Electromagnetic compatibility evaluation method, system and device and storage medium

Abstract

The invention discloses an electromagnetic compatibility evaluation method, system and device and a storage medium, and the method comprises the steps: obtaining an antenna cabin bottom plate model, and carrying out the calculation based on the antenna cabin bottom plate model and a preset simplification condition, and obtaining a simplified antenna cabin bottom plate model; acquiring modeling data based on the simplified antenna cabin bottom plate model; the simplified antenna cabin bottom plate model comprises a plurality of antennas; building a plurality of radio frequency system models of the antenna based on the simplified antenna cabin floor plate model and the modeling data; and performing simulation based on the radio frequency system models of the plurality of antennas, and evaluating the overall electromagnetic compatibility of the radio frequency system models of the plurality of antennas based on the simulation result. According to the embodiment of the invention, the efficiency of analyzing the electromagnetic compatibility of the mutual interference condition when the cabin radio frequency antenna system works can be improved, and the method can be widely applied to the field of electromagnetic technology.

Description

Technical Field

[0001] The present invention relates to the field of electromagnetic technology, and in particular to an electromagnetic compatibility evaluation method, system, device and storage medium. Background Art

[0002] Electromagnetic compatibility analysis predicts and evaluates the performance of equipment in a specific electromagnetic environment, promptly discovers and solves potential electromagnetic interference problems, and improves the stability and reliability of equipment. It is a key step to ensure that electrical and electronic equipment do not interfere with each other and work together in a complex electromagnetic environment. In high-tech fields such as aircraft, automobiles, and medical treatment, electromagnetic compatibility analysis is particularly important because it is directly related to the safety and stability of the system.

[0003] Electromagnetic compatibility analysis is particularly important for aircraft platform equipment systems. The internal environment of aircraft platform equipment systems is complex and includes subsystems with various functions, so the requirements for internal data transmission are higher. As the data transmission rate in aircraft equipment becomes higher and higher, the electromagnetic environment of aircraft platforms becomes more and more complex, and electromagnetic compatibility issues become prominent. Secondly, the electronic equipment inside the aircraft is dense, the space in the antenna cabin is tight, the antennas are installed relatively concentrated and compactly, the electromagnetic spectrum covers a wide range, some transmitters have high transmission power, and the receivers have high sensitivity. The electromagnetic interference sources are diverse, there are many interference propagation paths, and there are many sensitive devices. Mutual interference between RF antenna systems is prone to occur in the communication antenna cabin. However, the existing technology has the problem of low efficiency in electromagnetic compatibility analysis for the situation where the cabin RF antenna systems interfere with each other when working. Summary of the invention

[0004] In view of this, in order to solve one of the above problems, an embodiment of the present invention aims to provide an electromagnetic compatibility evaluation method, system, device and storage medium, which can improve the efficiency of electromagnetic compatibility analysis of mutual interference when the cabin radio frequency antenna system is working.

[0005] In a first aspect, an embodiment of the present invention provides an electromagnetic compatibility assessment method, comprising the following steps:

[0006] Acquire an antenna cabin bottom plate model, and calculate a simplified antenna cabin bottom plate model based on the antenna cabin bottom plate model and preset simplified conditions;

[0007] Based on the simplified antenna cabin bottom plate model, acquiring modeling data; the simplified antenna cabin bottom plate model includes a plurality of antennas;

[0008] Building a plurality of radio frequency system models of the antennas based on the simplified antenna cabin bottom plate model and the modeling data;

[0009] Simulation is performed based on the radio frequency system models of the plurality of antennas, and based on the simulation results, the overall electromagnetic compatibility performance of the radio frequency system models of the plurality of antennas is evaluated.

[0010] The present invention provides an electromagnetic compatibility evaluation method, which simplifies the antenna cabin floor model, imports data into the simplified antenna cabin floor model, uses the imported data to build and simulate several corresponding antenna radio frequency system models, and processes and analyzes the simulation results of several corresponding antenna radio frequency system models and models to evaluate the electromagnetic compatibility performance of the built antenna radio frequency system model as a whole. The electromagnetic compatibility evaluation method is simple and uses the electromagnetic simulation method to solve, which can quickly analyze the mutual interference of each antenna radio frequency system when working, and improve the efficiency of electromagnetic compatibility analysis of the mutual interference of the cabin radio frequency antenna system when working.

[0011] Optionally, the calculating and obtaining a simplified antenna bay bottom plate model based on the antenna bay bottom plate model and preset simplified conditions includes:

[0012] Based on preset simplification conditions, the antenna bay floor model is subjected to internal irrelevant parts removal and external structure flattening processing, and a simplified antenna bay floor model is obtained by calculation.

[0013] Optionally, based on preset simplification conditions, removing irrelevant internal parts and smoothing the external structure of the antenna cabin floor model to calculate a simplified antenna cabin floor model includes:

[0014] Based on the antenna cabin bottom plate model, obtaining internal part structure data and surface structure data of the antenna cabin bottom plate model;

[0015] Based on the internal parts construction data, the parts inside the antenna bay floor model that have no effect on the electromagnetic compatibility analysis are removed; and based on the surface construction data, the external structure of the antenna bay floor model is smoothed to calculate and obtain the simplified antenna bay floor model.

[0016] Optionally, building a plurality of radio frequency system models of the antennas based on the modeling data includes:

[0017] Deleting irrelevant data based on the modeling data to obtain radio frequency interference simulation data;

[0018] Based on the RF interference simulation data, several antenna RF system models are built.

[0019] Optionally, building a plurality of antenna RF system models based on the RF interference simulation data includes:

[0020] Based on the radio frequency interference simulation data, obtaining port information, S parameter results and position information of several antennas in the simplified antenna cabin bottom plate model; the simplified antenna cabin bottom plate model includes several connection ports;

[0021] Based on the position information of the plurality of antennas, building a radio frequency system circuit model corresponding to the plurality of antennas;

[0022] Determine the connection status of the plurality of connection ports of the simplified antenna cabin bottom plate model and the plurality of RF system circuit models corresponding to the antennas based on the RF system circuit models corresponding to the plurality of antennas, the port information of the simplified antenna cabin bottom plate model and the S parameter results;

[0023] Setting performance parameters of the RF system circuit models corresponding to the antennas based on the RF system circuit models corresponding to the antennas, the port information of the simplified antenna cabin bottom plate model, and the S parameter results;

[0024] Based on the performance parameters of the RF system circuit models corresponding to the antennas and the connection status between the connection ports of the simplified antenna cabin bottom plate model and the RF system circuit models corresponding to the antennas, several antenna RF system models are built.

[0025] Optionally, the simulating based on the radio frequency system model of the plurality of antennas, and evaluating the electromagnetic compatibility performance of the radio frequency systems of the plurality of antennas based on the simulation results, includes:

[0026] Perform simulation based on the radio frequency system models of the plurality of antennas, and calculate the mutual interference between any two radio frequency systems in the radio frequency system models of the plurality of antennas based on the simulation results;

[0027] Based on the mutual interference between any two of the radio frequency systems in the radio frequency system models of the plurality of antennas, the electromagnetic compatibility performance of the radio frequency systems of the plurality of antennas is evaluated.

[0028] Optionally, the evaluating the overall electromagnetic compatibility performance of the radio frequency system models of the plurality of antennas based on the mutual interference between any two of the radio frequency systems in the radio frequency system models of the plurality of antennas includes:

[0029] Based on the mutual interference between any two of the radio frequency systems in the radio frequency system models of the plurality of antennas, an interference matrix result between any two of the radio frequency systems is calculated;

[0030] Based on the interference matrix results between any two of the radio frequency systems, construct an interference matrix table of the entire radio frequency system of the plurality of antennas;

[0031] Based on the interference matrix table, the overall electromagnetic compatibility performance of the radio frequency system model of the plurality of antennas is evaluated.

[0032] In a second aspect, the present invention further provides an electromagnetic compatibility evaluation system, comprising:

[0033] The first module is used to obtain antenna cabin bottom plate model data, and calculate a simplified antenna cabin bottom plate model based on the antenna cabin bottom plate model data and preset simplified conditions;

[0034] The second module is used to obtain modeling data based on the simplified antenna cabin bottom plate model; the simplified antenna cabin bottom plate model includes a plurality of antennas;

[0035] A third module is used to build a radio frequency system model of several antennas based on the modeling data;

[0036] The fourth module performs simulation based on the radio frequency system models of the plurality of antennas, and evaluates the overall electromagnetic compatibility performance of the radio frequency system models of the plurality of antennas based on the simulation results.

[0037] In a third aspect, the present invention further provides an electromagnetic compatibility evaluation device, comprising:

[0038] at least one processor;

[0039] at least one memory for storing at least one program;

[0040] When the at least one program is executed by the at least one processor, the at least one processor implements the evaluation method as described above.

[0041] In a fourth aspect, the present invention further provides a computer-readable storage medium storing a program executable by a processor, wherein the program executable by the processor is used to execute the evaluation method as described above when executed by the processor.

[0042] In summary, the implementation of the embodiments of the present invention may include the following beneficial effects:

[0043] The present invention provides an electromagnetic compatibility evaluation method, system, device and storage medium, which simplifies the antenna cabin floor model, imports data into the simplified antenna cabin floor model, uses the imported data to build and simulate several corresponding antenna radio frequency system models, processes and analyzes the simulation results of several corresponding antenna radio frequency system models and models, obtains the mutual interference between models and constructs an interference matrix table, which is used to evaluate the electromagnetic compatibility performance of the constructed antenna radio frequency system model as a whole. The electromagnetic compatibility evaluation method is simple, and is solved by electromagnetic simulation methods. It can quickly analyze the mutual interference between each antenna radio frequency system when working, and construct an interference matrix table based on the mutual interference between models, which can intuitively evaluate the electromagnetic compatibility performance of several antenna radio frequency systems as a whole. In summary, the electromagnetic compatibility evaluation method, system, device and storage medium provided by the present invention can improve the efficiency of electromagnetic compatibility analysis of the mutual interference between cabin radio frequency antenna systems when working. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the steps of an electromagnetic compatibility evaluation method provided by an embodiment of the present invention;

[0045] Figure 2 It is a schematic diagram of importing a simplified antenna cabin bottom plate model into simulation software provided by an embodiment of the present invention;

[0046] Figure 3 It is a schematic diagram of constructing a circuit model of a radio frequency system corresponding to an antenna provided by an embodiment of the present invention;

[0047] Figure 4 This is an example of importing S parameter results of a simplified antenna cabin bottom plate model into simulation software provided by an embodiment of the present invention;

[0048] Figure 5 This is an example of setting performance parameters of a radio frequency system circuit model corresponding to an antenna provided by an embodiment of the present invention;

[0049] Figure 6 This is an example of building a radio frequency system of several antennas provided by an embodiment of the present invention;

[0050] Figure 7 This is an example of an overall radio frequency system model for building several antennas provided by an embodiment of the present invention;

[0051] Figure 8 An example of constructing an interference matrix table for mutual interference between any two radio frequency systems in a radio frequency system model based on multiple antennas provided by an embodiment of the present invention;

[0052] Fig. 9It is a schematic diagram of the structural framework of an electromagnetic compatibility evaluation system provided by an embodiment of the present invention;

[0053] Fig.10 It is a schematic diagram of the structural framework of an electromagnetic compatibility evaluation device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0054] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The step numbers in the following embodiments are only provided for the convenience of explanation and description, and the order between the steps is not limited in any way. The execution order of each step in the embodiment can be adaptively adjusted according to the understanding of those skilled in the art.

[0055] The relevant software involved in this application is introduced as follows:

[0056] CREO software: A powerful 3D modeling software widely used in product design, engineering analysis and manufacturing. Creo integrates parametric technology, direct modeling technology and 3D visualization technology, providing a comprehensive design solution that can help engineers better design, analyze and optimize products, and improve product quality and production efficiency.

[0057] ANSYS EMIT software: A simulation software suitable for predicting electromagnetic interference (EMI) in complex radio frequency (RF) environments. It provides an overall framework from RF system performance data management, co-location and coexistence EMI effect simulation to EMI problem improvement, and can realize complete model simulation design of multiple RF system platforms throughout the entire life cycle.

[0058] Several terms involved in this application are explained as follows:

[0059] Electromagnetic compatibility analysis: A process to evaluate whether electronic and electrical equipment and systems can work properly in their intended electromagnetic environment without causing unacceptable electromagnetic interference to other equipment in the environment. It covers multiple aspects such as emission, reception, coupling and sensitivity to ensure harmonious coexistence and efficient operation between devices.

[0060] The three elements of electromagnetic compatibility include interference source, coupling path and sensitive source (or sensitive equipment). Interference source is the source of electromagnetic interference, coupling path is the path of electromagnetic interference from interference source to sensitive source, and sensitive source is the equipment or system that is easily affected by electromagnetic interference and causes performance degradation or failure.

[0061] Electromagnetic simulation: A simulation and analysis method based on computer technology. It simulates and predicts electromagnetic phenomena such as electromagnetic fields, electromagnetic wave propagation, scattering, coupling, and electromagnetic compatibility by establishing accurate mathematical models and algorithms, helping engineers better understand and control electromagnetic behavior when designing and optimizing electronic and electrical equipment and systems, thereby improving product performance and reliability.

[0062] Mutual coupling: refers to the direct or indirect interaction and connection between two or more components (such as antennas, circuits or electromagnetic systems). This interaction can be achieved through physical contact or coupling of electromagnetic fields, resulting in the transfer, interference or influence of energy or signals.

[0063] S parameters: Scattering parameters are key parameters used to describe the transmission and reflection characteristics between linear network ports under high-frequency signal excitation. They can quantify the power transmission efficiency, reflection coefficient and signal integrity between ports, which is essential for predicting and solving electromagnetic interference, optimizing circuit design and ensuring electromagnetic compatibility between devices.

[0064] EMI margin: refers to the margin left by the equipment in terms of electromagnetic compatibility, that is, the ability of the equipment to still work normally when subjected to electromagnetic interference. It depends on the electromagnetic compatibility design and manufacturing level of the equipment, as well as factors such as the intensity and frequency of electromagnetic interference. It is an important indicator for evaluating the electromagnetic compatibility performance of equipment.

[0065] EMIT simulation calculation: a professional electromagnetic compatibility and RF anti-interference simulation method. It uses advanced simulation software, such as ANSYS EMIT, to model and analyze complex RF systems. It can calculate the interference of up to millions of channels, fully consider all potential interference factors, and automatically diagnose interference paths and generation mechanisms. EMIT simulation calculation provides engineers with comprehensive and intuitive simulation results, helping them quickly solve system-level anti-interference problems, optimize equipment design, and ensure electromagnetic compatibility.

[0066] EMI interference matrix: is a tool used to describe and analyze the relationship between electromagnetic interference (EMI) sources and affected devices. It forms a matrix by arranging and combining different EMI sources (such as motors, switching power supplies, etc.) and sensitive devices (such as communication equipment, medical equipment, etc.) to evaluate the degree of interference and impact range that each EMI source may have on sensitive devices, thereby helping engineers identify and solve potential electromagnetic compatibility problems.

[0067] Interference matrix: A tool used to characterize the mutual interference between users. It uses a matrix to show whether different users (or devices) will cause interference when accessing the same frequency band at the same time. In the interference matrix, each element represents the interference situation of a pair of users (or devices) on a specific frequency band. Usually 0 and 1 are used to represent the state of no interference and interference, so as to help analysts identify and solve potential electromagnetic compatibility problems.

[0068] like Figure 1 As shown, an embodiment of the present invention provides an electromagnetic compatibility evaluation method, which includes the following steps.

[0069] S100: Obtain an antenna bay bottom plate model, and calculate a simplified antenna bay bottom plate model based on the antenna bay bottom plate model and preset simplified conditions.

[0070] First, the antenna cabin floor model is obtained, including the antenna cabin floor itself and the relevant data of its model. Based on the relevant data of its model, whether the internal parts or external structures of the model are related to the electromagnetic compatibility assessment is considered, and the antenna cabin floor model is simplified using 3D modeling software (such as CREO software). The simplification operation can include the removal of irrelevant internal parts and the flattening of external structures.

[0071] In some embodiments, the process of calculating and obtaining the simplified antenna cabin floor model based on the antenna cabin floor model and the preset simplified conditions in step S100 can be implemented by the following steps:

[0072] S110: Based on the antenna cabin bottom plate model, internal part structure data and surface structure data of the antenna cabin bottom plate model are obtained;

[0073] S120: Based on the internal parts structure data, the parts inside the antenna cabin bottom plate model that have no effect on the electromagnetic compatibility analysis are removed; and based on the surface structure data, the external structure of the antenna cabin bottom plate model is flattened to calculate and obtain a simplified antenna cabin bottom plate model.

[0074] Optionally, considering that the parts inside the antenna cabin bottom plate model shell have no effect on the electromagnetic compatibility analysis and will affect the complexity of electromagnetic interference simulation if they are not removed, the parts inside the antenna cabin bottom plate model shell are removed. The removable internal parts may include the control board, drive board, filter and other parts inside the antenna cabin shell.

[0075] The main purpose of model simplification is to improve the simulation speed and avoid generating deformed meshes without affecting the simulation results. If the model is not processed, it will cause serious consequences such as slow simulation speed or even failure to simulate. In order to simplify the analysis time, only the metal part of the shell is retained, because the non-metal part has little effect on electromagnetic compatibility, which can improve the calculation speed.

[0076] Optionally, considering that the uneven surface of the antenna cabin bottom plate model will affect the model simulation operation in the electromagnetic interference simulation, the surface of the antenna cabin bottom plate model is subjected to external structural flattening. Specifically, the external structural flattening process may include filling surface pits, deleting cable connections, filling round holes, deleting chamfers of model parts, and filling screws.

[0077] S200: acquiring modeling data based on a simplified antenna bay bottom plate model; the simplified antenna bay bottom plate model includes a plurality of antennas.

[0078] The simplified antenna cabin floor model includes several connection ports and several antennas, and the modeling data is obtained, including: port data and its connection method, several antennas and their corresponding structures and performance parameters; the structure corresponding to the antenna mainly includes the transmitter, receiver, filter and antenna;

[0079] Optionally, the performance parameters of the antenna cabin floor model include ALL-Antenna-S_parameters (S parameters);

[0080] Optionally, the performance parameters corresponding to the antenna transmitter (Tx Spectral Profile properties) include: Spectrum Type, Tx Power, Peak Power, Include Phase Noise, Tx Broadband Noise, Harmonic Amplitude, Enable Harmonic BW Expansion, Number of Harmonics, Harmonic Taper, Perform Tx Intermod Analysis, engine intermodulation analysis status, Optionally, the performance parameters corresponding to the antenna receiver (Rx Spectral Profile properties) include: Sensitivity Units, Minimum Receive Signal Power, SHR at Kx Siensl Pwr (dB), Saturation signal-to-noise ratio at received signal power, Saturation Level, etc.

[0081] Optionally, the performance parameters corresponding to the antenna filter (Filter Properties) include: Insertion Loss, Stop band attenuation, Lower Stop Band, Lower Cutoff, Higher Cutoff, and Higher Stop Band0.

[0082] S300: Build a RF system model of several antennas based on a simplified antenna bay floor model and modeling data.

[0083] According to the simplified antenna cabin bottom plate model, the relevant data information of the several ports and several antennas included therein is obtained, the connection relationship between the several ports and the several antennas, the structural information of the several antennas and the performance parameters corresponding to the structure are determined, and the RF system models of the several antennas are built based on the connection relationship between the ports and the antennas, between the antennas, the structural information of the antennas and the corresponding performance parameters.

[0084] In some embodiments, the process of building a radio frequency system model of several antennas based on the simplified antenna cabin floor model and modeling data in step 300 can be implemented by the following steps:

[0085] S310: Deleting irrelevant data based on the modeling data to obtain radio frequency interference simulation data;

[0086] Based on the simplified antenna cabin bottom plate model, all relevant data of its model are obtained; Figure 2 As shown in the figure, the simplified antenna cabin floor model is input into the simulation software (such as ANSYS EMIT software), and then different types of input data of the RF environment to be modeled are selected to obtain modeling data that can be used for RF interference simulation. Through the obtained modeling data, the software framework that manages all the information required to define the complex RF environment is used to dynamically diagnose the simulation results, analyze and identify the root causes of the interference problem, and evaluate the effectiveness of the anti-interference measures, thereby ensuring that all systems can work as expected in the installation environment.

[0087] Optionally, different types of input data of the radio frequency environment to be modeled are filtered out, specifically according to different types and different scenarios, such as the number of antennas in the antenna cabin, the type of antennas, and the complex environment in which they are applied.

[0088] S320: Build several antenna RF system models based on RF interference simulation data.

[0089] Based on the acquired RF interference simulation data, data related to modeling are obtained, such as the input and output data of the ports of the simplified antenna cabin floor model, as well as the position information of several antennas, the positional relationship between antennas, the structure of the antennas and their corresponding performance parameters, etc. Using the obtained data, several antenna RF system models are built.

[0090] In some embodiments, the process of building several antenna RF system models based on RF interference simulation data in step S320 can be implemented by the following steps:

[0091] S321: based on the radio frequency interference simulation data, obtaining the port information, S parameter results and position information of several antennas in the simplified antenna cabin bottom plate model; the simplified antenna cabin bottom plate model includes several connection ports;

[0092] S322: Building radio frequency system circuit models corresponding to the plurality of antennas based on position information of the plurality of antennas;

[0093] like Figure 3 As shown, in the simulation software, according to the position information of each antenna in the simplified antenna cabin bottom plate model, a radio frequency system circuit model corresponding to each antenna is built, including: antenna, radio frequency system circuit model, etc.

[0094] S323: determining connection conditions between a plurality of connection ports of the simplified antenna cabin bottom plate model and the RF system circuit models corresponding to the plurality of antennas based on the RF system circuit models corresponding to the plurality of antennas, the port information of the simplified antenna cabin bottom plate model, and the S parameter results;

[0095] S324: setting performance parameters of the RF system circuit models corresponding to the plurality of antennas based on the RF system circuit models corresponding to the plurality of antennas, the port information of the simplified antenna cabin bottom plate model, and the S parameter results;

[0096] According to the port information and S parameter results of the simplified antenna cabin bottom plate model, the performance parameters of the equipment in the RF system circuit corresponding to several antennas are set, mainly including transmitters, receivers, filters, antennas, etc.

[0097] S325: Build several antenna RF system models based on the performance parameters of the RF system circuit models corresponding to the several antennas and the connection status between the connection ports of the simplified antenna cabin bottom plate model and the RF system circuit models corresponding to the several antennas.

[0098] Taking the shortwave antenna in the antenna cabin as an example, build its RF system in the simulation software, which mainly includes: transmitter / receiver, filter, and antenna; then, determine the corresponding connection between the bottom plate port and the shortwave antenna model based on the imported S parameter results; then, according to the RF system circuit model corresponding to the shortwave antenna and the working frequency band of the shortwave antenna, set the performance parameters of its transmitter and receiver, set the parameters of the filter, and set the frequency parameters of the passband, etc.; finally, in the configuration diagram, connect the transmitter / receiver, filter, and antenna in sequence to form a shortwave antenna RF system, such as Figures 4 to 6 As shown, Figure 4 This is an example of importing the S parameter results of a simplified antenna cabin bottom plate model into simulation software provided by an embodiment of the present invention. Figure 5 is an example of setting performance parameters of a radio frequency system circuit model corresponding to an antenna provided by an embodiment of the present invention. Figure 6 This is an example of building a radio frequency system with multiple antennas provided in an embodiment of the present invention.

[0099] S400: Simulating the radio frequency system model of the plurality of antennas, and evaluating the overall electromagnetic compatibility performance of the radio frequency system model of the plurality of antennas based on the simulation result.

[0100] Electromagnetic interference simulation is performed between several RF systems based on the RF system models corresponding to several antennas. The mutual interference between the RF system models corresponding to the several antennas is obtained based on the results of the electromagnetic interference simulation. By analyzing and processing the mutual interference between the RF system models, the overall electromagnetic compatibility performance of the RF system models of the several antennas can be evaluated.

[0101] like Figure 7 As shown, Figure 7 This is an example of building an overall RF system model of several antennas provided by an embodiment of the present invention. After completing the construction of the simulation model, the electromagnetic interference between the RF systems can be simulated, and the electromagnetic compatibility performance of the overall RF system model of several antennas can be evaluated based on the simulation results.

[0102] In some embodiments, the process of performing simulation based on the RF system models of the plurality of antennas in step S400 and evaluating the overall electromagnetic compatibility performance of the RF system models of the plurality of antennas based on the simulation results may be implemented by the following steps:

[0103] S410: performing simulation based on the radio frequency system models of the plurality of antennas, and calculating mutual interference between any two radio frequency systems in the radio frequency system models of the plurality of antennas based on the simulation results;

[0104] By simulating several antenna RF system models working simultaneously in the simulation software, the interference matrix results between any two RF systems can be obtained through EMIT simulation calculation; the interference matrix results can describe the mutual interference between RF systems.

[0105] Optionally, the interference matrix results can be expressed in the form of EMI margin in the simulation software. By default, red indicates positive EMI margin, and the value of EMI margin is greater than 0dB, which means there is interference; green indicates that the value of EMI margin is less than -10dB, and there is no interference by default; yellow indicates that the value of EMI margin is between -10dB and 0dB, and there is a small amount of interference by default. Secondly, the standard of interference margin can also be set according to the actual situation to evaluate the mutual interference between RF systems.

[0106] S420: Based on the mutual interference between any two radio frequency systems in the radio frequency system model of the plurality of antennas, the overall electromagnetic compatibility performance of the radio frequency system of the plurality of antennas is evaluated.

[0107] The interference between any two RF systems obtained through simulation is reflected in the form of interference matrix results. Based on the interference between any two RF systems in the RF system model of several antennas, an interference matrix table is constructed; Figure 8 This is an example of constructing an interference matrix table for the mutual interference between any two RF systems in a RF system model based on several antennas provided by an embodiment of the present invention. The interference matrix table can be used to quickly and intuitively analyze the overall electromagnetic compatibility performance of the RF system of several antennas. According to the interference values ​​in the interference matrix table, it can be obtained whether there is mutual interference between any two RF systems. By analogy, when there is no mutual interference between any two RF systems, it can be considered that there is no mutual interference in the entire interference matrix, and the antenna layout in the corresponding antenna cabin is relatively good, and the electromagnetic compatibility performance is good.

[0108] The implementation of the embodiments of the present invention includes the following beneficial effects:

[0109] The present invention solves the mutual interference of each antenna radio frequency system in the antenna cabin when working through the method of electromagnetic interference simulation, and evaluates its electromagnetic compatibility performance based on the interference matrix table of each antenna radio frequency system obtained by simulation. The method provided by the present invention can quickly and intuitively evaluate the mutual interference of each antenna radio frequency system when working; when there is no mutual interference when each antenna radio frequency system is working, it proves that the antenna layout in the antenna cabin is good, there is no mutual coupling problem between antennas, and good electromagnetic compatibility can be achieved, saving development costs and improving cost-effectiveness.

[0110] like Fig. 9As shown, an embodiment of the present invention further provides an electromagnetic compatibility evaluation system, including: a first module, a second module, a third module, a fourth module and simulation software.

[0111] The first module is used to obtain antenna cabin bottom plate model data, and calculate a simplified antenna cabin bottom plate model based on the antenna cabin bottom plate model data and preset simplified conditions;

[0112] The second module is used to obtain modeling data based on a simplified antenna cabin bottom plate model; the simplified antenna cabin bottom plate model includes a plurality of antennas;

[0113] The third module is used to build a radio frequency system model of several antennas based on the modeling data;

[0114] The fourth module is to simulate the RF system model of several antennas and evaluate the overall electromagnetic compatibility performance of the RF system model of several antennas based on the simulation results.

[0115] The simulation software is used to realize the system functions of the second module, the third module and the fourth module.

[0116] It can be seen that the contents of the above method embodiments are all applicable to the present system embodiments, the functions specifically implemented by the present system 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.

[0117] like Fig.10 As shown, the embodiment of the present invention also provides an electromagnetic compatibility evaluation device, including:

[0118] at least one processor;

[0119] at least one memory for storing at least one program;

[0120] When at least one program is executed by at least one processor, the at least one processor implements the evaluation method steps of the above method embodiment.

[0121] Among them, the memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. The memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a remote memory remotely arranged relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0122] It can be seen that the contents of the above method embodiments are all applicable to the present device embodiments, the functions specifically 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.

[0123] In addition, the embodiment of the present application also discloses a computer program product or a computer program, which is stored in a computer-readable storage medium. The processor of the computer device can read the computer program from the computer-readable storage medium, and the processor executes the computer program, so that the computer device performs the above-mentioned evaluation method.

[0124] The embodiment of the present invention further provides a computer-readable storage medium, which stores a program executable by a processor, and the program executable by the processor is used to implement the above-mentioned evaluation method when executed by the processor. Similarly, the contents in the above-mentioned method embodiment are all applicable to the present storage medium embodiment, and the functions specifically implemented by the present storage medium embodiment are the same as those in the above-mentioned method embodiment, and the beneficial effects achieved are also the same as those achieved by the above-mentioned method embodiment.

[0125] It is understood that all or some steps and systems in the disclosed method above can be implemented as software, firmware, hardware and appropriate combinations thereof. Some physical components or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, and the computer-readable medium can include a computer storage medium (or a non-transitory medium) and a communication medium (or a temporary medium). As known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassette, magnetic tape, disk storage or other magnetic storage device, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0126] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An electromagnetic compatibility assessment method, characterized in that: include: Acquire an antenna cabin bottom plate model, and calculate a simplified antenna cabin bottom plate model based on the antenna cabin bottom plate model and preset simplified conditions; Based on the simplified antenna cabin bottom plate model, obtaining modeling data; The simplified antenna cabin bottom plate model includes a plurality of antennas; Building a plurality of radio frequency system models of the antennas based on the simplified antenna cabin bottom plate model and the modeling data; Simulation is performed based on the radio frequency system models of the plurality of antennas, and based on the simulation results, the overall electromagnetic compatibility performance of the radio frequency system models of the plurality of antennas is evaluated.

2. An electromagnetic compatibility evaluation method as claimed in claim 1, characterized in that: The step of calculating a simplified antenna cabin bottom plate model based on the antenna cabin bottom plate model and preset simplified conditions includes: Based on preset simplification conditions, the antenna bay floor model is subjected to internal irrelevant parts removal and external structure flattening processing, and a simplified antenna bay floor model is obtained by calculation.

3. An electromagnetic compatibility evaluation method as claimed in claim 2, characterized in that: Based on the preset simplification conditions, the antenna cabin bottom plate model is subjected to internal irrelevant parts removal and external structure flattening processing to calculate and obtain a simplified antenna cabin bottom plate model, including: Based on the antenna cabin bottom plate model, obtaining internal part structure data and surface structure data of the antenna cabin bottom plate model; Based on the internal parts construction data, the parts inside the antenna bay floor model that have no effect on the electromagnetic compatibility analysis are removed; and based on the surface construction data, the external structure of the antenna bay floor model is smoothed to calculate and obtain the simplified antenna bay floor model.

4. The electromagnetic compatibility evaluation method according to claim 1, characterized in that: The step of building a plurality of radio frequency system models of the antennas based on the modeling data includes: Deleting irrelevant data based on the modeling data to obtain radio frequency interference simulation data; Based on the RF interference simulation data, several antenna RF system models are built.

5. An electromagnetic compatibility evaluation method as claimed in claim 4, characterized in that: Based on the radio frequency interference simulation data, several antenna radio frequency system models are built, including: Based on the radio frequency interference simulation data, obtaining port information, S parameter results and position information of several antennas in the simplified antenna cabin bottom plate model; the simplified antenna cabin bottom plate model includes several connection ports; Based on the position information of the plurality of antennas, building a radio frequency system circuit model corresponding to the plurality of antennas; Determine the connection status of the plurality of connection ports of the simplified antenna cabin bottom plate model and the plurality of RF system circuit models corresponding to the antennas based on the RF system circuit models corresponding to the plurality of antennas, the port information of the simplified antenna cabin bottom plate model and the S parameter results; Setting performance parameters of the RF system circuit models corresponding to the antennas based on the RF system circuit models corresponding to the antennas, the port information of the simplified antenna cabin bottom plate model, and the S parameter results; Based on the performance parameters of the RF system circuit models corresponding to the antennas and the connection status between the connection ports of the simplified antenna cabin bottom plate model and the RF system circuit models corresponding to the antennas, several antenna RF system models are built.

6. The electromagnetic compatibility evaluation method according to claim 1, characterized in that: The simulating based on the radio frequency system model of the plurality of antennas and evaluating the electromagnetic compatibility performance of the radio frequency systems of the plurality of antennas based on the simulation results includes: Perform simulation based on the radio frequency system models of the plurality of antennas, and calculate the mutual interference between any two radio frequency systems in the radio frequency system models of the plurality of antennas based on the simulation results; Based on the mutual interference between any two of the radio frequency systems in the radio frequency system models of the plurality of antennas, the electromagnetic compatibility performance of the radio frequency systems of the plurality of antennas is evaluated.

7. An electromagnetic compatibility evaluation method as claimed in claim 6, characterized in that: The step of evaluating the electromagnetic compatibility performance of the overall RF system model of the plurality of antennas based on the mutual interference between any two RF systems in the RF system model of the plurality of antennas comprises: Based on the mutual interference between any two of the radio frequency systems in the radio frequency system models of the plurality of antennas, an interference matrix result between any two of the radio frequency systems is calculated; Based on the interference matrix results between any two of the radio frequency systems, construct an interference matrix table of the entire radio frequency system of the plurality of antennas; Based on the interference matrix table, the overall electromagnetic compatibility performance of the radio frequency system model of the plurality of antennas is evaluated.

8. An electromagnetic compatibility evaluation system, characterized in that: include: The first module is used to obtain antenna cabin bottom plate model data, and calculate a simplified antenna cabin bottom plate model based on the antenna cabin bottom plate model data and preset simplified conditions; The second module is used to obtain modeling data based on the simplified antenna cabin bottom plate model; The simplified antenna cabin bottom plate model includes a plurality of antennas; A third module is used to build a radio frequency system model of several antennas based on the modeling data; The fourth module performs simulation based on the radio frequency system models of the plurality of antennas, and evaluates the overall electromagnetic compatibility performance of the radio frequency system models of the plurality of antennas based on the simulation results.

9. An electromagnetic compatibility evaluation device, characterized in that: include: at least one processor; at least one memory for storing at least one program; When the at least one program is executed by the at least one processor, the at least one processor implements the evaluation method according to any one of claims 1 to 7.

10. A computer-readable storage medium storing a program executable by a processor, characterized in that: The processor-executable program is used to perform the evaluation method according to any one of claims 1 to 7 when executed by the processor.

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