Simulation analysis method, device and equipment for whole vehicle antenna and storage medium

Abstract

The invention relates to the technical field of antennas, and discloses a simulation analysis method, device and equipment for a whole vehicle antenna and a storage medium, and the method comprises the steps: building a vehicle body model of a vehicle and an antenna model of a vehicle-mounted antenna; importing the vehicle body model and the antenna model into simulation software, and setting simulation parameters of the simulation software; based on a bounce ray algorithm solver and a finite element algorithm solver in simulation software, carrying out simulation analysis on the antenna model and the vehicle body model by adopting an equivalent source technology to obtain a simulation result and exporting the simulation result; and under the condition that the simulation result is consistent with the actual test result, taking the simulation result as a simulation analysis result of the vehicle-mounted antenna. According to the method, the antenna is replaced with the result obtained by solving the antenna through the finite element algorithm solver, further solving is conducted on the vehicle body model, the simulation result is obtained, and compared with simulation analysis conducted through a single algorithm, calculation resources are saved, analysis time is shortened on the basis that the precision of the simulation result is guaranteed, and therefore calculation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of antenna technology, and in particular to a simulation analysis method, device, equipment and storage medium for a whole vehicle antenna. Background Art

[0002] Electromagnetic simulation analysis of vehicle antennas is a key step in the development of electric vehicles. It aims to evaluate and optimize the electromagnetic field distribution and working performance of antennas integrated in vehicles. Vehicle antenna simulation analysis is an electrically multi-scale problem, that is, the size of the vehicle body is large compared to the antenna wavelength or the physical size of the antenna. In electromagnetic simulation, it often consumes a lot of computing resources and takes a long time to analyze. Therefore, how to simulate and analyze antennas with electrically multi-scale problems is a problem that needs to be solved.

[0003] At present, the simulation analysis of vehicle-mounted antennas relies on a variety of professional simulation software, such as HFSS (High Frequency Structure Simulator), FEKO (Finite Element Method and Method of Moments for Electromagnetic Field Analysis), and CST (Computer Simulation Technology). These simulation software are based on finite element algorithm, moment algorithm, finite difference time domain algorithm and other algorithms to adapt to various complex simulation scenarios. Taking the HFSS simulation software as an example, the vehicle body model and antenna model are simultaneously imported into HFSS, and the precise full-wave algorithm solver is used to solve the problem to obtain the antenna simulation analysis results. However, only using a single precise full-wave algorithm solver for solving the problem has a high computational cost, requires huge computing resources and time for large-scale electrical problems, and has low computational efficiency. Summary of the invention

[0004] In view of this, the present invention provides a simulation and analysis method, device, equipment and storage medium for a whole vehicle antenna to solve the problem that when there are electrical multi-scale problems in the simulation and analysis of the vehicle-mounted antenna, a large amount of computing resources are consumed in the electromagnetic simulation, the analysis time is long, and the computing efficiency is low.

[0005] In a first aspect, the present invention provides a simulation analysis method for a vehicle antenna, the method comprising:

[0006] Establish a vehicle body model and an antenna model of the vehicle-mounted antenna;

[0007] Import the vehicle body model and antenna model into the simulation software, and set the simulation parameters of the simulation software;

[0008] Based on the bouncing ray algorithm solver and finite element algorithm solver in the simulation software, the equivalent source technology is used to simulate and analyze the antenna model and the vehicle body model, obtain the simulation results and export them;

[0009] When the simulation result is consistent with the actual test result, the simulation result is used as the simulation analysis result of the vehicle-mounted antenna, and the actual test result represents the data obtained by performing a performance test on the vehicle-mounted antenna in an actual physical environment.

[0010] The simulation and analysis method of the whole vehicle antenna provided by the embodiment of the present invention constructs a vehicle body model and a vehicle-mounted antenna model, imports the vehicle body model and the antenna model into the selected simulation software, configures simulation parameters for subsequent simulation analysis, and combines a bouncing ray algorithm solver and a finite element algorithm solver in the simulation software to replace the vehicle-mounted antenna with the result of the finite element algorithm solver solving the vehicle-mounted antenna, and further solves the vehicle body model to obtain a simulation result, and compares the simulation result with the actual test result. If the two are consistent, it indicates that the simulation analysis is accurate and reliable, and the simulation result can be used as a basis for design optimization and performance prediction of the vehicle-mounted antenna. Compared with the related art that only uses a single algorithm for simulation analysis, while ensuring the accuracy of the simulation analysis results, it saves computing resources, shortens the analysis time, and thus improves computing efficiency.

[0011] In an optional embodiment, the method further includes:

[0012] When the simulation results are inconsistent with the actual test results, adjust the simulation parameters of the simulation software, return to the bouncing ray algorithm solver and finite element algorithm solver in the simulation software, perform simulation analysis on the antenna model and the vehicle body model, obtain the simulation results and export them.

[0013] The simulation analysis method for the whole vehicle antenna provided in an embodiment of the present invention compares the simulation result with the actual test result. If the two are inconsistent, it indicates that the accuracy of the simulation analysis result is not reliable enough. Therefore, it is necessary to adjust the simulation parameters of the simulation software accordingly based on the difference between the two to ensure the accuracy of the simulation result.

[0014] In an optional implementation, establishing a vehicle body model and an antenna model of a vehicle-mounted antenna includes:

[0015] Obtain key dimensions of the vehicle body and three-dimensional structural dimensions of the vehicle-mounted antenna;

[0016] Computer-aided design software is used to perform hierarchical modeling based on the three-dimensional structure size of the vehicle-mounted antenna to obtain an initial antenna model;

[0017] Using computer-aided design software, modeling is performed based on the key dimensions of the vehicle body to obtain an initial vehicle body model;

[0018] The initial vehicle body model and the initial antenna model are saved in a file format compatible with the simulation software to obtain the vehicle body model and the antenna model.

[0019] The simulation and analysis method for the whole vehicle antenna provided in the embodiment of the present invention obtains the key dimension data of the vehicle body and the detailed three-dimensional structural dimensions of the vehicle-mounted antenna, uses computer-aided design software to perform modeling, and converts it into a three-dimensional solid model. After the modeling is completed, the antenna model and the vehicle body model are respectively saved as file formats that are universal or compatible with the selected simulation software, ensuring that the model can be smoothly imported and recognized in the simulation software.

[0020] In an optional implementation, before importing the antenna model into the simulation software, the method further includes:

[0021] Based on the initial antenna model, set up the import information file.

[0022] The simulation and analysis method for the whole vehicle antenna provided by the embodiment of the present invention saves the detailed information of each layer in the initial antenna model by setting an import information file based on the initial antenna model, which serves as a bridge for importing the antenna model into the simulation software, thereby ensuring that the antenna model can be smoothly imported and identified in the simulation software.

[0023] In an optional implementation, based on the bouncing ray algorithm solver and the finite element algorithm solver in the simulation software, the equivalent source technology is used to simulate and analyze the antenna model and the vehicle body model, obtain the simulation results and export them, including:

[0024] Create a new 3D far-field observation plane;

[0025] In the three-dimensional far-field observation plane, the antenna model is solved based on the finite element algorithm solver to obtain the initial far-field directivity file;

[0026] Set the export parameters to export the target far-field directivity file from the initial far-field directivity file;

[0027] Based on the bouncing ray algorithm solver, the target far-field directivity file is used as the equivalent source to solve the vehicle model, obtain the simulation results and export them.

[0028] The simulation and analysis method for the whole vehicle antenna provided by the embodiment of the present invention imports the vehicle model and the antenna model into the selected simulation software, creates a new three-dimensional far-field observation plane in the simulation environment to collect the data of the far-field directivity of the antenna, solves the antenna model based on the finite element algorithm solver, generates an initial far-field directivity file, exports the target far-field directivity file after setting the export parameters, and then applies the target far-field directivity file as an equivalent source to the vehicle model based on the bouncing ray algorithm solver, simulates the real working environment of the antenna around the vehicle body, considers the influence of the vehicle body structure on the antenna radiation pattern, and obtains the final simulation result after considering the influence of the vehicle body. On the basis of ensuring the accuracy of the simulation analysis results, it saves computing resources, shortens the analysis time, and thus improves the computing efficiency.

[0029] In an optional embodiment, the method further includes:

[0030] Based on the simulation analysis results of the vehicle-mounted antenna, the working performance of the vehicle-mounted antenna is analyzed.

[0031] The simulation analysis method for the whole vehicle antenna provided by the embodiment of the present invention realizes accurate analysis of the working performance of the vehicle antenna based on the simulation analysis result of the vehicle antenna.

[0032] In a second aspect, the present invention provides a simulation analysis device for a vehicle antenna, the device comprising:

[0033] A modeling module, used to establish a vehicle body model and an antenna model of a vehicle-mounted antenna;

[0034] A setting module, used to import the vehicle body model and the antenna model into the simulation software and set the simulation parameters of the simulation software;

[0035] The simulation module is used to simulate and analyze the antenna model and the vehicle body model based on the bouncing ray algorithm solver and the finite element algorithm solver in the simulation software, using the equivalent source technology, and obtain and export the simulation results;

[0036] The determination module is used to use the simulation result as the simulation analysis result of the vehicle-mounted antenna when the simulation result is consistent with the actual test result, and the actual test result represents the data obtained by performing a performance test on the vehicle-mounted antenna in an actual physical environment.

[0037] In a third aspect, the present invention provides a computer device, comprising: a memory and a processor, the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the simulation and analysis method of the whole vehicle antenna of the above-mentioned first aspect or any corresponding embodiment thereof by executing the computer instructions.

[0038] In a fourth aspect, the present invention provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the simulation and analysis method for a vehicle antenna according to the first aspect or any corresponding embodiment thereof.

[0039] In a fifth aspect, the present invention provides a computer program product, including computer instructions, and the computer instructions are used to enable a computer to execute the simulation analysis method of the vehicle antenna according to the first aspect or any corresponding embodiment thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 is a flow chart of a simulation analysis method for a vehicle antenna according to an embodiment of the present invention;

[0042] Figure 2 is a flow chart of another simulation analysis method for a vehicle antenna according to an embodiment of the present invention;

[0043] Figure 3 is a structural block diagram of a simulation and analysis device for a vehicle antenna according to an embodiment of the present invention;

[0044] Figure 4 It is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0046] Since the simulation analysis of vehicle-mounted antennas belongs to electrical multi-scale problems, electromagnetic simulation often encounters the problem of consuming a large amount of computing resources and long analysis time. Therefore, how to simulate and analyze antennas with electrical multi-scale problems is a problem that needs to be solved. Taking the use of HFSS simulation software as an example, the vehicle body model and the antenna model are simultaneously imported into HFSS, and the accurate full-wave algorithm solver is used to solve the problem to obtain the antenna simulation analysis results. However, only using a single accurate full-wave algorithm solver for solving the problem has high computational cost, requires huge computing resources and time for electrical multi-scale problems, and has low computational efficiency. The simulation analysis method for the whole vehicle antenna provided in an embodiment of the present invention, through the combination of the bouncing ray algorithm and the finite element algorithm, replaces the vehicle-mounted antenna with the result of the finite element algorithm solver solving the vehicle-mounted antenna, and further solves it with the vehicle body model. On the basis of ensuring the accuracy of the simulation analysis results, computing resources are saved, the analysis time is shortened, and the computational efficiency is improved.

[0047] According to an embodiment of the present invention, an embodiment of a simulation analysis method for a whole vehicle antenna is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0048] In this embodiment, a simulation analysis method for a vehicle antenna is provided, which can be used for electronic equipment. Figure 1 FIG. 1 is a flow chart of a simulation analysis method for a vehicle antenna according to an embodiment of the present invention. Figure 1 As shown, the process includes the following steps:

[0049] Step S101, establish a body model of the vehicle and an antenna model of the vehicle-mounted antenna. Specifically, use computer-aided design software in electronic equipment, such as SolidWorks, AutoCAD, CATIA, etc., to create a three-dimensional model based on the actual size and structural characteristics of the vehicle, and also build a three-dimensional model of the vehicle-mounted antenna based on the actual size and structural characteristics of the vehicle-mounted antenna, to ensure that the two models accurately reflect the design details of the vehicle and the vehicle-mounted antenna, so as to facilitate subsequent simulation analysis.

[0050] Step S102, import the vehicle body model and antenna model into the simulation software, and set the simulation parameters of the simulation software. Specifically, convert the vehicle body model and antenna model files into a format supported by the simulation software, such as .DXF and .DWG, and import them into the simulation software of the electronic device. Among them, the simulation software can be HFSS, FEKO or CST, etc., and the embodiment of the present invention is described by taking HFSS as an example. In the HFSS software, set the parameters of the simulation scene, including boundary conditions, material properties, background environment, network ports, and required analysis types, etc. Among them, the analysis types include S parameters, far-field radiation patterns, etc. By setting the simulation parameters of the simulation software, the simulation analysis is carried out in a simulation environment that conforms to the actual situation, thereby improving the accuracy of the simulation analysis.

[0051] Step S103, based on the bouncing ray algorithm solver and the finite element algorithm solver in the simulation software, the equivalent source technology is used to simulate and analyze the antenna model and the vehicle body model, and the simulation results are obtained and exported. Specifically, the finite element method (Finite Element Method, FEM) is used to accurately analyze the electromagnetic field distribution inside the antenna structure, and can accurately reflect the radiation characteristics and absorption loss of the antenna. The shooting and bouncing rays algorithm (SBR) is used to deal with electromagnetic wave propagation problems in complex environments. It can simulate how the electromagnetic waves radiated by the antenna are reflected and refracted in the vehicle body and other surrounding environments to evaluate the performance of the antenna under actual installation conditions. By combining the bouncing ray algorithm solver and the finite element algorithm solver, the result of the finite element algorithm solver on the vehicle-mounted antenna is replaced by the vehicle-mounted antenna, and further solved with the vehicle body model. Compared with using a single algorithm for solving, while ensuring the accuracy of the simulation analysis results, it saves computing resources, shortens the analysis time, and thus improves the computing efficiency.

[0052] Step S104, when the simulation result is consistent with the actual test result, the simulation result is used as the simulation analysis result of the vehicle-mounted antenna, and the actual test result represents the data obtained by performing a performance test on the vehicle-mounted antenna in an actual physical environment. Specifically, the vehicle-mounted antenna is tested for performance in an actual scenario to obtain performance data such as radiation pattern and gain. The simulation result is compared and analyzed with the actual test result to determine whether the two are consistent within the allowable error range. If they are consistent, it means that the simulation result is accurate and reliable, and the simulation result can be used as a basis for design optimization and performance prediction of the vehicle-mounted antenna.

[0053] The simulation and analysis method of the whole vehicle antenna provided by the embodiment of the present invention constructs a vehicle body model and a vehicle-mounted antenna model, imports the vehicle body model and the antenna model into the selected simulation software, configures simulation parameters for subsequent simulation analysis, and combines a bouncing ray algorithm solver and a finite element algorithm solver in the simulation software to replace the vehicle-mounted antenna with the result of the finite element algorithm solver solving the vehicle-mounted antenna, and further solves the vehicle body model to obtain a simulation result, and compares the simulation result with the actual test result. If the two are consistent, it indicates that the simulation analysis is accurate and reliable, and the simulation result can be used as a basis for design optimization and performance prediction of the vehicle-mounted antenna. Compared with the related art that only uses a single algorithm for simulation analysis, while ensuring the accuracy of the simulation analysis results, it saves computing resources, shortens the analysis time, and thus improves computing efficiency.

[0054] In this embodiment, a simulation analysis method for a vehicle antenna is provided, which can be used for the above-mentioned electronic equipment. Figure 2 FIG. 1 is a flow chart of another simulation analysis method for a vehicle antenna according to an embodiment of the present invention. Figure 2 As shown, the process includes the following steps:

[0055] Step S201, establishing a vehicle body model and an antenna model of a vehicle-mounted antenna.

[0056] Specifically, the above step S201 includes:

[0057] Step S2011, obtain the key dimensions of the vehicle body and the three-dimensional structural dimensions of the vehicle-mounted antenna. Specifically, obtain the key dimensions of the vehicle body, such as length, width, height, and body contour. At the same time, obtain the specific three-dimensional structural dimensions of the vehicle-mounted antenna, such as the length, diameter, bending shape and other geometric parameters of the antenna, to provide basic data for subsequent modeling.

[0058] Step S2012, using computer-aided design software, hierarchical modeling is performed based on the three-dimensional structure size of the vehicle-mounted antenna to obtain an initial antenna model. Specifically, when drawing the model of the vehicle-mounted antenna, different layers are established to draw the corresponding structure to ensure that the model structure is not distorted. Therefore, the structures of different layers such as the PCB substrate and metal wires of the antenna can be drawn in layers or files to obtain the initial antenna model.

[0059] Step S2013, using computer-aided design software, modeling is performed based on the key dimensions of the vehicle body to obtain an initial vehicle body model. Specifically, based on the data of the key dimensions of the vehicle body, an overall three-dimensional model of the vehicle body is constructed.

[0060] Step S2014, save the initial vehicle body model and the initial antenna model in a file format compatible with the simulation software to obtain the vehicle body model and the antenna model. Specifically, after the modeling is completed, the vehicle body model and the antenna model are saved in a file format that can be directly read by the simulation software, such as the minimum version of the .dxf format or the .dwg format, so as to have better compatibility and reduce problems that may occur during the model import process.

[0061] Step S202: import the vehicle body model and the antenna model into the simulation software, and set the simulation parameters of the simulation software.

[0062] In some optional implementations, before the above step S202 of importing the vehicle body model and the antenna model into the simulation software, the method further includes:

[0063] Step a1, based on the initial antenna model, set the import information file. Specifically, since the initial antenna model is layered modeling, the detailed information of each layer in the initial antenna model is formed into an import information file as a bridge for importing the antenna model into the simulation software. When importing, first import the import information file, and then import the antenna model to ensure that the antenna model can be smoothly imported and recognized in the simulation software. Among them, the format of the import information file is .tech, including the name, color, position, thickness and other information of each layer along the Z-axis direction in the initial antenna model.

[0064] Step S203, based on the bouncing ray algorithm solver and the finite element algorithm solver in the simulation software, using the equivalent source technology, simulate and analyze the antenna model and the vehicle body model, obtain the simulation results and export them.

[0065] Specifically, the above step S203 includes:

[0066] Step S2031, create a new three-dimensional far-field observation plane. Specifically, in HFSS, create a new three-dimensional far-field observation plane, set a virtual observation space for subsequent analysis of antenna radiation characteristics, and then start the subsequent simulation program.

[0067] Step S2032, in the three-dimensional far-field observation plane, the antenna model is solved based on the finite element algorithm solver to obtain the initial far-field directivity file. Specifically, the antenna model is solved using the finite element algorithm solver, and the antenna model is first divided into many small non-overlapping volume or surface units, that is, meshing is performed. Then, the boundary conditions of the antenna model are defined, such as open space assumptions or specific electromagnetic boundaries. At the same time, an excitation source, such as port excitation or current distribution, is specified for the antenna model to simulate how the antenna is driven to emit electromagnetic waves. Then, FEM is applied to convert the Maxwell equations into algebraic equations for solution, and HFSS will calculate the electromagnetic field distribution at each grid point, including electric field, magnetic field intensity, etc. After the solution is completed, the near-field data of the antenna, including the electric field and magnetic field distribution, is obtained through post-processing analysis. Using the far-field transformation formula, these near-field data are converted into far-field data, that is, the radiation pattern and field strength distribution at a certain distance away from the antenna. Finally, HFSS generates an initial far-field directivity file based on the far-field data, intuitively showing the radiation characteristics of the antenna in different directions.

[0068] Step S2033, setting export parameters, and exporting the target far-field directivity file from the initial far-field directivity file. Specifically, setting export frequency points, design variables and other parameters in HFSS, and exporting the target far-field directivity file.

[0069] Step S2034, based on the bouncing ray algorithm solver, the target far-field directivity file is used as an equivalent source to solve the vehicle model, obtain the simulation results and export them. Specifically, the vehicle model and antenna model are directly used to solve in the related art, which consumes a lot of computing resources and takes a long time. The embodiment of the present invention uses FEM to simulate the small-scale electromagnetic components, that is, the vehicle-mounted antenna in detail, accurately captures the electromagnetic characteristics of the antenna, and expresses it in the form of a far-field directivity diagram. Using the equivalent source technology, an equivalent source is created based on the target far-field directivity file obtained by FEM simulation. The equivalent source does not contain all the physical details of the vehicle-mounted antenna, but represents the radiation characteristics of the vehicle-mounted antenna through mathematical expressions or parameterized models, and can quickly and effectively simulate the electromagnetic field distribution of the vehicle-mounted antenna in large-scale simulation. The above-extracted equivalent source, that is, the target far-field directivity file, is placed in the SBR solver applied to the large-scale environment for simulation. First, the target far-field directivity file is placed in the corresponding position in the vehicle model in the SBR solver, that is, the actual installation position of the antenna. This equivalent source now acts as an emission source for electromagnetic waves, replacing the complex antenna model. Then, define the parameters required for the simulation, such as the frequency range, propagation characteristics of electromagnetic waves, size of the solution domain, and resolution, to ensure the accuracy and efficiency of the simulation results. The SBR solver then simulates the propagation of electromagnetic waves in the vehicle and the surrounding environment by emitting a large number of virtual rays. These rays will be reflected, refracted, or absorbed when they hit surfaces of different materials. By tracking the path and energy changes of the rays, their distribution in space is calculated. With the ejection and eventual reception of a large number of rays, the SBR solver accumulates this ray information to evaluate the electromagnetic compatibility of the vehicle and the radiation characteristics of the antenna. After the simulation, the SBR solver will provide detailed simulation results, including radiation patterns, received signal strength distribution diagrams, gain, and other antenna performance data. Since the equivalent source greatly reduces the amount of calculation compared to the antenna model, the SBR solver can efficiently calculate its electromagnetic propagation behavior in a wide space or complex environment, so that the electromagnetic compatibility and radiation characteristics of the entire vehicle can be quickly evaluated while considering the influence of the simplified antenna model. On the basis of ensuring the accuracy of the simulation results, it saves computing resources, shortens the analysis time, and thus improves the computing efficiency.

[0070] Step S204: If the simulation result is consistent with the actual test result, the simulation result is used as the simulation analysis result of the vehicle-mounted antenna. The actual test result refers to the data obtained by performing a performance test on the vehicle-mounted antenna in an actual physical environment. Figure 1 Step S104 of the illustrated embodiment will not be described in detail here.

[0071] Step S205, when the simulation result is inconsistent with the actual test result, the simulation parameters of the simulation software are adjusted, and the simulation results are obtained and exported by simulating and analyzing the antenna model and the vehicle body model based on the bouncing ray algorithm solver and the finite element algorithm solver in the simulation software. Specifically, if the difference between the simulation result and the actual test result exceeds the allowable error range, that is, the two are inconsistent, it is necessary to adjust the simulation parameters such as frequency band, material parameters, etc. according to the difference between the two, and return to step S203 to re-simulate and analyze until the simulation result is consistent with the actual test result to ensure the accuracy of the simulation result.

[0072] Step S206: Analyze the working performance of the vehicle-mounted antenna based on the simulation analysis results of the vehicle-mounted antenna. Specifically, based on the simulation analysis results, deeply analyze the working performance of the vehicle-mounted antenna, including directivity, gain, etc., to provide a scientific basis for the optimization design and performance improvement of the antenna, and realize accurate analysis of the working performance of the vehicle-mounted antenna.

[0073] In some optional embodiments, it is assumed that a monopole antenna with an operating frequency of 3 GHz is placed on a metal plane of a vehicle with a radius of 200 mm. The antenna has two placement directions: the antenna is placed vertically on the metal plane and the antenna is placed horizontally on the metal plane. Table 1 shows the time consumption for simulating the antenna directly based on FEM and simulating using the simulation analysis method for the whole vehicle antenna proposed in an embodiment of the present invention to obtain the simulation results. As can be seen from Table 1, for the analysis problem of the whole vehicle antenna of multiple electrical scales, the simulation analysis method for the whole vehicle antenna proposed in an embodiment of the present invention can effectively speed up the simulation analysis speed, save time, and have high computational efficiency.

[0074] Table 1 Time consumption of two simulation analysis methods

[0075]

[0076] The simulation and analysis method of the whole vehicle antenna provided by the embodiment of the present invention constructs a vehicle body model and a vehicle-mounted antenna model, imports the vehicle body model and the antenna model into the selected simulation software, configures simulation parameters for subsequent simulation analysis, and combines a bouncing ray algorithm solver and a finite element algorithm solver in the simulation software to replace the vehicle-mounted antenna with the result of the finite element algorithm solver solving the vehicle-mounted antenna, and further solves the vehicle body model to obtain a simulation result, and compares the simulation result with the actual test result. If the two are consistent, it indicates that the simulation analysis is accurate and reliable, and the simulation result can be used as a basis for design optimization and performance prediction of the vehicle-mounted antenna. Compared with the related art that only uses a single algorithm for simulation analysis, while ensuring the accuracy of the simulation analysis results, it saves computing resources, shortens the analysis time, and thus improves computing efficiency.

[0077] In this embodiment, a simulation and analysis device for a vehicle antenna is also provided, which is used to implement the above-mentioned embodiments and preferred implementation modes, and will not be repeated hereafter. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0078] This embodiment provides a simulation analysis device for a vehicle antenna. Figure 3 As shown, including:

[0079] The modeling module 301 is used to establish a vehicle body model and an antenna model of a vehicle-mounted antenna.

[0080] The setting module 302 is used to import the vehicle body model and the antenna model into the simulation software and set the simulation parameters of the simulation software.

[0081] The simulation module 303 is used to simulate and analyze the antenna model and the vehicle body model based on the bouncing ray algorithm solver and the finite element algorithm solver in the simulation software by using the equivalent source technology, obtain the simulation results and export them.

[0082] The determination module 304 is used to use the simulation result as the simulation analysis result of the vehicle-mounted antenna when the simulation result is consistent with the actual test result, and the actual test result represents the data obtained by performing a performance test on the vehicle-mounted antenna in an actual physical environment.

[0083] In some optional embodiments, the device further comprises:

[0084] The return module is used to adjust the simulation parameters of the simulation software when the simulation results are inconsistent with the actual test results, return to the bouncing ray algorithm solver and the finite element algorithm solver in the simulation software, simulate and analyze the antenna model and the vehicle body model, and obtain the simulation results and export them.

[0085] In some optional implementations, the modeling module 301 includes:

[0086] The acquisition unit is used to acquire the key dimensions of the vehicle body and the three-dimensional structural dimensions of the vehicle-mounted antenna.

[0087] The first modeling unit is used to use computer-aided design software to perform hierarchical modeling based on the three-dimensional structure size of the vehicle-mounted antenna to obtain an initial antenna model.

[0088] The second modeling unit is used to use computer-aided design software to perform modeling based on key dimensions of the vehicle body to obtain an initial vehicle body model.

[0089] The saving unit is used to save the initial vehicle body model and the initial antenna model in a file format compatible with the simulation software to obtain the vehicle body model and the antenna model.

[0090] In some optional implementations, before setting module 302, the device further includes:

[0091] The import module is used to set the import information file based on the initial antenna model.

[0092] In some optional implementations, the simulation module 303 includes:

[0093] Create a new unit to create a new three-dimensional far-field observation plane.

[0094] The first solving unit is used to solve the antenna model based on a finite element algorithm solver in a three-dimensional far-field observation plane to obtain an initial far-field directivity file.

[0095] The setting unit is used to set the export parameters and export the target far-field directivity file from the initial far-field directivity file.

[0096] The second solving unit is used to solve the vehicle body model based on the bouncing ray algorithm solver, taking the target far-field directivity file as an equivalent source, obtain the simulation results and export them.

[0097] In some optional embodiments, the device further comprises:

[0098] The analysis module is used to analyze the working performance of the vehicle-mounted antenna based on the simulation analysis results of the vehicle-mounted antenna.

[0099] The further functional description of each of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

[0100] The simulation and analysis device for the whole vehicle antenna in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0101] The embodiment of the present invention also provides a computer device having the above Figure 3 The simulation and analysis device of the whole vehicle antenna is shown.

[0102] See also Figure 4 , Figure 4 is a schematic diagram of the structure of a computer device provided by an optional embodiment of the present invention, such as Figure 4As shown, the computer device includes: one or more processors 10, a memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components are connected to each other using different buses for communication, and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple computer devices can be connected, and each device provides some necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 4 A processor 10 is taken as an example.

[0103] The processor 10 may be a central processing unit, a network processor or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be a dedicated integrated circuit, a programmable logic device or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic or any combination thereof.

[0104] The memory 20 stores instructions executable by at least one processor 10, so that at least one processor 10 executes the method shown in the above embodiment.

[0105] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the computer device, etc. In addition, the memory 20 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 optional embodiments, the memory 20 may optionally include a memory remotely arranged relative to the processor 10, and these remote memories may be connected to the computer device 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.

[0106] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid state drive; the memory 20 may also include a combination of the above types of memory.

[0107] The computer device also includes an input device 30 and an output device 40. The processor 10, the memory 20, the input device 30 and the output device 40 may be connected via a bus or other means. Figure 4 The example of connecting through bus is taken in the following.

[0108] The embodiment of the present invention also provides a computer-readable storage medium. The method according to the embodiment of the present invention can be implemented in hardware, firmware, or can be implemented as a computer code that can be recorded in a storage medium, or can be implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and will be stored in a local storage medium through a network download, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state hard disk, etc.; further, the storage medium can also include a combination of the above types of memories. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor, or hardware, the method shown in the above embodiment is implemented.

[0109] A part of the present invention may be applied as a computer program product, such as a computer program instruction, which, when executed by a computer, can call or provide the method and / or technical solution according to the present invention through the operation of the computer. Those skilled in the art should understand that the existence of the computer program instruction in a computer-readable medium includes, but is not limited to, a source file, an executable file, an installation package file, etc., and accordingly, the way in which the computer program instruction is executed by the computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Here, the computer-readable medium may be any available computer-readable storage medium or communication medium accessible to the computer.

[0110] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the present invention.

Claims

1. A simulation analysis method for a vehicle antenna, characterized in that: The method comprises: Establish a vehicle body model and an antenna model of the vehicle-mounted antenna; Importing the vehicle body model and the antenna model into simulation software, and setting simulation parameters of the simulation software; Based on the bouncing ray algorithm solver and the finite element algorithm solver in the simulation software, the antenna model and the vehicle body model are simulated and analyzed by using equivalent source technology to obtain simulation results and export them; When the simulation result is consistent with the actual test result, the simulation result is used as the simulation analysis result of the vehicle-mounted antenna, and the actual test result represents data obtained by performing a performance test on the vehicle-mounted antenna in an actual physical environment.

2. The method according to claim 1, characterized in that The method further comprises: When the simulation result is inconsistent with the actual test result, adjust the simulation parameters of the simulation software, return to the step of simulating and analyzing the antenna model and the vehicle body model based on the bouncing ray algorithm solver and the finite element algorithm solver in the simulation software, obtain the simulation result and export it.

3. The method according to claim 1, characterized in that The step of establishing a vehicle body model and an antenna model of a vehicle-mounted antenna includes: Obtaining key dimensions of the vehicle body and three-dimensional structural dimensions of the vehicle-mounted antenna; Using computer-aided design software, hierarchical modeling is performed based on the three-dimensional structure size of the vehicle-mounted antenna to obtain an initial antenna model; Using the computer-aided design software, modeling is performed based on key dimensions of the vehicle body to obtain an initial vehicle body model; The initial vehicle body model and the initial antenna model are saved in a file format compatible with the simulation software to obtain the vehicle body model and the antenna model.

4. The method according to claim 3, characterized in that Before importing the antenna model into the simulation software, the method further includes: Based on the initial antenna model, an import information file is set.

5. The method according to claim 1, characterized in that The bouncing ray algorithm solver and the finite element algorithm solver in the simulation software use equivalent source technology to simulate and analyze the antenna model and the vehicle body model, obtain simulation results and export them, including: Create a new 3D far-field observation plane; In the three-dimensional far-field observation plane, solving the antenna model based on the finite element algorithm solver to obtain an initial far-field directivity file; Setting export parameters to export a target far-field directivity file from the initial far-field directivity file; Based on the bouncing ray algorithm solver, the target far-field directivity file is used as an equivalent source to solve the vehicle body model, obtain the simulation result and export it.

6. The method according to claim 1, characterized in that The method further comprises: Based on the simulation analysis results of the vehicle-mounted antenna, the working performance of the vehicle-mounted antenna is analyzed.

7. A simulation analysis device for a vehicle antenna, characterized in that: The device comprises: A modeling module, used to establish a vehicle body model and an antenna model of a vehicle-mounted antenna; A setting module, used for importing the vehicle body model and the antenna model into the simulation software, and setting simulation parameters of the simulation software; A simulation module, for performing simulation analysis on the antenna model and the vehicle body model based on a bouncing ray algorithm solver and a finite element algorithm solver in the simulation software and using an equivalent source technology to obtain and export simulation results; The determination module is used to use the simulation result as the simulation analysis result of the vehicle-mounted antenna when the simulation result is consistent with the actual test result, and the actual test result represents the data obtained by performing a performance test on the vehicle-mounted antenna in an actual physical environment.

8. A computer device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the simulation analysis method for the whole vehicle antenna according to any one of claims 1 to 6 by executing the computer instructions.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the simulation analysis method for the whole vehicle antenna according to any one of claims 1 to 6.

10. A computer program product, characterized in that The method comprises computer instructions, wherein the computer instructions are used to enable a computer to execute the simulation analysis method for the whole vehicle antenna according to any one of claims 1 to 6.

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