Automobile Pedal Detection Method, System and Equipment

Abstract

This application is applicable to the technical field of pedal detection, and particularly relates to an automobile pedal detection method, system and device. The automobile pedal detection method includes: continuously acquiring first sound information in response to a first pressing operation; the first pressing 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; analyzing the first sound information to obtain connecting rod detection information; continuously acquiring second sound information in response to a second pressing operation; wherein, the second pressing operation refers to the action of applying a force that is loaded from a first force to a second force at a preset pressure increasing rate to the side of the pedal after the pedal and the connecting rod reach the end point of the stroke; analyzing the second sound information to obtain welding detection information. This method simulates the performance and quality performance of the automobile pedal in actual use through two pressing operations, and effectively detects and evaluates the automobile pedal.

Description

Technical Field

[0001] This application belongs to the technical field of pedal detection, and particularly relates to a method, system and device for detecting an automotive pedal. Background Art

[0002] As a key component of the automotive driving control system, the quality and reliability of an automotive pedal are directly related to driving safety and comfort. During vehicle operation, the pedal is frequently subjected to various forces applied by the driver, and both the welding joint between the connecting rod and the pedal and the structure of the connecting rod itself face severe tests.

[0003] Traditional methods for detecting automotive pedals mostly rely on manual visual inspection and simple physical measurements. Manual visual inspection can only detect surface defects and is difficult to detect deep problems such as cracks inside the connecting rod and internal defects at the welding joint. Moreover, manual inspection is greatly affected by subjective factors, and there are differences in the judgment criteria of different inspectors, resulting in inconsistent and inaccurate inspection results. Simple physical measurements, such as using a caliper to measure dimensions, can only verify whether the external dimensions of the pedal meet the standards and cannot effectively evaluate its performance and quality during actual use. Summary of the Invention

[0004] Embodiments of this application provide a method, system and device for detecting an automotive pedal, which can solve the problem that traditional methods for detecting automotive pedals cannot effectively evaluate their performance and quality during actual use.

[0005] In a first aspect, embodiments of this application provide a method for detecting an automotive pedal, including:

[0006] In response to a first pressing operation, continuously obtain first sound information; wherein, the first pressing 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 from the starting point of the stroke until they 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;

[0007] 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;

[0008] In response to a second pressing operation, continuously obtain second sound information; wherein, the second pressing operation refers to an action of applying a force that is loaded from the first force to a second force at a preset pressure increasing rate to the side of the pedal after the pedal and the connecting rod reach the end point 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 joint between the connecting rod and the pedal;

[0009] Analyze according to the second sound information to obtain welding detection information; wherein, the welding detection information is used to reflect the welding quality of the welded joint between the connecting rod and the pedal.

[0010] In the technical solutions described above in the embodiments of the present application, at least the following technical effects are achieved:

[0011] The vehicle footrest detection method provided by the present application first responds to a first pressing operation that presses on the middle of the pedal to cause the pedal and the connecting rod to 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 the first acoustic emission signal inside the connecting rod; then analyzes according to the first sound information to obtain connecting rod detection information for reflecting the production quality of the connecting rod; then responds to a second pressing operation that applies a force from a first force to a second force at a preset pressure increasing 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 the second acoustic emission signal at the welded joint between the connecting rod and the pedal; wherein, the second force is greater than the first force; analyze according to the second sound information to obtain welding detection information for reflecting the welding quality of the welded joint between the connecting rod and the pedal. This method analyzes the quality conditions of the connecting rod and the welded joint respectively through two pressing operations, covering the key parts of the vehicle footrest. 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 welded joint between the pedal and the connecting rod, it can simulate the performance and quality performance of the vehicle footrest in actual use, so as to effectively detect and evaluate the vehicle footrest.

[0012] In a possible implementation manner of the first aspect, the analyzing according to the first sound information to obtain connecting rod detection information includes:

[0013] Analyze according to 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 acoustic emission signal, and the sound emission quantity information is used to reflect the quantity of the first acoustic emission signals inside the connecting rod whose reflected sound amplitude is greater than a preset amplitude and the growth situation of the quantity.

[0014] Analyze according to the sound emission quantity information and the sound amplitude information to obtain connecting rod detection information.

[0015] In a possible implementation manner of the first aspect, the analyzing according to the sound emission quantity information and the sound amplitude information to obtain connecting rod detection information includes:

[0016] When the quantity reflected by the sound emission quantity information is 0, determine that the connecting rod is of good quality, and confirm the good quality as the connecting rod detection information.

[0017] In a possible implementation of the first aspect, the analysis based on the AE count information and the AE amplitude information to obtain the connecting rod detection information further includes:

[0018] When the count reflected by the AE count information is not 0, analyze according to the AE count information to obtain a count growth sequence; wherein, the count growth sequence is used to reflect the occurrence time sequence of each first AE signal greater than the preset amplitude;

[0019] Analyze according to the count growth sequence to obtain first order bit information and a count growth rate; wherein, the first order bit information is used to reflect the time when the first AE signal at the first position in the count growth sequence appears, and the count growth rate is used to reflect the average growth rate of other first AE signals after the first AE signal at the first position appears in the count growth sequence;

[0020] Analyze according to the first order bit information and the AE amplitude information to obtain first detection information;

[0021] Analyze according to the count growth rate and the AE amplitude information to obtain second detection information;

[0022] Analyze according to the first detection information and the second detection information to obtain the connecting rod detection information.

[0023] In a possible implementation of the first aspect, the analysis according to the first order bit information and the AE amplitude information to obtain the first detection information includes:

[0024] Analyze according to the first order bit to obtain a damage coefficient; wherein, the damage coefficient is used to reflect the influence degree of the internal crack of the connecting rod on the connecting rod;

[0025] Analyze according to the AE amplitude information corresponding to the first order bit to obtain a damage value; wherein, the damage value is used to reflect the crack degree of the internal crack;

[0026] Correct the damage value with the damage coefficient to obtain the first detection information.

[0027] In a possible implementation of the first aspect, the analysis according to the count growth rate and the AE amplitude information to obtain the second detection information includes:

[0028] Analyze according to the count growth rate to obtain an expansion coefficient; wherein, the expansion coefficient is used to reflect the expansion trend of the internal crack of the connecting rod when it is compressed;

[0029] Analyze according to the average sound amplitude during the process of quantity growth in the sound amplitude information to obtain an extended energy value; wherein, the extended energy value is used to reflect the magnitude of the energy carried by the internal crack expansion.

[0030] Modify the extended energy value with the extension coefficient to obtain a second detection information.

[0031] In a possible implementation manner of the first aspect, the analyzing according to the first detection information and the second detection information to obtain the connecting rod detection information includes:

[0032] Perform weighted summation on the first detection information and the second detection information to obtain a comprehensive evaluation value;

[0033] Compare the comprehensive evaluation value with a preset evaluation threshold. If the comprehensive evaluation value is less than the preset evaluation threshold, it is determined that the quality of the connecting rod is qualified, and the quality qualification is confirmed as the connecting rod detection information; wherein, the quality qualification is used to indicate that there are defects inside the connecting rod but it does not affect normal use.

[0034] If the comprehensive evaluation value is greater than or equal to the preset evaluation threshold, it is determined that the quality of the connecting rod is unqualified, and the quality unqualified is used as the connecting rod detection information; wherein, the quality unqualified is used to indicate that there are serious defects inside the connecting rod.

[0035] In a possible implementation manner of the first aspect, the analyzing according to the second sound information to obtain the welding detection information includes:

[0036] Analyze according to the second sound information to obtain a mutation rate; wherein, the mutation rate is used to indicate the sound amplitude change rate of the second acoustic emission signal during the process of loading from the first force to the second force at the preset pressure increasing rate.

[0037] When the mutation rate is less than a preset mutation threshold, it is determined that the welding is good, and the welding goodness is confirmed as the welding detection information;

[0038] When the mutation rate is greater than or equal to the preset mutation threshold, it is determined that the welding is unqualified, and the welding unqualified is confirmed as the welding detection information.

[0039] In a second aspect, an embodiment of the present application provides an automobile footrest detection system, including:

[0040] A first response acquisition module, configured to continuously acquire first sound information in response to a first pressing operation; wherein, the first pressing operation refers to an action of applying a first force to the middle of the pedal, causing the pedal and the connecting rod to move from 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;

[0041] A first analysis module, configured to analyze based on 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;

[0042] A second response acquisition module, configured to continuously acquire second sound information in response to a second pressing operation; wherein, the second pressing operation refers to an action of applying a force that is loaded from the first force to a second force at a preset pressure increasing rate to the side of the pedal after the pedal and the connecting rod reach the end point 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 welded joint of the connecting rod and the pedal;

[0043] A second analysis module, configured to analyze based on the second sound information to obtain welding detection information; wherein, the welding detection information is used to reflect the welding quality at the welded joint of the connecting rod and the pedal.

[0044] In a third aspect, an embodiment of the present application provides an automobile foot pedal detection device, including a pressing device and a control device, the control device is electrically connected to the pressing device, the control device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the method described in any one of the above first aspects is implemented.

[0045] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, 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 first aspects is implemented.

[0046] In a fifth aspect, an embodiment of the present application provides a computer program product, when the computer program product runs on an automobile foot pedal detection device, the automobile foot pedal detection device is caused to execute the automobile foot pedal detection method described in any one of the above first aspects.

[0047] It can be understood that the beneficial effects of the above second aspect to fifth aspect can be referred to the relevant descriptions in the above first aspect, and will not be elaborated here. Description of the Drawings

[0048] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for use in the embodiments or the description of the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0049] Figure 1 is a schematic flowchart of the method for detecting an automotive footrest provided by an embodiment of the present application;

[0050] Figure 2 is a schematic implementation flowchart of the method for detecting an automotive footrest provided by an embodiment of the present application;

[0051] Figure 3 is a schematic structural diagram of the automotive footrest detection system provided by an embodiment of the present application;

[0052] Figure 4 is a schematic structural diagram of the control device of the automotive footrest detection device provided by an embodiment of the present application. Detailed implementation manners

[0053] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are presented to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can 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 avoid unnecessary details from interfering with the description of the present application.

[0054] It should be understood that when used in the specification of the present application and the appended claims, the term "comprising" indicates the presence of the 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 their combinations.

[0055] It should also be understood that the term "and / or" used in the specification of the present application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0056] As used in the specification of the present application and the appended claims, the term "if" can be interpreted as "when", "once", "in response to determining", or "in response to detecting" depending on the context. Similarly, the phrase "if determined" or "if the described condition or event is detected" can be interpreted as meaning "once determined", "in response to determining", "once the described condition or event is detected", or "in response to detecting the described condition or event" depending on the context.

[0057] In addition, in the description of the specification and the appended claims of the present application, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0058] The reference to "one embodiment" or "some embodiments" etc. described in the specification of the present application means that specific features, structures or characteristics described in combination with the embodiment are included in one or more embodiments of the present application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments" etc. that appear at 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. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized.

[0059] As a key component of the vehicle driving control system, the quality and reliability of the vehicle footrest are directly related to driving safety and comfort. During vehicle driving, the footrest needs to frequently bear various forces applied by the driver, and both the welding joint between the connecting rod and the pedal and the structure of the connecting rod itself are facing severe tests.

[0060] Traditional vehicle footrest detection methods mostly rely on manual visual inspection and simple physical measurements. Manual visual inspection can only detect surface defects and is difficult to detect deep problems such as cracks inside the connecting rod and internal defects at the welding joint. Moreover, manual detection is greatly affected by subjective factors, and there are differences in the judgment criteria of different inspectors, resulting in the lack of consistency and accuracy of the detection results. Simple physical measurements, such as using a caliper to measure dimensions, can only verify whether the external dimensions of the footrest meet the standards and cannot effectively evaluate its performance and quality during actual use.

[0061] To solve the above problems, the embodiments of the present application provide a method, a system and a device for detecting an automotive footrest. In this method, first, a first pressing operation is responded to, which presses on the middle of the pedal with a first force, causing the pedal and the connecting rod to move at the starting point of the stroke until they reach the end point of the stroke, and the first sound information for reflecting the first acoustic emission signal inside the connecting rod is continuously acquired; then, the first sound information is analyzed to obtain the connecting rod detection information for reflecting the production quality of the connecting rod; then, a second pressing operation is responded to, which applies a force from the first force to the second force loaded at a preset pressure increasing rate on the side of the pedal after the pedal and the connecting rod reach the end point of the stroke, and the second sound information for reflecting the second acoustic emission signal at the welding joint of the connecting rod and the pedal is continuously acquired; wherein, the second force is greater than the first force; the second sound information is analyzed to obtain the welding detection information for reflecting the welding quality at the welding joint of the connecting rod and the pedal. This method analyzes the quality conditions of the connecting rod and the welding joint respectively through two pressing operations, covering the key parts of the automotive footrest. 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 joint of the pedal and the connecting rod, the performance and quality performance of the automotive footrest in actual use can be simulated, so as to effectively detect and evaluate the automotive footrest.

[0062] The method for detecting an automotive footrest provided by the embodiments of the present application can be applied to an automotive footrest detection device. At this time, the automotive footrest detection device is the execution subject of the method for detecting an automotive footrest provided by the embodiments of the present application. The embodiments of the present application do not impose any restrictions on the specific type of the automotive footrest detection device.

[0063] For example, the automotive footrest detection device may include a pressing device and a control device, and the control device is electrically connected to the pressing device. The pressing device is used to press on the pedal surface of the automotive footrest. The pressing device may include a pressing component and a driving component, and the pressing component is connected to the power output end of the driving component. The pressing component is used to abut against different positions on the pedal surface. For example, the pressing component may be a component composed of two pressing rods, and both pressing rods are connected to the power output end of the driving component. One pressing rod is used to press on the middle of the pedal, and the other pressing rod is used to press on the side of the pedal; the pressing component may also be a transmission component capable of adjusting the contact position, such as a mechanical claw or a combination device of a transmission rod and a pressing ball, etc., but not limited thereto. The pressing ball is a spherical structure or a ring structure that abuts against the pedal surface, and the transmission rod is used to control the contact position between the pressing ball and the pedal. The driving component may be a hydraulic press, a motor, etc., but not limited thereto. The control device monitors and controls the entire pressing process.

[0064] 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 large screen, a smart TV, and other terminal devices, a handheld device with wireless communication function, a computing device, or other processing devices 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 set top box (STB), a customer premise equipment (CPE), and / or other devices for communicating on a wireless system, as well as 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).

[0065] To better understand the vehicle pedal detection method provided in the embodiments of the present application, the following provides an exemplary introduction to the specific implementation process of the vehicle pedal detection method provided in the embodiments of the present application.

[0066] Figure 1 and Figure 2 FIG. shows a schematic flowchart of the vehicle pedal detection method provided in the embodiments of the present application. The vehicle pedal detection method includes:

[0067] S100, continuously obtaining first sound information in response to a first pressing operation; wherein, the first pressing 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.

[0068] 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 application process, which will in turn trigger an acoustic emission phenomenon to form a first acoustic emission signal. The elastic waves generated by this acoustic emission will propagate in the form of sound signals. The first sound information can be obtained through highly sensitive acoustic emission sensors (such as resonant acoustic emission sensors, broadband acoustic emission sensors, etc.). The acoustic emission sensors can accurately capture the sound signals converted from the elastic waves generated by the defects inside the connecting rod. That is, the acoustic emission sensors are tightly installed at key positions on the surface of the connecting rod, such as areas with stress concentration, parts prone to cracks, etc.

[0069] S200. Analyze according to 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.

[0070] Exemplarily, the first sound information can be subjected to feature extraction, such as features of the first sound signal like frequency, amplitude, duration, etc., and then abnormal features can be judged through these features, and the influence of the abnormal features on the quality of the connecting rod can be analyzed to obtain the connecting rod detection information; or the first sound information can be input into a learning model, and the learning model will output the corresponding connecting rod detection information, and so on, but not limited to this. 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.

[0071] In a possible implementation manner, in step S200, analyzing according to the first sound information to obtain the connecting rod detection information includes:

[0072] S210. Analyze according to the first sound information to obtain sound amplitude information and acoustic emission quantity information; wherein, the sound amplitude information is used to reflect the sound amplitude corresponding to each first acoustic emission signal, and the acoustic emission quantity information is used to reflect the number of first acoustic emission signals inside the connecting rod whose reflected sound amplitude is greater than the preset amplitude and the growth situation of the number.

[0073] 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, and so on, but not limited to this. The detection database refers to a database containing the preset amplitudes corresponding to different models of vehicle foot pedals. These data can be obtained through means such as laboratory experiments, on-site measurements and monitoring, and past experience. After obtaining the data, the collected data is sorted, classified, and archived, useful information and rules are extracted, and then the relevant data is saved into the database to form a detection database.

[0074] 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 a sound amplitude greater than this preset amplitude is counted. At the same time, observing the change of this number over time or during the pressure application process, the result obtained is the acoustic emission number information. These first acoustic emission signals are emitted from different positions of the same internal crack. The acoustic emission number information reflects the frequency of large-amplitude acoustic emission signals generated inside the connecting rod. The more the number, the more areas inside may have problems; the sound amplitude information reflects the energy size of each acoustic emission event. The larger the amplitude, the more serious the defect that generates the acoustic emission may be.

[0075] S220. Analyze based on the acoustic emission number information and the sound amplitude information to obtain the connecting rod detection information.

[0076] Exemplarily, it is possible to determine whether there are defects inside the connecting rod according to the number of the acoustic emission number information. In the case of defects, a comprehensive evaluation can be carried out by analyzing each first acoustic emission signal and the corresponding sound amplitude in the acoustic emission number information to obtain the connecting rod detection information; it is also possible to input the acoustic emission number information and the sound amplitude information into a learning model, and the learning model outputs the corresponding connecting rod detection information, etc., but not limited to this.

[0077] With such a setting, by separately analyzing the acoustic emission number 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, the accuracy and reliability of judging the production quality of the connecting rod are greatly improved.

[0078] In a possible implementation manner, in step S220, analyzing based on the acoustic emission number information and the sound amplitude information to obtain the connecting rod detection information includes:

[0079] S221a. When the number reflected by the acoustic emission number information is 0, it is determined that the connecting rod has good quality, and the good quality is confirmed as the connecting rod detection information.

[0080] It can be understood that if, during the entire first pressure application operation, the number of first acoustic emission signals generated inside the connecting rod with a sound amplitude greater than the preset amplitude is 0, this means that under the current detection conditions, there are no defects inside the connecting rod that can generate large-amplitude acoustic emission signals. According to the established judgment criteria, it can be determined that the quality of the connecting rod is good.

[0081] In a possible implementation manner, in step S220, analyzing based on the acoustic emission number information and the sound amplitude information to obtain the connecting rod detection information further includes:

[0082] S221b, when the quantity reflected by the AE quantity information is not 0, analyze according to the AE quantity information to obtain a quantity growth sequence; wherein, the quantity growth sequence is used to reflect the occurrence time sequence of each first AE signal greater than a preset amplitude.

[0083] It can be understood that when the quantity in the AE quantity information is not 0, it indicates that there is a situation where a relatively large-amplitude AE signal is generated inside the connecting rod. At this time, according to the order of occurrence of the first AE signals, record the occurrence time of each signal greater than the preset amplitude to form a time sequence, and this sequence is the quantity growth sequence.

[0084] S222b, analyze according to the quantity growth sequence to obtain first-order position information and a quantity growth rate; wherein, the first-order position information is used to reflect the occurrence time of the first AE signal at the first position in the quantity growth sequence, and the quantity growth rate is used to reflect the average growth rate of other first AE signals after the first AE signal at the first position appears in the quantity growth sequence.

[0085] It can be understood that extract the occurrence time of the first AE signal greater than the preset amplitude at the first position from the quantity growth sequence, and this time is the first-order position information. It can reflect the earliest moment when there may be problems inside the connecting rod. The quantity growth rate is obtained by calculating the average growth rate of the number of first AE signals greater than the preset amplitude that appear subsequently after the first signal appears.

[0086] S223b, analyze according to the first-order position information and the AE amplitude information to obtain first detection information.

[0087] It can be understood that the first-order position information reflects the starting time of the defect occurrence. Combining with the AE amplitude information, that is, the amplitude size of each AE signal, the severity and development trend of the defect inside the connecting rod in the early stage can be comprehensively judged. For example, if the first-order position information shows that the defect appears early and the sound amplitude in the AE amplitude information at the corresponding moment is large, it means that the early defect is relatively serious and may have a greater impact on the quality of the connecting rod. By comprehensively analyzing these information, the first detection information can be obtained.

[0088] Exemplarily, the influence degree of the internal crack of the connecting rod on the connecting rod can be obtained by analyzing the first-order position, the crack degree of the internal crack can be obtained by analyzing the corresponding AE amplitude information, and finally the severity can be adjusted according to the influence degree to obtain the final possible influence degree caused by the internal crack, which is the first detection information; or the first-order position information and the AE amplitude information can be input into a learning model, and the learning model outputs the corresponding first detection information, etc., but not limited to this.

[0089] In a possible implementation, in step S223b, analysis is performed based on the first-order bit information and the sound amplitude information to obtain the first detection information, including:

[0090] S2231, analyze according to the first order bit to obtain a damage coefficient; wherein, the damage coefficient is used to reflect the influence degree of the internal crack of the connecting rod on the connecting rod.

[0091] It can be understood that the earlier the occurrence time reflected by the first order bit, the earlier the internal crack may start to appear and move in the initial stage of pressure application, the longer the damage time to the connecting rod structure, and the corresponding damage coefficient will be larger; conversely, the damage coefficient will be smaller. Exemplarily, by establishing a mathematical relationship or an empirical model between the first order bit and the damage coefficient, the damage coefficient can be calculated according to the first order bit information to quantify the influence degree of the internal crack on the connecting rod; or by matching the first order bit 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.

[0092] S2232, analyze according to the sound amplitude information corresponding to the first order bit to obtain a damage value; wherein, the damage value is used to reflect the crack degree of the internal crack.

[0093] It can be understood that when the first order bit appears, the magnitude 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 intense the activity of the crack at this moment, and the higher the severity of the crack. Therefore, according to the magnitude of the sound amplitude, by a method similar to obtaining the damage coefficient in step S2231, a mathematical relationship or an empirical model between the sound amplitude information and the damage value can be established, and the damage value can be calculated according to the sound amplitude information to quantify the severity of the internal crack; or by matching the sound amplitude information in the detection database to obtain the corresponding damage value, etc., but not limited to this. The detection database also includes the damage values corresponding to different sound amplitude information.

[0094] S2233, correct the damage value with the damage coefficient to obtain the first detection information.

[0095] It can be understood that the first detection information = damage coefficient × damage value.

[0096] With such a setting, by calculating the damage coefficient and the damage value respectively and combining and correcting the two, it is possible to comprehensively evaluate the influence of the early internal crack of the connecting rod on the quality of the connecting rod from two dimensions of time and severity, providing more accurate data support for accurately judging the overall quality of the connecting rod subsequently.

[0097] S224b, analyze according to the quantity growth rate and the sound amplitude information to obtain the second detection information.

[0098] It can be understood that the quantity growth rate 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 more rapid the development of the defects may be. The acoustic amplitude information reflects the energy magnitude of the acoustic emission signal. The greater the energy, the higher the severity of the defects may be. By combining these two pieces of information, the quality of the connecting rod can be further evaluated from two aspects: the dynamic change and severity of the defect development, thereby obtaining the second detection information.

[0099] Exemplarily, by analyzing the quantity growth rate, the expansion trend of the internal defects of the connecting rod under pressure can be obtained. Then, by analyzing according to the average sound amplitude during the quantity growth in the acoustic amplitude information, the energy magnitude carried by the internal crack expansion can be obtained. Finally, by comprehensively analyzing the expansion trend and the energy magnitude, the second detection information can be obtained; or the quantity growth rate and the acoustic amplitude information can be input into a learning model, and the learning model outputs the corresponding second detection information, etc., but not limited to this.

[0100] In a possible implementation manner, in step S224b, analyzing according to the quantity growth rate and the acoustic amplitude information to obtain the second detection information includes:

[0101] S2241, analyzing according to the quantity growth rate to obtain an expansion coefficient; wherein, the expansion coefficient is used to reflect the expansion trend of the internal crack of the connecting rod under pressure.

[0102] It can be understood that the higher the quantity growth rate, the faster the frequency of the acoustic emission signal with a large amplitude generated inside the connecting rod increases. This usually indicates that the internal crack is continuously expanding, interacting with more regions, resulting in more acoustic emission events. Exemplarily, by establishing a mathematical relationship or an empirical model between the quantity growth rate and the expansion coefficient, the expansion coefficient can be calculated according to the quantity growth rate to quantify the expansion trend of the internal crack; or by matching the quantity growth rate in the detection database, the corresponding expansion coefficient can be obtained, etc., but not limited to this. The detection database also includes different quantity growth rates and the corresponding expansion coefficients.

[0103] S2242, analyzing according to the average sound amplitude during the quantity growth in the acoustic amplitude information to obtain an expansion energy value; wherein, the expansion energy value is used to reflect the energy magnitude carried by the internal crack expansion.

[0104] It can be understood that during the process of quantity growth, the average sound amplitude in the sound amplitude information represents the average energy level of the acoustic emission signals generated by cracks during this period. The larger the average sound amplitude, the more energy is released by the cracks during the 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; or the average sound amplitude can be matched in the detection database to obtain the corresponding expansion energy value, etc., but not limited to this. The detection database also includes different average sound amplitudes and corresponding expansion energy values.

[0105] S2243, correct the expansion energy value with the expansion coefficient to obtain the second detection information.

[0106] It can be understood that the second detection information = expansion coefficient × expansion energy value.

[0107] With such a setting, by calculating the expansion coefficient and the expansion energy value respectively and combining and correcting the two, 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 the trend and energy of crack expansion, providing richer and more accurate data support for judging the overall quality of the connecting rod.

[0108] S225b, analyze based on the first detection information and the second detection information to obtain the connecting rod detection information.

[0109] 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 the compression process. By combining these two pieces of information and using specific analysis methods, such as weighted average, comprehensive evaluation model, etc., it is possible to comprehensively consider the quality change of the connecting rod from the initial state to the compression process, so as to obtain more accurate connecting rod detection information that can better reflect the overall production quality of the connecting rod.

[0110] With such a setting, analyzing by integrating the first detection information and the second detection information avoids the limitation of judging the quality of the connecting rod based only on a single stage or a single factor, fully considers the performance of the connecting rod quality in different stages and different aspects, and significantly improves the comprehensiveness and accuracy of judging the production quality of the connecting rod.

[0111] In a possible implementation manner, in step S225b, analyzing based on the first detection information and the second detection information to obtain the connecting rod detection information includes:

[0112] S2251, perform weighted summation on the first detection information and the second detection information to obtain a comprehensive evaluation value.

[0113] It can be understood that the weights of the first detection information and the second detection information can be manually input by a person, or obtained from a detection database, etc., but are not limited thereto.

[0114] S2252a. Compare the comprehensive evaluation value with a preset evaluation threshold. If the comprehensive evaluation value is less than the preset evaluation threshold, it is determined that the quality of the connecting rod is qualified, and the quality qualification is confirmed as the connecting rod detection information; wherein, the quality qualification is used to indicate that there are defects inside the connecting rod but it does not affect normal use.

[0115] It can be understood that the preset evaluation threshold is a reference standard determined based on the quality data of a large number of normal connecting rods and actual use requirements. It can be manually input by a person, or obtained from a detection database, etc., but is not limited thereto. When the comprehensive evaluation value is less than this threshold, it means that although there are certain internal defects in the connecting rod, the comprehensive influence degree of these defects is within an acceptable range and will not affect the normal use of the connecting rod. Therefore, it is determined that the quality of the connecting rod is qualified, and this conclusion is recorded as the connecting rod detection information.

[0116] S2252b. If the comprehensive evaluation value is greater than or equal to the preset evaluation threshold, it is determined that the quality of the connecting rod is unqualified, and the quality unqualified is used as the connecting rod detection information; wherein, the quality unqualified is used to indicate that there are serious defects inside the connecting rod.

[0117] 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 influence of the internal defects of the connecting rod is relatively serious, exceeding the range that can be tolerated for normal use, and may affect the performance and safety of the connecting rod. Therefore, it is determined that the quality of the connecting rod is unqualified, and this conclusion is used as the connecting rod detection information for subsequent processing of these unqualified connecting rods, such as repair or scrapping.

[0118] With such a setting, by comparing the comprehensive evaluation value with the preset evaluation threshold, the quality status of the connecting rod can be quickly and clearly judged, providing a clear basis for the quality control and subsequent processing of the connecting rod, which helps to improve production efficiency and product quality.

[0119] S300. In response to the second pressing operation, continuously obtain second sound information; wherein, the second pressing operation refers to the action of applying a force that is loaded from a first force to a second force at a preset boosting 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 welded joint of the connecting rod and the pedal.

[0120] It's understandable that when the pedal and connecting rod reach the end of their travel, the pressure on the pedal side increases from the first to the second force at a preset pressure increase rate. This process places additional pressure on the weld between the connecting rod and the pedal. If there are defects in the weld, such as a cold weld or a desoldering, this pressure change can cause structural changes in the weld, leading to acoustic emissions.

[0121] 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.

[0122] For example, 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 then outputs accurate welding detection information, etc., but is not limited to this.

[0123] In a possible implementation, in step S400, analyzing the second sound information to obtain welding detection information includes:

[0124] S410 , analyzing the second sound information to obtain a mutation rate; wherein the mutation rate is used to indicate a rate of change of the sound amplitude of the second acoustic emission signal during a process from a first force applied at a preset boost rate to a second force applied.

[0125] Understandably, when performing load testing on the pedal-connecting rod connection, internal defects in the weld, such as incomplete weld penetration or porosity, can cause localized stress concentrations during the load process, leading to a sudden increase in the acoustic emission signal. When the load reaches a certain force, the acoustic emission signal exhibits a significant abrupt change, such as a sudden increase in amplitude or a sharp rise in count rate. This may indicate the expansion of internal defects in the weld or the development of new microcracks. During the transition from the first application of force at a preset pressure increase rate to the second, the amplitude of the second acoustic emission signal changes with the pressure change. The rate of change is measured by the ratio of the change in the amplitude between adjacent moments to the time interval. A higher rate indicates a more dramatic change in the amplitude and a more pronounced structural response to the pressure change at the weld.

[0126] 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.

[0127] It is 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 a test database, etc., but is not limited to these. When the mutation rate is less than this threshold, it indicates that the amplitude of the acoustic emission signal generated at the weld has changed relatively smoothly during the pressure change process, and the structure of the weld has not undergone obvious abnormal changes. Therefore, the weld quality can be determined to be good, and this conclusion is recorded as welding inspection information.

[0128] S420b, when the mutation rate is greater than or equal to the preset mutation threshold, the welding is determined to be unqualified, and the unqualified welding is confirmed as welding detection information.

[0129] It can be understood that when the mutation rate is greater than or equal to the preset mutation threshold, it means that the amplitude of the acoustic emission signal generated at the weld has changed dramatically during the pressure change process. This is likely due to defects in the weld, such as crack propagation or loose welds, which lead to structural instability at the weld and significant changes under pressure. Therefore, the weld quality is judged to be unqualified and this conclusion is used as welding inspection information.

[0130] With this setting, 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 weld, 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.

[0131] 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 this application.

[0132] Corresponding to the automobile pedal detection method described in the above embodiment, the embodiment of the present application also provides an 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 the automobile 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.

[0133] Reference Figure 3 , the automobile pedal detection system includes:

[0134] The first response acquisition module is configured to continuously acquire first sound information in response to a 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 from 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.

[0135] The first analysis module is configured to analyze according to 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.

[0136] The second response acquisition module is configured to continuously acquire second sound information in response to a second pressing operation; wherein, the second pressing operation refers to an action of applying a force that is loaded from a first force to a second force at a preset pressure increasing 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 welded joint of the connecting rod and the pedal.

[0137] The second analysis module is configured to analyze according to the second sound information to obtain welding detection information; wherein, the welding detection information is used to reflect the welding quality at the welded joint of the connecting rod and the pedal.

[0138] It should be noted that for the information interaction, execution process, etc. between the above modules, since they are based on the same concept as the method embodiment of the present application, their specific functions and the technical effects brought, for details, please refer to the method embodiment part, and will not be elaborated here.

[0139] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the above division of each module is used for illustration. In practical applications, the above functions can be allocated to different modules according to needs, that is, the internal structure of the system is divided into different modules to complete all or part of the functions described above. Each module in the embodiment can be integrated in a processing unit, or each module exists physically alone, or two or more modules can be integrated in one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. In addition, the specific names of each module are only for the convenience of mutual distinction and do not limit the protection scope of the present application. The specific working process of the modules in the above system can refer to the corresponding process in the foregoing method embodiment and will not be elaborated here.

[0140] The embodiment of the present application further provides an automobile pedal detection device, including a pressing device and a control device, and the control device is electrically connected to the pressing device. Figure 4 It is a schematic structural diagram of the control device 6 provided in an embodiment of the present application. As Figure 4 shown, the control device 6 of this embodiment includes: at least one processor 60 ( Figure 4 only one is shown in Figure 4(only one is shown in the figure), and a computer program 62 stored in the at least one memory 61 and operable 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 vehicle pedal detection method, or the control device 6 implements the functions of each module in the above-mentioned system embodiment.

[0141] Exemplarily, the computer program 62 may be divided into one or more modules / units. The one or more modules / units 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 performing specific functions, and these instruction segments are used to describe the execution process of the computer program 62 in the control device 6.

[0142] The control device 6 may be a computing device such as a desktop computer, a notebook, a palm computer, or a cloud server. The vehicle pedal detection device may include, but is not limited to, a processor 60 and a memory 61. Those skilled in the art can understand that Figure 4 merely examples of the control device 6, which do not constitute a limitation on the control device 6. It may include more or fewer components than shown in the figure, or combine certain components, or different components. For example, it may also include input / output devices, network access devices, buses, etc.

[0143] The processor 60 may be a central processing unit (CPU). The processor 60 may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0144] 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 of the control device 6 and an external storage device. The memory 61 is used to store an operating system, application programs, a boot loader (BootLoader), data, and other programs, such as program codes of the computer program. The memory 61 may also be used to temporarily store data that has been output or will be output.

[0145] An embodiment of the present application further provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the steps in any of the above method embodiments are implemented.

[0146] An embodiment of the present application provides a computer program product, and when the computer program product runs on an automotive pedal detection device, the automotive pedal detection device implements the steps in any of the above method embodiments.

[0147] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on such an understanding, to implement all or part of the processes in the above method embodiments of the present application, a computer program may be used to instruct relevant hardware to complete. The computer program may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps in each of the above method embodiments may be implemented. Among them, the computer program includes computer program codes, and the computer program codes may be in the form of source code, object code, executable files, or some intermediate forms, etc. The computer-readable medium may at least include: any entity or device capable of carrying the computer program codes to the automotive pedal detection device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium. For example, a USB flash drive, a portable hard disk, a magnetic disk, or an optical disc, etc.

[0148] In the above embodiments, the descriptions of each embodiment have their own emphases. For parts not detailed or recorded in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0149] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or by a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. A professional technician can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0150] In the embodiments provided in this application, it should be understood that the disclosed vehicle pedal detection device and system can be implemented in other ways. For example, the vehicle pedal detection system embodiments described above are merely illustrative. For example, the division of the modules is only a logical function division, and there can be other division methods in actual implementation. For example, multiple modules can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling, direct coupling or communication connection to each other can be an indirect coupling or communication connection through some interfaces, devices or modules, and can be in an electrical, mechanical or other form.

[0151] The modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they can be located in one place, or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0152] The above embodiments are only used to illustrate the technical solutions of this application, rather than to limit it; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included in the protection scope of this application.

Claims

1. A method for detecting a vehicle pedal, characterized in that: include: Continuously acquiring first sound information in response to a first pressure operation; wherein the first pressure operation is an action of applying a first force to the middle portion of the pedal so that the pedal and the connecting rod move from a starting point of a stroke until the pedal and the connecting rod reach an end point of a stroke, and the first sound information is used to reflect a first acoustic emission signal inside the connecting rod; 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; Continuously acquiring second sound information in response to a second pressure application operation; wherein the second pressure application operation refers to an action of applying a force from the first pressure to a second pressure at a preset pressure increase rate on the side of the pedal after the pedal and the connecting rod reach an end of travel, the second pressure being greater than the first pressure, and the second sound information is used to reflect a second acoustic emission signal at a weld between the connecting rod and the pedal; 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; The analyzing the first sound information to obtain the connecting rod detection information includes: 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 times the sound amplitude reflected by the first sound emission signal inside the connecting rod exceeds a preset amplitude, and the growth of the number; Analyze the sound quantity information and the sound amplitude information to obtain connecting rod detection information; The analyzing the second sound information to obtain welding detection information includes: Analyzing the second sound information to obtain a mutation rate; wherein the mutation rate is used to indicate a rate of change in the sound amplitude of the second acoustic emission signal during a process from the first force being applied at the preset boost rate to the second force being applied; 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 unqualified welding is confirmed as the welding detection information.

2. The automobile pedal detection method according to claim 1, wherein: The analyzing 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 number 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.

3. The automobile pedal detection method according to claim 2, characterized in that: The analyzing 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 number information is not 0, analyzing the sound emission number information to obtain a number growth sequence; wherein the number growth sequence is used to reflect the time sequence of occurrence of each first sound emission signal greater than the preset amplitude; Analyze the quantity growth sequence to obtain first sequence bit information and a quantity growth rate; wherein the first sequence bit information is used to reflect the time when the first 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 first acoustic emission signal appears in the quantity growth sequence; 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.

4. The automobile pedal detection method according to claim 3, wherein: The analyzing the first sequence bit information and the sound amplitude information to obtain the first detection information includes: Analyze 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 using the damage coefficient to obtain first detection information.

5. The automobile pedal detection method according to claim 3, characterized in that: The 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 growth rate of the number of cracks; wherein the expansion coefficient is used to reflect the expansion trend of the internal crack of the connecting rod when it is under pressure; 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 carried by the internal crack expansion; The expansion energy value is corrected using the expansion coefficient to obtain second detection information.

6. The automobile pedal detection method according to claim 5, 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; Comparing the comprehensive evaluation value with a preset evaluation threshold value; if the comprehensive evaluation value is less than the preset evaluation threshold value, determining that the connecting rod is of qualified quality, and confirming the qualified quality as the connecting rod inspection information; wherein, the qualified quality is used to indicate that there are defects inside the connecting rod but do 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.

7. A car pedal detection system, characterized in that: include: a first response acquisition module configured to continuously acquire first sound information in response to a 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 from a stroke starting point until the pedal and the connecting rod reach a stroke end point, 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 configured to continuously acquire second sound information in response to a second pressure application operation; wherein the second pressure application operation refers to an action of applying a force from the first pressure to a second pressure at a preset pressure increase rate on the side of the pedal after the pedal and the connecting rod reach an end of travel, the second pressure being greater than the first pressure, and the second sound information reflecting a second acoustic emission signal at a weld between the connecting rod and the pedal; a second analysis module, configured 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; Wherein, the first analysis module is further used for: 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 times the sound amplitude reflected by the first sound emission signal inside the connecting rod exceeds a preset amplitude, and the growth of the number; Analyze the sound quantity information and the sound amplitude information to obtain connecting rod detection information; The second analysis module is further configured to: Analyzing the second sound information to obtain a mutation rate; wherein the mutation rate is used to indicate a rate of change in the sound amplitude of the second acoustic emission signal during a process from the first force being applied at the preset boost rate to the second force being applied; 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 unqualified welding is confirmed as the welding detection information.

8. A car 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 6 when executing the computer program.

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