Anti-interference analysis method, equipment, system and medium for vehicle-mounted radio frequency system

Abstract

The present application provides an anti-interference analysis method, device, system and medium for a vehicle-mounted radio frequency system, and relates to the field of electromagnetic compatibility technology. The method includes: obtaining a system model and input parameters of a wireless radio frequency system; obtaining antenna model parameters and antenna position of an environmental monitoring antenna on a vehicle; performing electromagnetic simulation calculations based on the system model and input parameters as well as antenna model parameters and antenna position to obtain electromagnetic simulation analysis results; obtaining spectrum data collected by the environmental monitoring device under preset spectrum acquisition parameters, when the environmental monitoring antenna is in an antenna position and a preset antenna orientation; performing electromagnetic simulation calculations based on the spectrum data and the electromagnetic simulation analysis results to obtain anti-interference analysis results of the vehicle-mounted radio frequency system, including the interference margins between the wireless radio frequency systems, and the interference margins between the wireless radio frequency system and the road environment. The method of the present application improves the practicality and effectiveness of anti-interference analysis of vehicle-mounted radio frequency systems.

Description

Technical Field

[0001] The present application relates to the field of electromagnetic compatibility technology, and in particular to an anti-interference analysis method, device, system and medium for a vehicle-mounted radio frequency system. Background Art

[0002] Radio frequency signals are the main medium used by vehicles to communicate with the outside world. With the development and application of intelligent network technology, vehicle-mounted radio frequency systems are becoming more and more complex, and the forms and frequencies of radio frequency signals involved are also becoming more and more complex. Therefore, it is necessary to analyze and evaluate the electromagnetic compatibility of vehicle radio frequency systems.

[0003] In the related art, electromagnetic simulation software is usually used to perform electromagnetic compatibility analysis on vehicle RF systems. The operator can import the three-dimensional geometric model of the vehicle into the electromagnetic simulation software, and set various parameters of the vehicle-mounted RF system to build a RF system model. The electromagnetic compatibility of the vehicle RF system can be analyzed using the electromagnetic simulation software, the constructed RF system model and various setting parameters to determine whether there is signal interference between the vehicle RF systems.

[0004] However, when the RF system model is constructed in the above manner, the electromagnetic environment parameters are fixed and may not be applicable to the actual electromagnetic environment when the vehicle is driving, especially for vehicles with complex electromagnetic environments, resulting in poor practicality and effectiveness of anti-interference analysis of the vehicle-mounted RF system. Summary of the invention

[0005] The embodiments of the present application provide an anti-interference analysis method, device, system and medium for a vehicle-mounted radio frequency system, which can improve the practicality and effectiveness of the anti-interference analysis of the vehicle-mounted radio frequency system.

[0006] In a first aspect, an embodiment of the present application provides an anti-interference analysis method for a vehicle-mounted radio frequency system, comprising:

[0007] Obtaining a system model and input parameters of a wireless radio frequency system in a three-dimensional vehicle model;

[0008] Obtain antenna model parameters and antenna position of the environment monitoring antenna on the vehicle;

[0009] Perform electromagnetic simulation calculation according to the system model and input parameters as well as the antenna model parameters and antenna position to obtain electromagnetic simulation analysis results;

[0010] Acquire spectrum data collected by the environment monitoring device under preset spectrum collection parameters and when the environment monitoring antenna is at the antenna position and the preset antenna orientation;

[0011] Electromagnetic simulation calculations are performed based on the spectrum data and the electromagnetic simulation analysis results to obtain anti-interference analysis results of the vehicle-mounted radio frequency system. The anti-interference analysis results include interference margins between each wireless radio frequency system and interference margins between the wireless radio frequency system and the road environment.

[0012] In a possible implementation manner, the spectrum data collected by the environment monitoring device under preset spectrum collection parameters and when the environment monitoring antenna is at the antenna position and the preset antenna orientation includes any one or more of the following:

[0013] Acquire first spectrum data obtained by the environment monitoring device when the environment monitoring antenna is at the antenna position and facing the front of the vehicle by performing frequency scanning according to the preset spectrum acquisition parameters;

[0014] Acquire second spectrum data obtained by the environment monitoring device performing frequency scanning according to the preset spectrum acquisition parameters when the environment monitoring antenna is at the antenna position and facing the rear of the vehicle;

[0015] Acquire third spectrum data obtained by the environment monitoring device performing frequency scanning according to the preset spectrum acquisition parameters when the environment monitoring antenna is at the antenna position and facing the left side of the vehicle;

[0016] The fourth spectrum data is obtained by the environment monitoring device performing a frequency scan according to the preset spectrum acquisition parameters when the environment monitoring antenna is at the antenna position and faces the right side of the vehicle.

[0017] In a possible implementation manner, before performing electromagnetic simulation calculation according to the spectrum data and the electromagnetic simulation analysis result to obtain the anti-interference analysis result of the vehicle-mounted radio frequency system, the method further includes:

[0018] The first spectrum data, the second spectrum data, the third spectrum data and the fourth spectrum data are formatted respectively to obtain environmental spectrum data adapted for electromagnetic simulation calculation.

[0019] In a possible implementation, performing electromagnetic simulation calculation according to the spectrum data and the electromagnetic simulation analysis result to obtain an anti-interference analysis result of the vehicle-mounted radio frequency system includes:

[0020] Performing electromagnetic simulation calculation according to the environmental spectrum data, the electromagnetic simulation analysis results and a preset comprehensive analysis script to obtain a comprehensive interference matrix, wherein the comprehensive interference matrix includes interference margins between each wireless radio frequency system and interference margins between the wireless radio frequency system and the road environment;

[0021] For each RF system-RF system interference margin / RF system-road environment interference margin,

[0022] Determining whether the interference margin is greater than a first margin threshold;

[0023] If it is less than or equal to the first margin threshold, determining that the anti-interference risk level between the wireless radio frequency system-wireless radio frequency system / wireless radio frequency system-road environment is high risk;

[0024] If it is greater than the first margin threshold, determining whether the interference margin is less than a second margin threshold, where the second margin threshold is greater than the first margin threshold;

[0025] If it is less than the second margin threshold, the anti-interference risk level between the wireless radio frequency system-wireless radio frequency system / wireless radio frequency system-road environment is determined to be medium risk; if it is greater than or equal to the second margin threshold, the anti-interference risk level between the wireless radio frequency system-wireless radio frequency system / wireless radio frequency system-road environment is determined to be low risk;

[0026] The anti-interference analysis result of the vehicle-mounted radio frequency system is determined according to the comprehensive interference matrix and the anti-interference risk level between each radio frequency system-radio frequency system / radio frequency system-road environment.

[0027] In a possible implementation, it further includes:

[0028] If the comprehensive interference matrix is ​​not obtained after performing electromagnetic simulation calculations based on the environmental spectrum data, the electromagnetic simulation analysis results and the preset comprehensive analysis script, a first calculation abnormality prompt message is output, and the first calculation abnormality prompt message is used to instruct the operator to re-enter the environmental spectrum data and / or the electromagnetic simulation analysis results, or to adjust the comprehensive analysis script.

[0029] In a possible implementation manner, performing electromagnetic simulation calculation according to the system model and input parameters as well as the antenna model parameters and antenna position to obtain electromagnetic simulation analysis results includes:

[0030] Obtaining a standard excitation source corresponding to the antenna port of the environment monitoring antenna, wherein the standard excitation source includes a standard voltage and a standard power;

[0031] Electromagnetic simulation calculations are performed according to the system model and input parameters, the antenna model parameters and antenna position, and the standard excitation source to obtain electromagnetic simulation analysis results under the standard excitation source condition.

[0032] In a possible implementation, it further includes:

[0033] If no electromagnetic simulation analysis result is obtained after performing electromagnetic simulation calculation according to the system model and input parameters, the antenna model parameters and antenna position, and the standard excitation source, a second calculation abnormality prompt information is output, and the second calculation abnormality prompt information is used to instruct the operator to re-enter the system model and input parameters of the wireless radio frequency system, and / or the antenna model parameters and antenna position.

[0034] In a second aspect, an embodiment of the present application provides a computing device, including:

[0035] A processor, and a memory communicatively connected to the processor;

[0036] Memory is used to store computer executable instructions;

[0037] The processor is used to execute the computer-executable instructions stored in the memory, so that the processor executes the above-mentioned first aspect and / or various possible implementations of the first aspect.

[0038] In a third aspect, an embodiment of the present application provides an anti-interference analysis system for a vehicle-mounted radio frequency system, comprising: an environmental monitoring device, an environmental monitoring antenna, and a computing device as described in aspect 8 of the second aspect;

[0039] The environment monitoring device is connected to the environment monitoring antenna via a feeder, and the environment monitoring device is also in communication connection with the computing device;

[0040] The environment monitoring device is used to perform frequency scanning according to the preset spectrum acquisition parameters to acquire spectrum data when the environment monitoring antenna is at the antenna position and the preset antenna orientation, and send the spectrum data to the computing device;

[0041] The computing device is used to obtain the system model and input parameters of the wireless radio frequency system in the three-dimensional model of the vehicle; obtain the antenna model parameters and antenna position of the environmental monitoring antenna on the vehicle; perform electromagnetic simulation calculations based on the system model and input parameters as well as the antenna model parameters and antenna position to obtain electromagnetic simulation analysis results; obtain spectrum data collected by the environmental monitoring device under preset spectrum acquisition parameters and when the environmental monitoring antenna is at the antenna position and preset antenna orientation; perform electromagnetic simulation calculations based on the spectrum data and the electromagnetic simulation analysis results to obtain anti-interference analysis results of the vehicle-mounted radio frequency system, wherein the anti-interference analysis results include interference margins between the wireless radio frequency systems and interference margins between the wireless radio frequency system and the road environment.

[0042] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the above-mentioned first aspect and / or various possible implementation methods of the first aspect.

[0043] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, is used to implement the above-mentioned first aspect and / or various possible implementation methods of the first aspect.

[0044] The embodiment of the present application provides an anti-interference analysis method, device, system and medium for a vehicle-mounted radio frequency system. The model can be first built and basic electromagnetic calculations can be performed by three-dimensional electromagnetic simulation of the whole vehicle to obtain preliminary electromagnetic simulation analysis results, and the antenna model parameters and antenna position of the environmental monitoring antenna on the vehicle are added in the preliminary electromagnetic simulation analysis process, and the antenna position is consistent with the position of the environmental monitoring antenna when it is actually used in the vehicle, so as to subsequently introduce the road electromagnetic environment data actually collected by the environmental monitoring antenna. After that, the environmental monitoring antenna can be actually placed at the antenna position calibrated during the electromagnetic simulation analysis of the vehicle, and the spectrum data sent and received during the actual driving of the vehicle, that is, the road electromagnetic environment data, can be collected using the environmental monitoring equipment. Finally, the collected spectrum data and the preliminary electromagnetic simulation analysis results are subjected to electromagnetic simulation calculations again, and the vehicle-mounted radio frequency system and the actual road electromagnetic environment data can be comprehensively analyzed to obtain the interference margin between each wireless radio frequency system and the interference margin between the wireless radio frequency system and the road environment, thereby quickly and effectively completing the anti-interference analysis of the vehicle-mounted radio frequency system. Through such a setting, anti-interference analysis can be performed on the basis of electromagnetic simulation of the on-board RF system combined with the actual electromagnetic environment data of the road in which the vehicle is located. It can evaluate the interference margin between each wireless RF system and between each wireless RF system and the road environment in real time and comprehensively. It is suitable for vehicles with complex electromagnetic environments, and better analysis and evaluation results can be achieved in the early stage of vehicle design, thereby improving the practicality and effectiveness of anti-interference analysis of the on-board RF system. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0046] Figure 1 A system architecture diagram of an embodiment of the present application;

[0047] Figure 2 A flowchart of an anti-interference analysis method for a vehicle-mounted radio frequency system according to an embodiment of the present application;

[0048] Figure 3A schematic diagram of the structure of a computing device according to an embodiment of the present application;

[0049] Figure 4 A schematic diagram of the structure of a computing device according to another embodiment of the present application.

[0050] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0051] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0052] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0053] In the technical solution of this application, the collection, storage, use, processing, transmission, provision and disclosure of information such as financial data or user data involved shall comply with the provisions of relevant laws and regulations and shall not violate public order and good morals.

[0054] It should be noted that in the embodiments of the present application, certain software, components, models and other existing solutions in the industry may be mentioned, and they should be regarded as exemplary. Their purpose is only to illustrate the feasibility of implementing the technical solution of the present application, but it does not mean that the applicant has or will necessarily use the solution.

[0055] It should also be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0056] The anti-interference analysis method, device, system and medium of the vehicle-mounted radio frequency system of the present application can be used in the field of electromagnetic compatibility technology, and can also be used in any field other than the field of electromagnetic compatibility technology, such as the field of signal interference technology, etc. The application field of the anti-interference analysis method, device, system and medium of the vehicle-mounted radio frequency system of the present application is not limited.

[0057] The anti-interference analysis method, device, system and medium of the vehicle-mounted radio frequency system of the present application can be applied to scenarios where electromagnetic compatibility analysis is performed on vehicles including wireless radio frequency systems. Any vehicle that communicates with the outside world in the form of radio frequency signals can apply the anti-interference analysis method, device, system and medium of the vehicle-mounted radio frequency system of the present application.

[0058] First, the terms involved in this application are explained:

[0059] Electromagnetic compatibility (EMC) refers to the ability of a device or system to work properly in its electromagnetic environment without causing unacceptable electromagnetic interference to anything in that environment (including other devices and systems). The goal of EMC is to ensure that electronic equipment is not disturbed in the expected electromagnetic environment and does not interfere with other devices.

[0060] Electromagnetic simulation analysis is the process of modeling and simulating electromagnetic phenomena using computer software. It plays an important role in the design and optimization of electronic devices, antennas, RF circuits, microwave devices, and systems in complex electromagnetic environments. Through electromagnetic simulation, engineers can identify and solve potential electromagnetic compatibility (EMC) problems, optimize performance, and reduce the number of physical prototypes and testing costs in the early stages of product development.

[0061] Interference Margin is an indicator used to evaluate the performance margin of electronic equipment or communication systems in the face of electromagnetic interference (EMI). It indicates how much additional interference the system can withstand without affecting its normal function. Interference margin is an important concept in electromagnetic compatibility (EMC) design because it helps engineers ensure that the equipment has sufficient anti-interference ability in the actual operating environment.

[0062] Radio frequency signals are the main medium used by vehicles to communicate with the outside world. With the development of vehicle technology, especially the development and application of intelligent network technology, vehicle-mounted radio frequency systems are becoming more and more complex, and the forms and frequencies of radio frequency signals involved are also becoming more and more complex. While this application improves vehicle performance and capabilities, it also brings about electromagnetic compatibility issues for vehicles. In order to ensure the electromagnetic compatibility of vehicles and guide the overall design of vehicles, it is necessary to analyze and evaluate the electromagnetic compatibility of vehicle radio frequency.

[0063] In the related art, electromagnetic simulation software is usually used to perform electromagnetic compatibility analysis on vehicle RF systems. The operator can import the three-dimensional geometric model of the vehicle into the electromagnetic simulation software, and set various parameters of the vehicle-mounted RF system to build a RF system model. The electromagnetic compatibility of the vehicle RF system can be analyzed using the electromagnetic simulation software, the constructed RF system model and various setting parameters to determine whether there is signal interference between the vehicle RF systems.

[0064] However, when the RF system model is constructed in the above manner, the electromagnetic environment parameters are fixed and may not be applicable to the actual electromagnetic environment when the vehicle is driving, especially for vehicles with complex electromagnetic environments, resulting in poor practicality and effectiveness of anti-interference analysis of the vehicle-mounted RF system.

[0065] In order to adapt to the actual electromagnetic environment when the vehicle is driving, the operator can also continuously change the electromagnetic environment parameters to build multiple RF system models for electromagnetic simulation tests. However, building multiple RF system models is slow and takes a long time, which cannot meet the needs of electromagnetic simulation tests.

[0066] Based on the above technical problems, the inventive concept of the present application is: how to provide an anti-interference analysis solution for a vehicle-mounted radio frequency system that can improve the practicality and effectiveness of the anti-interference analysis of the vehicle-mounted radio frequency system.

[0067] Usually, vehicle electromagnetic compatibility is verified through later system-level electromagnetic compatibility tests. However, for vehicles with complex electromagnetic environments, if electromagnetic interference problems are found later, the cost of rectification is very high or even impossible. Therefore, it is necessary to carry out system-level RF electromagnetic compatibility analysis during the vehicle system demonstration and design stage to detect electromagnetic compatibility problems early and make design improvements.

[0068] The embodiment of the present application provides an anti-interference analysis method, device, system and medium for a vehicle-mounted radio frequency system, which can use the system model and input parameters of the wireless radio frequency system, as well as the antenna model parameters and antenna position of the environmental monitoring antenna to build a model and perform basic electromagnetic calculations in the early stage of vehicle design to obtain preliminary electromagnetic simulation analysis results. The antenna position added in the preliminary electromagnetic simulation analysis process is consistent with the position of the environmental monitoring antenna when it is actually used in the vehicle. The environmental monitoring antenna is actually placed at the pre-calibrated antenna position of the vehicle, and the spectrum data sent and received during the actual driving of the vehicle, that is, the road electromagnetic environment data, can be collected using the environmental monitoring equipment. The collected spectrum data and the preliminary electromagnetic simulation analysis results are subjected to electromagnetic simulation calculation again, and the vehicle-mounted radio frequency system and the actual road electromagnetic environment data can be comprehensively analyzed, so that the interference margin between each wireless radio frequency system and between each wireless radio frequency system and the road environment can be evaluated in real time and comprehensively. Even vehicles with complex electromagnetic environments can be analyzed and evaluated in real time and effectively, and better analysis and evaluation results can be achieved in the early stage of vehicle design, thereby improving the practicality and effectiveness of the anti-interference analysis of the vehicle-mounted radio frequency system.

[0069] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0070] Figure 1 This is a system architecture diagram of an embodiment of the present application, such as Figure 1 As shown, the environmental monitoring device is connected to the environmental monitoring antenna through a feeder, and the environmental monitoring device is also connected to the computing device for communication. The environmental monitoring device can perform frequency scanning according to preset spectrum acquisition parameters when the environmental monitoring antenna is in a calibrated antenna position and a preset antenna orientation to collect spectrum data, and send the spectrum data to the computing device. The computing device can obtain the system model and input parameters of the wireless radio frequency system in the three-dimensional model of the vehicle; obtain the antenna model parameters and antenna position of the environmental monitoring antenna on the vehicle; perform electromagnetic simulation calculation according to the system model and input parameters and the antenna model parameters and antenna position to obtain electromagnetic simulation analysis results; obtain the spectrum data collected by the environmental monitoring device under the preset spectrum acquisition parameters and when the environmental monitoring antenna is in the antenna position and the preset antenna orientation; perform electromagnetic simulation calculation according to the spectrum data and the electromagnetic simulation analysis results to obtain the anti-interference analysis results of the vehicle-mounted radio frequency system, and the anti-interference analysis results include the interference margin between each wireless radio frequency system and the interference margin between the wireless radio frequency system and the road environment.

[0071] Figure 2This is a flow chart of an anti-interference analysis method for a vehicle-mounted radio frequency system according to an embodiment of the present application. This embodiment uses a computing device as an execution subject to illustrate the anti-interference analysis method for a vehicle-mounted radio frequency system. Figure 2 As shown, the anti-interference analysis method of the vehicle-mounted radio frequency system may include the following steps:

[0072] S201: Obtain a system model and input parameters of a wireless radio frequency system in a three-dimensional model of a vehicle.

[0073] In this embodiment, the computing device can be a terminal device, a server device, or a terminal-server integrated device. The specific type of the computing device can be flexibly set by technical personnel in this field, and no limitation is made here, as long as the computing device can perform electromagnetic simulation calculation and analysis.

[0074] In this embodiment, electromagnetic simulation software may be loaded into the computing device. The electromagnetic simulation software may adopt existing electromagnetic simulation software for wireless radio frequency systems, and no limitation is made here.

[0075] In this embodiment, the operator can open the electromagnetic simulation software in the computing device and create a new project file; then import the three-dimensional geometric model of the vehicle in the pre-processing module, and divide the grid of appropriate size according to the frequency band to be solved (the frequency band for anti-interference analysis); then set the system model and input parameters of the wireless radio frequency system installed on the vehicle in detail. The computing device can obtain the system model and input parameters of the wireless radio frequency system in the three-dimensional model of the vehicle according to the information input by the operator.

[0076] In this embodiment, the system model of the wireless radio frequency system can be flexibly set by those skilled in the art according to the wireless radio frequency system actually used in the vehicle, and no limitation is made here. Similarly, the input parameters can also be flexibly set by those skilled in the art according to actual needs, and no limitation is made here.

[0077] In this embodiment, the number of wireless radio frequency systems (system models) can be set accordingly by those skilled in the art according to the number of wireless radio frequency systems actually used in the vehicle, and no limitation is imposed herein.

[0078] S202: Obtain antenna model parameters and antenna position of an environment monitoring antenna on a vehicle.

[0079] In this embodiment, the environmental monitoring antenna can be a signal antenna installed on the vehicle and capable of sending and receiving electromagnetic environment data of the road around the vehicle. The specific type of the environmental monitoring antenna can be flexibly set by technicians in this field according to actual conditions and is not limited here.

[0080] In this embodiment, the antenna model parameters are consistent with the parameters of the actual environment monitoring antenna set on the actual vehicle, that is, the antenna model parameters can be used to construct an antenna model whose various information is consistent with the actual environment monitoring antenna. Similarly, the antenna position is also consistent with the position of the actual environment monitoring antenna set on the actual vehicle. The antenna model parameters and antenna position can be used to characterize various information of the environment monitoring antenna during actual use, so that the spectrum data collected by the environment monitoring antenna can be introduced later for electromagnetic simulation calculations.

[0081] S203: Perform electromagnetic simulation calculation according to the system model and input parameters as well as antenna model parameters and antenna position to obtain electromagnetic simulation analysis results.

[0082] In this embodiment, after the operator completes the various parameter settings of the wireless RF system and the environmental monitoring antenna in the pre-processing module of the electromagnetic simulation software, he can enter the post-processing module and use the various set parameters to perform preliminary electromagnetic simulation calculations to obtain electromagnetic simulation analysis results.

[0083] S204: Acquire spectrum data collected by the environment monitoring device under preset spectrum collection parameters and when the environment monitoring antenna is at an antenna position and a preset antenna orientation.

[0084] In this embodiment, the operator can place the actual environmental monitoring antenna at the calibrated position of the actual vehicle (the antenna position of the environmental monitoring antenna in the electromagnetic simulation software). The environmental monitoring antenna can be connected to the environmental monitoring device through a feeder. The position of the environmental monitoring device can be set arbitrarily without any restrictions.

[0085] Afterwards, the operator can turn on the environmental monitoring device and set the spectrum acquisition parameters (the spectrum parameters required for anti-interference analysis) to put it in a monitoring state; point the environmental monitoring antenna toward the preset antenna direction, and the environmental monitoring device can perform frequency scanning in the state of the antenna arrangement direction and save the obtained spectrum data; afterward, the environmental monitoring device can transmit the collected spectrum data to the computing device.

[0086] In this embodiment, the preset spectrum acquisition parameters may be parameters of the frequency band for which the vehicle-mounted radio frequency system needs to perform anti-interference analysis. Those skilled in the art may flexibly set the parameters according to actual needs, and no limitation is imposed herein.

[0087] In this embodiment, the preset antenna direction can be flexibly set by those skilled in the art according to actual needs, and no limitation is made here.

[0088] In this embodiment, the operator can also use the actual environment monitoring antenna and environment monitoring equipment set on the actual vehicle to collect spectrum data during the actual driving of the vehicle, that is, road electromagnetic environment data. When collecting spectrum data, the position of the environment monitoring antenna on the vehicle should be consistent with the position of the environment monitoring antenna in the electromagnetic simulation software, so as to facilitate the subsequent fusion and calculation of spectrum data and electromagnetic simulation analysis results.

[0089] S205: Perform electromagnetic simulation calculation according to the spectrum data and the electromagnetic simulation analysis results to obtain the anti-interference analysis results of the vehicle-mounted radio frequency system.

[0090] In this embodiment, the anti-interference analysis result may include the interference margins between the wireless radio frequency systems and the interference margins between the wireless radio frequency system and the road environment.

[0091] In this embodiment, after the environmental monitoring device transmits the collected spectrum data to the computing device, the computing device can run a pre-set comprehensive analysis script to perform a comprehensive analysis and output a comprehensive interference matrix. The comprehensive interference matrix can include the interference margins between the wireless RF systems and the interference margins between the wireless RF systems and the road environment. The RF signal interference between the wireless RF systems can be analyzed and evaluated based on the interference margins between the wireless RF systems. The RF signal interference between the wireless RF systems and the road environment can be analyzed and evaluated based on the interference margins between the wireless RF systems and the road environment.

[0092] In this embodiment, the model can be built and basic electromagnetic calculations can be performed by three-dimensional electromagnetic simulation of the whole vehicle to obtain preliminary electromagnetic simulation analysis results, and the antenna model parameters and antenna position of the environmental monitoring antenna on the vehicle are added in the preliminary electromagnetic simulation analysis process, and the antenna position is consistent with the position of the environmental monitoring antenna when it is actually used in the vehicle, so as to subsequently introduce the road electromagnetic environment data actually collected by the environmental monitoring antenna. After that, the environmental monitoring antenna can be actually placed at the antenna position calibrated during the electromagnetic simulation analysis of the vehicle, and the spectrum data sent and received during the actual driving of the vehicle can be collected using the environmental monitoring equipment, that is, the road electromagnetic environment data. Finally, the collected spectrum data and the preliminary electromagnetic simulation analysis results are subjected to electromagnetic simulation calculations again, and the vehicle-mounted radio frequency system and the actual road electromagnetic environment data can be comprehensively analyzed to obtain the interference margin between each wireless radio frequency system and the interference margin between the wireless radio frequency system and the road environment, thereby quickly and effectively completing the anti-interference analysis of the vehicle-mounted radio frequency system. Through such a setting, anti-interference analysis can be performed on the basis of electromagnetic simulation of the on-board RF system combined with the actual electromagnetic environment data of the road in which the vehicle is located. It can evaluate the interference margin between each wireless RF system and between each wireless RF system and the road environment in real time and comprehensively. It is suitable for vehicles with complex electromagnetic environments, and better analysis and evaluation results can be achieved in the early stage of vehicle design, thereby improving the practicality and effectiveness of anti-interference analysis of the on-board RF system.

[0093] In a possible implementation, the above step S203 performs electromagnetic simulation calculation according to the system model and input parameters as well as antenna model parameters and antenna position to obtain electromagnetic simulation analysis results, which may include:

[0094] S11: Obtain a standard excitation source corresponding to the antenna port of the environment monitoring antenna, where the standard excitation source includes a standard voltage and a standard power.

[0095] S12: Perform electromagnetic simulation calculations according to the system model and input parameters, antenna model parameters and antenna position, and standard excitation source to obtain electromagnetic simulation analysis results under standard excitation source conditions.

[0096] In this embodiment, those skilled in the art can flexibly set the standard excitation source according to actual needs. For example, the standard excitation source may be a standard voltage of 1V and a standard power of 1W, without any limitation.

[0097] In this embodiment, the specific process of the electromagnetic simulation software performing electromagnetic simulation calculation according to the system model and input parameters, antenna model parameters and antenna position and standard excitation source can refer to the relevant existing technology and will not be described in detail here.

[0098] In this embodiment, the operator can also set a standard excitation source at the antenna port when setting the antenna model parameters in the pre-processing module, that is, the standard input of the port. The post-processing module of the electromagnetic simulation software can perform electromagnetic simulation calculations based on the system model and input parameters, antenna model parameters and antenna position, and the standard excitation source to obtain the electromagnetic simulation analysis results under the conditions of the standard excitation source.

[0099] In a possible implementation, the method may further include:

[0100] If no electromagnetic simulation analysis result is obtained after performing electromagnetic simulation calculation according to the system model and input parameters, antenna model parameters and antenna position, and standard excitation source in the above step S12, a second calculation abnormality prompt information is output, and the second calculation abnormality prompt information is used to instruct the operator to re-enter the system model and input parameters of the wireless radio frequency system, and / or antenna model parameters and antenna position.

[0101] In this embodiment, the second calculation abnormality prompt information can be one or more of text information, sound information, and graphic information. Those skilled in the art can flexibly set it according to actual needs, and no limitation is made here.

[0102] In this embodiment, if no electromagnetic simulation analysis results are obtained after the electromagnetic simulation calculation, it means that the parameters and other information input by the operator may be wrong, resulting in problems in the electromagnetic simulation calculation. At this time, the operator needs to be prompted to check and modify the relevant input in time.

[0103] In this embodiment, when the electromagnetic simulation software performs electromagnetic simulation calculations based on the system model and input parameters, antenna model parameters and antenna position, and standard excitation source, operation errors or non-operation and other abnormalities may occur, resulting in problems with the electromagnetic simulation calculation and inability to output electromagnetic simulation analysis results. At this time, the computing device can output a second calculation abnormality prompt message to promptly prompt the operator to promptly check and modify the simulation model and solution parameters, and re-perform the electromagnetic simulation calculation.

[0104] In a possible implementation, the spectrum data collected by the environment monitoring device in step S204 under preset spectrum collection parameters and when the environment monitoring antenna is at the antenna position and the preset antenna orientation may include any one or more of the following:

[0105] S21: Acquire first spectrum data obtained by performing frequency scanning according to preset spectrum acquisition parameters when the environment monitoring device is in the antenna position and facing the front of the vehicle.

[0106] S22: Acquire second spectrum data obtained by performing frequency scanning according to preset spectrum acquisition parameters when the environment monitoring device is in the antenna position and facing the rear of the vehicle.

[0107] S23: Acquire third spectrum data obtained by performing frequency scanning according to preset spectrum acquisition parameters when the environment monitoring device is in the antenna position and facing the left side of the vehicle.

[0108] S24: Acquire fourth spectrum data obtained by performing frequency scanning according to preset spectrum acquisition parameters when the environment monitoring device is in the antenna position and facing the right side of the vehicle.

[0109] In this implementation, the preset spectrum acquisition parameters may be parameters of the frequency bands for which the vehicle-mounted radio frequency system needs to perform anti-interference analysis. Those skilled in the art may flexibly set the parameters according to actual needs, and no limitation is imposed herein.

[0110] In this embodiment, the preset antenna direction can be toward the front, rear, left and right sides of the vehicle. By setting the environmental monitoring antenna at the calibrated antenna position of the vehicle and in four main antenna directions respectively, the environmental monitoring equipment performs frequency scanning according to the preset spectrum acquisition parameters. It can comprehensively and accurately collect road electromagnetic data during the actual driving process of the vehicle. It is suitable for vehicles with complex electromagnetic environments, and improves the generalization and adaptability of the anti-interference analysis of the vehicle-mounted RF system.

[0111] In a possible implementation, before performing electromagnetic simulation calculation according to the spectrum data and the electromagnetic simulation analysis result to obtain the anti-interference analysis result of the vehicle-mounted radio frequency system in the above step S205, the following may also be included:

[0112] The first spectrum data, the second spectrum data, the third spectrum data and the fourth spectrum data are formatted respectively to obtain environmental spectrum data adapted for electromagnetic simulation calculation.

[0113] In this embodiment, after obtaining the environmental spectrum data adapted for electromagnetic simulation calculation, the processed spectrum data can also be checked. If the data does not meet the requirements, the formatting process is repeated until the environmental spectrum data meets the requirements of electromagnetic simulation calculation.

[0114] In this embodiment, before performing electromagnetic simulation calculations based on the spectrum data and electromagnetic simulation analysis results, the computing device also needs to format the acquired first spectrum data, second spectrum data, third spectrum data, and fourth spectrum data, so that the processed data format should be consistent with the format required for input by the electromagnetic simulation software to facilitate subsequent electromagnetic simulation calculations.

[0115] In a possible implementation, the above step S205 performs electromagnetic simulation calculation according to the spectrum data and the electromagnetic simulation analysis result to obtain the anti-interference analysis result of the vehicle-mounted radio frequency system, which may include:

[0116] S31: Perform electromagnetic simulation calculations according to environmental spectrum data, electromagnetic simulation analysis results, and a preset comprehensive analysis script to obtain a comprehensive interference matrix, which includes interference margins between various wireless radio frequency systems and interference margins between the wireless radio frequency system and the road environment.

[0117] S32: For each radio frequency system-radio frequency system interference margin / radio frequency system-road environment interference margin, determine whether the interference margin is greater than a first margin threshold.

[0118] S33: If it is less than or equal to the first margin threshold, determine that the anti-interference risk level between the wireless radio frequency system-wireless radio frequency system / wireless radio frequency system-road environment is high risk.

[0119] S34: If it is greater than the first margin threshold, determine whether the interference margin is less than the second margin threshold, and the second margin threshold is greater than the first margin threshold.

[0120] S35: If it is less than the second margin threshold, the anti-interference risk level between the wireless RF system-wireless RF system / wireless RF system-road environment is determined to be medium risk; if it is greater than or equal to the second margin threshold, the anti-interference risk level between the wireless RF system-wireless RF system / wireless RF system-road environment is determined to be low risk.

[0121] S36: Determine the anti-interference analysis result of the vehicle-mounted RF system according to the comprehensive interference matrix and the anti-interference risk level between each RF system-RF system / RF system-road environment.

[0122] In this embodiment, the operator can edit the comprehensive analysis script and save it in the computing device. During the actual electromagnetic simulation calculation, the operator can modify the current actual simulation model file and the environmental spectrum data file name, and then run the corresponding analysis program to obtain the comprehensive interference matrix.

[0123] In this embodiment, the comprehensive interference matrix is ​​quantitatively expressed by the interference margin between each RF system, and the anti-interference risk level is evaluated according to the size of the interference margin. After determining the comprehensive interference matrix and the anti-interference risk level, the anti-interference level between each on-board RF system and between the on-board RF system and the electromagnetic environment of the road outside the vehicle can be analyzed and evaluated, and an anti-interference analysis and evaluation report of the on-board RF system can be output.

[0124] In this implementation, the anti-interference risk levels between the radio frequency system-radio frequency system / radio frequency system-road environment can be reflected in the comprehensive interference matrix using different colors.

[0125] In this implementation, those skilled in the art may flexibly set the first margin threshold and the second margin threshold according to actual conditions, and no limitation is imposed herein, as long as the first margin threshold is smaller than the second margin threshold.

[0126] For example, the following Table 1 is a comprehensive interference matrix of a vehicle-mounted radio frequency system:

[0127] Table 1

[0128]

[0129] As shown in Table 1, the comprehensive interference matrix includes the interference margins between the RF systems and the interference margins between the RF system and the road environment. The anti-interference risk level between the RF system-RF system / RF system-road environment can also be determined based on the relationship between the interference margin and the preset margin threshold. The interference conditions of the corresponding RF systems are indicated by different colors in the table. For example, green indicates no interference (low risk), red indicates that the RF system is interfered with (high risk), and yellow indicates that the RF system is not interfered with but the anti-interference margin is insufficient (medium risk).

[0130] In this embodiment, after running the comprehensive analysis script to perform electromagnetic simulation calculations to obtain a comprehensive interference matrix, the anti-interference risk level between the wireless RF system-wireless RF system / wireless RF system-road environment can be determined based on the relationship between the interference margin of the wireless RF system-wireless RF system / the interference margin of the wireless RF system-road environment in the comprehensive interference matrix and the preset margin threshold, and the anti-interference analysis and evaluation of the vehicle-mounted RF system can be accurately completed based on the comprehensive interference matrix and the anti-interference risk level.

[0131] In a possible implementation, the method may further include:

[0132] If the comprehensive interference matrix is ​​not obtained after the electromagnetic simulation calculation is performed according to the environmental spectrum data, the electromagnetic simulation analysis results and the preset comprehensive analysis script in the above step S31, a first calculation abnormality prompt information is output, and the first calculation abnormality prompt information is used to instruct the operator to re-enter the environmental spectrum data and / or the electromagnetic simulation analysis results, or adjust the comprehensive analysis script.

[0133] In this embodiment, the first calculation abnormality prompt information can be one or more of text information, sound information, and graphic information. Those skilled in the art can flexibly set it according to actual needs, and no limitation is made here.

[0134] In this embodiment, if no electromagnetic simulation analysis results are obtained after the electromagnetic simulation calculation, it means that the comprehensive analysis script or the data input by the operator may be wrong, resulting in problems in the electromagnetic simulation calculation. At this time, the operator needs to be prompted to check and modify the relevant information in time.

[0135] In this embodiment, when the electromagnetic simulation software performs electromagnetic simulation calculations based on the environmental spectrum data, electromagnetic simulation analysis results, and a preset comprehensive analysis script, operation errors or non-operation and other abnormalities may occur, resulting in problems with the electromagnetic simulation calculation and inability to output the comprehensive interference matrix. At this time, the computing device can output a first calculation abnormality prompt message to promptly prompt the operator to promptly check and modify the input information and comprehensive analysis script, and re-perform the electromagnetic simulation calculation.

[0136] The anti-interference analysis method of the vehicle-mounted radio frequency system of the present application is described below with a specific embodiment.

[0137] In a specific embodiment, after designing the vehicle three-dimensional model and related parameters of the vehicle radio frequency system, the R&D personnel of a vehicle R&D institute want to perform anti-interference analysis and evaluation on the vehicle radio frequency system in the early stage of design. The specific anti-interference analysis process of the vehicle radio frequency system is as follows:

[0138] In the first step, R&D personnel open the electromagnetic simulation software in the computing device and create a new project file. Then, they import the vehicle's three-dimensional geometric model into the pre-processing module and divide the grid into appropriate sizes according to the solution frequency band (the frequency band for anti-interference analysis).

[0139] In the second step, the R&D personnel set the system model and input parameters of the wireless RF system installed on the vehicle in detail, set the antenna model parameters and antenna position of the environmental monitoring antenna subsequently installed on the vehicle, and set the standard excitation source at the antenna port.

[0140] In the third step, the computing device obtains the system model and input parameters of the wireless radio frequency system in the three-dimensional model of the vehicle, and obtains the antenna model parameters and antenna position of the environmental monitoring antenna on the vehicle, as well as the standard excitation source.

[0141] In the fourth step, the computing device performs electromagnetic simulation calculations based on the system model and input parameters, antenna model parameters and antenna position, and standard excitation source to obtain electromagnetic simulation analysis results under standard excitation source conditions.

[0142] In the fifth step, the R&D personnel place the actual environmental monitoring antenna at the calibrated position of the actual vehicle (the antenna position of the environmental monitoring antenna in the electromagnetic simulation software), and connect the environmental monitoring antenna to the environmental monitoring device through a feeder.

[0143] In the sixth step, the R&D personnel turn on the environmental monitoring device and set the spectrum acquisition parameters (the spectrum parameters required for anti-interference analysis) to put it in a monitoring state; point the environmental monitoring antenna toward the front of the vehicle, so that the environmental monitoring device performs a frequency scan in the direction of the antenna arrangement, and save the first spectrum data.

[0144] In the seventh step, the R&D personnel respectively point the environmental monitoring antenna toward the rear, left side and right side of the vehicle, so that the environmental monitoring device scans and obtains the second spectrum data, the third spectrum data and the fourth spectrum data corresponding to the antenna direction, and the environmental monitoring device sends the first spectrum data, the second spectrum data, the third spectrum data and the fourth spectrum data to the computing device.

[0145] In the eighth step, the computing device formats the first spectrum data, the second spectrum data, the third spectrum data, and the fourth spectrum data respectively to obtain environmental spectrum data suitable for electromagnetic simulation calculation.

[0146] In the ninth step, the computing device performs electromagnetic simulation calculations based on the environmental spectrum data, electromagnetic simulation analysis results, and a preset comprehensive analysis script to obtain a comprehensive interference matrix. The comprehensive interference matrix includes the interference margins between each wireless RF system and the interference margins between the wireless RF system and the road environment.

[0147] In the tenth step, the computing device determines whether the interference margin of each wireless RF system-wireless RF system / wireless RF system-road environment is greater than a first margin threshold; if it is less than or equal to the first margin threshold, the anti-interference risk level between the wireless RF system-wireless RF system / wireless RF system-road environment is determined to be high risk; if it is less than the second margin threshold, the anti-interference risk level between the wireless RF system-wireless RF system / wireless RF system-road environment is determined to be medium risk; if it is greater than or equal to the second margin threshold, the anti-interference risk level between the wireless RF system-wireless RF system / wireless RF system-road environment is determined to be low risk.

[0148] In the eleventh step, the computing device determines the display color of each unit in the comprehensive interference matrix according to the corresponding relationship between the preset anti-interference risk level and the display color, determines the anti-interference analysis result of the vehicle-mounted RF system according to the comprehensive interference matrix and the anti-interference risk level between each wireless RF system-wireless RF system / wireless RF system-road environment, and outputs the vehicle-mounted RF system anti-interference analysis evaluation report.

[0149] Figure 3 This is a schematic diagram of the structure of a computing device according to an embodiment of the present application. Figure 3As shown, the computing device includes: an acquisition module 31, which is used to acquire the system model and input parameters of the wireless radio frequency system in the three-dimensional model of the vehicle; acquire the antenna model parameters and antenna position of the environmental monitoring antenna on the vehicle; a processing module 32, which is used to perform electromagnetic simulation calculations according to the system model and input parameters as well as the antenna model parameters and antenna position to obtain electromagnetic simulation analysis results; acquire spectrum data collected by the environmental monitoring device under preset spectrum acquisition parameters and when the environmental monitoring antenna is at the antenna position and preset antenna orientation; perform electromagnetic simulation calculations according to the spectrum data and the electromagnetic simulation analysis results to obtain the anti-interference analysis results of the vehicle-mounted radio frequency system, and the anti-interference analysis results include the interference margins between the wireless radio frequency systems and the interference margins between the wireless radio frequency system and the road environment.

[0150] The computing device provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0151] Figure 4 This is a schematic diagram of the structure of a computing device according to another embodiment of the present application. Figure 4 As shown, the computing device includes: a processor 401, and a memory 402 that is communicatively connected to the processor 401; the memory 402 stores computer-executable instructions; the processor 401 executes the computer-executable instructions stored in the memory 402 to implement the steps of the anti-interference analysis method of the vehicle-mounted radio frequency system in the above-mentioned method embodiments.

[0152] In the above computing device, the memory 402 and the processor 401 are electrically connected directly or indirectly to realize data transmission or interaction. For example, these elements can be electrically connected to each other through one or more communication buses or signal lines, such as through a bus connection. The memory 402 stores computer-executable instructions for implementing the data access control method, including at least one software function module that can be stored in the memory 402 in the form of software or firmware. The processor 401 executes various functional applications and data processing by running the software programs and modules stored in the memory 402.

[0153] The memory 402 may be, but is not limited to, a random access memory (RAM), a read only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electric erasable programmable read-only memory (EEPROM), etc. The memory 402 is used to store programs, and the processor 401 executes the programs after receiving the execution instruction. Furthermore, the software programs and modules in the above-mentioned memory 402 may also include an operating system, which may include various software components and / or drivers for managing system tasks (such as memory management, storage device control, power management, etc.), and may communicate with various hardware or software components to provide an operating environment for other software components.

[0154] The processor 401 may be an integrated circuit chip having the ability to process signals. The processor 401 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc. The methods, steps, and logic diagrams disclosed in the embodiments of the present application may be implemented or executed. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0155] An embodiment of the present application also provides an anti-interference analysis system for a vehicle-mounted radio frequency system, such as Figure 1 As shown, it may include: environmental monitoring equipment, environmental monitoring antenna and Figure 4 The computing device shown.

[0156] The environment monitoring device is connected to the environment monitoring antenna via a feeder line, and the environment monitoring device is also connected to the computing device for communication.

[0157] The environmental monitoring device can be used to perform frequency scanning according to preset spectrum acquisition parameters when the environmental monitoring antenna is in the antenna position and the preset antenna orientation to collect spectrum data and send the spectrum data to the computing device.

[0158] The computing device can be used to obtain the system model and input parameters of the wireless radio frequency system in the three-dimensional model of the vehicle; obtain the antenna model parameters and antenna position of the environmental monitoring antenna on the vehicle; perform electromagnetic simulation calculations based on the system model and input parameters as well as the antenna model parameters and antenna position to obtain electromagnetic simulation analysis results; obtain spectrum data collected by the environmental monitoring device under preset spectrum acquisition parameters and when the environmental monitoring antenna is at the antenna position and preset antenna orientation; perform electromagnetic simulation calculations based on the spectrum data and the electromagnetic simulation analysis results to obtain the anti-interference analysis results of the vehicle-mounted radio frequency system, the anti-interference analysis results including the interference margins between the wireless radio frequency systems and the interference margins between the wireless radio frequency system and the road environment.

[0159] An embodiment of the present application further provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the steps of each method embodiment of the present application.

[0160] An embodiment of the present application further provides a computer program product, including a computer program, which implements the steps of each method embodiment of the present application when executed by a processor.

[0161] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by the present application.

[0162] It should be further noted that, although the various steps in the flowchart are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowchart may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these sub-steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0163] It should be understood that the above-mentioned device embodiments are only illustrative, and the device of the present application can also be implemented in other ways. For example, the division of units / modules in the above-mentioned embodiments is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units, modules or components can be combined, or can be integrated into another system, or some features can be ignored or not executed.

[0164] In addition, unless otherwise specified, each functional unit / module in each embodiment of the present application may be integrated into one unit / module, each unit / module may exist physically separately, or two or more units / modules may be integrated together. The above-mentioned integrated unit / module may be implemented in the form of hardware or in the form of a software program module.

[0165] In the above embodiments, the description of each embodiment has its own emphasis. For the part not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0166] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the appended claims.

[0167] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. An anti-interference analysis method for a vehicle-mounted radio frequency system, characterized in that: include: Obtaining a system model and input parameters of a wireless radio frequency system in a three-dimensional vehicle model; Obtain antenna model parameters and antenna position of the environment monitoring antenna on the vehicle; Perform electromagnetic simulation calculation according to the system model and input parameters as well as the antenna model parameters and antenna position to obtain electromagnetic simulation analysis results; Acquire spectrum data collected by the environment monitoring device under preset spectrum collection parameters and when the environment monitoring antenna is at the antenna position and preset antenna orientation; Electromagnetic simulation calculations are performed based on the spectrum data and the electromagnetic simulation analysis results to obtain anti-interference analysis results of the vehicle-mounted radio frequency system. The anti-interference analysis results include interference margins between each wireless radio frequency system and interference margins between the wireless radio frequency system and the road environment.

2. The anti-interference analysis method of the vehicle-mounted radio frequency system according to claim 1, characterized in that: The acquiring of spectrum data collected by the environment monitoring device under preset spectrum collection parameters and when the environment monitoring antenna is at the antenna position and the preset antenna orientation includes any one or more of the following: Acquire first spectrum data obtained by the environment monitoring device when the environment monitoring antenna is at the antenna position and facing the front of the vehicle by performing frequency scanning according to the preset spectrum acquisition parameters; Acquire second spectrum data obtained by the environment monitoring device performing frequency scanning according to the preset spectrum acquisition parameters when the environment monitoring antenna is at the antenna position and facing the rear of the vehicle; Acquire third spectrum data obtained by the environment monitoring device performing frequency scanning according to the preset spectrum acquisition parameters when the environment monitoring antenna is at the antenna position and faces the left side of the vehicle; The fourth spectrum data is obtained by the environment monitoring device performing a frequency scan according to the preset spectrum acquisition parameters when the environment monitoring antenna is at the antenna position and faces the right side of the vehicle.

3. The anti-interference analysis method of the vehicle-mounted radio frequency system according to claim 2, characterized in that: Before performing electromagnetic simulation calculation according to the spectrum data and the electromagnetic simulation analysis result to obtain the anti-interference analysis result of the vehicle-mounted radio frequency system, the method further includes: The first spectrum data, the second spectrum data, the third spectrum data and the fourth spectrum data are formatted respectively to obtain environmental spectrum data adapted for electromagnetic simulation calculation.

4. The anti-interference analysis method of the vehicle-mounted radio frequency system according to claim 3, characterized in that: The electromagnetic simulation calculation is performed according to the spectrum data and the electromagnetic simulation analysis result to obtain the anti-interference analysis result of the vehicle-mounted radio frequency system, including: Performing electromagnetic simulation calculation according to the environmental spectrum data, the electromagnetic simulation analysis results and a preset comprehensive analysis script to obtain a comprehensive interference matrix, wherein the comprehensive interference matrix includes interference margins between each wireless radio frequency system and interference margins between the wireless radio frequency system and the road environment; For each RF system-RF system interference margin / RF system-road environment interference margin, Determining whether the interference margin is greater than a first margin threshold; If it is less than or equal to the first margin threshold, determining that the anti-interference risk level between the wireless radio frequency system-wireless radio frequency system / wireless radio frequency system-road environment is high risk; If it is greater than the first margin threshold, determining whether the interference margin is less than a second margin threshold, where the second margin threshold is greater than the first margin threshold; If it is less than the second margin threshold, the anti-interference risk level between the wireless radio frequency system-wireless radio frequency system / wireless radio frequency system-road environment is determined to be medium risk; if it is greater than or equal to the second margin threshold, the anti-interference risk level between the wireless radio frequency system-wireless radio frequency system / wireless radio frequency system-road environment is determined to be low risk; The anti-interference analysis result of the vehicle-mounted radio frequency system is determined according to the comprehensive interference matrix and the anti-interference risk level between each radio frequency system-radio frequency system / radio frequency system-road environment.

5. The anti-interference analysis method of the vehicle-mounted radio frequency system according to claim 4, characterized in that: Also includes: If the comprehensive interference matrix is ​​not obtained after performing electromagnetic simulation calculations based on the environmental spectrum data, the electromagnetic simulation analysis results and the preset comprehensive analysis script, a first calculation abnormality prompt message is output, and the first calculation abnormality prompt message is used to instruct the operator to re-enter the environmental spectrum data and / or the electromagnetic simulation analysis results, or to adjust the comprehensive analysis script.

6. The anti-interference analysis method for a vehicle-mounted radio frequency system according to any one of claims 1 to 5, characterized in that: The performing electromagnetic simulation calculation according to the system model and input parameters as well as the antenna model parameters and antenna position to obtain electromagnetic simulation analysis results includes: Obtaining a standard excitation source corresponding to the antenna port of the environment monitoring antenna, wherein the standard excitation source includes a standard voltage and a standard power; Electromagnetic simulation calculations are performed according to the system model and input parameters, the antenna model parameters and antenna position, and the standard excitation source to obtain electromagnetic simulation analysis results under the standard excitation source condition.

7. The anti-interference analysis method of the vehicle-mounted radio frequency system according to claim 6, characterized in that: Also includes: If no electromagnetic simulation analysis result is obtained after performing electromagnetic simulation calculation according to the system model and input parameters, the antenna model parameters and antenna position, and the standard excitation source, a second calculation abnormality prompt information is output, and the second calculation abnormality prompt information is used to instruct the operator to re-enter the system model and input parameters of the wireless radio frequency system, and / or the antenna model parameters and antenna position.

8. A computing device, characterized in that include: A processor, and a memory communicatively connected to the processor; The memory is used to store computer-executable instructions; The processor is used to execute the computer-executable instructions stored in the memory, so that the processor executes the anti-interference analysis method for the vehicle-mounted radio frequency system according to any one of claims 1 to 7.

9. An anti-interference analysis system for a vehicle-mounted radio frequency system, characterized in that: include: An environmental monitoring device, an environmental monitoring antenna, and a computing device as claimed in claim 8; The environment monitoring device is connected to the environment monitoring antenna via a feeder, and the environment monitoring device is also in communication connection with the computing device; The environment monitoring device is used to perform frequency scanning according to the preset spectrum acquisition parameters to acquire spectrum data when the environment monitoring antenna is at the antenna position and the preset antenna orientation, and send the spectrum data to the computing device; The computing device is used to obtain a system model and input parameters of a wireless radio frequency system in a three-dimensional model of a vehicle; Obtain antenna model parameters and antenna position of the environment monitoring antenna on the vehicle; perform electromagnetic simulation calculation according to the system model and input parameters as well as the antenna model parameters and antenna position to obtain electromagnetic simulation analysis results; Acquire spectrum data collected by the environment monitoring device under preset spectrum collection parameters and when the environment monitoring antenna is at the antenna position and the preset antenna orientation; Electromagnetic simulation calculations are performed based on the spectrum data and the electromagnetic simulation analysis results to obtain anti-interference analysis results of the vehicle-mounted radio frequency system. The anti-interference analysis results include interference margins between each wireless radio frequency system and interference margins between the wireless radio frequency system and the road environment.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the anti-interference analysis method for a vehicle-mounted radio frequency system according to any one of claims 1 to 7.

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