A method for testing the safety of a front passenger seat based on vehicle lateral collision

Abstract

The present application relates to a kind of based on vehicle lateral collision copilot safety test method, comprising the following steps: arranging copilot safety test sliding table, adjusting the position of main driver seat and the position of copilot seat on sliding table, make the distance between the main driver seat position and automobile console be less than the distance between the copilot seat position and automobile console;Adjust the lateral collision angle and lateral collision acceleration of the sliding table, simulate lateral collision in-car environment to carry out copilot safety test, to obtain the collision test information of dummy on copilot seat;The collision test information of dummy on copilot seat is handled, and the safety of copilot is evaluated according to the processing result.The present application adjusts the position of main driver seat and the position of copilot seat on sliding table, so that the built scene is more close to real scene;Meanwhile, according to the collision angle and acceleration of real historical lateral collision accident data adjustment sliding table, test information is more real and reliable.

Description

Technical Field

[0001] This invention relates to the field of vehicle safety, and more specifically to a passenger seat safety testing method based on a side collision of a vehicle. Background Technology

[0002] In side-impact accidents, secondary collisions refer to further collisions between the occupants and other hard components inside the vehicle (driver's seat, center console, doors, etc.) after the vehicle has suffered its first side impact, due to deformation of the vehicle structure, the inertial motion of the occupants, or other factors. Such secondary collisions may exacerbate the injuries to the occupants.

[0003] With the increasing number of female drivers, it is becoming more common in real-world driving scenarios for women to drive and men to sit in the front passenger seat. However, due to the size differences between male and female passengers, there is a significant difference in the fore-and-aft distance between the driver's and front passenger seats. In the event of a side collision, this misalignment could cause the male passenger in the front passenger seat to strike the side of the driver's seat during the impact, potentially leading to head injuries.

[0004] Currently, traditional vehicle safety testing methods fail to fully consider the impact of the above situations on safety, resulting in discrepancies between test results and actual accident situations. At the same time, this leads to a lack of scientific testing and evaluation methods for automakers when developing relevant protective measures to address this phenomenon. Summary of the Invention

[0005] The purpose of this invention is to provide a passenger seat safety test method based on vehicle side collision, in order to solve the problem that traditional vehicle safety test methods fail to fully consider the impact of the distance difference between the female driver and the male passenger in the front and rear positions on safety, resulting in deviations between the test results and actual accident situations.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A passenger seat safety testing method based on vehicle side collision includes the following steps:

[0008] S1: Set up a passenger seat safety test slide, and adjust the positions of the driver's seat and the passenger seat on the slide so that the distance between the driver's seat and the vehicle's dashboard is less than the distance between the passenger seat and the vehicle's dashboard.

[0009] S2: Adjust the lateral collision angle and lateral collision acceleration of the slide to simulate the lateral collision in-vehicle environment and conduct a passenger seat safety test to obtain the collision test information of the dummy in the passenger seat;

[0010] S3: Process the crash test information of the dummy in the front passenger seat and evaluate the safety of the front passenger seat based on the processing results.

[0011] By adjusting the positions of the driver's seat and the passenger seat on the slide, the distance between the driver's seat and the car's dashboard is made smaller than the distance between the passenger seat and the dashboard. This makes the constructed scenario more realistic and consistent with the practical application of female drivers and male passengers in the front passenger seat. Consequently, the side collision safety test results are more accurate, which helps automakers develop relevant protective measures to address this phenomenon and improve vehicle driving safety.

[0012] This invention uses real vehicle side collision data to simulate the in-vehicle environment. Specifically, it adjusts the side collision angle and side collision acceleration of the slide based on the vehicle angle and acceleration of a real side collision, thereby making the in-vehicle environment of the passenger seat safety test slide closer to the real application scenario and helping to improve the authenticity and reliability of the test results.

[0013] Furthermore, this also includes: conducting real vehicle side-impact tests in advance to obtain the real-time collision acceleration of the real side-impact test.

[0014] Based on the aforementioned technical means, this invention conducts a real vehicle side-impact test before performing the passenger-side side-impact safety test, obtaining the real-time collision acceleration of the actual side-impact test. Compared to using a real vehicle for passenger-side side-impact safety testing, using a slide table for simulation can significantly reduce the economic and time costs of testing. By adjusting the parameters of the slide table, the test can be repeated under controlled conditions, reducing random errors and improving the consistency and repeatability of the test. Simultaneously, this invention simulates the in-vehicle environment of a side-impact collision for passenger-side safety testing, making the scenario more closely resemble a real-world scenario.

[0015] Furthermore, the real-time collision acceleration of the actual side-impact test is obtained through the following steps:

[0016] Real-time acceleration data is collected during the vehicle side-impact test, and noise filtering and smoothing are performed on the real-time acceleration data. Dynamic acceleration feature data is extracted, which is the real-time collision acceleration of the actual side-impact test.

[0017] Based on the aforementioned technical means, this invention performs noise filtering and smoothing on real-time acceleration data, effectively removing noise and errors from the waveform data and improving the purity and accuracy of the data. Simultaneously, this invention extracts key acceleration values ​​through precise acceleration data analysis and feature extraction, reducing the number of physical experiments to some extent.

[0018] Furthermore, in step S2, the lateral collision acceleration is adjusted based on the real-time collision acceleration of the actual side-impact test.

[0019] Based on the above technical means, the present invention uses the real-time collision acceleration of a real side impact test as the basis for adjustment, which can ensure that the acceleration impact experienced by the vehicle during the test is similar to that of a real collision, and helps to more accurately simulate the dynamic behavior during the collision process.

[0020] Furthermore, the lateral collision angle is adjusted based on the collision angles of historical vehicle side collision accidents.

[0021] Based on the above-mentioned technical means, the present invention adjusts the side collision angle to match the angle of historical side collision accidents, which can ensure that the test conditions are closer to the collision scenarios in the real world, and help to more accurately evaluate the structural response and safety performance of vehicles at specific collision angles.

[0022] Furthermore, the position of the front passenger seat is adjusted based on the position of the male front passenger seat in historical side collision accident data.

[0023] Based on the aforementioned technical means, the position of the male passenger seat is adjusted according to the vehicle's historical side collision accident data. The position of the passenger seat is closer to the position of a male passenger seat in a real accident, thus improving the accuracy and reliability of the test.

[0024] Furthermore, the position of the driver's seat is adjusted based on the position of the female driver's seat in historical side collision accident data.

[0025] Based on the aforementioned technical means, the position of the female driver's seat is adjusted according to the vehicle's historical side collision accident data, making the position of the driver's seat closer to the position of a woman sitting in the driver's seat in a real accident, thereby improving the accuracy and reliability of the test.

[0026] Furthermore, the dummy's head in the passenger seat is equipped with a sensor system for acquiring head collision data.

[0027] Based on the aforementioned technical means, the sensor system integrated into the dummy's head can accurately measure the dummy's head collision data. At the same time, integrating the sensor system into the dummy's head simplifies the arrangement of the sensor system, saves device space, and makes the data more realistic.

[0028] Furthermore, the sensor system includes an acceleration sensor, a displacement sensor, and an angle sensor. The acceleration sensor is used to collect the head acceleration of the dummy in the passenger seat; the displacement sensor is used to collect the head displacement of the dummy in the passenger seat; and the angle sensor is used to collect the head rotation angle of the dummy in the passenger seat.

[0029] Based on the aforementioned technical means, three different types of sensors can be used to comprehensively collect data on the dummy in the passenger seat during a side collision, including the dummy's head acceleration, head displacement, and head rotation angle; each sensor measures a specific physical quantity, ensuring the accuracy and reliability of the data.

[0030] Furthermore, step S3 includes the following sub-steps:

[0031] S31: Analyze the head acceleration, head displacement, and head rotation angle to assess the risk of head injury to the occupant in the front passenger seat during a side collision of the vehicle;

[0032] S32: Evaluate the safety of the front passenger and generate a detailed test report.

[0033] Based on the aforementioned technical means, a comprehensive assessment of the risk of head injury to the front passenger in a side collision is conducted, taking into account the head acceleration, head displacement, and head rotation angle. The generated detailed test report can provide important information for automakers, regulatory agencies, and consumers, helping them understand the safety performance of vehicles.

[0034] The beneficial effects achieved by this invention are as follows:

[0035] 1. This invention adjusts the positions of the driver's seat and the passenger seat on the sliding platform so that the distance between the driver's seat and the vehicle's dashboard is less than the distance between the passenger seat and the dashboard. This makes the constructed scenario more realistic and consistent with the practical application of female drivers and male passengers in the passenger seat. Consequently, the vehicle's side collision safety test results are more accurate, which helps automakers develop relevant protective measures to address this phenomenon and improve vehicle driving safety.

[0036] 2. This invention uses real vehicle side collision data to simulate the in-vehicle environment. That is, the side collision angle and side collision acceleration of the slide are adjusted according to the vehicle angle and acceleration of the real side collision, so that the in-vehicle environment of the passenger seat safety test slide is closer to the real application scenario, which helps to improve the authenticity and reliability of the test results. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the test method flow of the present invention;

[0038] Figure 2 This is a schematic diagram of the test information processing flow of the present invention.

[0039] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The same or similar reference numerals correspond to the same or similar components. The terms describing positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. Detailed Implementation

[0040] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific embodiments should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0042] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0043] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0044] The technical solution of this embodiment will be described in detail below with reference to the accompanying drawings.

[0045] like Figure 1 As shown, a passenger seat safety testing method based on a vehicle side collision includes the following steps:

[0046] S1: Set up a safety test slide for the passenger seat, and adjust the positions of the driver's seat and the passenger seat on the slide so that the distance between the driver's seat and the car dashboard is less than the distance between the passenger seat and the car dashboard.

[0047] S2: Adjust the side impact angle and side impact acceleration of the slide to simulate the side impact environment inside the vehicle and conduct a passenger seat safety test to obtain the crash test information of the dummy in the passenger seat;

[0048] S3: Process the crash test information of the dummy in the front passenger seat and evaluate the safety of the front passenger seat based on the processing results.

[0049] By adjusting the positions of the driver's seat and the passenger seat on the slide, the distance between the driver's seat and the vehicle's dashboard is made smaller than the distance between the passenger seat and the dashboard. This makes the constructed scenario more realistic, aligning with the practical application of female drivers and male passengers in the passenger seat. Consequently, the side-impact safety test results are more accurate, helping automakers develop relevant protective measures to improve vehicle driving safety. Simultaneously, by using real vehicle side-impact data to simulate the in-vehicle environment—that is, adjusting the side-impact angle and acceleration of the slide based on the vehicle angle and acceleration of a real side-impact collision—the in-vehicle environment of the passenger seat safety test slide is made closer to real-world application scenarios, thus improving the reliability of the test results.

[0050] This embodiment also includes: conducting a real vehicle side-impact test in advance to obtain the real-time collision acceleration of the real side-impact test. Before conducting the passenger-side side-impact safety test, conducting a real vehicle side-impact test in advance to obtain the real-time collision acceleration of the real side-impact test significantly reduces the economic and time costs of testing compared to using a real vehicle for passenger-side side-impact safety testing. By adjusting the parameters of the slide table, the test can be repeated under controlled conditions, reducing random errors and improving the consistency and repeatability of the test. Simultaneously, conducting a simulated side-impact interior environment for passenger-side safety testing makes the scenario more closely resemble a real-world scenario.

[0051] In this embodiment, the real-time collision acceleration of the actual side-impact test is obtained through the following steps:

[0052] Real-time acceleration data is collected during vehicle side-impact tests. The real-time acceleration data is then subjected to noise filtering and smoothing, and dynamic acceleration feature data is extracted. The dynamic acceleration feature data is the real-time collision acceleration of the actual side-impact test.

[0053] By performing noise filtering and smoothing on real-time acceleration data, noise and errors in the waveform data can be effectively removed, improving the purity and accuracy of the data. Simultaneously, through precise acceleration data analysis and feature extraction, key acceleration values ​​can be extracted, reducing the number of physical experiments required to some extent.

[0054] In this embodiment, the lateral collision acceleration in step S2 is adjusted based on the real-time collision acceleration from a real side-impact test. Using the real-time collision acceleration from a real side-impact test as the basis for adjustment ensures that the acceleration impact experienced by the vehicle during the test is similar to that of a real collision, which helps to more accurately simulate the dynamic behavior during the collision process.

[0055] In this embodiment, the lateral collision angle is adjusted based on the collision angles of historical vehicle side-impact accidents. By adjusting the lateral collision angle to match the angles of historical side-impact accidents, it is possible to ensure that the test conditions are closer to real-world collision scenarios, which helps to more accurately evaluate the vehicle's structural response and safety performance at specific collision angles.

[0056] Preferably, the lateral collision angle range is 90° to 135°. Statistical analysis of historical real-world lateral collision accident data shows that the amount of historical real-world lateral collision accident data is greater when the lateral collision angle range is 90° to 135° than other angle ranges. During the vehicle lateral collision tests, tests were conducted with vehicle angles of 90°, 115°, and 135°.

[0057] In this embodiment, the position of the front passenger seat is adjusted based on the position of the male front passenger seat in historical side-impact accident data. Adjusting the position of the male front passenger seat based on historical side-impact accident data makes the test scenario closer to real-world accident situations, improving the accuracy and reliability of the test.

[0058] Preferably, the male dummy in the front passenger seat position is the 50th percentile adult male side-impact dummy. The weight and size of the 50th percentile adult male side-impact dummy are specifically the 50th percentile among adult males ranked by weight, which can represent the realistic scenario in historical accidents where the front passenger seat position is occupied by a male.

[0059] In this embodiment, the position of the driver's seat is adjusted based on the position of the female driver's seat in historical side-impact accident data. Adjusting the position of the female driver's seat based on historical side-impact accident data makes the test scenario closer to real-world accident situations, improving the accuracy and reliability of the test.

[0060] Preferably, the female dummy in the driver's seat position is the 5th percentile female side-impact dummy. The weight and body size of the 5th percentile adult female side-impact dummy are specifically the 5th percentile among adult women ranked by weight, which can represent the realistic scenario in historical accidents where the driver's seat position is occupied by a woman.

[0061] In this embodiment, the dummy's head in the passenger seat integrates a sensor system for acquiring head collision data. This integrated sensor system can accurately measure the dummy's head collision data. Furthermore, integrating the sensor system into the dummy's head simplifies its placement, saves space, and results in more realistic data.

[0062] In this embodiment, the sensor system includes an accelerometer, a displacement sensor, and an angle sensor. The accelerometer is used to collect the head acceleration of the dummy in the passenger seat; the displacement sensor is used to collect the head displacement of the dummy in the passenger seat; and the angle sensor is used to collect the head rotation angle of the dummy in the passenger seat. By using these three different types of sensors, comprehensive data on the dummy in the passenger seat during a side collision can be collected, including the dummy's head acceleration, head displacement, and head rotation angle. Each sensor measures a specific physical quantity, ensuring the accuracy and reliability of the data.

[0063] like Figure 2 As shown, in this embodiment, step S3 includes the following sub-steps:

[0064] S31: Analyze head acceleration, head displacement, and head rotation angle to assess the risk of head injury to a passenger in the front passenger seat during a side collision.

[0065] S32: Evaluate the safety of the front passenger and generate a detailed test report.

[0066] A comprehensive assessment of the risk of head injury to the front passenger in a side-impact collision is conducted, taking into account head acceleration, head displacement, and head rotation angle. The resulting detailed test report can provide important information for automakers, regulators, and consumers to help them understand the safety performance of vehicles.

[0067] In the process of analyzing head acceleration, head displacement, and head rotation angle, head acceleration, head angular velocity, and head displacement are converted into head injury index (HIC) corresponding to injury risk.

[0068] In summary, the implementation process of a passenger seat safety testing method based on vehicle side collisions includes the following steps:

[0069] Step 1: Set up the passenger seat safety test slide;

[0070] Step 2: Adjust the positions of the driver's seat and the passenger seat:

[0071] The driver's seat position has been adjusted to match the driver's seat position in historical side collision accident data.

[0072] The passenger seat position has been adjusted to match the passenger seat position in historical side collision accident data.

[0073] Step 3: Based on historical vehicle side collision accident data, select and adjust the angle of the test vehicle, conduct a vehicle side collision test, collect real-time collision acceleration data during the vehicle side collision test, preprocess the real-time collision acceleration data, and extract dynamic acceleration feature data during the collision.

[0074] Step 4: Based on the dynamic characteristic data of the test vehicle's angle and acceleration, adjust the side collision angle and side collision acceleration of the slide to simulate the side collision interior environment and conduct a passenger seat safety test.

[0075] Step 5: Collect the head acceleration, head displacement, and head rotation angle of the passenger in the front passenger seat by using acceleration, displacement, and angle sensors installed on the dummy's head in the front passenger seat position.

[0076] Step Six: Analyze head acceleration, head displacement, and head rotation angle to assess the risk of head injury to the front passenger occupant in a side collision and evaluate the safety of the front passenger occupant, and generate a detailed test report.

[0077] 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. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for testing the safety of a front passenger seat based on a lateral collision of a vehicle, characterized by, The method comprises the following steps: S1: arranging a co-driver seat safety test sliding platform, adjusting the position of the driver seat and the position of the co-driver seat on the sliding platform, so that the distance between the driver seat position and the automobile operating platform is less than the distance between the co-driver seat position and the automobile operating platform; The position of the co-driver seat is adjusted according to the position of the male co-driver seat in the historical side collision accident data; The position of the driver seat is adjusted according to the position of the female driver seat in the historical side collision accident data; S2: adjusting the side collision angle and the side collision acceleration of the sliding platform, simulating the side collision environment in the vehicle to conduct a co-driver seat safety test, and obtaining the collision test information of the dummy on the co-driver seat; S3: processing the collision test information of the dummy on the co-driver seat, and evaluating the safety of the co-driver seat according to the processing result.

2. The side impact-based test method for the safety of the front passenger seat of a vehicle according to claim 1, characterized in that, Further comprising: A real vehicle side collision test is performed in advance to obtain real-time collision acceleration of the real side collision test.

3. The side impact-based test method for the front passenger seat safety of a vehicle according to claim 2, wherein The real-time collision acceleration of the real side collision test is obtained by the following steps: Acceleration real-time data is collected in the vehicle side collision test, and noise filtering and smoothing processing are performed on the acceleration real-time data, and acceleration dynamic characteristic data is extracted, which is the real-time collision acceleration of the real side collision test.

4. The side impact-based test method for the front passenger seat safety of a vehicle according to claim 2 or 3, characterized in that, The side collision acceleration in the S2 step is adjusted according to the real-time collision acceleration of the real side collision test.

5. The side impact based test method for evaluating the safety of a front passenger seat of a vehicle according to claim 4, wherein The side collision angle is adjusted according to the collision angle of the historical automobile side collision accident.

6. The side impact based test method for evaluating the safety of a front passenger seat of a vehicle according to claim 1, wherein The dummy's head on the co-driver seat is integrated with a sensor system, which is used to obtain the head collision data of the dummy.

7. The side impact-based test method for a front passenger seat safety of a vehicle according to claim 6, wherein The sensor system comprises an acceleration sensor, a displacement sensor and an angle sensor, the acceleration sensor is used to collect the head acceleration of the dummy, the displacement sensor is used to collect the head displacement of the dummy, and the angle sensor is used to collect the head rotation angle of the dummy.

8. The side impact-based test method for the safety of the front passenger seat of a vehicle according to claim 7, characterized in that, The S3 step comprises the following sub-steps: S31: analyzing the head acceleration, the head displacement and the head rotation angle to evaluate the head injury risk of the occupant located on the co-driver seat in the vehicle side collision; S32: evaluating the safety of the co-driver occupant and generating a detailed test report.

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