Vehicle safety performance improvement method and device and nonvolatile storage medium

Abstract

The application discloses a vehicle safety performance improvement method and device and a nonvolatile storage medium. The method comprises the following steps: in response to a control instruction of a target object, installing auxiliary tooling, system component and test dummy into a target test vehicle; determining a target test area in the target test vehicle, and generating a test marking line in the target test area; determining a target acceleration curve, and controlling the target test vehicle to simulate a real vehicle collision for testing according to the target acceleration curve; analyzing a target image and sensor data to obtain a safety performance evaluation result of the target test vehicle, and adjusting configuration parameters of the target test vehicle according to the safety performance evaluation result. The application solves the technical problem of low test efficiency caused by the unclear remote occupant protection safety performance test process of the vehicle and the confusion of the auxiliary tooling, and improves the test integrity, generality, convenience and practicability.

Description

Technical Field

[0001] This application relates to the field of automotive safety technology, and more specifically, to a method, device, and non-volatile storage medium for improving vehicle safety performance. Background Technology

[0002] With the continuous development of the automotive industry, the number of cars on the road is increasing year by year. People's demands for cars have gradually shifted towards safety, with greater emphasis on the vehicle's inherent safety, post-collision integrity, and protection of occupants. Side impacts are a type of traffic accident with a high frequency and a large number of injuries and fatalities. The risk of injury or death for occupants on the non-impact side (far side) is comparable to that for occupants on the impact side (near side). Previous research on side impact safety performance has focused primarily on occupants on the impact side, using structural optimization design and the configuration of side airbags and curtain airbags to reduce injuries to occupants on the near side. Research on far side impacts and safety measures designed for the protection of far occupants have been relatively limited. In 2020, the European New Car Assessment Program (Euro NCAP) officially incorporated a far occupant protection assessment procedure into its evaluation system, and the China New Car Assessment Program (C-NCAP) plans to include far occupant protection assessment in its evaluation system by 2025. The protection of far occupants has received widespread attention, and far occupant protection measures have become part of the safety performance development of various automakers.

[0003] Currently, the lack of a clear testing process for remote occupant protection safety performance and the disorganized auxiliary tooling have led to technical problems such as low testing efficiency.

[0004] There is currently no effective solution to the above problems.

[0005] Application content

[0006] This application provides a method, apparatus, and non-volatile storage medium for improving vehicle safety performance, which at least solves the technical problem of low testing efficiency caused by unclear testing procedures and chaotic auxiliary tooling in current vehicle remote occupant protection safety performance testing, thereby improving the completeness, versatility, convenience, and practicality of testing.

[0007] According to one aspect of the embodiments of this application, a method for improving vehicle safety performance is provided, comprising: responding to a control command of a target object, installing auxiliary fixtures, restraint system components, and a test dummy into a target test vehicle, wherein the auxiliary fixtures include: a modified body-in-white, a corner adapter plate, and a high-speed camera mounting bracket; the restraint system components include: an instrument panel, a sub-instrument panel, a center armrest, a seat, a seat belt, and an airbag; and various body parts of the test dummy include target sensors; determining a target test area in the target test vehicle, and generating test marking lines in the target test area, wherein the target test area contains the test dummy, and the test marking lines are used for collision... The test dummy in the target test vehicle provides a displacement reference; the target acceleration curve is determined, and the target test vehicle is controlled according to the target acceleration curve to simulate a real vehicle collision; the target images and sensor data are analyzed to obtain the safety performance evaluation results of the target test vehicle, and the configuration parameters of the target test vehicle are adjusted based on the safety performance evaluation results. The target images include images inside and outside the vehicle captured by a high-speed camera during the test, the sensor data is the data collected by the target sensors of the test dummy, the safety performance evaluation results are used to reflect the safety performance of the target test vehicle, and the configuration parameters include: constraint system parameters and safety performance configuration parameters.

[0008] Optionally, determining the target test area in the target test vehicle and generating test marking lines in the target test area includes: determining the seat area of ​​the target test vehicle away from the collision side in the event of a side collision as the target test area; generating mutually parallel test marking lines in the target test area, wherein the test marking lines include: the maximum intrusion line, the first head offset performance boundary line, the second head offset performance boundary line, the occupant contact boundary line, and the vehicle centerline.

[0009] Optionally, determining the target acceleration curve and controlling the target test vehicle to simulate a real-vehicle collision test according to the target acceleration curve includes: acquiring historical acceleration curves, wherein the historical acceleration curves are acceleration curves obtained in historical vehicle collision tests; determining the target acceleration curve based on the curve fitting degree and a preset fitting threshold range, wherein the target acceleration curve is the acceleration curve planned to be applied to the collision test of the target test vehicle, and the curve fitting degree is used to characterize the degree of fit between the target acceleration curve and the historical acceleration curve; and controlling the target test vehicle to simulate a real-vehicle side collision test according to the target acceleration curve.

[0010] Optionally, determining the target acceleration curve based on the curve fitting degree and a preset fitting threshold range includes: if the curve fitting degree does not meet the preset fitting threshold range, adjusting the candidate acceleration curve until the curve fitting degree meets the preset fitting threshold range, and determining the adjusted candidate acceleration curve as the target acceleration curve, wherein the candidate acceleration curve is an acceleration curve automatically generated by the system; if the curve fitting degree meets the preset fitting threshold range, determining the candidate acceleration curve as the target acceleration curve.

[0011] Optionally, controlling the target test vehicle to simulate a real vehicle side impact test according to the target acceleration curve also includes: adjusting the body angle of the target test vehicle through a cornering adapter plate to obtain the target test state of the target test vehicle; and controlling the target test vehicle in the target test state to simulate a real vehicle collision test according to the target acceleration curve.

[0012] Optionally, before controlling the target test vehicle to simulate a real vehicle side impact test according to the target acceleration curve, the test may also include: simulating the test using a target counterweight according to the target acceleration curve, wherein the mass of the target counterweight is the same as the mass of the target test vehicle; and detecting whether the curve fitting degree of the actual acceleration curve obtained after the collision meets the preset fitting threshold range.

[0013] Optionally, analyzing the target image and sensor data to obtain the safety performance evaluation result of the target test vehicle includes: determining the preset analysis rules; determining the displacement of the test dummy's head after the test in the target image based on the test marking lines; calculating the first score based on the displacement and the preset analysis rules; calculating the second score based on the sensor data and the preset analysis rules; and combining the first score and the second score to obtain the safety performance evaluation result of the target test vehicle.

[0014] According to another aspect of the embodiments of this application, a vehicle safety performance enhancement device is also provided, comprising: a vehicle configuration module, used to respond to control commands from a target object and install auxiliary fixtures, restraint system components, and a test dummy into a target test vehicle, wherein the auxiliary fixtures include: a modified body-in-white, a corner adapter plate, and a high-speed camera mounting bracket; the restraint system components include: an instrument panel, a sub-instrument panel, a center armrest, a seat, a seat belt, and an airbag; and various body parts of the test dummy include target sensors; and an area determination module, used to determine a target test area in the target test vehicle and generate test marking lines in the target test area, wherein the target test area contains a test dummy, and the test marking lines are used to indicate the impact point of the test dummy. The test dummy in the target test vehicle after the collision provides a displacement reference; the curve determination module is used to determine the target acceleration curve and control the target test vehicle to simulate a real vehicle collision according to the target acceleration curve; the analysis and adjustment module is used to analyze the target image and sensor data to obtain the safety performance evaluation result of the target test vehicle, and adjust the configuration parameters of the target test vehicle based on the safety performance evaluation result. The target image includes images inside and outside the vehicle captured by a high-speed camera during the test, the sensor data is the data collected by the target sensor of the test dummy, the safety performance evaluation result is used to reflect the safety performance of the target test vehicle, and the configuration parameters include: constraint system parameters and safety performance configuration parameters.

[0015] According to another aspect of the embodiments of this application, an electronic device is also provided, the electronic device including a processor, the processor being configured to run a program, wherein the program executes a method for improving vehicle safety performance during runtime.

[0016] According to another aspect of the embodiments of this application, a non-volatile storage medium is also provided, the non-volatile storage medium including a stored program, wherein, when the program is running, it controls the device where the non-volatile storage medium is located to execute a vehicle safety performance improvement method.

[0017] In this embodiment, a control command is invoked in response to the target object to install auxiliary fixtures, restraint system components, and a test dummy into the target test vehicle. The auxiliary fixtures include a modified body-in-white, a corner adapter plate, and a high-speed camera mounting bracket. The restraint system components include an instrument panel, a secondary instrument panel, a center armrest, a seat, seat belts, and airbags. Each body part of the test dummy contains target sensors. A target test area is determined within the target test vehicle, and test marking lines are generated within this area. The target test area contains the test dummy, and the test marking lines provide a displacement reference for the test dummy after a collision. A target acceleration curve is determined, and the target test vehicle is controlled according to the target acceleration curve to simulate a real-vehicle collision. The target image and sensor data are analyzed to obtain the target test vehicle... The safety performance evaluation results of the vehicle are used to adjust the configuration parameters of the target test vehicle. The target image includes images of the inside and outside of the vehicle captured by a high-speed camera during the test. The sensor data is the data collected by the target sensor of the test dummy. The safety performance evaluation results are used to reflect the safety performance of the target test vehicle. The configuration parameters include constraint system parameters and safety performance configuration parameters. By using an accelerated simulation trolley test system to conduct collision tests on the modified and adjusted body-in-white, the area is marked and the corresponding high-speed camera is installed to collect data for analysis and adjustment. This achieves the goal of improving the efficiency and quality of vehicle safety performance testing, and solves the technical problem of low testing efficiency caused by the unclear test process and chaotic auxiliary tooling of the current vehicle remote occupant protection safety performance test. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is a schematic diagram of a method for improving vehicle safety performance according to an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of a method flow for testing vehicle safety performance according to an embodiment of this application;

[0021] Figure 3a This is an isometric view of a corner adapter plate provided according to an embodiment of this application;

[0022] Figure 3b This is a front view of a corner adapter plate provided according to an embodiment of this application;

[0023] Figure 4aThis is an axonometric view of a camera bracket provided according to an embodiment of this application;

[0024] Figure 4b This is a front view of a camera bracket provided according to an embodiment of this application;

[0025] Figure 4c This is an exploded view of a camera bracket provided according to an embodiment of this application;

[0026] Figure 5 This is a schematic diagram of a vehicle safety performance enhancement device according to an embodiment of this application;

[0027] Figure 6 This is a hardware structure block diagram of a computer terminal (or electronic device) for improving vehicle safety performance according to an embodiment of this application. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0029] To facilitate a better understanding of the embodiments of this application by those skilled in the art, some technical terms or nouns involved in the embodiments of this application are explained as follows:

[0030] The B-pillar of a car is located between the front and rear seats, extending from the roof to the floor. It primarily supports the roof and front and rear doors, and houses components such as seatbelts and wiring. In the event of a side impact, the B-pillar also plays a role in protecting the occupants.

[0031] The C-pillar of a car is the pillar between the rear door and the rear windshield. Connecting the roof and body, the C-pillar absorbs some of the energy in the event of a collision, ensuring the safety of rear passengers.

[0032] Root Mean Square (RMS): The square root of the sum of the squares of N terms divided by N.

[0033] AE-MDB test: is an important type of crash test in Euro-NCAP.

[0034] The WorldSID 50th Mannequin is based on statistical data on human anatomy worldwide and is a globally recognized side-impact dummy.

[0035] H-point (Hip Point): In a two-dimensional or three-dimensional human body model template, this refers to the point where the torso and thigh connect, i.e., the hip point. In the human body template, it represents the hip joint. It indicates the position of the midpoint of the driver's hip joint within the car after the driver is seated.

[0036] HPM (H-Point Machine) device: It is a physical device defined by SAE (Society of Automotive Engineers) for establishing and measuring key reference points and dimensions of automobiles, and is widely used in automobile design worldwide.

[0037] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0038] Example 1

[0039] According to an embodiment of this application, a method embodiment for improving vehicle safety performance is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0040] Figure 1 This is a schematic diagram of a method for improving vehicle safety performance according to an embodiment of this application, as shown below. Figure 1 As shown, the method includes the following steps:

[0041] Step S102: In response to the control command of the target object, install auxiliary tooling, restraint system components and test dummy into the target test vehicle. The auxiliary tooling includes: modified body-in-white, corner adapter plate and high-speed camera mounting bracket. The restraint system components include: instrument panel, sub-instrument panel, center armrest, seat, seat belt and airbag. Each body part of the test dummy contains target sensors.

[0042] In this embodiment, the target test vehicle is a white body, and the test dummy is a WorldSID 50th male dummy.

[0043] In this embodiment, the test dummy contains multiple sensors that can be used to collect data including head acceleration, angular velocity, neck force and torque, and shoulder force.

[0044] Step S104: Determine the target test area in the target test vehicle and generate test marking lines in the target test area. The target test area contains a test dummy, and the test marking lines are used to provide a displacement reference for the test dummy in the target test vehicle after the collision.

[0045] In some embodiments of this application, determining the target test area in the target test vehicle and generating test marking lines in the target test area includes: determining the seat area of ​​the target test vehicle away from the collision side in the event of a side collision as the target test area; generating mutually parallel test marking lines in the target test area, wherein the test marking lines include: the maximum intrusion line, the first head offset performance boundary line, the second head offset performance boundary line, the occupant contact boundary line, and the vehicle centerline.

[0046] In this embodiment, the target test area is the area where the occupant on the non-impact side is located when the vehicle is involved in a collision. The test marking lines are drawn with distinct colors to facilitate effective and clear evaluation of the test results.

[0047] Specifically, five vertical parallel offset lines are generated on the white body: the maximum intrusion line (red), the head offset performance boundary line (orange) (i.e. the first head offset performance boundary line mentioned above), the head offset performance boundary line (yellow) (i.e. the second head offset performance boundary line mentioned above), the occupant contact boundary line (green), and the vehicle center line (blue). The five lines need to extend to the front seats, the roof, the dashboard, and the grid line located behind the white body.

[0048] In addition, the target test area mentioned above can be adjusted according to actual needs. For example, the target test area can be limited according to the different positions where the occupants may appear.

[0049] Step S106: Determine the target acceleration curve, and control the target test vehicle to simulate a real vehicle collision according to the target acceleration curve;

[0050] In some embodiments of this application, determining the target acceleration curve and controlling the target test vehicle to simulate a real-vehicle collision test according to the target acceleration curve includes: acquiring historical acceleration curves, wherein the historical acceleration curves are acceleration curves obtained in historical vehicle collision tests; determining the target acceleration curve based on the curve fitting degree and a preset fitting threshold range, wherein the target acceleration curve is the acceleration curve planned to be applied to the collision test of the target test vehicle, and the curve fitting degree is used to characterize the degree of fitting between the target acceleration curve and the historical acceleration curve; and controlling the target test vehicle to simulate a real-vehicle side collision test according to the target acceleration curve.

[0051] In this embodiment, the target test vehicle is tested according to the target acceleration curve using a simulated trolley device.

[0052] In some embodiments of this application, determining the target acceleration curve based on the curve fitting degree and a preset fitting threshold range includes: if the curve fitting degree does not meet the preset fitting threshold range, adjusting the candidate acceleration curve until the curve fitting degree meets the preset fitting threshold range, and determining the adjusted candidate acceleration curve as the target acceleration curve, wherein the candidate acceleration curve is an acceleration curve automatically generated by the system; if the curve fitting degree meets the preset fitting threshold range, determining the candidate acceleration curve as the target acceleration curve.

[0053] Specifically, the acceleration curves obtained from the whole vehicle test (i.e., the historical acceleration curves mentioned above) are selected, and then a candidate acceleration curve is generated using waveform editing software in the simulated trolley test system for adjustment. After editing and simulation, the RMS and curve fitting degree are checked and confirmed until the modified waveform curve achieves the optimal solution for test accuracy within the allowable range of the equipment.

[0054] By continuously adjusting the acceleration curve through the simulated trolley test system, the acceleration curve of the test target can be well fitted, ensuring the accuracy and repeatability of the remote protection simulated trolley test and guaranteeing the consistency of each test.

[0055] To test the safety performance of vehicles under different collision angles, the test of simulating a real vehicle side collision by controlling the target test vehicle according to the target acceleration curve also includes: adjusting the body angle of the target test vehicle through a cornering plate to obtain the target test state of the target test vehicle; and simulating a real vehicle collision by controlling the target test vehicle in the target test state according to the target acceleration curve.

[0056] Specifically, Figure 3a This is an isometric view of a corner adapter plate provided according to an embodiment of this application. Figure 3bThis is a front view of a corner adapter plate according to an embodiment of this application. The specific structure of the corner adapter plate is as follows: Figure 3a , Figure 3b As shown, the rotating platform is used to fix the target test vehicle on the trolley equipment platform and can adjust the fixed angle of the target test vehicle in the simulated collision test.

[0057] The angle adapter plate enables installation and connection while meeting the angle requirements of different development needs for the body-in-white. The angle adapter plate is accurately positioned and easy to disassemble. Its design facilitates replacement, saving replacement time and optimizing testing efficiency.

[0058] In some embodiments of this application, before controlling the target test vehicle to simulate a real vehicle side collision test according to the target acceleration curve, the method further includes: simulating the test using a target counterweight according to the target acceleration curve, wherein the mass of the target counterweight is the same as the mass of the target test vehicle; and detecting whether the curve fitting degree of the actual acceleration curve obtained after the collision meets the preset fitting threshold range.

[0059] Specifically, a dry run is performed to bring the hydraulic oil in the simulated trolley to the ideal test temperature. A counterweight of equal mass to the pre-reinforced body-in-white is installed on the trolley platform. The pre-adjusted waveform is input to the simulated trolley, and test runs are conducted through 3 to 5 iterations. Simultaneously, the results of these iterations are extracted, and the curve (i.e., the actual acceleration curve) and RMS value range are checked to ensure they meet the requirements.

[0060] Step S108: Analyze the target image and sensor data to obtain the safety performance evaluation result of the target test vehicle, and adjust the configuration parameters of the target test vehicle based on the safety performance evaluation result. The target image includes images inside and outside the vehicle captured by a high-speed camera during the test of the target test vehicle. The sensor data is the data collected by the target sensor of the test dummy. The safety performance evaluation result is used to reflect the safety performance of the target test vehicle. The configuration parameters include: constraint system parameters and safety performance configuration parameters.

[0061] In some embodiments of this application, analyzing target images and sensor data to obtain the safety performance evaluation result of the target test vehicle includes: determining preset analysis rules; determining the displacement offset of the test dummy's head after the test in the target image based on the test marking lines; calculating a first score based on the displacement offset and preset analysis rules; calculating a second score based on the sensor data and preset analysis rules; and combining the first score and the second score to obtain the safety performance evaluation result of the target test vehicle.

[0062] In this embodiment, multiple high-speed cameras are deployed in the interior and exterior environment of the vehicle body to acquire the target image. The high-speed cameras are fixed by a fixed bracket. Figure 4a This is an axonometric view of a camera bracket provided according to an embodiment of this application. Figure 4b This is a front view of a camera bracket provided according to an embodiment of this application. The specific structure of the high-speed camera mounting bracket is as follows: Figure 4a , Figure 4b As shown.

[0063] Figure 4c This is an exploded view of a camera bracket according to an embodiment of this application. The high-speed camera mounting bracket is detachable and can be selected for use according to actual conditions, such as... Figure 4c As shown, the bracket is designed as a universal detachable type, which can be selected and installed according to the actual test conditions; at the same time, the bracket is designed with a simple bolt connection method, and quick installation can be achieved by reinforcing the corresponding installation position on the test vehicle body.

[0064] Specifically, when recording the test video (i.e. the target image mentioned above), the test dummy and test area are filmed from multiple angles and in all directions, which can cover a variety of R&D needs and allow for a better observation of the overall test situation, facilitating subsequent analysis and improvement.

[0065] The method for improving vehicle safety performance in steps S102 to S108 of the embodiments of this application will be further described below.

[0066] Figure 2 This is a schematic diagram of a method flow for testing vehicle safety performance according to an embodiment of this application, as shown below. Figure 2 As shown, the method includes the following steps:

[0067] Step 1: Modification and reinforcement of the body-in-white and design and fabrication of auxiliary tooling;

[0068] Specifically, the overall frame of the body-in-white is first reinforced with a wrapping treatment. Then, the front bulkhead and the rear part of the C-pillar that are not needed for the simulated trolley test are cut off. Finally, the remaining parts are reinforced, including the bolt mounting holes on the seat base, the seat belt height adjustment fixing holes, and the windshield, to meet the needs of multiple tests and quick replacement.

[0069] Specifically, auxiliary tooling is designed according to the requirements of remote occupant testing, design drawings are obtained, and machining is carried out using CNC machining centers and other machining equipment based on the design drawings.

[0070] Step 2, Acceleration curve selection and adjustment;

[0071] Specifically, the acceleration curves obtained from the whole vehicle test (i.e. the historical acceleration curves mentioned above) are selected, and then the waveform editing software in the simulated trolley test system is used for adjustment. After editing and simulation, the RMS and curve fitting degree are checked and confirmed until the modified waveform curve achieves the optimal solution for test accuracy within the allowable range of the equipment.

[0072] Step 3: Perform a curve test;

[0073] Specifically, a dry run is performed to bring the hydraulic oil in the simulated trolley to the ideal test temperature. A counterweight of equal mass to the pre-reinforced body-in-white is installed on the trolley platform. The pre-adjusted waveform is input to the simulated trolley, and test runs are conducted through 3 to 5 iterations. Simultaneously, the results of these iterations are extracted, and the curve (i.e., the actual acceleration curve) and RMS value range are checked to ensure they meet the requirements.

[0074] Step 4: Installation of parts and auxiliary tooling;

[0075] Specifically, in response to the target object's operation, install the front seats, complete center console assembly (interior trim, handbrake assembly, gearshift assembly, storage compartment), complete instrument panel assembly (instrument panel, steering column, steering wheel; entertainment system can be omitted if appropriate), seat belts, airbags, and other components. Fill the space between the impact side (B-pillar or other structure) and the passenger seat, and between the passenger seat and the center console area with pads that can achieve the required rigidity. Remove the counterweights previously used for waveform testing on the trolley equipment platform, and then install the corner adapter plate for remote protection testing on the trolley equipment platform.

[0076] Step 5: Mark the evaluation area (i.e., the target test area);

[0077] Specifically, the target test area in the body-in-white is determined and marked lines are generated. First, a 50*50mm grid line is marked on the back of the body-in-white. It is important to note that the grid line should not connect to the front seats to avoid interference during the test. Second, five vertical parallel offset lines need to be generated on the body-in-white: the maximum intrusion line (red), the head offset performance boundary line (orange), the head offset performance boundary line (yellow), the occupant contact boundary line (green), and the vehicle centerline (blue). These five lines need to extend to the front seats, roof, dashboard, and the rear grid line.

[0078] In this embodiment, the maximum intrusion line (red) is used to characterize the maximum amount of the inner door panel; the head offset performance boundary line (orange) is located at the center line of the seat on the non-collision side; the head offset performance boundary line (yellow) is located 125mm inward from the center line of the seat on the non-collision side; and the occupant contact boundary line (green) is located 250mm inward from the center line of the seat on the non-collision side.

[0079] Step 6, secure the body-in-white;

[0080] Specifically, in response to the operation of the target object, the body-in-white and the corner adapter plate already installed on the trolley equipment platform are installed and fixed, maintaining the angle between the body-in-white and the trolley track travel direction at 75°±3°.

[0081] Step 7, component adjustment;

[0082] Specifically, adjustments are made to the passenger compartment. According to the AE-MDB test procedures, adjustments are made to the seat position (20mm rearward from the midpoint), center console armrest (positioned to limit interaction with the dummy and maximize lateral offset), central tunnel (maintaining integrity and consistency with the vehicle's overall installation configuration), parking brake (set to the inactive position), and gear position (D (drive) or other usable gear).

[0083] Step 8: Installation, positioning, and adjustment of the dummy;

[0084] Specifically, in response to the target object's operation, the dummy is installed and adjusted.

[0085] In this embodiment, the WorldSID 50th male dummy is placed on the far occupant side (driver's side, non-collision side). The dummy has a half-arm structure on both sides and wears a sleeveless suit or a sleeved suit with the sleeves removed. At the same time, different colors and corresponding sizes are applied to the dummy's head, shoulders, ribs, and pelvis. The dummy's installation and positioning must ensure that the H-point is 20mm forward of the H-point confirmed by HPM, the chest angle sensor displays -2°±1°, and the top of the head angle is 0°±1°, etc. After the dummy is installed, positioned, and adjusted, the relevant positional parameters of the dummy need to be measured, such as the distance from the chin to the junction of the windshield, the distance from the chin to the center of the steering wheel, and the distance from the H-point to the inside of the door frame, etc.

[0086] Step 9: Installation and debugging of other equipment;

[0087] Specifically, a data acquisition system is fixed on the platform of the trolley equipment, and a dummy sensor is connected to the data acquisition system;

[0088] In this embodiment, corresponding high-speed camera brackets and motion image acquisition systems are fixed on camera brackets on both sides of the trolley equipment, on the roof of the white body, and on the front of the windshield of the white body. The motion acquisition system covers the target marking line position in step 5. After all the equipment is installed, signal debugging is performed to monitor whether the signal is normal in order to ensure the integrity of the data collected in the subsequent formal test.

[0089] Step 10: Pre-experiment checks and photo capture;

[0090] Specifically, before the crash test begins, the condition of various areas inside and outside the body-in-white is monitored. The condition of each area to be monitored includes, but is not limited to, the following aspects: the reliability of the fixation between the body-in-white and the corner transition plate, the reliability of the fixation between the corner transition plate and the body-in-white, the reliability of the fixation of the data acquisition equipment and motion image acquisition system, the accuracy of the dummy's position, and the completeness of the installation of the required parts of the body-in-white. The photographs should cover the trolley setup, the body-in-white structure, the connection between the trolley and the body-in-white, the steering column, the instrument panel / center console mounting parts, and the body reinforcement parts.

[0091] Step 11: Conduct the experiment;

[0092] Specifically, monitor whether there are any scattered tools, bolts, missing parts, etc. on the monitoring trolley equipment platform and inside the body-in-white, and whether there are any personnel in the test area, and turn on the test area light strip to indicate; check whether the status of the simulated trolley test system is normal, and conduct the test according to the target acceleration curve if there is no alarm information.

[0093] Step 12, Post-test inspection and photographic collection;

[0094] Specifically, after the crash test, the condition of each area inside and outside the body-in-white is monitored, and images are collected of the parts or body-in-white structures that are determined to have failed after the test. The condition of each area to be monitored includes, but is not limited to, the following aspects: whether the fastening bolts are loose, whether the reinforcement welding areas of the body-in-white are in failure, whether the data and images are collected, and whether the parts are damaged or failed. The acquisition parameters when taking pictures should be consistent with the acquisition parameters when taking pictures before the test.

[0095] Step 13: Data download and storage.

[0096] Specifically, the test data from the simulated trolley test system, data acquisition system, and motion image acquisition system are acquired, converted into the required target format, named according to rules, and stored uniformly for subsequent result analysis and data retention.

[0097] The vehicle safety performance testing method provided in this application has good versatility, can meet the requirements of various evaluation systems, and is repeatable. It uses an accelerated simulation trolley test system, which has high accuracy in reproducing test waveforms, can ensure consistency of multiple tests, guarantee the accuracy of test results, and reduce influencing factors.

[0098] In this embodiment, after obtaining the test data, the safety performance of the target test vehicle can be evaluated by analyzing the data obtained after the test. For example, the head offset limit of the dummy can be analyzed by combining high-speed camera video and test marking lines, and the damage to various body parts of the dummy can be analyzed by collecting acceleration data and pressure data of various body parts of the dummy through sensors. The safety performance can be evaluated by combining the conclusions of various analyses.

[0099] In this embodiment, based on the safety performance score, the configuration parameters of the target test vehicle can be adjusted to improve the safety performance of the target test vehicle. The adjustment of the configuration parameters of the target test vehicle includes, but is not limited to: adjusting the tightness of the seat belts, adjusting the height of the center console in the vehicle, and adjusting the position and pressure parameters of the airbags.

[0100] Through the above steps, the modified and adjusted body-in-white was subjected to a collision test using an accelerated simulation trolley test system. The area was marked and a corresponding high-speed camera was installed to collect data for analysis and adjustment. This achieved the goal of improving the efficiency and quality of vehicle safety performance testing, and thus solved the technical problem of low testing efficiency caused by the unclear testing process and chaotic auxiliary tooling of the current vehicle remote occupant protection safety performance test.

[0101] Example 2

[0102] According to an embodiment of this application, an embodiment of a vehicle safety performance enhancement device is also provided. Figure 5 This is a schematic diagram of a vehicle safety performance enhancement device according to an embodiment of this application. Figure 5 As shown, the device includes:

[0103] The vehicle configuration module 80 is used to respond to the control commands of the target object and install auxiliary tooling, restraint system components and test dummies into the target test vehicle. The auxiliary tooling includes: modified body-in-white, corner adapter plate and high-speed camera mounting bracket. The restraint system components include: instrument panel, sub-instrument panel, center armrest, seat, seat belt and airbag. The test dummies contain target sensors in various body parts.

[0104] The area determination module 82 is used to determine the target test area in the target test vehicle and generate test marking lines in the target test area. The target test area contains a test dummy, and the test marking lines are used to provide a displacement reference for the test dummy in the target test vehicle after the collision.

[0105] The curve determination module 84 is used to determine the target acceleration curve and control the target test vehicle to simulate a real vehicle collision test according to the target acceleration curve;

[0106] The analysis and adjustment module 86 is used to analyze the target image and sensor data to obtain the safety performance evaluation result of the target test vehicle, and adjust the configuration parameters of the target test vehicle based on the safety performance evaluation result. The target image includes images inside and outside the vehicle captured by a high-speed camera during the test of the target test vehicle. The sensor data is the data collected by the target sensor of the test dummy. The safety performance evaluation result is used to reflect the safety performance of the target test vehicle. The configuration parameters include: constraint system parameters and safety performance configuration parameters.

[0107] It should be noted that the vehicle safety performance enhancement device provided in this embodiment can be used to perform... Figure 1 The vehicle safety performance improvement method shown above is also applicable to the embodiments of this application, and will not be repeated here.

[0108] According to an embodiment of this application, an embodiment of a computer terminal for implementing a method to improve vehicle safety performance is also provided. Figure 6 This is a hardware structure block diagram of a computer terminal (or electronic device) for improving vehicle safety performance, according to an embodiment of this application. Figure 6 As shown, a computer terminal 90 (or electronic device 90) may include one or more processors (shown as 902a, 902b, ..., 902n in the figure) (the processor may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.), a memory 904 for storing data, and a transmission module 906 for communication functions. In addition, it may also include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the I / O interface), a network interface, a power supply, and / or a camera. Those skilled in the art will understand that... Figure 6 The structure shown is for illustrative purposes only and does not limit the structure of the aforementioned electronic device. For example, the computer terminal 90 may also include... Figure 6 The more or fewer components shown, or having the same Figure 6 The different configurations shown.

[0109] It should be noted that the aforementioned one or more processors and / or other data processing circuits are generally referred to herein as "data processing circuits". These data processing circuits can be implemented wholly or partially as software, hardware, firmware, or any other combination. Furthermore, the data processing circuits can be a single, independent processing module, or wholly or partially integrated into any other element within the computer terminal 90 (or electronic device). As involved in the embodiments of this application, the data processing circuit serves as a processor control mechanism (e.g., selection of a variable resistor termination path connected to an interface).

[0110] The memory 904 can be used to store software programs and modules of application software, such as the program instructions / data storage device corresponding to the vehicle safety performance improvement method in this embodiment. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory 904, thereby realizing the aforementioned vehicle safety performance improvement method. The memory 904 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 904 may further include memory remotely located relative to the processor, and these remote memories can be connected to the computer terminal 90 via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0111] The transmission module 906 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by the communication provider of the computer terminal 90. In one example, the transmission device 906 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 906 may be a Radio Frequency (RF) module, used for wireless communication with the Internet.

[0112] The display can be, for example, a touchscreen liquid crystal display (LCD), which allows the user to interact with the user interface of a computer terminal 90 (or electronic device).

[0113] It should be noted here that, in some optional embodiments, the above... Figure 6 The computer device (or electronic device) shown may include hardware elements (including circuitry), software elements (including computer code stored on a computer-readable medium), or a combination of both hardware and software elements. It should be noted that... Figure 6 This is only one instance of a particular specific instance, and is intended to illustrate the types of components that may exist in the aforementioned computer equipment (or electronic equipment).

[0114] It should be noted that, Figure 6 The electronic devices shown that enhance vehicle safety performance are used to perform Figure 1 The method for improving vehicle safety performance shown above also applies to the electronic equipment for improving vehicle safety performance, and will not be repeated here.

[0115] According to an embodiment of this application, an embodiment of a non-volatile storage medium is also provided. This non-volatile storage medium includes a stored program, wherein, during program execution, the device containing the non-volatile storage medium executes a vehicle safety performance enhancement method: responding to control commands from a target object, installing auxiliary fixtures, restraint system components, and a test dummy into the target test vehicle. The auxiliary fixtures include: a modified body-in-white, a corner adapter plate, and a high-speed camera mounting bracket. The restraint system components include: an instrument panel, a sub-instrument panel, a center armrest, a seat, a seatbelt, and an airbag. Each body part of the test dummy includes a target sensor. A target test area is determined in the target test vehicle, and test marking lines are generated within the target test area. The test area includes a test dummy, and test marking lines provide a displacement reference for the dummy in the target test vehicle after a collision. A target acceleration curve is determined, and the target test vehicle is controlled according to this curve to simulate a real-vehicle collision. Target images and sensor data are analyzed to obtain a safety performance evaluation result for the target test vehicle. Based on this evaluation result, the configuration parameters of the target test vehicle are adjusted. The target images include images of the vehicle's interior and exterior captured by a high-speed camera during the test. The sensor data consists of data collected by the target sensors on the test dummy. The safety performance evaluation result reflects the safety performance of the target test vehicle. The configuration parameters include constraint system parameters and safety performance configuration parameters.

[0116] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0117] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0118] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0119] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0120] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0121] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0122] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A method for improving vehicle safety performance, characterized in that, include: In response to the control commands of the target object, auxiliary tooling, restraint system components and test dummies are installed into the target test vehicle. The auxiliary tooling includes: a modified body-in-white, a corner adapter plate and a high-speed camera mounting bracket. The restraint system components include: an instrument panel, a sub-instrument panel, a center armrest, a seat, a seat belt and an airbag. Each body part of the test dummy contains target sensors. A target test area is determined in the target test vehicle, and a test marking line is generated in the target test area, wherein the target test area contains the test dummy, and the test marking line is used to provide a displacement reference for the test dummy in the target test vehicle after a collision; Obtain historical acceleration curves, wherein the historical acceleration curves are acceleration curves obtained in historical vehicle crash tests; If the curve fitting degree does not meet the preset fitting threshold range, the candidate acceleration curve is adjusted until the curve fitting degree meets the preset fitting threshold range, and the adjusted candidate acceleration curve is determined as the target acceleration curve. The candidate acceleration curve is an acceleration curve automatically generated by the system, and the target acceleration curve is the acceleration curve planned to be applied to the crash test of the target test vehicle. The curve fitting degree is used to characterize the degree of fit between the target acceleration curve and the historical acceleration curve. If the curve fitting degree meets the preset fitting threshold range, the candidate acceleration curve is determined as the target acceleration curve; Controlling the target test vehicle to simulate a real vehicle side impact test according to the target acceleration curve includes adjusting the body angle of the target test vehicle through the cornering transition plate to obtain the target test state of the target test vehicle; and controlling the target test vehicle in the target test state to simulate a real vehicle collision test according to the target acceleration curve. Before controlling the target test vehicle to simulate a real vehicle side impact test according to the target acceleration curve, the method further includes: simulating the test using a target counterweight according to the target acceleration curve, wherein the mass of the target counterweight is the same as the mass of the target test vehicle; and detecting whether the curve fitting degree of the actual acceleration curve obtained after the collision meets the preset fitting threshold range. Define the preset analysis rules; Based on the test marking lines, determine the displacement of the test dummy's head in the target image after the target test vehicle test, wherein the target image includes images inside and outside the vehicle captured by a high-speed camera during the target test vehicle test; The first score is obtained by calculating based on the displacement offset and the preset analysis rules; A second score is obtained by calculating based on sensor data and the preset analysis rules, wherein the sensor data is the data collected by the target sensor of the test dummy; The safety performance evaluation result of the target test vehicle is obtained by combining the first score and the second score, wherein the safety performance evaluation result is used to reflect the safety performance of the target test vehicle. Based on the safety performance evaluation results, the configuration parameters of the target test vehicle are adjusted, wherein the configuration parameters include: constraint system parameters and safety performance configuration parameters.

2. The method for improving vehicle safety performance according to claim 1, characterized in that, Determining the target test area in the target test vehicle and generating test marker lines within the target test area includes: The target test area is defined as the seating area of ​​the target test vehicle located away from the side of the collision when a side collision occurs. Parallel test marking lines are generated in the target test area, wherein the test marking lines include: the maximum intrusion line, the first head offset performance boundary line, the second head offset performance boundary line, the occupant contact boundary line, and the vehicle centerline.

3. A vehicle safety performance testing device, characterized in that, include: The vehicle configuration module is used to respond to the control commands of the target object and install auxiliary tooling, restraint system components and test dummies into the target test vehicle. The auxiliary tooling includes: a modified body-in-white, a corner adapter plate and a high-speed camera mounting bracket. The restraint system components include: an instrument panel, a sub-instrument panel, a center armrest, a seat, a seat belt and an airbag. Each body part of the test dummy contains target sensors. The area determination module is used to determine the target test area in the target test vehicle and generate test marking lines in the target test area, wherein the target test area contains the test dummy, and the test marking lines are used to provide a displacement reference for the test dummy in the target test vehicle after a collision; A curve determination module is used to acquire historical acceleration curves, wherein the historical acceleration curves are acceleration curves obtained in historical vehicle crash tests; if the curve fitting degree does not meet a preset fitting threshold range, the module adjusts the candidate acceleration curves until the curve fitting degree meets the preset fitting threshold range, and determines the adjusted candidate acceleration curve as the target acceleration curve, wherein the candidate acceleration curve is an acceleration curve automatically generated by the system, and the target acceleration curve is the acceleration curve planned to be applied to the crash test of the target test vehicle, and the curve fitting degree is used to characterize the degree of fit between the target acceleration curve and the historical acceleration curve; if the curve fitting degree meets the preset fitting threshold range, the module determines the candidate acceleration curve as the target acceleration curve; controlling the target test vehicle to simulate a real vehicle side impact test according to the target acceleration curve includes adjusting the body angle of the target test vehicle through the corner transition plate to obtain the target test state of the target test vehicle; and controlling the target test vehicle in the target test state to simulate a real vehicle crash test according to the target acceleration curve. Before controlling the target test vehicle to simulate a real vehicle side impact test according to the target acceleration curve, the device is further used to simulate the test using a target counterweight according to the target acceleration curve, wherein the mass of the target counterweight is the same as the mass of the target test vehicle; and to detect whether the curve fitting degree of the actual acceleration curve obtained after the collision meets the preset fitting threshold range. The analysis and adjustment module is used to determine the preset analysis rules; Based on the test marking lines, the displacement of the test dummy's head after the target test vehicle test in the target image is determined, wherein the target image includes images of the inside and outside of the vehicle captured by a high-speed camera during the target test vehicle test; a first score is obtained by calculating based on the displacement and the preset analysis rules; a second score is obtained by calculating based on sensor data and the preset analysis rules, wherein the sensor data is the data collected by the target sensor of the test dummy; the first score and the second score are combined to obtain the safety performance evaluation result of the target test vehicle, wherein the safety performance evaluation result is used to reflect the safety performance of the target test vehicle; based on the safety performance evaluation result, the configuration parameters of the target test vehicle are adjusted, wherein the configuration parameters include: constraint system parameters and safety performance configuration parameters.

4. An electronic device, the electronic device comprising a processor, characterized in that, The processor is used to run a program, wherein the program executes the vehicle safety performance improvement method according to any one of claims 1 to 2.

5. A non-volatile storage medium, characterized in that, The non-volatile storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the non-volatile storage medium to execute the vehicle safety performance improvement method according to any one of claims 1 to 2.

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