Safety airbag curtain point explosion test method and system for replacing whole vehicle collision experiment

Abstract

The application provides a safety air curtain point explosion test method and system for replacing a whole vehicle collision experiment, and the method comprises the following steps: obtaining the arrangement specification of a target vehicle according to the target vehicle, so as to respectively install each component on the body-in-white of the target vehicle according to the arrangement specification; sending a first electric signal to the safety air curtain through a wire harness, so that the safety air curtain performs a primary point explosion according to the first electric signal, and obtaining an experimental video of the primary point explosion; frame by frame identifying the image contained in the experimental video in the primary point explosion, so as to judge whether splashes are generated in the primary point explosion process; if the splashes are generated in the primary point explosion process, determining the component failure reason according to the splashes, optimizing the target component according to the component failure reason, and performing an advanced point explosion on the safety air curtain. The safety air curtain point explosion test method for replacing the whole vehicle collision experiment can save component test resources and whole vehicle collision test resources.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of point explosion test, in particular to a safety curtain point explosion test method and system for replacing vehicle collision experiment. BACKGROUND

[0002] The conventional safety curtain static point explosion test is to install roof, column trim, safety curtain, wire harness, reading lamp, handrail and other related parts on the body-in-white according to the design requirements, and the body-in-white is placed on the ground, under the required environment temperature, an electric signal is sent to the safety curtain through the wire harness to trigger the safety curtain and point explosion of the safety curtain, a large amount of gas is generated under the action of the gunpowder to make the safety curtain expand rapidly, and the safety curtain is unfolded downward from the roof trim, in this process, the safety curtain will act on the related parts, and if the design is unreasonable, the parts will be splashed under the action of the force. If there is splashing, according to the engineering experience analysis and the next scheme verification, until the problem is solved.

[0003] The test method is relatively single, and the data after the test cannot effectively guide the designers, and is largely dependent on the engineering experience of the designers, a large number of test resources are needed to try and error, which leads to the difficulty for the personnel with insufficient engineering experience to quickly lock the problem, and the test resources are greatly wasted. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a safety curtain point explosion test method and system for replacing vehicle collision experiment, so as to ensure that even the designers with insufficient project experience can quickly lock the problem points and implement effective solutions, thereby saving the test resources of parts and the test resources of vehicle collision.

[0005] According to the safety curtain point explosion test method for replacing vehicle collision experiment provided by the present application, the method comprises:

[0006] A target vehicle to be tested is obtained, and a layout specification of the target vehicle is obtained according to the target vehicle, so as to install a safety curtain, a roof, a column trim, a reading lamp, a wire harness and a handrail on a body-in-white of the target vehicle according to the layout specification;

[0007] A first electric signal is sent to the safety curtain through the wire harness, so that the safety curtain is subjected to primary point explosion according to the first electric signal, and an experimental video of the primary point explosion is obtained;

[0008] The images contained in the experimental video in the primary point explosion are identified frame by frame, so as to judge whether splashing occurs in the primary point explosion process according to the identification result;

[0009] If splashes are generated in the initial stage of the point explosion, the failure cause of the parts is determined according to the splashes, and the target parts are optimized according to the failure cause of the parts, so as to perform the advanced point explosion on the safety air curtain according to the optimization result, until no splashes are generated in the advanced point explosion.

[0010] Further, the step of determining the failure cause of the parts according to the splashes if splashes are generated in the initial stage of the point explosion, and optimizing the target parts according to the failure cause of the parts, so as to perform the advanced point explosion on the safety air curtain according to the optimization result, until no splashes are generated in the advanced point explosion, comprises:

[0011] If splashes are generated in the initial stage of the point explosion, a target image containing the splashes is obtained, and the fixed position of the splashes is identified according to the target image;

[0012] The failure cause of the parts is obtained according to the fixed position of the splashes, and the structure and material of the abnormal parts are optimized according to the failure cause of the parts.

[0013] Further, the step of obtaining the failure cause of the parts according to the fixed position of the splashes, and optimizing the structure and material of the abnormal parts according to the failure cause of the parts, comprises:

[0014] If the failure cause of the parts is that the splashes are fixed on the body-in-white, and the fixed point of the parts fails, the structure of the fixed point is optimized, the overlapping mode of the fixed point is optimized, and the material strength of the fixed point is increased;

[0015] If the failure cause of the parts is that the splashes are fixed on the roof, and the fixed point of the parts fails, the structure, the overlapping mode and the material strength of the fixed point are optimized;

[0016] If the failure cause of the parts is that the splashes are fixed on the roof, and the body of the parts fails, the structure and the material strength of the parts are optimized.

[0017] Further, the step of obtaining the failure cause of the parts according to the fixed position of the splashes, and optimizing the structure and material of the abnormal parts according to the failure cause of the parts, further comprises:

[0018] The body-in-white after optimization is placed statically, the safety air curtain is installed at the designed fixed point, an acceleration sensor is installed on the roof at the parts where the splashes are generated and the periphery thereof, a tearing line is generated around the failed parts, the depth of the tearing line is measured, and whether the depth of the tearing line meets the design value requirement is judged.

[0019] If the depth of the tear line meets the design value requirement, the safety is installed at the design fixed point position according to the arrangement specification, and the wiring harness, reading lamp, handrail, ceiling and column trim are installed to the design position.

[0020] Further, the step of installing the safety at the design fixed point position according to the arrangement specification if the depth of the tear line meets the design value requirement, and installing the wiring harness, reading lamp, handrail, ceiling and column trim to the design position further comprises:

[0021] sending a second electrical signal to the safety airbag through the wiring harness, so that the safety airbag performs an advanced point explosion according to the second electrical signal, and obtaining an experimental video of the advanced point explosion;

[0022] judging whether there is splash according to the experimental video of the advanced point explosion;

[0023] If it is judged that there is no splash according to the experimental video of the advanced point explosion, the acceleration experimental value of the acceleration sensor is recorded;

[0024] calculating the acceleration value of the body-in-white according to the acceleration experimental value, and obtaining the ignition time of the engine according to the acceleration value of the body-in-white.

[0025] Further, the step of calculating the acceleration value of the body-in-white according to the acceleration experimental value, and obtaining the ignition time of the engine according to the acceleration value of the body-in-white comprises:

[0026] obtaining the mass of the component and the mass of the acceleration sensor, compensating the acceleration experimental value according to the mass of the component, the mass of the acceleration sensor and the acceleration experimental value, and obtaining the acceleration value of the body-in-white according to the compensation result.

[0027] Further, the step of compensating the acceleration value of the body-in-white according to the mass of the component, the mass of the acceleration sensor and the acceleration experimental value comprises:

[0028] compensating the acceleration experimental value according to the following formula:

[0029] m1(a1+a2)=(m1+m2)a1

[0030] wherein m1 represents the mass of the component, m2 represents the mass of the acceleration sensor, a1 represents the acceleration generated when the airbag explodes, i.e. the acceleration experimental value, and a2 represents the acceleration generated by the body-in-white near the reading lamp when the real vehicle collides.

[0031] A safety airbag point explosion test system for replacing a whole vehicle collision test according to an embodiment of the present application, characterized in that the system comprises:

[0032] The layout specification acquisition module is used to acquire the target vehicle model to be tested, and to acquire the layout specification of the target vehicle based on the target vehicle model, so as to install the safety curtain airbag, roof, pillar trim, reading light, wiring harness and armrest on the white body of the target vehicle according to the layout specification;

[0033] The initial detonation execution module is used to send a first electrical signal to the safety curtain through the wiring harness, so that the safety curtain performs initial detonation according to the first electrical signal, and to acquire the experimental video of the initial detonation.

[0034] The first experimental video recognition module is used to identify the images contained in the experimental video in the initial detonation frame by frame, so as to determine whether splashing material is generated during the initial detonation process based on the recognition results.

[0035] The initial detonation optimization module is used to determine the cause of component failure based on the splashes generated during the initial detonation process, and to optimize the target component based on the cause of component failure, so as to perform advanced detonation of the safety curtain based on the optimization results, until no splashes are generated during the advanced detonation process.

[0036] Furthermore, the initial-order detonation optimization module also includes:

[0037] The splash object recognition unit is used to acquire a target image containing the splash object if splash object is generated during the initial detonation process, and to identify the fixed position of the splash object based on the target image.

[0038] The component optimization unit is used to obtain the cause of component failure based on the fixed position of the splash, and to optimize the structure and materials of the abnormal component based on the cause of component failure.

[0039] Furthermore, the component optimization unit also includes:

[0040] The first optimization subunit is used to optimize the structure of the failed fixing point and optimize the overlapping method of the failed fixing point if the cause of the component failure is that the splash is fixed to the body-in-white and the fixing point of the component fails, and at the same time increase the material strength property of the failed fixing point.

[0041] The second optimization subunit is used to optimize the fixing point structure, overlapping method and material strength if the failure of the component is due to the splash being fixed on the ceiling and the component fixing point failing.

[0042] The third optimization subunit is used to optimize the component structure and its material strength if the component fails because the splash is fixed on the ceiling and the component itself fails.

[0043] The safety air bag point explosion test method for replacing the whole vehicle collision experiment according to the present application sets the primary point explosion process to confirm the specific component failure reason, and then optimizes the component structure in a targeted manner, and at the same time, in order to verify whether the optimized component structure is effective, a specific advanced point explosion test is set, and based on the establishment of the primary and advanced test methods and systems, it is beneficial to assist the test personnel to quickly identify the failure problem, and to implement effective optimization and verification on the failure problem, without the need for the test personnel to be experienced, and greatly saves the component test resources and the whole vehicle collision test resources.

[0044] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 The adaptive cruise follow-stop control for the safety air bag point explosion test method for replacing the whole vehicle collision experiment is proposed for the first embodiment of the present application;

[0046] Figure 2 The flowchart of the safety air bag point explosion test method for replacing the whole vehicle collision experiment is proposed for the second embodiment of the present application;

[0047] Figure 3 The structure diagram of the safety air bag point explosion test system of the air intake system for replacing the whole vehicle collision experiment is proposed for the third embodiment of the present application.

[0048] The following specific embodiments will further illustrate the present application in conjunction with the above drawings. DETAILED DESCRIPTION

[0049] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The drawings show several embodiments of the present application. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the specification of the present application herein is only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0051] Please refer to Figure 1, and the flow chart of the safety curtain point explosion test method for replacing the whole vehicle collision experiment in the first embodiment of the application is shown, and the method comprises steps S01 to S04, wherein:

[0052] Step S01: obtaining a target vehicle to be tested, and obtaining a layout specification of the target vehicle according to the target vehicle, so as to install a safety curtain, a roof, a pillar trim, a reading lamp, a wire harness and a handrail on a body-in-white of the target vehicle according to the layout specification;

[0053] It should be noted that since there are various types of vehicles to be tested, and the layout specifications of different vehicles are different, therefore, the layout specifications of various types of vehicles are stored in the database in advance, so that the corresponding layout specification can be quickly retrieved after the input target vehicle is obtained, and then the parts are installed according to the specification.

[0054] Step S02: sending a first electrical signal to the safety curtain through the wire harness, so that the safety curtain performs a primary point explosion according to the first electrical signal, and obtaining an experimental video of the primary point explosion;

[0055] It can be understood that when the primary point explosion test is started, the test system continuously shoots the live monitoring video of the primary point explosion test through the camera therein, so that the source of the splashes can be identified according to the live monitoring video subsequently.

[0056] Step S03: frame-by-frame identifying the images contained in the experimental video in the primary point explosion, so as to determine whether splashes are generated in the primary point explosion process according to the identification result;

[0057] Step S04: if splashes are generated in the primary point explosion process, determining the failure cause of the parts according to the splashes, and optimizing the target parts according to the failure cause of the parts, so as to perform a secondary point explosion on the safety curtain according to the optimization result, until no splashes are generated in the secondary point explosion process.

[0058] It should be noted that the experimental video in the primary point explosion is frame-by-frame identified according to the pre-trained target identification model, so as to determine whether splashes are generated according to the identification result, and then the failure cause is confirmed, that is, the problem is effectively locked, and then the failure problem is optimized, and then the corresponding secondary point explosion is performed to verify the effectiveness of the optimization result, without the need for the test personnel to have a large amount of engineering experience.

[0059] In summary, according to the safety air bag point explosion test method for replacing the whole vehicle collision experiment provided by the application, the specific component failure reason is confirmed through the setting of the initial stage point explosion process, and then the component structure is optimized accordingly, and in order to verify whether the optimized component structure is effective, a specific advanced point explosion test is set up, and based on the establishment of the initial stage and advanced test test method and system, it is beneficial to help the test personnel to quickly identify the failure problem and implement effective optimization and verification of the failure problem, without the need for the test personnel to have rich experience, and greatly saving the component test resources and whole vehicle collision test resources.

[0060] Please refer to Figure 2 , which is a flow chart of the safety air bag point explosion test method for replacing the whole vehicle collision experiment in the second embodiment of the application, and the method comprises steps S101 to S108, wherein:

[0061] Step S101: obtaining a target vehicle to be tested, and obtaining a layout specification of the target vehicle according to the target vehicle, so as to install a safety air bag, a roof, a pillar trim, a reading lamp, a wire harness and a handrail on a body-in-white of the target vehicle respectively according to the layout specification;

[0062] Step S102: sending a first electric signal to the safety air bag through the wire harness, so that the safety air bag performs an initial stage point explosion according to the first electric signal, and obtaining an experimental video of the initial stage point explosion;

[0063] Step S103: frame-by-frame identifying images contained in the experimental video in the initial stage point explosion, so as to judge whether splashes are generated in the initial stage point explosion process according to the identification result;

[0064] Step S104: if splashes are generated in the initial stage point explosion process, obtaining a target image containing the splashes, and identifying a fixed position of the splashes according to the target image;

[0065] Step S105: obtaining a component failure reason according to the fixed position of the splashes, and optimizing the structure and material of an abnormal component according to the component failure reason;

[0066] It should be noted that the specific optimization process is: if the component failure reason is that the splashes are fixed on the body-in-white and the component fixed point fails, then the structure of the failed fixed point is optimized, the overlapping method of the failed fixed point is optimized, and the material strength property of the failed fixed point is increased;

[0067] If the component failure reason is that the splashes are fixed on the roof and the component fixed point fails, then the fixed point structure, the overlapping method and the material strength are optimized;

[0068] If the failure cause of the part is that the splash is fixed on the roof, and the part body fails, the part structure and its material strength are optimized.

[0069] Step S106: After the optimized body-in-white is statically placed, the airbag is installed at the designed fixing point position, an acceleration sensor is installed on the roof at the part where the splash is located and its periphery, a tear line is generated around the failed part, and the depth of the tear line is measured to determine whether the depth of the tear line meets the design value requirement.

[0070] Generally, the part fixed on the roof is in a clamping state, and the part fixed on the body-in-white is in a screwing state. Therefore, if the part body strength is not enough to fail, the body is strengthened, and then the risk is concentrated in the fixing point and the lap joint position with the roof. If the fixing method is changed to screwing, the impact force will further impact the part to cause its failure. The failure sequence is generally the body first, and if the body is not a problem, the fixing point strength is. Since the part and the body-in-white are screwed, the lap joint position of the part and the body-in-white generally does not have a risk.

[0071] In the test verification stage, the initial point explosion test has been completed, and it is found that the part body failure causes the splash to appear. At this time, the advanced test process will be performed.

[0072] Step S107: If the depth of the tear line meets the design value requirement, the airbag is installed at the designed fixing point position according to the arrangement specification, and the wire harness, reading lamp, armrest, roof, and pillar trim panel are installed to the designed position.

[0073] Step S108: A second electrical signal is sent to the airbag through the wire harness to make the airbag perform an advanced point explosion according to the second electrical signal, and an experimental video of the advanced point explosion is obtained.

[0074] Step S109: Whether a splash is generated is determined according to the experimental video of the advanced point explosion.

[0075] Step S110: If it is determined according to the experimental video of the advanced point explosion that no splash is generated, the acceleration experimental value of the acceleration sensor is recorded.

[0076] Step S111: The acceleration value of the body-in-white is calculated according to the acceleration experimental value, and the ignition time of the engine is obtained according to the acceleration value of the body-in-white.

[0077] Specifically, in the step of obtaining the acceleration value of the body-in-white, the mass of the part and the mass of the acceleration sensor are first obtained, the acceleration experimental value is compensated according to the mass of the part, the mass of the acceleration sensor, and the acceleration experimental value, and the acceleration value of the body-in-white is obtained according to the compensation result.

[0078] The acceleration experimental value is compensated according to the following formula:

[0079] m1(a1+a2)=(m1+m2)a1

[0080] Wherein, m1 represents the part mass, m2 represents the acceleration sensor mass, a1 represents the acceleration generated when the airbag is detonated, i.e. the acceleration experimental value, and a2 represents the acceleration generated by the body-in-white near the reading lamp when the real vehicle collides.

[0081] It should be further noted that the acceleration curve of the real vehicle collision is constructed according to the obtained acceleration value of the body-in-white, and the target acceleration lower than the calculated value is obtained according to the acceleration curve, and the time period in which the target acceleration is located is obtained according to the target acceleration, and then the detonation time of the engine or the airbag is defined according to the time period.

[0082] Further, if the problem cannot be solved by adding the weakening line, i.e. the splashes are still generated in the advanced detonation test, then the part body strength needs to be increased through an engineering scheme, and then the advanced detonation test is repeated; if the part body is not failed, but the fixing point is failed and the weakening line cannot be solved, then the installation mode of the part is changed to be connected with the vehicle body without changing the arrangement position, and the advanced detonation test is repeated, and under the normal circumstances, the engineering scheme can be successfully completed under the test scheme execution in the case that the part arrangement position is reasonable and the weakening line design is reasonable. If the part is changed to be connected with the vehicle body (i.e. the lap joint mode is adjusted), and the fixing point is failed due to the part body being strengthened again, then the fixing point strength needs to be optimized, and then the advanced detonation test is repeated until no splashes are generated in the advanced detonation test, and then the detonation time of the airbag is adjusted, i.e. the whole test scheme is completed.

[0083] In summary, according to the safety air curtain detonation test method for replacing the whole vehicle collision experiment provided by the present application, the specific part failure reason is confirmed through the setting of the initial stage detonation process, and the part structure is optimized accordingly, and in order to verify whether the optimized part structure is effective, a specific advanced detonation test is set, and based on the establishment of the initial stage and advanced test test method and system, it is beneficial to assist the test personnel to quickly identify the failure problem and implement effective optimization and verification of the failure problem, without the need for the test personnel to be experienced, and greatly saving the part test resources and the whole vehicle collision test resources.

[0084] Referring to Figure 3 , a structure schematic diagram of a safety air curtain detonation test system for replacing a whole vehicle collision experiment in a third embodiment of the present application is shown, and the system comprises:

[0085] The arrangement specification acquisition module 10 is configured to acquire a target vehicle model to be tested, and acquire an arrangement specification of the target vehicle according to the target vehicle model, so as to install a safety airbag, a roof, a pillar trim, a reading lamp, a wire harness and a handrail on a body-in-white of the target vehicle according to the arrangement specification.

[0086] The primary-stage point explosion execution module 20 is configured to send a first electric signal to the safety airbag through the wire harness, so that the safety airbag performs a primary-stage point explosion according to the first electric signal, and acquires an experimental video of the primary-stage point explosion.

[0087] The first experimental video identification module 30 is configured to identify images contained in the experimental video in the primary-stage point explosion frame by frame, so as to determine whether splashes are generated in the primary-stage point explosion according to an identification result.

[0088] The primary-stage point explosion optimization module 40 is configured to, if the splashes are generated in the primary-stage point explosion, determine a component failure cause according to the splashes, and optimize a target component according to the component failure cause, so as to perform a secondary-stage point explosion on the safety airbag according to an optimization result, until no splashes are generated in the secondary-stage point explosion.

[0089] Further, the primary-stage point explosion optimization module 40 further comprises:

[0090] The splash identification unit is configured to, if the splashes are generated in the primary-stage point explosion, acquire a target image containing the splashes, and identify a fixed position of the splashes according to the target image.

[0091] The component optimization unit is configured to acquire the component failure cause according to the fixed position of the splashes, and optimize a structure and a material of an abnormal component according to the component failure cause.

[0092] The secondary-stage test arrangement unit is configured to statically place the body-in-white after optimization, install the safety airbag at a design fixed point position, install an acceleration sensor on the roof at a component where the splashes are located and a periphery thereof, generate a tear line around the failure component, measure a depth of the tear line, and determine whether the depth of the tear line meets a design value requirement.

[0093] The component arrangement unit is configured to, if the depth of the tear line meets the design value requirement, install the safety airbag at the design fixed point position according to an arrangement specification, and install the wire harness, the reading lamp, the handrail, the roof and the pillar trim to a design position.

[0094] The secondary-stage point explosion signal sending unit is configured to send a second electric signal to the safety airbag through the wire harness, so that the safety airbag performs a secondary-stage point explosion according to the second electric signal, and acquires an experimental video of the secondary-stage point explosion.

[0095] A splash identification unit is configured to determine whether splash is generated according to the experiment video of the advanced point explosion;

[0096] A data acquisition unit is configured to record the acceleration experiment value of the acceleration sensor if it is determined that no splash is generated according to the experiment video of the advanced point explosion;

[0097] A data processing unit is configured to calculate the acceleration value of the body-in-white according to the acceleration experiment value, and obtain the ignition time of the engine according to the acceleration value of the body-in-white.

[0098] Further, the component optimization unit further comprises:

[0099] A first optimization sub-unit is configured to perform structure optimization on the fixed point of failure, and optimize the lap joint mode of the fixed point of failure and increase the material strength attribute of the fixed point of failure if the component failure reason is that the splash is fixed on the body-in-white and the component fixed point fails.

[0100] A second optimization sub-unit is configured to optimize the fixed point structure, the lap joint mode and the material strength if the component failure reason is that the splash is fixed on the roof and the component fixed point fails.

[0101] A third optimization sub-unit is configured to optimize the component structure and the material strength if the component failure reason is that the splash is fixed on the roof and the component body fails.

[0102] Further, in some optional embodiments of the present application, the system further comprises:

[0103] A compensation module is configured to obtain the component mass and the acceleration sensor mass, to compensate the acceleration experiment value according to the component mass, the acceleration sensor mass and the acceleration experiment value, and to obtain the acceleration value of the body-in-white according to the compensation result.

[0104] The acceleration experiment value is compensated according to the following formula:

[0105] m1(a1+a2)=(m1+m2)a1

[0106] Wherein, m1 represents the component mass, m2 represents the acceleration sensor mass, a1 represents the acceleration generated when the airbag explodes, i.e. the acceleration experiment value, and a2 represents the acceleration generated by the body-in-white near the reading lamp when the real vehicle collides.

[0107] In summary, according to the safety air bag curtain point explosion test method for replacing the whole vehicle collision experiment provided by the present application, the specific component failure reason is confirmed through the setting of the initial stage point explosion process, and then the component structure is optimized accordingly, and in order to verify whether the optimized component structure is effective, a specific advanced point explosion test is set, and based on the establishment of the initial stage and advanced test test method and system, it is beneficial to assist the test personnel to quickly identify the failure problem, and to implement effective optimization and verification on the failure problem, without the need for the test personnel to be experienced, and greatly saving the component test resources and the whole vehicle collision test resources.

[0108] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0109] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that, for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A safety air bag curtain point explosion test method for replacing a whole vehicle collision experiment, characterized by, The method comprises: acquiring a target vehicle model to be tested, and acquiring a layout specification of the target vehicle according to the target vehicle model, so as to install a safety airbag, a roof, a pillar trim, a reading lamp, a wire harness and a handrail on a body-in-white of the target vehicle respectively according to the layout specification; sending a first electric signal to the safety airbag through the wire harness, so that the safety airbag performs a primary point explosion according to the first electric signal, and acquiring an experimental video of the primary point explosion; frame-by-frame identifying images contained in the experimental video in the primary point explosion, so as to determine whether splashes are generated in the primary point explosion according to an identification result; if splashes are generated in the primary point explosion, determining a component failure cause according to the splashes, and optimizing a target component according to the component failure cause, so as to perform a secondary point explosion on the safety airbag according to an optimization result, until no splashes are generated in the secondary point explosion; if splashes are generated in the primary point explosion, acquiring a target image containing the splashes, and identifying a fixed position of the splashes according to the target image; determining a component failure cause according to the fixed position of the splashes, and optimizing a structure and a material of an abnormal component according to the component failure cause; if the component failure cause is that the splashes are fixed on the body-in-white, and a component fixed point is failed, optimizing a structure of the failed fixed point, and optimizing a lapping mode of the failed fixed point, while increasing a material strength attribute of the failed fixed point; if the component failure cause is that the splashes are fixed on the roof, and a component fixed point is failed, optimizing a fixed point structure, a lapping mode and a material strength; if the component failure cause is that the splashes are fixed on the roof, and a component body is failed, optimizing a component structure and a material strength thereof. after the step of determining the component failure cause according to the fixed position of the splashes, and optimizing the structure and the material of the abnormal component according to the component failure cause, the method further comprises: placing the body-in-white after optimization statically, installing the safety airbag at a design fixed point, installing an acceleration sensor at the component where the splashes are located and a periphery thereof on the roof, generating a tear line around the failed component, measuring a depth of the tear line, and determining whether the depth of the tear line meets a design value requirement; 2. The safety airbag cushion inflator burst test method for replacing a whole vehicle crash test according to claim 1, wherein if the depth of the tear line meets the design value requirement, installing the safety airbag at the design fixed point according to the layout specification, and installing the wire harness, the reading lamp, the handrail, the roof and the pillar trim to design positions. ​ ​ 3. The safety airbag cushion inflator burst test method for replacing a whole vehicle crash test according to claim 2, wherein If the depth of the tear line meets the design value requirement, then after the step of installing the wiring harness, reading light, armrest, ceiling, and column trim to the design position according to the arrangement specification, the method further comprises: sending a second electrical signal to the safety curtain through the wiring harness to make the safety curtain carry out an advanced point explosion according to the second electrical signal, and obtaining an experimental video of the advanced point explosion; judging whether there is splashing according to the experimental video of the advanced point explosion; if there is no splashing according to the experimental video of the advanced point explosion, recording an acceleration experimental value of the acceleration sensor this time; calculating an acceleration value of the body-in-white according to the acceleration experimental value, and obtaining an ignition time of the engine according to the acceleration value of the body-in-white.

4. The safety airbag cushion inflator burst test method for replacing a whole vehicle crash test according to claim 3, wherein The step of calculating the acceleration value of the body-in-white according to the acceleration experimental value, and obtaining the ignition time of the engine according to the acceleration value of the body-in-white comprises: obtaining the mass of the component and the mass of the acceleration sensor to compensate the acceleration experimental value according to the mass of the component, the mass of the acceleration sensor, and the acceleration experimental value, and obtaining the acceleration value of the body-in-white according to the compensation result.

5. The safety airbag cushion inflator burst test method for replacing a whole vehicle crash test according to claim 4, wherein The step of compensating the acceleration value of the body-in-white according to the mass of the component, the mass of the acceleration sensor, and the acceleration experimental value comprises: compensating the acceleration experimental value according to the following formula: wherein m1 represents the mass of the component, m2 represents the mass of the acceleration sensor, a1 represents the acceleration generated when the airbag explodes, i.e. the acceleration experimental value, and a2 represents the acceleration generated at the body-in-white near the reading light when the real vehicle collides.

6. A safety airbag curtain point explosion test system for replacing a whole vehicle collision experiment, characterized by, The system comprises: an arrangement specification obtaining module, configured to obtain a target vehicle to be tested, and obtain an arrangement specification of the target vehicle according to the target vehicle, so as to install the safety curtain, the ceiling, the column trim, the reading light, the wiring harness, and the armrest on the body-in-white of the target vehicle according to the arrangement specification; a primary point explosion executing module, configured to send a first electrical signal to the safety curtain through the wiring harness to make the safety curtain carry out a primary point explosion according to the first electrical signal, and obtain an experimental video of the primary point explosion; a first experimental video identifying module, configured to identify images contained in the experimental video in the primary point explosion frame by frame to judge whether splashing is generated in the process of the primary point explosion according to the identification result; a primary point explosion optimizing module, configured to if splashing is generated in the process of the primary point explosion, determine a component failure cause according to the splashing, and optimize the target component according to the component failure cause, so as to carry out an advanced point explosion on the safety curtain according to the optimization result until no splashing is generated in the process of the advanced point explosion; the primary point explosion optimizing module further comprises: a splashing identifying unit, configured to if splashing is generated in the process of the primary point explosion, obtain a target image containing the splashing, and identify a fixed position of the splashing according to the target image. The part optimization unit is configured to obtain a part failure cause according to the fixed position of the splash, and to perform structure and material optimization on an abnormal part according to the part failure cause. The part optimization unit further comprises: A first optimization sub-unit is configured to, if the part failure cause is that the splash is fixed on the body-in-white and a part fixing point fails, perform structure optimization on the failed fixing point, perform optimization on the overlapping mode of the failed fixing point, and increase the material strength attribute of the failed fixing point. A second optimization sub-unit is configured to, if the part failure cause is that the splash is fixed on the roof and a part fixing point fails, optimize the fixing point structure, the overlapping mode, and the material strength. A third optimization sub-unit is configured to, if the part failure cause is that the splash is fixed on the roof and a part body fails, optimize the part structure and the material strength thereof.

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