Method for realizing health assessment of high-speed rotating object based on response frequency characteristic change

Abstract

The application provides a method and device for realizing health assessment of high-speed rotating object based on response frequency characteristic change, which comprises the following steps: 1) building an airplane landing equivalent experiment platform and conducting experiments; 2) obtaining time domain signals of tire response by using a DIC analysis method; 3) analyzing frequency characteristic change of the tire response time domain signals; and 4) giving a tire health condition judgment conclusion. The device comprises an airplane landing equivalent experiment platform, a shooting device, a data analysis device and a health condition judgment system which are electrically connected with the shooting device. The application has reasonable conception, can realize quantitative assessment of the health condition of the tire by simulating the real service environment of the tire, collecting response parameters of the tire and analyzing characteristic change of the parameters and reflecting internal damage of the tire, thereby providing early warning before the tire is damaged, and has important engineering significance.

Description

Technical Field

[0001] This invention relates to the field of aircraft structural health monitoring, and more specifically to a method for assessing the health of high-speed rotating objects based on changes in response frequency characteristics. Background Technology

[0002] Tires are a crucial component of aircraft, and their health is directly related to the safety of takeoff and landing. Each takeoff and landing subjectes the tires to intense external impact loads while rotating at high speeds, causing internal damage. Once this internal damage accumulates to a certain extent, tire blowouts can occur during takeoff and landing, seriously threatening the safety of aircraft operations and even resulting in passenger injuries or fatalities. The tire structure is complex, primarily composed of composite materials such as rubber, nylon threads, and steel wires. Therefore, the dynamic response of tires during takeoff and landing is a highly nonlinear problem, making analysis challenging. Existing research on structural health assessment methods has found that internal damage to different structures leads to changes in stiffness, which in turn affects their natural frequencies and response parameters during service. Therefore, by simulating the real service environment of tires, collecting tire response parameters, and analyzing the characteristic changes of these parameters to reflect internal damage, a quantitative assessment of tire health can be achieved. This provides early warning before tire failure, which has significant engineering implications. Summary of the Invention

[0003] To address the technical problems existing in the background art, the present invention proposes a method and apparatus for health assessment of high-speed rotating objects based on changes in response frequency characteristics. The concept is reasonable. By simulating the real service environment of a tire, collecting the tire's response parameters and analyzing the characteristic changes of these parameters, and thereby reflecting internal damage to the tire, a quantitative assessment of the tire's health status can be achieved, thus providing an early warning before tire damage, which has important engineering significance.

[0004] To address the aforementioned technical problems, this invention provides a method for health assessment of high-speed rotating objects based on changes in response frequency characteristics, which mainly includes the following steps:

[0005] 1) Construct an equivalent experimental platform for aircraft takeoff and landing and conduct experiments;

[0006] 2) Obtain the time-domain signal of the tire response using the DIC analysis method;

[0007] 3) Analyze the frequency characteristics of the tire response time-domain signal;

[0008] 4) Provide a conclusion on the health condition of the tires.

[0009] The method for health assessment of high-speed rotating objects based on changes in response frequency characteristics, wherein step 1) is as follows: First, based on the relativity of motion, the tire in the equivalent experimental platform is kept fixed, and a rotating drum with a larger radius on the side of the tire approaches the tire at a speed V and compresses it; then, by changing the speed of the drum's rotation and the speed of its leftward movement over time, the process of aircraft takeoff and landing is reproduced; different surface shapes of tracks are fixed to the outer surface of the drum on the right side of the aircraft to simulate different ground types; digital speckle patterns for DIC analysis are pasted onto the surface of the tire on the left side of the aircraft, and two high-speed cameras are used to capture the changes in digital speckle patterns on the tire surface over time in real time.

[0010] The method for health assessment of high-speed rotating objects based on changes in response frequency characteristics includes: in step 1), the selected tire needs to be repeatedly loaded until the tire blows out, and multiple sets of photos of tire surface speckle changes over time are saved according to the number of loading cycles.

[0011] The method for health assessment of high-speed rotating objects based on changes in response frequency characteristics, wherein step 2) is specifically as follows: each loading of the selected tire is considered an experiment, and the photographs of the tire surface speckle changes over time obtained in this experiment are used as experimental data for analysis. That is, the three-dimensional DIC analysis method is used to analyze the positions on the tire surface that are at the same distance from the tire center each time, so as to obtain the time domain signal of the first principal strain changing over time under each loading.

[0012] The method for health assessment of high-speed rotating objects based on changes in response frequency characteristics, wherein step 3) specifically involves: using a fast Fourier transform analysis method to process the time-domain signal of the first principal strain obtained in step 2) under each loading, and obtaining the frequency-domain signal of the response under each loading. The frequency-domain signal of the tire under each loading at different loading times contains the natural frequencies of different order responses. By comparing the values ​​of the same order natural frequencies under different loading times, the change in the value of each order natural frequency with the number of loading times can be obtained.

[0013] The method for assessing the health of a high-speed rotating object based on changes in response frequency characteristics includes the following steps: Step 4) involves predicting tire damage based on the magnitude of the absolute value change in the response frequency decrease obtained from Step 3); analyzing changes from the 5th to the 10th order; and providing a conclusion on the health status of the tire when the absolute value of the decrease in the 5th to the 10th order meets the requirements for function value calculation. This conclusion includes three levels: warning, pending disuse, and failure.

[0014] The method for assessing the health of a high-speed rotating object based on changes in response frequency characteristics, wherein the specific criterion for judging the health status of the tire is a function value calculated by the following formula (1.1):

[0015]

[0016] In equation (1.1) above, F(i) is the calculated value of the tire health state under the i-th loading; n is the order of the natural frequency; f n,i The value of the nth natural frequency is obtained by frequency domain analysis of the time-domain signal of the first principal strain acquired during the i-th loading; f n,0 The value of the nth natural frequency is obtained by frequency domain analysis of the time-domain signal of the first principal strain acquired during the initial loading; f 1,0 The first-order natural frequency is obtained by frequency domain analysis of the time-domain signal of the first principal strain acquired during the initial loading. `sgn()` is the sign function; it takes the value 1 when the value inside the parentheses is positive, -1 when the value inside the parentheses is negative, and 0 when the value inside the parentheses is 0. Based on the calculated function value, three results are given: warning, pending shutdown, and failure. The specific relationship between the function value and the health status assessment conclusion is shown below:

[0017]

[0018] Based on experimental experience, a failure warning is given, indicating that the tire will blow out during the next use; and regardless of whether the final blowout occurs on the side facing the high-speed camera or the side away from the high-speed camera, the relationship between the change in its response frequency characteristics and the tire health status satisfies the relationship between the function value and the health status assessment conclusion.

[0019] An apparatus for assessing the health status of a high-speed rotating object based on changes in structural response frequency characteristics, and a method for assessing the health status of a high-speed rotating object based on changes in response frequency characteristics, comprising an aircraft takeoff and landing equivalent experimental platform, an imaging device, and a data analysis device and a health status judgment system electrically connected to the imaging device; the aircraft takeoff and landing equivalent experimental platform is used to simulate the takeoff and landing conditions of a floating aircraft, fixing the rotation and movement of the experimental tire and drum; the imaging device is matched and disposed beside the aircraft takeoff and landing equivalent experimental platform, and is used to capture the changes in the digital speckle morphology of the tire surface with loading time under different loading cycles; the data analysis device and the health status judgment system are electrically connected to the imaging device, and are used to analyze the time-domain signal and frequency characteristic changes of the response data and provide a conclusion on the health status of the tire.

[0020] The device for assessing the health status of a high-speed rotating object based on changes in structural response frequency characteristics includes: an aircraft takeoff and landing equivalent experimental platform comprising a tire fixing device, a road surface simulation device, and a drum control device; the tire fixing device is used to fix the tire in position for each experiment, preventing rotation and displacement; the road surface simulation device is matched and disposed on one side of the tire fixing device, and is a drum capable of rotation and translation, with its surface covered by tracks that can simulate different road surface conditions; the drum control device is electrically connected to the road surface simulation device and is used to control the relationship between the rotation and displacement of the drum over time.

[0021] The device for assessing the health status of a high-speed rotating object based on changes in structural response frequency characteristics comprises: an imaging device including an LED light source, a high-speed camera, a synchronization triggering device, and a data transfer station; the LED light source is used to provide auxiliary illumination to the tire during imaging, assisting the high-speed camera in achieving clear imaging with a high sampling rate; the high-speed camera is used to image the tire; the synchronization triggering device is electrically connected to the high-speed camera and is used to control the activation and synchronization triggering of the high-speed camera; the data transfer station is used to store the data captured by the high-speed camera and transmit it to the data analysis device and health status assessment system, with one end electrically connected to the high-speed camera and the other end electrically connected to the data analysis device and health status assessment system; the data analysis device and health status assessment system are used to analyze the time-domain signal and frequency characteristic changes of the response data, and to analyze the decrease in the value of the inherent frequency relative to the initial state, thereby providing a conclusion on the health status of the tire.

[0022] By adopting the above technical solution, the present invention has the following beneficial effects:

[0023] The present invention provides a reasonable and simple method for assessing the health of high-speed rotating objects based on changes in response frequency characteristics. By using three-dimensional DIC technology and frequency domain analysis, the frequency changes of the response signal of a high-speed rotating object during operation can be obtained. The health status of the high-speed rotating object can be quantitatively assessed by the frequency characteristic changes of the response signal. This method enables efficient and accurate quantitative assessment of the health status of tires and is suitable for promotion and application.

[0024] This invention simulates the real service environment of tires, collects tire response parameters, and analyzes the characteristic changes of these parameters to reflect internal tire damage. This enables a quantitative assessment of tire health status, providing early warning before tire damage occurs, which has significant engineering implications.

[0025] The device for assessing the health status of high-speed rotating objects based on changes in structural response frequency characteristics is simple and reasonable in design, and can efficiently and accurately perform quantitative assessment of the health status of tires. The health status assessment of tires in this invention includes three results: early warning, waiting to be discontinued, and failure. It can progressively reflect the entire damage process of the tire, providing sufficient reaction time for tire replacement, and is suitable for promotion and application. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the aircraft takeoff and landing equivalent experimental platform involved in the method for health assessment of high-speed rotating objects based on changes in response frequency characteristics in this invention.

[0028] Figure 2 This is a schematic diagram of the DIC analysis selection location involved in the method for health assessment of high-speed rotating objects based on changes in response frequency characteristics in this invention;

[0029] Figure 3 This is a schematic diagram of the frequency domain signals of the response under different loading conditions involved in the method for health assessment of high-speed rotating objects based on changes in response frequency characteristics of the present invention.

[0030] Figure 4 This is a schematic diagram showing the variation of the 5th to 10th natural frequencies with the number of loading cycles in the method for health assessment of high-speed rotating objects based on changes in response frequency characteristics of the present invention.

[0031] Figure 5 This is a schematic diagram of the device for assessing the health status of a high-speed rotating object based on changes in structural response frequency characteristics, as per the present invention. Detailed Implementation

[0032] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] The present invention will be further explained below with reference to specific embodiments.

[0034] The method for health assessment of high-speed rotating objects based on changes in response frequency characteristics provided in this embodiment specifically includes the following steps:

[0035] 1) Construction and experimentation of an aircraft takeoff and landing equivalent test platform;

[0036] 2) Obtain the time-domain signal of the tire response using the DIC analysis method;

[0037] 3) Analyze the frequency characteristics of the tire response time-domain signal;

[0038] 4) And give a conclusion on the assessment of the tire's health condition.

[0039] The specific process of step 1) above is as follows: Since conducting actual takeoff and landing tests of aircraft is very costly, conducting tests through an equivalent experimental platform can reduce costs; a schematic diagram of the experimental platform is shown below. Figure 1 As shown; firstly, based on the relativity of motion, the tire in this equivalent experimental platform remains fixed. A rotating drum with a larger radius on the side of the tire approaches the tire at a speed V and compresses it. By changing the rotational speed and leftward movement speed of the drum over time, the process of aircraft takeoff and landing is reproduced. Different surface shapes of tracks are fixed to the outer surface of the drum on the right side to simulate different ground types (including wavy surfaces, rough surfaces, large-texture surfaces, and small-texture surfaces). For ease of subsequent analysis, digital speckle patterns for DIC analysis are affixed to the surface of the left tire. Simultaneously, during the experiment, two high-speed cameras are used to capture real-time changes in the digital speckle patterns on the tire surface over time. It should be noted that since the tire in this experimental platform is non-rotating and has no displacement, this is beneficial for capturing the surface speckle patterns. In step 1), the selected tire needs to be repeatedly loaded until it bursts, and multiple sets of photos showing the changes in tire surface speckle patterns over time are saved according to the number of loading cycles.

[0040] The specific process of step 2) above is as follows: Each loading of the selected tire constitutes one experiment. The photographs of the changes in the speckle pattern on the tire surface over time obtained in this experiment are used as experimental data for analysis. That is, the three-dimensional DIC analysis method is used to analyze the positions on the tire surface that are at the same distance from the tire center in each experiment. The schematic diagram of the selected positions for DIC analysis is shown below. Figure 2 As shown ( Figure 2 (Any point on the dotted line in the diagram is acceptable), the value of which is equal to the average of the tire radius and the wheel hub radius; through DIC analysis, the time-domain signal of the first principal strain changing with time under each loading was mainly obtained.

[0041] The specific process of step 3) above is as follows: The time-domain signal of the first principal strain obtained in each loading step 2) is processed using the Fast Fourier Transform analysis method to obtain the frequency-domain signal of the response under each loading step, such as... Figure 3 As shown, the frequency domain signal of the tire under each loading cycle at different times contains the natural frequencies of different order responses. By comparing the values ​​of the same order natural frequencies under different loading cycles, the change of each order natural frequency with the number of loading cycles can be obtained.

[0042] The specific process of step 4) above is as follows: By analyzing the absolute value of the decrease in response frequency obtained in step 3), tire damage can be predicted; in practice, to reduce the requirement for frequency resolution, changes of the 5th to 10th orders are selected for analysis; when the absolute value of the decrease in frequency of the 5th to 10th orders meets the requirements for function value calculation, a conclusion on the health status of the tire is given, specifically including three levels: warning, pending disuse, and failure. Figure 4 As shown; analysis revealed that the natural frequencies of orders 5 to 10 change with the number of loading cycles as follows: Figure 4 As shown; the specific judgment index is the function value calculated by the following formula (1.1):

[0043]

[0044] In equation (1.1) above, F(i) is the calculated value of the tire health state under the i-th loading, n is the order of the natural frequency, and f n,i To obtain the value of the nth natural frequency by performing frequency domain analysis on the time-domain signal of the first principal strain acquired during the i-th loading, f n,0 The value of the nth natural frequency, f, is obtained by frequency domain analysis of the time-domain signal of the first principal strain acquired during the initial loading. 1,0 The first-order natural frequency is obtained by frequency domain analysis of the time-domain signal of the first principal strain acquired during initial loading. `sgn()` is the sign function; it takes the value 1 when the value inside the parentheses is positive, -1 when the value inside the parentheses is negative, and 0 when the value inside the parentheses is 0. Based on the calculated function values, three results are given: warning, pending shutdown, and failure. The specific relationship between the function values ​​and the health status assessment conclusion is shown below:

[0045]

[0046] Based on experimental experience, a failure warning is generally given, indicating that the tire will likely blow out during the next use. Furthermore, the experiment found that regardless of whether the final blowout occurred on the side facing the high-speed camera or the side away from it, the relationship between the change in its response frequency characteristics and the tire's health status satisfies the relationship between the function value and the health status assessment conclusion.

[0047] During aircraft takeoff and landing, tires rotate at high speed and come into contact with the ground, resulting in complex vibration behavior. Internal tire damage affects the overall characteristic response of the tire, and information on internal structural damage can be obtained by analyzing the tire's natural frequencies. Tire vibration behavior can be categorized by frequency into 0–20Hz, 20–300Hz, and greater than 300Hz. Within the 0–20Hz range, tire vibration behavior is similar to a spring, generally without vibration. Within the 20–300Hz range, tire vibration behavior is similar to a ring, mainly characterized by tread vibration, with simple patterns and distinct modes. Within the greater than 300Hz range, tire vibration behavior is similar to a cylinder, mainly characterized by sidewall and bending vibration, with complex vibration patterns influenced by various factors. Therefore, in this invention's method for health assessment of high-speed rotating objects based on changes in response frequency characteristics, the frequency analysis range is selected as 20–300Hz.

[0048] like Figure 5 As shown, the device for assessing the health status of a high-speed rotating object based on changes in structural response frequency characteristics mainly includes an aircraft take-off and landing equivalent experimental platform 1, an imaging device 2, a data analysis device, and a health status judgment system 3.

[0049] The aircraft takeoff and landing equivalent test platform 1 is used to simulate the takeoff and landing conditions of a floating aircraft, and to fix the rotation and movement of the test tire and drum. It includes a tire fixing device 11, a road surface simulation device 12, and a drum control device 13. The tire fixing device 11 is used to fix the tire in the position for each test so that it does not rotate or move. The road surface simulation device 12 is a drum that can rotate and translate, and its surface is covered with tracks that can simulate different road surface conditions. The drum control device 13 is used to control the relationship between the rotation and displacement of the drum and time and is electrically connected to the road surface simulation device 12.

[0050] The imaging device 2 is used to capture the changes in digital speckle morphology of the tire surface over loading time under different loading cycles. It includes an LED light source 21, a high-speed camera 22, a synchronization triggering device 23, and a data transfer station 24. The LED light source 21 provides auxiliary illumination to the tire during imaging, thereby assisting the high-speed camera 22 in achieving clear images with a high sampling rate. The high-speed camera 22 is used to image the tire; the tire undergoes significant deformation (large out-of-surface displacement) during the experiment. In this embodiment, the imaging device 2 uses two high-speed cameras 22, which makes the surface displacement field (strain field) more accurate. The synchronization triggering device 23 connects to both high-speed cameras 22 simultaneously, controlling the activation and synchronization of the two cameras. The data transfer station 24 stores the data captured by the two high-speed cameras 22 and transmits it to the data analysis device and health status assessment system 3. One end of the data transfer station is electrically connected to the two high-speed cameras 22 of the imaging device 2, and the other end is electrically connected to the data analysis device and health status assessment system 3.

[0051] The data analysis device and health status judgment system 3 are used to analyze the time domain signal and frequency characteristic changes of the response data, and to analyze the magnitude of the decrease in the value of the inherent frequency relative to the initial state, thereby giving a conclusion on the health status of the tire.

[0052] This invention is well-conceived. By simulating the real service environment of a tire, collecting the tire's response parameters, and analyzing the characteristic changes of these parameters, it can reflect internal tire damage and achieve a quantitative assessment of the tire's health status, thereby providing an early warning before tire damage occurs. This has significant engineering implications.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for health assessment of high-speed rotating objects based on changes in response frequency characteristics, characterized in that, The main steps include: 1) Construct an equivalent experimental platform for aircraft takeoff and landing and conduct experiments. The specific process is as follows: First, based on the relativity of motion, keep the tire in the equivalent experimental platform fixed. Then, a rotating drum with a larger radius on the side of the tire approaches the tire at a speed V and compresses it. Next, by changing the rotational speed and leftward movement speed of the drum over time, the process of aircraft takeoff and landing is reproduced. Tracks with different surface shapes are fixed to the outer surface of the drum on the right side of the aircraft to simulate different ground types. Digital speckle patterns for DIC analysis are pasted onto the surface of the tire on the left side of the aircraft. At the same time, two high-speed cameras are used to capture the changes of digital speckle patterns on the tire surface over time in real time. The selected tire needs to be repeatedly loaded until the tire bursts, and multiple sets of photos of the tire surface speckle changes over time are saved according to the number of loading cycles. 2) Obtain the time-domain signal of tire response using the DIC analysis method; the specific process is as follows: each loading of the selected tire is considered an experiment, and the photos of the tire surface speckle change over time obtained in this experiment are used as the experimental data for analysis. That is, the three-dimensional DIC analysis method is used to analyze the position on the tire surface that is at the same distance from the tire center each time, so as to obtain the time-domain signal of the first principal strain changing over time under each loading. 3) Analyze the frequency characteristics of the tire response time-domain signal; the specific process is as follows: use the fast Fourier transform analysis method to process the time-domain signal of the first principal strain obtained in step 2) under each loading, and obtain the frequency-domain signal of the response under each loading. The frequency-domain signal of the tire under each loading under different loading times contains the natural frequencies of different order responses. By comparing the values ​​of the same order natural frequencies under different loading times, the change of the value of each order natural frequency with the number of loading times can be obtained. 4) Give a conclusion on the health status of the tire; the specific process is as follows: based on the magnitude of the change in the absolute value of the decrease in response frequency obtained from step 3), make a prediction on the damage to the tire; select the changes of the 5th to 10th order for analysis, and when the absolute value of the decrease frequency of the 5th to 10th order meets the requirements of function value calculation, give a conclusion on the health status of the tire, which specifically includes three levels: warning, waiting to be stopped and failure. The specific criterion for judging the health status of the tire is the function value calculated by the following formula (1.1): （1.1）； In the above formula (1.1), For the first Calculated values ​​of tire health status under the next loading condition; The order of the natural frequency; For the first The frequency domain analysis of the time domain signal of the first principal strain acquired during the second loading was used to obtain the... The numerical value of the first natural frequency; The first principal strain was obtained by frequency domain analysis of the time domain signal acquired during the initial loading. The numerical value of the first natural frequency; The value of the first natural frequency is obtained by frequency domain analysis of the time domain signal of the first principal strain acquired during the initial loading. This is a sign function. When the value inside the parentheses is positive, it takes the value 1; when the value inside the parentheses is negative, it takes the value -1; and when the value inside the parentheses is 0, it takes the value 0. Based on the calculated function value, three results are given: warning, pending shutdown, and failure. The specific relationship between the function value and the health status assessment conclusion is shown below: ； Based on experimental experience, a failure warning is given, indicating that the tire will blow out during the next use; and regardless of whether the final blowout occurs on the side facing the high-speed camera or the side away from the high-speed camera, the relationship between the change in its response frequency characteristics and the tire health status satisfies the relationship between the function value and the health status assessment conclusion.

2. A device for assessing the health status of a high-speed rotating object based on changes in structural response frequency characteristics, based on the method for assessing the health status of a high-speed rotating object based on changes in response frequency characteristics as described in claim 1, characterized in that: The device includes an aircraft takeoff and landing equivalent experimental platform, a shooting device, and a data analysis device and a health status judgment system electrically connected to the shooting device. The aircraft takeoff and landing equivalent test platform is used to simulate the takeoff and landing conditions of a floating aircraft, and to fix the rotation and movement of the test tires and drums. The imaging device is matched and installed next to the aircraft take-off and landing equivalent test platform. It is used to capture the changes in digital speckle morphology of the tire surface with loading time under different loading cycles. The data analysis device is electrically connected to the imaging device and the health status judgment system. It is used to analyze the time domain signal and frequency characteristic changes of the response data and give a conclusion on the health status of the tire.

3. The device for assessing the health status of a high-speed rotating object based on changes in structural response frequency characteristics as described in claim 2, characterized in that: The aircraft takeoff and landing equivalent test platform includes a tire fixing device, a road surface simulation device, and a drum control device. The tire fixing device is used to fix the tire in this position for each experiment, preventing it from rotating or shifting. The road surface simulation device is matched and installed on one side of the tire fixing device. It is a drum wheel that can rotate and translate, and its surface is covered with a track that can simulate different road surface conditions. The drum control device is electrically connected to the road surface simulation device and is used to control the rotation and displacement of the drum over time.

4. The device for assessing the health status of a high-speed rotating object based on changes in structural response frequency characteristics as described in claim 2, characterized in that: The shooting device includes an LED light source, a high-speed camera, a synchronous triggering device, and a data relay station; The LED light source is used to provide auxiliary lighting for the tires during the shooting process, so as to help the high-speed camera achieve clear shooting with a high sampling rate; The high-speed camera is used to photograph the tires; The synchronization triggering device is electrically connected to the high-speed camera and is used to control the opening and synchronization triggering of the high-speed camera; The data transfer station is used to store the data captured by the high-speed camera and transmit it to the data analysis device and health status judgment system. One end of the station is electrically connected to the high-speed camera, and the other end is electrically connected to the data analysis device and health status judgment system. The data analysis device and health status judgment system are used to analyze the time domain signal and frequency characteristic changes of the response data, and to analyze the magnitude of the decrease in the value of the inherent frequency relative to the initial state, thereby giving a conclusion on the health status of the tire.

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