A bench test method for a car door system

Abstract

This invention relates to a bench test method for a vehicle door system, comprising pre-test preparation steps, test process steps, and post-test result evaluation steps. This technical solution systematically and comprehensively identifies the electrical functions associated with the vehicle door system during testing and the related electrical functions affecting the test, establishing a set of test procedures and methods to achieve the goal of conforming to actual working conditions and scientifically guiding the test. It solves the problems of effectively matching the testing methods for various electrical functions with the vehicle door system and the inconsistent number of cycles in the test plan, ensuring more scientific and effective test results. It establishes a subjective evaluation approach and method for vehicle door system testing, ensuring that the test results are more comprehensive and closely reflect user experience.

Description

Technical Field

[0001] This invention belongs to the field of automotive testing technology, specifically relating to a bench test method for a car door system. Background Technology

[0002] With the advancement of automotive electrification and intelligence, the door system not only fulfills its functional attributes—facilitating entry and exit for passengers—but also serves as a trigger and control hub for some other electrical and intelligent functions, such as the automatic adjustment functions of electric seats and electric rearview mirrors.

[0003] Therefore, the process of verifying the function and quality of the car doors should be adapted to actual usage conditions in order to better simulate customer usage scenarios. For example, when closing the car doors, there are also issues regarding the passenger's experience due to differences in the height and speed of the window regulators.

[0004] Therefore, in the process of verifying the door system, it is necessary to fully verify the quality of the system's components, consider the verification of various electrical and intelligent functions, and take into account the customer's application scenarios and experience. Only by taking into account all relevant factors can the purpose of verification be better achieved.

[0005] Currently, the industry typically employs the following approach for bench validation of shop floor systems:

[0006] 1. Individual mechanical function verification: Install all auxiliary devices on the door system according to the requirements of the actual vehicle, and use pneumatic or electric operating mechanisms to realize the unlocking and opening actions of the door individually or in combination, so as to complete the reliability and life test of the mechanical part of the door system.

[0007] 2. Functional verification considering comprehensive environmental factors: The testing mode is similar to that of individual mechanical function verification, but a more advanced approach considers the operating environment of the door system, such as high temperature, low temperature, humidity, and dirt. Reliability and lifespan testing of the mechanical components of the door system is completed by simulating the operating environment and matching the parameters.

[0008] The disadvantages of existing technology are:

[0009] (1) Lack of verification that takes into account various electrical functions: During the opening or closing process, the door system is connected to other electrical functions, such as the memory adjustment of the electric seat and the automatic folding of the rearview mirror when locking. Some existing vehicles already have this function, but it is lacking in the verification methods for the door system, resulting in a deficiency in the verification of the function and quality of the whole vehicle.

[0010] (2) Lack of verification of user scenarios: During daily use of car doors, the door glass may not be fully closed when opening and closing the doors. This condition is not identified in the current verification, and the system is usually closed in the state of maximum resistance. At the same time, in actual scenarios, the speed of opening and closing the door is not always in the loading process. The final stage of operation is achieved by the inertia of the door itself, which has not been considered in the current test. Therefore, the system test does not match the customer's and manufacturer's requirements.

[0011] (3) Lack of verification and evaluation of subjective experience of drivers and passengers: At present, the evaluation of test results is based on objective confirmation, such as whether the parts are worn and damaged, whether the functions are normal, and whether the appearance meets the requirements. If a more accurate comprehensive evaluation is needed, it is often done by using objectively collected data to analyze and evaluate trends, etc., lacking subjective evaluation.

[0012] In summary, establishing a bench verification method for vehicle door systems that takes into account various application scenarios and the testing of related electrical functions, and comprehensively evaluating the system based on three dimensions—mechanical stability, functional reliability, and subjective experience of drivers and passengers—is of great significance for the quality evaluation and improvement of vehicle door systems. Summary of the Invention

[0013] The purpose of this invention is to provide a bench test method for a vehicle door system. By defining the test process and method for the vehicle door system, it achieves systematic verification of the electrical functions of the door system's triggering and interlocking. At the same time, it adopts a method that simulates the user's usage scenario in a real vehicle and the subjective experience of the driver and passengers to comprehensively examine the system. This method is more in line with the actual user's functional and quality requirements for the system, and obtains a real, effective test result that meets the user's needs.

[0014] To achieve the above objectives, this application employs the following technical solution:

[0015] A bench test method for a vehicle door system includes, in sequence, pre-test preparation steps, test procedure steps, and post-test result evaluation steps.

[0016] S1. Pre-test preparation steps:

[0017] (11) The function identification steps include: 1) Identifying electrical functions associated with the door system, identifying and recording electrical functions associated with door opening and closing; 2) Testing the associated electrical function communication protocol to achieve remote function control;

[0018] (12) The status confirmation steps before the test include: 1) Adjusting and confirming the test electrical functions according to the list of electrical functions associated with the door system identified in step 1; 2) Confirming the auxiliary components of the door system; 3) Confirming the normal adjustment and control of the matching function in the door system verification through remote communication control; 4) Checking the air tightness test of the test vehicle, and the test results must meet the design requirements.

[0019] S2. Test process steps:

[0020] (21) The test method confirmation steps include: 1) Before conducting the test mode or when the working conditions change during the test, it is necessary to determine whether the test adopts the standard method determined before the test; 2) During the test, it is necessary to continuously confirm whether the standard test method is accurately executed.

[0021] (22) Evaluate and check the relevant indicators in the testing process according to the standards determined before the test, and improve the subjective evaluation in combination with the evaluation items before the test;

[0022] S3. Post-test evaluation steps:

[0023] (31) Electrical evaluation, based on the test results of the electrical functions associated with the door system;

[0024] (32) Evaluation of the door system: Evaluation is conducted based on the test results of the function and status of the mechanical parts of the door system.

[0025] (33) Subjectively evaluate the detection results of steps (31) and (32).

[0026] Furthermore, step S1 also includes learning relevant electrical function inspection and setting methods, collecting corresponding electrical function test and assessment standards; decomposing and matching the electrical function assessment standards with the door system test and assessment standards to ensure that the door system verification is carried out in various environments and working conditions.

[0027] Furthermore, step S1 also includes a data acquisition step. The scope of data acquisition is based on the evaluation indicators of a specific single component and the system. Subjective evaluation data must include evaluations of door system operation and vehicle door closing air pressure sensation.

[0028] Furthermore, the door-related electrical functions mainly include the electrical functions triggered in the door opening and closing and / or door unlocking and locking modes.

[0029] Furthermore, the opening and closing speed of the vehicle door system shall be in accordance with the standard. If the standard does not specify a speed, it shall be 1.2 to 1.5 times the normal opening and closing speed measured by no less than 10 people, and the maximum speed shall not exceed 2 m / s.

[0030] Furthermore, the door system's opening and closing loading detection process simulates actual working conditions. The opening mode loading should be released when the door opens to the maximum position of the limit switch; the closing mode loading should be released when the door closes to the maximum position of the limit switch.

[0031] Furthermore, the identification of door-related electrical functions is mainly based on the vehicle's list of electrical functions; the identification of door test-related electrical functions is mainly based on the electrical functions that affect the test parameters in the door system test.

[0032] Furthermore, the electrical function standards associated with the doors are matched with the door system testing standards. If the environmental conditions are present in the electrical function standards and are similar in proportion to the door system, then they are implemented according to their own proportions. If they are not present or are significantly different from the door system, then the electrical function standards are decomposed according to the distribution proportions of various operating conditions and environments in the door system's reliability.

[0033] The beneficial effects of this invention are:

[0034] (1) Through the approach of this invention, the electrical functions associated with the door system and the associated electrical functions affecting the test were systematically and in detail identified, and a set of test procedures and methods were established to achieve the goal of conforming to actual working conditions and scientifically guiding the test.

[0035] (2) The test plan effectively matched the methods for testing various electrical functions and the door system, as well as the inconsistent number of cycles, ensuring that the test results were more scientific and effective.

[0036] (3) A subjective evaluation approach and method for testing the door system were established to ensure that the test results are more comprehensive and closer to the user experience.

[0037] (4) It solves the definition of various key parameters in the door system, and improves the accuracy of the test, such as the load release position and the speed definition of door loading. Attached Figure Description

[0038] Figure 1 This is a flowchart of the testing process for this invention. Detailed Implementation

[0039] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, and should not be construed as limiting the technical solution of the present invention.

[0040] This application provides a bench test method for a vehicle door system, which includes pre-test preparation steps, test process steps, and post-test result evaluation steps.

[0041] I. Preparation steps before testing:

[0042] 1. Identification of functions associated with the door system:

[0043] 1) Based on the vehicle's functional configuration list and electrical function list, identify and record the electrical functions associated with door opening and closing.

[0044] 2) Learn the relevant electrical function inspection and setting methods, and collect the corresponding electrical function test and assessment standards; decompose and match the electrical function assessment standards with the door system test and assessment standards to ensure that the door system verification is carried out in various environments and working conditions.

[0045] 3) Confirm and check the communication functions of the test vehicle or the complete vehicle, sort out the communication protocols corresponding to the electrical functions involved, and realize remote function control.

[0046] 2. Status confirmation before testing:

[0047] 1) Adjust and confirm the electrical functions of the test vehicle according to the list of electrical functions associated with the identified door system. Be sure to confirm the normal function by combining manual confirmation and automatic door opening and closing control mode.

[0048] 2) Confirm the normal adjustment and control of the matching functions in the door system verification through remote communication control, and avoid the inability to automatically adjust during the test, such as the automatic raising and adjustment of the window regulator, the opening and closing of the electric sunroof, etc.

[0049] 3) Confirmation of vehicle accessories: Samples of the door system must be installed and tested to ensure normal operation; the condition of accessories such as rubber strips must meet the test requirements.

[0050] Check the airtightness test of the test vehicle, and the test results must meet the design requirements; in particular, the assembly of the vent holes must meet the standard requirements.

[0051] II. Testing Process Steps:

[0052] The testing process is as follows Figure 1As shown, in order to avoid omissions and ensure that the tests are carried out in a required, orderly and scientific manner, the testing work is carried out in accordance with the following test flowchart and the corresponding work breakdown list.

[0053] Work Breakdown List

[0054]

[0055]

[0056] 10. Regarding the corresponding testing procedures and the worksheet content above, some testing methods need to be specifically clarified, as follows:

[0057] (1) Door-related electrical functions mainly include the electrical functions triggered in the door opening and closing (door unlocking and locking) modes. Currently, mainstream models mainly include automatic folding and unfolding of electric rearview mirrors, electric seat memory and welcome functions, interior and exterior lighting, and welcome functions.

[0058] The electrical functions related to door testing mainly refer to the electrical functions that affect the test conditions of the door system during testing. Currently, this primarily involves functions affecting airflow and vibration during the opening and closing of the door system, such as power window regulator systems and power sunroof systems.

[0059] (2) Identification of door-related electrical functions is mainly based on the vehicle's electrical function list; the electrical functions related to door testing are mainly based on electrical functions that affect the test parameters in the door system test. For example, the height of the window regulator affects the airflow inside the vehicle, thus affecting the closing speed and impact. Based on the above approach, a detailed identification of electrical functions and learning of the corresponding test standards are conducted before the test.

[0060] (3) The electrical function standards associated with the doors are matched with the door system test standards. If the environmental conditions are present in the electrical function standards and are similar in proportion to the door system, then they shall be implemented according to their own proportions. If they are not present in the electrical function standards or are significantly different from the door system, then the electrical function standards shall be decomposed according to the distribution proportions of various conditions and environments in the reliability of the door system.

[0061] If the automatic folding function of the electric rearview mirrors has no environmental conditions, it can be decomposed according to the door system's normal temperature, high temperature, low temperature, and humid heat environments in a 5:2:2:1 ratio. If the number of reliability parameters cannot be kept consistent, the decomposition should be interleaved into the door system with at least two parameters for each condition and an even number of cycles.

[0062] If the door system is subjected to 30,000 high-temperature cycles and the electric rearview mirror automatic folding function is subjected to 400 high-temperature cycles, then the system is divided into two cycles based on the number of doors. Each cycle contains 200 cycles, meaning that the electric rearview mirror will automatically fold once every 75 cycles.

[0063] (4) Matching the electrical function standards related to door testing with the door system testing standards mainly involves factors affecting the test quality of the door, primarily identifying window regulators and electric sunroofs. Window regulators are analyzed in three positions: fully closed, 1 / 2 position, and 1 / 3 position, all in a 6:2:2 ratio. Electric sunroofs are analyzed in three positions: fully closed, fully open, and ventilation mode, all in a 6:2:2 ratio.

[0064] (5) The functional verification of the sample shall be carried out in accordance with the evaluation indicators of the specific individual component and the system.

[0065] (6) Test vehicles or fully assembled samples need to undergo a sealing test in accordance with the vehicle airtightness test standard. The test results must meet the vehicle's design technical specifications. At the same time, the vehicle's ventilation device must be checked and ensured to meet the design requirements.

[0066] (7) The scope of data collection shall be based on the evaluation indicators of the specific single component and the system. Subjective evaluation data must include evaluations of door system operation and vehicle door closing air pressure.

[0067] (8) When changing the operating conditions during the test (such as changing the door system outward opening reliability from low temperature to high temperature) or changing the test mode (such as adjusting the window regulator from the fully closed position to the 1 / 2 position in the door system outward opening reliability test), the comparison and confirmation with the test plan shall be increased.

[0068] (9) Subjective evaluations shall be conducted at least three times during the experiment, with the evaluation content referring to the evaluation indicators before the experiment.

[0069] (10) During the entire test, inspections and monitoring shall be carried out as required. The interval between inspections shall not exceed 10% of the test cycle under the working condition. The inspection and monitoring shall include the requirements of the indicators related to the test parameters, vehicle or sample status, and equipment status.

[0070] 11. Simulate actual working conditions during the opening and closing loading process of the door system. The loading in the opening mode should be released when the door reaches the maximum position of the last stop of the limit switch in the opening direction; the loading in the closing mode should be released when the door reaches the maximum position of the last stop of the limit switch in the closing direction.

[0071] 12. The opening and closing speed of the vehicle door system may be implemented in accordance with the standard. If there is no specific standard, it may be implemented at 1.2 to 1.5 times the normal opening and closing speed measured by no less than 10 people, and the maximum speed shall not exceed 2m / s.

[0072] 13. During the test, the unlocking and locking modes shall be executed according to their main operation methods. If there is no key control, the external operation mode shall be used in the test.

[0073] This technical solution primarily addresses the matching test of the door system and its associated electrical functions and the electrical functions affecting testing during the vehicle development phase. It also addresses issues such as the process and methods, the definition of key indicators and parameters in the entire matching test, and the matching with actual customer usage conditions and scenarios, ensuring the comprehensiveness, relevance, and scientific nature of the test. It can also be used for functional assessment, quality confirmation, and type testing of the door system in mass-produced vehicles. Furthermore, it can be used to check the electrical functions of the door system and, by using this process and method, identify and establish bench test methods for other vehicle functions.

[0074] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A bench test method for a vehicle door system, comprising, in sequence, pre-test preparation steps, test process steps, and post-test result evaluation steps: characterized in that, S1. Pre-test preparation steps: (11) Function identification steps include: 1) Identifying electrical functions associated with the door system: Based on the vehicle's function configuration list and electrical function list, identify and record the electrical functions associated with the door system; the electrical functions associated with the door system include the automatic folding and unfolding of the electric rearview mirror, electric seat memory and welcome function, interior and exterior lighting and welcome function triggered in the door opening and closing and / or door unlocking and locking modes; 2) Learn the methods for checking and setting electrical functions associated with the door system, and collect the test and assessment standards for electrical functions associated with the door system. The test and assessment standards for the electrical functions are matched with the test and assessment standards for the door system. If the environmental conditions are specified in the test and assessment standards for the electrical functions and are similar to the cycle number allocation ratio in the test and assessment standards for the door system, then the cycle number allocation ratio of the test and assessment standards for the electrical functions shall be followed. If the environmental conditions are not specified in the test and assessment standards for the electrical functions or are significantly different from the test and assessment standards for the door system, then the test and assessment standards for the electrical functions shall be decomposed according to the cycle number allocation ratio of various conditions and environments in the test and assessment standards for the door system. If the cycle number of the electrical function test is inconsistent with that of the door system test, then the test of the electrical function shall be interspersed in the test of the door system. 3) Identify and implement the communication protocols corresponding to the electrical functions involved to achieve remote functional control; (12) The status confirmation steps before the test include: 1) Adjusting and confirming the electrical functions of the test vehicle according to the list of electrical functions associated with the door system identified in step (11); 2) Confirming the status of the auxiliary components of the door system; 3) Confirming the normal adjustment and control of the matching function in the door system verification through remote communication control; 4) Checking the airtightness test of the test vehicle, and the test results must meet the design requirements. S2. Test process steps: (21) The test method confirmation steps include: 1) Before conducting the test mode or when the working conditions change during the test, it is necessary to determine whether the test adopts the test plan determined before the test; 2) During the test, it is necessary to continuously confirm whether the test plan is accurately executed. (22) Evaluate and inspect the test parameters, vehicle or sample status and equipment status during the testing process according to the evaluation indicators determined before the test, and improve the subjective evaluation in conjunction with the evaluation items before the test; S3. Post-test evaluation steps: (31) Electrical evaluation, based on the test results of electrical functions associated with the door system; (32) Evaluation of the door system: Evaluation is conducted based on the test results of the function and status of the mechanical parts of the door system; (33) Subjectively evaluate the detection results of steps (31) and (32).

2. The bench test method for a vehicle door system according to claim 1, characterized in that, Step S1 also includes a data acquisition step. The scope of data acquisition is based on the evaluation indicators of a specific single component and the door system. Subjective evaluation data must include evaluations of door system operation and the feeling of air pressure when the vehicle door is closed.

3. The bench test method for a vehicle door system according to claim 1, characterized in that, The opening and closing speed of the vehicle door system shall be in accordance with the standard. If there is no specific standard, it shall be 1.2 to 1.5 times the normal opening and closing speed measured by no less than 10 people, and the maximum speed shall not exceed 2 m / s.

4. The bench test method for a vehicle door system according to claim 1, characterized in that, During the door system opening and closing load detection process, the actual working conditions are simulated. The loading in the opening mode should be released when the door opens to the maximum position of the limit switch; the loading in the closing mode should be released when the door closes to the maximum position of the limit switch.

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