unit.

[0018] The personnel posture and position measurement unit includes a second positioning module, a posture measurement unit and a second communication module;

[0019] The second positioning module uses Beidou and GPS to measure the coordinate position of the human body;

[0020] The posture measurement unit is composed of at least three six-axis sensors or nine-axis sensors respectively installed on the left leg, the right leg and the trunk, wherein the six-axis sensor is used to measure the angles of the three mutually perpendicular axes relative to the direction of the earth's gravity and the angle relative to the true north of the earth's geomagnetic field; the nine-axis sensor is used to measure the angles of the three mutually perpendicular axes relative to the direction of the earth's gravity, the angle relative to the true north of the earth's geomagnetic field, and the angular motion data of the three axes;

[0021] The second communication module is used to send the coordinate position, posture and orientation information of the human body to the trajectory and damage calculation unit in a wireless manner, and can receive the personnel injury results calculated by the trajectory and damage calculation unit.

[0022] The posture measurement unit performs the following steps:

[0023] Step a1, measuring the angles of three mutually perpendicular axes of the left leg, the right leg and the trunk relative to the direction of the earth's gravity respectively by a six-axis sensor or a nine-axis sensor;

[0024] Step a2, measuring the angle data of the left leg, the right leg and the trunk relative to the true north of the earth's geomagnetic field respectively by a six-axis sensor or a nine-axis sensor;

[0025] Step a3, based on the joint connection relationship between the left leg, the right leg and the trunk, calculate the posture of the human body and the orientation of each part of the human body relative to the earth's true north.

[0026] The trajectory and damage calculation unit specifically performs the following steps:

[0027] Step a1: Based on the actual measured data of shell explosion, establish a shock wave pressure distribution model of various shells at various positions in three-dimensional space within the effective killing range with the shell explosion point as the center. The calculation method is:

[0028] The shock wave pressure P at the target point is:

[0029] p=P c *K p(l，ω，t)

[0030] Where P c is the pressure at the center of the shell explosion, K p(l，ω，t) is the pressure attenuation coefficient, where l is the influence factor of the distance between the shell explosion point and the target on the target point pressure. The larger l is, the greater K p(l，ω，t) The smaller the value is, the smaller the pressure is. ω is the influence factor of the weather environment on pressure propagation, including the influence of air pressure, temperature and humidity on pressure propagation. t is the influence factor of terrain on pressure propagation. If there is no terrain obstruction, the factor t is a constant of 1. If there is terrain obstruction, it is related to the size and material of the terrain shielding object. K p(l，ω，t) The value decreases accordingly.

[0031] Step a2: Based on the actual measurement data of the shell explosion, a temperature distribution model is established for each position in the three-dimensional space within the effective killing range with the shell explosion point as the center. The calculation method is:

[0032] The temperature T of the target point is:

[0033] T=T c *K T(l，ω，t)

[0034] Where T c is the temperature at the center of the shell explosion, K T(l，ω，t) is the temperature attenuation coefficient, where l is the influence factor of the distance between the shell explosion point and the target on the target point temperature. The larger l is, the lower K T(l，ω，t) The smaller the value, the smaller the temperature. ω is the influencing factor of the weather environment on temperature propagation, including the influence of air pressure, temperature, and humidity on temperature propagation. If there is no terrain obstruction, the factor t is a constant of 1. If there is terrain obstruction, it is related to the size and material of the terrain shielding object. K p(l，ω，t) The value decreases accordingly.

[0035] Step a3: Based on the actual measurement data of the shell explosion, a lethality model of fragments or projectiles at various positions in the three-dimensional space when various shells explode within the effective killing range is established with the shell explosion point as the center. The calculation method is:

[0036] The killing rate of shrapnel to the target point H b for:

[0037] Hb =P b *K b(l，ω，t) Where P b Indicates the base lethality rate of shell fragments; K b(l，ω，t) It represents the lethality coefficient of shell fragments, l is the influence factor of the distance between the shell explosion point and the target on the lethality coefficient of shell fragments, the larger l is, the greater K b(l，ω，t) The smaller the value, the smaller the impact factor of weather environment on the lethality coefficient of artillery shell fragments, including the impact of air pressure and wind speed on the flight speed of shrapnel. If there is no terrain obstruction, the factor t is a constant of 1. If there is terrain obstruction, it is related to the size and material of the terrain shielding object, K p(l，ω，t) The value decreases accordingly.

[0038] Step a4: Based on the actual measurement data of artillery explosions, a rock fragmentation and ejection lethality model is established for the density, direction and velocity distribution of fragments of rocks, soil and gravel at various locations in three-dimensional space with the explosion point as the center under various explosion equivalents in typical geological features such as gravel, mountainous and muddy lands. The calculation method is:

[0039] The killing rate of crushed stone to the target point H s for:

[0040] H s =P s *K s(l，ω，t) *K z

[0041] Where P s Indicates the base kill rate when the shell explodes on the rock; K s(l，ω，t) represents the lethality coefficient of the stone burst, where l is the influence factor of the distance between the shell explosion point and the target on the target point lethality. The larger l is, the greater K s(l，ω，t) The smaller the value is, the faster the speed of stone crushing will be. ω is the factor affecting the weather environment on the stone crushing speed, including the influence of air pressure and wind speed on the stone crushing speed. t is the factor affecting the stone crushing speed. If there is no terrain obstruction, the factor t is a constant of 1. If there is terrain obstruction, it is related to the size and material of the terrain shielding object. K p(l，ω，t) The value decreases accordingly. z Indicates the lethality coefficient of the mass and hardness of the gravel to the human body. The lighter the mass, the smaller the hardness. z The smaller the value of;

[0042] Step a5: Based on the injury mechanism of the human body in military medicine, a set X1 of various injuries caused when various parts of the human body are subjected to shock wave pressures of various directions and intensities is established, such as fractures, internal organ concussion damage, etc.; a set X2 of various injuries caused when various parts of the human body are burned by flames of various directions and temperatures, such as burns and scalds, etc.; and a set X3 of various injuries caused when various parts of the human body are pierced by fragments of various directions, various speeds, and various sizes, such as muscle penetration injuries, organ penetration injuries, etc.;

[0043] Step a6: After the indirect fire weapon is fired, the trajectory and damage calculation unit receives the firing parameter information of the indirect fire weapon, and calculates the landing point of the shell according to the actual trajectory of the indirect fire weapon and the three-dimensional map of the confrontation training site;

[0044] Step a7: The trajectory and damage calculation unit calculates the distance between the personnel and the explosion point, and the position relationship of the human body parts exposed to the explosion killing range relative to the explosion point in the three-dimensional space based on the personnel position information and posture information received from the personnel posture and position measurement unit in combination with the three-dimensional map model;

[0045] Step a8: If the exposed part of the personnel is within the killing range of the shell shock wave, the shock wave pressure P of the target point is calculated according to the calculation method of step a1, and the injury related to the shock wave killing is selected from the set X1;

[0046] Step a9: If the exposed part of the personnel is within the high temperature killing range of the shell, the temperature T of the target point is calculated according to the calculation method of step a2, and the injury related to burns is selected from the set X2;

[0047] Step a10: If the exposed part of the person is within the killing range of the shell fragments, the injury of the person is calculated as follows: draw a sphere with the explosion point as the center and the distance between the explosion point and the person as the radius; calculate the projection and projection area of ​​the exposed part of the human body on the sphere according to the posture of the human body; calculate the distribution density of the shrapnel on the sphere according to the shrapnel dispersion model of the shell; the calculation formula for the probability of the exposed part of the human body being hit by shrapnel is as follows:

[0048] A1=A2×H b

[0049] Among them, A1 represents the hit probability, and A2 represents the projection area of ​​the exposed part of the human body on the sphere;

[0050] If the human body is hit by shrapnel, then based on the direction, speed and size of the shrapnel injury to the human body part, select from the set X3 the injury related to the piercing injury caused by the shrapnel;

[0051] Step a11: If the exposed part of the person is within the killing range of the ejected rocks, soil, and gravel, the hit probability is calculated according to the method of step a10. If the human body is hit by the gravel, the exposed part is selected from the set X3 to produce injuries related to the piercing injury caused by the fragments according to the direction, speed, and size of the human body part being injured by the gravel;

[0052] Step a12: The injuries in steps a8, a9, a10 and a11 are integrated to form an injury condition, and according to the definition of injury condition in military medicine, it is determined whether the person is in a state of death, serious injury, slight injury or no injury;

[0053] Step a13: The trajectory and damage calculation unit sends the personnel's injury status and injury results to the corresponding personnel. If the personnel enters the death state, they will lose all combat capabilities; if they enter the injured state, they will lose all or part of their combat capabilities and all or part of their mobility capabilities depending on the injured part and the severity of the injury.

[0054] The present invention has the following beneficial effects: (1) by establishing a shock wave distribution model, a temperature distribution model, a shrapnel dispersion model, and an injury model of a human body caused by shock waves, high temperatures, and shrapnel injuries during a shell explosion, the injuries and injury mechanisms caused by a shell explosion are associated with the injuries of personnel.

[0055] (2) By installing posture and position measurement units on personnel participating in confrontation training, the distance between the personnel and the center of the explosion when the shell exploded and the personnel's posture were correlated with the personnel's injuries.

[0056] (3) By establishing a model of geological characteristics and the fragmentation and projection produced by the explosion, the terrain and geological characteristics of the explosion point when the shell exploded were correlated with the injuries of the personnel.

[0057] This technical solution can effectively solve the problem that the existing indirect fire weapon damage judgment method is not refined enough. It encourages soldiers to correctly use the terrain and environment to make correct tactical actions when attacked by indirect fire weapons to reduce casualties and make confrontation training closer to actual combat requirements. In addition, the injury situation can be used to guide the exercise of medical rescue operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, and the above and / or other advantages of the present invention will become more clear.

[0059] Figure 1 The figure is a schematic diagram of the composition of an adversarial training system of the present invention.

[0060] Figure 2 This is a schematic diagram of the composition of the indirect fire weapon shooting element collection unit.

[0061] Figure 3 Schematic diagram of the composition of the personnel posture and position measurement unit.

[0062] Figure 4 Schematic diagram of the installation of the personnel posture and position measurement unit.

[0063] Figure 5 This is the flow chart of human posture measurement. DETAILED DESCRIPTION

[0064] Figure 1 The figure shows a schematic diagram of a method for generating personnel injuries in a confrontation training system provided by the present invention, which includes a trajectory and damage calculation unit 1, an indirect fire weapon shooting element collection unit 3, and a personnel posture and position measurement unit 2.

[0065] The indirect fire weapon shooting parameter collection unit 3 is installed on the indirect fire weapon, and is used to collect the coordinate position, elevation angle, direction angle, bullet type, charging number and other shooting parameter information of the indirect fire weapon when the indirect fire weapon is firing, and send the coordinate position and shooting parameter information of the indirect fire weapon to the trajectory and damage calculation unit wirelessly.

[0066] Figure 2 As shown, the indirect fire weapon shooting element collection unit 3 is composed of a positioning module 32, an element collection unit 31 and a communication module 33.

[0067] The positioning module 32 uses a Beidou or GPS positioning module to measure the coordinate position of the indirect fire weapon.

[0068] The various element collection unit 31 is used to collect various shooting element information such as the elevation angle, direction angle, type of projectile, and charge of the indirect fire weapon barrel when the indirect fire weapon is fired.

[0069] Embodiment 1 of the parameter acquisition unit 31 is an automatic measurement method: installing a tilt sensor on the barrel to measure the elevation angle of the barrel; installing a dual-antenna Beidou or GPS direction-finding module on the barrel to measure the direction angle of the barrel; and manually selecting the type of ammunition and charge to be launched.

[0070] The second embodiment of the element collection unit 31 is a manual input method: manually inputting the shooting element information such as the elevation angle, direction angle, type of projectile, and charge of the indirect fire weapon barrel when the indirect fire weapon is fired.

[0071] The communication module 33 wirelessly sends the coordinate position, elevation angle, direction angle, bullet type, charge and other shooting information of the indirect fire weapon to the trajectory and damage calculation unit 1.

[0072] Figure 3As shown, the posture and position measurement unit 2 is composed of a positioning module 22, a posture measurement unit 21 and a communication module 23. It is installed on each person who participates in the confrontation training.

[0073] The positioning module 22 uses a Beidou or GPS positioning module to measure the coordinate position of the indirect fire weapon.

[0074] The attitude measurement unit 21 is a six-axis sensor or a nine-axis sensor. The six-axis sensor includes a three-axis acceleration sensor and a three-axis magnetic induction sensor, and the nine-axis sensor includes a three-axis gyroscope, a three-axis acceleration sensor, and a three-axis magnetic induction sensor. The three-axis acceleration sensor can measure the angles of three mutually perpendicular axes relative to the direction of the earth's gravity, the three-axis magnetic induction sensor can measure the angles of three mutually perpendicular axes relative to the true north of the earth's magnetic field, and the three-axis gyroscope can measure the angular motion data of the three axes.

[0075] Figure 4 As shown, there are at least three posture measurement units 21, which are installed on the left leg, right leg and trunk respectively, and can measure the acceleration of the legs and trunk relative to the direction of the earth's gravity and the direction relative to the earth's true north when the human body is in the main postures such as standing, lying down, kneeling, and leaning over. If it is necessary to identify the posture of the arm, a posture measurement unit 21 can be added to the arm. If it is necessary to identify the posture of the head, a posture measurement unit 21 can be added to the head.

[0076] Figure 5 The figure is a flow chart of human posture measurement. The posture measurement method includes the following steps:

[0077] (1) using a six-axis sensor or a nine-axis sensor to measure the angles of the three mutually perpendicular axes of the left leg, the right leg, and the trunk relative to the direction of the earth's gravity;

[0078] (2) using a six-axis sensor or a nine-axis sensor to measure the angle data of the left leg, the right leg, and the trunk relative to the true north of the Earth's geomagnetic field;

[0079] (3) Based on the joint connections between the left leg, right leg, and torso, the posture of the human body and the orientation of each part of the human body relative to the Earth's true north are calculated.

[0080] For example, if Figure 4When the acceleration value of the Y axis of the left leg posture measurement unit 21 is close to 1g, the acceleration value of the Y axis of the right leg posture measurement unit 21 is close to 1g, and the acceleration value of the Y axis of the torso posture measurement unit 21 is close to 1g, it can be determined that the human body is in an upright standing state; if the acceleration value of the Y axis of the left leg posture measurement unit 21 is close to 1g, the acceleration value of the Y axis of the right leg posture measurement unit 21 is close to 1g, and the acceleration value of the Z axis of the torso posture measurement unit 21 is close to -1g, it can be determined that the human body is in a prone standing state; if the acceleration value of the Z axis of the left leg posture measurement unit 21 is close to -1g, the acceleration value of the Z axis of the right leg posture measurement unit 21 is close to -1g, and the acceleration value of the Z axis of the torso posture measurement unit 21 is close to -1g, it can be determined that the human body is in a prone lying state.

[0081] According to the acceleration values ​​of the three mutually perpendicular axes of the attitude measurement unit 21, combined with the angular velocity of the three axes and the magnetic sensor data of the three axes, a general attitude fusion algorithm is adopted to measure the pitch angle, roll angle and heading angle of each attitude measurement unit 21. According to the joint connection relationship between the left leg, right leg, trunk, arms, head and other parts, various postures of the human body and the orientation relative to the true north of the earth can be calculated.

[0082] The communication module 23 is used to send the coordinate position, posture and orientation information of the human body to the trajectory and damage calculation unit 1 in a wireless manner, and can receive the personnel injury results calculated by the trajectory and damage calculation unit 1.

[0083] The method for generating injury conditions comprises the following steps:

[0084] (1) The shock wave distribution model of the shell explosion is established by using the shock wave pressure distribution data at each position in the three-dimensional space within the effective killing range measured during the shell finalization test. The calculation method is:

[0085] Shock wave pressure at the target point

[0086] P=P c *K p(l，ω，t)

[0087] Where P c is the pressure at the center of the shell explosion, K p(l，ω，t) is the pressure attenuation coefficient, where l is the influence factor of the distance between the shell explosion point and the target on the target point pressure. The larger l is, the greater K p(l，ω，t) The smaller the value is, the smaller the K is. ω is the influence factor of the weather environment on pressure propagation, including the influence of air pressure, temperature, and humidity on pressure propagation. t is the influence factor of terrain on pressure propagation. If there is terrain blocking between the explosion point of the shell and the target, K p(l，ω，t)For example, under standard meteorological and air pressure conditions, the pressure attenuation coefficient K of a small-caliber 60mm mortar shell on an exposed target t0 is p(l，ω，t) It drops to 0 at 6 meters.

[0088] (2) The temperature distribution model of the shell explosion is established by using the temperature distribution data of each position in the three-dimensional space within the effective killing range measured during the shell finalization test. The calculation method is:

[0089] Temperature at target point:

[0090] T=T c *K T(l，ω，t)

[0091] Where T c is the temperature at the center of the shell explosion, K T(l，ω，t) is the temperature attenuation coefficient, where l is the influence factor of the distance between the shell explosion point and the target on the target point temperature. The larger l is, the lower K T(l，ω，t) The smaller the value is, the smaller the temperature propagation is; ω is the influencing factor of the weather environment on temperature propagation, including the influence of air pressure, temperature, and humidity on temperature propagation; t is the influencing factor of terrain on temperature propagation. If there is terrain blocking between the explosion point of the shell and the target, K T(l，ω，t) For example, under standard meteorological and air pressure ω0 conditions, the temperature attenuation coefficient K of a small-caliber 60mm mortar shell on an exposed target t0 T(l，ω，t) Drops to 0 at 10 meters.

[0092] (3) A shrapnel lethality model is established based on the density, direction and velocity distribution data of fragments / projectiles at various positions in three-dimensional space when various shells explode within the effective killing range, which are measured during the shell finalization test.

[0093] The calculation method is:

[0094] The killing rate of shrapnel to the target point:

[0095] H b =P b *K b(l,w,，t)

[0096] Where P b Indicates the base lethality rate of shell fragments; K b(l，ω,，t) It represents the lethality coefficient of shell fragments, where l is the influence factor of the distance between the shell explosion point and the target on the lethality coefficient of shell fragments. The larger l is, the greater K b(l，ω,，t) The smaller the value is, the smaller the impact factor of weather environment on the lethality coefficient of artillery shell fragments is, including the impact of air pressure and wind speed on the flying speed of shrapnel; t is the impact factor of terrain on the lethality coefficient of artillery shell fragments. If there is terrain blocking between the explosion point of the artillery shell and the target, K b(l，ω，t)For example, under standard meteorological and air pressure ω0 conditions, the fragmentation lethality coefficient K of a small-caliber 60mm mortar shell to an exposed target t0 is b(l，ω，t) It drops to 0 at 18 meters; for any distance l, for personnel in fortifications, t max The fragmentation lethality coefficient K b(l，ω，t) Reduced to 0.

[0097] (4) The density, direction and velocity distribution data of the fragments of rocks, soils and gravels of various hardness and strength at various explosion equivalents measured during the type test of artillery shells in typical areas such as gravel, mountainous areas and muddy land at various locations in three-dimensional space after being broken with the explosion point as the center are used to establish a model for the damage rate of rock crushing, gravel and other materials associated with geological characteristics. The calculation method is as follows:

[0098] The killing rate of gravel on the target point:

[0099] H s =P s *k s(l，w，t )*K z

[0100] Where P s Indicates the base kill rate when the shell explodes on the rock; K s(l，ω，t) represents the lethality coefficient of the stone burst, where l is the influence factor of the distance between the shell explosion point and the target on the target point lethality. The larger l is, the greater K s(l，ω，t) The smaller the value is, the higher the impact of weather conditions on the speed of stone crushing, including the impact of air pressure and wind speed on the speed of stone crushing. t is the impact factor of terrain on the speed of stone crushing. If there is terrain blocking between the explosion point of the shell and the target, K s(l，ω，t) The smaller the value, the K z Indicates the lethality coefficient of the mass and hardness of the gravel to the human body. The lighter the mass, the smaller the hardness. z For example, under standard meteorological and air pressure conditions of ω0, the fragmentation lethality coefficient K of a small-caliber 60mm mortar shell to an exposed target t0 is s(l，ω，t) It drops to 0 at 18 meters; for any distance l, for personnel in the fortification above the general level, t x The fragmentation lethality coefficient K s(l，ω，t) Reduced to 0.

[0101] (5) Establish an injury collection based on military medical data on injuries caused by shock waves, high temperatures, and shrapnel to the human body.

[0102] For example, if the human head is exposed to the effective range of the shock wave, depending on the intensity of the shock wave on the head, it may cause extensive brain damage, brain stem injury, skull fracture, brain contusion and laceration, etc. If the human trunk is exposed to the effective range of the shock wave, depending on the intensity of the shock wave on the internal organs, it may cause rupture of heart and blood vessels, rupture of bilateral lung parenchyma, rupture of main bronchus, complete spinal cord injury, complete cauda equina injury, rupture of abdominal organs, extensive damage to abdominal organs, etc. If the limbs are exposed to the effective range of the shock wave, depending on the intensity of the shock wave on the limbs, it may cause limb amputation, fracture, large blood vessel injury, etc.

[0103] For example, when the human body is exposed to the effective range of high temperature, depending on the temperature and time of the high temperature on the head, trunk and limbs, injuries such as third-degree burns, second-degree burns and first-degree burns may occur on the head, face, trunk and limbs.

[0104] For example, if the human head is exposed to the effective range of shrapnel and lithotripsy, depending on the direction and speed of the shrapnel injury to the head, it may cause penetrating brain injury, severe brainstem injury, extensive brain damage, skull base fracture combined with carotid artery injury, diffuse axonal injury, etc. If the human trunk is exposed to the effective range of shrapnel and lithotripsy, depending on the direction and speed of the shrapnel injury to the trunk, it may cause rupture of the heart, aorta, pulmonary artery and vein, vena cava, heart rupture with cardiac tamponade, bilateral bronchial rupture, complete rupture or transection of the main bronchus, bilateral multiple rib fractures with damage to important organs, unstable spinal fractures, incomplete or complete spinal cord injury, complete cauda equina injury, severe liver laceration, severe spleen laceration, involvement of splenic hilum or splenic segment vessels, severe kidney laceration with urine extravasation, renal pedicle avulsion, severe pancreatic laceration, extensive mesenteric laceration, etc. If the limbs are exposed to the effective range of shrapnel and stone debris, depending on the direction and speed of the shrapnel injuries to the limbs, injuries such as extensive limb damage, limb separation with shock, extensive limb damage, penetrating injuries, limb fractures with major blood vessel damage, and severe tissue defects may occur.

[0105] The shock wave injury model is a collection of various injuries caused when various parts of the human body are subjected to shock wave pressures of various directions and intensities; the high temperature injury model is a collection of various injuries caused when various parts of the human body are burned by flames of various directions and temperatures; the fragment killing model is a collection of various injuries caused when various parts of the human body are pierced by fragments of various directions, speeds and sizes.

[0106] (6) After the indirect fire weapon is fired, the trajectory and damage calculation unit 1 receives the firing information such as the coordinate position, barrel direction angle, elevation angle, shell type, and charge number of the indirect fire weapon at the time of firing, and then calculates the actual landing point of the shell based on the actual ballistic curve of the indirect fire weapon shell and the three-dimensional map of the confrontation training site.

[0107] (7) The trajectory and damage calculation unit 1 calculates the distance between the personnel and the explosion point, as well as the positional relationship of each part of the human body exposed to the explosion killing range relative to the explosion point in three-dimensional space based on the received position information and posture information of the personnel in combination with the three-dimensional map model.

[0108] (8) Based on the shock wave distribution model of the shell explosion and the injury model of the human body caused by the shock wave, calculate whether the exposed part of the person is within the shock wave injury range; if it is within the shock wave injury range, according to the direction and intensity of the shock wave pressure on the human body part, if the head is injured, select one or more injuries such as extensive brain damage, brain stem injury, skull fracture, brain contusion and laceration from step 5. If the human trunk is exposed to the effective range of the shock wave, select one or more injuries such as rupture of heart and blood vessels, rupture of bilateral lung parenchyma, rupture of main bronchus, complete spinal cord injury, complete cauda equina injury, rupture of abdominal organs, and extensive damage to abdominal organs. If the limbs are exposed to the effective range of the shock wave, according to the intensity of the shock wave on the limbs, one or more injuries such as limb amputation, fracture, and large blood vessel injury may occur.

[0109] (9) Based on the high temperature distribution model of the artillery shell explosion and the injury model of the human body caused by high temperature, calculate whether the exposed part of the person is within the high temperature killing range; if it is within the high temperature killing range, based on the direction and temperature of the flame burning the human body part, if the head and face are injured, select one of the following from step 5 to produce first degree burns, second degree burns, or third degree burns on the head and face; if the limbs are injured, select one of the following from step 5 to produce first degree burns, second degree burns, or third degree burns on the limbs; if the trunk is injured, select one of the following from step 5 to produce first degree burns, second degree burns, or third degree burns on the trunk.

[0110] (10) Based on the shrapnel dispersion model of the artillery shell explosion and the injury model of the human body caused by shrapnel, calculate whether the exposed part of the person is within the shrapnel injury range. If it is within the shrapnel injury range, calculate the injury of the human body in the following way: draw a sphere with the explosion point as the center and the distance between the explosion point and the person as the radius; calculate the projection and projection area of ​​the exposed part of the human body on the sphere based on the posture of the human body; calculate the distribution density of the shrapnel on the sphere based on the shrapnel dispersion model of the artillery shell; the calculation formula for the probability of the exposed part of the human body being hit by shrapnel is as follows:

[0111] Hit probability = projection area of ​​the exposed part of the human body on the sphere × density of shrapnel on the sphere

[0112] If the human body is hit by shrapnel, according to the direction, speed and size of the shrapnel injury to the exposed parts of the human body, if the human head is exposed to the effective range of the shrapnel injury, one or more injuries such as craniocerebral penetrating injury, severe brainstem injury, extensive craniocerebral damage, skull base fracture combined with carotid artery injury, diffuse axonal injury, etc. are selected from step 5. If the human trunk is exposed to the effective range of the shrapnel injury and lithotripsy, one or more injuries such as heart, aorta, pulmonary artery and vein, vena cava rupture, heart rupture with heart tamponade, bilateral bronchial rupture, complete rupture or transection of the main bronchus, bilateral multiple rib fractures with important organ damage, unstable spinal fracture, incomplete or complete spinal cord injury, complete cauda equina injury, severe liver laceration, severe spleen laceration, involvement of splenic hilum or splenic segment vessels, severe kidney laceration with urine extravasation, renal pedicle avulsion, severe pancreatic laceration, extensive mesenteric laceration, etc. may occur. If the limbs are exposed to the effective range of fragmentation and lithotripsy, one or more of the following injuries may occur: extensive limb damage, limb separation with shock, extensive limb damage, penetrating injuries, limb fractures with major vascular damage, severe tissue loss, etc.

[0113] (11) Based on the geological characteristics and the fragmentation and projection model produced by the explosion, calculate whether the exposed part of the person is within the killing range of the broken rocks, soil, and sand and gravel. If it is within the killing range, calculate the hit probability according to the method of step (10). If the human body is hit by the broken stones, then according to the direction, speed, and size of the human body part being killed by the broken stones, the corresponding part is injured according to step (5).

[0114] (12) The injury conditions in steps (8), (9), (10) and (11) are integrated, and based on the definition of injury in military medicine, it is determined whether the person is dead, seriously injured, slightly injured or not injured.

[0115] (13) The trajectory and damage calculation unit 1 sends the personnel's injury status and injury results to the corresponding personnel. If the personnel enters the death state, they will lose all combat capabilities; if they enter the injury state, they will lose all or part of their combat capabilities and all or part of their mobility capabilities according to the injured part and the injury severity.

[0116] The present invention provides a method for generating personnel injury status in a confrontation training system. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented using existing technologies.

Claims

1. A method for generating personnel injury status in an adversarial training system, characterized in that: include: Establish trajectory and damage calculation unit, indirect fire weapon shooting parameter collection unit, personnel posture and position measurement unit; The indirect fire weapon firing parameter collection unit is installed on the indirect fire weapon, and is used to collect firing parameter information when the indirect fire weapon is firing, and send the firing parameter information of the indirect fire weapon to the trajectory and damage calculation unit by wireless means; The personnel posture and position measurement unit is installed on the personnel, and is used to measure the position information and posture information of the personnel, and send the position information and posture information of the personnel to the trajectory and damage calculation unit by wireless means; The trajectory and damage calculation unit is used to calculate the specific injuries of personnel; The trajectory and damage calculation unit specifically performs the following steps: Step a1: Based on the actual measured data of shell explosion, establish a shock wave pressure distribution model of various shells at various positions in three-dimensional space within the effective killing range with the shell explosion point as the center. The calculation method is: The shock wave pressure P at the target point is: P=P c *K p(l，ω，t) Where P c is the pressure at the center of the shell explosion, K p(l，ω，t) is the pressure attenuation coefficient, where l is the influence factor of the distance between the shell explosion point and the target on the target point pressure. The larger l is, the greater K p(l，ω，t) The smaller the value, the lower the pressure propagation; ω is the influence factor of weather environment on pressure propagation, including the influence of air pressure, temperature and humidity on pressure propagation; t is the influence factor of terrain on pressure propagation; Step a2: Based on the actual measurement data of the shell explosion, a temperature distribution model is established for each position in the three-dimensional space within the effective killing range with the shell explosion point as the center. The calculation method is: The temperature T of the target point is: T=T c *K T(l，ω，t) Where T c is the temperature at the center of the shell explosion, K T(l，ω，t) is the temperature attenuation coefficient, where k is the influence factor of the distance between the shell explosion point and the target on the target point temperature. The larger l is, the lower K T(l，ω，t) The smaller the value, the lower the influence of the weather environment on temperature propagation, including the influence of air pressure, temperature and humidity on temperature propagation. Step a3: Based on the actual measurement data of the shell explosion, a lethality model of fragments or projectiles at various positions in the three-dimensional space when various shells explode within the effective killing range is established with the shell explosion point as the center. The calculation method is: The killing rate of shrapnel to the target point H b for: H b =P b *K b(l，ω，t) Where P b Indicates the base lethality rate of shell fragments; K b(l，ω，t) It represents the lethality coefficient of shell fragments, l is the influence factor of the distance between the shell explosion point and the target on the lethality coefficient of shell fragments, the larger k is, the larger K is. b(l，ω，t) The smaller the value, the smaller the impact factor. ω is the impact factor of weather environment on the lethality coefficient of artillery shell fragments, including the impact of air pressure and wind speed on the flight speed of shrapnel. Step a4: Based on the actual measurement data of artillery shell explosions, a rock fragmentation and ejection lethality model is established under typical geological characteristics. The density, direction and velocity distribution of fragments of rocks, soil and sandstone at various explosion equivalents at various positions in three-dimensional space with the explosion point as the center is calculated using the following calculation method: The killing rate of crushed stone to the target point H s for: H s =P s *K s(l，ω，t) *K z Where P s Indicates the base kill rate when the shell explodes on the rock; K s(l，ω，t) represents the lethality coefficient of the stone burst, where l is the influence factor of the distance between the shell explosion point and the target on the target point lethality. The larger l is, the greater K s(l，ω，t) The smaller the value is, the faster the speed of stone crushing will be. ω is the factor affecting the weather environment on the stone crushing speed, including the influence of air pressure and wind speed on the stone crushing speed. t is the factor affecting the terrain on the stone crushing speed. K z Indicates the lethality coefficient of the mass and hardness of the gravel to the human body. The lighter the mass, the smaller the hardness. z The smaller the value of; Step a5: Based on the human body injury mechanism in military medicine, establish a set X1 of various injuries caused when various parts of the human body are subjected to shock wave pressures of various directions and intensities; a set X2 of various injuries caused when various parts of the human body are burned by flames of various directions and temperatures; and a set X3 of various injuries caused when various parts of the human body are pierced by fragments of various directions, various speeds, and various sizes; Step a6: After the indirect fire weapon is fired, the trajectory and damage calculation unit receives the firing parameter information of the indirect fire weapon, and calculates the landing point of the shell according to the actual trajectory of the indirect fire weapon and the three-dimensional map of the confrontation training site; Step a7: The trajectory and damage calculation unit calculates the distance between the personnel and the explosion point, and the position relationship of the human body parts exposed to the explosion killing range relative to the explosion point in the three-dimensional space based on the personnel position information and posture information received from the personnel posture and position measurement unit in combination with the three-dimensional map model; Step a8: If the exposed part of the personnel is within the killing range of the shell shock wave, the shock wave pressure P of the target point is calculated according to the calculation method of step a1, and the injury related to the shock wave killing is selected from the set X1; Step a9: If the exposed part of the personnel is within the high temperature killing range of the shell, the temperature T of the target point is calculated according to the calculation method of step a2, and the injury related to burns is selected from the set X2; Step a10: If the exposed part of the person is within the killing range of the shell fragments, the injury of the person is calculated as follows: draw a sphere with the explosion point as the center and the distance between the explosion point and the person as the radius; calculate the projection and projection area of ​​the exposed part of the human body on the sphere according to the posture of the human body; calculate the distribution density of the shrapnel on the sphere according to the shrapnel dispersion model of the shell; the calculation formula for the probability of the exposed part of the human body being hit by shrapnel is as follows: A1=A2×H b Among them, A1 represents the hit probability, and A2 represents the projection area of ​​the exposed part of the human body on the sphere; If the human body is hit by shrapnel, then based on the direction, speed and size of the shrapnel injury to the human body part, select from the set X3 the injury related to the piercing injury caused by the shrapnel; Step a11: If the exposed part of the person is within the killing range of the ejected rocks, soil, and gravel, the hit probability is calculated according to the method of step a10. If the human body is hit by the gravel, the exposed part is selected from the set X3 to produce injuries related to the piercing injury caused by the fragments according to the direction, speed, and size of the human body part being injured by the gravel; Step a12: The injuries in steps a8, a9, a10 and a11 are integrated to form an injury condition, and according to the definition of injury condition in military medicine, it is determined whether the person is in a state of death, serious injury, slight injury or no injury; Step a13: The trajectory and damage calculation unit sends the personnel's injury status and injury results to the corresponding personnel. If the personnel enters the death state, they will lose all combat capabilities; if they enter the injured state, they will lose all or part of their combat capabilities and all or part of their mobility capabilities depending on the injured part and the severity of the injury.

2. The method according to claim 1, characterized in that The shooting information includes coordinate position, elevation angle, direction angle, bullet type, and charge number.

3. The method according to claim 2, characterized in that The indirect fire weapon shooting element collection unit includes a first positioning module, an element collection unit and a first communication module; The first positioning module uses Beidou and GPS to measure the coordinate position of the indirect fire weapon; The various element acquisition unit manually inputs the shooting information of the indirect fire weapon when shooting, or automatically measures the elevation angle of the barrel by installing an inclination sensor on the barrel of the indirect fire weapon, and automatically measures the direction angle of the barrel by installing a direction finding Beidou or GPS module on the barrel of the indirect fire weapon; The first communication module is used to wirelessly send the shooting parameter information of the indirect fire weapon to the trajectory and damage calculation unit.

4. The method according to claim 3, characterized in that The personnel posture and position measurement unit includes a second positioning module, a posture measurement unit and a second communication module; The second positioning module uses Beidou and GPS to measure the coordinate position of the human body; The posture measurement unit is composed of at least three six-axis sensors or nine-axis sensors respectively installed on the left leg, the right leg and the trunk, wherein the six-axis sensor is used to measure the angles of the three mutually perpendicular axes relative to the direction of the earth's gravity and the angle relative to the true north of the earth's geomagnetic field; the nine-axis sensor is used to measure the angles of the three mutually perpendicular axes relative to the direction of the earth's gravity, the angle relative to the true north of the earth's geomagnetic field, and the angular motion data of the three axes; The second communication module is used to send the coordinate position, posture and orientation information of the human body to the trajectory and damage calculation unit in a wireless manner, and can receive the personnel injury results calculated by the trajectory and damage calculation unit.

5. The adversarial training system according to claim 4, characterized in that: The posture measurement unit performs the following steps: Step a1, measuring the angles of three mutually perpendicular axes of the left leg, the right leg and the trunk relative to the direction of the earth's gravity by means of a six-axis sensor or a nine-axis sensor; Step a2, measuring the angle data of the left leg, the right leg and the trunk relative to the true north of the earth's magnetic field respectively by a six-axis sensor or a nine-axis sensor; Step a3, based on the joint connection relationship between the left leg, the right leg and the trunk, calculate the posture of the human body and the orientation of each part of the human body relative to the earth's true north.

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