A vehicle roll-over analysis method and related apparatus

Abstract

The application provides a vehicle spiral rolling analysis method and related equipment, and the method comprises the following steps: acquiring a first rotation angle of a target vehicle when the target vehicle leaves a slope; acquiring a rotation angular velocity of the target vehicle; determining a second rotation angle of the target vehicle based on the first rotation angle and the rotation angular velocity, wherein the second rotation angle is a rotation angle when the target vehicle lands; and determining rigid rolling state information of the target vehicle according to a first preset rolling angle and the second rotation angle. The first rotation angle of the target vehicle when the target vehicle leaves the slope and the rotation angular velocity of the vehicle are used to determine the second rotation angle when the target vehicle lands, and the rigid rolling state information of the target vehicle is determined according to the first preset rolling angle and the second rotation angle. The rolling condition of the vehicle can be simulated without actual testing, the test cost of the vehicle is reduced, the sample size of the test is enriched, and the analysis quality of the vehicle spiral rolling is improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle simulation technology, and in particular to a method and related equipment for analyzing vehicle rollover. Background Technology

[0002] Rollover accidents account for about 3% of all vehicle accidents, but the fatality rate for rollover accidents is as high as 30%. Therefore, analyzing the vehicle's rollover behavior during the vehicle testing phase and adjusting the vehicle based on the analysis results can improve the vehicle's stability and safety.

[0003] Current vehicle rollover analysis methods are typically based on actual vehicle rollover tests, which suffer from high testing costs, limited sample sizes, and incomplete results, thus impacting vehicle safety performance. Therefore, developing an efficient and low-cost vehicle rollover analysis method is a pressing issue. Summary of the Invention

[0004] This invention provides a vehicle rollover analysis method and related equipment to solve the problems that current vehicle rollover analysis is based on real vehicle rollover tests, which leads to high testing costs, limited sample size, incomplete test results, and affects vehicle safety performance.

[0005] In a first aspect, the present invention provides a method for analyzing vehicle rollover, comprising:

[0006] Obtain the first rotation angle of the target vehicle when it leaves the ramp;

[0007] Obtain the rotational angular velocity of the target vehicle;

[0008] The second rotation angle of the target vehicle is determined based on the first rotation angle and the rotation angular velocity, wherein the second rotation angle is the rotation angle of the target vehicle when it lands;

[0009] The rigid roll state information of the target vehicle is determined based on the first preset roll angle and the second rotation angle.

[0010] Optionally, obtaining the first rotation angle of the target vehicle when it leaves the ramp includes:

[0011] Obtain the width information of the target vehicle;

[0012] Obtain the inclination angle and height information of the ramp;

[0013] The first rotation angle of the target vehicle when it leaves the ramp is obtained based on the width information, the tilt angle information, and the height information.

[0014] Optionally, obtaining the rotational angular velocity of the target vehicle includes:

[0015] Obtain the initial speed information of the target vehicle, wherein the initial speed information is the instantaneous speed information of the target vehicle when it begins to climb the hill;

[0016] Obtain the exit speed information of the target vehicle, wherein the exit speed information is the instantaneous speed information of the target vehicle when it leaves the ramp;

[0017] The rotational angular velocity of the target vehicle is obtained based on the initial velocity information, the detachment velocity information, and the tilt angle.

[0018] Optionally, the vehicle rollover analysis method further includes:

[0019] In the event that the target vehicle undergoes a rigid rollover, the tire information of the target vehicle is acquired;

[0020] Based on the tire information of the target vehicle and the rigid rollover state information, the flexible rollover state information of the target vehicle is determined.

[0021] Optionally, the vehicle rollover analysis method further includes:

[0022] In the event that the target vehicle undergoes a flexible rollover, the deformation information of the target vehicle's roof is obtained;

[0023] The location information of occupant injury in the target vehicle is determined based on the roof deformation information.

[0024] Optionally, the vehicle rollover analysis method further includes:

[0025] Obtain the target occupant information of the target vehicle, wherein the target occupant information includes the location information and weight information of the target occupant;

[0026] The third rotation angle of the target vehicle is determined based on the target occupant information and the second rotation angle;

[0027] The passenger rollover status information of the target vehicle is determined based on the second preset rollover angle and the third rotation angle.

[0028] Optionally, the vehicle rollover analysis method further includes:

[0029] The activation status information of the safety devices associated with the occupant injury location is obtained based on the occupant injury location information;

[0030] The safety level of the target vehicle is determined based on the startup status information and the roof deformation information.

[0031] Secondly, the present invention also provides a vehicle rollover analysis device, comprising:

[0032] The first acquisition module is used to acquire the first rotation angle of the target vehicle when it leaves the ramp.

[0033] The second acquisition module is used to acquire the rotational angular velocity of the target vehicle;

[0034] The first determining module is used to determine the second rotation angle of the target vehicle based on the first rotation angle and the rotation angular velocity, wherein the second rotation angle is the rotation angle of the target vehicle when it lands;

[0035] The second determining module is used to determine the rigid roll state information of the target vehicle based on the preset roll angle and the second rotation angle.

[0036] Thirdly, the present invention also provides an electronic device, including a memory and a processor, wherein the processor is configured to execute a computer program stored in the memory to implement the steps of the vehicle spiral rollover analysis method as described in any of the first aspects above.

[0037] Fourthly, the present invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the vehicle spiral rollover analysis method as described in any of the first aspects above.

[0038] As can be seen from the above technical solutions, the present invention provides a vehicle spiral rollover analysis method and related equipment. The method includes: obtaining a first rotation angle of the target vehicle when it leaves the ramp; obtaining the rotational angular velocity of the target vehicle; determining a second rotation angle of the target vehicle based on the first rotation angle and the rotational angular velocity, wherein the second rotation angle is the rotation angle of the target vehicle when it lands; and determining the rigid rollover state information of the target vehicle according to a first preset rollover angle and the second rotation angle. Since current vehicle spiral rollover analysis is based on actual vehicle rollover tests, it suffers from high testing costs, limited sample sizes, incomplete test results, and impacts vehicle safety performance. However, the embodiments of this application determine the second rotation angle of the target vehicle when it lands by using the first rotation angle of the target vehicle when it leaves the ramp and the vehicle's rotational angular velocity. Based on the first preset rollover angle and the second rotation angle, the rigid rollover state information of the target vehicle is determined. This allows for the determination of the rigid rollover state of the target vehicle based on the first rotation angle and rotational angular velocity, simulating vehicle rollover without actual testing, reducing vehicle testing costs, enriching the sample size, and improving the analysis quality of vehicle spiral rollover. Attached Figure Description

[0039] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 A schematic flowchart illustrating a vehicle rollover analysis method provided in this application embodiment;

[0041] Figure 2 A schematic structural diagram of a vehicle rollover analysis device provided in this application embodiment;

[0042] Figure 3 A schematic structural diagram of an electronic device provided in an embodiment of this application;

[0043] Figure 4 This is a schematic structural diagram of a computer-readable storage medium provided in an embodiment of this application. Detailed Implementation

[0044] The embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described below do not represent all embodiments consistent with this application. They are merely examples of systems and methods consistent with some aspects of this application as detailed in the claims. In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can also be implemented in other ways, and the apparatus embodiments described below are merely exemplary.

[0045] like Figure 1 As shown in the figure, this application provides a method for analyzing vehicle rollover. The execution subject of this method can be a server or controller, etc., and the method includes:

[0046] Step S110: Obtain the first rotation angle of the target vehicle when it leaves the ramp.

[0047] For example, the first rotation angle can be obtained through the inertial sensor of the target vehicle.

[0048] Step S120: Obtain the rotational angular velocity of the target vehicle.

[0049] For example, the aforementioned rotational angular velocity is the rotational angular velocity generated by the target vehicle when climbing a slope, which can be obtained through the inertial sensor of the target vehicle.

[0050] Step S130: Determine the second rotation angle of the target vehicle based on the first rotation angle and the rotation angular velocity, wherein the second rotation angle is the rotation angle of the target vehicle when it lands.

[0051] For example, the time it takes for the target vehicle to leave the ramp and land can be obtained. Based on the time and the rotational angular velocity, the rotation angle of the target vehicle during the process from leaving the ramp to landing can be determined. Based on the rotation angle and the first rotation angle, the second rotation angle can be determined. The time taken off the ground can be determined based on the target vehicle's height when leaving the ramp, using the laws of free fall motion.

[0052] Step S140: Determine the rigid roll state information of the target vehicle based on the first preset roll angle and the second rotation angle.

[0053] For example, the aforementioned rigid rollover state information is information on whether the target vehicle will undergo rigid rollover, determined based on the second rotation angle obtained after the target vehicle has passed the ramp. The rigid rollover is a vehicle spiral rollover caused by a vehicle structure that does not deform with the target vehicle's driving state. The aforementioned first preset rollover angle can be 90°. If the aforementioned second rotation angle is greater than or equal to the aforementioned first preset rollover angle, it is determined that the target vehicle will undergo rigid rollover; otherwise, it is determined that the target vehicle will not undergo rigid rollover.

[0054] By determining the first rotation angle and rotational angular velocity of the target vehicle as it leaves the ramp, the second rotation angle upon landing is determined. Based on the first preset roll angle and the second rotation angle, the rigid roll state information of the target vehicle is determined. The rigid roll state of the target vehicle can be determined based on the first rotation angle and rotational angular velocity. The rollover situation of the vehicle can be simulated without actual testing, reducing vehicle testing costs, enriching the sample size of the test, and improving the analysis quality of vehicle spiral rollover.

[0055] According to some embodiments, obtaining the first rotation angle of the target vehicle when it leaves the ramp includes:

[0056] Obtain the width information of the target vehicle mentioned above;

[0057] Obtain the inclination angle and height information of the above-mentioned ramp;

[0058] Based on the aforementioned width information, tilt angle information, and height information, the first rotation angle of the target vehicle when it leaves the ramp is obtained.

[0059] For example, the target vehicle has a width of L, the ramp has an inclination angle of θ, and a height of H. When the target vehicle climbs the ramp in the form of a single-sided bridge, it can be done by:

[0060]

[0061] Determine the first rotation angle θ1 when the target vehicle leaves the ramp.

[0062] By determining the first rotation angle using the target vehicle's width information, the slope's tilt angle information, and the height information, the efficiency of vehicle spiral rollover analysis can be improved, the analysis difficulty reduced, the accuracy of the target vehicle's rigid rollover state information improved, and the analysis cost reduced.

[0063] According to some embodiments, obtaining the rotational angular velocity of the target vehicle includes:

[0064] Obtain the initial speed information of the target vehicle, wherein the initial speed information is the instantaneous speed information of the target vehicle when it begins to climb the hill;

[0065] Obtain the departure speed information of the target vehicle, wherein the departure speed information is the instantaneous speed information of the target vehicle when it leaves the slope.

[0066] The rotational angular velocity of the target vehicle is obtained based on the initial velocity information, the separation velocity information, and the tilt angle.

[0067] For example, the initial velocity information and the separation velocity information mentioned above can be obtained through a velocity sensor. This can be achieved through:

[0068]

[0069] Determine the rotational angular velocity of the target vehicle, where V0 is the initial velocity information mentioned above, and V1 is the exit velocity information mentioned above. This can be achieved through:

[0070]

[0071] Determine the second rotation angle mentioned above.

[0072] By obtaining the target vehicle's rotational angular velocity through initial velocity information, escape velocity information, and tilt angle, the second rotation angle of the target vehicle can be determined based on the target vehicle's free fall time and rotational angular velocity. This can improve the analysis efficiency of vehicle spiral rollover, reduce analysis difficulty, improve the accuracy of the target vehicle's rigid rollover state information, and reduce analysis costs.

[0073] According to some embodiments, the above-described vehicle rollover analysis method further includes:

[0074] In the event of a rigid rollover of the aforementioned target vehicle, obtain the tire information of the aforementioned target vehicle;

[0075] Based on the tire information and rigid rollover state information of the target vehicle, the flexible rollover state information of the target vehicle is determined.

[0076] For example, the aforementioned tire information includes at least one of the following: the number of tires on the target vehicle, tire pressure, tire tread pattern, and tire material. Based on this tire information, the tire's deformation capacity and its friction capability against the ground can be determined in the event of a rigid rollover of the target vehicle. Based on the tire's deformation capacity and its friction capability against the ground, the inhibitory or reinforcing effect of the tire on the rigid rollover of the target vehicle can be determined. Furthermore, combined with the rigid rollover state information, the flexible rollover state information of the target vehicle can be determined. The flexible rollover state information is determined during the rollover process using the tire information of the target vehicle, indicating whether the target vehicle will undergo a flexible rollover. This flexible rollover is a spiral rollover caused by the vehicle structure deforming with the target vehicle's driving state, resulting in a weakening or enhancement of rigid rollover.

[0077] During a vehicle's spiral roll, the tires come into contact with the ground, causing elastic deformation and generating elastic potential energy, which is then converted into kinetic energy, propelling the vehicle's spiral roll. The degree of tire deformation is significantly influenced by tire pressure and material information. Friction also exists between the tire and the ground, inhibiting the vehicle's spiral roll; this friction is greatly affected by the tire's material and tread pattern. Therefore, by combining the target vehicle's tire information with a flexible roll model built upon a rigid roll model, the accuracy of vehicle spiral roll simulation can be improved, enhancing the quality and efficiency of vehicle spiral roll analysis.

[0078] According to some embodiments, the above-described vehicle rollover analysis method further includes:

[0079] In the event of a flexible rollover of the aforementioned target vehicle, obtain information on the roof deformation of the target vehicle.

[0080] Based on the aforementioned roof deformation information, the location of occupant injuries in the target vehicle was determined.

[0081] For example, the aforementioned roof deformation information may include at least one of: roof deformation location information, deformation degree information, and deformation type information, wherein the deformation type information includes roof damage, roof inward deformation, roof outward deformation, etc. The occupant injury location information of the target vehicle can be determined based on the aforementioned roof deformation information. For example, the deformation location information can be used to determine that the deformation location is the occupant injury location. Deformation degree information and deformation type information can be obtained. For example, in the case of roof damage, the occupant location associated with the damage location can be determined as the occupant injury location information. For example, in the case of roof outward deformation, the occupant location associated with the deformation location can be determined not to be the occupant injury location. For example, in the case of roof inward deformation, the occupant injury location can be determined based on the deformation degree.

[0082] Based on the roof deformation information of the target vehicle, the location of occupant injury in the current rollover state can be determined. Based on the above occupant injury location, the safety protection devices of the target vehicle can be strengthened, thereby improving the practicality of vehicle rollover analysis.

[0083] According to some embodiments, the above-described vehicle rollover analysis method further includes:

[0084] Obtain the target occupant information of the aforementioned target vehicle, wherein the target occupant information includes the location information and weight information of the target occupant;

[0085] The third rotation angle of the target vehicle is determined based on the aforementioned target occupant information and the aforementioned second rotation angle.

[0086] The passenger rollover status information of the target vehicle is determined based on the second preset rollover angle and the aforementioned third rotation angle.

[0087] For example, based on the aforementioned target occupant information and the principle of free fall, the landing time required for the target vehicle in its current state relative to its empty state can be determined. The third rotation angle can be determined based on the landing time and the second rotation angle. The second preset roll angle is the angle at which the target vehicle overturns in its current state, and can be determined based on the aforementioned target occupant information, the target vehicle's weight, and the first preset roll angle. If the third rotation angle is greater than or equal to the second preset roll angle, it can be determined that the target vehicle will undergo a spiral roll, thereby determining the passenger-carrying rollover state of the target vehicle.

[0088] When the target vehicle is carrying occupants, the center of gravity of the target vehicle will change with the position and weight of the occupants, which will cause the rotation angle of the target vehicle to change when it leaves the ramp. By combining the target occupant information to determine the rollover state of the vehicle, the simulation degree of the target vehicle's spiral rollover can be improved. By analyzing the spiral rollover situation of the target vehicle with occupants inside, the analysis cost can be reduced, the analysis efficiency and quality can be improved, and the practicality of vehicle spiral rollover analysis can be enhanced.

[0089] According to some embodiments, the above-described vehicle rollover analysis method further includes:

[0090] Based on the above-mentioned occupant injury location information, obtain the activation status information of the safety devices associated with the above-mentioned occupant injury location;

[0091] The safety level of the target vehicle is determined based on the above-mentioned startup status information and roof deformation information.

[0092] For example, the aforementioned safety devices may include airbags, seat belts, etc. For instance, if the airbags do not deploy, the safety level of the target vehicle can be determined to be low; if the airbags deploy and the roof deforms outwards, the safety level of the target vehicle can be determined to be high; if the airbags deploy and the roof deforms inwards, the safety level of the target vehicle can be determined based on the degree of inward deformation of the roof and the protection range of the airbags. For example, the displacement information of the occupants can be determined based on the degree of seat belt contraction; in the case of outward roof deformation, the safety level of the target vehicle can be determined based on the degree of roof deformation; and in the case of roof damage, the secure fixation of the target vehicle can be determined based on the area of ​​damage.

[0093] Since safety devices provide safety protection for occupants in the event of a vehicle rollover, the activation status information of the Huqiu safety devices can be used to conduct practical tests on the vehicle's safety devices. The safety level of the target vehicle can be determined based on the activation status information of the safety devices and the roof deformation information, which can improve the richness of analytical indicators for vehicle rollover analysis and enhance the quality of analysis.

[0094] like Figure 2 As shown, Figure 2 This is a schematic structural diagram of a vehicle spiral rollover analysis device provided in an embodiment of this application.

[0095] This application provides a vehicle rollover analysis device 200, which includes:

[0096] The first acquisition module 201 is used to acquire the first rotation angle of the target vehicle when it leaves the ramp;

[0097] The second acquisition module 202 is used to acquire the rotational angular velocity of the target vehicle.

[0098] The first determining module 203 is used to determine the second rotation angle of the target vehicle based on the first rotation angle and the rotation angular velocity, wherein the second rotation angle is the rotation angle of the target vehicle when it lands.

[0099] The second determining module 204 is used to determine the rigid roll state information of the target vehicle based on the first preset roll angle and the second rotation angle.

[0100] A vehicle tumbling analysis device 200 can achieve Figure 1 The various processes implemented in the method embodiments are not described in detail here to avoid repetition.

[0101] Please see Figure 3 , Figure 3 This is a schematic structural diagram of an electronic device provided in an embodiment of this application.

[0102] This application provides an electronic device 300, including a memory 310, a processor 320, and a computer program 311 stored in the memory 310 and executable on the processor 320. When the processor 320 executes the computer program 311, it performs the following steps:

[0103] Obtain the first rotation angle of the target vehicle when it leaves the ramp;

[0104] Obtain the rotational angular velocity of the target vehicle.

[0105] The second rotation angle of the target vehicle is determined based on the first rotation angle and the rotation angular velocity, wherein the second rotation angle is the rotation angle of the target vehicle when it lands.

[0106] Based on the first preset roll angle and the aforementioned second rotation angle, the rigid roll state information of the target vehicle is determined.

[0107] In practical implementation, when the processor 320 executes the computer program 311, it can achieve... Figure 1 Any of the corresponding implementation methods in the embodiments.

[0108] Since the electronic device described in this embodiment is a device used to implement a device in the embodiments of this application, those skilled in the art can understand the specific implementation method and various variations of the electronic device in this embodiment based on the method described in the embodiments of this application. Therefore, how the electronic device implements the method in the embodiments of this application will not be described in detail here. Any device used by those skilled in the art to implement the method in the embodiments of this application falls within the scope of protection of this application.

[0109] like Figure 4 As shown, Figure 4 This is a schematic structural diagram of a computer-readable storage medium provided in an embodiment of this application.

[0110] This embodiment provides a computer-readable storage medium 400 on which a computer program 411 is stored. When the computer program 411 is executed by a processor, it performs the following steps:

[0111] Obtain the first rotation angle of the target vehicle when it leaves the ramp;

[0112] Obtain the rotational angular velocity of the target vehicle.

[0113] The second rotation angle of the target vehicle is determined based on the first rotation angle and the rotation angular velocity, wherein the second rotation angle is the rotation angle of the target vehicle when it lands.

[0114] Based on the first preset roll angle and the aforementioned second rotation angle, the rigid roll state information of the target vehicle is determined.

[0115] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0116] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0117] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0118] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0119] This application also provides a computer program product, which includes computer software instructions that, when executed on a processing device, cause the processing device to perform actions such as... Figure 1 The flowchart of the vehicle spiral rollover analysis method in the corresponding embodiment.

[0120] The aforementioned computer program product includes one or more computer instructions. When the aforementioned computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The aforementioned computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The aforementioned computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the aforementioned computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The aforementioned computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a server or data center that integrates one or more available media. The aforementioned available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state disks (SSDs)).

[0121] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0122] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between devices or units through some interfaces, and may be electrical, mechanical, or other forms.

[0123] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0124] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0125] If the aforementioned integrated units are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0126] In summary, the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A vehicle roll analysis method, characterized by, The method comprises: obtaining a first rotation angle of the target vehicle when the target vehicle leaves the slope; obtaining a rotation angular velocity of the target vehicle; determining a second rotation angle of the target vehicle based on the first rotation angle and the rotation angular velocity, wherein the second rotation angle is a rotation angle when the target vehicle lands; determining rigid rollover state information of the target vehicle according to a first preset rollover angle and the second rotation angle, wherein the rigid rollover state information is information about whether the target vehicle will rigidly roll according to the second rotation angle obtained after the target vehicle passes through the slope, and the rigid rollover is a vehicle spiral roll caused by a vehicle structure that does not deform with the driving state of the target vehicle.

2. The vehicle tumble analysis method of claim 1, wherein, The method comprises: obtaining width information of the target vehicle; obtaining inclination angle information and height information of the slope; obtaining the first rotation angle of the target vehicle when the target vehicle leaves the slope based on the width information, the inclination angle information and the height information.

3. The vehicle tumble analysis method of claim 2, wherein The method comprises: obtaining initial speed information of the target vehicle, wherein the initial speed information is instantaneous speed information when the target vehicle starts to climb the slope; obtaining disengagement speed information of the target vehicle, wherein the disengagement speed information is instantaneous speed information when the target vehicle leaves the slope; obtaining the rotation angular velocity of the target vehicle according to the initial speed information, the disengagement speed information and the inclination angle.

4. The vehicle tumble analysis method of claim 1, wherein The method further comprises: obtaining tire information of the target vehicle in the case of rigid rollover of the target vehicle; determining flexible rollover state information of the target vehicle based on the tire information of the target vehicle and the rigid rollover state information, wherein the flexible rollover state information is information about whether the target vehicle will flexibly roll according to the tire information of the target vehicle in the rolling process, and the flexible rollover is a vehicle spiral roll caused by a vehicle structure that deforms with the driving state of the target vehicle, and the rigid rollover is weakened or enhanced. The method further comprises:

5. The vehicle tumble analysis method of claim 4 wherein, obtaining roof deformation information of the target vehicle in the case of flexible rollover of the target vehicle; determining occupant injury position information of the target vehicle based on the roof deformation information. The method further comprises:

6. The vehicle tumble analysis method of claim 1, wherein obtaining target occupant information of the target vehicle, wherein the target occupant information comprises position information and weight information of a target occupant; determining a third rotation angle of the target vehicle according to the target occupant information and the second rotation angle; determining passenger rollover state information of the target vehicle based on a second preset rollover angle and the third rotation angle. The method further comprises:

7. The vehicle tumble analysis method according to claim 5, characterized by, obtaining activation state information of a safety device associated with the occupant injury position according to the occupant injury position information; determining a safety degree of the target vehicle based on the activation state information and the roof deformation information. The method comprises:

8. A vehicle roll analysis device characterized by comprising: a first obtaining module, configured to obtain a first rotation angle of a target vehicle when the target vehicle leaves a slope; a second obtaining module, configured to obtain a rotation angular velocity of the target vehicle; ​ a first determining module, configured to determine a second rotation angle of the target vehicle based on the first rotation angle and the rotation angular velocity, wherein the second rotation angle is a rotation angle of the target vehicle when the target vehicle lands; a second determining module, configured to determine rigid rollover state information of the target vehicle according to a first preset rollover angle and the second rotation angle; the rigid rollover state information is information about whether the target vehicle will undergo rigid rollover, which is determined according to the second rotation angle obtained after the target vehicle passes through the slope, wherein the rigid rollover is vehicle spiral rollover caused by a vehicle structure that does not deform with the driving state of the target vehicle.

9. An electronic device comprising a memory, a processor, characterized in that, The processor is configured to implement the steps of the vehicle spiral rollover analysis method according to any one of claims 1 to 7 when executing the computer program stored in the memory.

10. A computer readable storage medium having stored thereon a computer program, characterized in that: The computer program is configured to implement the steps of the vehicle spiral rollover analysis method according to any one of claims 1 to 7 when executed by the processor.

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