Automobile collision dummy model contact distribution force information detection system

Abstract

The utility model relates to a contact distribution force information detection system for an automobile crash dummy model. The system comprises a dummy model, and flexible touch sensors arranged at the head, neck, chest, upper limbs, hip, lower limbs and / or feet of the dummy model. The flexible touch sensor comprises an upper electrode layer, a lower electrode layer, an anti-tear flexible plastic packaging layer and an ion fiber layer placed between the upper electrode layer and the lower electrode layer. And the tear-resistant flexible plastic package layer wraps and packages the upper and lower electrode layers and the ion fiber layer. The whole body of the crash test model dummy is full of the flexible touch sensors, contact distribution force information of the crash test model dummy can be directly obtained, the defect that the current crash dummy lacks the contact distribution force information is overcome, and the crash test model dummy is low in cost and easy to operate.

Description

Technical Field

[0001] The utility model belongs to the field of automobile collision dummy test, and in particular relates to a contact distribution force information detection system for an automobile collision dummy model. Background Art

[0002] The collision test is an important test for detecting and evaluating the safety performance of automobiles. The test equipment that tests and obtains the collision damage results is usually anthropomorphized as a collision dummy. The collision dummy is designed to simulate the situation of a real person being injured in a collision, so it is required that the collision dummy be as similar to a real person as possible. Therefore, the collision dummy used for testing is required to objectively simulate a real human in terms of external dimensions and shape, supplemented by various types of sensors embedded in various parts to obtain collision process data in real collision tests, simulating the human response to the impact, acceleration, deflection, force and inertial moment generated during the collision process.

[0003] In the NCAP evaluation system, the collision test dummies generally use Hybrid III dummies, which are developed based on the body characteristics of European and American people. The dummies used in my country's automobile collision safety regulations are also Hybrid III series dummies that represent the human body size of European and American countries.

[0004] The test dummies of the anthropomorphic test device (ATD) are equipped with sensors in various parts of the human body. Various types of sensors, including acceleration, angular acceleration, force, bending moment, displacement, etc., are often embedded in the dummy's head, neck, chest, upper limbs, hips, lower limbs, feet, and various forms of connecting machines. These electronic sensors can actually measure the impact force, acceleration, and deformation in a collision. In Hybrid III, these sensors can record a total of 37,200 different data in one ATD. The test personnel obtain the data collected by the sensors in various parts in real time for coupling calculations, and measure the damage to various parts of the collision dummy during the collision. The price of the sensors and the corresponding acquisition system, processing software, etc. are all very expensive.

[0005] At present, the research on dummy models in the domestic market is limited to the sensor circuits or components of the acceleration, angular acceleration, force, bending moment, displacement, etc. inside or on the surface of the dummy, signal acquisition and analysis circuits, data monitoring and function control circuits (or components) to achieve the collision safety performance test of the car. Further research includes a Chinese invention patent with the public number CN110334784 B, which provides a signal position recognition system acting on the dummy model, using electronic tags and sensitive elements for position recognition, which is relatively costly. Utility Model Content

[0006] In view of the shortcomings of the prior art, the technical problem that the utility model intends to solve is to provide a customizable large-area flexible tactile sensor as the "skin" of the collision dummy, and to obtain the contact distribution force information received by the dummy model in the collision test in combination with the contact distribution force information detection system. The flexible tactile sensor is a capacitive flexible sensor, which is covered on the head, neck, chest, upper limbs, hips, lower limbs, and feet of the dummy model, so that the dummy model can perceive what force is acting on the body and avoid all different types of injuries caused by driving a car to the greatest extent.

[0007] The technical solution of the utility model to solve the technical problem is:

[0008] A vehicle collision dummy model contact distribution force information detection system includes a model dummy, and the detection system also includes flexible tactile sensors arranged at the head, neck, chest, upper limbs, hips, lower limbs and / or feet of the model dummy;

[0009] The flexible tactile sensor comprises an upper electrode layer, a lower electrode layer, a tear-resistant flexible plastic sealing layer, and an ion fiber layer placed between the upper and lower electrode layers; the tear-resistant flexible plastic sealing layer wraps and seals the upper and lower electrode layers and the ion fiber layer.

[0010] Furthermore, the tear-resistant flexible plastic sealing layer is made of at least one of TPU film, biaxially oriented polypropylene film (BOPP), biaxially oriented polypropylene (BOPP) film, polyvinylidene chloride (PVDC) film, EVA film, and PVA film.

[0011] Furthermore, the sizes of the flexible tactile sensors at different locations are based on the sizes of the outer surfaces of the corresponding locations of the model dummy after curved surface unfolding.

[0012] Furthermore, the system includes n flexible tactile sensors, n signal acquisition modules and 1 embedded computer platform, one flexible tactile sensor is set at one location, one flexible tactile sensor is connected to one signal acquisition module, and all signal acquisition modules communicate with the embedded computer platform; n is a natural number.

[0013] Further, the circuit board of the signal acquisition module includes a processor, a data output port, a column scanning unit, a row scanning unit and an excitation source. A plurality of longitudinal electrodes and transverse electrodes are arranged on the upper and lower electrode layers of the flexible tactile sensor, and a circuit connection end is led out at the edge thereof. The transverse electrodes and the longitudinal electrodes intersect vertically in space to form a plurality of intersecting parts, and each intersecting part constitutes a capacitor unit; the circuit connection end is connected to a connection terminal 13, each connection terminal is respectively connected to a transfer interface of a corresponding size, the transfer interface is connected to a flexible flat cable 17 of a corresponding size, and each flexible flat cable is inserted into a circuit input port of the circuit board connected to the corresponding signal acquisition module; the flexible flat cable is respectively connected to the row scanning unit and the column scanning unit through the corresponding circuit input port, the row scanning unit and the column scanning unit are respectively connected to the processor input port, and the row and column scanning units have AD conversion functions;

[0014] The data output port is used for data output and connection to a computer platform.

[0015] Furthermore, the embedded computer platform has built-in SolidWorks software, Auto CAD software, LabVIEW software, Anaconda software, and VSCcode software;

[0016] The detection system also has a display unit that can display a contact distribution force image. The display unit consists of three areas: a communication setting and communication status display area 1, a tactile signal display area 2, and an information display area 15. The information display area 15 has a collection, filtering, and recognition result display box.

[0017] Furthermore, the chest cavity of the model dummy is made of steel, the shoulder blades are made of aluminum, and the pelvis is made of plastic. The flexible tactile sensor is covered on the surface of the model dummy, and the overall thickness of the flexible tactile sensor is 1-3 mm.

[0018] Furthermore, the flexible tactile sensor is covered on the model dummy in the form of clothing.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. The contact distribution force information can be directly obtained. The collision test model dummy is covered with flexible tactile sensors, which can directly obtain the contact distribution force information of the collision test model dummy, making up for the lack of contact distribution force information of the current collision dummy, and it is low-cost and easy to operate.

[0021] 2. High sensitivity. The flexible tactile sensor uses a capacitive flexible sensor. The ion fiber layer between the upper and lower electrode layers effectively improves the sensitivity of the sensor, converts pressure into capacitance to the maximum extent, and makes the measurement structure more accurate. It can effectively collect the force exerted on the model dummy in the collision test, and obtain the contact distribution force information exerted on the model dummy during the entire process of the car collision in near real time.

[0022] 3. The flexible tactile sensor has a stable structure. It is encapsulated with a tear-resistant flexible plastic layer, preferably TPU film encapsulation. TPU is a highly elastic plastic material with excellent bending, stretching and tearing resistance. The sensor has a stable structure and can collect the distributed force information of the model dummy to the greatest extent.

[0023] 4. Various sizes. The flexible tactile sensor is customized according to the different parts of different mannequins to fit the body curve of the model mannequin. At the same time, different resolutions are set according to the different precisions required for different parts. The fully fitted "flexible skin" can be put on different mannequins to achieve full surface fit of the collision mannequin skin and quick putting on and taking off. It has also achieved modular use and can be mass-produced and replaced.

[0024] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of a part of the model dummy of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of an Asian standard adult female mannequin of the utility model;

[0027] FIG3( a ) is a schematic diagram of the structure of the upper electrode layer at the front of the flexible tactile sensor at the hip of the model dummy in Example 1 of the present utility model;

[0028] FIG3( b ) is a schematic diagram of the structure of the upper electrode layer at the rear of the flexible tactile sensor at the hip of the model dummy in Example 1 of the present utility model;

[0029] FIG4( a ) is a schematic diagram of the structure of the lower electrode layer at the front of the flexible tactile sensor at the hip of the model dummy in Example 1 of the present utility model;

[0030] FIG4( b ) is a schematic diagram of the lower electrode layer structure of the rear portion of the flexible tactile sensor for the hip of the model dummy in Example 1 of the present utility model;

[0031] FIG5( a ) is a schematic diagram of the overall front structure of the flexible tactile sensor for the hip of a model dummy according to Embodiment 1 of the present invention;

[0032] FIG5( b ) is a schematic diagram of the overall rear structure of the flexible tactile sensor for the hip of the model dummy in Example 1 of the utility model;

[0033] Figure 6 This is a schematic diagram of the structure of the flexible tactile sensor for upper limbs according to Embodiment 2 of the present utility model;

[0034] Figure 7 This is a schematic diagram of the connection between the upper limb flexible tactile sensor and the embedded computer platform in Example 2 of the utility model;

[0035] Figure 8 This is a system framework diagram of the detection system of the utility model;

[0036] Fig. 9 This is a circuit diagram of the signal acquisition module in the utility model;

[0037] Fig.10 This is an interface diagram of the display part in the utility model;

[0038] In the figure: 1. Communication setting and communication status display area, 2. Tactile signal display area, 3. Head, 4. Neck, 5. Chest, 6. Upper limbs, 7. Hips, 8. Lower limbs, 9. Feet, 10. Upper electrode layer, 11. Electrodes, 12. Circuit connection end, 13. Connection terminal, 14. Lower electrode layer, 15. Information display area, 16. Adapter, 17. Flexible cable, 18. Signal acquisition module circuit board, 19. Embedded computer platform. DETAILED DESCRIPTION

[0039] The specific embodiments of the present invention are given below. The specific embodiments are only used to further illustrate the present invention in detail and do not limit the protection scope of the claims of the present invention.

[0040] The utility model provides a contact distribution force information detection system for a car collision model dummy, comprising a model dummy, flexible tactile sensors arranged at the positions of the model dummy's head 3, neck 4, chest 5, upper limbs 6, hip 7, lower limbs 8, and foot 9, and a signal acquisition module; the flexible tactile sensor comprises an upper electrode layer 10, a lower electrode layer 14, an ion fiber layer arranged between the upper and lower electrode layers, and a tear-resistant flexible plastic sealing layer wrapping the upper and lower electrode layers and the ion fiber layers; the upper electrode layer 10 and the lower electrode layer 14 are both affixed with a plurality of electrodes 11, the upper and lower surfaces of the ion fiber layer are respectively closely attached to the lower surface of the upper electrode layer 10 and the upper surface of the lower electrode layer affixed with the electrodes 11, the upper electrode layer 10, the lower electrode layer 14 and the ion fiber layer are plastic-sealed by a TPU film, the tear-resistant flexible plastic sealing layer has good tear resistance and strong bending flexibility, can be closely worn on the surface of the model dummy, and can withstand the impact and friction of a car collision test.

[0041] Further, the size of the flexible tactile sensor at different parts is based on the size of the outer surface of the corresponding part of the model dummy after the curved surface is unfolded. The outer surface of the part to be worn by the model dummy (head, neck, chest, upper limbs, hips, lower limbs, feet) is curvedly unfolded to obtain the size of the flexible tactile sensor covered by the outer skin of the model dummy. A longitudinal electrode is designed on the upper electrode layer of the flexible tactile sensor of this size, and a longitudinal circuit connection end 12 with a lead is led out at the edge; B transverse electrodes are designed on the lower electrode layer of the flexible tactile sensor of this size, and a transverse circuit connection end 12 with b lead is led out at the edge, and A, B, a and b are all positive integers; A and a can be the same, or a is greater than A. The B transverse electrodes and the A longitudinal electrodes intersect vertically in space to form a number of intersections, and each intersection constitutes a capacitor unit. Each capacitor unit constitutes a small sensor unit, and this part forms a total of A*B array capacitor units. The above-mentioned horizontal and vertical circuit connection ends are respectively connected by connecting terminals 13, each connecting terminal is respectively connected to a conversion interface 16 of a corresponding size, the conversion interface is connected to a flexible flat cable 17 of a corresponding size, and each flexible flat cable is inserted into the circuit input port of the circuit board connected to the corresponding signal acquisition module.

[0042] The model dummy is made of metal and plastic. Its chest is made of steel, its shoulder blades are made of aluminum, and its pelvis is made of plastic. The flexible tactile sensor is covered on the surface of the model dummy with a thickness of about 1-3 mm. The number of electrodes, electrode width, and spacing between electrodes of the upper electrode layer and the lower electrode layer of each part can be flexibly designed according to actual needs.

[0043] The model dummy can be an adult mannequin, a female mannequin or a child mannequin, etc., with different types and specifications. The adult mannequin has three specifications: a 50% mannequin (a medium-sized mannequin with a height of 1.77 meters and a weight of 86 kilograms), a 95% mannequin (a large mannequin with a height of 1.88 meters and a weight of 108 kilograms), and a 5% mannequin (a short mannequin with a height of 1.48 meters and a weight of 56 kilograms).

[0044] The female model is: an Asian standard adult female model (1.62 meters tall, 62 kilograms in weight).

[0045] There are six specifications of child mannequins: 6-month mannequin (height 67 cm, weight 10 kg), 12-month mannequin (height 76 cm, weight 13 kg), 18-month mannequin (height 83 cm, weight 16 kg), 3-year-old mannequin (height 97 cm, weight 20 kg), 6-year-old mannequin (height 130 cm, weight 30 kg), and 10-year-old mannequin (height 138 cm, weight 36 kg).

[0046] The circuit board of the signal acquisition module (see Fig. 9) includes a processor, a data output port, a column scanning unit, a row scanning unit and an excitation source (not shown in the figure). The processor is the core chip of the circuit board and adopts an STM32 single-chip microcomputer. The soft flat cables of the horizontal electrodes and the vertical electrodes connected to the flexible tactile sensor are respectively connected to the row scanning unit and the column scanning unit through the corresponding circuit input ports. The row scanning unit and the column scanning unit are respectively connected to the processor input port. The row and column scanning units have AD conversion functions; the data output port includes a USB output port, an RJ-45 interface, and a virtual serial port (transmitted wirelessly) for data output and connection to an embedded computer platform. A loop is formed between the excitation source and the processor on the circuit board through an array of flexible tactile sensors. The contact distribution force information of the entire array of flexible tactile sensors is obtained by matrix scanning (row scanning, column scanning), and the contact distribution force information is uploaded to the embedded computer platform, which is convenient for data analysis and subsequent coupling of other types of sensor data and other processing operations.

[0047] Furthermore, the communication method used for data uploading adopts a USB serial port or a virtual serial port to upload the most direct contact distribution force information of the collision to an embedded computer platform, and the embedded computer platform can be a PC.

[0048] The embedded computer platform is equipped with SolidWorks software (for surface unfolding of the outer surface of the model dummy's body surface), Auto CAD software (for designing and drawing electrode patterns), LabVIEW software (for building a contact distribution force information database of the collision dummy's collision process), Anaconda software (for training a neural network model of a 3DCNN neural network architecture), and VSCcode software (for displaying contact distribution force images).

[0049] An existing collision dummy or M participants are used to conduct a car collision test to participate in the flexible tactile sensor interaction, and then a pre-interaction action test is carried out. L predetermined interaction actions are applied to the flexible tactile sensor. Each interaction action is repeated N times. The tactile information collected by the signal acquisition module during one interaction action is recorded as an action sample, which includes contact distribution force data of car collision processes in multiple directions, multiple angles, and different degrees. All data are collected to construct a contact distribution force information database for human-computer interaction.

[0050] Furthermore, the detection system also has a display unit capable of displaying a contact force distribution image, see Fig.10The display part has a GUI interface, which allows the test personnel to view the status window of the collision dummy including the contact distribution force information. It consists of three areas: communication setting and communication status display area 1, tactile signal display area 2, and information display area 15. It can intuitively run and display the data collected by the collision dummy during the collision process, which is convenient for the test personnel to perform system control operations. The information display area 15 has a collection, filtering, and recognition result display box.

[0051] The working principle and workflow of the utility model are:

[0052] The conductive electrodes formed by the upper and lower electrode layers and the solid electrolyte in the ion fiber layer, under the action of external electricity and external pressure, the ions move to produce changes in capacitance, and the changes in capacitance are converted into electrical signals and transmitted to the signal acquisition module and embedded computer platform, thereby obtaining contact distribution force information. It helps researchers determine what forces will act on the body and where they will be generated, which can help them predict all different types of injuries. This data can be used to determine whether something may be a flesh injury or an internal injury, etc.

[0053] [Example 1]

[0054] The vehicle collision model dummy contact distribution force information detection system of this embodiment includes a model dummy and a flexible tactile sensor. The flexible tactile sensor at the hip of the model dummy is taken as an example (see Figure 1 -5), the flexible tactile sensor is covered on the hip frame of the model dummy in the form of clothing. The flexible sensor includes an upper electrode layer 10, a lower electrode layer 14, electrodes 11 attached to the upper and lower surfaces of the upper and lower electrode layers, an ion fiber layer placed between the upper and lower electrode layers, and a tear-resistant flexible plastic sealing layer;

[0055] The upper electrode layer 10 at the front of the hip is provided with 15 longitudinally parallel electrodes, and the lower electrode layer 14 is provided with 6 transversely parallel electrodes (see Figures 3(a) and 4(b)); the upper electrode layer 1 at the back of the hip is provided with 15 longitudinally parallel electrodes, and the lower electrode layer 14 is provided with 6 transversely parallel electrodes (see Figures 3(b) and 4(b)); the electrodes on the upper electrode layer 10 and the lower electrode layer 14 intersect vertically in space, and each intersection constitutes a capacitor unit, and each capacitor unit constitutes a small sensor unit, that is, the flexible tactile sensor at the hip has 90 and 90 array sensor units at the front and back of the hip respectively, and there are 180 array sensor units in the hip area.

[0056] The model dummy hip frame adopts the frame of Asian standard adult female mannequin 2, and the front / back surface area size of the hip is about 280x120mm, and the width of the above-mentioned electrode is 15mm.

[0057] The flexible tactile sensor at the hip of the model dummy of this embodiment has the circuit connection end 12 and the connection terminal 13 gathered in the internal gap of the hip of the model dummy. The outer skin of the model dummy is only covered with the flexible tactile sensor, and the circuit leads are placed in the internal gap of the model dummy skeleton.

[0058] [Example 2]

[0059] The vehicle collision model dummy contact distribution force information detection system of this embodiment includes a model dummy and a flexible tactile sensor. The flexible tactile sensor of the upper limb of the model dummy is taken as an example (see Figure 1 , 2 , 6), the flexible tactile sensor is covered on the upper limb frame of the model dummy in the form of clothing. The flexible sensor includes an upper electrode layer 10, a lower electrode layer 14, electrodes 11 attached to the upper and lower surfaces of the upper and lower electrode layers, and an ion fiber layer placed between the upper and lower electrode layers; the upper electrode layer 10 of the upper limb is provided with 12 longitudinal parallel electrodes, and the lower electrode layer 14 is provided with 30 transverse parallel electrodes; the electrodes on the upper electrode layer 10 and the lower electrode layer 14 intersect vertically in space, and each intersection constitutes a capacitor unit, and each capacitor unit constitutes a small sensor unit, that is, the flexible tactile sensor of the upper limb has 360 array sensor units;

[0060] The upper limb frame of the model dummy adopts the frame of the Asian standard adult female mannequin 2, and the surface area size of the upper limb is about 180*400mm, and the width of the above-mentioned electrode is 12mm.

[0061] The flexible tactile sensor for the upper limb of the model dummy of this embodiment has the circuit connection end 12 and the connection terminal 13 gathered in the internal gap of the model dummy skeleton. The outer skin of the model dummy is only covered with the flexible tactile sensor. The circuit wire is placed in the internal gap of the model dummy skeleton and connected to the circuit board of the signal acquisition module. It is connected to the embedded computer platform (see FIG. 1 ) through wireless transmission or USB data line communication. Figure 7 ).

[0062] Similarly, the model dummy's head, neck, chest, upper limbs, hips, lower limbs, and feet have 536, 144, 680, 720, 180, 1200, and 372 array sensor units respectively, and the Asian standard adult female human model has a total of 3832 array sensor units throughout the body.

[0063] [Example 3]

[0064] The automobile collision model dummy contact distribution force information detection system of this embodiment (see Figure 8) includes n flexible tactile sensors, n signal acquisition modules and an embedded computer platform. A flexible tactile sensor is set at one part, and one flexible tactile sensor is connected to a signal acquisition module. All signal acquisition modules communicate with the embedded computer platform, realizing a detection system combining decentralized intelligent modules with terminal intelligent modules. The n flexible tactile sensors are respectively installed on different parts of the model dummy body surface carrier, and each flexible tactile sensor is communicated with its own signal acquisition module to form multiple subsystems. These subsystems collect tactile information and perform underlying data processing and preliminary identification, and uniformly transmit the processing and identification results to an embedded computer platform to establish a human-computer interactive tactile information database, cognitive identification processing and display contact distribution force image interface, and obtain real-time contact distribution force information received by the model dummy during the entire process of car collision. The specific data processing and algorithm process can be implemented based on existing technologies.

[0065] Fig.10 This is the simple GUI interface of this embodiment. The test results are as follows Fig.10 As shown, the communication setting and communication status display area 1 displays the connection mode of the signal acquisition module (USB, TCP, UDP, wireless transmission, etc.); the tactile signal display area 2 displays the contact distribution force tactile image. When the applied force acts on the model dummy, the GUI records and displays the contact distribution force graph; the information display area is used to display the acquisition, filtering, and recognition result data information.

[0066] The application of the flexible tactile sensor in this embodiment makes the collision test detection highly sensitive and flexible, and can perform the collision test at a lower cost and with simple operation. The signal acquisition module can achieve a millisecond-level response speed, a wide adjustable range of sensitivity and resolution, and high reliability.

[0067] Put a model dummy covered with a large area of ​​flexible tactile sensors into the car, and then start the collision test. According to the collected tactile information and collision information, upload it to the embedded computer platform, compare and analyze it with multiple different action models in the human-computer interaction tactile information database built in the early stage, and output the result with the highest probability of the interactive action category. In this way, the information of the contact distribution force of the collision dummy during the collision is obtained, and a data analysis template and parameter indicator system are provided for application research based on automobile safety performance testing. The probability output here can be realized by using a deep learning neural network model, and the specific neural network structure can be realized based on existing technologies.

[0068] Therefore, the utility model can directly obtain the contact distribution force information in the model dummy collision test, and at the same time meet the requirements of high sensitivity, full body coverage, stable structure, and various sizes. It has high efficiency, good stability, safety and reliability, simple operation, and fast response speed. It provides a new detection idea for the model dummy collision test and saves test costs.

[0069] The above describes in detail the preferred specific embodiments of the utility model. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

[0070] Anything not described in the present invention is applicable to the prior art.

Claims

1. A vehicle collision dummy model contact distribution force information detection system, comprising a model dummy, characterized in that: The detection system also includes flexible tactile sensors arranged at the head, neck, chest, upper limbs, hips, lower limbs and / or feet of the model dummy; The flexible tactile sensor comprises an upper electrode layer, a lower electrode layer, a tear-resistant flexible plastic sealing layer, and an ion fiber layer placed between the upper and lower electrode layers; the tear-resistant flexible plastic sealing layer wraps and seals the upper and lower electrode layers and the ion fiber layer.

2. The automobile collision dummy model contact distribution force information detection system according to claim 1, characterized in that: The tear-resistant flexible plastic sealing layer is made of at least one of a TPU film, a biaxially oriented polypropylene BOPP film, a polyvinylidene chloride PVDC film, an EVA film, and a PVA film.

3. The automobile collision dummy model contact distribution force information detection system according to claim 1, characterized in that: The dimensions of the flexible tactile sensors at different locations shall be based on the dimensions of the outer surfaces of the corresponding locations of the model dummy after curved surface unfolding.

4. The automobile collision dummy model contact distribution force information detection system according to claim 1, characterized in that: The system includes n flexible tactile sensors, n signal acquisition modules and an embedded computer platform. A flexible tactile sensor is arranged at one location, and one flexible tactile sensor is connected to one signal acquisition module. All signal acquisition modules communicate with the embedded computer platform. n is a natural number.

5. The automobile collision dummy model contact distribution force information detection system according to claim 4, characterized in that: The circuit board of the signal acquisition module includes a processor, a data output port, a column scanning unit, a row scanning unit and an excitation source. A plurality of longitudinal electrodes and transverse electrodes are arranged on the upper and lower electrode layers of the flexible tactile sensor, and a circuit connection end is led out at the edge thereof. The transverse electrodes and the longitudinal electrodes intersect vertically in space to form a plurality of intersections, and each intersection constitutes a capacitor unit; the circuit connection end is connected to a connection terminal, each connection terminal is respectively connected to a transfer interface of a corresponding size, the transfer interface is connected to a flexible flat cable of a corresponding size, and each flexible flat cable is inserted into a circuit input port of the circuit board connected to the corresponding signal acquisition module; The flexible flat cable is connected to the row scanning unit and the column scanning unit through the corresponding circuit input ports, the row scanning unit and the column scanning unit are connected to the processor input ports respectively, and the row and column scanning units have AD conversion functions; The data output port is used for data output and connection to a computer platform.

6. The automobile collision dummy model contact distribution force information detection system according to claim 1, characterized in that: The embedded computer platform has built-in SolidWorks software, Auto CAD software, LabVIEW software, Anaconda software, and VSCcode software; The detection system also has a display unit that can display a contact distribution force image. The display unit consists of three areas: a communication setting and communication status display area, a tactile signal display area, and an information display area. The information display area has a collection, filtering, and recognition result display box.

7. The automobile collision dummy model contact distribution force information detection system according to claim 1, characterized in that: The chest cavity of the model dummy is made of steel, the shoulder blade is made of aluminum, and the pelvis is made of plastic. The flexible tactile sensor is covered on the surface of the model dummy, and the overall thickness of the flexible tactile sensor is 1-3 mm.

8. The automobile collision dummy model contact distribution force information detection system according to claim 1, characterized in that: The model dummy is an adult mannequin, a female mannequin or a child mannequin; The adult human model has three specifications: 50% human model, medium stature with a height of 1.77 meters and a weight of 86 kilograms; 95% human model, large stature with a height of 1.88 meters and a weight of 108 kilograms; 5% human model, short stature with a height of 1.48 meters and a weight of 56 kilograms; The female model is: an Asian standard adult female model, 1.62 meters tall and weighing 62 kilograms; There are six specifications of child mannequins: 6-month mannequin, height 67 cm, weight 10 kg; 12-month mannequin, height 76 cm, weight 13 kg; 18-month mannequin, height 83 cm, weight 16 kg; 3-year-old mannequin, height 97 cm, weight 20 kg; 6-year-old mannequin, height 130 cm, weight 30 kg; 10-year-old mannequin, height 138 cm, weight 36 kg.

9. The automobile collision dummy model contact distribution force information detection system according to any one of claims 1 to 8, characterized in that: The flexible tactile sensor is covered on the model dummy in the form of clothing.

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