A full-performance electromagnetic compatibility immunity automated testing method and system

Abstract

The present invention proposes a full-performance electromagnetic compatibility immunity automated test method and system, which relates to the field of electronic equipment testing technology. Through real-time monitoring and data preprocessing, combined with dynamic modulation functions and recursive coupling models, electromagnetic interference signals and their propagation characteristics are accurately simulated, and the test accuracy and reliability are improved; by introducing a global feedback mechanism and disturbance integral, the immunity evaluation is dynamically optimized to ensure the stable response of the tested equipment under various interferences, and the comprehensiveness of the evaluation is enhanced. In addition, the present invention is also designed with an adaptive dynamic response model, which enables the test system to dynamically adapt to the response changes of the equipment by adaptively adjusting the test parameters, improves the test efficiency and reduces errors, and shows the advantages of high efficiency and accuracy in electromagnetic compatibility testing.

Description

Technical Field

[0001] The invention relates to a full-performance electromagnetic compatibility immunity automatic testing method and system, belonging to the technical field of electronic equipment testing. Background Art

[0002] With the increasing popularity of electronic devices and systems, electromagnetic compatibility issues have become a key link in product design and testing. Electromagnetic compatibility refers to the ability of a device or system to work properly in the expected electromagnetic environment and not cause unacceptable electromagnetic interference to other devices in the environment. Electromagnetic compatibility immunity testing is an important means to evaluate the performance of equipment under electromagnetic interference.

[0003] For example, the Chinese invention patent with announcement number CN117434372B discloses an electromagnetic compatibility immunity test method and system for electronic products, which is used to improve the accuracy of electromagnetic compatibility immunity test of electronic products. The method includes: determining the electromagnetic field strength distribution interval based on the target test environment, and performing immunity test and data analysis on the target electronic product to obtain target immunity test data; performing relationship modeling on the electromagnetic field strength distribution interval and the target immunity test data to obtain the immunity relationship data model; performing electronic product failure threshold identification to obtain the electronic product failure threshold; performing immunity cumulative degradation calculation to obtain the immunity cumulative degradation; encoding and mapping the electronic product failure threshold and the immunity cumulative degradation to generate a target immunity evaluation vector; inputting the target immunity evaluation vector into a preset standard electromagnetic performance model to perform electromagnetic performance analysis of the electronic product to obtain the target immunity test result. The invention can comprehensively evaluate the electromagnetic compatibility performance of electronic products through detailed test steps and data processing methods. However, this invention relies on pre-set test parameters, such as the electromagnetic field intensity distribution interval and gradient sub-interval. In practical applications, it is difficult to accurately simulate complex dynamic electromagnetic environments. Moreover, this invention lacks the ability to adjust the dynamic response of the device in real time and cannot effectively deal with the nonlinear changes of the device under different electromagnetic interferences. Therefore, it is difficult to accurately evaluate the anti-interference ability of the device.

[0004] Therefore, there is an urgent need for an automated test of electromagnetic compatibility immunity with higher accuracy and reliability that can be performed in complex electromagnetic environments. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention proposes a full-performance electromagnetic compatibility immunity automatic testing method and system.

[0006] The technical solution of the present invention is as follows:

[0007] On the one hand, the present invention provides a full-performance electromagnetic compatibility immunity automated testing method, the method comprising:

[0008] Conduct interference tests on the EMC equipment under test under different electromagnetic environment conditions, monitor the response parameters of the EMC equipment under test and the electromagnetic field strength of each test point in real time, and obtain monitoring data;

[0009] Based on the monitoring data, the electromagnetic interference signal is quantified using a dynamic modulation function; based on the quantified electromagnetic interference signal, the electromagnetic field strength between the test points is simulated using a recursive coupling model;

[0010] Based on the electromagnetic field strength between the test points, the overall anti-disturbance effect of the tested electromagnetic compatibility device is calculated by disturbance integration, and a global feedback mechanism is introduced to dynamically adjust the electromagnetic field strength of the test points to obtain the updated electromagnetic field strength of each test point after feedback;

[0011] Design an adaptive dynamic response model based on the updated electromagnetic field strength feedback from each test point to obtain the overall response of the electromagnetic compatibility device under test;

[0012] Compare the overall response of the EMC device under test with the target immunity value to confirm whether the EMC device under test meets the full EMC performance requirements. If not, perform interference tests repeatedly until the full performance requirements are met.

[0013] As a preferred implementation manner of the present invention, the monitoring data includes response parameter data and electromagnetic field intensity data after data preprocessing, and the data preprocessing includes noise removal, data alignment and data normalization processing.

[0014] As a preferred embodiment of the present invention, based on the monitoring data, the electromagnetic interference signal is quantified using a dynamic modulation function, specifically analyzing the monitoring data to obtain the time-varying characteristics of the interference source, using a dynamic modulation function to describe the time-varying characteristics of the interference source, and quantifying the electromagnetic interference signal, which is expressed as follows:

[0015] ;

[0016] In the formula, For the electromagnetic compatibility equipment under test The interference signal strength at the moment, is the maximum electromagnetic field strength of the interference signal; is the frequency of the interference signal; is the phase of the interference signal; Controlled the decay rate of the interference signal over time; is the dynamic modulation coefficient; is the frequency of the interference signal amplitude modulation.

[0017] As a preferred embodiment of the present invention, the recursive coupling model is constructed based on the propagation delay effect of the electromagnetic wave and the frequency modulation characteristics of the interference signal, and is expressed as follows:

[0018] ;

[0019] In the formula, For the The test points are The electromagnetic field strength at the time; For the The set of nodes adjacent to the test point; For the The test points and The coupling coefficient between the test points; is the base of natural logarithms; is the attenuation coefficient of electromagnetic field propagation; is the time-integrated variable; is the frequency modulation coefficient of the electromagnetic field modulation at the test point caused by the change of the interference signal; The interference signal is The test points and The phase difference between the test points; For the The test points are The electromagnetic field strength at the moment.

[0020] As a preferred embodiment of the present invention, based on the electromagnetic field strength between the test points, the overall anti-interference effect of the electromagnetic compatibility device under test is calculated by disturbance integration and expressed as follows:

[0021] ;

[0022] In the formula, For The overall anti-disturbance effect at all times; is the time period of the interference signal; is the number of test points; is the time differential of the interference signal; For the The response coefficient of each test point.

[0023] As a preferred embodiment of the present invention, a global feedback mechanism is introduced to dynamically adjust the electromagnetic field strength of the test point, and the electromagnetic field strength after feedback update of each test point is obtained, which is expressed as:

[0024] ;

[0025] In the formula, For the The electromagnetic field strength of each test point after feedback update; For the Feedback adjustment coefficient for each test point; is the predetermined target immunity value.

[0026] As a preferred implementation of the present invention, the adaptive dynamic response model combines the electromagnetic field strength of each test point and the overall response of the electromagnetic compatibility device under test, and is expressed as follows:

[0027] ;

[0028] In the formula, It is the overall response of the EMC device under test; For the Response adjustment coefficient for each test point; For the The impact adjustment coefficient of each test point.

[0029] On the other hand, the present invention also provides a full-performance electromagnetic compatibility immunity automatic test system, the system includes a test environment simulation module, a real-time data acquisition module, an electromagnetic interference quantification module, an electromagnetic field distribution simulation module, an immunity analysis and feedback module, a response model optimization module and a result judgment and iteration module, wherein:

[0030] The test environment simulation module is used to simulate different electromagnetic environment conditions to perform interference tests on the device under test;

[0031] The real-time data acquisition module is used to monitor the response parameters of the device under test and the electromagnetic field strength of the test point in real time, and record the monitoring data;

[0032] The electromagnetic interference quantification module is used to quantify the electromagnetic interference signal based on the monitoring data using a dynamic modulation function, specifically analyzing the monitoring data to obtain the time-varying characteristics of the interference source, using a dynamic modulation function to describe the time-varying characteristics of the interference source, and quantifying the electromagnetic interference signal, which is expressed as follows:

[0033] ;

[0034] In the formula, For the electromagnetic compatibility equipment under test The interference signal strength at the moment, is the maximum electromagnetic field strength of the interference signal; is the frequency of the interference signal; is the phase of the interference signal; Controlled the decay rate of the interference signal over time; is the dynamic modulation coefficient; is the frequency of the interference signal amplitude modulation;

[0035] The electromagnetic field distribution simulation module is used to simulate the electromagnetic field strength between test points based on the quantized electromagnetic interference signal using a recursive coupling model. The recursive coupling model is constructed based on the propagation delay effect of the electromagnetic wave and the frequency modulation characteristics of the interference signal, and is expressed as follows:

[0036] ;

[0037] In the formula, For the The test points are The electromagnetic field strength at the time; For the The set of nodes adjacent to the test point; For the The test points and The coupling coefficient between the test points; is the base of natural logarithms; is the attenuation coefficient of electromagnetic field propagation; is the time-integrated variable; is the frequency modulation coefficient of the electromagnetic field modulation at the test point caused by the change of the interference signal; The interference signal is The test points and The phase difference between the test points; For the The test points are The electromagnetic field strength at the time;

[0038] The anti-interference analysis and feedback module is used to calculate the overall anti-interference effect of the electromagnetic compatibility device under test through disturbance integration based on the electromagnetic field strength between the test points, and introduce a global feedback mechanism to dynamically adjust the electromagnetic field strength of the test points to obtain the electromagnetic field strength after feedback update of each test point;

[0039] The response model optimization module is internally provided with an adaptive dynamic response model designed in combination with the electromagnetic field strength updated after feedback from each test point, so as to obtain the overall response of the electromagnetic compatibility device under test;

[0040] The result determination and iteration module is used to compare the overall response of the tested electromagnetic compatibility device with the target immunity value to confirm whether the tested electromagnetic compatibility device meets the full electromagnetic compatibility performance requirements. If not, interference testing is repeatedly performed until the full performance requirements are met.

[0041] On the other hand, this embodiment also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, a full-performance electromagnetic compatibility immunity automated testing method as described in any embodiment of the present invention is implemented.

[0042] On the other hand, the present embodiment further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a full-performance electromagnetic compatibility immunity automated testing method as described in any embodiment of the present invention.

[0043] The present invention has the following beneficial effects:

[0044] 1. The present invention is a full-performance electromagnetic compatibility immunity automatic test method and system. Through nonlinear interference source modeling and dynamic modulation function, it can simulate electromagnetic interference characteristics of different frequency ranges, different interference types and multiple dimensions, and truly reproduce the electromagnetic interference in the actual use environment. The test results are not only close to the actual application scenarios, but also can ensure the authenticity and global consistency of the device response;

[0045] 2. The present invention is a full-performance electromagnetic compatibility immunity automatic test method and system. Through real-time monitoring data and adaptive dynamic response model, the test process is fully automated, and the test parameters can be adjusted in real time to dynamically adapt to the response changes of the equipment, thereby improving the test efficiency and accuracy, while avoiding the errors that may be caused by manual adjustment, and ensuring the high repeatability and reliability of the test results;

[0046] 3. The present invention is a full-performance electromagnetic compatibility immunity automated testing method and system. Through recursive coupling model and disturbance integral, dynamic feedback adjustment is performed on the electromagnetic field strength of the test point, and the global disturbance effect and the overall response characteristics of the equipment are comprehensively analyzed, avoiding misjudgment caused by local characteristics or individual parameter abnormalities, and ensuring the comprehensiveness and reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 The figure is a flow chart of the method of the present invention. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] It should be understood that the step numbers used in this document are only for convenience of description and are not intended to limit the order in which the steps are executed.

[0050] It should be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0051] The terms “include” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0052] The term "and / or" means and includes any and all possible combinations of one or more of the associated listed items.

[0053] Embodiment 1:

[0054] See also Figure 1 This embodiment provides a full-performance electromagnetic compatibility immunity automated testing method, including the following steps:

[0055] S1. Use the test system to perform interference tests on the EMC device under different electromagnetic environment conditions, monitor the response parameters of the EMC device and the electromagnetic field strength of each test point in real time, and obtain monitoring data;

[0056] S11, real-time monitoring of the response parameters of the electromagnetic compatibility device under test, so as to evaluate the working state of the device under different electromagnetic disturbances, wherein the response parameters of the electromagnetic compatibility device under test include key electrical parameters such as current, voltage, power, etc. in the electromagnetic compatibility device under test;

[0057] S12. Real-time monitoring of the electric field and magnetic field strength of each test point by electromagnetic field sensors (such as field strength probes, oscillators, etc.). The test point refers to the area or part of the electromagnetic compatibility device under test (such as an electric energy meter) that has significant electromagnetic characteristics or produces a key response under electromagnetic interference. It can be an interface, connection point, key circuit module, shielding component, or a specific point on the transmission path inside the device;

[0058] S13. The response parameters of the electromagnetic compatibility equipment under test and the electromagnetic field strength are precisely matched, and an integrated data monitoring network is established. The data monitoring network is preprocessed to obtain monitoring data, wherein the data preprocessing includes noise removal, data alignment and data normalization processing to ensure the reliability and accuracy of subsequent analysis. For example, the noise removal of the electric field strength and magnetic field strength output by the sensor includes processing steps such as signal amplification and filtering to eliminate noise and interference and ensure the purity of the signal.

[0059] The monitoring data is the starting point of the entire test method process, especially the changes in the electric field and magnetic field strength, which directly reflects the electromagnetic interference to which the electromagnetic compatibility device under test is subjected during operation.

[0060] S2. quantifying the electromagnetic interference signal using a dynamic modulation function based on the monitoring data;

[0061] S21. By monitoring the electric field and magnetic field strengths of each test point of the EMC device under test, it can be found that the electromagnetic field strength in some areas will fluctuate over time. This fluctuation is usually a manifestation of electromagnetic interference. For example, the electric field strength of a certain test point is 10 V / m during normal operation, but suddenly rises to 50 V / m at a certain moment. This may be due to external electromagnetic interference or interference generated by the device itself. The change in the response parameter of the EMC device under test is correlated with the change in the electromagnetic field strength. For example, when the electric field strength of a certain test point suddenly increases, the current of the EMC device under test may also fluctuate abnormally, indicating that electromagnetic interference directly affects the normal operation of the EMC device under test.

[0062] S22. The interference generated by the electromagnetic compatibility device under test is obtained through analysis of the monitoring data. Furthermore, the electromagnetic compatibility device has time-varying amplitude, frequency and phase characteristics, and will show nonlinear changes at different time points. The amplitude, frequency and other characteristics of the electromagnetic compatibility device interference signal vary in time and space. In order to accurately describe the various interferences in the electromagnetic compatibility device, a dynamic modulation function is used to describe the time-varying characteristics of the interference source. The dynamic modulation function can be adjusted according to the response of the device, so as to truly reflect the impact of the interference signal on the device at different times.

[0063] Therefore, based on the interference generated by the electromagnetic compatibility device under test, the electromagnetic interference signal is quantified and expressed as follows:

[0064] ;

[0065] In the formula, For the electromagnetic compatibility equipment under test The interference signal strength at the moment, is the maximum electromagnetic field strength of the interference signal; is the frequency of the interference signal, which reflects the number of oscillations of the interference signal per unit time and is obtained by setting the frequency of the signal source or by experimental measurement; is the phase of the interference signal, reflecting the initial offset of the signal; The attenuation rate of the interference signal over time is controlled, and the phenomenon of signal attenuation over time can be simulated; is the dynamic modulation coefficient, which controls the change of signal amplitude over time; is the frequency of the interference signal amplitude modulation, which reflects the periodicity of the signal amplitude change.

[0066] This embodiment can simulate the nonlinear modulation effect of the interference source by constructing a dynamic modulation function, so that the electromagnetic interference signal is more consistent with the actual electromagnetic environment.

[0067] S3, based on the quantified electromagnetic interference signal, the recursive coupling model is used to simulate the electromagnetic field strength between the test points;

[0068] During the test, for each test point of the electromagnetic compatibility device under test, a recursive coupling model is used to simulate the electromagnetic field strength between the test points. The electromagnetic field strength of each test point is not only affected by its own electromagnetic characteristics, but also by the electromagnetic coupling between adjacent test points. In order to effectively express the nonlinear coupling relationship, a recursive equation is designed so that the electromagnetic field strength of each test point can be updated by the field strength of its adjacent test points. The recursive coupling model not only considers the propagation delay effect of electromagnetic waves, but also introduces the frequency modulation characteristics of interference signals, so as to more realistically simulate the response of the device in a complex electromagnetic environment. The recursive relationship of the electromagnetic field strength between test points is expressed as follows:

[0069] ;

[0070] In the formula, For the The test points are The electromagnetic field strength at the time; For the The set of nodes adjacent to the test point; For the The test points and The coupling coefficient between the test points reflects the electromagnetic coupling strength between the two test points and is obtained through electromagnetic field simulation and experimental measurement; is the base of natural logarithms, also known as Euler's number, and its value is approximately 2.71828; It is the attenuation coefficient of electromagnetic field propagation, which describes the energy attenuation of electromagnetic waves caused by environmental factors during propagation. It is obtained through electromagnetic field propagation theory (such as electromagnetic wave propagation formula) or measured results. is the time-integrated variable; The frequency modulation coefficient of the electromagnetic field modulation at the test point caused by the change of the interference signal is obtained by measuring the frequency modulation characteristics of the interference signal; The interference signal is The test points and The phase difference between the test points is For the The test points are The electromagnetic field strength at the moment.

[0071] The integral term in the formula reflects the propagation delay characteristics of the electromagnetic field, while the sine term takes into account the impact of the change in frequency of the interference signal on the field strength at the test point. Through recursive calculation, the global response of the device in a complex electromagnetic environment can be simulated.

[0072] S4. Based on the electromagnetic field strength between the test points, the overall anti-disturbance effect of the tested electromagnetic compatibility device is calculated by disturbance integration, and a global feedback mechanism is introduced to dynamically adjust the electromagnetic field strength of the test points;

[0073] S41. Considering the comprehensive effect of the electromagnetic field strength at the test point, the electromagnetic field strength information of each node is converted into the anti-interference evaluation of the whole system by means of disturbance integration. The integration not only involves the electromagnetic field strength of each test point, but also needs to consider the modulation effect of the interference signal on the test point, so as to better reflect the anti-interference characteristics of the electromagnetic compatibility device under test at different times. The overall anti-interference effect is expressed by the formula:

[0074] ;

[0075] In the formula, For The overall anti-interference effect at each moment reflects the response strength of the electromagnetic compatibility device under electromagnetic disturbance; is the time period of the interference signal; is the number of test points; It is the time differential of the interference signal, which indicates the rate of change of the signal over time and is used to measure the change of the signal over time; For the The response coefficient of each test point is used to adjust the influence of different test points on the whole system disturbance.

[0076] The differential relationship between the electromagnetic field strength and the interference signal at each test point is integrated, and the overall anti-interference performance is obtained through time domain integration. By integrating the disturbance, not only the transmission characteristics of the electromagnetic field can be considered, but also the dynamic response of the device under time changes can be captured;

[0077] S42. In a dynamic electromagnetic environment, the response of the electromagnetic compatibility equipment is constantly changing. In order to fully reflect the dynamic changes, a global feedback mechanism is introduced. The electromagnetic field strength of each test point is affected by the electromagnetic field strength feedback of its neighboring test points, forming a closed-loop feedback system. By dynamically adjusting the electromagnetic field strength of the electromagnetic compatibility equipment under test during the test, the anti-interference evaluation of the electromagnetic compatibility equipment under test is optimized in real time; the electromagnetic field strength of each test point can be updated through the feedback mechanism, and the adjustment process is based on the real-time test results; the feedback mechanism can ensure that the response of the equipment under different interference conditions is always kept within the ideal range, making the test results more accurate. A global feedback mechanism will be introduced to dynamically adjust the electromagnetic field strength of the test point, which is expressed as:

[0078] ;

[0079] In the formula, For the The electromagnetic field strength of each test point after feedback update; For the The feedback adjustment coefficient of each test point controls the update speed of the node field strength and is obtained through equipment performance testing; It is a predetermined target immunity value, which is used to set the ideal immunity level of the electromagnetic compatibility equipment under test.

[0080] By adjusting the electromagnetic field strength at the test point, the anti-interference response of the electromagnetic compatibility device under test is dynamically optimized, thereby maintaining the anti-interference ability of the electromagnetic compatibility device under test in a constantly changing interference environment.

[0081] S5. Design an adaptive dynamic response model based on the updated electromagnetic field strength fed back from each test point to obtain the overall response of the electromagnetic compatibility device under test, wherein the adaptive dynamic response model adjusts the test parameters according to the real-time response characteristics of the electromagnetic compatibility device under test to ensure that the electromagnetic compatibility device under test meets the electromagnetic compatibility requirements;

[0082] In order to cope with the complexity of the response characteristics of the electromagnetic compatibility equipment under test and further improve the accuracy of the test, an adaptive dynamic response model is designed. The performance of the electromagnetic compatibility equipment under different electromagnetic interference conditions changes dynamically. Therefore, the test parameters must be adjusted according to the real-time response characteristics of the electromagnetic compatibility equipment under test to ensure the accuracy of the test;

[0083] Furthermore, the adaptive dynamic response model combines the electromagnetic field strength of each test point and the overall response of the electromagnetic compatibility device under test to dynamically adjust the test process of the test system, which is expressed as:

[0084] ;

[0085] In the formula, It is the overall response of the EMC device under test, reflecting the comprehensive performance of all test points under interference; For the The response adjustment coefficient of each test point controls the attenuation characteristics of the test point response and is obtained through experimental evaluation; For the The influence adjustment coefficient of each test point is used to weight the role of the node in the overall response of the electromagnetic compatibility device under test and is obtained through equipment testing.

[0086] S7. Compare the overall response of the tested EMC equipment with the target immunity value to confirm whether the tested EMC equipment meets the EMC requirements;

[0087] The overall response of the EMC device under test is obtained by comprehensive calculation of the electromagnetic field strength of each node, reflecting the immunity performance of the EMC device under electromagnetic interference conditions. By comparing the overall response of the EMC device under test with the target immunity value, it is confirmed whether the EMC device under test meets the EMC requirements. If the overall response of the EMC device under test exceeds the target immunity value or does not reach the target immunity value, repeated interference tests are required.

[0088] In order to achieve the "full performance" requirement, the test system needs to perform the test process multiple times under different electromagnetic environment conditions (such as different frequencies, power levels, time changes, etc.), and integrate multiple test results to evaluate the overall immunity of the tested electromagnetic compatibility equipment. Finally, the test system automatically generates a detailed test report to analyze the response of the equipment at each test stage and its compliance with the electromagnetic compatibility standards.

[0089] In summary, this embodiment provides a full-performance electromagnetic compatibility immunity automated testing method.

[0090] Embodiment 2:

[0091] This embodiment provides a full-performance electromagnetic compatibility immunity automatic test system, which includes a test environment simulation module, a real-time data acquisition module, an electromagnetic interference quantification module, an electromagnetic field distribution simulation module, an immunity analysis and feedback module, a response model optimization module, and a result determination and iteration module, wherein:

[0092] The test environment simulation module is used to simulate different electromagnetic environment conditions to perform interference tests on the device under test;

[0093] The real-time data acquisition module is used to monitor the response parameters of the device under test and the electromagnetic field strength of the test point in real time, and record the monitoring data;

[0094] The electromagnetic interference quantification module is used to quantify the electromagnetic interference signal based on the monitoring data using a dynamic modulation function, specifically analyzing the monitoring data to obtain the time-varying characteristics of the interference source, using a dynamic modulation function to describe the time-varying characteristics of the interference source, and quantifying the electromagnetic interference signal, which is expressed as follows:

[0095] ;

[0096] In the formula, For the electromagnetic compatibility equipment under test The interference signal strength at the moment, is the maximum electromagnetic field strength of the interference signal; is the frequency of the interference signal; is the phase of the interference signal; Controlled the decay rate of the interference signal over time; is the dynamic modulation coefficient; is the frequency of the interference signal amplitude modulation;

[0097] The electromagnetic field distribution simulation module is used to simulate the electromagnetic field strength between test points based on the quantized electromagnetic interference signal using a recursive coupling model. The recursive coupling model is constructed based on the propagation delay effect of the electromagnetic wave and the frequency modulation characteristics of the interference signal, and is expressed as follows:

[0098] ;

[0099] In the formula, For the The test points are The electromagnetic field strength at the time; For the The set of nodes adjacent to the test point; For the The test points and The coupling coefficient between the test points; is the base of natural logarithms; is the attenuation coefficient of electromagnetic field propagation; is the time-integrated variable; is the frequency modulation coefficient of the electromagnetic field modulation at the test point caused by the change of the interference signal; The interference signal is The test points and The phase difference between the test points; For the The test points are The electromagnetic field strength at the time;

[0100] The anti-interference analysis and feedback module is used to calculate the overall anti-interference effect of the electromagnetic compatibility device under test through disturbance integration based on the electromagnetic field strength between the test points, and introduce a global feedback mechanism to dynamically adjust the electromagnetic field strength of the test points to obtain the electromagnetic field strength after feedback update of each test point;

[0101] The response model optimization module is internally provided with an adaptive dynamic response model designed in combination with the electromagnetic field strength updated after feedback from each test point, so as to obtain the overall response of the electromagnetic compatibility device under test;

[0102] The result determination and iteration module is used to compare the overall response of the tested electromagnetic compatibility device with the target immunity value to confirm whether the tested electromagnetic compatibility device meets the full electromagnetic compatibility performance requirements. If not, interference testing is repeatedly performed until the full performance requirements are met.

[0103] Embodiment 3:

[0104] This embodiment provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, a full-performance electromagnetic compatibility immunity automated testing method as described in any embodiment of the present invention is implemented.

[0105] Embodiment 4:

[0106] This embodiment provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, a full-performance electromagnetic compatibility immunity automatic testing method as described in any embodiment of the present invention is implemented.

[0107] It is worth noting that the system, electronic device and computer-readable storage medium described in the present invention are all based on the same inventive concept as the method described in Example 1 of the present invention, and will not be described in detail here.

[0108] In the embodiments of the present invention, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. A and B may be singular or plural. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c may represent: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c may be single or multiple.

[0109] Those skilled in the art will appreciate that the various units and algorithm steps described in the embodiments disclosed herein can be implemented in a combination of electronic hardware, computer software, and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

[0110] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0111] In several embodiments provided by the present invention, if any function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory; hereinafter referred to as: ROM), random access memory (Random Access Memory; hereinafter referred to as: RAM), disk or optical disk and other media that can store program codes.

[0112] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A full-performance electromagnetic compatibility immunity automated testing method, characterized in that: The method comprises: Conduct interference tests on the EMC equipment under test under different electromagnetic environment conditions, monitor the response parameters of the EMC equipment under test and the electromagnetic field strength of each test point in real time, and obtain monitoring data; Based on the monitoring data, the electromagnetic interference signal is quantified using a dynamic modulation function. Specifically, the monitoring data is analyzed to obtain the time-varying characteristics of the interference source, and the dynamic modulation function is used to describe the time-varying characteristics of the interference source, and the electromagnetic interference signal is quantified, which is expressed as follows: ； In the formula, For the electromagnetic compatibility equipment under test The interference signal strength at the time, is the maximum electromagnetic field strength of the interference signal; is the frequency of the interference signal; is the phase of the interference signal; Controlled the decay rate of the interference signal over time; is the dynamic modulation coefficient; is the frequency of the interference signal amplitude modulation; Based on the quantized electromagnetic interference signal, the recursive coupling model is used to simulate the electromagnetic field strength between the test points. The recursive coupling model is constructed based on the propagation delay effect of the electromagnetic wave and the frequency modulation characteristics of the interference signal, and is expressed as follows: ； In the formula, For the The test points are The electromagnetic field strength at the time; For the The set of nodes adjacent to the test point; For the The test points and The coupling coefficient between the test points; is the base of natural logarithms; is the attenuation coefficient of electromagnetic field propagation; is the time-integrated variable; is the frequency modulation coefficient of the electromagnetic field modulation at the test point caused by the change of the interference signal; The interference signal is The test points and The phase difference between the test points; For the The test points are The electromagnetic field strength at the time; Based on the electromagnetic field strength between the test points, the overall anti-disturbance effect of the tested electromagnetic compatibility device is calculated by disturbance integration, and a global feedback mechanism is introduced to dynamically adjust the electromagnetic field strength of the test points to obtain the updated electromagnetic field strength of each test point after feedback; Design an adaptive dynamic response model based on the updated electromagnetic field strength feedback from each test point to obtain the overall response of the electromagnetic compatibility device under test; Compare the overall response of the EMC device under test with the target immunity value to confirm whether the EMC device under test meets the full EMC performance requirements. If not, perform interference tests repeatedly until the full performance requirements are met.

2. According to claim 1, a full-performance electromagnetic compatibility immunity automated testing method is characterized in that: The monitoring data includes response parameter data and electromagnetic field strength data after data preprocessing, and the data preprocessing includes noise removal, data alignment and data normalization processing.

3. The method for automatic testing of electromagnetic compatibility immunity of full performance according to claim 2 is characterized in that: Based on the electromagnetic field strength between the test points, the overall anti-disturbance effect of the tested electromagnetic compatibility device is calculated by disturbance integration and expressed as follows: ； In the formula, For The overall anti-disturbance effect at all times; is the time period of the interference signal; is the number of test points; is the time differential of the interference signal; For the The response coefficient of each test point.

4. A full-performance electromagnetic compatibility immunity automated testing method according to claim 3, characterized in that: A global feedback mechanism is introduced to dynamically adjust the electromagnetic field strength of the test point, and the electromagnetic field strength after feedback update of each test point is obtained, which is expressed as: ； In the formula, For the The electromagnetic field strength of each test point after feedback update; For the Feedback adjustment coefficient for each test point; is the predetermined target immunity value.

5. A full-performance electromagnetic compatibility immunity automated testing method according to claim 4, characterized in that: The adaptive dynamic response model combines the electromagnetic field strength at each test point and the overall response of the electromagnetic compatibility device under test, and is expressed as follows: ； In the formula, It is the overall response of the EMC device under test; For the Response adjustment coefficient for each test point; For the The impact adjustment coefficient of each test point.

6. A full-performance electromagnetic compatibility immunity automatic test system, characterized in that: The system includes a test environment simulation module, a real-time data acquisition module, an electromagnetic interference quantification module, an electromagnetic field distribution simulation module, an immunity analysis and feedback module, a response model optimization module and a result determination and iteration module, wherein: The test environment simulation module is used to simulate different electromagnetic environment conditions to perform interference tests on the device under test; The real-time data acquisition module is used to monitor the response parameters of the device under test and the electromagnetic field strength of the test point in real time, and record the monitoring data; The electromagnetic interference quantification module is used to quantify the electromagnetic interference signal based on the monitoring data using a dynamic modulation function, specifically analyzing the monitoring data to obtain the time-varying characteristics of the interference source, using a dynamic modulation function to describe the time-varying characteristics of the interference source, and quantifying the electromagnetic interference signal, which is expressed as follows: ； In the formula, For the electromagnetic compatibility equipment under test The interference signal strength at the time, is the maximum electromagnetic field strength of the interference signal; is the frequency of the interference signal; is the phase of the interference signal; Controlled the decay rate of the interference signal over time; is the dynamic modulation coefficient; is the frequency of the interference signal amplitude modulation; The electromagnetic field distribution simulation module is used to simulate the electromagnetic field strength between test points based on the quantized electromagnetic interference signal using a recursive coupling model. The recursive coupling model is constructed based on the propagation delay effect of the electromagnetic wave and the frequency modulation characteristics of the interference signal, and is expressed as follows: ； In the formula, For the The test points are The electromagnetic field strength at the time; For the The set of nodes adjacent to the test point; For the The test points and The coupling coefficient between the test points; is the base of natural logarithms; is the attenuation coefficient of electromagnetic field propagation; is the time-integrated variable; is the frequency modulation coefficient of the electromagnetic field modulation at the test point caused by the change of the interference signal; The interference signal is The test points and The phase difference between the test points; For the The test points are The electromagnetic field strength at the time; The anti-interference analysis and feedback module is used to calculate the overall anti-interference effect of the electromagnetic compatibility device under test through disturbance integration based on the electromagnetic field strength between the test points, and introduce a global feedback mechanism to dynamically adjust the electromagnetic field strength of the test points to obtain the electromagnetic field strength after feedback update of each test point; The response model optimization module is internally provided with an adaptive dynamic response model designed in combination with the electromagnetic field strength updated after feedback from each test point, so as to obtain the overall response of the electromagnetic compatibility device under test; The result determination and iteration module is used to compare the overall response of the tested electromagnetic compatibility device with the target immunity value to confirm whether the tested electromagnetic compatibility device meets the full electromagnetic compatibility performance requirements. If not, interference testing is repeatedly performed until the full performance requirements are met.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the full-performance electromagnetic compatibility immunity automated testing method as described in any one of claims 1 to 5 is implemented.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, a full-performance electromagnetic compatibility immunity automated testing method as described in any one of claims 1 to 5 is implemented.

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