System-level electromagnetic compatibility evaluation method based on reconfigurable strong interference coupling path

Abstract

The invention discloses a system-level electromagnetic compatibility evaluation method based on a reconfigurable strong interference coupling path, and relates to the technical field of electromagnetic calculation, and the method comprises the steps: building a three-dimensional structure model of a multi-device integrated system; modeling a cable bundle connected with each device in the multi-device integrated system into a multi-conductor transmission line; defining port impedance for an input port and an output port of target equipment in the multi-equipment integrated system; setting an interference source and coupling the interference source to the unshielded cable; executing full-wave electromagnetic and circuit co-simulation on the multi-device integrated system, and extracting response parameters of an input port and an output port; and calculating the electromagnetic compatibility safety margin of the multi-device integrated system according to the response parameters, and generating an evaluation report. According to the invention, the interference source and the key electrical and geometric parameters of the non-shielded cable path are set as adjustable variables, and the corresponding model is established, so that the capability of evaluating various extreme working conditions by using one standardized model is realized, and the electromagnetic compatibility of the multi-equipment integrated system can be accurately evaluated.

Description

Technical Field

[0001] This application relates to the field of electromagnetic computing technology, and in particular to a system-level electromagnetic compatibility assessment method based on reconfigurable strong interference coupling paths. Background Technology

[0002] With the rapid development of power electronics technology and the increasing integration of equipment systems, modern complex systems (such as electric vehicles, aerospace vehicles, ship platforms, and large industrial equipment) commonly contain high-voltage, high-power power supply and drive units. These units transmit high voltage and high current through unshielded cables, which themselves are powerful sources of broadband electromagnetic interference. The strong electromagnetic fields they generate can cause serious electromagnetic interference to nearby sensitive low-voltage digital devices and signal cables through both radiative and conductive coupling paths, leading to system performance degradation, malfunctions, and even hardware damage.

[0003] Traditional electromagnetic compatibility (EMC) assessments often focus on the device level or test individual devices in a standard anechoic chamber. However, this approach cannot effectively assess the complex electromagnetic interactions between high-voltage, high-current cables and sensitive devices / cables in real-world system integration environments. Currently, there is a lack of flexible, controllable, quantifiable assessment methods that can accurately reproduce the complex electromagnetic coupling relationships within a system, making it difficult to provide effective EMC prediction and design guidance in the early stages of system design. Summary of the Invention

[0004] The main objective of this application is to propose a system-level electromagnetic compatibility assessment method and related equipment based on a reconfigurable strong interference coupling path, so as to accurately assess the electromagnetic compatibility of multi-device integrated systems.

[0005] To achieve the above objectives, one aspect of this application proposes a system-level electromagnetic compatibility assessment method based on a reconfigurable strong interference coupling path, the method comprising the following steps: Establish a three-dimensional structural model of the multi-device integrated system; The cable bundles connecting the various devices in the multi-device integrated system are modeled as multi-conductor transmission lines; Define port impedances for the input and output ports of the target devices within the multi-device integrated system; Set up an interference source and couple the interference source to an unshielded cable; Perform full-wave electromagnetic and circuit co-simulation on the multi-device integrated system and extract the response parameters of the input port and the output port; The electromagnetic compatibility safety margin of the multi-device integrated system is calculated based on the response parameters, and an evaluation report is generated.

[0006] In some embodiments, establishing a three-dimensional structural model of the multi-device integrated system includes the following steps: The three-dimensional structural model is established using electromagnetic simulation software; wherein, the three-dimensional structural model includes the system chassis, equipment layout, grounding plane and cable routing path of the multi-device integrated system.

[0007] In some embodiments, the method further includes the following steps: Define the geometric parameters, material properties, and position relative to other cores and the ground plane for each core in the multi-conductor transmission line.

[0008] In some embodiments, setting the interference source includes the following steps: The pulse width modulation waveform and / or high-frequency AC or transient noise are set as the interference source; Adjust the voltage amplitude, current amplitude, fundamental frequency, rise time, fall time, and modulation method of the interference source; The process of coupling the interference source to the unshielded cable includes the following steps: The interference source is placed in the three-dimensional structural model, and the wire diameter, insulation thickness, height above ground, parallel length and spacing of the interference source with the sensitive cable are adjusted.

[0009] In some embodiments, performing full-wave electromagnetic and circuit co-simulation on the multi-device integrated system includes the following steps: The 3D full-wave electromagnetic simulator is used to calculate the radiation field distribution of the interference source to the surrounding space, and the field line coupling of the corresponding radiation field to the target device. Import the extracted MTL parameters, along with the interference source and terminal load, into a circuit simulator or use CST's circuit studio for conducted interference and crosstalk analysis.

[0010] In some embodiments, calculating the electromagnetic compatibility safety margin of the multi-device integrated system based on the response parameters includes the following steps: Calculate the electromagnetic compatibility safety margin across the entire frequency band. Margin ( f ): ; in, V immunity(f) The preset immunity threshold, V noise(f) The interference voltage spectrum is the response parameter.

[0011] In some embodiments, generating an evaluation report includes the following steps: Based on the electromagnetic compatibility safety margin, determine the input ports and / or output ports whose frequency point margin does not meet the standard; Improvement suggestions are generated based on the input ports and / or output ports where the frequency margin is not met.

[0012] To achieve the above objectives, another aspect of this application proposes a system-level electromagnetic compatibility assessment device based on a reconfigurable strong interference coupling path, the device comprising: The system modeling unit is used to create a three-dimensional structural model of a multi-device integrated system. The cable modeling unit is used to model the cable bundles connecting the various devices in the multi-device integrated system as multi-conductor transmission lines. A port setting unit is used to define port impedance for the input and output ports of the target devices within the multi-device integration system. An interference source setting unit is used to set an interference source and couple the interference source to an unshielded cable; The simulation test unit is used to perform full-wave electromagnetic and circuit co-simulation on the multi-device integrated system and extract the response parameters of the input port and the output port; An evaluation unit is used to calculate the electromagnetic compatibility safety margin of the multi-device integrated system based on the response parameters and generate an evaluation report.

[0013] To achieve the above objectives, another aspect of this application provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the above-described method.

[0014] To achieve the above objectives, another aspect of the embodiments of this application proposes a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method.

[0015] To achieve the above objectives, another aspect of this application provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0016] The embodiments of this application include at least the following beneficial effects: This application provides a system-level electromagnetic compatibility (EMC) assessment method and related equipment based on reconfigurable strong interference coupling paths. The proposed solution involves: establishing a three-dimensional structural model of a multi-device integrated system; modeling the cable bundles connecting the devices within the system as multi-conductor transmission lines; defining port impedances for the input and output ports of the target devices within the system; setting up interference sources and coupling them to unshielded cables; performing full-wave electromagnetic and circuit co-simulation on the multi-device integrated system and extracting the response parameters of the input and output ports; calculating the EMC safety margin of the multi-device integrated system based on the response parameters; and generating an assessment report. This application sets all key electrical and geometric parameters of the interference source and its unshielded cable path as adjustable variables, establishing a corresponding model, and achieving the ability to assess multiple extreme operating conditions using a standardized model, thus accurately evaluating the EMC of multi-device integrated systems. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A flowchart illustrating the system-level electromagnetic compatibility assessment method based on a reconfigurable strong interference coupling path provided in this application embodiment; Figure 2 Example flowchart of a system-level electromagnetic compatibility assessment method based on a reconfigurable strong interference coupling path provided in this application embodiment; Figure 3 An optional three-dimensional structural model diagram provided for an embodiment of this application; Figure 4 This is a model diagram of a high-voltage, high-current cable provided in an embodiment of this application; Figure 5 A schematic diagram of the system-level electromagnetic compatibility assessment device based on a reconfigurable strong interference coupling path provided in this application embodiment; Figure 6 This is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit it. In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of this application; they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of this application as detailed in the appended claims.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0021] Before providing a detailed description of the embodiments of this application, some related technologies involved in the embodiments of this application will be described first, as follows: Existing technology 1: System-level experimental method. The system-level experimental method involves building a real system prototype, running high-voltage and high-current components, and using probes and receivers to directly measure the interference noise at the ports of sensitive devices.

[0022] Technical disadvantages: extremely high cost and long cycle time; high risk (high voltage safety); interference source parameters (such as voltage, current, frequency) are difficult to adjust flexibly; once a problem is discovered, modifying the design is extremely costly.

[0023] Existing technology 2: Simplified simulation method. Conducted interference analysis is performed using SPICE or simplified circuit models.

[0024] Technical drawbacks: It cannot accurately simulate high-frequency radiation effects, electromagnetic coupling of complex cable bundles, and the influence of three-dimensional spatial structures, resulting in an incomplete analysis.

[0025] Therefore, there is an urgent need for a solution that can accurately predict and evaluate the electromagnetic compatibility (EMC) of a system under real high-voltage, high-current environments during the design phase. The purpose of this application is to overcome the shortcomings of existing technologies and provide a system-level EMC evaluation scheme based on simulation, with adjustable parameters, and covering both radiated and conducted coupling. Specific objectives include: 1) Construct a standardized high-voltage, high-current interference environment model with quantifiable and flexibly adjustable parameters.

[0026] 2) Establish a complete system-level electromagnetic simulation process that can accurately simulate interference sources, coupling paths (cable bundles), and sensitive devices.

[0027] 3) To achieve a quantitative assessment of the electromagnetic stress of key equipment and cables in the system under strong interference environment, and to form clear assessment conclusions and design improvement suggestions.

[0028] 4) The evaluation will be upgraded from a binary judgment of "pass / fail" to a quantitative analysis of the electromagnetic compatibility margin of the system.

[0029] This application provides a system-level electromagnetic compatibility (EMC) assessment method and related equipment based on reconfigurable strong interference coupling paths, relating to the field of electromagnetic computing technology. The system-level EMC assessment method and related equipment based on reconfigurable strong interference coupling paths provided in this application can be applied to terminals, servers, or software running on terminals or servers. In some embodiments, the terminal can be a smartphone, tablet, laptop, desktop computer, smart speaker, smartwatch, or vehicle terminal, but is not limited to these. The server can be configured as an independent physical server, a server cluster composed of multiple physical servers, or a distributed system. It can also be configured as a cloud server providing basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms. The server can also be a node server in a blockchain network. The software can be an application implementing the system-level EMC assessment method based on reconfigurable strong interference coupling paths, but is not limited to the above forms.

[0030] This application can be used in a wide variety of general-purpose or special-purpose computer system environments or configurations. Examples include: personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics devices, network PCs, minicomputers, mainframe computers, and distributed computing environments including any of the above systems or devices. This application can be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc., that perform specific tasks or implement specific abstract data types. This application can also be practiced in distributed computing environments where tasks are performed by remote processing devices connected via a communication network. In distributed computing environments, program modules can reside in local and remote computer storage media, including storage devices.

[0031] Reference Figure 1 This application provides a system-level electromagnetic compatibility assessment method based on a reconfigurable strong interference coupling path. This method may include, but is not limited to, steps S100 to S150, as follows: S100: Establish a three-dimensional structural model of the multi-device integrated system; S110: Model the cable bundles connecting the devices in the multi-device integrated system as multi-conductor transmission lines; S120: Define port impedances for the input and output ports of the target devices within the multi-device integrated system; S130: Set up an interference source and couple the interference source to an unshielded cable; S140: Perform full-wave electromagnetic and circuit co-simulation on the multi-device integrated system and extract the response parameters of the input port and the output port; S150: Calculate the electromagnetic compatibility safety margin of the multi-device integrated system based on the response parameters, and generate an evaluation report.

[0032] Optionally, establishing the three-dimensional structural model of the multi-device integrated system includes the following steps: The three-dimensional structural model is established using electromagnetic simulation software; wherein, the three-dimensional structural model includes the system chassis, equipment layout, grounding plane and cable routing path of the multi-device integrated system.

[0033] Optionally, the method further includes the following steps: Define the geometric parameters, material properties, and position relative to other cores and the ground plane for each core in the multi-conductor transmission line.

[0034] Optionally, setting the interference source includes the following steps: The pulse width modulation waveform and / or high-frequency AC or transient noise are set as the interference source; Adjust the voltage amplitude, current amplitude, fundamental frequency, rise time, fall time, and modulation method of the interference source; The process of coupling the interference source to the unshielded cable includes the following steps: The interference source is placed in the three-dimensional structural model, and the wire diameter, insulation thickness, height above ground, parallel length and spacing of the interference source with the sensitive cable are adjusted.

[0035] Optionally, performing full-wave electromagnetic and circuit co-simulation on the multi-device integrated system includes the following steps: The 3D full-wave electromagnetic simulator is used to calculate the radiation field distribution of the interference source to the surrounding space, and the field line coupling of the corresponding radiation field to the target device. Import the extracted MTL parameters, along with the interference source and terminal load, into a circuit simulator or use CST's circuit studio for conducted interference and crosstalk analysis.

[0036] Optionally, calculating the electromagnetic compatibility safety margin of the multi-device integrated system based on the response parameters includes the following steps: Calculate the electromagnetic compatibility safety margin across the entire frequency band. Margin ( f ): ; in, V immunity(f) The preset immunity threshold, V noise(f) The interference voltage spectrum is the response parameter.

[0037] Optionally, generating the evaluation report includes the following steps: Based on the electromagnetic compatibility safety margin, determine the input ports and / or output ports whose frequency point margin does not meet the standard; Improvement suggestions are generated based on the input ports and / or output ports where the frequency margin is not met.

[0038] The following sections will provide a detailed description and explanation of some optional embodiments of this application, using specific application examples.

[0039] The overall technical solution flow of this embodiment is as follows: Figure 2 As shown, it includes four core stages: system modeling, interference environment construction, coupled simulation, and quantitative evaluation.

[0040] The specific implementation steps are as follows: System modeling: (1) Establish a three-dimensional structural model of the system.

[0041] Using the electromagnetic simulation software CST, an accurate 3D model was created, including the system chassis, equipment layout, grounding plane, and cable routing paths.

[0042] (2) Establish a multi-conductor transmission line model.

[0043] ① Model the cable bundles connecting various devices within the system as multi-conductor transmission lines; ② Define the geometric parameters (radius, insulation thickness), material properties (dielectric constant), and position of each core wire relative to other core wires and the ground plane.

[0044] (3) Define sensitive device ports.

[0045] Set up a termination network, such as ZL, at the input / output ports of sensitive devices to represent the actual input impedance of the devices.

[0046] For example, Figure 3 This is an optional three-dimensional structural model.

[0047] b. Construction of a tunable strong interference environment: (1) Set up a high-voltage, high-current interference source.

[0048] ① The interference source can be a pulse width modulation waveform, high-frequency AC, or transient noise.

[0049] ② Key parameters are adjustable and quantifiable: including voltage amplitude. V Current amplitude I Fundamental frequency f Rise / fall time and modulation method.

[0050] (2) Construct interference coupling path.

[0051] ① Place the high-voltage, high-current unshielded cable in the system model, and its parameters (such as wire diameter, insulation thickness, height above ground, parallel length and spacing with sensitive cables) are all adjustable variables; ②The unshielded cable serves as both a carrier for the interference source and an antenna for radiating into space.

[0052] For example, Figure 4 This is a model of a high-voltage, high-current cable.

[0053] c-field-road cooperative hybrid simulation: (1) Perform full-wave electromagnetic and circuit co-simulation.

[0054] ① Use a 3D full-wave electromagnetic simulator to calculate the radiation field distribution of high-voltage cables to the surrounding space, and the field-line coupling of this radiation field to sensitive cables and equipment; ②At the same time, import the extracted MTL parameters along with the interference source and terminal load into a circuit simulator (or use CST's circuit studio) to perform conducted interference and crosstalk analysis. ③ This hybrid simulation can simultaneously capture four electromagnetic compatibility phenomena: radiated emission, radiated immunity, conducted emission, and conducted immunity.

[0055] (2) Extract the interference response of sensitive ports.

[0056] After simulation, the interference voltage spectrum on all preset sensitive device ports is extracted. V noise(f) or interference current spectrum I noise(f) .

[0057] d. Quantitative assessment and margin analysis: (1) Calculate the electromagnetic compatibility safety margin of the system.

[0058] ① Extract the interference response V noise(f)Known immunity thresholds for sensitive devices V immunity(f) Compare; ② Calculate the safety margin across the entire frequency band. Margin ( f The formula is as follows: ; ③If Margin ( f If the design margin is met, it is considered qualified; otherwise, it is considered to be at risk.

[0059] (2) Generate an evaluation report and optimization suggestions.

[0060] ① Develop an assessment report that clearly identifies which device ports have insufficient margin at which frequency points; ②Based on parametric research, specific improvement suggestions are provided.

[0061] In summary, this embodiment includes the following key technical solutions: (1) By constructing a high-voltage, high-current, unshielded cable interference environment with adjustable parameters, and combining it with the system multi-conductor transmission line model, the electromagnetic compatibility of sensitive equipment in the system is quantitatively evaluated through field-circuit co-simulation.

[0062] (2) Parametric interference environment: The electrical parameters such as voltage, current, frequency, and rise time of the high-voltage and high-current interference source, as well as the geometric layout parameters of the unshielded cable, are all quantifiable and adjustable variables in the specific design.

[0063] (3) System-level MTL and 3D structure co-modeling: The cable bundles in the system are established as multi-conductor transmission line models and combined with the three-dimensional structural model of the system for the specific modeling method of calculating coupling.

[0064] (4) Field-circuit co-simulation process: a hybrid simulation step that uses full-wave electromagnetic simulation to calculate radiation coupling and circuit simulation to calculate conduction coupling, and combines the two.

[0065] (5) Quantitative evaluation index: Based on the interference response obtained from simulation and the immunity threshold of the equipment, calculate the frequency domain safety margin Margin(f), and generate system-level electromagnetic compatibility evaluation conclusions and design optimization suggestions accordingly.

[0066] The beneficial effects of the technical solution in this embodiment: (1) Parametric and reconfigurable interference environment model: All key electrical and geometric parameters of high voltage and high current interference sources and their unshielded cable paths are set as adjustable variables, realizing the ability to evaluate a variety of extreme working conditions with a standardized model.

[0067] (2) System-level multi-conductor transmission line modeling: The complex cable bundles in the system are accurately modeled as MTL, which is the basis for analyzing complex phenomena such as crosstalk and common-mode / differential-mode conversion, realizing a leap from "equipment" evaluation to "system network" evaluation.

[0068] (3) Field-circuit collaborative hybrid simulation mechanism: seamlessly integrates 3D full-wave electromagnetic simulation with circuit simulation, solving the radiation and conduction coupling problem in one workflow, ensuring the integrity and accuracy of the evaluation.

[0069] (4) Quantitative evaluation system based on safety margin: The concept of frequency domain safety margin is introduced and quantitative calculation is performed, so that the evaluation results are shifted from qualitative to quantitative, providing a clear and direct basis for design optimization.

[0070] Reference Figure 5 This application also provides a system-level electromagnetic compatibility assessment device based on a reconfigurable strong interference coupling path, which can implement the above-mentioned system-level electromagnetic compatibility assessment method based on a reconfigurable strong interference coupling path. The device includes: The system modeling unit is used to create a three-dimensional structural model of a multi-device integrated system. The cable modeling unit is used to model the cable bundles connecting the various devices in the multi-device integrated system as multi-conductor transmission lines. A port setting unit is used to define port impedance for the input and output ports of the target devices within the multi-device integration system. An interference source setting unit is used to set an interference source and couple the interference source to an unshielded cable; The simulation test unit is used to perform full-wave electromagnetic and circuit co-simulation on the multi-device integrated system and extract the response parameters of the input port and the output port; An evaluation unit is used to calculate the electromagnetic compatibility safety margin of the multi-device integrated system based on the response parameters and generate an evaluation report.

[0071] It is understood that the content of the above method embodiments is applicable to the present device embodiments. The specific functions implemented by the present device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0072] This application also provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the method of this application. This electronic device can be any smart terminal, including tablet computers, in-vehicle computers, etc.

[0073] It is understood that the content of the above method embodiments is applicable to the device embodiments. The specific functions implemented by the device embodiments are the same as those of the methods of this application, and the beneficial effects achieved are also the same as those achieved by the methods of this application.

[0074] Figure 6 The hardware structure of an electronic device according to another embodiment is illustrated. The electronic device includes: The processor 101 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this application. The memory 102 can be implemented as a read-only memory (ROM), static storage device, dynamic storage device, or random access memory (RAM). The memory 102 can store the operating system and other applications. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 102 and is called and executed by the processor 101. Input / output interface 103 is used to implement information input and output; The communication interface 104 is used to enable communication and interaction between this device and other devices. Communication can be achieved through wired means (such as USB, network cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.). Bus 105 transmits information between various components of the device (e.g., processor 101, memory 102, input / output interface 103, and communication interface 104); The processor 101, memory 102, input / output interface 103 and communication interface 104 are connected to each other within the device via bus 105.

[0075] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method of this application.

[0076] It is understood that the content of the above method embodiments is applicable to this storage medium embodiment. The specific functions implemented in this storage medium embodiment are the same as those in the above method embodiments, and the beneficial effects achieved are also the same as those achieved in the above method embodiments.

[0077] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0078] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory may optionally include memory remotely located relative to the processor, and these remote memories can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0079] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0080] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0081] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0082] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0083] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0084] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0085] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0086] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0087] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0088] If the integrated unit is implemented as 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 this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes multiple instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing programs, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0089] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. A method for system-level electromagnetic compatibility evaluation based on reconfigurable strong interference coupling paths, characterized in that, The method includes the following steps: Establish a three-dimensional structural model of the multi-device integrated system; The cable bundles connecting the various devices in the multi-device integrated system are modeled as multi-conductor transmission lines; Define port impedances for the input and output ports of the target devices within the multi-device integrated system; Set up an interference source and couple the interference source to an unshielded cable; Perform full-wave electromagnetic and circuit co-simulation on the multi-device integrated system and extract the response parameters of the input port and the output port; The electromagnetic compatibility safety margin of the multi-device integrated system is calculated based on the response parameters, and an evaluation report is generated.

2. The system-level electromagnetic compatibility assessment method based on a reconfigurable strong interference coupling path according to claim 1, characterized in that, The establishment of the three-dimensional structural model of the multi-device integrated system includes the following steps: The three-dimensional structural model is established using electromagnetic simulation software; wherein, the three-dimensional structural model includes the system chassis, equipment layout, grounding plane and cable routing path of the multi-device integrated system.

3. The system-level electromagnetic compatibility assessment method based on a reconfigurable strong interference coupling path according to claim 1, characterized in that, The method further includes the following steps: Define the geometric parameters, material properties, and position relative to other cores and the ground plane for each core in the multi-conductor transmission line.

4. The system-level electromagnetic compatibility assessment method based on a reconfigurable strong interference coupling path according to claim 1, characterized in that, Setting up the interference source includes the following steps: The pulse width modulation waveform and / or high-frequency AC or transient noise are set as the interference source; Adjust the voltage amplitude, current amplitude, fundamental frequency, rise time, fall time, and modulation method of the interference source; The process of coupling the interference source to the unshielded cable includes the following steps: The interference source is placed in the three-dimensional structural model, and the wire diameter, insulation thickness, height above ground, parallel length and spacing of the interference source with the sensitive cable are adjusted.

5. The system-level electromagnetic compatibility assessment method based on a reconfigurable strong interference coupling path according to claim 1, characterized in that, The process of performing full-wave electromagnetic and circuit co-simulation on the multi-device integrated system includes the following steps: The 3D full-wave electromagnetic simulator is used to calculate the radiation field distribution of the interference source to the surrounding space, and the field line coupling of the corresponding radiation field to the target device. Import the extracted MTL parameters, along with the interference source and terminal load, into a circuit simulator or use CST's circuit studio for conducted interference and crosstalk analysis.

6. The system-level electromagnetic compatibility assessment method based on a reconfigurable strong interference coupling path according to claim 1, characterized in that, The calculation of the electromagnetic compatibility safety margin of the multi-device integrated system based on the response parameters includes the following steps: Calculate the electromagnetic compatibility safety margin across the entire frequency band. Margin ( f ): ； in, V immunity(f) The preset immunity threshold, V noise(f) The interference voltage spectrum is the response parameter.

7. The system-level electromagnetic compatibility assessment method based on a reconfigurable strong interference coupling path according to any one of claims 1 to 6, characterized in that, The generation of the evaluation report includes the following steps: Based on the electromagnetic compatibility safety margin, determine the input ports and / or output ports whose frequency point margin does not meet the standard; Improvement suggestions are generated based on the input ports and / or output ports where the frequency margin is not met.

8. A system-level electromagnetic compatibility assessment device based on a reconfigurable strong interference coupling path, characterized in that, The device includes: The system modeling unit is used to create a three-dimensional structural model of a multi-device integrated system. The cable modeling unit is used to model the cable bundles connecting the various devices in the multi-device integrated system as multi-conductor transmission lines. A port setting unit is used to define port impedance for the input and output ports of the target devices within the multi-device integration system. An interference source setting unit is used to set an interference source and couple the interference source to an unshielded cable; The simulation test unit is used to perform full-wave electromagnetic and circuit co-simulation on the multi-device integrated system and extract the response parameters of the input port and the output port; An evaluation unit is used to calculate the electromagnetic compatibility safety margin of the multi-device integrated system based on the response parameters and generate an evaluation report.

9. An electronic device, characterized in that, The electronic device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the method as described in any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the method as described in any one of claims 1 to 7.

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