Human thoracic shock wave injury detection simulation target and detection method

Abstract

The invention discloses a human thoracic shock wave injury detection simulation target and a detection method, and aims to solve the problems that the current detection method is large in deviation, complex in test process and difficult to adapt to severe environments. The target is composed of a packaging shell, an equivalent chest wall, a test module and a fixed target frame. The packaging shell is a cuboid box with an upper face and a lower face but not side faces, and the equivalent chest wall is composed of a front elastic membrane, a rear elastic membrane, a left elastic membrane and a right elastic membrane which are installed on the four side faces of the packaging shell respectively. The testing module is installed in the packaging shell and used for detecting movement of the equivalent chest wall. The fixed target frame is used for fixing the target. The detection method comprises the following steps: simulating the chest wall of a human body by using the elastic diaphragm, controlling the indicating lamp with the corresponding color to be normally on by detecting the peak movement speed of the elastic diaphragm under the action of shock waves, and quickly and intuitively obtaining the injury degree of the chest of the human body at the position of the target. The method can be used for rapid detection of human thoracic shock wave injury in a severe environment, and is simple, efficient and low in cost.

Description

Technical Field

[0001] The invention belongs to the field of measurement and detection, and particularly relates to a simulation target for detecting human chest cavity damage under the action of explosion shock waves and a damage detection method. Background Art

[0002] At present, explosion injuries have become the main cause of injury and death. The human chest cavity contains organs such as the lungs, heart, and trachea, which are easily damaged by the impact of the explosion shock wave. Therefore, accurate and rapid detection of the degree of damage to the human chest cavity under the action of the explosion shock wave is of great significance for personnel treatment and equipment power identification.

[0003] At present, there are two main methods for detecting the damage effect of ammunition on the human body: animal test method and equivalent model method. The animal test method uses animals that are highly similar to humans in terms of organ function, structure, and damage threshold to conduct explosion tests. After the test, the damage of the test animals is detected by external observation and dissection, and then the damage of the human body under the same load conditions is obtained. This method can obtain the true situation of explosion injuries, but due to individual differences in test animals, there are difficulties in the repeatability and standardization of the test. In addition, the correspondence between the data obtained from animal tests and human injuries usually has a large deviation, which cannot accurately reflect the damage of the human body. The equivalent model method usually requires the use of a dummy or other device to use an electrical pressure sensor to measure the shock wave pressure acting on the chest, and then obtain the human injury level by comparing with the injury curve or calculating the injury index. It mainly includes the Bowen injury curve, the Axelsson model, and the Stuhmiller model. This method requires the use of an electrical pressure sensor to measure the shock wave pressure on the human chest. The pressure obtained by the test is usually the wall reflection pressure, which is not completely equivalent to the actual pressure acting on the human body. In addition, most of the tests are single-point tests and cannot accurately reflect the damage of the shock wave to the human body in multiple directions. In addition, the deployment of electrical pressure sensors in harsh environments such as Gobi, desert or plateau is very difficult and costly.

[0004] Therefore, the traditional human chest shock wave injury detection method has the problems of large deviation from the real human injury, complex test process, and difficulty in adapting to harsh environments. If a human chest shock wave injury detection simulation target and evaluation method with accurate and reliable test results, simple and easy test process, and adaptability to harsh target environment can be developed, it will be of great significance for accurately evaluating the degree of damage to the human chest under the action of shock waves. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a simulated target and a detection method for detecting chest shock wave injuries of human body, so as to solve the problems existing in the current chest shock wave injury detection methods of human body, such as large deviation from the actual injury of human body, complicated testing process, and difficulty in adapting to harsh environments. The detection device and method can be used for rapid detection of chest shock wave injuries of human body in harsh environments such as range testing, exercises and training, and has the characteristics of simple and efficient testing process, strong environmental adaptability, and low cost.

[0006] The present invention provides a device and a method, which utilizes an elastic diaphragm to simulate the human chest wall, controls the lighting of an indicator light of a corresponding color by detecting the peak movement speed of the elastic diaphragm under the action of a shock wave, and combines a "correspondence table of indicator light color and chest cavity injury degree" to quickly and intuitively obtain the injury degree of the human chest cavity at the target location.

[0007] The human chest shock wave injury detection simulation target of the present invention is composed of a packaging shell, an equivalent chest wall, a test module and a fixed target frame. The packaging shell is a rectangular box with an upper and lower surface but no side, and is composed of a mounting frame, an upper end cover, a lower end cover, a support tube and a fixed base. The packaging shell is made of metal or organic glass, and the density ρ1 is required to meet ρ1≥2.0g / cm 3 , the yield strength σ1 satisfies σ1 ≥ 200MPa, and it is required that no plastic deformation occurs under the action of the shock wave. The equivalent chest wall is in the shape of a square plate, and is composed of a front elastic diaphragm, a rear elastic diaphragm, a left elastic diaphragm, and a right elastic diaphragm, which are respectively installed on the four sides of the packaging shell to simulate the front chest wall, rear chest wall, left chest wall and right chest wall of the human body. The test module is installed inside the packaging shell to detect the movement of the equivalent chest wall. The fixed target frame is installed at the bottom of the packaging shell to fix the target.

[0008] The installation frame is a square frame made of 12 rectangular rods assembled and welded together. The rectangular rods are solid, with a square cross section and a side length of s. 111 , 40mm≤s 111 ≤60mm. The length, width and height of the area enclosed by the side of the installation frame are l 11 、w 11 、h 11 According to GB / T10000-2023 "Chinese Adult Body Size Standard", the 50th percentile adult male chest size is used as the benchmark to determine 236mm≤l 11 ≤382mm, 172mm≤w 11 ≤270mm, 180mm≤h 11 ≤250mm. The outer surfaces of the 12 cuboid rods of the mounting frame are evenly distributed with N (5≤N≤10) first threaded mounting holes, and the diameter of the first threaded mounting holes is d 112 , 8mm≤d112 ≤12mm, depth h 112 , 8mm≤h 112 ≤15mm, used to install the equivalent chest wall, upper end cover and lower end cover.

[0009] The upper end cover is square plate-shaped, with a length of l 12 = l 11 +2s 111 , width w 12 =w 11 +2s 111 , thickness is h 12 There are evenly distributed fixing holes on the four sides of the upper end cover. The fixing holes are through holes with a diameter of d 121 , connected and fixed with the mounting frame by bolts. There are evenly distributed fixing holes in the center of the upper end cover. The fixing holes are through holes with a diameter of d 122 , connected and fixed with the support tube by bolts. A square hole is opened in the center of the upper end cover, with a side length of s 123 , which can be used for the fixed target frame to pass through. The structure of the lower end cover is consistent with that of the upper end cover.

[0010] The upper end cover is square plate-shaped, with a length of l 12 = l 11 +2s 111 , width w 12 =w 11 +2s 111 , thickness is h 12 , 3mm≤h 12 ≤6mm. The first fixing holes are evenly distributed on the four sides of the upper end cover. The first fixing holes are through holes with a diameter of d 121 =d 112 The upper end cover is connected and fixed to the upper end surface of the mounting frame by bolts passing through the first fixing hole. A square hole is opened in the center of the upper end cover, and the side length of the square hole is s 123 , 40mm≤s 123 ≤60mm, which can be used for fixing the target frame. There are 4 second fixing holes evenly distributed on the four corners of the square hole. The second fixing holes are through holes with a diameter of d 122 , 8mm≤d 122 ≤12mm, the upper end cover is connected to the support tube by bolts passing through the second fixing hole. The lower end cover has the same structure as the upper end cover.

[0011] The support tube is in the shape of a square tube with openings at the top and bottom, and consists of a center tube, a mounting platform, an upper flange, and a lower flange. The center tube is a square tube with openings at the top and bottom, and the inner side length of the center tube is s 141 =s 123 , length l 141 =h 11 +2s 111 , wall thickness is h 141 , 2mm≤h 141≤3mm, the inner space of the center tube is for the fixed target holder to pass through. The installation platform is in the shape of a square ring, which is welded to the center of the outer side of the center tube. The inner side length of the installation platform is s 1421 =s 141 +2h 141 , the outer length is s 1422 , 60mm≤s 1422 ≤80mm, height h 142 , 40mm≤h 142 ≤50mm. There is a second threaded mounting hole at the center of each of the four sides of the mounting platform. The diameter of the second threaded mounting hole is d 1421 , 5mm≤d 1421 ≤10mm, depth h 1421 , 5mm≤h 1421 ≤10mm, displacement sensors are installed in the four second threaded mounting holes. The upper flange and the lower flange are both square rings, and the upper flange and the lower flange have the same structure. The inner side length of the upper flange is s 1431 =s 141 +2h 141 , the outer length is s 1432 , 60mm≤s 1432 ≤80mm, thickness h 143 , 2mm≤h 143 ≤3mm. There are 4 third fixing holes evenly distributed on the 4 corners of the upper flange. The third fixing holes are through holes with a diameter of d 1431 =d 122 The upper flange is connected to the lower surface of the upper end cover by bolts passing through the third fixing hole. The upper flange is welded to the upper end surface side wall of the center tube, and the upper end surface of the upper flange is flush with the upper end surface of the center tube; the lower flange is welded to the lower end surface side wall of the center tube, and the lower end surface of the lower flange is flush with the lower end surface of the center tube. The lower flange is connected to the upper end surface of the lower end cover by bolts passing through the fourth fixing hole.

[0012] The fixed base is composed of a sleeve and a flange. The sleeve is a hollow square with an inner side length of s 151 =s 123 , the length is l 151 , 50mm≤l 151 ≤80mm, wall thickness is h 151 , 2mm≤h 151 ≤3mm. There is a fifth fixing hole on each of the four sides of the sleeve. The fifth fixing hole is a through hole with a diameter of d 1511 , 8mm≤d 1511 ≤12mm. The sleeve is placed on the outside of the fixed target frame and connected to the fixed target frame by bolts passing through the fifth fixing hole. The flange is a square ring with an inner side length of s 1521 =s 141 +2h 141, the outer length is s 1522 , 60mm≤s 1522 ≤80mm, thickness h 152 , 2mm≤h 152 ≤3mm. The flange is welded to the outer wall of the upper end of the sleeve, and the upper end surface of the flange is flush with the upper end surface of the sleeve. There are 4 sixth fixing holes evenly distributed on the 4 corners of the flange. The sixth fixing hole is a through hole with a diameter of d 1521 =d 122 The flange is connected to the lower end surface of the lower end cover by bolts passing through the sixth fixing hole.

[0013] The front elastic membrane is in the shape of a square plate with a length of l 21 = l 11 +2s 111 , width w 21 =h 11 +2s 111 , thickness is h 21 , 2mm≤h 21 ≤6mm. The front elastic diaphragm has seven fixing holes evenly distributed on the four sides. The seventh fixing hole is a through hole with a diameter of d 211 =d 112 The front elastic diaphragm is connected to the first threaded mounting hole on the front side of the mounting frame by bolts passing through the seventh fixing hole. The front elastic diaphragm is required to undergo only elastic deformation under the action of a certain intensity of shock wave. Rubber, silicone, nylon and other materials can be selected. The density ρ2 is required to meet 1.0g / cm 3 ≤ρ2≤5.0g / cm 3 , elastic modulus E2 satisfies 0.5MPa≤E2≤80MPa, yield strength σ2 satisfies 4.0MPa≤σ2≤100MPa, and elongation at break λ2 satisfies λ2≥100%. The overall structure and material of the rear elastic diaphragm, the left elastic diaphragm and the right elastic diaphragm are consistent with those of the front elastic diaphragm, with only differences in size and thickness. The length l of the rear elastic diaphragm is 22 = l 11 +2s 111 , width w 22 =h 11 +2s 111 , thickness is h 22 , 3mm≤h 22 ≤10mm; length of the left elastic diaphragm l 23 =w 11 +2s 111 , width w 21 =h 11 +2s 111 , thickness is h 23 , 2mm≤h 23 ≤8mm; length of the right elastic diaphragm l 24=w 11 +2s 111 , width w 21 =h 11 +2s 111 , thickness is h 24 =h 23 .

[0014] The test module consists of 4 displacement sensors, 5 indicator lights, and a controller. The 4 displacement sensors are respectively installed in the 4 second threaded mounting holes of the mounting platform through the outer wall threads. The 4 displacement sensors obtain the center displacement data of the front elastic diaphragm, the rear elastic diaphragm, the left elastic diaphragm, and the right elastic diaphragm respectively; the 4 displacement sensors are connected to the controller through cables. The 4 displacement sensors measure the center displacement data of the front elastic diaphragm, the rear elastic diaphragm, the left elastic diaphragm, and the right elastic diaphragm respectively, and transmit the center displacement data of the front elastic diaphragm, the rear elastic diaphragm, the left elastic diaphragm, and the right elastic diaphragm to the controller respectively. The displacement sensor must meet the range of not less than 50mm and the sampling frequency of not less than 5000Hz. The indicator lights use colored LED lights, and the colors of the 5 indicator lights are green, blue, yellow, red, and purple respectively. The indicator lights are required to have a life of not less than 15,000 hours and a luminous brightness of not less than 100mcd (i.e. 100 millicandela). The controller uses a field programmable gate array (FPGA) with integrated measurement and analysis software to process the center displacement data of the front elastic diaphragm, rear elastic diaphragm, left elastic diaphragm, and right elastic diaphragm collected by four displacement sensors and control the on and off of the indicator light. The controller is required to have an operating frequency of no less than 100MHz.

[0015] After receiving the central displacement data of the equivalent chest wall collected by the displacement sensor, the controller first differentiates the displacement data (v i (t) = dx i (t) / dt, i=1,2,3,4) and find the maximum value (v i =max{v i(t)}, where \(i = 1, 2, 3, 4\)) to obtain the peak motion velocities \(v_1\), \(v_2\), \(v_3\), and \(v_4\) at the centers of the front elastic diaphragm, rear elastic diaphragm, left elastic diaphragm, and right elastic diaphragm; then compare \(v_1\), \(v_2\), \(v_3\), and \(v_4\) to obtain the maximum chest wall motion velocity \(v=\max\{v_1, v_2, v_3, v_4\}\); then according to the "correspondence table between injury degree and maximum chest wall motion velocity" (refer to the paper "Chest wall velocity as a predictor of nonauditory blast injury in a complex wave environment" by Axelsson H and Yelverton J T. published in the journal "The Journal of trauma", Chinese name is "Research on chest wall velocity as a predictor of blast injury in a complex waveform environment"), determine the interval where the maximum chest wall motion velocity \(v\) is located to obtain the injury degree of the human chest cavity. If \(0\leq v\leq3.6\mathrm{m / s}\), there is no injury; if \(3.6\mathrm{m / s}<v\leq4.3\mathrm{m / s}\), it is a minor injury; if \(4.3\mathrm{m / s}<v\leq7.5\mathrm{m / s}\), it is a moderate injury; if \(7.5\mathrm{m / s}<v\leq9.8\mathrm{m / s}\), it is a medium injury; if \(v > 9.8\mathrm{m / s}\), it is a severe injury; finally, according to the injury degree, send a control signal to the indicator light to control the corresponding color indicator light to turn on. If there is no injury, control the green LED light to turn on; if it is a minor injury, control the blue LED light to turn on; if it is a moderate injury, control the yellow LED light to turn on; if it is a medium injury, control the red LED light to turn on; if it is a severe injury, control the purple LED light to turn on.

[0016] The fixed target frame is composed of a fixed rod and a base. The fixed target frame is made of metal, and the required density \(\rho_4\) satisfies \(\rho_4\geq2.0\mathrm{g / cm}\) 3 , the yield strength \(\sigma_4\) satisfies \(\sigma_4\geq200\mathrm{MPa}\), and no plastic deformation occurs under the action of the shock wave. The fixed rod is made of a hollow square rod. The outer side length of the fixed rod is \(s\) 41 \(=s\) 123 , the wall thickness is \(h\) 41 , \(2\mathrm{mm}\leq h\) 41 \(\leq3\mathrm{mm}\), and the length is \(l\) 41 , \(1500\mathrm{mm}\leq l\) 41 \(\leq1800\mathrm{mm}\). On the outer surface of the fixed rod in the vertical direction, \(M\) (\(1 < M < 30\)) eighth fixing holes are evenly distributed. The eighth fixing holes are circular through holes, and the diameter \(d\) 411 \(=d\) 1511 , and the distance between adjacent eighth fixing holes is \(l\) 411 , \(20\mathrm{mm}\leq l\) 411 \(\leq100\mathrm{mm}\). The base is in a disc shape, with a diameter of \(d\) 42 , \(300\mathrm{mm}\leq d\) 42 \(\leq400\mathrm{mm}\), and the thickness is \(h\)42 , 5mm≤h 42 ≤15mm. There is a circle of ninth fixing holes evenly distributed on the edge of the base. The ninth fixing holes are circular through holes with a diameter of d 421 , 15mm≤d 421 ≤20mm. The fixed target stand is fixed to the ground by passing a steel chisel through the ninth fixing hole.

[0017] The method for detecting human chest cavity shock wave injury using the human chest cavity shock wave injury detection simulation target of the present invention comprises the following steps:

[0018] The first step is to assemble a simulated target for detecting human chest shock wave injury, the method is:

[0019] 1.1 Install the four displacement sensors in the second threaded mounting holes of the mounting platform through threads, and connect the four displacement sensors to the controller through cables;

[0020] 1.2 Connect the support tube to the upper surface of the lower end cover by passing bolts through the fourth fixing hole;

[0021] 1.3 Connect the fixed base to the lower surface of the lower end cover by passing bolts through the sixth fixing hole;

[0022] 1.4 Install the lower end cover on the bottom of the mounting frame with bolts;

[0023] 1.5 Install the upper end cover on the top of the mounting frame with bolts;

[0024] 1.6 Connect the support tube to the lower end surface of the upper end cover by passing bolts through the third fixing hole;

[0025] 1.7 Fix the front elastic diaphragm, rear elastic diaphragm, left elastic diaphragm and right elastic diaphragm to the front, rear, left and right sides of the mounting frame with bolts;

[0026] 1.8 Pass the fixed target frame through the fixed base and the inside of the support tube, and connect it to the eighth fixing hole on the outer side of the fixed target frame through the fifth fixing hole with a bolt.

[0027] The second step is to set up a simulated target for detecting human chest shock wave damage, the method is:

[0028] 2.1 Determine the layout location of the simulated target for human chest shock wave injury detection, and the ground at the layout location must be flat;

[0029] 2.2 Use a steel chisel to pass through the ninth fixing hole to fix the fixed target stand on the ground.

[0030] The third step is to detect chest shock wave injury using a human chest shock wave injury detection simulation target, the method is:

[0031] 3.1 Initiating explosives;

[0032] 3.2 Under the action of the shock wave, the front elastic diaphragm, rear elastic diaphragm, left elastic diaphragm, and right elastic diaphragm deform. At the same time, four displacement sensors respectively record the displacement data at the center points of the front elastic diaphragm, rear elastic diaphragm, left elastic diaphragm, and right elastic diaphragm, and transmit the four displacement data to the controller through a cable;

[0033] 3.3 The controller processes the displacement data collected by the four displacement sensors respectively and controls the opening and closing of the indicator light. The method is as follows:

[0034] 3.3.1 The controller receives and stores the four displacement data x i (t), i = 1, 2, 3, 4, where t is time;

[0035] 3.3.2 The controller differentiates the four received displacement data, that is, let v i (t) = dx i (t) / dt, i = 1, 2, 3, 4, to obtain v1(t), v2(t), v3(t), and v4(t) which are the moving speeds at the center points of the front elastic diaphragm, rear elastic diaphragm, left elastic diaphragm, and right elastic diaphragm respectively; find the maximum values of v1(t), v2(t), v3(t), and v4(t) respectively, that is, let v i = max{v i (t)}, i = 1, 2, 3, 4, to obtain the peak moving speeds at the center points of the front elastic diaphragm, rear elastic diaphragm, left elastic diaphragm, and right elastic diaphragm, that is, the speed v1 of the front elastic diaphragm, the speed v2 of the rear elastic diaphragm, the speed v3 of the left elastic diaphragm, and the speed v4 of the right elastic diaphragm;

[0036] 3.3.3 The controller compares v1, v2, v3, and v4 to obtain the maximum chest wall movement speed v, where v = max{v1, v2, v3, v4};

[0037] 3.3.4 The controller determines the interval where the maximum chest wall movement speed v is located according to the "corresponding table of injury degree and maximum chest wall movement speed", and obtains the injury degree of the human chest cavity. If 0 ≤ v ≤ 3.6 m / s, there is no injury. If 3.6 m / s < v ≤ 4.3 m / s, it is a minor injury. If 4.3 m / s < v ≤ 7.5 m / s, it is a minor injury. If 7.5 m / s < v ≤ 9.8 m / s, it is a moderate injury. If v > 9.8 m / s, it is a severe injury;

[0038] 3.3.5 The controller sends a control signal to the indicator light according to the degree of injury to the human chest cavity, and controls the indicator light of the corresponding color. If there is no injury, the green LED light will be controlled to light up; if there is a slight injury, the blue and green LED lights will be controlled to light up; if there is a slight injury, the yellow LED light will be controlled to light up; if there is a moderate injury, the red LED light will be controlled to light up; if there is a severe injury, the purple LED light will be controlled to light up.

[0039] The fourth step is to obtain the degree of human chest injury and reset the simulated target for detecting human chest shock wave injury, the method is:

[0040] 4.1 After the explosion, the user can obtain the degree of shock wave damage to the human chest at that location based on the color of the indicator light and the "correspondence table of indicator light color and chest damage degree". That is, the green LED light represents no damage, the blue LED light represents slight damage, the yellow LED light represents slight damage, the red LED light represents moderate damage, and the purple LED light represents severe damage.

[0041] 4.2 The controller can be reset by powering off and restarting, thereby realizing the rapid reuse of the simulated target for detecting human chest shock wave injury of the present invention.

[0042] The following technical effects can be achieved by using the present invention:

[0043] 1. The present invention simulates the human chest cavity based on an elastic diaphragm, measures the peak movement speed of the elastic diaphragm, and characterizes its speed range with the help of LED lights of different colors. Combined with the "indicator light color and chest cavity injury degree correspondence table", the injury degree of the human chest cavity at the test position can be quickly and intuitively obtained.

[0044] 2. The present invention utilizes multiple elastic diaphragms to achieve multi-directional detection of human chest cavity injuries, and can more objectively reflect the damage caused by shock waves to the human chest cavity.

[0045] 3. The human chest shock wave injury detection simulation target of the present invention has the characteristics of low testing cost, simple and efficient testing process, strong environmental adaptability, intuitive test results, and reusability. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 The overall structure diagram of the target;

[0047] Figure 2 This is the overall structure diagram of the target without the front elastic membrane installed;

[0048] Figure 3 Install the frame structure diagram for the target;

[0049] Figure 4 This is the structural diagram of the upper end cover of the target;

[0050] Figure 5This is the structural diagram of the target support tube;

[0051] Figure 6 This is the structural diagram of the target fixing base;

[0052] Figure 7 is the target elastic diaphragm structure diagram;

[0053] Figure 8 This is the logical structure diagram of the target test module;

[0054] Fig. 9 The structural diagram of the target frame for fixing the target;

[0055] Fig.10 is the overall structural diagram of the damage detection method of the present invention;

[0056] Fig.11 This is a flow chart of step 3.3 of the damage detection method of the present invention.

[0057] Description of reference numerals:

[0058] 1. Encapsulation shell, 2. Equivalent chest wall, 3. Test module, 4. Fixed target frame, 11. Mounting frame, 12. Upper end cover, 13. Lower end cover, 14. Support tube, 15. Fixed base, 111. Mounting frame rectangular rod, 112. First threaded mounting hole on the mounting frame, 121. First fixing hole on the edge of the upper end cover, 122. Second fixing hole in the center of the upper end cover, 123. Square hole on the upper end cover, 141. Center tube, 142. Mounting platform, 143. Upper flange of the support tube, 144. Lower flange of the support tube, 1421. Installation The second threaded mounting hole of the mounting platform, 1431. The third fixing hole of the upper flange of the support tube, 1441. The fourth fixing hole of the lower flange of the support tube, 151. The sleeve, 152. The fixed base flange, 1511. The fifth fixing hole of the sleeve, 1521. The sixth fixing hole of the fixed base flange, 21. The front equivalent chest wall, 211. The seventh fixing hole of the front equivalent chest wall, 31. The displacement sensor, 32. The indicator light, 33. The controller, 41. The fixing rod, 42. The base, 411. The eighth fixing hole of the fixing rod, 421. The ninth fixing hole of the base DETAILED DESCRIPTION

[0059] In order to facilitate those skilled in the art to understand and implement the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0060] Figure 1 It is a schematic diagram of the overall structure of the present invention. Figure 1 As shown, combined Figure 2The human chest shock wave injury detection simulation target of the present invention is composed of a packaging shell 1, an equivalent chest wall 2, a test module 3 and a fixed target frame 4. The packaging shell 1 is a rectangular box with an upper and lower surface but no side, and is composed of a mounting frame 11, an upper end cover 12, a lower end cover 13, a support tube 14 and a fixed base 15. The packaging shell 1 is made of metal or organic glass, and the density ρ1 is required to meet ρ1≥2.0g / cm 3 , the yield strength σ1 satisfies σ1 ≥ 200MPa, and no plastic deformation occurs under the action of the shock wave. The equivalent chest wall 2 is in the shape of a square flat plate, and is composed of a front elastic diaphragm 21, a rear elastic diaphragm 22, a left elastic diaphragm 23, and a right elastic diaphragm 24, which are respectively installed on the four sides of the packaging shell 1 to simulate the front chest wall, rear chest wall, left chest wall and right chest wall of the human body. The test module 3 is installed inside the packaging shell 1 to detect the movement of the equivalent chest wall 2. The fixed target frame 4 is installed at the bottom of the packaging shell 1 to fix the target.

[0061] Figure 3 11 is a structural diagram of the installation frame. Figure 3 As shown, the mounting frame 11 is a square frame assembled and welded from 12 rectangular parallelepiped rods 111. The rectangular parallelepiped rods 111 are solid, with a square cross section and a side length of s. 111 , 40mm≤s 111 ≤60mm. The length, width and height of the area enclosed by the side of the mounting frame 11 are l 11 、w 11 、h 11 According to GB / T10000-2023 "Chinese Adult Body Size Standard", the 50th percentile adult male chest size is used as the benchmark to determine 236mm≤l 11 ≤382mm, 172mm≤w 11 ≤270mm, 180mm≤h 11 ≤250mm. The outer surfaces of the 12 cuboid rods 111 of the mounting frame 11 are evenly distributed with N (5≤N≤10) first threaded mounting holes 112, and the diameter of the first threaded mounting holes 112 is d 112 , 8mm≤d 112 ≤12mm, depth h 112 , 8mm≤h 112 ≤15mm, used to install the equivalent chest wall 2, the upper end cover 12 and the lower end cover 13.

[0062] Figure 4 12 is a structural diagram of the upper end cover. Figure 4 As shown, the upper end cover 12 is in the shape of a square plate with a length of l 12 = l 11 +2s 111 , width w 12 =w11 +2s 111 , thickness is h 12 , 3mm≤h 12 ≤6mm. The upper end cover 12 has first fixing holes 121 evenly distributed on the four sides. The first fixing holes 121 are through holes with a diameter d 121 =d 112 The upper end cover 12 is connected and fixed to the upper end surface of the mounting frame 11 by bolts passing through the first fixing hole 121. A square hole 123 is opened in the center of the upper end cover 12, and the side length of the square hole 123 is s. 123 , 40mm≤s 123 ≤60mm, which can be used for the fixed target frame 4 to pass through. Four second fixing holes 122 are evenly distributed on the four corners of the square hole 123. The second fixing holes 122 are through holes with a diameter of d 122 , 8mm≤d 122 ≤12mm, the upper end cover 12 is connected to the support tube 14 by bolts passing through the second fixing holes 122. The lower end cover 13 has the same structure as the upper end cover 12.

[0063] Figure 5 FIG. 1 is a structural diagram of the support tube 14. Figure 5 As shown, the support tube 14 is in the shape of a square tube with openings at the top and bottom, and is composed of a center tube 141, a mounting platform 142, an upper flange 143, and a lower flange 144. The center tube 141 is a square tube with openings at the top and bottom, and the inner side length of the center tube 141 is s 141 =s 123 , length l 141 =h 11 +2s 111 , wall thickness is h 141 , 2mm≤h 141 ≤3mm, the inner space of the central tube 141 is for the fixed target frame 4 to pass through. The mounting platform 142 is in the shape of a square ring and is welded to the center position of the outer side of the central tube 141. The inner side length of the mounting platform 142 is s 1421 =s 141 +2h 141 , the outer length is s 1422 , 60mm≤s 1422 ≤80mm, height h 142 , 40mm≤h 142 ≤50mm. There is a second threaded mounting hole 1421 at the center of each of the four sides of the mounting platform 142. The diameter of the second threaded mounting hole 1421 is d 1421 , 5mm≤d 1421 ≤10mm, depth h 1421 , 5mm≤h 1421≤10mm, and the displacement sensors 31 are installed in the four second threaded mounting holes 1421. The upper flange 143 and the lower flange 144 are both square rings, and the upper flange 143 and the lower flange 144 have the same structure. The inner side length s of the upper flange 143 1431 =s 141 +2h 141 , the outer length is s 1432 , 60mm≤s 1432 ≤80mm, thickness h 143 , 2mm≤h 143 ≤3mm. Four third fixing holes 1431 are evenly distributed on the four corners of the upper flange 143. The third fixing holes 1431 are through holes with a diameter d 1431 =d 122 The upper flange 143 is connected to the lower surface of the upper end cover 12 by passing bolts through the third fixing holes 1431. The upper flange 143 is welded to the upper end surface side wall of the center tube 141, and the upper end surface of the upper flange 143 is flush with the upper end surface of the center tube 141; the lower flange 144 is welded to the lower end surface side wall of the center tube 141, and the lower end surface of the lower flange 144 is flush with the lower end surface of the center tube 141. The lower flange 144 is connected to the upper end surface of the lower end cover 13 by passing bolts through the fourth fixing holes 1441.

[0064] Figure 6 It is a structural diagram of the fixed base 15. Figure 6 As shown, the fixed base 15 is composed of a sleeve 151 and a flange 152. The sleeve 151 is a hollow square with an inner side length s 151 =s 123 , the length is l 151 , 50mm≤l 151 ≤80mm, wall thickness is h 151 , 2mm≤h 151 ≤3mm. Each of the four sides of the sleeve 151 is provided with a fifth fixing hole 1511, which is a through hole with a diameter of d 1511 , 8mm≤d 1511 ≤12mm. The sleeve 151 is sleeved on the outside of the fixed target frame 4 and connected to the fixed target frame 4 by bolts passing through the fifth fixing hole 1511. The flange 152 is a square ring with an inner side length s 1521 =s 141 +2h 141 , the outer length is s 1522 , 60mm≤s 1522 ≤80mm, thickness h 152 , 2mm≤h 152≤3mm. The flange 152 is welded to the outer wall of the upper end of the sleeve 151, and the upper end surface of the flange 152 is flush with the upper end surface of the sleeve 151. There are four sixth fixing holes 1521 evenly distributed on the four corners of the flange 152. The sixth fixing holes 1521 are through holes with a diameter d 1521 =d 122 The flange 152 is connected to the lower end surface of the lower end cover 13 by bolts passing through the sixth fixing holes 1521.

[0065] Figure 7 FIG. 2 is a structural diagram of the front elastic membrane 21. Figure 7 As shown, the front elastic membrane 21 is in the shape of a square plate with a length of l 21 = l 11 +2s 111 , width w 21 =h 11 +2s 111 , thickness is h 21 , 2mm≤h 21 ≤6mm. The front elastic membrane 21 has seven fixing holes 211 evenly distributed on the four sides. The seventh fixing holes 211 are through holes with a diameter d 211 =d 112 The front elastic diaphragm 21 is connected to the first threaded mounting hole 112 on the front side of the mounting frame 11 by means of bolts passing through the seventh fixing hole 211. The front elastic diaphragm 21 is required to undergo only elastic deformation under the action of a shock wave of a certain intensity, and can be made of materials such as rubber, silicone, and nylon, and the density ρ2 is required to meet 1.0 g / cm 3 ≤ρ2≤5.0g / cm 3 , elastic modulus E2 satisfies 0.5MPa≤E2≤80MPa, yield strength σ2 satisfies 4.0MPa≤σ2≤100MPa, and elongation at break λ2 satisfies λ2≥100%. The overall structure and material of the rear elastic diaphragm 22, the left elastic diaphragm 23 and the right elastic diaphragm 24 are consistent with those of the front elastic diaphragm 21, and only the size and thickness are different. The length l of the rear elastic diaphragm 22 is 22 = l 11 +2s 111 , width w 22 =h 11 +2s 111 , thickness is h 22 , 3mm≤h 22 ≤10mm; length l of the left elastic diaphragm 23 23 =w 11 +2s 111 , width w 21 =h 11 +2s 111 , thickness is h 23 , 2mm≤h 23≤8mm; length l of the right elastic diaphragm 24 24 =w 11 +2s 111 , width w 21 =h 11 +2s 111 , thickness is h 24 =h 23 .

[0066] Figure 8 This is the logical structure diagram of test module 3. Figure 8 As shown, the test module 3 is composed of 4 displacement sensors 31, 5 indicator lights 32, and a controller 33. The 4 displacement sensors 31 are respectively installed in the 4 second threaded mounting holes 1421 of the mounting platform 142 through the outer wall threads, and the 4 displacement sensors 31 respectively obtain the center displacement data of the front elastic diaphragm 21, the rear elastic diaphragm 22, the left elastic diaphragm 23, and the right elastic diaphragm 24; the 4 displacement sensors 31 are connected to the controller 33 through cables. The 4 displacement sensors 31 respectively measure the center displacement data of the front elastic diaphragm 21, the rear elastic diaphragm 22, the left elastic diaphragm 23, and the right elastic diaphragm 24, and transmit the center displacement data of the front elastic diaphragm 21, the rear elastic diaphragm 22, the left elastic diaphragm 23, and the right elastic diaphragm 24 to the controller 33. The displacement sensor 31 needs to meet the range of not less than 50mm and the sampling frequency of not less than 5000Hz. The indicator lights 32 use colored LED lights, and the colors of the 5 indicator lights 32 are green, blue, yellow, red, and purple respectively. The indicator light 32 is required to have a life of not less than 15,000 hours and a luminous brightness of not less than 100 millicandelas. The controller 33 uses a field programmable gate array (FPGA) with integrated measurement and analysis software to process the center displacement data of the front elastic diaphragm 21, the rear elastic diaphragm 22, the left elastic diaphragm 23, and the right elastic diaphragm 24 collected by the four displacement sensors 31 and to control the opening and closing of the indicator light 32. The controller 33 is required to have an operating frequency of not less than 100 MHz.

[0067] The flow chart of the measurement and analysis software integrated in the controller 33 is as follows: Fig.11 As shown, after the controller 33 receives the central displacement data of the equivalent chest wall 2 collected by the displacement sensor 31, it first differentiates the displacement data (v i (t) = dx i (t) / dt, i=1,2,3,4) and find the maximum value (v i =max{v i(t)}, where \(i = 1, 2, 3, 4\)) to obtain the peak motion velocities \(v_1\), \(v_2\), \(v_3\), \(v_4\) at the centers of the front elastic diaphragm 21, rear elastic diaphragm 22, left elastic diaphragm 23, and right elastic diaphragm 24; then compare \(v_1\), \(v_2\), \(v_3\), \(v_4\) to obtain the maximum chest wall motion velocity \(v=\max\{v_1, v_2, v_3, v_4\}\); then, according to Table 1, "Corresponding Table of Injury Degree and Maximum Chest Wall Motion Velocity" (refer to the paper "Chest wall velocity as a predictor of nonauditory blast injury in a complex wave environment" by Axelsson H and Yelverton J T. published in the journal "The Journal of trauma", Chinese name is "Research on Chest Wall Velocity as a Predictive Index for Blast Injury in a Complex Wave Environment"), determine the interval in which the maximum chest wall motion velocity \(v\) lies to obtain the injury degree of the human chest cavity. If \(0\leq v\leq3.6m / s\), there is no injury; if \(3.6m / s < v\leq4.3m / s\), it is a minor injury; if \(4.3m / s < v\leq7.5m / s\), it is a moderate injury; if \(7.5m / s < v\leq9.8m / s\), it is a moderately severe injury; if \(v > 9.8m / s\), it is a severe injury; finally, according to the injury degree, send a control signal to the indicator light 32 to control the corresponding color indicator light 32 to turn on. If there is no injury, control the green LED light to turn on; if it is a minor injury, control the blue LED light to turn on; if it is a moderate injury, control the yellow LED light to turn on; if it is a moderately severe injury, control the red LED light to turn on; if it is a severe injury, control the purple LED light to turn on.

[0068] Table 1 Corresponding Table of Injury Degree and Maximum Chest Wall Motion Velocity

[0069] Damage level Maximum chest wall movement speed v (m / s) No damage 0≤v≤3.6 Minor to light injuries 3.6<v≤4.3 Minor to moderate injuries 4.3<v≤7.5 Moderate to severe injuries 7.5<v≤9.8 50% fatality rate v>9.8

[0070] Fig. 9 It is the structural diagram of the fixed target frame 4. As Fig. 9 shown, the fixed target frame 4 is composed of a fixed rod 41 and a base 42. The fixed target frame 4 is made of metal, and it is required that the density \(\rho_4\) satisfies \(\rho_4\geq2.0g / cm\) 3 , and the yield strength \(\sigma_4\) satisfies \(\sigma_4\geq200MPa\), and no plastic deformation occurs under the action of the shock wave. The fixed rod 41 is made of a hollow square rod. The outer side length \(s\) of the fixed rod 41 41 =\(s\) 123 , the wall thickness is \(h\) 41 , \(2mm\leq h\) 41 \(\leq3mm\), and the length is \(l\) 41 , \(1500mm\leq l\) 41≤1800 mm. There are M (1 < M < 30) eighth fixing holes 411 evenly distributed on the outer surface of the fixing rod 41 in the vertical direction. The eighth fixing holes 411 are circular through holes with a diameter of d 411 = d 1511 , and the distance between two adjacent eighth fixing holes 411 is l 411 , 20 mm ≤ l 411 ≤ 100 mm. The base 42 is disc-shaped with a diameter of d 42 , 300 mm ≤ d 42 ≤ 400 mm and a thickness of h 42 , 5 mm ≤ h 42 ≤ 15 mm. There is a circle of ninth fixing holes 421 evenly distributed at the edge of the base 42. The ninth fixing holes 421 are circular through holes with a diameter of d 421 , 15 mm ≤ d 421 ≤ 20 mm. The fixed target frame 4 is fixed to the ground by steel pins passing through the ninth fixing holes 421.

[0071] The method for detecting human thoracic shock wave injury using the human thoracic shock wave injury detection simulation target of the present invention is as Fig.10 shown and includes the following steps:

[0072] The first step is to assemble the human thoracic shock wave injury detection simulation target, and the method is as follows:

[0073] 1.1 Install 4 displacement sensors 31 on the second threaded mounting holes 1421 of the mounting platform 142 through threads respectively, and connect the 4 displacement sensors 31 to the controller 33 through cables;

[0074] 1.2 Connect the support cylinder 14 to the upper surface of the lower end cover 13 through bolts passing through the fourth fixing holes 1441;

[0075] 1.3 Connect the fixed base 15 to the lower surface of the lower end cover 13 through bolts passing through the sixth fixing holes 1521;

[0076] 1.4 Install the lower end cover 13 at the bottom of the mounting frame 11 through bolts;

[0077] 1.5 Install the upper end cover 12 at the top of the mounting frame 11 through bolts;

[0078] 1.6 Connect the support cylinder 14 to the lower end face of the upper end cover through bolts passing through the third fixing holes 1431;

[0079] 1.7 Fix the front elastic diaphragm 21, rear elastic diaphragm 22, left elastic diaphragm 23, and right elastic diaphragm 24 to the front, rear, left, and right four sides of the mounting frame 11 through bolts;

[0080] 1.8 The fixed target frame 4 is passed through the fixed base 15 and the support tube 14 , and is connected to the eighth fixing hole 411 on the outer side of the fixed target frame 4 by means of bolts passing through the fifth fixing hole 1511 .

[0081] The second step is to set up a simulated target for detecting human chest shock wave damage, the method is:

[0082] 2.1 Determine the layout location of the simulated target for human chest shock wave injury detection, and the ground at the layout location must be flat;

[0083] 2.2 Use a steel chisel to pass through the ninth fixing hole 421 to fix the fixed target frame 4 on the ground.

[0084] The third step is to detect chest shock wave injury using a human chest shock wave injury detection simulation target, the method is:

[0085] 3.1 Detonating explosives;

[0086] 3.2 Under the action of the shock wave, the front elastic diaphragm 21, the rear elastic diaphragm 22, the left elastic diaphragm 23, and the right elastic diaphragm 24 are deformed, and at the same time, the four displacement sensors 31 respectively record the displacement data at the center points of the front elastic diaphragm 21, the rear elastic diaphragm 22, the left elastic diaphragm 23, and the right elastic diaphragm 24, and transmit the four displacement data to the controller 33 through the cable;

[0087] 3.3 The controller 33 processes the displacement data collected by the four displacement sensors 31 and controls the indicator lights to turn on and off. Fig.11 As shown:

[0088] 3.3.1 The controller 33 receives and stores 4 displacement data x i (t), i = 1, 2, 3, 4, t is time;

[0089] 3.3.2 The controller 33 differentiates the received 4 displacement data, that is, v i (t) = dx i (t) / dt, i = 1, 2, 3, 4, and v1(t), v2(t), v3(t), and v4(t) are the movement speeds at the center points of the front elastic diaphragm 21, the rear elastic diaphragm 22, the left elastic diaphragm 23, and the right elastic diaphragm 24 respectively; the maximum values ​​of v1(t), v2(t), v3(t), and v4(t) are calculated respectively, that is, let v i =max{v i(t)}, where \(i = 1, 2, 3, 4\), to obtain the peak motion speeds at the center points of the front elastic diaphragm 21, the rear elastic diaphragm 22, the left elastic diaphragm 23, and the right elastic diaphragm 24, namely the front elastic diaphragm speed \(v_1\), the rear elastic diaphragm speed \(v_2\), the left elastic diaphragm speed \(v_3\), and the right elastic diaphragm speed \(v_4\);

[0090] 3.3.3 The controller 33 compares \(v_1\), \(v_2\), \(v_3\), and \(v_4\) to obtain the maximum chest wall motion speed \(v\), where \(v=\max\{v_1, v_2, v_3, v_4\}\);

[0091] 3.3.4 The controller 33 determines the interval in which the maximum chest wall motion speed \(v\) lies according to Table 1 "Corresponding Table of Injury Degree and Maximum Chest Wall Motion Speed" to obtain the injury degree of the human chest cavity. If \(0\leq v\leq3.6\ m / s\), there is no injury; if \(3.6\ m / s < v\leq4.3\ m / s\), it is a minor injury; if \(4.3\ m / s < v\leq7.5\ m / s\), it is a moderate injury; if \(7.5\ m / s < v\leq9.8\ m / s\), it is a medium injury; if \(v > 9.8\ m / s\), it is a severe injury;

[0092] 3.3.5 The controller 33 sends a control signal to the indicator light 32 according to the injury degree of the human chest cavity to control the corresponding color indicator light 32 to turn on. The method is as follows: If there is no injury, control the green LED light to turn on; if it is a minor injury, control the blue - green LED light to turn on; if it is a moderate injury, control the yellow LED light to turn on; if it is a medium injury, control the red LED light to turn on; if it is a severe injury, control the purple LED light to turn on.

[0093] The fourth step is to obtain the injury degree of the human chest cavity and reset the human chest cavity shock wave injury detection simulation target. The method is as follows:

[0094] 4.1 After the explosion, the user, based on the color of the lit indicator light 32 and in combination with Table 2 "Corresponding Table of Indicator Light Color and Chest Cavity Injury Degree", obtains the shock wave injury degree of the human chest cavity at this position. That is, when the green LED light is on, it represents no injury; when the blue LED light is on, it represents a minor injury; when the yellow LED light is on, it represents a moderate injury; when the red LED light is on, it represents a medium injury; when the purple LED light is on, it represents a severe injury.

[0095] Table 2 Corresponding Table of Indicator Light Color and Chest Cavity Injury Degree

[0096] Indicator Color Degree of chest injury green No damage blue Minor Injury yellow Minor injuries red Moderate injury Purple Severe injury

[0097] 4.2 Cut off the power supply of the controller 32 and restart it to complete the reset, realizing the rapid reuse of the human chest cavity shock wave injury detection simulation target of the present invention.

Claims

1. A human chest shock wave injury detection simulation target, characterized in that The human chest shock wave injury detection simulation target comprises a packaging shell (1), an equivalent chest wall (2), a test module (3) and a fixed target frame (4); the packaging shell (1) is a rectangular parallelepiped box with an upper and lower surface and no side surfaces, and is composed of a mounting frame (11), an upper end cover (12), a lower end cover (13), a support tube (14) and a fixed base (15), and the packaging shell (1) is made of metal or organic glass; the equivalent chest wall (2) is in the shape of a square plate, and is composed of a front elastic diaphragm (21), a rear elastic diaphragm (22), a left elastic diaphragm (23) and a right elastic diaphragm (24), which are respectively installed on four sides of the packaging shell (1) to simulate the front chest wall, rear chest wall, left chest wall and right chest wall of the human body; the test module (3) is installed inside the packaging shell (1) to detect the movement of the equivalent chest wall (2); the fixed target frame (4) is installed at the bottom of the packaging shell (1) to fix the target; The installation frame (11) is a square frame assembled and welded from 12 rectangular parallelepiped rods (111); the rectangular parallelepiped rods (111) are solid, have a square cross section, and a side length of s 111 The length, width and height of the area surrounded by the side of the mounting frame (11) are l 11 、w 11 、h 11 According to GB / T10000-2023 "Chinese Adult Human Body Size Standard", the 50th percentile adult male chest size is used as a reference; the outer surface of the 12 rectangular parallelepiped rods (111) of the mounting frame (11) is evenly distributed with N first threaded mounting holes (112), N is a positive integer; the diameter of the first threaded mounting hole (112) is d 112 , used to install the equivalent chest wall (2), the upper end cover (12) and the lower end cover (13); The upper end cover (12) is in the shape of a square plate with a length of l 12 = l 11 +2s 111 , width w 12 =w 11 +2s 111 The upper end cover (12) has first fixing holes (121) evenly distributed on the four sides. The first fixing hole (121) is a through hole with a diameter d 121 =d 112 The upper end cover (12) is connected and fixed to the upper end surface of the mounting frame (11) by means of bolts passing through the first fixing hole (121); a square hole (123) is opened in the center of the upper end cover (12), and the side length of the square hole (123) is s 123 , for the fixed target frame (4) to pass through; four second fixing holes (122) are evenly distributed on the four corners of the square hole (123), and the second fixing hole (122) is a through hole with a diameter of d 122 The upper end cover (12) is connected to the support tube (14) by means of bolts passing through the second fixing holes (122); the lower end cover (13) and the upper end cover (12) have the same structure; The support tube (14) is in the shape of a square tube with openings at the top and bottom, and is composed of a center tube (141), a mounting platform (142), an upper flange (143), and a lower flange (144); the center tube (141) is a square tube with openings at the top and bottom, and the inner side length of the center tube (141) is s 141 =s 123 , wall thickness is h 141 The inner space of the center tube (141) is for the fixed target frame (4) to pass through; the mounting platform (142) is in the shape of a square ring and is welded to the center position of the outer side of the center tube (141); the center positions of the four sides of the mounting platform (142) each have a second threaded mounting hole (1421), and the four second threaded mounting holes (1421) are each installed with a displacement sensor (31); the upper flange (143) and the lower flange (144) are both square rings, and the upper flange (143) and the lower flange (144) have the same structure; the four corners of the upper flange (143) are evenly distributed with four third fixing holes (1431) The third fixing hole (1431) is a through hole, and the upper flange (143) is connected to the lower surface of the upper end cover (12) by passing bolts through the third fixing hole (1431); the upper flange (143) is welded to the side wall of the upper end surface of the center tube (141), and the upper end surface of the upper flange (143) is flush with the upper end surface of the center tube (141); the lower flange (144) is welded to the side wall of the lower end surface of the center tube (141), and the lower end surface of the lower flange (144) is flush with the lower end surface of the center tube (141); the lower flange (144) is connected to the upper end surface of the lower end cover (13) by passing bolts through the fourth fixing hole (1441); The fixed base (15) is composed of a sleeve (151) and a flange (152); the sleeve (151) is a hollow square with an inner side length s 151 =s 123 The four sides of the sleeve (151) are each provided with a fifth fixing hole (1511), the fifth fixing hole (1511) being a through hole with a diameter of d 1511 ; The sleeve (151) is sleeved on the outer side of the fixed target frame (4) and connected to the fixed target frame (4) by passing bolts through the fifth fixing hole (1511); the flange (152) is a square ring, welded to the outer side wall of the upper end of the sleeve (151), and the upper end surface of the flange (152) is flush with the upper end surface of the sleeve (151); four sixth fixing holes (1521) are evenly distributed on the four corners of the flange (152), and the sixth fixing holes (1521) are through holes. The flange (152) is connected to the lower end surface of the lower end cover (13) by passing bolts through the sixth fixing holes (1521); The front elastic membrane (21) is in the shape of a square plate with a length of l 21 = l 11 +2s 111 , width w 21 =h 11 +2s 111 The front elastic diaphragm (21) has seven fixing holes (211) evenly distributed on four sides, the seventh fixing holes (211) are through holes, and the front elastic diaphragm (21) is connected to the first threaded mounting hole (112) on the front side of the mounting frame (11) by bolts passing through the seventh fixing holes (211); the front elastic diaphragm (21) is made of any one of rubber, silicone and nylon; the overall structure and material of the rear elastic diaphragm (22), the left elastic diaphragm (23) and the right elastic diaphragm (24) are consistent with those of the front elastic diaphragm (21), and the length of the rear elastic diaphragm (22) is l 22 = l 11 +2s 111 , width w 22 =h 11 +2s 111 ; The length l of the left elastic diaphragm (23) 23 =w 11 +2s 111 , width w 21 =h 11 +2s 111 ; The length l of the right elastic diaphragm (24) 24 =w 11 +2s 111 , width w 21 =h 11 +2s 111 ; The test module (3) is composed of four displacement sensors (31), five indicator lights (32), and a controller (33); the four displacement sensors (31) are respectively installed in four second threaded installation holes (1421) of the installation platform (142) through the outer wall threads, and the four displacement sensors (31) respectively obtain the center displacement data of the front elastic diaphragm (21), the rear elastic diaphragm (22), the left elastic diaphragm (23), and the right elastic diaphragm (24); the four displacement sensors (31) are connected to the controller (33) through cables; the four displacement sensors (31) respectively measure the center displacement data of the front elastic diaphragm (21), the rear elastic diaphragm (22), the left elastic diaphragm (23), and the right elastic diaphragm (24). , and the center displacement data of the right elastic diaphragm (24), and transmits the center displacement data of the front elastic diaphragm (21), the rear elastic diaphragm (22), the left elastic diaphragm (23), and the right elastic diaphragm (24) to the controller (33) respectively; the indicator lights (32) use colored LED lights, and the colors of the five indicator lights (32) are green, blue, yellow, red, and purple respectively; the controller (33) is integrated with measurement and analysis software for processing the center displacement data of the front elastic diaphragm (21), the rear elastic diaphragm (22), the left elastic diaphragm (23), and the right elastic diaphragm (24) collected by the four displacement sensors (31) and controlling the opening and closing of the indicator lights (32); After the controller (33) receives the central displacement data of the equivalent chest wall (2) collected by the displacement sensor (31), it first differentiates and finds the maximum value of the displacement data to obtain the peak motion speeds v1, v2, v3, and v4 at the centers of the front elastic diaphragm (21), rear elastic diaphragm (22), left elastic diaphragm (23), and right elastic diaphragm (24); then compares v1, v2, v3, and v4 to obtain the maximum chest wall motion speed v; then, according to the "corresponding table of injury degree and maximum chest wall motion speed", determines the interval where the maximum chest wall motion speed v is located to obtain the injury degree of the human thoracic cavity. If 0 ≤ v ≤ 3.6 m / s, there is no injury; if 3.6 m / s < v ≤ 4.3 m / s, it is a minor injury; if 4.3 m / s < v ≤ 7.5 m / s, it is a moderate injury; if 7.5 m / s < v ≤ 9.8 m / s, it is a moderately severe injury; if v > 9.8 m / s, it is a severe injury; finally, according to the injury degree, sends a control signal to the indicator light (32) to control the corresponding color indicator light (32) to turn on. If there is no injury, it controls the green LED light to turn on; if it is a minor injury, it controls the blue LED light to turn on; if it is a moderate injury, it controls the yellow LED light to turn on; if it is a moderately severe injury, it controls the red LED light to turn on; if it is a severe injury, it controls the purple LED light to turn on; The fixed target stand (4) is composed of a fixed rod (41) and a base (42); the fixed target stand (4) is made of metal; the fixed rod (41) is made of a hollow square rod, and the outer side length of the fixed rod (41) is s 41 =s 123 ; M eighth fixing holes (411) are evenly distributed in the vertical direction of the outer surface of the fixing rod (41), M is a positive integer, and the eighth fixing hole (411) is a circular through hole; the base (42) is disc-shaped, and a circle of ninth fixing holes (421) are evenly distributed at the edge of the base (42), and the ninth fixing hole (421) is a circular through hole. The fixed target frame (4) is fixed to the ground by passing a steel chisel through the ninth fixing hole (421).

2. A human chest shock wave injury detection simulation target as claimed in claim 1, characterized in that The side length s of the cross section of the rectangular parallelepiped rod (111) of the mounting frame (11) is 111 Meet 40mm≤s 111 ≤60mm; length, width and height of the area enclosed by the side of the mounting frame (11) 11 、w 11 、h 11 Meet 236mm≤l 11 ≤382mm, 172mm≤w 11 ≤270mm, 180mm≤h 11 ≤250mm; the number N of the first threaded mounting holes (112) satisfies 5≤N≤10, and the diameter d of the first threaded mounting holes (112) 112 Meet 8mm≤d 112 ≤12mm, depth h 112 Meet 8mm≤h 112 ≤15mm.

3. A human chest shock wave injury detection simulation target as claimed in claim 1, characterized in that The thickness h of the upper end cover (12) is 12 Meet 3mm≤h 12 ≤6mm; the side length s of the square hole (123) in the center of the upper end cover (12) 123 Meet 40mm≤s 123 ≤60mm; the diameter d of the second fixing hole (122) 122 Meet 8mm≤d 122 ≤12mm.

4. A human chest shock wave injury detection simulation target as claimed in claim 1, characterized in that The length l of the central tube (141) 141 =h 11 +2s 111 , wall thickness h 141 Meet 2mm≤h 141 ≤3mm; inner side length s of the installation platform (142) 1421 =s 141 +2h 141 , outer length s 1422 Meet 60mm≤s 1422 ≤80mm, height h 142 Meet 40mm≤h 142 ≤50mm; diameter d of the second threaded mounting hole (1421) 1421 Meet 5mm≤d 1421 ≤10mm, depth h 1421 Meet 5mm≤h 1421 ≤10mm; inner side length s of upper flange (143) 1431 =s 141 +2h 141 , outer length s 1432 Meet 60mm≤s 1432 ≤80mm, thickness h 143 Meet 2mm≤h 143 ≤3mm; diameter d of the third fixing hole (1431) 1431 =d 122 .

5. A human chest shock wave injury detection simulation target as claimed in claim 1, characterized in that The length l of the sleeve (151) 151 Meet 50mm≤l 151 ≤80mm, wall thickness h 151 Meet 2mm≤h 151 ≤3mm; the diameter d of the fifth fixing hole (1511) 1511 Meet 8mm≤d 1511 ≤12mm; inner side length s of flange (152) 1521 =s 141 +2h 141 , outer length s 1522 Meet 60mm≤s 1522 ≤80mm, thickness h 152 Meet 2mm≤h 152 ≤3mm; diameter d of the sixth fixing hole (1521) 1521 =d 122 .

6. A human chest shock wave injury detection simulation target as claimed in claim 1, characterized in that The thickness h of the front elastic membrane (21) is 21 Meet 2mm≤h 21 ≤6mm; diameter d of the seventh fixing hole (211) 211 =d 112 ; The thickness h of the rear elastic membrane (22) 22 Meet 3mm≤h 22 ≤10mm; thickness h of the left elastic diaphragm (23) 23 Meet 2mm≤h 23 ≤8mm; thickness h of the right elastic diaphragm (24) 24 =h 23 .

7. A human chest shock wave injury detection simulation target as claimed in claim 1, characterized in that The displacement sensor (31) has a range of not less than 50 mm and a sampling frequency of not less than 5000 Hz; the indicator light (32) has a service life of not less than 15000 hours and a luminous brightness of not less than 100 mcd, that is, 100 millicandelas; the controller (33) uses a field programmable gate array; the controller (33) has a working frequency of not less than 100 MHz.

8. A human chest shock wave injury detection simulation target as claimed in claim 1, characterized in that The wall thickness h of the fixing rod (41) 41 satisfies 2 mm ≤ h 41 ≤ 3 mm, and the length l 41 satisfies 1500 mm ≤ l 41 ≤ 1800 mm; the number M of the eighth fixing holes (411) satisfies 1 < M < 30, and the diameter d of the eighth fixing holes (411) 411 = d 1511 and the spacing l between two adjacent eighth fixing holes (411) 411 satisfies 20 mm ≤ l 411 ≤ 100 mm; the diameter d of the base (42) 42 satisfies 300 mm ≤ d 42 ≤ 400 mm, and the thickness h 42 satisfies 5 mm ≤ h 42 ≤ 15 mm; the diameter d of the ninth fixing holes (421) 421 satisfies 15 mm ≤ d 421 ≤ 20 mm.

9. A human chest shock wave injury detection simulation target as claimed in claim 1, characterized in that The metal or organic glass used in the packaging shell (1) requires a density ρ1 that satisfies ρ1≥2.0 g / cm 3 , the yield strength σ1 satisfies σ1≥200MPa, and no plastic deformation occurs under the action of the shock wave; the front elastic diaphragm (21) is required to only undergo elastic deformation under the action of a certain intensity of shock wave, and the density ρ2 is required to satisfy 1.0g / cm 3 ≤ρ2≤5.0g / cm 3 The elastic modulus E2 satisfies 0.5MPa≤E2≤80MPa, the yield strength σ2 satisfies 4.0MPa≤σ2≤100MPa, and the elongation at break λ2 satisfies λ2≥100%; the metal used in the fixed target frame (4) requires a density ρ4 that satisfies ρ4≥2.0g / cm 3 , the yield strength σ4 satisfies σ4 ≥ 200MPa, and no plastic deformation occurs under the action of shock waves.

10. A method for detecting human chest shock wave injury using the human chest shock wave injury detection simulation target as claimed in claim 1, characterized in that It includes the following steps: The first step is to assemble the simulation target for detecting human thoracic cavity shock wave injury. The method is as follows: 1.1 Install 4 displacement sensors (31) into the second threaded mounting holes (1421) of the mounting platform (142) respectively through threads, and connect the 4 displacement sensors (31) to the controller (33) through cables; 1.2 Connect the support cylinder (14) to the upper surface of the lower end cover (13) through bolts passing through the fourth fixing holes (1441); 1.3 Connect the fixed base (15) to the lower surface of the lower end cover (13) through bolts passing through the sixth fixing holes (1521); 1.4 Install the lower end cover (13) at the bottom of the mounting frame (11) through bolts; 1.5 Install the upper end cover (12) at the top of the mounting frame (11) through bolts; 1.6 Connect the support cylinder (14) to the lower end face of the upper end cover through bolts passing through the third fixing holes (1431); 1.7 Fix the front elastic diaphragm (21), rear elastic diaphragm (22), left elastic diaphragm (23), and right elastic diaphragm (24) to the front, rear, left, and right four sides of the mounting frame (11) through bolts; 1.8 Pass the fixed target frame (4) through the inside of the fixed base (15) and the support cylinder (14), and connect it to the eighth fixing hole (411) on the outer side of the fixed target frame (4) through bolts passing through the fifth fixing hole (1511); Step 2: Deploy the simulation target for detecting human chest shock wave injury. The method is as follows: 2.1 Determine the deployment location of the simulation target for detecting human chest shock wave injury, and the ground at the deployment location is required to be flat. 2.2 Fix the fixed target frame (4) on the ground by driving a steel rod through the ninth fixing hole (421). Step 3: Detect chest shock wave injury by using the simulation target for detecting human chest shock wave injury. The method is as follows: 3.1 Detonate the explosive. 3.2 Under the action of the shock wave, the front elastic diaphragm (21), the rear elastic diaphragm (22), the left elastic diaphragm (23), and the right elastic diaphragm (24) are deformed. At the same time, four displacement sensors (31) respectively record the displacement data at the center points of the front elastic diaphragm (21), the rear elastic diaphragm (22), the left elastic diaphragm (23), and the right elastic diaphragm (24), and transmit the four displacement data to the controller (33) through cables. 3.3 The controller (33) processes the displacement data collected by the four displacement sensors (31) respectively and controls the opening and closing of the indicator lights. The method is as follows: 3.3.1 The controller (33) receives and stores 4 displacement data x i (t), i = 1, 2, 3, 4, t is time; 3.3.2 The controller (33) differentiates the received 4 displacement data, i.e., v i (t) = dx i (t) / dt, i=1,2,3,4, and v1(t), v2(t), v3(t), and v4(t) are obtained as the movement speeds at the center points of the front elastic diaphragm (21), the rear elastic diaphragm (22), the left elastic diaphragm (23), and the right elastic diaphragm (24), respectively; the maximum values ​​of v1(t), v2(t), v3(t), and v4(t) are obtained respectively, that is, let v i =max{v i (t)}, i = 1, 2, 3, 4, to obtain the peak movement speeds at the center points of the front elastic diaphragm (21), the rear elastic diaphragm (22), the left elastic diaphragm (23), and the right elastic diaphragm (24), i.e., the front elastic diaphragm speed v1, the rear elastic diaphragm speed v2, the left elastic diaphragm speed v3, and the right elastic diaphragm speed v4; 3.3.3 The controller (33) compares v1, v2, v3, and v4 to obtain the maximum chest wall movement speed v, where v = max{v1, v2, v3, v4}. 3.3.4 The controller (33) determines the interval where the maximum chest wall movement speed v is located to obtain the injury degree of the human chest. If 0 ≤ v ≤ 3.6 m / s, there is no injury; if 3.6 m / s < v ≤ 4.3 m / s, it is a minor injury; if 4.3 m / s < v ≤ 7.5 m / s, it is a moderate injury; if 7.5 m / s < v ≤ 9.8 m / s, it is a medium injury; if v > 9.8 m / s, it is a severe injury. 3.3.5 The controller (33) sends a control signal to the indicator light (32) according to the injury degree of the human chest to control the corresponding color indicator light (32) to turn on. The method is as follows: If there is no injury, control the green LED light to turn on; if it is a minor injury, control the blue LED light to turn on; if it is a moderate injury, control the yellow LED light to turn on; if it is a medium injury, control the red LED light to turn on; if it is a severe injury, control the purple LED light to turn on. Step 4: Obtain the injury degree of the human chest and reset the simulation target for detecting human chest shock wave injury. The method is as follows: 4.1 After the explosion, the user obtains the shock wave injury degree of the human chest at this position according to the color of the lit indicator light (32), that is, the green LED light on represents no injury, the blue LED light on represents a minor injury, the yellow LED light on represents a moderate injury, the red LED light on represents a medium injury, and the purple LED light on represents a severe injury. 4.2 Cut off the power supply of the controller (32) and restart it to complete the reset, realizing the rapid reuse of the simulation target for detecting human chest shock wave injury.

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