Automobile pedal detection method, system and equipment

Abstract

The invention is suitable for the technical field of pedal detection, and particularly relates to an automobile pedal detection method, system and equipment, and the automobile pedal detection method comprises the steps: responding to a first pressure application operation, and continuously obtaining first sound information; the first pressing operation refers to the action that first force is applied to the middle of the pedal to enable the pedal and the connecting rod to move at the stroke starting point until the pedal and the connecting rod reach the stroke ending point; analyzing according to the first sound information to obtain connecting rod detection information; in response to the second pressure application operation, continuously acquiring second sound information; wherein the second pressure applying operation refers to the action of applying the first applied force to the second applied force at the preset pressurization rate on the side part of the pedal after the pedal and the connecting rod reach the stroke end point; and analyzing according to the second sound information to obtain welding detection information. According to the method, through two times of pressure applying operation, the performance and quality performance of the automobile pedal in actual use are simulated, and the automobile pedal is effectively detected and evaluated.

Description

Technical Field

[0001] The present application belongs to the technical field of pedal detection, and in particular, relates to a method, system and device for detecting a vehicle pedal. Background Art

[0002] As a key component of the vehicle driving control system, the quality and reliability of the vehicle pedals are directly related to the safety and comfort of driving. During the driving process, the pedals need to frequently withstand various forces applied by the driver, and the welding points between the connecting rod and the pedals, as well as the connecting rod structure itself, are facing severe tests. Traditional methods of testing automobile pedals rely on manual visual inspection and simple physical measurements. Manual visual inspection can only detect surface defects, but it is difficult to detect deep-seated problems such as cracks inside connecting rods and internal defects in welds. Moreover, manual inspection is greatly affected by subjective factors, and the judgment standards of different inspectors vary, resulting in a lack of consistency and accuracy in the test results. Simple physical measurements, such as measuring the size with a caliper, can only verify whether the external dimensions of the pedal meet the standards, but cannot effectively evaluate its performance and quality in actual use. Summary of the invention

[0003] The embodiments of the present application provide a vehicle pedal detection method, system and device, which can solve the problem that the traditional vehicle pedal detection method cannot effectively evaluate its performance and quality in actual use.

[0004] In a first aspect, an embodiment of the present application provides a method for detecting a vehicle pedal, comprising: In response to a first pressure operation, continuously acquiring first sound information; wherein the first pressure operation refers to an action of applying a first force to the middle of the pedal so that the pedal and the connecting rod move at the starting point of the stroke until the pedal and the connecting rod reach the end point of the stroke, and the first sound information is used to reflect a first acoustic emission signal inside the connecting rod; Analyze the first sound information to obtain connecting rod detection information; wherein the connecting rod detection information is used to reflect the production quality of the connecting rod; In response to a second pressure operation, continuously acquiring second sound information; wherein the second pressure operation refers to an action of applying a second force from the first force at a preset pressure increase rate to the side of the pedal after the pedal and the connecting rod reach the end of the stroke, the second force is greater than the first force, and the second sound information is used to reflect a second acoustic emission signal at the welding point of the connecting rod and the pedal; The welding detection information is obtained by analyzing the second sound information; wherein the welding detection information is used to reflect the welding quality of the welding point between the connecting rod and the pedal.

[0005] The above technical solutions in the embodiments of the present application have at least the following technical effects: The automobile pedal detection method provided in the present application first responds to a first pressure operation of applying a first force to the middle of the pedal so that the pedal and the connecting rod move at the starting point of the stroke until the pedal and the connecting rod reach the end point of the stroke, and continuously obtains first sound information for reflecting a first acoustic emission signal inside the connecting rod; then, analysis is performed based on the first sound information to obtain connecting rod detection information for reflecting the production quality of the connecting rod; then, in response to a second pressure operation of applying an action from the first force to the second force at a preset boost rate on the side of the pedal after the pedal and the connecting rod reach the end point of the stroke, and continuously obtains second sound information for reflecting a second acoustic emission signal at a welding point between the connecting rod and the pedal; wherein the second force is greater than the first force; and analysis is performed based on the second sound information to obtain welding detection information for reflecting the welding quality of the welding point between the connecting rod and the pedal. This method uses two pressure operations to analyze the quality of the connecting rod and the welding point respectively, covering the key parts of the automobile pedal. At the same time, by collecting and evaluating the first acoustic emission signal inside the connecting rod and the second acoustic emission signal at the welding point between the pedal and the connecting rod, it can simulate the performance and quality of the automobile pedal in actual use, thereby effectively detecting and evaluating the automobile pedal.

[0006] In a possible implementation manner of the first aspect, the analyzing according to the first sound information to obtain the connecting rod detection information includes: Analyze the first sound information to obtain sound amplitude information and sound emission quantity information; wherein the sound amplitude information is used to reflect the sound amplitude corresponding to each of the first sound emission signals, and the sound emission quantity information is used to reflect the number of sound amplitudes reflected by the first sound emission signal inside the connecting rod that are greater than a preset amplitude and the growth of the number; The connecting rod detection information is obtained by analyzing the sound quantity information and the sound amplitude information.

[0007] In a possible implementation manner of the first aspect, the analyzing according to the sound quantity information and the sound amplitude information to obtain the connecting rod detection information includes: When the number reflected by the sound emission quantity information is 0, it is determined that the connecting rod is of good quality, and the good quality is confirmed as the connecting rod detection information.

[0008] In a possible implementation manner of the first aspect, the analyzing according to the sound quantity information and the sound amplitude information to obtain the connecting rod detection information further includes: When the number reflected by the sound emission quantity information is not 0, analyzing the sound emission quantity information to obtain a quantity growth sequence; wherein the quantity growth sequence is used to reflect the occurrence time sequence of each of the first acoustic emission signals greater than the preset amplitude; Analyze the quantity growth sequence to obtain first sequence information and quantity growth rate; wherein the first sequence information is used to reflect the time when the first acoustic emission signal in the first position in the quantity growth sequence appears, and the quantity growth rate is used to reflect the average growth rate of other first acoustic emission signals after the first acoustic emission signal in the quantity growth sequence appears; Analyze the first sequence bit information and the sound amplitude information to obtain first detection information; Analyze the quantity growth rate and the sound amplitude information to obtain second detection information; Connecting rod detection information is obtained by analyzing the first detection information and the second detection information.

[0009] In a possible implementation manner of the first aspect, the analyzing according to the first sequence bit information and the sound amplitude information to obtain the first detection information includes: Analyzing according to the first order bit to obtain a damage coefficient; wherein the damage coefficient is used to reflect the degree of influence of the internal crack of the connecting rod on the connecting rod; Analyzing the sound amplitude information corresponding to the first sequence bit to obtain a damage value; wherein the damage value is used to reflect the degree of the internal crack; The damage value is corrected by using the damage coefficient to obtain first detection information.

[0010] In a possible implementation manner of the first aspect, the analyzing according to the quantity growth rate and the sound amplitude information to obtain the second detection information includes: An expansion coefficient is obtained by analyzing the quantity growth rate; wherein the expansion coefficient is used to reflect the expansion trend of the internal crack when the connecting rod is under pressure; Analyze the average sound amplitude in the sound amplitude information during the quantity growth process to obtain an expansion energy value; wherein the expansion energy value is used to reflect the energy carried by the internal crack expansion; The expansion coefficient is used to correct the expansion energy value to obtain second detection information.

[0011] In a possible implementation manner of the first aspect, the analyzing the first detection information and the second detection information to obtain the connecting rod detection information includes: Performing a weighted summation on the first detection information and the second detection information to obtain a comprehensive evaluation value; Compare the comprehensive evaluation value with a preset evaluation threshold value, and if the comprehensive evaluation value is less than the preset evaluation threshold value, determine that the connecting rod is of qualified quality, and confirm the qualified quality as the connecting rod detection information; wherein, the qualified quality is used to indicate that there are defects inside the connecting rod but it does not affect normal use; If the comprehensive evaluation value is greater than or equal to the preset evaluation threshold, the connecting rod is determined to be of unqualified quality, and the unqualified quality is used as the connecting rod detection information; wherein, the unqualified quality is used to indicate that there are serious defects inside the connecting rod.

[0012] In a possible implementation manner of the first aspect, the analyzing according to the second sound information to obtain welding detection information includes: Analyze the second sound information to obtain a mutation rate; wherein the mutation rate is used to indicate the rate of change of the sound amplitude of the second acoustic emission signal during the process from the first force being loaded at the preset boost rate to the second force being loaded; When the mutation rate is less than a preset mutation threshold, it is determined that the welding is good, and the good welding is confirmed as welding detection information; When the mutation rate is greater than or equal to the preset mutation threshold, the welding is determined to be unqualified, and the welding unqualified is confirmed as the welding detection information.

[0013] In a second aspect, an embodiment of the present application provides a vehicle pedal detection system, comprising: A first response acquisition module, for continuously acquiring first sound information in response to a first pressure operation; wherein the first pressure operation refers to an action of applying a first force to the middle of the pedal so that the pedal and the connecting rod move at the starting point of the stroke until the pedal and the connecting rod reach the end point of the stroke, and the first sound information is used to reflect a first acoustic emission signal inside the connecting rod; a first analysis module, configured to analyze the first sound information to obtain connecting rod detection information; wherein the connecting rod detection information is used to reflect the production quality of the connecting rod; A second response acquisition module, for continuously acquiring second sound information in response to a second pressure operation; wherein the second pressure operation refers to an action of applying a second force from the first force at a preset pressure increase rate to the side of the pedal after the pedal and the connecting rod reach the end of the stroke, the second force is greater than the first force, and the second sound information is used to reflect a second acoustic emission signal at a welding point between the connecting rod and the pedal; The second analysis module is used to analyze the second sound information to obtain welding detection information; wherein the welding detection information is used to reflect the welding quality of the welding point between the connecting rod and the pedal.

[0014] In a third aspect, an embodiment of the present application provides a vehicle pedal detection device, comprising a pressure-applying device and a control device, wherein the control device is electrically connected to the pressure-applying device, and the control device comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any of the methods described in the first aspect when executing the computer program.

[0015] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method described in any one of the above-mentioned first aspects is implemented.

[0016] In a fifth aspect, an embodiment of the present application provides a computer program product. When the computer program product runs on a vehicle pedal detection device, the vehicle pedal detection device executes the vehicle pedal detection method described in any one of the above-mentioned first aspects.

[0017] It can be understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a flow chart of a vehicle pedal detection method provided in an embodiment of the present application; Figure 2 It is a schematic diagram of the implementation process of the automobile pedal detection method provided in the embodiment of the present application; Figure 3 is a structural schematic diagram of a vehicle pedal detection system provided in an embodiment of the present application; Figure 4 It is a structural schematic diagram of a control device of an automobile pedal detection device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0020] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0021] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0022] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0023] As used in the specification of this application and the appended claims, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting" depending on the context. Similarly, the phrase "if it is determined" or "if the described condition or event is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce the described condition or event is detected" or "in response to detecting the described condition or event" depending on the context.

[0024] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0025] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0026] As a key component of the vehicle driving control system, the quality and reliability of the vehicle pedals are directly related to the safety and comfort of driving. During the driving process, the pedals need to frequently withstand various forces applied by the driver, and the welding points between the connecting rod and the pedals, as well as the connecting rod structure itself, are facing severe tests. Traditional methods of testing automobile pedals rely on manual visual inspection and simple physical measurements. Manual visual inspection can only detect surface defects, but it is difficult to detect deep-seated problems such as cracks inside connecting rods and internal defects in welds. Moreover, manual inspection is greatly affected by subjective factors, and the judgment standards of different inspectors vary, resulting in a lack of consistency and accuracy in the test results. Simple physical measurements, such as measuring the size with a caliper, can only verify whether the external dimensions of the pedal meet the standards, but cannot effectively evaluate its performance and quality in actual use.

[0027] To solve the above problems, the embodiment of the present application provides a method, system and device for detecting a vehicle pedal. In the method, first, in response to the first pressure operation of applying a first force to the middle of the pedal so that the pedal and the connecting rod move at the starting point of the stroke until the pedal and the connecting rod reach the end of the stroke, the first sound information for reflecting the first acoustic emission signal inside the connecting rod is continuously obtained; then, according to the first sound information, analysis is performed to obtain the connecting rod detection information for reflecting the production quality of the connecting rod; then, in response to the second pressure operation of applying the action of loading from the first force to the second force at a preset boost rate on the side of the pedal after the pedal and the connecting rod reach the end of the stroke, the second sound information for reflecting the second acoustic emission signal of the welding point of the connecting rod and the pedal is continuously obtained; wherein, the second force is greater than the first force; according to the second sound information, analysis is performed to obtain the welding detection information for reflecting the welding quality of the welding point of the connecting rod and the pedal. This method uses two pressure operations to analyze the quality of the connecting rod and the welding point respectively, covering the key parts of the automobile pedal. At the same time, by collecting and evaluating the first acoustic emission signal inside the connecting rod and the second acoustic emission signal at the welding point between the pedal and the connecting rod, it can simulate the performance and quality of the automobile pedal in actual use, thereby effectively detecting and evaluating the automobile pedal.

[0028] The automobile pedal detection method provided in the embodiment of the present application can be applied to an automobile pedal detection device. At this time, the automobile pedal detection device is the executor of the automobile pedal detection method provided in the embodiment of the present application. The embodiment of the present application does not impose any restrictions on the specific type of the automobile pedal detection device.

[0029] For example, the automobile pedal detection device may include a pressure device and a control device, and the control device is electrically connected to the pressure device. The pressure device is used to apply pressure to the pedal surface of the automobile pedal. The pressure device may include a pressure component and a drive component, and the pressure component is connected to the power output end of the drive component. The pressure component is used to abut against different positions on the pedal surface. For example, the pressure component may be a component composed of two pressure rods, both of which are connected to the power output end of the drive component, one of which is used to apply pressure to the middle of the pedal, and the other is used to apply pressure to the side of the pedal; the pressure component may also be a transmission component capable of adjusting the contact position, such as a combination of a mechanical claw or a transmission rod and a pressure ball, etc., but not limited thereto. The pressure ball is a spherical structure or annular structure that abuts against the pedal surface, and the transmission rod is used to control the contact position between the pressure ball and the pedal. The drive component may be a hydraulic press, a motor, etc., but not limited thereto. The control device monitors and controls the entire pressure process.

[0030] For example, the control device can be a mobile phone, a tablet computer, a wearable device, an augmented reality (AR) / virtual reality (VR) device, a laptop computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), a desktop computer, a smart screen, a smart TV and other terminal devices, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, an Internet of Things terminal, a computer, a laptop computer, a handheld communication device, a handheld computing device, a satellite wireless device, a wireless modem card, a TV set top box (STB), a customer premises equipment (CPE) and / or other devices for communicating on a wireless system and a next-generation communication system, for example, a mobile terminal in a 5G network or a mobile terminal in a future evolved public land mobile network (PLMN).

[0031] In order to better understand the automobile pedal detection method provided in the embodiment of the present application, the specific implementation process of the automobile pedal detection method provided in the embodiment of the present application is exemplarily introduced below.

[0032] Figure 1 and Figure 2 A schematic flow chart of a vehicle pedal detection method provided in an embodiment of the present application is shown, and the vehicle pedal detection method includes: S100, in response to a first pressure operation, continuously acquiring first sound information; wherein the first pressure operation refers to an action of applying a first force to the middle of the pedal so that the pedal and the connecting rod move at the starting point of the stroke until the pedal and the connecting rod reach the end point of the stroke, and the first sound information is used to reflect the first acoustic emission signal inside the connecting rod.

[0033] It can be understood that when a first force is applied to the middle of the pedal to move the pedal and the connecting rod from the starting point to the end point of the stroke, if there are defects inside the connecting rod, such as cracks, stress concentration will occur during the force process, thereby triggering the acoustic emission phenomenon to form a first acoustic emission signal. The elastic wave generated by this acoustic emission will propagate in the form of a sound signal. The first sound information can be obtained through a highly sensitive acoustic emission sensor (such as a resonant acoustic emission sensor, a broadband acoustic emission sensor, etc.), which can accurately capture the sound signal converted from the elastic wave generated by the internal defects of the connecting rod. The acoustic emission sensor is to be closely installed at key positions on the surface of the connecting rod, such as areas of stress concentration and areas prone to cracks.

[0034] S200, analyzing the first sound information to obtain connecting rod detection information; wherein the connecting rod detection information is used to reflect the production quality of the connecting rod.

[0035] Exemplarily, the first sound information may be subjected to feature extraction, such as the frequency, amplitude, duration and other features of the first sound signal, and then abnormal features may be determined by these features, and the influence of the abnormal features on the quality of the connecting rod may be analyzed, thereby obtaining the connecting rod detection information; the first sound information may also be input into a learning model, and the learning model may then output the corresponding connecting rod detection information, etc., but is not limited thereto. The learning model is trained with multiple sets of training data, and each set of training data in the multiple sets of training data includes the first sound information and the connecting rod detection information.

[0036] In a possible implementation, in step S200, analyzing the first sound information to obtain connecting rod detection information includes: S210, analyzing the first sound information to obtain sound amplitude information and sound emission quantity information; wherein the sound amplitude information is used to reflect the sound amplitude corresponding to each first sound emission signal, and the sound emission quantity information is used to reflect the number of sound amplitudes reflected by the first sound emission signals inside the connecting rod that are greater than a preset amplitude and the growth of the number.

[0037] It can be understood that the preset amplitude is a preset sound amplitude value, which can be manually input by humans or obtained from a detection database, etc., but is not limited thereto. The detection database refers to a database containing preset amplitudes corresponding to different models of automobile pedals. These data can be obtained through laboratory experiments, on-site measurements and monitoring, and past experience. After obtaining, the collected data is sorted, classified and archived, useful information and rules are extracted, and the relevant data is saved in the database to form a detection database.

[0038] The sound amplitude of each received first acoustic emission signal is extracted separately to form the sound amplitude information. A preset amplitude is set as a reference standard, and the number of first acoustic emission signals with sound amplitudes greater than the preset amplitude is counted. At the same time, the growth and change of this number over time or during the pressure application process are observed, and the result is the sound emission quantity information. These first acoustic emission signals are emitted from different positions of the same internal crack. The sound emission quantity information reflects the frequency of large-amplitude acoustic emission signals generated inside the connecting rod. The more the number, the more areas that may have problems inside; the sound amplitude information reflects the energy of each acoustic emission event. The larger the amplitude, the more serious the defect that generates the acoustic emission may be.

[0039] S220, analyzing the sound quantity information and the sound amplitude information to obtain connecting rod detection information.

[0040] Exemplarily, it is possible to determine whether there is a defect inside the connecting rod based on the number of sound emission information. If there is a defect, a comprehensive evaluation can be performed by analyzing each first sound emission signal in the sound emission quantity information and the corresponding sound amplitude to obtain the connecting rod detection information; the sound emission quantity information and the sound amplitude information can also be input into a learning model, and the learning model outputs the corresponding connecting rod detection information, and so on, but is not limited to this.

[0041] With this arrangement, by separately analyzing the sound quantity information and the sound amplitude information and combining the two, it is possible to more comprehensively and deeply explore the information about the internal structure of the connecting rod contained in the first sound information. Compared with the analysis of single information, it greatly improves the accuracy and reliability of the judgment of the connecting rod production quality.

[0042] In a possible implementation, in step S220, the connecting rod detection information is obtained by analyzing the sound quantity information and the sound amplitude information, including: S221a, when the number reflected by the sound emission quantity information is 0, it is determined that the connecting rod is of good quality, and the good quality is confirmed as the connecting rod detection information.

[0043] It can be understood that if during the entire first pressure operation, the number of sound amplitudes greater than the preset amplitude in the first acoustic emission signal generated inside the connecting rod is 0, this means that under the current detection conditions, there are no defects inside the connecting rod that can produce a large-amplitude acoustic emission signal. According to the established judgment criteria, the quality of the connecting rod can be determined to be good.

[0044] In a possible implementation, in step S220, analyzing the sound quantity information and the sound amplitude information to obtain the connecting rod detection information further includes: S221b, when the number reflected by the sound emission quantity information is not 0, analyze the sound emission quantity information to obtain a quantity growth sequence; wherein the quantity growth sequence is used to reflect the occurrence time sequence of each first sound emission signal greater than a preset amplitude.

[0045] It can be understood that when the number in the acoustic emission quantity information is not 0, it means that there is a situation where a relatively large acoustic emission signal is generated inside the connecting rod. At this time, according to the order in which the first acoustic emission signal appears, the time when each signal greater than the preset amplitude appears is recorded to form a time series, which is the quantity growth sequence.

[0046] S222b, analyzing the quantity growth sequence to obtain first sequence bit information and quantity growth rate; wherein the first sequence bit information is used to reflect the time when the first acoustic emission signal in the quantity growth sequence appears, and the quantity growth rate is used to reflect the average growth rate of other first acoustic emission signals after the first acoustic emission signal in the quantity growth sequence appears.

[0047] It can be understood that the time when the first acoustic emission signal with a larger than preset amplitude appears is extracted from the quantity growth sequence, and this time is the first order bit information. It can reflect the earliest time when there may be a problem inside the connecting rod. The quantity growth rate is obtained by calculating the average growth rate of the number of subsequent first acoustic emission signals with a larger than preset amplitude after the first signal appears.

[0048] S223b, analyzing the first sequence bit information and the sound amplitude information to obtain first detection information.

[0049] It can be understood that the first-order bit information reflects the starting time of the defect, and combined with the sound amplitude information, that is, the amplitude of each acoustic emission signal, the severity and development trend of the internal defects of the connecting rod in the early stage can be comprehensively judged. For example, if the first-order bit information shows that the defect occurred earlier, and the sound amplitude in the sound amplitude information at the corresponding moment is larger, it means that the early defect is more serious and may have a greater impact on the quality of the connecting rod. Through the comprehensive analysis of these information, the first detection information can be obtained.

[0050] Exemplarily, the first-order bit can be analyzed to obtain the degree of influence of the internal crack of the connecting rod on the connecting rod, and the corresponding sound amplitude information can be analyzed to obtain the crack degree of the internal crack. Finally, the severity is adjusted according to the degree of influence to obtain the degree of influence that the internal crack may ultimately cause, which is the first detection information. The first-order bit information and the sound amplitude information can also be input into a learning model, and the learning model outputs the corresponding first detection information, and so on, but is not limited to this.

[0051] In a possible implementation, in step S223b, analyzing the first sequence bit information and the sound amplitude information to obtain the first detection information includes: S2231, analyzing according to the first order bit to obtain a damage coefficient; wherein the damage coefficient is used to reflect the degree of influence of the internal crack of the connecting rod on the connecting rod.

[0052] It can be understood that the earlier the appearance time reflected by the first-order bit, the more likely the internal cracks will start to become active at the initial stage of pressure application, and the longer the destructive effect on the connecting rod structure will be, the larger the corresponding damage coefficient will be; otherwise, the damage coefficient will be smaller. Exemplarily, by establishing a mathematical relationship or empirical model between the first-order bit and the damage coefficient, the damage coefficient can be calculated based on the first-order bit information to quantify the degree of influence of the internal cracks on the connecting rod; the first-order bit can also be matched in the detection database to obtain the corresponding damage coefficient, etc., but not limited to this. The detection database also includes the damage coefficients corresponding to different first-order bits.

[0053] S2232, analyzing the sound amplitude information corresponding to the first order bit to obtain a damage value; wherein the damage value is used to reflect the degree of the internal crack.

[0054] It can be understood that when the first sequence bit appears, the size of the sound amplitude in the corresponding sound amplitude information directly reflects the energy strength of the acoustic emission signal generated by the internal crack at this time. The larger the sound amplitude, the more violent the crack activity at that moment, and the higher the severity of the crack. Therefore, according to the size of the sound amplitude, a mathematical relationship or empirical model between the sound amplitude information and the damage value can be established in a similar way to obtaining the damage coefficient in step S2231, and the damage value can be calculated based on the sound amplitude information to quantify the severity of the internal crack; the corresponding damage value can also be obtained by matching the sound amplitude information in the detection database, and so on, but not limited to this. The detection database also includes damage values ​​corresponding to different sound amplitude information.

[0055] S2233, correct the damage value using the damage coefficient to obtain first detection information.

[0056] It can be understood that the first detection information = damage coefficient × damage value.

[0057] With this setting, by separately calculating the damage coefficient and damage value and combining the two for correction, it is possible to comprehensively evaluate the impact of early cracks inside the connecting rod on the quality of the connecting rod from the two dimensions of time and severity, providing more precise data support for subsequent accurate judgment of the overall quality of the connecting rod.

[0058] S224b, analyzing according to the quantity growth rate and the sound amplitude information to obtain second detection information.

[0059] It can be understood that the growth rate of the number reflects the growth rate of the acoustic emission signal with a large amplitude generated by the internal defects of the connecting rod. The faster the growth rate, the faster the defect may develop; the amplitude information reflects the energy of the acoustic emission signal. The greater the energy, the more serious the defect may be. Combining these two pieces of information, the quality of the connecting rod can be further evaluated from the two aspects of the dynamic changes and severity of the defect development, thereby obtaining the second detection information.

[0060] For example, by analyzing the quantity growth rate, the expansion trend of the internal defects of the connecting rod when it is under pressure can be obtained, and then the energy carried by the internal crack expansion can be obtained by analyzing the average sound amplitude during the quantity growth process in the sound amplitude information, and finally the expansion trend and energy can be comprehensively analyzed to obtain the second detection information; the quantity growth rate and sound amplitude information can also be input into the learning model, and the learning model outputs the corresponding second detection information, and so on, but not limited to this.

[0061] In a possible implementation, in step S224b, the second detection information is obtained by analyzing the quantity growth rate and the sound amplitude information, including: S2241, analyze based on the number growth rate to obtain the expansion coefficient; wherein the expansion coefficient is used to reflect the expansion trend of the internal crack when the connecting rod is under pressure.

[0062] It can be understood that the higher the number growth rate, the faster the frequency of the acoustic emission signal with a larger amplitude generated inside the connecting rod increases, which usually indicates that the internal crack is expanding, interacting with more areas, and causing more acoustic emission events. For example, by establishing a mathematical relationship or empirical model between the number growth rate and the expansion coefficient, the expansion coefficient can be calculated based on the number growth rate to quantify the expansion trend of the internal crack; the corresponding expansion coefficient can also be obtained by matching the number growth rate in the detection database, and so on, but not limited to this. The detection database also includes different number growth rates and corresponding expansion coefficients.

[0063] S2242, analyzing the average sound amplitude in the sound amplitude information during the quantity growth process to obtain an expansion energy value; wherein the expansion energy value is used to reflect the energy size carried by the internal crack expansion.

[0064] It can be understood that, during the growth of quantity, the average sound amplitude in the sound amplitude information represents the average energy level of the acoustic emission signal generated by the crack during this period of time. The larger the average sound amplitude, the more energy is released during the crack expansion process, and the stronger the destructive effect on the connecting rod structure. Exemplarily, a mathematical relationship or empirical model between the average sound amplitude and the expansion energy value can be established, and the expansion energy value can be calculated based on the average sound amplitude to quantify the energy carried by the internal crack expansion; the average sound amplitude can also be matched in the detection database to obtain the corresponding expansion energy value, and so on, but not limited to this. The detection database also includes different average sound amplitudes and corresponding expansion energy values.

[0065] S2243, correct the expansion energy value using the expansion coefficient to obtain second detection information.

[0066] It can be understood that the second detection information = expansion coefficient × expansion energy value.

[0067] With this setting, by separately calculating the expansion coefficient and the expansion energy value and combining the two for correction, it is possible to more comprehensively and deeply evaluate the quality status of the connecting rod during the compression process from the two aspects of crack expansion trend and energy, providing richer and more accurate data support for judging the overall quality of the connecting rod.

[0068] S225b, analyzing the first detection information and the second detection information to obtain connecting rod detection information.

[0069] It can be understood that the first detection information mainly reflects the condition of early cracks inside the connecting rod, and the second detection information focuses on the development and change of cracks in the connecting rod during compression. Combining these two pieces of information and using specific analysis methods, such as weighted average and comprehensive evaluation models, can comprehensively consider the quality changes of the connecting rod from the initial state to the compression process, thereby obtaining more accurate connecting rod detection information that can better reflect the overall production quality of the connecting rod.

[0070] With this arrangement, the first detection information and the second detection information are analyzed comprehensively, avoiding the limitation of judging the quality of the connecting rod based on a single stage or a single factor, fully considering the performance of the connecting rod quality at different stages and aspects, and significantly improving the comprehensiveness and accuracy of the judgment on the connecting rod production quality.

[0071] In a possible implementation, in step S225b, analyzing the first detection information and the second detection information to obtain connecting rod detection information includes: S2251, performing weighted summation on the first detection information and the second detection information to obtain a comprehensive evaluation value.

[0072] It can be understood that the weights of the first detection information and the second detection information can be manually input or obtained from a detection database, etc., but is not limited thereto.

[0073] S2252a, compare the comprehensive evaluation value with the preset evaluation threshold. If the comprehensive evaluation value is less than the preset evaluation threshold, the connecting rod is judged to be of qualified quality, and the qualified quality is confirmed as the connecting rod detection information; wherein, qualified quality is used to indicate that there are defects inside the connecting rod but it does not affect normal use.

[0074] It can be understood that the preset evaluation threshold is a reference standard determined based on a large amount of quality data of normal connecting rods and actual use requirements, which can be manually input or obtained from the detection database, etc., but not limited to this. When the comprehensive evaluation value is less than this threshold, it means that although the connecting rod has certain internal defects, the comprehensive impact of these defects is within an acceptable range and will not affect the normal use of the connecting rod. Therefore, the connecting rod is judged to be of qualified quality, and this conclusion is recorded as the connecting rod detection information. S2252b, if the comprehensive evaluation value is greater than or equal to the preset evaluation threshold, the connecting rod is judged to be of unqualified quality, and the unqualified quality is used as the connecting rod detection information; wherein, the unqualified quality is used to indicate that there are serious defects inside the connecting rod.

[0075] It can be understood that when the comprehensive evaluation value is greater than or equal to the preset evaluation threshold, it means that the comprehensive impact of the internal defects of the connecting rod is relatively serious, beyond the range that can be tolerated in normal use, and may affect the performance and safety of the connecting rod. Therefore, the connecting rod is judged to be unqualified in quality, and this conclusion is used as connecting rod inspection information to facilitate subsequent processing of these unqualified connecting rods, such as repair or scrapping.

[0076] With this setting, by comparing the comprehensive evaluation value with the preset evaluation threshold, the quality condition of the connecting rod can be judged quickly and clearly, which provides a clear basis for the quality control and subsequent processing of the connecting rod, and helps to improve production efficiency and product quality.

[0077] S300, in response to a second pressure operation, continuously obtain second sound information; wherein the second pressure operation refers to the action of applying a first force to a second force at a preset boost rate on the side of the pedal after the pedal and the connecting rod reach the end of the stroke, the second force is greater than the first force, and the second sound information is used to reflect the second acoustic emission signal at the welding point of the connecting rod and the pedal.

[0078] It is understandable that when the pedal and the connecting rod reach the end of their travel, the pressure on the side of the pedal increases from the first force to the second force at a preset pressure increase rate, which causes the welding point between the connecting rod and the pedal to bear additional pressure. If there are defects in the welding point, such as cold welding or desoldering, the structure of the welding point will change under such pressure changes, thereby generating acoustic emission.

[0079] S400, analyzing the second sound information to obtain welding detection information; wherein the welding detection information is used to reflect the welding quality of the welding point between the connecting rod and the pedal.

[0080] Exemplarily, the quality of the weld between the connecting rod and the pedal can be judged by extracting features from the second sound information, that is, by analyzing the degree of change in the sound amplitude of the second acoustic emission signal during the supercharging process; the second sound information can also be input into a learning model, and the learning model outputs accurate welding detection information, etc., but is not limited to this.

[0081] In a possible implementation, in step S400, analyzing the second sound information to obtain welding detection information includes: S410, analyzing the second sound information to obtain a mutation rate; wherein the mutation rate is used to indicate the rate of change of the sound amplitude of the second acoustic emission signal during the process from the first force being loaded at a preset boost rate to the second force being loaded.

[0082] It can be understood that when the pedal and the connecting rod are loaded and tested, if there are defects inside the welding part, such as incomplete penetration, pores, etc., these defects will cause local stress concentration during the force process, resulting in a sudden increase in the acoustic emission signal. When loaded to a certain force value, the acoustic emission signal shows obvious mutations, such as a sudden increase in amplitude and a sharp increase in the count rate. This may be a manifestation of the internal defects of the welding part beginning to expand or the generation of new microcracks. In the process of loading from the first force at a preset boost rate to the second force, the sound amplitude of the second acoustic emission signal will change with the change of pressure. The mutation rate is an indicator used to measure the speed of this change. By calculating the ratio of the change in the sound amplitude at adjacent moments to the time interval, the rate of change of the sound amplitude, that is, the mutation rate, is obtained. The larger the mutation rate, the more drastic the change in the sound amplitude, and the more obvious the response of the structure at the weld to the pressure change.

[0083] S420a, when the mutation rate is less than the preset mutation threshold, it is determined that the welding is good, and the good welding is confirmed as welding detection information.

[0084] It can be understood that the preset mutation threshold is a reference value determined based on a large amount of normal welding sample data and actual welding quality requirements. It can be manually input or obtained from the detection database, etc., but is not limited to this. When the mutation rate is less than this threshold, it means that during the pressure change process, the amplitude of the acoustic emission signal generated at the weld changes relatively smoothly, and there is no obvious abnormal change in the structure of the weld. It can be determined that the welding quality is good, and this conclusion is recorded as welding detection information.

[0085] S420b, when the mutation rate is greater than or equal to the preset mutation threshold, the welding is determined to be unqualified, and the welding unqualified is confirmed as welding detection information.

[0086] It can be understood that when the mutation rate is greater than or equal to the preset mutation threshold, it means that during the pressure change process, the amplitude of the acoustic emission signal generated at the weld changes abnormally drastically. This is likely due to defects in the weld, such as crack expansion, loose welds, etc., which lead to unstable structure of the weld and significant changes under pressure. Therefore, the welding quality is judged to be unqualified and this conclusion is used as welding inspection information.

[0087] In this way, the welding quality is judged by calculating the mutation rate. This method can intuitively, quickly and effectively detect whether there are quality problems in the welding point, improve the efficiency and accuracy of welding quality detection, help to timely discover and deal with welding defects, and ensure the overall quality and safety of automobile pedals.

[0088] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0089] Corresponding to the automobile pedal detection method described in the above embodiment, the embodiment of the present application also provides a automobile pedal detection system, and each module of the system can implement each step of the automobile pedal detection method. Figure 3 A structural block diagram of a vehicle pedal detection system provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the embodiment of the present application are shown.

[0090] Reference Figure 3 , the automobile pedal detection system includes: The first response acquisition module is used to continuously acquire the first sound information in response to the first pressure operation; wherein the first pressure operation refers to the action of applying a first force to the middle of the pedal so that the pedal and the connecting rod move at the starting point of the stroke until the pedal and the connecting rod reach the end point of the stroke, and the first sound information is used to reflect the first acoustic emission signal inside the connecting rod.

[0091] The first analysis module is used to analyze the first sound information to obtain connecting rod detection information; wherein the connecting rod detection information is used to reflect the production quality of the connecting rod.

[0092] The second response acquisition module is used to continuously acquire second sound information in response to a second pressure operation; wherein the second pressure operation refers to the action of applying a first force to a second force at a preset boost rate on the side of the pedal after the pedal and the connecting rod reach the end of the stroke, the second force is greater than the first force, and the second sound information is used to reflect the second acoustic emission signal at the welding point of the connecting rod and the pedal.

[0093] The second analysis module is used to analyze the second sound information to obtain welding detection information; wherein the welding detection information is used to reflect the welding quality of the welding point between the connecting rod and the pedal.

[0094] It should be noted that the information interaction, execution process and other contents between the above-mentioned modules are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0095] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the division of the above modules is used as an example for illustration. In practical applications, the above functions can be assigned to different modules as needed, that is, the internal structure of the system can be divided into different modules to complete all or part of the functions described above. The modules in the embodiment can be integrated into a processing unit, or each module can exist physically alone, or two or more modules can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the modules are only for the convenience of distinguishing from each other, and are not used to limit the scope of protection of this application. The specific working process of the modules in the above system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0096] An embodiment of the present application also provides a vehicle pedal detection device, including a pressure-applying device and a control device, wherein the control device is electrically connected to the pressure-applying device. Figure 4 This is a schematic diagram of the structure of a control device 6 provided in an embodiment of the present application. Figure 4 As shown, the control device 6 of this embodiment includes: at least one processor 60 ( Figure 4 Only one is shown), at least one memory 61 ( Figure 4Only one is shown) and a computer program 62 stored in the at least one memory 61 and executable on the at least one processor 60. When the processor 60 executes the computer program 62, the control device 6 implements the steps in any of the above-mentioned embodiments of the automobile pedal detection method, or implements the functions of the modules in the above-mentioned system embodiments.

[0097] Exemplarily, the computer program 62 may be divided into one or more modules / units, which are stored in the memory 61 and executed by the processor 60 to complete the present application. The one or more modules / units may be a series of computer program instruction segments capable of completing specific functions, which are used to describe the execution process of the computer program 62 in the control device 6.

[0098] The control device 6 can be a computing device such as a desktop computer, a notebook, a PDA, a cloud server, etc. The vehicle pedal detection device can include, but is not limited to, a processor 60 and a memory 61. Those skilled in the art can understand that Figure 4 It is only an example of the control device 6 and does not constitute a limitation on the control device 6. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, it may also include input and output devices, network access devices, buses, etc.

[0099] The processor 60 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0100] In some embodiments, the memory 61 may be an internal storage unit of the control device 6, such as a hard disk or memory of the control device 6. In other embodiments, the memory 61 may also be an external storage device of the control device 6, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the control device 6. Further, the memory 61 may also include both an internal storage unit and an external storage device of the control device 6. The memory 61 is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of the computer program. The memory 61 may also be used to temporarily store data that has been output or is to be output.

[0101] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in any of the above method embodiments are implemented.

[0102] An embodiment of the present application provides a computer program product. When the computer program product runs on a vehicle pedal detection device, the vehicle pedal detection device implements the steps in any of the above-mentioned method embodiments.

[0103] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium can at least include: any entity or device that can carry the computer program code to the automobile pedal detection device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, RandomAccess Memory), electric carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a disk or an optical disk.

[0104] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0105] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0106] In the embodiments provided in the present application, it should be understood that the disclosed automobile pedal detection device and system can be implemented in other ways. For example, the above-described automobile pedal detection system embodiment is only schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation, such as multiple modules can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or modules, which can be electrical, mechanical or other forms.

[0107] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0108] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for detecting a vehicle pedal, characterized in that: include: In response to a first pressure operation, continuously acquiring first sound information; wherein the first pressure operation refers to an action of applying a first force to the middle of the pedal so that the pedal and the connecting rod move at the starting point of the stroke until the pedal and the connecting rod reach the end point of the stroke, and the first sound information is used to reflect a first acoustic emission signal inside the connecting rod; Analyze the first sound information to obtain connecting rod detection information; wherein the connecting rod detection information is used to reflect the production quality of the connecting rod; In response to a second pressure operation, continuously acquiring second sound information; wherein the second pressure operation refers to an action of applying a second force from the first force at a preset pressure increase rate to the side of the pedal after the pedal and the connecting rod reach the end of the stroke, the second force is greater than the first force, and the second sound information is used to reflect a second acoustic emission signal at the welding point of the connecting rod and the pedal; The welding detection information is obtained by analyzing the second sound information; wherein the welding detection information is used to reflect the welding quality of the welding point between the connecting rod and the pedal.

2. The automobile pedal detection method according to claim 1, characterized in that: The step of analyzing the first sound information to obtain connecting rod detection information includes: Analyze the first sound information to obtain sound amplitude information and sound emission quantity information; wherein the sound amplitude information is used to reflect the sound amplitude corresponding to each of the first sound emission signals, and the sound emission quantity information is used to reflect the number of sound amplitudes reflected by the first sound emission signal inside the connecting rod that are greater than a preset amplitude and the growth of the number; The connecting rod detection information is obtained by analyzing the sound quantity information and the sound amplitude information.

3. The automobile pedal detection method according to claim 2, characterized in that: The analyzing according to the sound quantity information and the sound amplitude information to obtain the connecting rod detection information includes: When the number reflected by the sound emission quantity information is 0, it is determined that the connecting rod is of good quality, and the good quality is confirmed as the connecting rod detection information.

4. The automobile pedal detection method according to claim 3, characterized in that: The analyzing the sound quantity information and the sound amplitude information to obtain the connecting rod detection information also includes: When the number reflected by the sound emission quantity information is not 0, analyzing the sound emission quantity information to obtain a quantity growth sequence; wherein the quantity growth sequence is used to reflect the occurrence time sequence of each of the first acoustic emission signals greater than the preset amplitude; Analyze the quantity growth sequence to obtain first sequence information and quantity growth rate; wherein the first sequence information is used to reflect the time when the first acoustic emission signal in the first position in the quantity growth sequence appears, and the quantity growth rate is used to reflect the average growth rate of other first acoustic emission signals after the first acoustic emission signal in the quantity growth sequence appears; Analyze the first sequence bit information and the sound amplitude information to obtain first detection information; Analyze the quantity growth rate and the sound amplitude information to obtain second detection information; Connecting rod detection information is obtained by analyzing the first detection information and the second detection information.

5. The automobile pedal detection method according to claim 4, characterized in that: The step of analyzing the first sequence bit information and the sound amplitude information to obtain the first detection information includes: Analyzing according to the first order bit to obtain a damage coefficient; wherein the damage coefficient is used to reflect the degree of influence of the internal crack of the connecting rod on the connecting rod; Analyzing the sound amplitude information corresponding to the first sequence bit to obtain a damage value; wherein the damage value is used to reflect the degree of the internal crack; The damage value is corrected by using the damage coefficient to obtain first detection information.

6. The automobile pedal detection method according to claim 4, characterized in that: The step of analyzing the quantity growth rate and the sound amplitude information to obtain the second detection information includes: An expansion coefficient is obtained by analyzing the quantity growth rate; wherein the expansion coefficient is used to reflect the expansion trend of the internal crack when the connecting rod is under pressure; Analyze the average sound amplitude in the sound amplitude information during the quantity growth process to obtain an expansion energy value; wherein the expansion energy value is used to reflect the energy carried by the internal crack expansion; The expansion coefficient is used to correct the expansion energy value to obtain second detection information.

7. The automobile pedal detection method according to claim 6, characterized in that: The analyzing the first detection information and the second detection information to obtain the connecting rod detection information includes: Performing a weighted summation on the first detection information and the second detection information to obtain a comprehensive evaluation value; Compare the comprehensive evaluation value with a preset evaluation threshold value, and if the comprehensive evaluation value is less than the preset evaluation threshold value, determine that the connecting rod is of qualified quality, and confirm the qualified quality as the connecting rod detection information; wherein, the qualified quality is used to indicate that there are defects inside the connecting rod but it does not affect normal use; If the comprehensive evaluation value is greater than or equal to the preset evaluation threshold, the connecting rod is determined to be of unqualified quality, and the unqualified quality is used as the connecting rod detection information; wherein, the unqualified quality is used to indicate that there are serious defects inside the connecting rod.

8. The automobile pedal detection method according to claim 1, characterized in that: The step of analyzing the second sound information to obtain welding detection information includes: Analyze the second sound information to obtain a mutation rate; wherein the mutation rate is used to indicate the rate of change of the sound amplitude of the second acoustic emission signal during the process from the first force being loaded at the preset boost rate to the second force being loaded; When the mutation rate is less than a preset mutation threshold, it is determined that the welding is good, and the good welding is confirmed as welding detection information; When the mutation rate is greater than or equal to the preset mutation threshold, the welding is determined to be unqualified, and the welding unqualified is confirmed as the welding detection information.

9. A vehicle pedal detection system, characterized in that: include: A first response acquisition module, for continuously acquiring first sound information in response to a first pressure operation; wherein the first pressure operation refers to an action of applying a first force to the middle of the pedal so that the pedal and the connecting rod move at the starting point of the stroke until the pedal and the connecting rod reach the end point of the stroke, and the first sound information is used to reflect a first acoustic emission signal inside the connecting rod; a first analysis module, configured to analyze the first sound information to obtain connecting rod detection information; wherein the connecting rod detection information is used to reflect the production quality of the connecting rod; A second response acquisition module, for continuously acquiring second sound information in response to a second pressure operation; wherein the second pressure operation refers to an action of applying a force from the first force to a second force at a preset pressure increase rate on the side of the pedal after the pedal and the connecting rod reach the end of the stroke, the second force is greater than the first force, and the second sound information is used to reflect a second acoustic emission signal at a welding point between the connecting rod and the pedal; The second analysis module is used to analyze the second sound information to obtain welding detection information; wherein the welding detection information is used to reflect the welding quality of the welding point between the connecting rod and the pedal.

10. A vehicle pedal detection device, characterized in that: The method comprises a pressure-applying device and a control device, wherein the control device is electrically connected to the pressure-applying device, and the control device comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method according to any one of claims 1 to 8 when executing the computer program.

Images