A TVS tube detection system and detection method

Abstract

The present invention discloses a TVS tube detection system and a detection method, including a TVS tube state analysis module, a clamping voltage comprehensive analysis module, and a breakdown voltage analysis module. The present invention relates to the technical field of electronic component detection, and solves the technical problem that the specific reasons for the abnormality of the TVS tube are not well analyzed, resulting in the need to re-analyze when troubleshooting the TVS tube later, which is time-consuming and laborious. By analyzing the working parameters of the TVS tube, the corresponding working state is judged, and abnormal analysis is carried out for the abnormal working state. By separately analyzing from two aspects of the clamping voltage and the breakdown voltage, and at the same time comprehensively analyzing the specific reasons for the abnormality according to the working parameters of the TVS tube itself, and further carrying out data analysis to locate and find the specific reasons, so as to facilitate subsequent maintenance according to the specific fault reasons, save the time for subsequent re-checking, and improve the efficiency of TVS tube maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic component detection, and particularly to a TVS tube detection system and a detection method. Background Art

[0002] A TVS tube is a high-efficiency protection device in the form of a diode. When the two poles of the TVS tube are subjected to a reverse transient high-energy impact, it can change the high impedance between its two poles into a low impedance at a speed of the order of 10 to the power of minus 12 seconds, absorb a surge power of up to several kilowatts, clamp the voltage between the two poles to a predetermined value, and effectively protect the precision components in the electronic circuit from being damaged by various surge pulses.

[0003] According to the application number CN201711036713.3, a TVS tube detection system and method are disclosed. The system includes a signal generator, an oscilloscope, and a processor; the signal generator is used to generate an ISO7637-5a standard pulse waveform and apply the ISO7637-5a standard pulse waveform to the input end of the TVS tube; the oscilloscope is used to read the output waveform at the output end of the TVS tube; the processor is used to determine the standard bearing energy of the TVS tube according to the trapezoidal area method and the standard test data of the TVS tube, determine the experimental bearing energy of the TVS tube according to the trapezoidal area method and the output waveform, and determine whether the TVS tube meets the standard according to the standard bearing energy and the experimental bearing energy.

[0004] The above patent judges whether the TVS tube meets the standard by calculating the bearing energy of the TVS tube. However, the above patent does not conduct a specific cause analysis for the detected unqualified situation, resulting in the need to recheck the fault when repairing the TVS tube later, which is time-consuming and laborious. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a TVS tube detection system and a detection method, which solve the problem that the specific reasons for the abnormality of the TVS tube are not well analyzed, resulting in the need to re-analyze when troubleshooting the TVS tube later, which is time-consuming and laborious.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: A TVS tube detection system includes:

[0007] A TVS tube data acquisition module, which is used to obtain the working parameters of the TVS tube and simultaneously transmit the obtained working parameters to the TVS tube state analysis module, where the working parameters include breakdown voltage, clamping voltage, and peak pulse power;

[0008] TVS tube status analysis module, which is used to judge the working status of the TVS tube according to the obtained working parameters, and generate a continuous monitoring signal and a cause analysis signal. The cause analysis signal includes: a clamping voltage analysis signal and a breakdown voltage analysis signal. At the same time, the clamping voltage analysis signal is transmitted to the clamping voltage comprehensive analysis module, and the breakdown voltage analysis signal is transmitted to the breakdown voltage analysis module;

[0009] Clamping voltage comprehensive analysis module, which is used to process the obtained clamping voltage analysis signal, identify and analyze the clamping voltage of the TVS tube, and comprehensively analyze the peak pulse power according to the corresponding calculation formula to obtain specific cause information. At the same time, the specific cause information is analyzed twice to obtain an analysis result, and the analysis result is transmitted to the detection information output module;

[0010] Breakdown voltage analysis module, which is used to process the obtained breakdown voltage analysis signal, compare the actual voltage value with the standard value and generate a periodic analysis signal and a voltage anomaly signal. At the same time, the periodic analysis signal is processed, and a voltage analysis result is generated by comprehensively analyzing the breakdown voltage periodic change situation and the number of anomalies. The voltage analysis result includes a breakdown voltage normal signal and a breakdown voltage anomaly signal. At the same time, the voltage analysis result is transmitted to the detection information output module.

[0011] As a further solution of the present invention: it further includes a detection information output module, which is used to transmit the obtained analysis result and voltage analysis result to the corresponding operator.

[0012] As a further solution of the present invention: the specific method for the TVS tube status analysis module to judge the TVS tube status according to the working parameters is:

[0013] Obtain the standard parameters corresponding to the normal operation of the TVS tube, and compare and judge the obtained standard parameters with the working parameters. When the working parameters are the same as the standard parameters, it means that the working status of the TVS tube is normal, and a continuous monitoring signal is generated. At the same time, the continuous monitoring signal is transmitted to the detection information output module. On the contrary, when the working parameters are different from the standard parameters, it means that the working status of the TVS tube is abnormal, and a cause analysis signal is generated.

[0014] As a further solution of the present invention: the specific method for the clamping voltage comprehensive analysis module to analyze the clamping voltage analysis signal to obtain specific cause information is:

[0015] Obtain the clamping in the breakdown state, and compare the obtained clamping voltage with the protection value. When the clamping voltage is lower than the protection value, it indicates that the TVS tube is abnormal and an abnormal signal is generated. On the contrary, when the clamping voltage is higher than the protection value, it indicates that the TVS tube is normal and a continuous monitoring signal is generated. At the same time, the continuous monitoring signal is transmitted to the detection information output module;

[0016] Then analyze the generated abnormal signal, and judge the specific cause according to the calculation formula. The specific calculation formula is And Vs is the peak pulse voltage, Vr is the minimum breakdown voltage, R is the internal resistance, Ps is the peak pulse power, Vc is the clamping voltage, and Ipp is the peak pulse current. The peak pulse power Ps and the internal resistance R are calculated according to the formula;

[0017] Compare the peak pulse power Ps and the internal resistance R with the normal values respectively. When the peak pulse power Ps is different from the normal value, specific cause information is generated. If the internal resistance R is different from the normal value, specific cause information is generated.

[0018] As a further solution of the present invention: The specific way for the clamping voltage comprehensive analysis module to analyze the specific cause information is:

[0019] Taking time t as a cycle, judge the fluctuation change situation of the specific cause within the time cycle t, obtain the number of fluctuation changes of the specific cause within the time cycle t, and calculate the fluctuation change occupancy ratio. Then compare the fluctuation change occupancy ratio with the threshold value. When the fluctuation occupancy ratio is greater than the threshold value, specific cause warning information is generated. When the fluctuation occupancy ratio is less than the threshold value, no processing is performed and normal monitoring information is generated.

[0020] As a further solution of the present invention: The specific way for the breakdown voltage analysis module to process the breakdown voltage analysis signal is:

[0021] Obtain the actual voltage value corresponding to the breakdown voltage analysis signal, and at the same time compare the actual voltage value with the standard value. When the actual voltage value is different from the standard value, it indicates that the actual voltage value is abnormal and a breakdown voltage abnormal signal is generated. At the same time, the voltage abnormal signal is transmitted to the detection information output module. When the actual voltage value is the same as the standard value, it indicates that the actual voltage value is not abnormal and a cycle analysis signal is generated. At the same time, the cycle analysis signal is processed.

[0022] As a further solution of the present invention: The specific way for the breakdown voltage analysis module to process the cycle analysis signal is:

[0023] Taking the time t as a period, obtain the change of the actual voltage value within the time period t, and determine whether the actual voltage value is abnormal. When there is a corresponding abnormal actual voltage value within the time period t, obtain the corresponding number of abnormal times. When there is no corresponding abnormal actual voltage value within the time period t, generate a breakdown voltage normal signal;

[0024] Calculate the corresponding abnormal occupancy ratio according to the obtained number of abnormal times, and compare the abnormal occupancy ratio with a preset value. When the abnormal occupancy ratio is greater than the preset value, generate a breakdown voltage abnormal signal. On the contrary, when the abnormal occupancy ratio is less than the preset value, generate a breakdown voltage normal signal.

[0025] A method for detecting a TVS tube, which specifically includes the following steps:

[0026] S1: Judge the working state of the TVS tube according to the obtained working parameters, and generate a continuous monitoring signal and a cause analysis signal, where the cause analysis signal includes a clamping voltage analysis signal and a breakdown voltage analysis signal;

[0027] S2: Process the obtained clamping voltage analysis signal. Identify and analyze the clamping voltage of the TVS tube, and comprehensively analyze the peak pulse power according to the corresponding calculation formula to obtain specific cause information, and at the same time perform secondary analysis on the specific cause information to obtain an analysis result;

[0028] S3: Process the breakdown voltage analysis signal. Compare the actual voltage value with the standard value to generate a periodic analysis signal and a voltage abnormal signal. At the same time, process the periodic analysis signal. Perform comprehensive analysis according to the breakdown voltage periodic change situation and the number of abnormal times to generate a voltage analysis result, and the voltage analysis result includes a breakdown voltage normal signal and a breakdown voltage abnormal signal;

[0029] S4: Display the obtained analysis result and voltage analysis result to the operator.

[0030] The present invention provides a TVS tube detection system and a detection method. Compared with the prior art, it has the following

[0031] Beneficial effects:

[0032] By analyzing the working parameters of the TVS tube, the present invention judges the corresponding working state, and performs abnormal analysis for the case of abnormal working state. Through separate analysis from two aspects of the clamping voltage and the breakdown voltage, and at the same time comprehensively analyzes the specific reasons for the abnormality according to the working parameters of the TVS tube itself, and further performs data analysis to locate and find the specific reasons, so as to facilitate subsequent maintenance according to the specific fault reasons, save the time for subsequent re-checking, and improve the maintenance efficiency of the TVS tube. Description of the Drawings

[0033] Figure 1 This is the system principle block diagram of the present invention;

[0034] Figure 2 This is the method diagram of the present invention. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Embodiment 1. Please refer to Figure 1 , this application provides a TVS tube detection system, including a TVS tube data acquisition module, a TVS tube status analysis module, a breakdown voltage analysis module, a clamping voltage comprehensive analysis module, and a detection information output module.

[0037] The TVS tube data acquisition module is used to obtain the working parameters of the TVS tube and simultaneously transmit the obtained working parameters to the TVS tube status analysis module, where the working parameters include breakdown voltage, clamping voltage, and peak pulse power.

[0038] The TVS tube status analysis module is used to judge the working status of the TVS tube according to the obtained working parameters and generate a continuous monitoring signal and a cause analysis signal, where the cause analysis signal includes: a clamping voltage analysis signal and a breakdown voltage analysis signal. At the same time, the clamping voltage analysis signal is transmitted to the clamping voltage comprehensive analysis module, and the breakdown voltage analysis signal is transmitted to the breakdown voltage analysis module. The specific method for judging the working status of the TVS tube is as follows:

[0039] Obtain the standard parameters corresponding to the normal operation of the TVS tube, and here the standard parameters are the data corresponding to the normal operation of the TVS tube. Compare and judge the obtained standard parameters with the working parameters. When the working parameters are the same as the standard parameters, it means that the working status of the TVS tube is normal, and a continuous monitoring signal is generated and transmitted to the detection information output module. On the contrary, when the working parameters are different from the standard parameters, it means that the working status of the TVS tube is abnormal, and a cause analysis signal is generated. Specifically, here the same and different mean that the difference between the standard parameters and the working parameters is within the allowable range. At the same time, the cause analysis signal here includes a clamping voltage analysis signal and a breakdown voltage analysis signal.

[0040] Clamping voltage comprehensive analysis module, which is used to process the obtained clamping voltage analysis signal, identify and analyze the clamping voltage of the TVS tube, comprehensively analyze the peak pulse power according to the corresponding calculation formula to obtain specific cause information, and perform secondary analysis on the specific cause information to obtain the analysis result, and transmit the analysis result to the detection information output module, and the specific way to generate the analysis result is as follows:

[0041] Obtain the clamping in the breakdown state, and compare the obtained clamping voltage with the protection value. When the clamping voltage is lower than the protection value, it indicates that the TVS tube is abnormal and an abnormal signal is generated. On the contrary, when the clamping voltage is higher than the protection value, it indicates that the TVS tube is normal and a continuous monitoring signal is generated, and at the same time, the continuous monitoring signal is transmitted to the detection information output module;

[0042] Then analyze the generated abnormal signal, and judge the specific cause of the abnormality according to the calculation formula. The specific calculation formula is And Vs is the peak pulse voltage, Vr is the minimum breakdown voltage, R is the internal resistance, Ps is the peak pulse power, Vc is the clamping voltage, and Ipp is the peak pulse current. The peak pulse power Ps and the internal resistance R are calculated according to the formula;

[0043] Specifically, according to the definition, the pulse peak power can be calculated by the following formula:

[0044] Ppk=K1×K2×Ipp×Vcmax÷K3

[0045] Where K1 is the power coefficient, K2 is the temperature coefficient, and K3 is the time coefficient.

[0046] In actual selection, a simplified formula is often used to estimate the required TVS tube power: P PK(simplified) =Vc×Ipp. For example, for the TVS diode of model 15KP48A, assuming that a DC circuit needs to use a TVS diode for surge protection, taking 15KP48A as an example, its main parameters include:

[0047] Maximum reverse working voltage: 48V, breakdown voltage: minimum 53.6V, maximum 58.7V, maximum peak pulse current: 194.3A, maximum clamping voltage: 77.7V. According to the above parameters, the maximum surge point power of this TVS diode can be calculated as P {PK(simplified)} =77.7V×194.3A≈15KW.

[0048] Compare the peak pulse power \(P_s\) and the internal resistance \(R\) with their normal values respectively. The normal values are the corresponding values under the normal operating conditions of the TVS diode, and the specific values of the normal values are set according to different models of TVS diodes. If the peak pulse power \(P_s\) is different from the normal value, it means that the abnormal peak pulse power causes a change in the clamping voltage and generates specific cause information. If the internal resistance \(R\) is different from the normal value, it means that the abnormal internal resistance \(R\) causes a change in the clamping voltage and generates specific cause information. And the specific cause information generated here includes abnormal peak pulse power or abnormal internal resistance.

[0049] Then, for the obtained specific cause information, and here the specific cause can be expressed as peak pulse power or internal resistance, perform a secondary analysis on the specific cause corresponding to the specific cause information. Taking time \(t\) as a cycle, judge the fluctuation change situation of the specific cause within the time cycle \(t\), obtain the number of fluctuation changes of the specific cause within the time cycle \(t\). The specific number of fluctuation changes is expressed as the number of times when the fluctuation difference is greater than the preset value, and the value of the preset value is set by the operator, and calculate the fluctuation change occupancy ratio. Then compare the fluctuation change occupancy ratio with the threshold value. The specific value of the threshold value is set by the operator according to the actual situation. When the fluctuation occupancy ratio is greater than the threshold value, generate specific cause warning information. When the fluctuation occupancy ratio is less than the threshold value, do not process and generate normal monitoring information.

[0050] Detection information output module, which is used to transmit the obtained analysis result to the corresponding operator.

[0051] Embodiment 2. As Embodiment 2 of the present invention, this embodiment is implemented on the basis of Embodiment 1, and the difference from Embodiment 1 is as follows.

[0052] Breakdown voltage analysis module, which is used to process the obtained breakdown voltage analysis signal. By comparing the actual voltage value with the standard value, generate a periodic analysis signal and a voltage anomaly signal, and at the same time process the periodic analysis signal. Perform a comprehensive analysis based on the periodic change situation and the number of anomalies of the breakdown voltage to generate a voltage analysis result. And the voltage analysis result includes a breakdown voltage normal signal and a breakdown voltage anomaly signal. At the same time, transmit the voltage analysis result to the detection information output module. And the specific way to generate the voltage analysis result is as follows:

[0053] Obtain the actual voltage value corresponding to the breakdown voltage analysis signal, and at the same time compare the actual voltage value with the standard value. The standard value usually represents the ideal voltage value of the TVS tube under normal working conditions. When the actual voltage value is different from the standard value, it means that the actual voltage value is abnormal, and a breakdown voltage abnormal signal is generated. At the same time, the voltage abnormal signal is transmitted to the detection information output module. When the actual voltage value is the same as the standard value, it means that the actual voltage value is normal, and a period analysis signal is generated. The period analysis signal generated here indicates that the actual voltage measured at the current time point is normal and subsequent period analysis is required;

[0054] Process the generated period analysis signal. Taking time t as the period, obtain the change of the actual voltage value within the time period t, and judge whether the actual voltage value is abnormal. The abnormality here means the situation different from the standard value. When there is an abnormal actual voltage value within the time period t, obtain the corresponding number of abnormal times. When there is no abnormal actual voltage value within the time period t, generate a breakdown voltage normal signal;

[0055] Calculate the corresponding abnormal ratio according to the obtained number of abnormal times, and compare the abnormal ratio with the preset value. The preset value here is the preset value of the abnormal ratio, and the specific value is set by the operator according to the actual situation. When the abnormal ratio is greater than the preset value, it means that the breakdown voltage is unstable within the time period, and a breakdown voltage abnormal signal is generated. On the contrary, when the abnormal ratio is less than the preset value, it means that the breakdown voltage is stable within the time period, and a breakdown voltage normal signal is generated.

[0056] The detection information output module is used to display the obtained analysis results to the corresponding operator.

[0057] Embodiment 3. As Embodiment 3 of the present invention, the key lies in combining the implementation processes of Embodiment 1 and Embodiment 2.

[0058] Embodiment 4. Please refer to Figure 2 , a TVS tube detection method, which specifically includes the following steps:

[0059] S1: Judge the working state of the TVS tube according to the obtained working parameters, and generate a continuous monitoring signal and a cause analysis signal. The cause analysis signal includes a clamping voltage analysis signal and a breakdown voltage analysis signal, and the analysis method here is the same as the processing method of the TVS tube state analysis module in Embodiment 1;

[0060] S2: Process the obtained clamping voltage analysis signal. Identify and analyze the clamping voltage of the TVS tube, and comprehensively analyze the peak pulse power according to the corresponding calculation formula to obtain the specific cause information. At the same time, perform a secondary analysis on the specific cause information to obtain the analysis result. The processing method here is the same as that of the clamping voltage comprehensive analysis module in Embodiment 1.

[0061] S3: Process the breakdown voltage analysis signal. Compare the actual voltage value with the standard value to generate a periodic analysis signal and a voltage anomaly signal. At the same time, process the periodic analysis signal, and comprehensively analyze according to the periodic change situation of the breakdown voltage and the number of anomalies to generate a voltage analysis result. The voltage analysis result includes a breakdown voltage normal signal and a breakdown voltage anomaly signal. The processing method here is the same as that of the breakdown voltage analysis module in Embodiment 2.

[0062] S4: Display the obtained analysis result and voltage analysis result to the operator.

[0063] Some of the data in the above formula are numerically calculated after removing their dimensions. At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0064] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical method of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A TVS tube detection system, characterized in that: include: TVS tube data acquisition module, which is used to obtain the working parameters of the TVS tube and transmit the obtained working parameters to the TVS tube state analysis module, where the working parameters include breakdown voltage, clamping voltage and peak pulse power; A TVS tube state analysis module, which is used to judge the working state of the TVS tube according to the obtained working parameters, and generate a continuous monitoring signal and a cause analysis signal, wherein the cause analysis signal includes: a clamping voltage analysis signal and a breakdown voltage analysis signal, and at the same time transmits the clamping voltage analysis signal to the clamping voltage comprehensive analysis module, and transmits the breakdown voltage analysis signal to the breakdown voltage analysis module; The clamping voltage comprehensive analysis module is used to process the obtained clamping voltage analysis signal, obtain the clamping in the breakdown state, and compare the obtained clamping voltage with the protection value. When the clamping voltage is lower than the protection value, it indicates that the TVS tube is abnormal and generates an abnormal signal. On the contrary, when the clamping voltage is higher than the protection value, it indicates that the TVS tube is normal and generates a continuous monitoring signal. At the same time, the continuous monitoring signal is transmitted to the detection information output module; Then analyze the generated abnormal signal and determine the specific cause of the abnormality according to the calculation formula. The specific calculation formula is: , and Vs is the peak pulse voltage, Vr is the minimum breakdown voltage, R is the internal resistance, Ps is the peak pulse power, Vc is the clamping voltage, Ipp is the peak pulse current, and the peak pulse power Ps and the internal resistance R are calculated according to the formula; The peak pulse power Ps and the internal resistance R are compared with normal values ​​respectively. When the peak pulse power Ps is different from the normal value, specific cause information is generated. If the internal resistance R is different from the normal value, specific cause information is generated and analyzed. Taking time t as a period, the fluctuation change of the specific cause within the time period t is judged, the number of fluctuation changes of the specific cause within the time period t is obtained, and the fluctuation change ratio is calculated, and then the fluctuation change ratio is compared with the threshold. When the fluctuation ratio is greater than the threshold, a specific cause warning information is generated. When the fluctuation ratio is less than the threshold, no processing is performed and normal monitoring information is generated; The breakdown voltage analysis module is used to process the acquired breakdown voltage analysis signal by comparing the actual voltage value with the standard value and generating a periodic analysis signal and a voltage abnormality signal. The periodic analysis signal is processed at the same time, and a voltage analysis result is generated based on a comprehensive analysis of the breakdown voltage periodic changes and the number of abnormalities. The voltage analysis result includes a normal breakdown voltage signal and an abnormal breakdown voltage signal. The voltage analysis result is transmitted to the detection information output module at the same time.

2. A TVS tube detection system according to claim 1, characterized in that: It also includes a detection information output module for transmitting the acquired analysis results and voltage analysis results to corresponding operators.

3. A TVS tube detection system according to claim 1, characterized in that: The specific method in which the TVS tube state analysis module judges the TVS tube state according to the working parameters is: The standard parameters corresponding to the normal operation of the TVS tube are obtained, and the obtained standard parameters are compared with the working parameters. When the working parameters are the same as the standard parameters, it means that the working state of the TVS tube is normal, and a continuous monitoring signal is generated. At the same time, the continuous monitoring signal is transmitted to the detection information output module. On the contrary, when the working parameters are different from the standard parameters, it means that the working state of the TVS tube is abnormal, and a cause analysis signal is generated.

4. A TVS tube detection system according to claim 1, characterized in that: The specific method in which the breakdown voltage analysis module processes the breakdown voltage analysis signal is as follows: The actual voltage value corresponding to the breakdown voltage analysis signal is obtained, and the actual voltage value is compared with the standard value. When the actual voltage value is different from the standard value, it indicates that the actual voltage value is abnormal, and a breakdown voltage abnormality signal is generated. The voltage abnormality signal is transmitted to the detection information output module. When the actual voltage value is the same as the standard value, it indicates that the actual voltage value is not abnormal, and a period analysis signal is generated and processed.

5. A TVS tube detection system according to claim 4, characterized in that: The specific way in which the breakdown voltage analysis module processes the periodic analysis signal is as follows: Taking time t as a period, the change of the actual voltage value within the time period t is obtained, and it is judged whether the actual voltage value is abnormal. When the corresponding actual voltage value is abnormal within the time period t, the corresponding abnormal number is obtained. When the corresponding actual voltage value is not abnormal within the time period t, a breakdown voltage normal signal is generated; The corresponding abnormality ratio value is calculated according to the obtained abnormal number, and the abnormality ratio value is compared with the preset value. When the abnormality ratio value is greater than the preset value, a breakdown voltage abnormal signal is generated. Conversely, when the abnormality ratio value is less than the preset value, a breakdown voltage normal signal is generated.

6. A TVS tube detection method, applied to a TVS tube detection system according to any one of claims 1 to 5, characterized in that: The method specifically comprises the following steps: S1: judging the working state of the TVS tube according to the obtained working parameters, and generating a continuous monitoring signal and a cause analysis signal, wherein the cause analysis signal includes a clamping voltage analysis signal and a breakdown voltage analysis signal; S2: Processing the obtained clamping voltage analysis signal, identifying and analyzing the clamping voltage of the TVS tube, and comprehensively analyzing the peak pulse power according to the corresponding calculation formula to obtain specific cause information, and performing secondary analysis on the specific cause information to obtain the analysis result; S3: Processing the breakdown voltage analysis signal, by comparing the actual voltage value with the standard value and generating a periodic analysis signal and a voltage abnormality signal, and processing the periodic analysis signal at the same time, performing a comprehensive analysis based on the breakdown voltage periodic variation and the number of abnormalities to generate a voltage analysis result, and the voltage analysis result includes a normal breakdown voltage signal and an abnormal breakdown voltage signal; S4: Display the obtained analysis results and voltage analysis results to the operator.

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