A vehicle electromagnetic self-compatibility risk detection method and device

Abstract

The application provides a whole vehicle electromagnetic self-compatibility risk detection method and device, the method comprises the following steps: classifying components in the whole vehicle into sensitive source components and disturbance source components according to electromagnetic characteristics; then obtaining arrangement information of the sensitive source components and the disturbance source components; and obtaining arrangement self-compatibility risk detection results, wire harness co-line self-compatibility risk detection results and wire harness power distribution and ground distribution self-compatibility risk detection results through the arrangement information, and then obtaining self-compatibility detection results of the whole vehicle, so that the detection accuracy is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive self-compatibility testing technology, and in particular to a method and apparatus for detecting electromagnetic self-compatibility risks in a vehicle. Background Technology

[0002] According to the requirements of international and domestic standards committees for automotive EMC performance and the consistent practices of the automotive EMC industry, the focus on vehicle-level EMC performance can be divided into three parts: the vehicle's external radiated emissions level, the vehicle's resistance to external interference, and the self-compatibility performance between the vehicle's electrical systems. Among these, the focus on the vehicle's external radiated emissions level stems from the requirement to protect external receivers, rather than the electrical systems inside the vehicle, and is a mandatory regulatory requirement in automotive development. The vehicle's resistance to external interference is the standard for evaluating whether the vehicle's electrical equipment can work normally in a strong interference environment, and has always been valued by the industry, and is a mandatory regulation in domestic regulations.

[0003] With the development of automotive electrification and electric vehicles, the number of onboard electrical components is increasing, and the systems are becoming more complex. The superposition and coupling of signals from various electrical systems have significantly increased the number of electromagnetic faults in vehicles. Therefore, various automakers and national standards are strengthening the testing and verification of the electromagnetic compatibility (EMC) of the entire vehicle. During testing, it has been found that some self-compatibility issues, due to factors such as vehicle layout, wiring harness collinearity, wiring harness power distribution, and grounding distribution, cannot be improved simply by modifying individual components. However, due to the complexity and phased requirements of automotive design, completely redesigning the entire vehicle layout and wiring harnesses to address these unresolvable electromagnetic problems is extremely costly and severely impacts the overall vehicle development schedule. Therefore, this paper proposes a forward design analysis and evaluation method for vehicle EMC during the automotive design and development process. This method identifies design problems in advance from the perspective of vehicle EMC self-compatibility, reducing subsequent testing issues and design rework, and accelerating vehicle development. Summary of the Invention

[0004] This invention provides a method and apparatus for detecting electromagnetic self-compatibility risks in vehicles, thereby improving the accuracy of vehicle self-compatibility risk detection.

[0005] To achieve the above technical objectives, the present invention provides a method for detecting electromagnetic self-compatibility risks in a vehicle, comprising:

[0006] The components of the vehicle are classified according to their electromagnetic compatibility characteristics to obtain sensitive source components and interference source components; wherein, the sensitive source components include several categories of sensitive source components divided into a first subclass, and the interference source components include several categories of interference source components divided into a second subclass.

[0007] Acquire the arrangement information of the vehicle-sensitive source components and the interference source components in the vehicle, the arrangement information including spatial arrangement information, wiring harness collinearity arrangement information, power supply and grounding arrangement information;

[0008] Based on the arrangement information, generate the arrangement self-compatibility risk detection results for the sensitive source components and the interference source components, the self-compatibility risk detection results for the wire harness collinearity, and the self-compatibility risk detection results for the wire harness power distribution and grounding distribution, respectively.

[0009] Based on the self-compatibility risk detection results of the arrangement of sensitive source components and interference source components, the self-compatibility risk detection results of wiring harness collinearity, and the self-compatibility risk detection results of wiring harness power distribution and grounding distribution, the self-compatibility risk detection results of the whole vehicle are obtained.

[0010] This invention first classifies components based on their electromagnetic compatibility characteristics into sensitive source components and interference source components, providing component support for subsequent risk monitoring. It further classifies these sensitive source and interference source components to enable risk monitoring of various automotive components. This allows for more detailed testing before vehicle assembly, improving accuracy, and also tests the self-compatibility of all automotive components, enhancing the completeness of the testing and avoiding the need for retesting and increased workload later. Then, by obtaining the layout information of the sensitive source and interference source components, including spatial layout information, wiring harness collinearity information, and power supply information... The system includes grounding layout information. This information is used to detect the self-compatibility risks of sensitive source components and interference source components, including risks related to wiring harness collinearity and wiring harness power distribution and grounding distribution. This allows for accurate identification of whether risks exist in sensitive source components and interference source components, as well as the problems causing these risks, thus improving detection accuracy. Based on the detection results of these risks, the system obtains the overall vehicle self-compatibility risk detection results. This enables early identification of potential risks, reduces subsequent testing issues, accelerates vehicle development, and shortens the development cycle.

[0011] As a preferred example, the spatial arrangement information in obtaining the arrangement information of the vehicle-sensitive source components and the interference source components in the vehicle specifically includes:

[0012] The spatial arrangement information of sensitive source components and disturbance source components in the vehicle is obtained through the 3D digital model design file of the whole vehicle;

[0013] The spatial arrangement information includes the spatial distance between each sensitive source component in the sensitive source component category, which is divided into a first subclass, and the interference source component in the interference source component category, which is divided into a first subclass. Each type of interference source component corresponds to several types of sensitive source components, thus obtaining several spatial distances.

[0014] This invention can accurately obtain the layout of the vehicle's components and their corresponding spatial distances through the vehicle's 3D digital model design file, saving inspection time. At the same time, the obtained spatial distances include multiple spatial distances for each type of interference source component and each type of sensitive source component, ensuring the comprehensiveness of the inspection and improving the accuracy of the inspection.

[0015] As a preferred example, the step of generating the layout self-compatibility risk detection results for the sensitive source type components and the interference source type components based on the layout information specifically includes:

[0016] Several spatial distance thresholds for the interference source components and the sensitive source components are obtained through the radiated emission test reports of the interference source components; the several spatial distance thresholds include the spatial distance thresholds for each type of interference source component in the interference source category and each type of sensitive source component in the sensitive source component, with one type of interference source corresponding to several types of sensitive sources;

[0017] By determining whether the spatial distance between each type of sensitive source component in the sensitive source component and each type of disturbance source component in the disturbance source component is greater than its corresponding spatial distance threshold;

[0018] If so, then there is no risk of layout incompatibility between the sensitive source components and the disturbance source components;

[0019] If not, then the sensitive source components and the disturbance source components are subject to layout self-compatibility risks, and the problems existing in the layout self-compatibility are recorded.

[0020] This invention obtains spatial distance thresholds from radiated emission test reports of the aforementioned interference source components, enabling precise avoidance of the interference source's impact on sensitive sources. Simultaneously, the radiated emission test reports provide accurate data for the detection method offered by this invention, improving detection accuracy. Furthermore, this invention sets spatial distance thresholds for each type of interference source component and its corresponding several types of sensitive source components based on the radiated emission test reports, ensuring comprehensive detection, avoiding data omissions, and further improving detection accuracy. Then, by determining whether the obtained spatial distance is greater than a preset spatial distance threshold, the invention obtains detection results regarding the self-compatibility risk of the arrangement of the sensitive source components and interference source components. The spatial distance includes the spatial distance of each type of interference source component and its corresponding several types of sensitive source components, resulting in a wide detection range and high accuracy of the obtained detection results. Additionally, if a self-compatibility risk exists, the problem causing the risk is recorded for subsequent review and modification, accelerating vehicle development.

[0021] As a preferred example, the wiring harness collinearity information in obtaining the arrangement information of the vehicle-wide sensitive source components and the interference source components in the vehicle specifically includes:

[0022] The collinear arrangement information of sensitive source components and interference source components in the vehicle is obtained through the vehicle wiring harness design drawings;

[0023] The collinear arrangement information includes the collinear length of each sensitive source component in the sensitive source component category divided into a first subclass and each interference source component in the interference source component category divided into a first subclass. Each type of interference source component corresponds to several types of sensitive source components, thus obtaining several collinear lengths.

[0024] This invention can accurately obtain the wiring harness layout of the vehicle's components and their corresponding collinear lengths using the vehicle wiring harness design drawings, saving inspection time. At the same time, the obtained collinear lengths include multiple collinear lengths for each type of interference source component and each type of sensitive source component, ensuring comprehensiveness of inspection and improving inspection accuracy.

[0025] As a preferred example, the step of generating the harness collinearity self-compatibility risk detection result for the sensitive source component and the interference source component based on the arrangement information specifically includes:

[0026] Based on the harness conducted radiation level test report and self-compatibility test report of the interference source component, several collinear length thresholds of the interference source component and the sensitive source component are determined; the several collinear length thresholds include the spatial distance threshold of each type of interference source component in the interference source component and each type of sensitive source component in the sensitive source component, with one type of interference source corresponding to several types of sensitive sources.

[0027] By determining whether the collinear length of each type of sensitive source component in the sensitive source component and each type of disturbance source component in the disturbance source component is less than its corresponding collinear length threshold;

[0028] If so, then there is no risk of wire harness collinearity between the sensitive source components and the interference source components;

[0029] If not, then the sensitive source components and the interference source components have a risk of wire harness collinearity self-compatibility, and the problem of wire harness collinearity self-compatibility is recorded.

[0030] This invention obtains the collinearity length threshold through the conducted radiation level test report and self-compatibility test report of the interference source components, which can accurately avoid the influence of the interference source on the sensitive source. Simultaneously, the conducted radiation level test report and self-compatibility test report provide accurate data for the detection method provided by this invention, improving the detection accuracy. The self-compatibility test report is a past self-compatibility test report of the interference source components. Furthermore, this invention sets up each type of interference source component and its corresponding several types of sensitive source components based on the conducted radiation level test report and self-compatibility test report. The collinear length threshold ensures the comprehensiveness of the detection, avoids missing data, and further improves the accuracy of the detection. By judging whether the obtained collinear length is greater than the preset collinear length threshold, the detection result of the risk of wiring harness collinearity self-compatibility for sensitive source components and interference source components is obtained. The collinear length includes the collinear length of each type of interference source component and its corresponding several types of sensitive source components, which has a wide detection range and high accuracy of the obtained detection results. At the same time, if there is a risk of wiring harness collinearity self-compatibility, the problem that causes the risk is recorded, which is convenient for subsequent review and modification, thus accelerating the vehicle development progress.

[0031] As a preferred example, the power supply and grounding arrangement information in obtaining the arrangement information of the vehicle-sensitive source components and the interference source components in the vehicle specifically includes:

[0032] The power supply and grounding layout information of sensitive source components and interference source components in the vehicle are obtained by using the vehicle power distribution diagram and grounding distribution diagram;

[0033] The power supply and grounding arrangement information includes the power allocation of the sensitive source components and the interference source components, and the grounding distance between each sensitive source component in the sensitive source component class divided into a first subclass and each interference source component in the interference source component class divided into a first subclass. Each type of interference source component corresponds to several types of sensitive source components, and several grounding distances are obtained.

[0034] This invention can accurately obtain the power distribution of the vehicle's components and the grounding distance of the sensitive source components and the interference source components by using the vehicle power distribution diagram and grounding distribution diagram, saving detection time. At the same time, the obtained grounding distance includes multiple grounding distances for each type of interference source component and each type of sensitive source component, ensuring the comprehensiveness of the detection and improving the accuracy of the detection.

[0035] As a preferred example, the step of generating self-compatibility risk detection results for the wiring harness power distribution and grounding distribution of the sensitive source components and interference source components based on the arrangement information specifically includes:

[0036] By analyzing the conducted radiation levels of the wiring harnesses of the interference source components and the self-compatibility test reports, the power allocation requirements and grounding distance thresholds for the interference source components and the sensitive source components are obtained; the power allocation requirements are that the interference source components are equipped with separate power fuses, and the sensitive source components and the interference source components cannot share fuses;

[0037] By determining whether the grounding distance between the sensitive source component and the interference source component is greater than their corresponding grounding distance threshold;

[0038] If the grounding distance is greater than the grounding distance threshold and the power distribution meets the power distribution requirements, then there is no risk of self-compatibility in the power distribution and grounding distribution of the sensitive source components and the interference source components.

[0039] If the grounding distance is less than or equal to the grounding distance threshold or the power distribution does not meet the power distribution requirements, then the sensitive source components and the interference source components have a risk of self-compatibility in the power distribution and grounding distribution of the wiring harness, and the problem of self-compatibility in the power distribution and grounding distribution of the wiring harness is recorded.

[0040] This invention obtains power allocation requirements and grounding distance thresholds from the conducted radiation level test reports and self-compatibility test reports of the aforementioned interference source components. This allows for precise avoidance of the interference source's impact on sensitive sources. The self-compatibility test reports are past self-compatibility test reports of the interference source components. Furthermore, the conducted radiation level test reports and self-compatibility test reports provide accurate data for the detection method provided by this invention, improving its accuracy. Additionally, this invention sets the power allocation and grounding distance for each type of interference source component and its corresponding several types of sensitive source components based on the conducted radiation level test reports and self-compatibility test reports, ensuring... The comprehensiveness of the detection process avoids missing data and further improves the accuracy of the detection. It also determines whether the obtained power distribution meets preset power distribution requirements and whether the grounding distance is less than a preset grounding distance threshold. This yields the detection results for the self-compatibility risks of the wiring harness power distribution and grounding distribution for sensitive source components and interference source components. The grounding distance includes the grounding distance of interference source components and their corresponding sensitive source components. The detection range is wide, and the obtained detection results are highly accurate. Furthermore, if there are self-compatibility risks in the wiring harness power distribution and grounding distribution, the problems causing these risks are recorded for easy review and modification later, thus accelerating the vehicle development process.

[0041] As a preferred example, the classification of the sensitive source components to obtain several categories of sensitive source components, and the classification of the interference source components to obtain several categories of interference source components, specifically includes:

[0042] The component list is obtained by the vehicle electrical configuration list. The components of the vehicle are classified according to the voltage level to obtain the interference source components and the sensitive source components. Then, the interference source components and the sensitive source components are classified into interference source category 1, interference source category 2, sensitive source category 1, and sensitive source category 2 according to their functions.

[0043] The first category of interference sources includes high-voltage components for new energy sources and low-voltage motor components;

[0044] The two types of interference sources include low-voltage power amplifier components and controller components with inductive loads;

[0045] The sensitive source category 1 includes sensor components related to safety, controller components related to safety but without inductive load, radio frequency antenna components, and user experience components;

[0046] The two types of sensitive sources include sensor components that do not involve safety and controller components that do not involve safety or carry inductive loads.

[0047] This invention provides a component classification method. First, a list of components is obtained from the vehicle's electrical configuration list. Second, the components are classified into interference sources and sensitive sources, saving detection time. At the same time, further classification is performed by analyzing the functions of the components, which further expands the scope of component self-compatibility testing and improves the accuracy of testing.

[0048] On the other hand, the present invention provides a whole vehicle electromagnetic self-compatibility risk detection device, including: a classification module, an arrangement module, an analysis module and a detection module;

[0049] The classification module is used to classify the components of the vehicle according to the voltage level to obtain sensitive source components and interference source components; wherein, the sensitive source components include several categories of sensitive source components divided into a first subclass, and the interference source components include several categories of interference source components divided into a second subclass.

[0050] The arrangement module is used to obtain the arrangement information of the vehicle sensitive source components and the interference source components in the vehicle. The arrangement information includes spatial arrangement information, wiring harness collinearity arrangement information, and power supply and grounding arrangement information.

[0051] The analysis module is used to generate, based on the layout information, layout self-compatibility risk detection results for sensitive source components and interference source components, self-compatibility risk detection results for wire harness collinearity, and self-compatibility risk detection results for wire harness power distribution and grounding distribution.

[0052] The detection module is used to obtain the self-compatibility risk detection results of the whole vehicle based on the self-compatibility risk detection results of the arrangement of the sensitive source components and the interference source components, the self-compatibility risk detection results of the wiring harness collinearity, and the self-compatibility risk detection results of the wiring harness power distribution and grounding distribution.

[0053] This invention first classifies components based on their electromagnetic compatibility characteristics using a classification module, categorizing them into sensitive source components and interference source components. This provides component support for subsequent risk monitoring. Furthermore, it further classifies these sensitive source and interference source components to perform risk monitoring on automotive parts. This allows for more detailed testing before vehicle assembly, improving accuracy, and also tests the self-compatibility of all automotive components, enhancing the completeness of the testing and preventing the need for retesting later, which would increase workload. Then, a layout module obtains the layout information of the sensitive source and interference source components. This layout information includes spatial layout information, wiring harness collinearity information, and power and grounding layout. The system first obtains layout information, and then, through an analysis module, detects the self-compatibility risks of sensitive source components and interference source components, including layout self-compatibility risks, wiring harness collinearity self-compatibility risks, and wiring harness power distribution and grounding distribution self-compatibility risks. This accurately determines whether the sensitive source components and interference source components have risks and the problems that cause these risks, improving detection accuracy. Then, through a detection module, the system obtains the overall vehicle self-compatibility risk detection results based on the layout self-compatibility risk detection results, wiring harness collinearity self-compatibility risk detection results, and wiring harness power distribution and grounding distribution self-compatibility risk detection results. This allows for the early detection of potential risks, reducing subsequent testing problems, accelerating vehicle development progress, and shortening the development cycle.

[0054] As a preferred example, the arrangement module includes a spatial arrangement unit, a wire harness collinear arrangement unit, and a power supply and grounding arrangement unit.

[0055] The spatial arrangement unit is used to obtain the spatial arrangement information of sensitive source components and disturbance source components in the whole vehicle through the whole vehicle 3D digital model design file; the spatial arrangement information includes the spatial distance between each sensitive source component divided into a first subclass and each disturbance source component divided into a first subclass in the sensitive source component category, and each disturbance source component corresponds to several sensitive source components, thus obtaining several spatial distances.

[0056] The wiring harness collinear arrangement unit is used to obtain the collinear arrangement information of sensitive source components and interference source components in the whole vehicle through the whole vehicle wiring harness design drawings; the collinear arrangement information includes the collinear length of each sensitive source component divided into a first subclass and each interference source component divided into a first subclass, and each interference source component corresponds to several sensitive source components, thus obtaining several collinear lengths;

[0057] The power supply and grounding arrangement unit is used to obtain the power supply and grounding arrangement information of sensitive source components and interference source components in the whole vehicle through the whole vehicle power distribution diagram and grounding distribution diagram; the power supply and grounding arrangement information includes the power distribution of the sensitive source components and the interference source components and the grounding distance between each sensitive source component divided into a first subclass and each interference source component divided into a first subclass, with each type of interference source component corresponding to several types of sensitive source components, thus obtaining several grounding distances.

[0058] This invention obtains the arrangement information of the sensitive source components and the interference source components through spatial arrangement units, wiring harness collinear arrangement units, and power supply and grounding arrangement units, based on the vehicle 3D digital model design documents, vehicle wiring harness design drawings, and vehicle power distribution diagram and grounding distribution diagram. This saves testing time. At the same time, the obtained arrangement information includes multiple spatial distances, collinear lengths, and grounding distances for each type of interference source component and each type of sensitive source component, ensuring the comprehensiveness of the testing and improving the accuracy of the testing. Attached Figure Description

[0059] Figure 1 This is a flowchart illustrating a method for electromagnetic self-compatibility testing of a vehicle according to an embodiment of the present invention.

[0060] Figure 2 : A schematic diagram of the structure of a vehicle electromagnetic self-compatibility testing device provided in an embodiment of the present invention;

[0061] Figure 3 : A flowchart illustrating a vehicle electromagnetic self-compatibility testing method according to another embodiment of the present invention. Detailed Implementation

[0062] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0063] Example 1

[0064] Please refer to Figure 1 This is a flowchart illustrating a vehicle electromagnetic self-compatibility testing method according to an embodiment of the present invention, which mainly includes steps 101 to 104, specifically including:

[0065] Step 101: Classify the components of the vehicle according to their electromagnetic compatibility characteristics to obtain sensitive source components and interference source components.

[0066] In this embodiment, the specific steps are as follows: A component list is obtained through the vehicle electrical configuration list; the vehicle components are classified according to voltage level to obtain interference source components and sensitive source components; then, based on the functions of the interference source components and the sensitive source components, they are categorized into interference source category 1, interference source category 2, and sensitive source category 1 and sensitive source category 2. Interference source category 1 includes new energy high-voltage components and low-voltage motor components; interference source category 2 includes low-voltage power amplifier components and controller components with inductive loads; sensitive source category 1 includes safety-related sensor components, safety-related controller components without inductive loads, radio frequency antenna components, and user experience components; sensitive source category 2 includes sensor components not related to safety and controller components not related to safety and without inductive loads.

[0067] Step 102: Obtain the arrangement information of the vehicle-sensitive source components and the interference source components in the vehicle. The arrangement information includes spatial arrangement information, wiring harness collinearity arrangement information, and power supply and grounding arrangement information.

[0068] In this embodiment, the specific steps are as follows: First, obtain the spatial arrangement information of sensitive source components and interference source components in the vehicle through the vehicle's 3D digital model design file. The spatial arrangement information includes the spatial distance between each sensitive source component (divided into a first subclass) and each interference source component (divided into a first subclass), with each type of interference source component corresponding to several types of sensitive source components, thus obtaining several spatial distances. Second, obtain the collinear arrangement information of sensitive source components and interference source components in the vehicle through the vehicle's wiring harness design drawings. The collinear arrangement information includes the collinear length between each sensitive source component (divided into a first subclass) and each interference source component (divided into a first subclass), with each type of interference source component corresponding to several types of sensitive source components, thus obtaining several collinear lengths. Third, obtain the power supply and grounding arrangement information of sensitive source components and interference source components in the vehicle through the vehicle's power distribution diagram and grounding distribution diagram.

[0069] The power supply and grounding arrangement information includes the power allocation of the sensitive source components and the interference source components, and the grounding distance between each sensitive source component (divided into a first subclass) and each interference source component (divided into a first subclass). Each type of interference source component corresponds to several types of sensitive source components, thus obtaining several grounding distances.

[0070] Step 103: Based on the layout information, generate the layout self-compatibility risk detection results for the sensitive source components and the interference source components, the wiring harness collinearity self-compatibility risk detection results, and the wiring harness power distribution and grounding distribution self-compatibility risk detection results, respectively.

[0071] In this embodiment, the step specifically involves: obtaining several spatial distance thresholds for the interference source components and the sensitive source components through the radiated emission test report of the interference source components; the several spatial distance thresholds include the spatial distance threshold for each type of interference source component in the interference source category and each type of sensitive source component in the sensitive source category, with one type of interference source corresponding to several types of sensitive sources; determining whether the spatial distance between each type of sensitive source component in the sensitive source category and each type of interference source component in the interference source category is greater than its corresponding spatial distance threshold; if yes, then there is no risk of self-compatibility in the arrangement of the sensitive source components and the interference source components; if no, then there is a risk of self-compatibility in the arrangement of the sensitive source components and the interference source components, and recording the problem of the self-compatibility in the arrangement. Based on the harness conducted radiation level test report and self-compatibility test report of the interference source components, several collinearity length thresholds for the interference source components and the sensitive source components are determined. These several collinearity length thresholds include the spatial distance threshold between each type of interference source component in the interference source category and each type of sensitive source component in the sensitive source category, with one type of interference source corresponding to several types of sensitive sources. The collinearity length of each type of sensitive source component in the sensitive source category and each type of interference source component in the interference source category is determined to be less than its corresponding collinearity length threshold. If yes, there is no risk of harness collinearity self-compatibility between the sensitive source components and the interference source components; otherwise, there is a risk of harness collinearity self-compatibility between the sensitive source components and the interference source components, and the problem of harness collinearity self-compatibility is recorded. By analyzing the conducted radiation levels of the wiring harnesses of the interference source components and past self-compatibility test reports, the power allocation requirements and grounding distance thresholds for the interference source components and the sensitive source components are obtained. The power allocation requirements are that each interference source component is equipped with its own power fuse, and the sensitive source components and the interference source components cannot share a fuse. By determining whether the grounding distance between the sensitive source components and the interference source components is greater than their corresponding grounding distance threshold, if the grounding distance is greater than the grounding distance threshold and the power allocation meets the power allocation requirements, then there is no self-compatibility risk in the wiring harness power allocation and grounding distribution of the sensitive source components and the interference source components. If the grounding distance is less than or equal to the grounding distance threshold or the power allocation does not meet the power allocation requirements, then there is a self-compatibility risk in the wiring harness power allocation and grounding distribution of the sensitive source components and the interference source components, and the problems existing in the self-compatibility of the wiring harness power allocation and grounding distribution are recorded.

[0072] Step 104: Based on the self-compatibility risk detection results of the arrangement of the sensitive source components and the interference source components, the self-compatibility risk detection results of the wiring harness collinearity, and the self-compatibility risk detection results of the wiring harness power distribution and grounding distribution, obtain the self-compatibility risk detection results of the entire vehicle.

[0073] In this embodiment, the step specifically involves: obtaining the overall vehicle self-compatibility test results based on the obtained layout self-compatibility risk detection results, wiring harness collinearity self-compatibility risk detection results, and wiring harness power distribution and grounding distribution self-compatibility risk detection results; and analyzing the self-compatibility risks existing in the vehicle based on the recorded problems.

[0074] Please refer to Figure 2 The diagram below shows a structural schematic of a vehicle electromagnetic self-compatibility testing device provided in an embodiment of the present invention. It mainly includes a classification module 201, an arrangement module 202, an analysis module 203, and a testing module 204.

[0075] The classification module 201 is used to classify the components of the vehicle according to the voltage level to obtain sensitive source components and interference source components; wherein, the sensitive source components include several categories of sensitive source components divided into a first subclass, and the interference source components include several categories of interference source components divided into a second subclass.

[0076] The arrangement module 202 is used to obtain the arrangement information of the vehicle sensitive source components and the interference source components in the vehicle. The arrangement information includes spatial arrangement information, wiring harness collinearity arrangement information, and power supply and grounding arrangement information.

[0077] The analysis module 203 is used to generate, based on the arrangement information, the arrangement self-compatibility risk detection results for the sensitive source components and the interference source components, the wiring harness collinearity self-compatibility risk detection results, and the wiring harness power distribution and grounding distribution self-compatibility risk detection results.

[0078] The detection module 204 is used to obtain the self-compatibility risk detection results of the whole vehicle based on the self-compatibility risk detection results of the arrangement of the sensitive source components and the interference source components, the self-compatibility risk detection results of the wiring harness collinearity, and the self-compatibility risk detection results of the wiring harness power distribution and grounding distribution.

[0079] In this embodiment, the arrangement module 202 includes a spatial arrangement unit, a wire harness collinear arrangement unit, and a power supply and grounding arrangement unit.

[0080] The spatial arrangement unit is used to obtain the spatial arrangement information of sensitive source components and disturbance source components in the whole vehicle through the whole vehicle 3D digital model design file; the spatial arrangement information includes the spatial distance between each sensitive source component divided into a first subclass and each disturbance source component divided into a first subclass, and each disturbance source component corresponds to several sensitive source components, thus obtaining several spatial distances.

[0081] The wiring harness collinear arrangement unit is used to obtain the collinear arrangement information of sensitive source components and interference source components in the whole vehicle through the whole vehicle wiring harness design drawings; the collinear arrangement information includes the collinear length of each sensitive source component divided into a first subclass and each interference source component divided into a first subclass, and each interference source component corresponds to several sensitive source components, thus obtaining several collinear lengths.

[0082] The power supply and grounding arrangement unit is used to obtain the power supply and grounding arrangement information of sensitive source components and interference source components in the whole vehicle through the whole vehicle power distribution diagram and grounding distribution diagram; the power supply and grounding arrangement information includes the power distribution of the sensitive source components and the interference source components and the grounding distance between each sensitive source component divided into a first subclass and each interference source component divided into a first subclass, with each type of interference source component corresponding to several types of sensitive source components, thus obtaining several grounding distances.

[0083] In this embodiment, the analysis module 203 includes a layout self-compatibility risk detection unit, a wire harness collinearity self-compatibility risk detection unit, and a wire harness power distribution and grounding distribution self-compatibility risk detection unit.

[0084] The arrangement self-compatibility risk detection unit is used to obtain several spatial distance thresholds for the interference source components and the sensitive source components through the radiated emission test reports of the interference source components. The several spatial distance thresholds include the spatial distance thresholds for each type of interference source component in the interference source category and each type of sensitive source component in the sensitive source category, with one type of interference source corresponding to several types of sensitive sources. The unit determines whether the spatial distance between each type of sensitive source component in the sensitive source category and each type of interference source component in the interference source category is greater than its corresponding spatial distance threshold. If yes, then the sensitive source components and interference source components do not have an arrangement self-compatibility risk; if no, then the sensitive source components and interference source components do have an arrangement self-compatibility risk, and the problem of arrangement self-compatibility is recorded.

[0085] The harness collinearity self-compatibility risk detection unit is used to determine several types of collinearity length thresholds for the interference source components and the sensitive source components based on the harness conducted radiation level test report and self-compatibility test report of the interference source components. These several types of collinearity length thresholds include a spatial distance threshold for each type of interference source component in the interference source category and each type of sensitive source component in the sensitive source category, with one type of interference source corresponding to several types of sensitive sources. The unit determines whether the collinearity length of each type of sensitive source component in the sensitive source category and each type of interference source component in the interference source category is less than its corresponding collinearity length threshold. If yes, then there is no harness collinearity self-compatibility risk for the sensitive source components and the interference source components; if not, then there is a harness collinearity self-compatibility risk for the sensitive source components and the interference source components, and the problem of harness collinearity self-compatibility is recorded.

[0086] The harness power distribution and grounding distribution self-compatibility risk detection unit is used to obtain the power distribution requirements and grounding distance thresholds for the interference source components and the sensitive source components by analyzing the conducted radiation levels of the interference source components and the self-compatibility test reports. The power distribution requirements are that the interference source components are equipped with their own power fuses, and the sensitive source components and the interference source components cannot share fuses. The unit determines whether the grounding distance between the sensitive source components and the interference source components is greater than their corresponding grounding distance thresholds. If the grounding distance is greater than the grounding distance threshold and the power distribution meets the power distribution requirements, then the sensitive source components and the interference source components do not have harness power distribution and grounding distribution self-compatibility risks. If the grounding distance is less than or equal to the grounding distance threshold or the power distribution does not meet the power distribution requirements, then the sensitive source components and the interference source components have harness power distribution and grounding distribution self-compatibility risks, and the unit records the problems existing in the harness power distribution and grounding distribution self-compatibility.

[0087] Example 2

[0088] Please refer to Figure 3 The above is a flowchart illustrating a vehicle electromagnetic self-compatibility testing method according to another embodiment of the present invention, which includes steps 301 to 305, mainly comprising:

[0089] Step 301: Classify the components of the vehicle according to their electromagnetic compatibility characteristics to obtain sensitive source components and interference source components.

[0090] In this embodiment, the specific steps are as follows: First, obtain the component list from the vehicle electrical configuration list; second, classify the components, i.e., divide them into interference sources and sensitive sources. The determination criteria are mainly as follows:

[0091] (1) First, confirm whether the component is a traditional low-voltage component or a new energy high-voltage component. If it is a new energy high-voltage component, it is directly identified as the interference source 1.

[0092] (2) For low-voltage components, confirm whether the component is a motor-type component (containing a motor inside). If so, it is identified as interference source 1; if it is a power amplifier or controller (with inductive load), it is identified as interference source 2.

[0093] (3) If low-voltage components are not classified as sources of disturbance but belong to sensors or controllers, then their importance needs to be classified. If they involve safety sensors and controllers (without inductive loads), radio frequency antennas (important), or user experience (audio and video), they are classified as sensitive source 1. If they do not involve safety sensors and controllers (without inductive loads), they are classified as sensitive source 2.

[0094] In this embodiment, the classification of sensitive source components and disturbance source components of the vehicle is shown in the following table:

[0095]

[0096]

[0097] Table 1 (Component Classification Table)

[0098] Step 302: Obtain the layout self-compatibility risk detection results of the entire vehicle.

[0099] In this embodiment, the specific steps are as follows: using the 3D digital model design file of the whole vehicle, obtain the spatial distance between sensitive source components and interference source components of the current vehicle; determine the spatial distance requirements of sensitive source components and interference source components in the whole vehicle based on the combined analysis of the spatial radiation level of interference sources and past test experience of self-compatibility; and obtain the layout self-compatibility risk detection result of the whole vehicle based on whether the spatial distance between sensitive source components and interference source components in the whole vehicle meets the spatial distance requirements.

[0100] In this embodiment, to avoid the self - compatibility problems caused by the spatial radiation coupling of each component, the spatial distance requirements between the sensitive source components and the harassment source components in the whole vehicle are determined according to the combined analysis of the spatial radiation level of the harassment source and the actual test experience of self - compatibility in previous tests. Due to the differences in the harassment intensity of different harassment sources and the susceptibility of different sensitive sources, the spatial distance requirements for different types of components are also inconsistent. This embodiment provides a detection method: Sensitive source 1 should be far away from harassment source 1 > A, sensitive source 1 should be far away from harassment source 2 > B, sensitive source 2 should be far away from harassment source 1 > C, sensitive source 2 should be far away from harassment source 2 > D, where it is required that A > B and C > D. In this embodiment, it is required that A = 150 mm, B = 100 mm, C = 100 mm, D = 50 mm, and the self - compatibility risk detection is carried out according to this layout. The verification table provided in this embodiment is as follows:

[0101]

[0102] Table 2 (Spatial distance verification table)

[0103] Step 303: Obtain the co - line self - compatibility risk detection result of the wiring harness of the whole vehicle.

[0104] In this embodiment, this step is specifically as follows: Analyze the co - line length of the sensitive source components and the harassment source components through the design drawings of the whole - vehicle wiring harness, determine the co - line length requirements of the sensitive source components and the harassment source components in the whole vehicle according to the combined analysis of the wiring harness conducted radiation level of the harassment source components and the actual test experience of self - compatibility in previous tests, and obtain the layout self - compatibility risk detection result of the whole vehicle according to whether the co - line length of the sensitive source components and the harassment source components in the whole vehicle meets the co - line length requirements.

[0105] In this embodiment, to avoid the self - compatibility problems caused by the wiring harness coupling of each component, the co - line length requirements of the sensitive source components and the harassment source components in the whole vehicle are determined according to the combined analysis of the spatial radiation level of the harassment source and the actual test experience of self - compatibility in previous tests. Due to the differences in the harassment intensity of different harassment source components and the susceptibility of different sensitive source components, the co - line requirements for different components are inconsistent. The present invention proposes a detection method: The co - line length of sensitive source 1 and harassment source 1 < a, the co - line length of sensitive source 1 and harassment source 2 < b, the co - line length of sensitive source 2 and harassment source 1 < c, the co - line length of sensitive source 2 and harassment source 2 < d, where it is required that a < b and c < d, and it is required that a = 300 mm, b = 600 mm, c = 600 mm, d = 1000 mm. The co - line self - compatibility risk detection is carried out according to this. The verification table provided in this embodiment is as follows:

[0106]

[0107] Table 3 (Wiring harness co - line verification table)

[0108] Step 304: Obtain the self-compatibility risk detection results of the power distribution and grounding distribution of the entire vehicle.

[0109] In this embodiment, the specific steps are as follows: The power distribution diagram and grounding distribution diagram of the entire vehicle are analyzed to determine the power distribution and grounding distance of sensitive source components and interference source components. Based on the combined analysis of the conducted radiation level of the wiring harness of interference source components and past test reports on self-compatibility, the power distribution requirements and grounding distance requirements of sensitive source components and interference source components in the entire vehicle are determined. The self-compatibility risk detection results of the power distribution and grounding distribution of the entire vehicle are obtained by judging whether the power distribution requirements and grounding distance of sensitive source components and interference source components in the entire vehicle meet the requirements.

[0110] In this embodiment, to avoid self-compatibility issues caused by the power distribution and grounding distribution of various components through wiring harnesses, the power distribution requirements and grounding distance requirements for sensitive source components and interference source components in the vehicle are determined based on the analysis of the spatial radiation level of interference sources and past experience in testing self-compatibility. Due to the differences in interference intensity of different interference sources and the susceptibility of different sensitive sources, the power distribution and power allocation of different components are also inconsistent. A detection method is proposed: interference source type 1 is equipped with a separate power fuse; sensitive sources do not share fuses with interference sources; sensitive sources should not share grounding points with interference sources; and the distance between the grounding point of sensitive sources and the grounding point of interference sources should be greater than X, requiring X = 100mm. The verification table provided in this embodiment is as follows:

[0111]

[0112] Table 4 (Verification Table for Power Distribution and Grounding Distribution of Wiring Harnesses)

[0113] Step 305: Obtain the self-compatibility risk detection results for the entire vehicle.

[0114] In this embodiment, the step specifically involves: obtaining the overall self-compatibility risk detection results of the vehicle by comprehensively considering the self-compatibility risk detection results of the arrangement of the interference source files and sensitive source files of the vehicle obtained in the above steps, the self-compatibility risk detection results of the wiring harness collinearity, and the self-compatibility risk detection results of the power distribution and grounding distribution.

[0115] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention for those skilled in the art.

Claims

1. A method for detecting electromagnetic self-compatibility risks in a vehicle, characterized in that, include: The components of the vehicle are classified according to their electromagnetic compatibility characteristics to obtain sensitive source components and interference source components; wherein, the sensitive source components include several categories of sensitive source components divided into a first subclass, and the interference source components include several categories of interference source components divided into a second subclass. The arrangement information of the sensitive source components and the interference source components in the vehicle is obtained. This arrangement information includes spatial arrangement information, wiring harness collinearity information, and power supply and grounding arrangement information. Specifically, the spatial arrangement information includes the spatial distance between each type of sensitive source component and each type of interference source component, with each type of interference source component corresponding to several types of sensitive source components, resulting in several spatial distances. The collinearity information includes the collinearity length between each type of sensitive source component and each type of interference source component, with each type of interference source component corresponding to several types of sensitive source components, resulting in several collinearity lengths. The power supply and grounding arrangement information includes the power distribution of the sensitive source components and the interference source components, and the grounding distance between each type of sensitive source component and each type of interference source component, with each type of interference source component corresponding to several types of sensitive source components, resulting in several grounding distances. Based on the layout information, layout self-compatibility risk detection results, wiring harness collinearity self-compatibility risk detection results, and wiring harness power distribution and grounding distribution self-compatibility risk detection results are generated for the sensitive source components and interference source components, respectively. Specifically, the spatial distance requirements for the sensitive source components and interference source components in the vehicle are obtained, and the layout self-compatibility risk detection results for the entire vehicle are obtained by determining whether each spatial distance of the sensitive source components and interference source components in the vehicle meets the spatial distance requirements; the wiring harness collinearity length requirements for the sensitive source components and interference source components in the vehicle are obtained, and the wiring harness collinearity self-compatibility risk detection results for the entire vehicle are obtained by determining whether each collinearity length of the sensitive source components and interference source components in the vehicle meets the collinearity length requirements; the power distribution requirements and grounding distance requirements for the sensitive source components and interference source components in the vehicle are obtained, and the power distribution and grounding distance requirements for each of the sensitive source components and interference source components in the vehicle are determined by determining whether each power distribution and grounding distance meets the power distribution requirements and grounding distance requirements. The grounding distance requirement is used to obtain the power distribution and grounding distribution self-compatibility risk detection results of the entire vehicle. Specifically, by analyzing the wiring harness conducted radiation level test reports and self-compatibility test reports of the interference source components, several collinear length thresholds for the interference source components and the sensitive source components are determined. It is then determined whether the collinear length of each type of sensitive source component and each type of interference source component is less than its corresponding collinear length threshold. If so, there is no wiring harness collinearity self-compatibility risk between the sensitive source components and the interference source components. By analyzing the wiring harness conducted radiation level and self-compatibility test reports of the interference source components, the power distribution requirements and grounding distance thresholds for the interference source components and the sensitive source components are obtained. It is then determined whether the grounding distance between the sensitive source components and the interference source components is greater than its corresponding grounding distance threshold. If the grounding distance is less than or equal to the grounding distance threshold or the power distribution does not meet the power distribution requirements, there is a wiring harness power distribution and grounding distribution self-compatibility risk between the sensitive source components and the interference source components, and the existing problems in the wiring harness power distribution and grounding distribution self-compatibility are recorded. Based on the self-compatibility risk detection results of the arrangement of sensitive source components and interference source components, the self-compatibility risk detection results of wiring harness collinearity, and the self-compatibility risk detection results of wiring harness power distribution and grounding distribution, the self-compatibility risk detection results of the whole vehicle are obtained.

2. The method for detecting electromagnetic self-compatibility risks in a vehicle as described in claim 1, characterized in that, The step of obtaining the arrangement information of the sensitive source components and the interference source components in the vehicle specifically includes: The spatial arrangement information of sensitive source components and disturbance source components in the vehicle is obtained through the 3D digital model design file of the whole vehicle.

3. The method for detecting electromagnetic self-compatibility risks in a vehicle as described in claim 1, characterized in that, The step of generating layout self-compatibility risk detection results for the sensitive source components and the interference source components based on the layout information specifically includes: Several spatial distance thresholds for the interference source components and the sensitive source components are obtained through the radiated emission test reports of the interference source components; the several spatial distance thresholds include the spatial distance thresholds for each type of interference source component in the interference source category and each type of sensitive source component in the sensitive source component, with one type of interference source corresponding to several types of sensitive sources; By determining whether the spatial distance between each type of sensitive source component in the sensitive source component and each type of disturbance source component in the disturbance source component is greater than its corresponding spatial distance threshold; If so, then there is no risk of layout incompatibility between the sensitive source components and the disturbance source components; If not, then the sensitive source components and the disturbance source components are subject to layout self-compatibility risks, and the problems existing in the layout self-compatibility are recorded.

4. The method for detecting electromagnetic self-compatibility risks in a vehicle as described in claim 1, characterized in that, The step of obtaining the wiring harness collinearity information in the arrangement information of the vehicle-wide sensitive source components and the interference source components in the vehicle specifically includes: Information on the collinear arrangement of sensitive source components and interference source components in the vehicle is obtained from the vehicle wiring harness design drawings.

5. The method for detecting electromagnetic self-compatibility risks in a vehicle as described in claim 1, characterized in that, The step of generating self-compatibility risk detection results for the arrangement of sensitive source components and interference source components, self-compatibility risk detection results for wire harness collinearity, and self-compatibility risk detection results for wire harness power distribution and grounding distribution based on the arrangement information specifically includes: The collinear length thresholds include the spatial distance thresholds for each type of interference source component in the interference source category and each type of sensitive source component in the sensitive source component, with one type of interference source corresponding to several types of sensitive sources; If not, then the sensitive source components and the interference source components have a risk of wire harness collinearity self-compatibility, and the problem of wire harness collinearity self-compatibility is recorded.

6. The method for detecting electromagnetic self-compatibility risks in a vehicle as described in claim 1, characterized in that, The acquisition of power supply and grounding information from the arrangement information of the vehicle-sensitive source components and the interference source components in the vehicle specifically includes: The power supply and grounding layout information of sensitive source components and interference source components in the vehicle are obtained by using the vehicle power distribution diagram and grounding distribution diagram.

7. The method for detecting electromagnetic self-compatibility risks in a vehicle as described in claim 1, characterized in that, The step of generating self-compatibility risk detection results for the arrangement of sensitive source components and interference source components, self-compatibility risk detection results for wire harness collinearity, and self-compatibility risk detection results for wire harness power distribution and grounding distribution based on the arrangement information specifically includes: The power distribution requirements stipulate that each interference source component must be equipped with its own power fuse, and the sensitive source components and the interference source components cannot share a fuse. If the grounding distance is greater than the grounding distance threshold and the power distribution meets the power distribution requirements, then there is no risk of self-compatibility in the power distribution and grounding distribution of the sensitive source components and the interference source components.

8. The method for detecting electromagnetic self-compatibility risks in a vehicle as described in claim 1, characterized in that, The process of classifying the sensitive source components to obtain several categories of sensitive source components, and classifying the interference source components to obtain several categories of interference source components, specifically includes: The component list is obtained by the vehicle electrical configuration list. The components of the vehicle are classified according to the voltage level to obtain the interference source components and the sensitive source components. Then, the interference source components and the sensitive source components are classified into interference source category 1, interference source category 2, sensitive source category 1, and sensitive source category 2 according to their functions. The first category of interference sources includes high-voltage components for new energy sources and low-voltage motor components; The two types of interference sources include low-voltage power amplifier components and controller components with inductive loads; The sensitive source category 1 includes sensor components related to safety, controller components related to safety but without inductive load, radio frequency antenna components, and user experience components; The two types of sensitive sources include sensor components that do not involve safety and controller components that do not involve safety or carry inductive loads.

9. A vehicle electromagnetic self-compatibility risk detection device, characterized in that, include: Classification module, layout module, analysis module, and detection module; The classification module is used to classify the components of the vehicle according to the voltage level to obtain sensitive source components and interference source components; wherein, the sensitive source components include several categories of sensitive source components divided into a first subclass, and the interference source components include several categories of interference source components divided into a second subclass. The arrangement module is used to acquire the arrangement information of the vehicle's sensitive source components and interference source components within the vehicle. The arrangement information includes spatial arrangement information, wiring harness collinearity arrangement information, and power supply and grounding arrangement information. Specifically, the spatial arrangement information includes the spatial distance between each type of sensitive source component and each type of interference source component, with each type of interference source component corresponding to several types of sensitive source components, resulting in several spatial distances. The collinearity arrangement information includes the collinearity length between each type of sensitive source component and each type of interference source component, with each type of interference source component corresponding to several types of sensitive source components, resulting in several collinearity lengths. The power supply and grounding arrangement information includes the power distribution of the sensitive source components and interference source components, and the grounding distance between each type of sensitive source component and each type of interference source component, with each type of interference source component corresponding to several types of sensitive source components, resulting in several grounding distances. The analysis module is used to generate, based on the layout information, layout self-compatibility risk detection results for sensitive source components and interference source components, wiring harness collinearity self-compatibility risk detection results, and wiring harness power distribution and grounding distribution self-compatibility risk detection results for the vehicle. Specifically, it obtains the spatial distance requirements for sensitive source components and interference source components in the vehicle, and obtains the layout self-compatibility risk detection results for the entire vehicle by determining whether each spatial distance of the sensitive source components and interference source components in the vehicle meets the spatial distance requirements. The system determines the collinearity length requirement for wiring harnesses of sensitive source components and interference source components in the vehicle. This is achieved by judging whether the collinearity length of each wiring harness of the sensitive source components and interference source components in the vehicle meets the collinearity length requirement, thus obtaining the wiring harness collinearity self-compatibility risk detection result for the entire vehicle. Furthermore, the system obtains the power allocation requirements and grounding distance requirements for the sensitive source components and interference source components in the vehicle. This is achieved by judging whether the power allocation and grounding distance of each of the sensitive source components and interference source components in the vehicle meet the power allocation requirements. The summation of the grounding spacing requirements yields the self-compatibility risk detection results for the power distribution and grounding distribution of the entire vehicle; wherein, by analyzing the harness conducted radiation level test reports and self-compatibility test reports of the interference source components, several types of collinear length thresholds for the interference source components and the sensitive source components are determined; it is determined whether the collinear length of each type of sensitive source component and each type of interference source component in the interference source components is less than its corresponding collinear length threshold; if so, there is no harness collinearity self-compatibility risk between the sensitive source components and the interference source components; through analysis... Analyze the conducted radiation levels of the wiring harnesses of the interference source components and the self-compatibility test reports to obtain the power distribution requirements and grounding distance thresholds for the interference source components and the sensitive source components; determine whether the grounding distance between the sensitive source components and the interference source components is greater than their corresponding grounding distance thresholds; if the grounding distance is less than or equal to the grounding distance threshold or the power distribution does not meet the power distribution requirements, then the sensitive source components and the interference source components have a risk of self-compatibility in wiring harness power distribution and grounding distribution, and record the problems existing in the self-compatibility of wiring harness power distribution and grounding distribution; The detection module is used to obtain the self-compatibility risk detection results of the whole vehicle based on the self-compatibility risk detection results of the arrangement of the sensitive source components and the interference source components, the self-compatibility risk detection results of the wiring harness collinearity, and the self-compatibility risk detection results of the wiring harness power distribution and grounding distribution.

10. The vehicle electromagnetic self-compatibility risk detection device as described in claim 9, characterized in that, The arrangement module includes a spatial arrangement unit, a wire harness collinear arrangement unit, and a power supply and grounding arrangement unit. The spatial arrangement unit is used to obtain the spatial arrangement information of sensitive source components and disturbance source components in the whole vehicle through the whole vehicle 3D digital model design file; The wiring harness collinear arrangement unit is used to obtain the collinear arrangement information of sensitive source components and interference source components in the whole vehicle through the whole vehicle wiring harness design drawings; The power supply and grounding arrangement unit is used to obtain the power supply and grounding arrangement information of sensitive source components and interference source components in the vehicle through the vehicle power distribution diagram and grounding distribution diagram.

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