Flexible pressure sensing vest for vehicle high-speed collision test
By combining a flexible fabric pressure sensor with an elastic protective layer, the problem of insufficient flexibility in traditional pressure sensors is solved, enabling high-density deployment and high-precision detection on the curved surface of the dummy, thus improving the accuracy of vehicle collision testing.
Patent Information
- Application Number
- CN202511305457.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-12
- Publication Date
- 2025-12-12
AI Technical Summary
The existing pressure-sensing vest sensors lack flexibility, resulting in insufficient detection accuracy and making it difficult to achieve a tight fit and high-density deployment on the curved surface of the dummy.
A flexible fabric pressure sensor is used, combined with an elastic protective layer and a highly conductive coated electrode. Through fused deposition modeling and ultraviolet laser patterning, the sensor thickness is reduced and the density is increased to form a resistance change capture circuit. With the design of the elastic protective layer and the encapsulation layer, the sensor is ensured to be deployed at a high density on the surface of the dummy's curved body.
This technology enables close bonding and high-density deployment of sensors on the curved surface of the dummy, improving detection accuracy and waterproof performance, reducing signal attenuation and installation difficulty, and enhancing test accuracy.
Smart Images
Figure CN121101239A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of pressure sensing waistcoat, in particular to a flexible pressure sensing vest for vehicle high-speed crash test. BACKGROUND
[0002] In the field of automobile safety performance test, the pressure sensing waistcoat for vehicle high-speed crash test is one of the core devices for evaluating the passenger protection effect. It monitors and records the pressure distribution on each part of the dummy body during the crash process in real time, providing key data support for the optimization design of restraint systems such as airbags, seats, and seat belts. The current mainstream pressure sensing technology mainly uses piezoresistive, piezoelectric or capacitive sensors. These sensors work on the principle of triggering resistance / charge / capacitance changes based on pressure. For example, piezoresistive sensors measure the change of internal resistance under pressure to deduce the pressure size. After the sensor integrated in each part of the waistcoat senses the interaction force between the dummy and the seat / seat belt during the crash, it converts the signal into an electrical signal and processes and stores it through the data acquisition system.
[0003] However, the existing technology system has significant technical bottlenecks. Traditional piezoresistive, piezoelectric and capacitive sensors generally have the problem of insufficient softness, which makes it difficult for them to achieve close fitting on the curved surface of the dummy. Especially when a high density of sensor units is required to meet the demand for accurate pressure distribution measurement, the poor compatibility of rigid sensors with flexible waistcoat base materials further exacerbates the installation difficulty. This fitting defect directly leads to pressure transmission distortion, and the mechanical rigidity of the sensor itself inhibits the deformation of the small pressure, ultimately resulting in insufficient detection accuracy. SUMMARY
[0004] The present application aims to provide a flexible pressure sensing vest for vehicle high-speed crash test to solve the problem of insufficient detection accuracy caused by low sensor density and poor softness of the existing pressure sensing waistcoat.
[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solution: a flexible pressure sensing vest for vehicle high-speed crash test, comprising a waistcoat body, the waistcoat body comprising two outer clothing layers, an elastic protection layer is arranged between the two outer clothing layers, external grooves are uniformly arranged on the outer clothing layers, middle grooves are uniformly arranged on the elastic protection layer, the external grooves and the middle grooves correspond one by one, and flexible fabric pressure sensors are arranged on the inner side of the middle grooves. The flexible fabric pressure sensor comprises a double-sided convex peak type pressure sensitive layer arranged in the middle groove, a bottom electrode layer is arranged on the side of the double-sided convex peak type pressure sensitive layer close to the human body, a top electrode layer is arranged on the side of the double-sided convex peak type pressure sensitive layer away from the human body, the top electrode layer and the bottom electrode layer are respectively in close contact with the two sides of the double-sided convex peak type pressure sensitive layer, and an encapsulation layer is arranged on the side of the top electrode layer and the bottom electrode layer away from each other.
[0006] The principle and advantages of the present scheme are: the double convex peak type pressure sensitive layer cooperates with the top / bottom electrode layer to form a resistance change capture loop, and the fabric film packaging process is combined to ensure the IP67 waterproof level while reducing the sensor thickness to below 0.3mm, allowing high-density layout of 1-2 sensor units per square centimeter along the curved surface of the dummy, solving the problem of insufficient adhesion and low layout density of traditional rigid sensors.
[0007] The high-conductivity coating electrode (conductivity≥ S / cm) cooperates with a 2mm insulation channel processed by ultraviolet laser patterning to reduce signal crosstalk by more than 30%, and cooperates with the buffering effect of the elastic protective layer to accurately capture the 0.1ms level of pressure change in the collision transient state.
[0008] The jacket body is composed of the inner and outer clothing layers and the elastic protective layer between the two clothing layers. On the one hand, the elastic protective layer can buffer the impact, and on the other hand, the jacket body can be more attached to the dummy when worn, improving the test accuracy.
[0009] Preferably, as an improvement, the packaging layer includes two packaging parts symmetrically arranged on the side away from each other of the top electrode layer and the bottom electrode layer, and the two packaging parts are respectively convex to the two sides of the middle groove and the side away from each other of the outer groove.
[0010] The improvement has the beneficial effect that the packaging part is convex to the middle groove and the outer groove, so that the sensor can be embedded in the elastic protective layer and the clothing layer to form an "embedded" fixed structure. This design shortens the pressure transmission path by 15% when the sensor is impacted and extruded, reduces signal attenuation caused by interlayer sliding, and provides a positioning reference for the installation of the subsequent compression fixing assembly, ensuring assembly accuracy ≤0.2mm.
[0011] Preferably, as an improvement, the outer edge of the packaging part is provided with an outer edge part, and the two outer edge parts are coated with an adhesive layer, and the two packaging parts are fixed by the adhesive layer. The side away from each other of the two outer edge parts is provided with a compression fixing assembly, and the two compression fixing assemblies are located in the distance space between the corresponding bottom electrode layer and top electrode layer.
[0012] The improved benefits are: the adhesive layer and the compression assembly form a double sealing system of "chemical bonding + mechanical compression". The adhesive layer is selected from modified acrylate glue, which maintains a bonding strength of ≥5 MPa in the temperature range of-40℃ to 120℃; the compression assembly provides an initial pre-compression force through the elastic magnetic ring sheet, so that the shear strength of the adhesive layer is increased by 25% after curing, solving the problem of easy aging and cracking of the traditional single bonding structure, and the axial size of the two compression assemblies is designed to be smaller than the electrode layer spacing, ensuring that the detection area is free of mechanical interference.
[0013] Preferably, as an improvement, the compression fixing assembly includes clamping fixing members symmetrically arranged on the sides of the two outer edge portions away from each other, and the two clamping fixing members are fixedly installed on the sides of the two outer clothing layers close to each other, and the clamping fixing members are coaxially arranged with the outer grooves, and the clamping fixing members are arranged outside the outer grooves.
[0014] The improved benefits are: the annular rubber ring is coaxially arranged with the outer grooves, and cooperates with the magnetic attraction of the elastic magnetic ring sheet to keep the axial positioning accuracy of the sensor ≤0.5mm when the dummy moves. This design avoids the sensor deviation caused by assembly errors of the traditional buckle type fixing, especially in the chest area, it can accurately match the seat belt loading point, solving the problem of chest injury measurement error caused by the position deviation of the safety belt of the traditional Hybrid III dummy.
[0015] Preferably, as an improvement, the clamping fixing member includes an annular rubber ring fixedly installed on the outer clothing layer, and the two annular rubber rings are each installed with an elastic magnetic ring sheet on the side close to each other, and the two corresponding elastic magnetic ring sheets are attracted to each other, and the outer side of the annular rubber ring is provided with a columnar groove, and the side close to the packaging portion of the columnar groove is provided with a tapered groove, and the diameter of the end of the tapered groove close to the columnar groove is greater than the diameter of the end of the tapered groove away from the columnar groove, and the outer side of the annular rubber ring is provided with a clamping mounting member, and the clamping mounting member corresponds to the columnar groove one by one.
[0016] Preferably, as an improvement, the clamping mounting member includes a mounting pad fixedly installed on the outer side of the annular rubber ring, and the mounting pad is fixedly installed with the outer clothing layer, and the two mounting pads corresponding to the two outer clothing layers are each symmetrically installed with a clamping buckle on the side close to each other, and the two corresponding clamping buckles can be clamped.
[0017] Preferably, as an improvement, the two corresponding mounting pads are each fixedly installed with a fixed cylinder on the side close to each other, and the fixed cylinder is movably installed with a movable rod inside, and the side close to the annular rubber ring of the fixed cylinder is provided with a plug rod, and one end of the plug rod is inserted into the columnar groove, and the end of the plug rod located in the columnar groove is provided with a circular arc surface, and the end of the plug rod close to the fixed cylinder is fixedly installed with an end block, and one end of the movable rod is hingedly installed with a connecting rod, and the other end of the connecting rod is hingedly installed with the end block.
[0018] The improved beneficial effect is that the taper groove gradually changes in diameter and matches the arc surface of the plug rod of the clamping mounting part, radial expansion force is generated when the clamping is buckled, and the mechanism strengthens the buckling pressure of the magnetic ring piece through mechanical deformation.
[0019] Preferably, as an improvement, one end of the movable rod is fixedly installed with a spring inside the fixed cylinder, and one end of the spring is fixedly connected with the inner wall of the end of the fixed cylinder.
[0020] The improved beneficial effect is that the spring reset design ensures that the plug rod automatically rebounds when disassembled, achieving the balance of "reliable installation - convenient disassembly".
[0021] Preferably, as an improvement, a guide rod is fixedly installed on one side of the fixed cylinder close to the end block, a guide groove is formed in the inside of the end block, and the guide rod is slidingly installed in the inside of the guide groove.
[0022] The improved beneficial effect is that the cooperation of the guide rod and the guide groove ensures that the movement track of the plug rod is accurately perpendicular, avoiding the jamming phenomenon caused by assembly tolerance of the traditional hinged structure. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is a pressure sensing waistcoat structure diagram for vehicle high-speed collision test of the application; Figure 2 It is a waistcoat body structure diagram of the application; Figure 3 It is a coat layer and elastic protection layer structure diagram of the application; Figure 4 It is an internal structure diagram of the flexible fabric pressure sensor of the application; Figure 5 It is an external structure diagram of the flexible fabric pressure sensor of the application; Figure 6 It is a connection structure diagram of the compression fixing assembly and the flexible fabric pressure sensor of the application; Figure 7 It is a clamping fixing part structure diagram of the application; Figure 8 It is a clamping mounting part structure diagram of the application; Figure 9 It is a movable rod and plug rod connection structure diagram of the application; The reference numerals in the accompanying drawings include: vest body 1, outer layer 101, elastic protective layer 102, outer groove 103, middle groove 104, flexible fabric pressure sensor 2, double-sided protruding peak pressure-sensitive layer 201, top electrode layer 202, bottom electrode layer 203, encapsulation layer 204, encapsulation part 2041, outer edge part 2042, adhesive layer 2043, clamping and fixing assembly 3, clamping and fixing part 301, annular rubber ring 3011, elastic magnetic ring 3012, cylindrical groove 3013, conical groove 3014, snap-fit mounting part 302, mounting pad 3021, snap-fit buckle 3022, fixing cylinder 3023, movable rod 3024, spring 3025, end block 3026, insertion rod 3027, guide groove 3028, guide rod 3029, and connecting rod 30210. Detailed Implementation
[0024] The following detailed description illustrates the specific implementation method: Example As attached Figures 1-9 As shown, a flexible pressure-sensing vest for high-speed vehicle collision testing includes a vest body 1, which consists of two outer layers 101 and an elastic protective layer 102 sandwiched between the two layers. The outer layers 101 have uniformly distributed external grooves 103, and the elastic protective layer 102 has correspondingly distributed central grooves 104, forming an axially continuous "external groove-central groove" structure. The elastic protective layer 102 uses a highly elastic cushioning material, combining impact cushioning with dummy adhesion, ensuring a tight fit between the vest and the dummy surface during testing and improving pressure transmission accuracy.
[0025] The flexible fabric pressure sensor 2 is embedded in the central groove 104. The flexible fabric pressure sensor 2 includes a double-sided convex peak pressure-sensitive layer 201. A bottom electrode layer 203 is provided on the side of the double-sided convex peak pressure-sensitive layer 201 close to the human body, and a top electrode layer 202 is provided on the side of the double-sided convex peak pressure-sensitive layer 201 away from the human body. The top electrode layer 202 and the bottom electrode layer 203 are respectively in close contact with the two sides of the double-sided convex peak pressure-sensitive layer 201. An encapsulation layer 204 is provided on the side of the top electrode layer 202 and the bottom electrode layer 203 that are far away from each other.
[0026] The packaging layer 204 includes two packaging parts 2041 symmetrically arranged on the side away from each other of the top electrode layer 202 and the bottom electrode layer 203, and the two packaging parts 2041 respectively protrude to the two sides of the middle groove 104 and extend to the side away from each other of the two opposite outer grooves 103. The outer edge of the packaging part 2041 is provided with an outer edge part 2042, and the two outer edge parts 2042 are coated with an adhesive layer 2043, and the two packaging parts 2041 are fixed by the adhesive layer 2043. The side away from each other of the two outer edge parts 2042 is provided with a compression fixing assembly 3, and the two compression fixing assemblies are located on the side close to each other of the two corresponding bottom electrode layers and top electrode layers, so as to avoid interference of the compression fixing assembly 3 with the extrusion of the top electrode layer to the bottom electrode layer during the extrusion and compression.
[0027] The overall structure of the flexible fabric pressure sensor 2 is a multi-layer functional fabric stack, forming a resistance change capture loop, increasing the detection range and improving the detection accuracy. The packaging layer 204 arranged outside the flexible fabric pressure sensor 2 uses a fabric film coating process to ensure its softness while taking into account the waterproof performance.
[0028] The compression fixing assembly 3 includes clamping fixing pieces 301 symmetrically arranged on the side away from each other of the two outer edge parts 2042, and the two clamping fixing pieces 301 are fixedly installed on the side close to each other of the two outer clothing layers 101, and the clamping fixing pieces 301 are coaxially arranged with the outer grooves 103 and located on the outer side of the outer grooves 103.
[0029] The clamping fixing piece 301 includes an annular rubber ring 3011 fixedly installed on the outer clothing layer 101, and the side close to each other of the two annular rubber rings 3011 is provided with an elastic magnetic ring piece 3012. The two elastic magnetic ring pieces 3012 are attracted to each other. The outer side of the annular rubber ring 3011 is provided with a columnar groove 3013 at equal angles. The end of the columnar groove 3013 in the annular rubber ring 3011, i.e. the side close to the packaging part 2041, is provided with a tapered groove 3014. The columnar groove 3013 and the tapered groove 3014 are in communication, and the diameter of the end of the tapered groove 3014 close to the columnar groove 3013 is greater than the diameter of the end of the tapered groove 3014 away from the columnar groove 3013.
[0030] The outer side of the annular rubber ring 3011 is provided with a clamping installation piece 302 at equal angles, and the clamping installation piece 302 corresponds to the columnar groove 3013 one by one. The side close to the outer edge part 2042 of the annular rubber ring 3011 on the outer clothing layer 101 is provided with an elastic magnetic ring piece 3012. During installation, the two elastic magnetic ring pieces 3012 are attracted to each other to clamp and fix the flexible fabric pressure sensor 2. At the same time, under the attraction and pressure of the two elastic magnetic ring pieces 3012, the connection strength of the two outer edge parts 2042 is improved, and the sealing and waterproof effect is improved.
[0031] The clamping mounting piece 302 comprises equiangular fixed mounting pads 3021 fixedly mounted outside the annular rubber ring 3011, the mounting pads 3021 are fixedly mounted with the outer garment layers 101, the two mounting pads 3021 corresponding to the two outer garment layers 101 are symmetrically mounted with clamping buckles 3022 on the side close to each other, the two corresponding clamping buckles 3022 can be clamped, the vest body 1 is composed of the inner and outer garment layers 101 and the elastic protective layer 102 between the two outer garment layers 101, on the one hand, the elastic protective layer 102 can buffer the impact to a certain extent, on the other hand, the vest body 1 can be more attached to the dummy when worn, the test precision is improved, and the clamping buckles 3022 are used for clamping mounting, so that the flexible fabric pressure sensor 2 is conveniently disassembled, maintained and assembled, the two mounting pads 3021 corresponding to each other are fixedly mounted with fixed cylinders 3023 on the side close to each other, the fixed cylinders 3023 are movably mounted with movable rods 3024, the fixed cylinders 3023 are provided with plug rods 3027 on the side close to the annular rubber ring 3011, one end of the plug rod 3027 is inserted into the column-shaped groove 3013, one end of the plug rod 3027 located in the column-shaped groove 3013 is provided with a circular arc surface, the plug rod 3027 is fixedly mounted with an end block 3026 on the end close to the fixed cylinder 3023, the movable rod 3024 is hingedly mounted with a connecting rod 30210 on one end, the other end of the connecting rod 30210 is hingedly mounted with the end block 3026, the movable rod 3024 is fixedly mounted with a spring 3025 on one end located in the fixed cylinder 3023, one end of the spring 3025 is fixedly connected with the end inner wall of the fixed cylinder 3023, the fixed cylinder 3023 is fixedly mounted with a guide rod 3029 on the side close to the end block 3026, the end block 3026 is provided with a guide groove 3028 in the inside, the guide rod 3029 is slidingly mounted in the guide groove 3028, when the two clamping buckles 3022 are attracted, the movable rods 3024 on the two corresponding fixed cylinders 3023 are pressed to move towards the inside of the fixed cylinder 3023, the plug rod 3027 is inserted into the tapered groove 3014 with gradually decreasing diameter, further pressure is generated on the two elastic magnetic ring pieces 3012 to move closer to each other, and the fixing and waterproof effects are further improved.
[0032] Working principle: in use, first, the vest body 1 is worn on the dummy, the dummy is placed in the vehicle, and then the vehicle is controlled to perform high-speed collision test, the flexible fabric pressure sensor 2 evenly and densely arranged on the vest body 1 is used to test the pressure of the collision, and the test precision is improved. The vest body 1 comprises inner and outer garment layers 101, and an elastic protective layer 102 with elasticity is arranged between the two outer garment layers 101, on the one hand, the elastic protective layer 102 can buffer the impact to a certain extent, on the other hand, the vest body 1 can be more attached to the dummy when worn, and the test precision is improved. In the installation, the flexible fabric pressure sensor 2 is installed in the middle groove 104, and then two outer clothing layers 101 are installed on the inner and outer sides of the elastic protective layer 102, so that the two sides of the flexible fabric pressure sensor 2 protrude to the sides away from each other of the two outer clothing layers 101, and the outer edge part 2042 on the flexible fabric pressure sensor 2 is located on the side close to each other of the two corresponding annular rubber rings 3011. When the two outer clothing layers 101 are combined, the corresponding clamping buckles 3022 on the two outer clothing layers 101 are clamped, the installation is completed, and the disassembly and maintenance of the flexible fabric pressure sensor 2 are facilitated. In the installation, the two annular rubber rings 3011 on the side close to each other are provided with elastic magnetic ring pieces 3012, and the two elastic magnetic ring pieces 3012 are attracted to each other when clamped. On the one hand, the flexible fabric pressure sensor 2 is clamped and fixed, and on the other hand, the two packaging layers 204 on the flexible fabric pressure sensor 2 are pressed tightly, further improving the waterproof effect. At the same time, when clamped, the two corresponding movable rods 3024 end portions are in contact and pressed to move towards the inside of the fixed cylinder 3023, so that the connecting rod 30210 pushes the plug rod 3027 towards the inside of the tapered groove 3014. Since the diameter of the tapered groove 3014 gradually decreases from the end close to the columnar groove 3013 to the other end, the annular rubber ring 3011 is lifted, further generating a pressure on the two elastic magnetic ring pieces 3012 to move close to each other, further improving the fixing and waterproof effect. In the detection, the overall structure of the flexible fabric pressure sensor 2 is a multi-layer functional fabric stack, forming a resistance change capture loop. The structure is composed of a double-sided convex peak type pressure sensitive layer 201, a top electrode layer 202, a bottom electrode layer 203, and a packaging layer 204. The electrode uses a fused deposition bonding process to composite a high-conductivity coating on the surface of the conventional fabric to reduce the overall thickness of the electrode. High conductivity can increase the transmission speed of the electrode to the change of the sensor electric signal, improve the collection frequency, and the thickness reduction can also reduce the influence of the electrode material structure itself on data collection. The ultraviolet laser is used for patterning processing, and the width of the insulating channel formed by light and heat ablation is 2mm, which reduces the mutual crosstalk between the sensing units. The packaging layer 204 uses a fabric film coating process to ensure its softness while considering the waterproof performance.
[0033] The above is only an embodiment of the present application, and the specific technical solutions and / or common knowledge of the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical solutions of the present application, some modifications and improvements can be made, which should also be considered as the protection scope of the present application, which will not affect the effect and practicality of the patent. The protection scope claimed in this application should be based on the content of its claims, and the specific implementation mode and the like in the description can be used to explain the content of the claims.
Claims
1. A flexible pressure sensing vest for use in high speed crash testing of a vehicle, comprising a vest body, characterised in that: The waistcoat body comprises two outer clothing layers, an elastic protection layer is arranged between the two outer clothing layers, external grooves are uniformly arranged on the outer clothing layers, middle grooves are uniformly arranged on the elastic protection layer, the external grooves and the middle grooves correspond to each other, and flexible fabric pressure sensors are arranged on the inner side of the middle grooves. The flexible fabric pressure sensor comprises a double-sided convex peak type pressure sensitive layer arranged in the middle groove, a bottom electrode layer arranged on the side of the double-sided convex peak type pressure sensitive layer close to the human body, a top electrode layer arranged on the side of the double-sided convex peak type pressure sensitive layer away from the human body, and an encapsulation layer arranged on the side of the top electrode layer and the bottom electrode layer away from each other.
2. The flexible pressure sensing vest for vehicle high speed crash test according to claim 1, wherein: The encapsulation layer comprises two encapsulation parts symmetrically arranged on the side of the top electrode layer and the bottom electrode layer away from each other, the two encapsulation parts are respectively protruded to the two sides of the middle groove, and the side of the external grooves away from each other.
3. The flexible pressure sensing vest for vehicle high speed crash test according to claim 2, wherein: The outer edge of the encapsulation part is provided with an outer edge part, a glue layer is coated between the two outer edge parts, the two encapsulation parts are fixedly attached by the glue layer, and the side of the two outer edge parts away from each other is provided with a pressing and fixing assembly.
4. The flexible pressure sensing vest for vehicle high speed crash test according to claim 3, wherein: The pressing and fixing assembly comprises clamping fixing pieces symmetrically arranged on the side of the two outer edge parts away from each other, the two clamping fixing pieces are respectively fixedly installed on the side of the two outer clothing layers close to each other, the clamping fixing pieces are coaxially arranged with the external grooves, and the clamping fixing pieces are arranged on the outer side of the external grooves.
5. The flexible pressure sensing vest for vehicle high speed crash test according to claim 4, wherein: The clamping fixing piece comprises an annular rubber ring fixedly installed on the outer clothing layer, an elastic magnetic ring piece is installed on the side of the two annular rubber rings close to each other, the two elastic magnetic ring pieces magnetically attract each other, a columnar groove is arranged on the outer side of the annular rubber ring, a tapered groove is arranged on the side of the columnar groove close to the encapsulation part, the diameter of one end of the tapered groove close to the columnar groove is greater than the diameter of the other end of the tapered groove away from the columnar groove, and a clamping mounting piece is arranged on the outer side of the annular rubber ring.
6. The flexible pressure sensing vest for vehicle high speed crash test according to claim 5, wherein: The clamping mounting piece comprises a mounting pad fixedly installed on the outer side of the annular rubber ring, the mounting pad is fixedly installed with the outer clothing layer, and a clamping buckle is symmetrically installed on the side of the two mounting pads of the two outer clothing layers close to each other.
7. The flexible pressure sensing vest for vehicle high speed crash test according to claim 6, wherein: The corresponding two mounting pads are fixedly installed with a fixing cylinder on the side close to each other, a movable rod is movably installed in the fixing cylinder, a plug rod is arranged on the side of the fixing cylinder close to the annular rubber ring, one end of the plug rod is inserted into the columnar groove, a circular arc surface is arranged on the end of the plug rod in the columnar groove, an end block is fixedly installed on the end of the plug rod close to the fixing cylinder, a connecting rod is hingedly installed on one end of the movable rod, and the other end of the connecting rod is hingedly installed with the end block.
8. The flexible pressure sensing vest for vehicle high speed crash test according to claim 7, wherein: One end of the movable rod in the fixing cylinder is fixedly installed with a spring, and one end of the spring is fixedly connected with the end inner wall of the fixing cylinder.
9. The flexible pressure sensing vest for vehicle high speed crash test according to claim 8, wherein: A guide rod is fixedly installed on the side of the fixing cylinder close to the end block, a guide groove is arranged in the inner part of the end block, and the guide rod is slidingly installed in the inner part of the guide groove.