Electromagnetic Interference Shielding Cover Gap Design Method, Device, Equipment and Storage Medium

Abstract

The present application provides a method, device, equipment and storage medium for designing the gap of an electromagnetic interference shielding cover. The method for designing the gap of the electromagnetic interference shielding cover includes: creating a simulation model corresponding to the shielding cover, performing electromagnetic field characteristic simulation on the simulation model to obtain initial electromagnetic radiation parameters; adjusting the simulation model according to the initial electromagnetic radiation parameters, performing electromagnetic field characteristic simulation on the adjusted simulation model to obtain target electromagnetic radiation parameters; if the target electromagnetic radiation parameters match the preset standard parameters, output the gap size information of the shielding cover according to the adjusted simulation model. Designing and simulating for shielding cover optimization reduces the loss of proofing cost and man-hour loss, and greatly reduces the design cost.

Description

Technical Field

[0001] The present application relates to the technical field of electromagnetic shielding, and particularly relates to a method, device, equipment and storage medium for designing gaps in an electromagnetic interference shielding cover. Background Art

[0002] Currently, in many circuit designs, due to the characteristics of the circuit, a certain part of the circuit may generate strong EMI (Electromagnetic Interference, abbreviated as EMI) radiation, resulting in the EMI radiation of the circuit exceeding the relevant international standard limit requirements. Usually, a shielding cover needs to be provided for it to shield the generated EMI radiation. However, when designing the shielding cover, it is necessary to design some gaps on the shielding body to provide channels for signal traces between chips and devices, resulting in the inevitable existence of gaps in the shielding cover. The length * height dimension of this sub-gap will affect the shielding performance of the shielding cover.

[0003] In the prior art, after designing a shielding cover sample, it is detected through a semi-anechoic chamber. If the sample fails the detection, it needs to be re-sampled and then detected again through the semi-anechoic chamber, which will greatly increase the cycle and cost of the entire shielding cover design. Summary of the Invention

[0004] The present application provides a method, device, equipment and storage medium for designing gaps in an electromagnetic interference shielding cover, which abandons the traditional design scheme of proofing and verification, optimizes the shielding cover through design simulation, reduces the loss of proofing cost and man-hour loss, and greatly reduces the design cost.

[0005] On the one hand, the present application provides a method for designing gaps in an electromagnetic interference shielding cover, including:

[0006] Create a simulation model corresponding to the shielding cover, perform electromagnetic field characteristic simulation on the simulation model, and obtain initial electromagnetic radiation parameters;

[0007] Adjust the simulation model according to the initial electromagnetic radiation parameters, perform electromagnetic field characteristic simulation on the adjusted simulation model, and obtain target electromagnetic radiation parameters;

[0008] If the target electromagnetic radiation parameters match the preset standard parameters, output the gap size information of the shielding cover according to the adjusted simulation model.

[0009] In a possible implementation manner of the present application, the step of "if the target electromagnetic radiation parameters match the preset standard parameters, output the gap size information of the shielding cover according to the adjusted simulation model" includes:

[0010] Calculate the optimization value of the initial electromagnetic radiation parameters relative to the target electromagnetic radiation parameters;

[0011] If the optimized value matches the preset standard parameter, the gap size information of the shielding cover is output according to the adjusted simulation model, and the preset standard parameter is the preset standard optimized value.

[0012] In a possible implementation manner of the present application, creating a simulation model corresponding to the shielding cover, and performing electromagnetic field characteristic simulation on the simulation model to obtain initial electromagnetic radiation parameters, including:

[0013] Create a three-dimensional physical model including the shielding cover and the circuit structure to be shielded;

[0014] Convert the three-dimensional physical model into a simulation model;

[0015] Input a simulation excitation corresponding to the circuit high-frequency signal corresponding to the preset standard parameter into the simulation model, and obtain initial electromagnetic radiation parameters, where the initial electromagnetic radiation parameters include the initial electromagnetic radiation intensity at the gap of the shielding cover and the initial electromagnetic radiation intensity at a preset detection distance.

[0016] In a possible implementation manner of the present application, adjusting the simulation model according to the initial electromagnetic radiation parameters, and performing electromagnetic field characteristic simulation on the adjusted simulation model to obtain target electromagnetic radiation parameters, including:

[0017] Adjust the gap parameters of the three-dimensional physical model based on the initial electromagnetic radiation intensity at the gap;

[0018] Convert the three-dimensional physical model with adjusted gap parameters into a simulation model to obtain an adjusted simulation model;

[0019] Input a simulation excitation corresponding to the circuit high-frequency signal corresponding to the preset standard parameter into the adjusted simulation model, and obtain target electromagnetic radiation parameters, where the target electromagnetic radiation parameters include the target electromagnetic radiation intensity at the gap after adjusting the gap parameters and the target electromagnetic radiation intensity at a preset detection distance.

[0020] In a possible implementation manner of the present application, adjusting the gap parameters of the three-dimensional physical model based on the initial electromagnetic radiation intensity at the gap includes:

[0021] Compare the initial electromagnetic radiation intensity at each gap, and adjust the gap size parameter corresponding to the gap with a stronger initial electromagnetic radiation intensity in the three-dimensional physical model.

[0022] In a possible implementation manner of the present application, after adjusting the simulation model according to the initial electromagnetic radiation parameters, and performing electromagnetic field characteristic simulation on the adjusted simulation model to obtain target electromagnetic radiation parameters, it further includes:

[0023] If the target electromagnetic radiation parameter does not match the preset standard parameter, adjust the simulation model, perform electromagnetic field characteristic simulation on the adjusted simulation model to obtain a new target electromagnetic radiation parameter until the new target electromagnetic radiation parameter matches the preset standard parameter;

[0024] Then output the gap size information of the shielding cover according to the adjusted simulation model.

[0025] In a possible implementation manner of the present application, the step of, if the target electromagnetic radiation parameter matches the preset standard parameter, then outputting the gap size information of the shielding cover according to the adjusted simulation model includes:

[0026] Compare the electromagnetic intensity optimization value of the target electromagnetic radiation intensity at the preset detection distance relative to the initial electromagnetic radiation intensity at the preset detection distance;

[0027] Match the optimization value with a preset standard optimization value;

[0028] If the optimization value is greater than or equal to the preset standard optimization value, then match, and output the gap size information of the shielding cover according to the adjusted simulation model.

[0029] In a possible implementation manner of the present application, after obtaining the improvement value of the target electromagnetic radiation parameter based on the initial electromagnetic radiation parameter, matching the improvement value with a preset standard improvement value, and optimizing the target electromagnetic radiation parameter based on the matching result until the improvement value matches the preset standard improvement value to obtain the final shielding cover gap size, it further includes:

[0030] Obtain the electromagnetic frequency domain diagram before adjustment and the electromagnetic frequency domain diagram after final adjustment of the shielding cover;

[0031] Perform data analysis and matching on the electromagnetic frequency domain diagram before adjustment and the electromagnetic frequency domain diagram after final adjustment;

[0032] If they match, output that the gap size information of the shielding cover according to the adjusted simulation model is correct.

[0033] On the other hand, the present application provides an electromagnetic interference shielding cover gap design device, and the device includes:

[0034] The first simulation module: used to create a simulation model corresponding to the shielding cover, perform electromagnetic field characteristic simulation on the simulation model to obtain an initial electromagnetic radiation parameter;

[0035] The second simulation module: used to adjust the simulation model according to the initial electromagnetic radiation parameter, perform electromagnetic field characteristic simulation on the adjusted simulation model to obtain a target electromagnetic radiation parameter;

[0036] Matching module: If the target electromagnetic radiation parameter matches the preset standard parameter, output the gap size information of the shielding cover according to the adjusted simulation model.

[0037] On the other hand, the present application provides an electromagnetic interference shielding cover gap design device, and the device includes:

[0038] One or more processors;

[0039] A memory; and

[0040] One or more applications, wherein the one or more applications are stored in the memory and are configured to execute the electromagnetic interference shielding cover gap design method by the processor.

[0041] On the other hand, the present application provides a computer-readable storage medium, on which a computer program is stored, and the computer program is loaded by a processor to execute the steps in the electromagnetic interference shielding cover gap design method.

[0042] In the technical solution of the present application, electromagnetic simulation is performed on the shielding cover design simulation model, and the result of the electromagnetic simulation is evaluated based on the preset standard parameter, so as to realize the correction of the gap size of the shielding cover. The technical solution of making samples again and again and correcting again and again in the prior art is abandoned, the sample making time and the sample making cost are reduced, the versatility is stronger, and the design cost is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

[0044] Figure 1 is a scenario schematic diagram of the electromagnetic interference shielding cover gap design method provided by the embodiment of the present application;

[0045] Figure 2 is a schematic flowchart of an embodiment of the electromagnetic interference shielding cover gap design method provided by the embodiment of the present application;

[0046] Figure 3 is a schematic flowchart of an embodiment of obtaining the initial electromagnetic radiation parameter in the electromagnetic interference shielding cover gap design method provided by the embodiment of the present application;

[0047] Figure 4 is a schematic flowchart of an embodiment of obtaining the target electromagnetic radiation parameter in the electromagnetic interference shielding cover gap design method provided by the embodiment of the present application;

[0048] Figure 5 It is a schematic flowchart of an embodiment for obtaining gap size information in the electromagnetic interference shielding cover gap design method provided in the embodiment of the present application;

[0049] Figure 6 It is a schematic flowchart of an embodiment for verifying the obtained gap size information in the electromagnetic interference shielding cover gap design method provided in the embodiment of the present application;

[0050] Figure 7 It is a schematic structural diagram of an embodiment of the electromagnetic interference shielding cover gap design device provided in the embodiment of the present application;

[0051] Figure 8 It is a schematic structural diagram of an embodiment of the electromagnetic interference shielding cover gap design device provided in the embodiment of the present application. Detailed implementation manners

[0052] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0054] In this application, the term "exemplary" is used to mean "serving as an example, instance, or illustration". Any embodiment described as "exemplary" in this application is not necessarily to be construed as more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the present invention. In the following description, details are set forth for purposes of explanation. It should be understood that those of ordinary skill in the art can recognize that the present invention can be implemented without these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present invention with unnecessary details. Therefore, the present invention is not intended to be limited to the embodiments shown, but rather to be in line with the broadest scope consistent with the principles and features disclosed in this application.

[0055] An embodiment of this application provides a method, apparatus, device, and storage medium for designing the gap of an electromagnetic interference shielding cover, which will be described in detail below.

[0056] The method for designing the gap of the electromagnetic interference shielding cover in the embodiment of the present invention is applied to the device for designing the gap of the electromagnetic interference shielding cover. The device for designing the gap of the electromagnetic interference shielding cover is provided in the device for designing the gap of the electromagnetic interference shielding cover. One or more processors, memories, and one or more application programs are provided in the device for designing the gap of the electromagnetic interference shielding cover. One or more application programs are stored in the memory and configured to be executed by the processor to implement the method for designing the gap of the electromagnetic interference shielding cover. The device for designing the gap of the electromagnetic interference shielding cover may be a terminal, for example, a mobile phone or a tablet computer. The device for designing the gap of the electromagnetic interference shielding cover may also be an emulator, a server, or a service cluster composed of multiple servers. Among them, the emulator can replace the MCU in the system for designing the gap of the electromagnetic interference shielding cover and simulate its operation, including software emulators and hardware emulators.

[0057] As Figure 1 shown, Figure 1 is a schematic diagram of the scenario of the method for designing the gap of the electromagnetic interference shielding cover in the embodiment of this application. In the scenario of designing the gap of the electromagnetic interference shielding cover in the embodiment of the present invention, it includes a device 100 for designing the gap of the electromagnetic interference shielding cover (the device 100 for designing the gap of the electromagnetic interference shielding cover is integrated with a device for designing the gap of the electromagnetic interference shielding cover). The storage medium corresponding to the design of the gap of the electromagnetic interference shielding cover runs in the device 100 for designing the gap of the electromagnetic interference shielding cover to execute the steps of designing the gap of the electromagnetic interference shielding cover.

[0058] It can be understood that Figure 1The electromagnetic interference shielding cover gap design device in the scenario of electromagnetic interference shielding cover gap design, or the devices included in the electromagnetic interference shielding cover gap design device do not constitute a limitation to the embodiments of the present invention. That is, the number and types of devices included in the scenario of electromagnetic interference shielding cover gap design, or the number and types of devices included in each device, do not affect the overall implementation of the technical solution in the embodiments of the present invention, and can all be regarded as equivalent replacements or derivatives of the technical solution claimed in the embodiments of the present invention.

[0059] In the embodiments of the present invention, the electromagnetic interference shielding cover gap design device 100 is mainly used for: creating a simulation model corresponding to the shielding cover, performing electromagnetic field characteristic simulation on the simulation model to obtain initial electromagnetic radiation parameters; adjusting the simulation model according to the initial electromagnetic radiation parameters, performing electromagnetic field characteristic simulation on the adjusted simulation model to obtain target electromagnetic radiation parameters; if the target electromagnetic radiation parameters match the preset standard parameters, outputting the gap size information of the shielding cover according to the adjusted simulation model.

[0060] In the embodiments of the present invention, the electromagnetic interference shielding cover gap design device 100 can be an independent electromagnetic interference shielding cover gap design device, or a network or cluster of electromagnetic interference shielding cover gap design devices composed of electromagnetic interference shielding cover gap design devices. For example, the electromagnetic interference shielding cover gap design device 100 described in the embodiments of the present invention includes, but is not limited to, a computer, a network host, a single network electromagnetic interference shielding cover gap design device, a set of multiple network electromagnetic interference shielding cover gap design devices, or a cloud electromagnetic interference shielding cover gap design device composed of multiple electromagnetic interference shielding cover gap design devices. Among them, the cloud electromagnetic interference shielding cover gap design device is composed of a large number of computers or network electromagnetic interference shielding cover gap design devices based on cloud computing.

[0061] Those skilled in the art can understand that Figure 1 the application environment shown in Figure 1 is only one application scenario of the solution of the embodiments of the present application, and does not constitute a limitation to the application scenarios of the solution of the embodiments of the present application. Other application environments may also include more or fewer electromagnetic interference shielding cover gap design devices than those shown in Figure 1 For example, only 1 electromagnetic interference shielding cover gap design device is shown in

[0062] In addition, in the scenario of the electromagnetic interference shielding cover gap design in the embodiments of the present application, the electromagnetic interference shielding cover gap design device 100 may be provided with a display device, or the electromagnetic interference shielding cover gap design device 100 may not be provided with a display device and is communicatively connected to an external display device 200. The display device 200 is used to output the result of the execution of the electromagnetic interference shielding cover gap design method in the electromagnetic interference shielding cover gap design device. The electromagnetic interference shielding cover gap design device 100 may access a background database 300 (the background database may be in the local memory of the electromagnetic interference shielding cover gap design device, and the background database may also be set in the cloud). The background database 300 stores information related to the electromagnetic interference shielding cover gap design.

[0063] It should be noted that Figure 1 The schematic diagram of the scenario of the electromagnetic interference shielding cover gap design shown is only an example. The scenario of the electromagnetic interference shielding cover gap design described in the embodiments of the present invention is for more clearly explaining the technical solutions of the embodiments of the present invention, and does not constitute a limitation on the technical solutions provided by the embodiments of the present invention.

[0064] Based on the above scenario of the electromagnetic interference shielding cover gap design, embodiments of the electromagnetic interference shielding cover gap design method are proposed.

[0065] As Figure 2 shown, Figure 2 is a schematic flowchart of the first embodiment of the electromagnetic interference shielding cover gap design method in the embodiments of the present application, and is a schematic flowchart of an embodiment of the electromagnetic interference shielding cover gap design method in the embodiments of the present application. The electromagnetic interference shielding cover gap design method includes steps 201-203:

[0066] 201. Create a simulation model corresponding to the shielding cover, perform electromagnetic field characteristic simulation on the simulation model, and obtain initial electromagnetic radiation parameters.

[0067] In this implementation solution, the electromagnetic interference shielding cover gap design method is applied to an electromagnetic interference shielding cover gap design device or a simulation laboratory platform communicatively connected to the electromagnetic interference shielding cover gap design device. The type of the electromagnetic interference shielding cover gap design device is not specifically limited. For example, the electromagnetic interference shielding cover gap design device is a terminal or a server. In this embodiment, the terminal is taken as an example for illustration.

[0068] It can be understood that the computer program corresponding to the electromagnetic interference shielding cover gap design method runs independently, and the computer program corresponding to the electromagnetic interference shielding cover gap design method can be directly installed on the terminal to implement the electromagnetic interference shielding cover gap design.

[0069] The terminal creates a simulation model corresponding to the shielding case, simulates the electromagnetic field characteristics of the simulation model, and obtains initial electromagnetic radiation parameters. That is, when the terminal receives the modeling parameters corresponding to the shielding case parameters that require slot size adjustment, it creates a simulation model corresponding to the shielding case parameters that require slot size adjustment according to the modeling parameters. It can be understood that the design of the shielding case is to shield the electromagnetic radiation generated by the circuit. Therefore, the simulation model includes the circuit to be shielded corresponding to the shielding case, and the simulation model includes the shielding case model and the corresponding circuit model to be shielded. Correspondingly, the modeling parameters include the data of the circuit to be shielded and the shielding case data. By inputting electromagnetic excitation into the circuit to be shielded in the simulation model for electromagnetic field characteristic simulation, the circuit to be detected in the simulation model responds to the electromagnetic excitation to generate electromagnetic field radiation, observes the electromagnetic radiation intensity after being shielded by the shielding case, and obtains the initial electromagnetic radiation parameters leaked from the slot of the shielding case at the desired position after being shielded by the shielding case through means such as data extraction.

[0070] In the implementation scheme of this application, the method of creating a simulation model corresponding to the shielding case is not specifically limited. For example:

[0071] Implementation method 1: The terminal receives a three-dimensional physical model including the shielding case and the PCBA board of the circuit to be shielded through a receiving port. The three-dimensional physical model is drawn through a three-dimensional drawing system or software based on the shielding case data and the data of the circuit to be shielded, and S-parameter extraction is performed on the three-dimensional physical model to obtain the corresponding simulation model.

[0072] Implementation method 2: The terminal obtains the shielding case data and the data of the circuit to be shielded, creates a corresponding three-dimensional physical model according to the shielding case data and the data of the circuit to be shielded, and performs S-parameter extraction on the three-dimensional physical model to obtain the corresponding simulation model.

[0073] It can be understood that the shielding case data includes the shielding case slot size data. Among them, the shielding case slot is used to provide a wiring path for the circuit board. Therefore, the slot of the shielding case is the slot between the shielding case installed on the PCBA circuit board corresponding to the circuit to be shielded, and the size of the shielding case slot is the height between the shielding case and the PCBA circuit board and the length of the shielding case slot parallel to the PCBA circuit board direction.

[0074] Among them, the initial electromagnetic radiation parameters include the initial electromagnetic radiation intensity at a preset detection distance. The predicted detection distance can be 3 meters, 10 meters, etc., which is preset according to the usage environment of different circuits to be shielded and the corresponding electromagnetic radiation standards. The establishment of electromagnetic radiation standards avoids environmental pollution caused by electromagnetic radiation generated by the circuit environment. It can be understood that electromagnetic radiation standards impose standard restrictions on the electromagnetic radiation level of electronic devices. It can be understood that due to the closed characteristics of the shielding cover, in order to ensure wiring while not damaging the shielding performance, multiple gaps are set to meet the wiring requirements while taking into account electromagnetic shielding. In some other embodiments of the present invention, the initial electromagnetic radiation parameters may further include the initial electromagnetic radiation intensity at the gaps of the shielding cover, which is used to detect the electromagnetic radiation leakage at each gap in the shielding cover.

[0075] By creating a simulation model, generating a simulation environment, and performing simulation of electromagnetic field characteristics, the initial electromagnetic radiation parameters are obtained, and the initial results for evaluating the shielding performance of the shielding cover are obtained, which is convenient for providing a direction and basis for subsequent improvement.

[0076] 202. Adjust the simulation model according to the initial electromagnetic radiation parameters, and perform electromagnetic field characteristic simulation on the adjusted simulation model to obtain the target electromagnetic radiation parameters.

[0077] The terminal adjusts the simulation model according to the initial electromagnetic radiation parameters, performs electromagnetic field characteristic simulation on the adjusted simulation model to obtain the target electromagnetic radiation parameters. That is, since electromagnetic radiation corresponds to the gap size of the shielding cover, by adjusting the parameters corresponding to the gap size of the shielding cover in the simulation model, the magnitude of electromagnetic radiation is changed to meet the standard electromagnetic radiation requirements. It can be understood that the shielding covers that need to be adjusted are basically those with excessive electromagnetic radiation that require reducing the size of the shielding cover. If the electromagnetic radiation is not excessive, there is no need to modify the gap size. Therefore, the gaps with excessive electromagnetic radiation can be identified according to the initial electromagnetic radiation parameters, and the gap size at that place can be modified to be smaller. Specifically, the gap length or height of the shielding cover can be reduced, or both the length and height can be reduced simultaneously, which can be adjusted according to actual needs, so as to reduce the leakage of electromagnetic radiation. Then, by inputting electromagnetic excitation to the circuit to be shielded in the adjusted simulation model for electromagnetic field characteristic simulation, the circuit to be detected in the simulation model responds to the electromagnetic excitation to generate electromagnetic field radiation, and the electromagnetic radiation intensity after being shielded by the shielding cover is observed, and the target electromagnetic radiation parameters leaking from the gaps of the shielding cover at the desired positions are obtained through means such as data extraction.

[0078] In some embodiments of the present application, the specific implementation for adjusting the simulation model according to the initial electromagnetic radiation parameters is not specifically limited by the present invention. For example:

[0079] Implementation method 1: The initial electromagnetic radiation parameters include the initial electromagnetic radiation intensity at a preset detection distance. If the initial electromagnetic radiation intensity at the preset detection distance is quite different from the standard distance, the adjustment amplitude of the gap size at any gap of the shielding cover corresponding to the simulation model is made larger, that is, the adjusted size has a larger difference compared to the size before adjustment.

[0080] Implementation method 2: The initial electromagnetic radiation parameters include the initial electromagnetic radiation intensity at a preset detection distance. If the initial electromagnetic radiation intensity at the preset detection distance is quite different from the standard distance, the gap sizes at all the gaps of the shielding cover corresponding to the simulation model are adjusted.

[0081] Implementation method 3: The initial electromagnetic radiation parameters include the initial electromagnetic radiation intensity at a preset detection distance and the initial electromagnetic radiation intensity at the gaps of the shielding cover. The initial electromagnetic radiation intensity at the gaps of the shielding cover is used to adjust the gaps with a large electromagnetic radiation leakage amount. If the initial electromagnetic radiation intensity at the preset detection distance is larger, the adjustment amplitude is larger; otherwise, the adjustment is smaller, and the adjusted simulation model is obtained.

[0082] By modifying the simulation model based on the initial electromagnetic radiation parameters and performing simulation again, the target electromagnetic radiation parameters after adjusting the gap parameters of the shielding cover are obtained, replacing the technical solution of re - sampling and re - conducting semi - anechoic chamber experiment verification in the prior art, greatly reducing the R & D cost.

[0083] It can be understood that since the shielding cover is arranged above the circuit to be shielded, and for the circuit wiring requirements, there are not only one gap in the shielding cover, but there may be gaps around it. However, only one or several gaps may have excessive electromagnetic radiation. By modifying the gap size at the gaps with excessive electromagnetic radiation, the effectiveness of the modification can be ensured, the number of times of modifying the gap size of the shielding cover can be reduced, and the correct shielding cover size can be obtained quickly.

[0084] 203. If the target electromagnetic radiation parameters match the preset standard parameters, the gap size information of the shielding cover is output according to the adjusted simulation model.

[0085] The terminal judges the target electromagnetic radiation parameters based on the preset standard parameters. If the target electromagnetic radiation parameters match the preset standard parameters, the gap size information of the shielding cover is output according to the adjusted simulation model, that is, if the target electromagnetic radiation parameters match the preset standard parameters, it means that the electromagnetic radiation leakage at the gaps of the shielding cover corresponding to the simulation model of the target electromagnetic radiation parameters meets the electromagnetic radiation standard, that is, the gap size at this time can be compatible with wiring and electromagnetic shielding. Among them, the gap size information is the length and height information of the shielding cover.

[0086] Among them, in some embodiments of the present application, the preset standard parameter can be a standard electromagnetic radiation parameter, or a preset standard value that needs to be optimized for the standard radiation parameter corresponding to the shielding cover before adjusting the gap size. That is, the value by which the electromagnetic radiation intensity of the shielding cover at the preset detection distance needs to be reduced relative to the standard electromagnetic radiation. It can be understood that, in order to ensure the accuracy of the preset standard optimization value, the preset standard optimization value can be obtained by making a sample of the shielding cover and detecting the shielding cover through a semi-anechoic chamber experiment. That is, before the simulation experiment, the shielding cover is calculated based on the resonant frequency of the circuit to be shielded, and a sample of the shielding cover is made. The electromagnetic radiation intensity at the preset detection distance of the shielding cover is verified by inputting a high-frequency signal of the circuit through a semi-anechoic chamber experiment. Based on the electromagnetic radiation standard, the preset standard optimization value that needs to be improved for the corresponding shielding cover is obtained, that is, the electromagnetic radiation intensity that the shielding cover still needs to be improved compared with the electromagnetic radiation standard. Obtaining the preset standard optimization value through a semi-anechoic chamber experiment as the judgment benchmark for the target electromagnetic radiation ensures the accuracy of the data. The present application does not specifically limit the matching judgment method between the target electromagnetic radiation parameter and the preset standard parameter, including:

[0087] Implementation method 1: The preset standard parameter is the optimization value that needs to be optimized for the standard radiation parameter corresponding to the shielding cover before adjusting the gap size. By calculating the optimization value of the target electromagnetic radiation parameter compared with the initial electromagnetic radiation parameter, if the optimization value is equal to the preset standard parameter or within the error range, it is considered a match.

[0088] Among them, when the preset standard parameter is the optimization value that needs to be optimized for the standard radiation parameter corresponding to the shielding cover before adjusting the gap size, the

[0089] Implementation method 2: The preset standard parameter is the standard radiation parameter. If the target electromagnetic radiation parameter is equal to the preset standard parameter or within the error range, it is considered a match.

[0090] By judging the matching between the target electromagnetic radiation parameter and the preset standard parameter, it is used to judge whether the gap size meets the shielding standard.

[0091] See Figure 3 , Figure 3 is a schematic flowchart of an embodiment for obtaining the initial electromagnetic radiation parameter in the electromagnetic interference shielding cover gap design method provided in the embodiment of the present application.

[0092] In the electromagnetic interference shielding cover gap design method in the embodiment of the present application, the terminal obtains the shielding cover data and the data of the circuit to be shielded. Specifically, it includes steps 301 - step 303:

[0093] 301. Create a three-dimensional physical model including the structure of the shielding cover and the circuit to be shielded.

[0094] 302. Convert the three-dimensional physical model into a simulation model.

[0095] 303. Input a simulation excitation corresponding to the high-frequency circuit signal corresponding to the preset standard parameters into the simulation model, and obtain initial electromagnetic radiation parameters, where the initial electromagnetic radiation parameters include the initial electromagnetic radiation intensity at the gap of the shielding case and the initial electromagnetic radiation intensity at a preset detection distance.

[0096] The terminal obtains the shielding case data and the corresponding circuit data to be shielded. The circuit data to be shielded includes PCBA circuit board data. Among them, the PCBA circuit board data includes circuit connection relationships, circuit element parameters, and connection relationships. The shielding case gap parameters include the shielding case gap and related modeling parameters, such as installation positions, etc. According to the shielding case data and the circuit data to be shielded, a three-dimensional physical model including the PCBA circuit board and the shielding case is created, and S-parameter extraction is performed on the three-dimensional physical model to obtain a corresponding simulation model. It can be understood that the full name of the S-parameter is the Scatter parameter, that is, the scattering parameter. The S-parameter describes the frequency-domain characteristics of the transmission channel. When performing serial link signal integrity (SI) analysis, obtaining accurate S-parameters of the channel is a very important link. Through the S-parameters, we can see almost all the characteristics of the transmission channel. Among them, the gap size of the shielding case is calculated by the resonant frequency of the circuit to be shielded. The electromagnetic wavelength generated by calculating through the resonant frequency is used to obtain the shielding case gap parameters based on the electromagnetic radiation wavelength. This analysis size is the shielding case analysis size parameter before adjusting the analysis size. The gap parameters can be calculated by the experimenter and directly input into the terminal as the modeling parameters (shielding case gap parameters) of the shielding case, or the terminal can obtain the shielding case gap parameters based on the resonant frequency and a preset calculation rule. Specifically, this application does not make a limitation.

[0097] In the implementation scheme of this application, the terminal performs electromagnetic field characteristic simulation on the simulation model to obtain initial electromagnetic radiation parameters, that is, input a preset simulation excitation into the simulation model and obtain the initial electromagnetic radiation parameters. The simulation excitation can be a high-frequency voltage or a high-frequency current. For example, in this implementation scheme, the preset standard parameter is a preset standard optimization value. By inputting a simulation excitation corresponding to the high-frequency circuit signal corresponding to obtaining the preset standard parameter into the simulation model for simulation, the correspondence between the simulation result and the preset standard optimization value is ensured, and further the accuracy of the data analysis of the simulation result is ensured. It can be understood that the high-frequency circuit signal can be a high-frequency voltage, a high-frequency current, etc., and the simulation excitation can be a high-frequency voltage or a high-frequency current corresponding to the high-frequency circuit signal. For example, if the high-frequency circuit signal can be a high-frequency voltage, the simulation excitation can be the corresponding high-frequency voltage or high-frequency current, which can be specifically set according to actual needs. Further, the preset standard parameter is obtained through a semi-anechoic chamber experiment on the physical object corresponding to the simulation model. The preset standard parameter is the optimization value required for electromagnetic radiation at the preset detection distance of the shielding cover corresponding to the theoretically calculated gap parameter, that is, the value that needs to be improved because the electromagnetic radiation at the predicted detection distance before the gap parameter of the simulation model is adjusted exceeds the standard, and it can be directly obtained through the semi-anechoic chamber.

[0098] See Figure 4 , Figure 4 is a schematic flowchart of an embodiment for obtaining target electromagnetic radiation parameters in the electromagnetic interference shielding cover gap design method provided in the embodiment of this application.

[0099] In the electromagnetic interference shielding cover gap design method in the embodiment of this application, the terminal obtains shielding cover data and data of the circuit to be shielded. Specifically, it includes steps 401 - step 403:

[0100] 401, Adjust the gap parameter of the three-dimensional physical model based on the initial electromagnetic radiation intensity at the gap.

[0101] The terminal obtains initial electromagnetic radiation parameters. The initial electromagnetic radiation parameters include the initial electromagnetic radiation intensity at the preset detection distance and the initial electromagnetic radiation intensity at the shielding cover gap. For example, the preset detection distance is 3 meters, that is, obtain the initial electromagnetic radiation intensity at 3 meters of the shielding cover and the initial electromagnetic radiation intensity at the shielding cover gap; by comparing the initial electromagnetic radiation intensity at each gap of the shielding cover and adjusting the gap size parameter corresponding to the gap where the initial electromagnetic radiation intensity is stronger in the three-dimensional physical model, reduce the gap size at that place.

[0102] 402, Convert the three-dimensional physical model with adjusted gap parameters into a simulation model to obtain an adjusted simulation model.

[0103] The terminal re - extracts the S - parameters of the three - dimensional physical model after adjusting the parameters to obtain the adjusted simulation model.

[0104] 403, input the simulation excitation corresponding to the high - frequency circuit signal of the preset standard parameters into the adjusted simulation model, and obtain the target electromagnetic radiation parameters. The target electromagnetic radiation parameters include the target electromagnetic radiation intensity at the gap after adjusting the gap parameters and the target electromagnetic radiation intensity at the preset detection distance.

[0105] Among them, if the preset standard parameter is the electromagnetic radiation standard, use the voltage or current corresponding to the highest resonance frequency of the circuit to be detected as the simulation excitation. If the preset standard parameter is the preset standard optimization value, the simulation excitation is the high - frequency circuit signal corresponding to obtaining the preset standard optimization value. It can be understood that the preset standard optimization value is obtained through the above - mentioned semi - anechoic chamber experiment. This high - frequency circuit signal is the current input or voltage input for obtaining the preset standard optimization value, and can be the voltage or current corresponding to the highest resonance frequency of the circuit to be detected.

[0106] See Figure 5 , Figure 5 is a schematic flowchart of an embodiment for obtaining the gap size information in the electromagnetic interference shielding cover gap design method provided in the embodiments of the present application.

[0107] In the electromagnetic interference shielding cover gap design method in the embodiments of the present application, the terminal obtains the gap size information according to the target electromagnetic radiation parameters and the preset standard parameters. Specifically, it includes steps 501 - step 503:

[0108] 501, calculate the optimization value of the initial electromagnetic radiation parameters relative to the target electromagnetic radiation parameters.

[0109] The terminal calculates the difference between the target electromagnetic radiation intensity at the preset detection distance and the initial electromagnetic radiation intensity at the preset detection distance as the optimization value of the target electromagnetic radiation parameters relative to the initial electromagnetic radiation parameters. It can be understood that the difference calculation here is a vector calculation, and the result obtained by calculation is processed by taking the absolute value to obtain the optimization value.

[0110] 502, if the optimization value matches the preset standard parameter, output the gap size information of the shielding cover according to the adjusted simulation model, and the preset standard parameter is the preset standard optimization value.

[0111] The terminal obtains the preset optimization value. If the optimization value is greater than or equal to the preset standard optimization value, it matches. Or take the difference between the optimization value and the preset standard optimization value as the error value. If the matching value is within the error range, it matches, and then output the gap size information of the shielding cover according to the adjusted simulation model.

[0112] 503. If the target electromagnetic radiation parameter does not match the preset standard parameter, adjust the simulation model, perform electromagnetic field characteristic simulation on the adjusted simulation model to obtain a new target electromagnetic radiation parameter, and continue this process until the new target electromagnetic radiation parameter matches the preset standard parameter. Then, output the gap size information of the shielding cover according to the adjusted simulation model.

[0113] The terminal obtains a preset optimization value. If the optimization value is less than the preset standard optimization value, it is considered not to match. Alternatively, use the difference obtained by subtracting the preset standard optimization value from the optimization value as the error value. If the matching value is outside the error range, it is considered not to match. If not, it means that the gap size of the shielding cover is still too large. Then, adjust the size of the shielding cover gap in the simulation model again and perform simulation to obtain a new target electromagnetic radiation parameter. It can be understood that the specific implementation for obtaining the new target electromagnetic radiation parameter includes: the terminal obtains the target electromagnetic radiation parameter, which includes the target electromagnetic radiation intensity at a preset detection distance and the target electromagnetic radiation intensity at the shielding cover gap. By comparing the target electromagnetic radiation intensity at each gap of the shielding cover and adjusting the gap size parameter corresponding to the gap with a stronger target electromagnetic radiation intensity in the three-dimensional physical model, reduce the gap size at that location. Then, convert the adjusted three-dimensional physical model into a three-dimensional simulation model. Continue this process until the new target electromagnetic radiation parameter matches the preset standard parameter. For the matching judgment, refer to step 502. Then, output the gap size information of the shielding cover according to the finally adjusted simulation model.

[0114] See Figure 6 , Figure 6 It is a schematic flowchart of an embodiment for verifying the obtained gap size information in the electromagnetic interference shielding cover gap design method provided in the embodiments of the present application.

[0115] After the terminal in the electromagnetic interference shielding cover gap design method of the embodiments of the present application outputs the gap size information of the shielding cover according to the adjusted simulation model if the target electromagnetic radiation parameter matches the preset standard parameter, the following steps 204 - 206 are further included:

[0116] 204. Obtain the electromagnetic frequency domain diagram before the adjustment of the shielding cover and the electromagnetic frequency domain diagram after the final adjustment.

[0117] 205. Perform data analysis and matching on the electromagnetic frequency domain diagram before the adjustment and the electromagnetic frequency domain diagram after the final adjustment.

[0118] 206. If they match, output that the gap size information of the shielding cover according to the adjusted simulation model is correct.

[0119] The terminal outputs the gap size information of the adjusted simulation model of the shielding cover. The experimenter makes a sample of the shielding cover according to the gap size information of the adjusted simulation model of the shielding cover, and conducts an experiment on the sampled shielding cover in a semi-anechoic chamber to obtain the finally adjusted electromagnetic frequency domain diagram. It can be understood that the generation environment of the adjusted electromagnetic frequency domain diagram is the same as that of the electromagnetic frequency domain diagram before adjustment. The electromagnetic frequency domain diagram is the electromagnetic radiation spectrum. The electromagnetic frequency domain diagram before the shielding cover is adjusted, that is, the electromagnetic frequency domain diagram obtained by the semi-anechoic chamber experiment of the shielding cover corresponding to the initially established three-dimensional physical model. The terminal obtains the electromagnetic frequency domain diagram before the shielding cover is adjusted and the finally adjusted electromagnetic frequency domain diagram by receiving through the receiving port or calling the program. The terminal conducts data analysis and matching on the obtained electromagnetic frequency domain diagram before adjustment and the finally adjusted electromagnetic frequency domain diagram for big data comparison analysis, that is, comparing the peak difference between the electromagnetic frequency domain diagram before adjustment and the finally adjusted electromagnetic frequency domain diagram. If the peak difference is within the preset error range, then the gap size information of the shielding cover output according to the adjusted simulation model is correct and meets the design requirements of electromagnetic shielding.

[0120] The present application provides a method for designing the gap of an electromagnetic interference shielding cover. By performing electromagnetic simulation on the shielding cover design simulation model and evaluating the results of the electromagnetic simulation based on preset standard parameters, the correction of the gap size of the shielding cover is realized, abandoning the technical solution of making samples and correcting them one by one in the prior art, reducing the sample-making time and sample-making cost, with stronger versatility and greatly reducing the design cost.

[0121] See Figure 7 , Figure 7 It is a schematic structural diagram of an embodiment of the electromagnetic interference shielding cover gap design device provided in the embodiment of the present application.

[0122] In order to better implement the method for designing the gap of the electromagnetic interference shielding cover in the embodiment of the present application, based on the method for designing the gap of the electromagnetic interference shielding cover, the embodiment of the present application also provides an electromagnetic interference shielding cover gap design device, and the electromagnetic interference shielding cover gap design device includes the following modules 601-module 603:

[0123] The first simulation module 601: used to create a simulation model corresponding to the shielding cover, perform electromagnetic field characteristic simulation on the simulation model, and obtain initial electromagnetic radiation parameters;

[0124] The second simulation module 602: used to adjust the simulation model according to the initial electromagnetic radiation parameters, perform electromagnetic field characteristic simulation on the adjusted simulation model, and obtain target electromagnetic radiation parameters;

[0125] Matching module 603: If the target electromagnetic radiation parameter matches the preset standard parameter, output the gap size information of the shielding cover according to the adjusted simulation model.

[0126] In some embodiments of the application, the first simulation module 601 includes means for:

[0127] Create a three-dimensional physical model including the shielding cover and the circuit structure to be shielded;

[0128] Convert the three-dimensional physical model into a simulation model;

[0129] Input a simulation excitation corresponding to the high-frequency circuit signal corresponding to the preset standard parameter into the simulation model, and obtain an initial electromagnetic radiation parameter, where the initial electromagnetic radiation parameter includes the initial electromagnetic radiation intensity at the gap of the shielding cover and the initial electromagnetic radiation intensity at a preset detection distance.

[0130] In some embodiments of the application, the second simulation module 602 includes means for:

[0131] Adjust the gap parameter of the three-dimensional physical model based on the initial electromagnetic radiation intensity at the gap;

[0132] Convert the three-dimensional physical model with the adjusted gap parameter into a simulation model to obtain an adjusted simulation model;

[0133] Input a simulation excitation corresponding to the high-frequency circuit signal corresponding to the preset standard parameter into the adjusted simulation model, and obtain a target electromagnetic radiation parameter, where the target electromagnetic radiation parameter includes the target electromagnetic radiation intensity at the gap after adjusting the gap parameter and the target electromagnetic radiation intensity at a preset detection distance.

[0134] In some embodiments of the application, the second simulation module 602 further includes means for:

[0135] Compare the initial electromagnetic radiation intensity at each gap, and adjust the gap size parameter corresponding to the gap with a stronger initial electromagnetic radiation intensity in the three-dimensional physical model.

[0136] In some embodiments of the application, the matching module 603 further includes means for:

[0137] Calculate the optimization value of the initial electromagnetic radiation parameter relative to the target electromagnetic radiation parameter;

[0138] If the optimization value matches the preset standard parameter, output the gap size information of the shielding cover according to the adjusted simulation model, where the preset standard parameter is a preset standard optimization value.

[0139] In some embodiments of the application, the matching module 603 further includes means for:

[0140] If the target electromagnetic radiation parameter does not match the preset standard parameter, adjust the simulation model, perform electromagnetic field characteristic simulation on the adjusted simulation model to obtain a new target electromagnetic radiation parameter until the new target electromagnetic radiation parameter matches the preset standard parameter;

[0141] Then output the gap size information of the shielding case according to the adjusted simulation model.

[0142] In some embodiments of the application, the device further includes a verification module for:

[0143] Obtain the electromagnetic frequency domain diagram before the adjustment of the shielding case and the electromagnetic frequency domain diagram after the final adjustment;

[0144] Perform data analysis and matching on the electromagnetic frequency domain diagram before the adjustment and the electromagnetic frequency domain diagram after the final adjustment;

[0145] If they match, output that the gap size information of the shielding case is correct according to the adjusted simulation model.

[0146] The embodiment of the present application provides an electromagnetic interference shielding case gap design device, which realizes the correction of the gap size of the shielding case by performing electromagnetic simulation on the shielding case design simulation model and evaluating the results of the electromagnetic simulation based on the preset standard parameters, abandons the technical solution of making samples and correcting them one by one in the prior art, reduces the sample making time and sample making cost, has stronger versatility and greatly reduces the design cost.

[0147] The embodiment of the present invention also provides an electromagnetic interference shielding case gap design device; as Figure 8 shown, Figure 8 is a schematic structural diagram of an embodiment of the electromagnetic interference shielding case gap design device provided in the embodiment of the present application.

[0148] The electromagnetic interference shielding case gap design device integrates any one of the electromagnetic interference shielding case gap design devices provided in the embodiments of the present invention, and is provided in the electromagnetic interference shielding case gap design device:

[0149] One or more processors;

[0150] A memory; and

[0151] One or more applications, wherein the one or more applications are stored in the memory and are configured to be executed by the processor to perform the steps in the electromagnetic interference shielding case gap design method in any one of the embodiments of the above control method of the massager motor.

[0152] Specifically: The electromagnetic interference shielding cover gap design device may include components such as a processor 1001 with one or more processing cores, a memory 1002 with one or more computer storage media, a power supply 1003, and an input unit 1004. Those skilled in the art can understand that Figure 8 the structure of the electromagnetic interference shielding cover gap design device shown in

[0153] does not constitute a limitation on the electromagnetic interference shielding cover gap design device. It may include more or fewer components than shown, or combine certain components, or have different component arrangements. Among them:

[0154] The processor 1001 is the control center of the electromagnetic interference shielding cover gap design device. It connects various parts of the entire electromagnetic interference shielding cover gap design device through various interfaces and lines. By running or executing software programs and / or modules stored in the memory 1002, and by calling data stored in the memory 1002, it performs various functions of the electromagnetic interference shielding cover gap design device and processes data. Optionally, the processor 1001 may include one or more processing cores; preferably, the processor 1001 may integrate an application processor and a modem processor. Among them, the application processor mainly processes the operating system, user interface, application programs, etc., and the modem processor mainly processes wireless communication. It can be understood that the above-mentioned modem processor may not be integrated into the processor 1001.

[0155] The electromagnetic interference shielding cover gap design device also includes a power supply 1003 that powers each component. Preferably, the power supply 1003 can be logically connected to the processor 1001 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. The power supply 1003 may also include any components such as one or more DC or AC power supplies, a recharge system, a power failure detection circuit, a power converter or inverter, and a power status indicator.

[0156] The electromagnetic interference shielding cover gap design device may further include an input unit 1004, which can be used to receive input digital or character information, and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function controls.

[0157] Although not shown, the electromagnetic interference shielding cover gap design device may further include a display unit, etc., which will not be elaborated here. Specifically, in this embodiment, the processor 1001 in the electromagnetic interference shielding cover gap design device will, according to the following instructions, load the executable files corresponding to the processes of one or more application programs into the memory 1002, and the processor 1001 will run the application programs stored in the memory 1002 to implement various functions as follows:

[0158] Create a simulation model corresponding to the shielding cover, perform electromagnetic field characteristic simulation on the simulation model, and obtain initial electromagnetic radiation parameters;

[0159] Adjust the simulation model according to the initial electromagnetic radiation parameters, perform electromagnetic field characteristic simulation on the adjusted simulation model, and obtain target electromagnetic radiation parameters;

[0160] If the target electromagnetic radiation parameters match the preset standard parameters, output the gap size information of the shielding cover according to the adjusted simulation model.

[0161] Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructions, or by controlling relevant hardware through instructions. These instructions can be stored in a computer storage medium and loaded and executed by a processor.

[0162] Therefore, an embodiment of the present invention provides a computer storage medium, which may include: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc. A computer program is stored thereon, and the computer program is loaded by a processor to execute the steps in any of the electromagnetic interference shielding cover gap design methods provided by the embodiments of the present invention. For example, when the computer program is loaded by a processor, it can execute the following steps:

[0163] Create a simulation model corresponding to the shielding cover, perform electromagnetic field characteristic simulation on the simulation model, and obtain initial electromagnetic radiation parameters;

[0164] Adjust the simulation model according to the initial electromagnetic radiation parameters, perform electromagnetic field characteristic simulation on the adjusted simulation model, and obtain target electromagnetic radiation parameters;

[0165] If the target electromagnetic radiation parameter matches the preset standard parameter, the gap size information of the shielding case is output according to the adjusted simulation model.

[0166] In the above embodiments, the descriptions of the various embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference may be made to the detailed descriptions of other embodiments above, and details will not be repeated here.

[0167] In specific implementation, the above units or structures can be implemented as independent entities, or can be combined arbitrarily to be implemented as the same or several entities. For the specific implementation of the above units or structures, reference may be made to the method embodiments above, and details will not be repeated here.

[0168] For the specific implementation of the above operations, reference may be made to the previous embodiments, and details will not be repeated here.

[0169] The above has introduced in detail a method, device, equipment and storage medium for designing the gap of an electromagnetic interference shielding case provided by the embodiments of the present application. Specific examples are used in this article to elaborate on the principles and implementation manners of the present invention. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present invention; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A method for designing the gap of an electromagnetic interference shielding cover, characterized in that, Including: Create a simulation model corresponding to the shielding cover, perform electromagnetic field characteristic simulation on the simulation model, and obtain initial electromagnetic radiation parameters; Adjust the simulation model according to the initial electromagnetic radiation parameters, perform electromagnetic field characteristic simulation on the adjusted simulation model, and obtain target electromagnetic radiation parameters; If the target electromagnetic radiation parameters match the preset standard parameters, output the gap size information of the shielding cover according to the adjusted simulation model; The adjusting the simulation model according to the initial electromagnetic radiation parameters, performing electromagnetic field characteristic simulation on the adjusted simulation model, and obtaining target electromagnetic radiation parameters includes: Adjust the gap parameters of the three-dimensional physical model based on the initial electromagnetic radiation intensity at the gap; Convert the three-dimensional physical model with adjusted gap parameters into a simulation model to obtain the adjusted simulation model; Input the simulation excitation corresponding to the circuit high-frequency signal corresponding to the preset standard parameters into the adjusted simulation model, and obtain the target electromagnetic radiation parameters, where the target electromagnetic radiation parameters include the target electromagnetic radiation intensity at the gap after adjusting the gap parameters and the target electromagnetic radiation intensity at the preset detection distance.

2. The electromagnetic interference shielding cover gap design method according to claim 1, characterized in that The if the target electromagnetic radiation parameters match the preset standard parameters, outputting the gap size information of the shielding cover according to the adjusted simulation model includes: Calculate the optimization value of the initial electromagnetic radiation parameters relative to the target electromagnetic radiation parameters; If the optimization value matches the preset standard parameters, output the gap size information of the shielding cover according to the adjusted simulation model, where the preset standard parameters are preset standard optimization values.

3. The electromagnetic interference shielding cover gap design method according to claim 2, characterized in that The creating a simulation model corresponding to the shielding cover, performing electromagnetic field characteristic simulation on the simulation model, and obtaining initial electromagnetic radiation parameters includes: Create a three-dimensional physical model including the shielding cover and the circuit structure to be shielded; Convert the three-dimensional physical model into a simulation model; Input the simulation excitation corresponding to the circuit high-frequency signal corresponding to the preset standard parameters into the simulation model, and obtain the initial electromagnetic radiation parameters, where the initial electromagnetic radiation parameters include the initial electromagnetic radiation intensity at the gap of the shielding cover and the initial electromagnetic radiation intensity at the preset detection distance.

4. The electromagnetic interference shielding cover gap design method according to claim 1, characterized in that The adjusting the gap parameters of the three-dimensional physical model based on the initial electromagnetic radiation intensity at the gap includes: Compare the initial electromagnetic radiation intensity at each gap, and adjust the corresponding gap size parameters at the gap with stronger initial electromagnetic radiation intensity in the three-dimensional physical model.

5. The electromagnetic interference shielding cover gap design method according to claim 1, characterized in that After the adjusting the simulation model according to the initial electromagnetic radiation parameters, performing electromagnetic field characteristic simulation on the adjusted simulation model, and obtaining target electromagnetic radiation parameters, it further includes: If the target electromagnetic radiation parameters do not match the preset standard parameters, adjust the simulation model, perform electromagnetic field characteristic simulation on the adjusted simulation model, and obtain new target electromagnetic radiation parameters until the new target electromagnetic radiation parameters match the preset standard parameters; Then output the gap size information of the shielding cover according to the adjusted simulation model.

6. The electromagnetic interference shielding cover gap design method according to claim 1, wherein The if the target electromagnetic radiation parameters match the preset standard parameters, outputting the gap size information of the shielding cover according to the adjusted simulation model includes: Compare the electromagnetic intensity optimization value of the target electromagnetic radiation intensity at the preset detection distance relative to the initial electromagnetic radiation intensity at the preset detection distance; Match the optimization value with a preset standard optimization value; If the optimization value is greater than or equal to the preset standard optimization value and a match is made, output the gap size information of the shielding cover according to the adjusted simulation model.

7. The electromagnetic interference shielding cover gap design method according to claim 1, characterized in that After outputting the gap size information of the shielding cover according to the adjusted simulation model if the target electromagnetic radiation parameter matches the preset standard parameter, it further includes: Obtain the electromagnetic frequency domain diagram before adjustment and the electromagnetic frequency domain diagram after final adjustment of the shielding cover; Perform data analysis and matching on the electromagnetic frequency domain diagram before adjustment and the electromagnetic frequency domain diagram after final adjustment; If they match, output that the gap size information of the shielding cover according to the adjusted simulation model is correct.

8. An electromagnetic interference shielding cover gap design device, characterized in that, The device includes: A first simulation module: used to create a simulation model corresponding to the shielding cover, perform electromagnetic field characteristic simulation on the simulation model, and obtain initial electromagnetic radiation parameters; A second simulation module: used to adjust the simulation model according to the initial electromagnetic radiation parameters, perform electromagnetic field characteristic simulation on the adjusted simulation model, and obtain target electromagnetic radiation parameters; A matching module: used to output the gap size information of the shielding cover according to the adjusted simulation model if the target electromagnetic radiation parameter matches the preset standard parameter; The second simulation module is used for: Adjust the gap parameters of the three-dimensional physical model based on the initial electromagnetic radiation intensity at the gap; Convert the three-dimensional physical model with adjusted gap parameters into a simulation model to obtain an adjusted simulation model; Input a simulation excitation corresponding to the circuit high-frequency signal corresponding to the preset standard parameter into the adjusted simulation model, and obtain target electromagnetic radiation parameters, where the target electromagnetic radiation parameters include the target electromagnetic radiation intensity at the gap after adjusting the gap parameters and the target electromagnetic radiation intensity at the preset detection distance.

9. An electromagnetic interference shielding cover gap design device, characterized in that The device includes: One or more processors; A memory; and One or more applications, where the one or more applications are stored in the memory and configured to be executed by the processor to implement the electromagnetic interference shielding cover gap design method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, A computer program is stored thereon, and the computer program is loaded by the processor to execute the steps in the electromagnetic interference shielding cover gap design method according to any one of claims 1 to 7.

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