Buffer block service life monitoring method and device, vehicle and storage medium

Abstract

The invention provides a buffer block service life monitoring method and device, a vehicle and a storage medium, and the method comprises the steps: determining a first strain value corresponding to an elastic element through a strain sensor when the vehicle is in a driving state, and enabling the strain sensor to be installed on the elastic element; determining a second strain value corresponding to the buffer block according to the first strain value and a material constitutive parameter of the buffer block; and determining the service life of the buffer block according to the second strain value. By means of the service life monitoring method and device, the service life of the buffer block can be monitored, the problem that the driving comfort and safety are reduced due to the fact that the buffer block reaches the service life limit is solved, and the driving comfort and safety are improved.

Description

Technical Field

[0001] The present application relates to the field of vehicles, and in particular to a buffer block life monitoring method, device, vehicle and storage medium. Background Art

[0002] The shock absorber assembly is an essential part to ensure the driving comfort of the vehicle. Buffer blocks are widely used in the shock absorber assembly. By installing buffer blocks, the impact of road bumps on the vehicle body can be reduced, improving driving comfort while protecting other components in the shock absorber assembly (such as elastic elements and shock absorbers) from overload.

[0003] However, the buffer block has a certain service life. If the buffer block reaches the life limit, the buffer block will break, resulting in a decrease in driving comfort and safety. Summary of the Invention

[0004] The embodiments of the present application provide a buffer block life monitoring method, device, vehicle and storage medium to solve the problem of reduced driving comfort and safety due to the buffer block reaching its life limit.

[0005] In a first aspect, an embodiment of the present application provides a buffer block life monitoring method, which is applied to a vehicle, wherein the vehicle includes a shock absorber assembly, the shock absorber assembly includes a shock absorber, a buffer block and an elastic element, the buffer block is connected to the shock absorber, and the elastic element is mounted on the periphery of the shock absorber, the method comprising: when the vehicle is in a driving state, using a strain sensor to determine a first strain value corresponding to the elastic element, the strain sensor being mounted on the elastic element; determining a second strain value corresponding to the buffer block based on the first strain value and the material constitutive parameters of the buffer block; and determining the service life of the buffer block based on the second strain value.

[0006] In some embodiments, the use of a strain sensor to determine the first strain value corresponding to the elastic element includes: determining the resistance change of the strain sensor when deformation of the elastic element is detected; and determining the strain value corresponding to the resistance change based on the initial resistance and sensitivity coefficient of the strain sensor as the first strain value corresponding to the elastic element.

[0007] In some embodiments, the method for determining the material constitutive parameters includes: determining the mechanical response data of the buffer block based on a preset mechanical test; and determining the material constitutive parameters of the buffer block according to the mechanical response data using a preset strain energy model.

[0008] In some embodiments, determining the second strain value corresponding to the buffer block based on the first strain value and the material constitutive parameters of the buffer block includes: determining the deformation distance of the buffer block based on the first strain value; and determining the second strain value of the buffer block based on the deformation distance and the material constitutive parameters.

[0009] In some embodiments, determining the deformation distance of the buffer block based on the first strain value includes: determining the elastic modulus of the elastic element and the gap information between the shock absorber and the buffer block; determining the deformation distance of the buffer block based on the elastic modulus, the gap information and the first strain value.

[0010] In some embodiments, determining the service life of the buffer block based on the second strain value includes: determining the service life corresponding to the second strain value based on a preset correspondence between the strain value and the service life.

[0011] In some embodiments, the method further includes: outputting a warning prompt if the service life is greater than or equal to a life threshold.

[0012] In a second aspect, an embodiment of the present application provides a buffer block life monitoring device, which is applied to a vehicle, wherein the vehicle includes a shock absorber assembly, the shock absorber assembly includes a shock absorber, a buffer block and an elastic element, the buffer block is connected to the shock absorber, and the elastic element is mounted on the periphery of the shock absorber, the device including: a first strain determination module, which is used to determine a first strain value corresponding to the elastic element based on a strain sensor when the vehicle is traveling, the strain sensor being installed on the elastic element; a second strain determination module, which is used to determine a second strain value corresponding to the buffer block based on the first strain value and the material constitutive parameters of the buffer block; and a service life determination module, which is used to determine the service life of the buffer block based on the second strain value.

[0013] In a third aspect, an embodiment of the present application provides a vehicle, comprising a processor and a memory, wherein the processor is configured to implement a buffer block life monitoring method as described above when executing a computer program stored in the memory.

[0014] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor of a vehicle, the buffer block life monitoring method as described in any one of the above items is implemented.

[0015] In the buffer block life monitoring method provided in an embodiment of the present application, when the vehicle is traveling, a strain sensor is used to determine the first strain value corresponding to the elastic element, and the strain sensor is installed on the elastic element; based on the first strain value and the material constitutive parameters of the buffer block, the second strain value corresponding to the buffer block is determined; based on the second strain value, the service life of the buffer block is determined. By using the present application, the second strain value of the buffer block is determined based on the first strain value of the elastic element in the shock absorber assembly and the material constitutive parameters of the buffer block, so that the loading condition of the buffer block can be monitored. And the present application determines the service life of the buffer block based on the second strain value. By monitoring the service life of the buffer block, the problem of reduced driving comfort and safety due to the buffer block reaching its life limit can be avoided, thereby improving driving comfort and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a device diagram of a buffer block life monitoring method provided in an embodiment of the present application.

[0017] Figure 2 It is a structural schematic diagram of the shock absorber assembly provided in an embodiment of the present application.

[0018] Figure 3 This is an application scenario diagram of the buffer block life monitoring method provided in the first embodiment of the present application.

[0019] Figure 4 This is an application scenario diagram of the buffer block life monitoring method provided in the second embodiment of the present application.

[0020] Figure 5 This is a flow chart of a buffer block life monitoring method provided in an embodiment of the present application.

[0021] Figure 6 3 is a flow chart of a method for determining a first strain value provided in an embodiment of the present application.

[0022] Figure 7 3 is a flow chart of a second strain value determination method provided in an embodiment of the present application.

[0023] Figure 8 This is a structural diagram of a buffer block life monitoring device provided in an embodiment of the present application.

[0024] Component Symbol Description: Vehicle 10, shock absorber assembly 101, mounting support assembly 1011, shock absorber 1012, cylinder 1012a, piston rod 1012b, end cover 1012c, buffer block 1013, elastic element 1014, strain sensor 1014a, dust cover 1015, processor 102, communication module 103, memory 104, input / output (I / O) interface 105, bus 106, wheel 107, connecting shaft joint 108, life alarm 109, buffer block life monitoring device 20, first strain determination module 201, second strain determination module 202, service life determination module 203, cloud computing platform 30, strain calculator 31, life calculator 32. DETAILED DESCRIPTION

[0025] It should be noted that the terms "first" and "second" in the description, claims and drawings of this application are used to distinguish similar objects, rather than to describe a specific order or sequence.

[0026] In the embodiments of the present application, words such as "exemplarily" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present related concepts in a concrete manner. The following embodiments and features in the embodiments may be combined with each other unless there is a conflict.

[0027] Shock absorber assemblies are essential components for ensuring a comfortable ride, and buffer blocks are widely used within them. These blocks typically consist of a foam material, such as polyurethane, which provides excellent vibration absorption. Installing buffer blocks reduces the impact of road bumps on the vehicle body, improving ride comfort while also protecting other components of the shock absorber assembly (such as the spring element and shock absorber) from overload.

[0028] To protect the bumper from corrosion and external impacts, a dust cover is typically installed on the bumper. However, bumpers have a limited service life and, at the end of their lifespan, they may crack. Because the bumper has a dust cover, cracks are not visible to the naked eye or to the passengers' senses, making it difficult to replace them in a timely manner. This can result in reduced ride comfort and safety.

[0029] In view of the above problems, an embodiment of the present application provides a buffer block life monitoring method, device, vehicle and storage medium, the method comprising: when the vehicle is in a driving state, using a strain sensor to determine a first strain value corresponding to the elastic element, the strain sensor being installed on the elastic element; based on the first strain value and the material constitutive parameters of the buffer block, determining a second strain value corresponding to the buffer block; based on the second strain value, determining the service life of the buffer block.

[0030] In the buffer block life monitoring method provided in an embodiment of the present application, a second strain value of the buffer block is determined based on the first strain value of the elastic element in the shock absorber assembly and the material constitutive parameters of the buffer block, thereby enabling monitoring of the buffer block's loading. Furthermore, the present application determines the buffer block's service life based on the second strain value. By monitoring the buffer block's service life, the problem of reduced driving comfort and safety due to the buffer block reaching its life limit can be avoided, thereby improving driving comfort and safety.

[0031] The following will describe some embodiments with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0032] Combine Figure 1 A diagram illustrating a method for monitoring the life of a buffer block provided in an embodiment of the present application. The method for monitoring the life of a buffer block can be applied to a vehicle 10, which can include a hybrid vehicle, a pure fuel vehicle, and a pure electric vehicle, without limitation. Figure 1 As shown, the vehicle 10 includes a shock absorber assembly 101, a processor 102, a communication module 103, a memory 104, an input / output (I / O) interface 105, and a bus 106. The processor 102 is coupled to the shock absorber assembly 101, the communication module 103, the memory 104, and the input / output interface 105 via the bus 106.

[0033] In some embodiments, the shock absorber assembly 101 attenuates vibrations through hydraulic damping, absorbs road impacts, and improves the driving stability and comfort of the vehicle 10. Figure 2 The structure of the shock absorber assembly provided in the embodiment of the present application is described. Figure 2As shown, the shock absorber assembly 101 includes a mounting bracket assembly 1011, a shock absorber 1012, a buffer block 1013, and an elastic element 1014. The mounting bracket assembly 1011 is secured to the body of the vehicle 10. The shock absorber 1012 is secured to the connecting shaft. The coordinated operation of the shock absorber 1012, the elastic element 1014, and the buffer block 1013 is the core mechanism for achieving efficient shock absorption. Through their complementary effects, the three elements balance the comfort and handling of the vehicle 10. When the wheel is impacted, the elastic element 1014 is compressed or stretched, converting kinetic energy into elastic potential energy. When the impact force dissipates, the elastic element 1014 releases the stored energy, pushing the wheel back to its original position. The shock absorber 1012 (such as a hydraulic shock absorber or a magnetorheological shock absorber) generates a damping force through internal fluid (oil, gas) or electromagnetic effects, converting the elastic potential energy released by the elastic element 1014 into heat energy and dissipating it, thereby suppressing vehicle body vibration. When the elastic element 1014 is compressed to the limit stroke, the buffer block 1013 intervenes as a safety barrier to protect other components in the shock absorber 1012 assembly (such as the elastic element 1014 and the shock absorber 1012) from overload.

[0034] In some embodiments, shock absorber 1012 includes a cylinder 1012a, a piston rod 1012b, and an end cap 1012c. One end of piston rod 1012b passes through and is fixed to mounting bracket assembly 1011, while the other end is fixed to cylinder 1012a. End cap 1012c is mounted on one end of cylinder 1012a. The other end of cylinder 1012a is fixed to a connecting shaft.

[0035] In some embodiments, the buffer block 1013 is connected to the shock absorber 1012. For example, the buffer block 1013 is sleeved on the piston rod 1012b and has a clearance fit with the piston rod 1012b. One end of the buffer block 1013 is connected to the mounting support assembly 1011, and the other end of the buffer block 1013 is connected to the end cap 1012c (the end cap 1012c is close to the end of the buffer block 1013, such as Figure 2 There is a gap at the left end of the middle cover 1012c.

[0036] In some embodiments, the elastic element 1014 is mounted on the periphery of the shock absorber 1012 and is compressed between the mounting support assembly 1011 and the cylinder 1012a. The elastic element 1014 may include a spring, such as a coil spring, an air spring, etc. In some embodiments, a strain sensor 1014a ( Figure 4 As shown in FIG, for example, a strain sensor 1014a is attached to the elastic element 1014. When the vehicle is in motion, the strain sensor 1014a can be used to determine the strain value corresponding to the elastic element 1014 (for ease of description, referred to herein as the "first strain value").

[0037] In some embodiments, the shock absorber assembly 101 further includes a dust cover 1015, which is mounted on the outside of the shock absorber 1012. One end of the dust cover 1015 is mounted on the mounting bracket assembly 1011, and the other end is rotatably connected to the end cap 1012c. The provision of the dust cover 1015 on the outside of the shock absorber 1012 protects the buffer block 1013 from corrosion or external impacts from stones. The dust cover 1015 may include a bellows.

[0038] In some embodiments, the processor 102 provides computing and control capabilities. For example, the processor 102 is configured to execute a computer program stored in the memory 104 to implement the above-mentioned buffer block life monitoring method.

[0039] In some embodiments, the communication module 103 may be a wired communication module and / or a wireless communication module.

[0040] In some embodiments, memory 104 may include one or more random access memories (RAMs) and one or more non-volatile memories (NVMs). Memory 104 is used to store one or more computer programs. The one or more computer programs are configured to be executed by processor 102. The one or more computer programs include multiple instructions that, when executed by processor 102, implement the bump stop life monitoring method performed on vehicle 10.

[0041] In some embodiments, the input / output interface 105 is used to provide a channel for user input or output. For example, the input / output interface 105 can be used to connect various input and output devices, such as a mouse, keyboard, touch device, display screen, etc., so that the user can enter information or visualize information.

[0042] In the vehicle 10 provided in the embodiment of the present application, a second strain value of the buffer block 1013 is determined based on the first strain value of the elastic element 1014 in the shock absorber assembly 101 and the material constitutive parameters of the buffer block 1013, enabling real-time monitoring of the loading of the buffer block 1013. Furthermore, the service life of the buffer block 1013 is determined based on the second strain value. By monitoring the service life of the buffer block 1013, the problem of reduced driving comfort and safety due to the buffer block 1013 reaching its service life limit can be avoided, thereby improving driving comfort and safety.

[0043] In some embodiments, the vehicle 10 can also be connected to the cloud computing platform 30 for communication, and the service life of the buffer block 1013 can be analyzed by exchanging information between the vehicle 10 and the cloud computing platform 30. Figure 3 and Figure 4The application scenario of the buffer block life monitoring method provided in the embodiment of the present application is described. Figure 3 This is an application scenario diagram of the buffer block life monitoring method provided by the first embodiment of the present application. Figure 4 This is an application scenario diagram of the buffer block life monitoring method provided by the second embodiment of this application. Figure 3 As shown, the vehicle 10 is in communication connection with the cloud computing platform 30, and the communication connection may include wireless communication, which may include one or more combinations of communication methods such as Bluetooth communication, Wi-Fi communication, and Near Field Communication (NFC). Figure 4 As shown, vehicle 10 includes a shock absorber assembly 101, a wheel 107, and a connecting shaft 108, which connects wheel 107 and shock absorber assembly 101. Shock absorber assembly 101 is equipped with a strain sensor 1014a, which is connected to processor 102, and processor 102 is in communication with cloud computing platform 30.

[0044] In some embodiments, while the vehicle 10 is in motion, the strain sensor 1014a obtains a strain value corresponding to the elastic element 1014 (referred to herein as the "first strain value" for ease of description). The first strain value and the material constitutive parameters of the buffer block 1013 are transmitted to the cloud computing platform 30. The cloud computing platform 30 then determines the service life of the buffer block 1013 based on the first strain value and the material constitutive parameters of the buffer block 1013, and transmits the service life of the buffer block 1013 to the vehicle 10. Upon detecting that the service life of the buffer block 1013 is greater than or equal to a life threshold, the vehicle 10 outputs a warning prompt, reminding the user that the buffer block 1013 needs to be replaced promptly.

[0045] In some embodiments, the cloud computing platform 30 is a digital service system built based on virtualization technology and a distributed computing architecture, providing computing resources, storage resources, applications, and other services via the internet. The cloud computing platform 30 includes a strain calculator 31 and a life calculator 32, which are sequentially coupled. The strain calculator 31 is used to calculate the strain value of the buffer block 1013 (referred to herein as the "second strain value" for ease of description) and transmit the corresponding second strain value of the buffer block 1013 to the life calculator 32. The life calculator 32 is used to determine the service life of the buffer block 1013 based on the second strain value of the buffer block 1013. The service life can represent the actual usage time of the buffer block 1013. The life calculator 32 is also used to transmit a life warning signal to the vehicle 10 when it detects that the service life of the buffer block 1013 is greater than or equal to a life threshold. The life warning signal indicates that the service life of the buffer block 1013 has reached the life threshold. The life threshold can be set based on actual needs and is not limited here.

[0046] In some embodiments, the vehicle 10 includes a life warning device 109, which is connected to the processor 102. After receiving the life warning signal transmitted by the cloud computing platform 30, the processor 102 in the vehicle 10 sends the life warning signal to the life warning device 109, which then outputs a warning prompt, reminding the user that the buffer block 1013 needs to be replaced in a timely manner.

[0047] In the application scenario provided in the embodiment of the present application, the vehicle 10 is communicatively connected to the cloud computing platform 30, and the service life of the buffer block 1013 in the vehicle 10 is determined using the cloud computing platform 30 based on the real-time data collected by the vehicle 10 (for example, the first strain value corresponding to the elastic element). This can give full play to the powerful computing, storage and data analysis capabilities of the cloud computing platform 30 and improve the effect of the life monitoring of the buffer block 1013.

[0048] Figure 5 is a flow chart of a buffer block life monitoring method provided by an embodiment of the present application, the buffer block life monitoring method is applied to a vehicle (for example, Figure 1 Vehicle 10 in FIG. Figure 5 As shown, the buffer block life monitoring method may include the following steps. According to different requirements, the order of the steps in the flowchart can be changed, and some steps can be omitted.

[0049] S11 , when the vehicle is in a driving state, using a strain sensor to determine a first strain value corresponding to the elastic element.

[0050] In some embodiments, when the vehicle is in motion, when the vehicle runs over or hits an unexpected obstacle, or when driving on an uneven road surface, the elastic element will undergo elastic deformation due to the action of the instantaneous impact load, absorb and disperse kinetic energy through its own deformation, thereby effectively slowing down the impact force transmitted to the vehicle body, ensuring driving stability and passenger comfort.

[0051] In some embodiments, a strain sensor is installed on the elastic element. The strain sensor can measure the deformation degree of the elastic element by converting mechanical strain into an electrical signal based on the characteristic that the resistance value of the material changes significantly with deformation when subjected to force. The strain sensor may include a metal strain gauge or a semiconductor strain gauge, which is not limited here. Using the strain sensor, the first strain value of the elastic element when the vehicle is in a driving state can be determined in real time. Since the driving process of the vehicle is dynamic, the elastic deformation of the elastic element is also dynamic. In this way, the first strain value of the elastic element changes in real time. For example, in combination Figure 6 A flow chart illustrating a method for determining a first strain value provided in an embodiment of the present application is shown. Figure 6 As shown, a strain sensor is used to determine the first strain value corresponding to the elastic element, including: determining the resistance change of the strain sensor when deformation of the elastic element is detected; and determining the strain value corresponding to the resistance change based on the initial resistance and sensitivity coefficient of the strain sensor as the first strain value corresponding to the elastic element.

[0052] Among them, when the deformation of the elastic element is detected, the resistance of the strain sensor attached to the surface of the elastic element changes due to the deformation, and the resistance change can be determined based on the value monitored by the strain sensor. The sensitivity coefficient is a pre-set coefficient value, and the sensitivity coefficient can be determined according to the material and process of the strain sensor. The initial resistance of the strain sensor is known. In some embodiments, based on the initial resistance and sensitivity coefficient of the strain sensor, the strain value corresponding to the resistance change is determined, which can include: determining the product of the initial resistance of the strain sensor and the sensitivity coefficient, and determining the ratio of the resistance change to the product (that is, resistance change / (initial resistance)). Sensitivity coefficient)), the first strain value of the elastic element is obtained.

[0053] The embodiment of the present application can use the strain sensor to sense the slight deformation of the elastic element and determine the first strain value of the elastic element, which can improve the accuracy of determining the first strain value and thus improve the accuracy of life monitoring of the buffer block.

[0054] S12: Determine a second strain value corresponding to the buffer block according to the first strain value and the material constitutive parameters of the buffer block.

[0055] In some embodiments, the material constitutive parameters reflect the inherent characteristics of the buffer block and determine its response, such as deformation, failure, or energy dissipation, under load. The mechanical response data of the buffer block can be determined through a preset mechanical test, and the mechanical response data can be input into a strain energy model to obtain the material constitutive parameters of the buffer block. Exemplarily, a method for determining the material constitutive parameters includes: determining the mechanical response data of the buffer block based on a preset mechanical test; and determining the material constitutive parameters of the buffer block based on the mechanical response data using a preset strain energy model.

[0056] Among them, the preset mechanical tests may include at least one of uniaxial tensile test, uniaxial compression test, volume compression test and shear test. By performing the above mechanical tests on the buffer block, mechanical response data can be obtained. Among them, the uniaxial tensile test is used to obtain the relationship between the tensile stress and strain of the buffer block in the main direction by applying uniaxial tension to the buffer block. The uniaxial compression test is used to obtain the relationship between the compressive stress and strain of the buffer block in the main direction by applying uniaxial compression to the buffer block. The volume compression test is used to apply pressure to the buffer block and measure the volume change of the buffer block, so as to determine the incompressibility parameters of the buffer block. The shear test is used to apply a pure shear load to the buffer block and record the complex stress state of the buffer block. The implementation process of the above mechanical tests can refer to the relevant technology and will not be described here.

[0057] The strain energy model can refer to the following formula 1.

[0058] Formula 1: .

[0059] Where U represents strain energy, λ represents principal elongation, λ is equal to 1+ε, and ε represents strain tensor, which is used to describe the local or overall deformation degree of the buffer block during deformation. λ1, λ2 and λ3 represent principal elongation of the buffer block in different directions respectively. J represents volume ratio of the buffer block, J is equal to λ1 λ2 λ3. β is equal to ν / (1-2ν), where ν represents the Poisson's ratio, the ratio of the transverse strain to the longitudinal strain of the buffer under uniaxial tension or compression. μ and α represent the material constitutive parameters. μ controls the weight of the corresponding elastic modulus of the buffer, while α adjusts the strain softening / hardening properties.

[0060] The embodiment of the present application determines the mechanical response data of the buffer block through a preset mechanical test, and processes the mechanical response data using a preset strain energy model to obtain the material constitutive parameters of the buffer block. The mechanical test can directly reflect the actual response of the buffer block under real load, and can improve the accuracy of the determination of the material constitutive parameters.

[0061] In some embodiments, by analyzing the first strain value of the elastic element and the material constitutive parameters of the buffer block, the strain value corresponding to the buffer block can be obtained (for ease of description, referred to as the "second strain value" in this application). Figure 7 A flow chart illustrating a method for determining a second strain value provided in an embodiment of the present application is shown in FIG. Figure 7 As shown, based on the first strain value and the material constitutive parameters of the buffer block, the second strain value corresponding to the buffer block is determined, including: determining the deformation distance of the buffer block based on the first strain value; determining the second strain value of the buffer block based on the deformation distance and the material constitutive parameters.

[0062] The deformation distance of the buffer block can represent the length of the compressed buffer block. The relationship between the deformation distance of the buffer block and the first strain value of the elastic element is preset. Through the above relationship, the deformation distance of the buffer block corresponding to the first strain value can be determined.

[0063] By analyzing the first strain value of the elastic element, the embodiments of the present application can determine the deformation distance of the buffer block during vehicle travel, thereby determining the second strain value of the buffer block based on the deformation distance and the material constitutive parameters. By analyzing the loading conditions (i.e., the deformation distance) of the buffer block under actual load, the accuracy of determining the corresponding second strain value of the buffer block can be improved. Furthermore, by analyzing the first strain value, which is easy to accurately measure, and converting it into the second strain value of the buffer block, which is difficult to directly measure, the present application monitors the service life of the buffer block, thereby avoiding the problem of reduced driving comfort and safety due to the buffer block reaching its life limit, thereby improving driving comfort and safety.

[0064] In some embodiments, the deformation distance of the buffer block is related to the deformation length of the elastic element and the gap information between the shock absorber and the buffer block. For example, the deformation distance of the buffer block is equal to the difference between the deformation length of the elastic element and the gap information. Based on this, determining the deformation distance of the buffer block based on the first strain value includes: determining the elastic modulus of the elastic element and the gap information between the shock absorber and the buffer block; and determining the deformation distance of the buffer block based on the elastic modulus, the gap information, and the first strain value.

[0065] The elastic modulus of an elastic element is a physical quantity that measures the ability of an elastic element to resist external forces within its elastic deformation range, and the elastic modulus is a predetermined value. The clearance information between the shock absorber and the buffer block may include the distance between the buffer block and the end of the shock absorber's end cap that is closest to the buffer block. Based on the elastic modulus of the elastic element and the first strain value, the deformation length of the elastic element can be determined. Based on the difference between the deformation length of the elastic element and the clearance information, the deformation distance of the buffer block can be determined. The deformation distance of the buffer block can be determined using the following formula 2.

[0066] Formula 2: .

[0067] in, represents the first strain value corresponding to the elastic element, represents the elastic modulus of the elastic element, Indicates the deformation length of the elastic element. Indicates the clearance information between the shock absorber and the buffer block under the design load. Indicates the deformation distance of the buffer block.

[0068] The embodiment of the present application determines the deformation length of the elastic element by determining the elastic modulus and the first strain value of the elastic element, and thus determines the deformation distance of the buffer block based on the deformation length and gap information of the elastic element, thereby improving the accuracy of the deformation distance determination.

[0069] S13: Determine the service life of the buffer block according to the second strain value.

[0070] In some embodiments, the service life may represent the actual usage time of the buffer block in real-world usage scenarios. Since the buffer block continuously accumulates damage based on the vehicle's driving conditions, the monitored service life of the buffer block gradually decreases. Exemplarily, determining the service life of the buffer block based on the second strain value includes: determining the service life corresponding to the second strain value based on a predetermined correspondence between strain value and service life.

[0071] A correspondence between the second strain value of the buffer block and the service life of the buffer block is pre-established, and by querying the correspondence, the service life of the buffer block corresponding to the second strain value can be determined. For example, the correspondence between the second strain value and the service life can be shown in the following formula 3.

[0072] Formula 3: Log(e)=ab Log(N).

[0073] Wherein, N represents the service life of the buffer block, e represents the second strain value of the buffer block, and a and b are pre-set coefficients.

[0074] The embodiment of the present application establishes a corresponding relationship between the second strain value of the buffer block and the service life of the buffer block, thereby being able to quickly and accurately determine the service life of the buffer block.

[0075] In some embodiments, after determining the service life of the buffer block, the method further includes: if the service life is greater than or equal to a life threshold, outputting a warning prompt. The life threshold can be set based on actual needs and is not limited herein. The warning prompt is used to prompt the user to replace the buffer block in a timely manner. In embodiments of the present application, when the service life of the buffer block is greater than or equal to the life threshold, a warning prompt is output, prompting the user to replace the buffer block in a timely manner, thereby avoiding the problem of reduced driving comfort and safety due to the buffer block reaching its life limit, thereby improving driving comfort and safety.

[0076] In the buffer block life monitoring method provided in an embodiment of the present application, a second strain value of the buffer block is determined based on the first strain value of the elastic element in the shock absorber assembly and the material constitutive parameters of the buffer block, thereby monitoring the buffer block's loading. Furthermore, the buffer block's service life is determined based on the second strain value. By monitoring the buffer block's service life, the problem of reduced driving comfort and safety due to the buffer block reaching its life limit can be avoided, thereby improving driving comfort and safety.

[0077] See also Figure 8 , Figure 8 is a schematic diagram of the structure of a buffer block life monitoring device provided in an embodiment of the present application. In some embodiments, the buffer block life monitoring device 20 may include multiple functional modules composed of computer program segments. The computer program of each program segment in the buffer block life monitoring device 20 may be stored in the memory of the vehicle 10 and executed by at least one processor to perform (see Figure 5 Description) Buffer block life monitoring function.

[0078] In some embodiments, the buffer block life monitoring device 20 can be divided into multiple functional modules based on their functions. These modules may include a first strain determination module 201, a second strain determination module 202, and a service life determination module 203. A module, as used herein, refers to a series of computer program segments that can be executed by at least one processor and perform a fixed function, stored in memory. The functions of each module in this embodiment will be described in detail in subsequent embodiments.

[0079] The first strain determination module 201 may be configured to determine a first strain value corresponding to the elastic element based on a strain sensor when the vehicle is traveling, wherein the strain sensor is mounted on the elastic element.

[0080] The second strain determination module 202 may be configured to determine a second strain value corresponding to the buffer block according to the first strain value and a material constitutive parameter of the buffer block.

[0081] The service life determination module 203 may be configured to determine the service life of the buffer block according to the second strain value.

[0082] In some embodiments, the first strain determination module 201 can also be used to determine the resistance change of the strain sensor when the elastic element is detected to be deformed; based on the initial resistance and sensitivity coefficient of the strain sensor, determine the strain value corresponding to the resistance change as the first strain value corresponding to the elastic element.

[0083] In some embodiments, the second strain determination module 202 can also be used to determine the mechanical response data of the buffer block based on a preset mechanical test; and determine the material constitutive parameters of the buffer block according to the mechanical response data using a preset strain energy model.

[0084] In some embodiments, the second strain determination module 202 may also be configured to determine a deformation distance of the buffer block based on the first strain value; and determine a second strain value of the buffer block based on the deformation distance and the material constitutive parameter.

[0085] In some embodiments, the second strain determination module 202 can also be used to determine the elastic modulus of the elastic element and the gap information between the shock absorber and the buffer block; and determine the deformation distance of the buffer block based on the elastic modulus, the gap information and the first strain value.

[0086] In some embodiments, the service life determination module 203 may also be configured to determine the service life corresponding to the second strain value according to a preset correspondence between the strain value and the service life.

[0087] In some embodiments, the service life determination module 203 may also be configured to output a warning prompt if the service life is greater than or equal to a service life threshold.

[0088] It can be understood that the buffer block life monitoring device 20 and the buffer block life monitoring method of the above-mentioned embodiment belong to the same inventive concept. The specific implementation method of each module of the buffer block life monitoring device 20 corresponds to the various steps of the buffer block life monitoring method in the above-mentioned embodiment, and this application will not go into details here.

[0089] The module division described above is a logical functional division, and other division methods may be used in actual implementation. In addition, the functional modules in the various embodiments of the present application can be integrated into the same processing unit, or each module can exist physically separately, or two or more modules can be integrated into the same unit. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of hardware plus software functional modules.

[0090] then Figure 1 Regarding the vehicle, the communication module 103 may include a wired communication module and / or a wireless communication module. The wired communication module may provide one or more wired communication solutions, such as a universal serial bus (USB) and a controller area network (CAN). The wireless communication module may provide one or more wireless communication solutions, such as wireless fidelity (Wi-Fi), Bluetooth (BT), mobile communication networks, frequency modulation (FM), near field communication (NFC), and infrared (IR).

[0091] In some embodiments, memory 104 may include one or more random access memories (RAMs) and one or more non-volatile memories (NVMs). RAMs can be directly read and written by processor 102 and can be used to store executable programs (e.g., machine instructions) for other running programs, as well as user and application data. RAMs may include static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), and the like.

[0092] In some embodiments, non-volatile memory may also store executable programs and user and application data, which may be pre-loaded into random access memory for direct reading and writing by processor 102. Non-volatile memory may include disk storage devices and flash memory.

[0093] In some embodiments, the processor 102 may include one or more processing units, for example: the processor 102 may include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), and / or a neural-network processing unit (NPU), etc. Among them, different processing units can be independent devices or integrated into one or more processors. It is understood that the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the vehicle 10. In other embodiments of the present application, the vehicle 10 may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or arrange the components differently. The illustrated components can be implemented in hardware, software, or a combination of software and hardware.

[0094] An embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored. The computer program includes program instructions. The method implemented when the program instructions are executed can refer to the methods in the above-mentioned embodiments of the present application.

[0095] The computer-readable storage medium may be the internal memory of the vehicle described in the above embodiments, such as the vehicle's hard drive or memory. The computer-readable storage medium may also be an external storage device of the vehicle, such as a plug-in hard drive, a smart media card (SMC), a secure digital (SD) card, a flash memory card, etc.

[0096] In some embodiments, the computer-readable storage medium may include a program storage area and a data storage area, wherein the program storage area may store an operating system, applications required for at least one function, etc.; the data storage area may store data created according to the use of the vehicle, etc.

[0097] The computer-readable storage medium may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function, etc.; the data storage area may store data created according to the use of the vehicle 10, etc.

[0098] The above-mentioned integrated unit implemented in the form of a software functional module can be stored in a computer-readable storage medium. The above-mentioned software functional module stored in a storage medium includes a number of instructions for causing a vehicle or a processor to execute parts of the methods of various embodiments of the present application.

[0099] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the module division is only a logical function division, and other division methods may be used in actual implementation.

[0100] Modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical units, and may be located in one place or distributed across multiple network elements. Some or all of these modules may be selected to achieve the objectives of this embodiment based on actual needs.

[0101] In addition, the functional modules in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional modules.

[0102] It is obvious to those skilled in the art that the present application is not limited to the details of the above-mentioned exemplary embodiments, and that the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present application. Any figure mark in the claims should not be regarded as limiting the claims involved. In addition, it is obvious that the word "including" does not exclude other units or, and the singular does not exclude the plural. Multiple units or devices stated in the specification may also be implemented by one unit or device through software or hardware. Words such as first, second, etc. are used to indicate names and do not indicate any particular order.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A buffer block life monitoring method, applied to a vehicle, characterized in that: The vehicle includes a shock absorber assembly, the shock absorber assembly includes a shock absorber, a buffer block and an elastic element, the buffer block is connected to the shock absorber, and the elastic element is sleeved around the shock absorber. The method includes: When the vehicle is in a driving state, a first strain value corresponding to the elastic element is determined using a strain sensor, wherein the strain sensor is installed on the elastic element; Determining a second strain value corresponding to the buffer block according to the first strain value and a material constitutive parameter of the buffer block; The service life of the buffer block is determined according to the second strain value.

2. The buffer block life monitoring method according to claim 1, characterized in that: The determining the first strain value corresponding to the elastic element by using the strain sensor includes: When deformation of the elastic element is detected, determining a resistance change of the strain sensor; According to the initial resistance and sensitivity coefficient of the strain sensor, a strain value corresponding to the resistance change is determined as a first strain value corresponding to the elastic element.

3. The buffer block life monitoring method according to claim 1, characterized in that: The method for determining the material constitutive parameters includes: Determining mechanical response data of the buffer block based on a preset mechanical test; The material constitutive parameters of the buffer block are determined according to the mechanical response data using a preset strain energy model.

4. The buffer block life monitoring method according to claim 1, characterized in that: The determining, based on the first strain value and the material constitutive parameter of the buffer block, a second strain value corresponding to the buffer block includes: determining a deformation distance of the buffer block according to the first strain value; A second strain value of the buffer block is determined according to the deformation distance and the material constitutive parameter.

5. The buffer block life monitoring method according to claim 4, characterized in that: The determining the deformation distance of the buffer block according to the first strain value includes: determining the elastic modulus of the elastic element and clearance information between the shock absorber and the buffer block; A deformation distance of the buffer block is determined according to the elastic modulus, the gap information, and the first strain value.

6. The buffer block life monitoring method according to claim 1, characterized in that: The determining the service life of the buffer block according to the second strain value includes: The service life corresponding to the second strain value is determined according to a preset correspondence between the strain value and the service life.

7. The buffer block life monitoring method according to claim 1, characterized in that: The method further comprises: If the service life is greater than or equal to the service life threshold, a warning prompt is output.

8. A buffer block life monitoring device, applied to a vehicle, characterized in that: The vehicle includes a shock absorber assembly, which includes a shock absorber, a buffer block and an elastic element, wherein the buffer block is connected to the shock absorber, and the elastic element is sleeved around the shock absorber. The device includes: a first strain determination module, configured to determine a first strain value corresponding to the elastic element based on a strain sensor when the vehicle is traveling, wherein the strain sensor is mounted on the elastic element; a second strain determination module, configured to determine a second strain value corresponding to the buffer block according to the first strain value and a material constitutive parameter of the buffer block; The service life determination module is used to determine the service life of the buffer block according to the second strain value.

9. A vehicle, characterized in that: The vehicle includes a processor and a memory, and the processor is configured to implement the buffer block life monitoring method according to any one of claims 1 to 7 when executing a computer program stored in the memory.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor of a vehicle, the method for monitoring the life of a buffer block according to any one of claims 1 to 7 is implemented.

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