Electromagnetic interference positioning method and device, equipment and storage medium

Abstract

The invention discloses an electromagnetic interference positioning method, device and equipment and a storage medium, and relates to the technical field of vehicle electromagnetic interference testing, and the electromagnetic interference positioning method comprises the following steps: obtaining a preset test point according to a preset scanning area; controlling the mechanical arm to drive the antenna to perform detection according to the preset test point location to obtain a radiation interference surface; obtaining an interference curve according to the radiation interference surface, and determining a first interference source position according to the interference curve; updating the preset scanning area according to a preset scanning distance to obtain a target scanning area, and obtaining a second interference source position according to the target scanning area; and determining an interference source position set according to the first interference source position and the second interference source position, and completing electromagnetic interference positioning. The mechanical arm and the antenna are controlled to carry out electromagnetic interference testing to obtain an interference surface and an interference curve, so that the positions of a plurality of interference sources are accurately positioned, and efficient and accurate electromagnetic interference source positioning is realized.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle electromagnetic interference testing, and in particular to an electromagnetic interference positioning method, device, equipment and storage medium. Background Art

[0002] Electric vehicles integrate a large number of high-frequency electronic control systems, such as autonomous driving controllers, on-board battery management systems, and electronic control units, which may generate electromagnetic waves during operation. The electromagnetic environment inside and outside the vehicle is relatively complex, especially high-power electrical equipment and electromagnetic waves during charging, which can interfere with other sensitive electronic systems through radiation or coupling, causing system malfunctions and even endangering the safety of the vehicle.

[0003] Traditional battery interference testing requires the use of a professional vehicle electromagnetic compatibility laboratory to conduct electromagnetic interference testing. The vehicle must be tested in an anechoic chamber, and simulated antennas and specialized testing equipment must be used to analyze the vehicle's radiation interference and locate the source of interference. Traditional technology requires a professional laboratory environment and equipment, has high testing costs, and cannot achieve automated testing. The testing process is cumbersome and time-consuming, limiting its application in actual production.

[0004] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The main purpose of this application is to provide an electromagnetic interference positioning method, device, equipment and storage medium, aiming to solve the technical problem of how to perform low-cost and high-efficiency electromagnetic interference positioning testing without relying on a professional-grade vehicle electromagnetic compatibility laboratory.

[0006] To achieve the above object, the present application proposes an electromagnetic interference positioning method, which is applied to a frequency positioning test system, wherein the frequency positioning test system comprises: a mechanical arm and an antenna, wherein the mechanical arm and the antenna are connected via a coaxial cable; the method comprises:

[0007] According to the preset scanning area, obtain the preset test points;

[0008] According to the preset test points, the mechanical arm is controlled to drive the antenna to perform detection to obtain a radiation interference surface;

[0009] Obtaining an interference curve according to the radiation interference surface, and determining a position of a first interference source according to the interference curve;

[0010] updating the preset scanning area according to the preset scanning distance to obtain a target scanning area, and obtaining a second interference source position according to the target scanning area;

[0011] An interference source position set is determined according to the first interference source position and the second interference source position to complete electromagnetic interference positioning.

[0012] In one embodiment, the step of controlling the mechanical arm to drive the antenna to perform detection according to the preset test point to obtain the radiation interference surface includes:

[0013] According to the preset test points, the mechanical arm is controlled to drive the antenna to perform detection to obtain a radiation interference set;

[0014] Determining a target radiation interference point according to the radiation interference value in the radiation interference set;

[0015] A radiation interference surface is determined according to the target radiation interference point.

[0016] In one embodiment, the step of determining a target radiation interference point according to the radiation interference value in the radiation interference set includes:

[0017] According to the radiation interference set and the preset selection rule, an initial radiation interference point is obtained;

[0018] Perform a frequency sweep test according to the initial radiation interference point to obtain a target field strength frequency curve of the initial radiation interference point;

[0019] The target radiation interference point is determined according to the preset frequency limit and the target field strength frequency curve.

[0020] In one embodiment, the frequency positioning test system further comprises: a position sensor and an angle sensor, wherein the mechanical arm is connected to the position sensor and the angle sensor via the coaxial cable;

[0021] The step of determining the radiation interference surface according to the target radiation interference point comprises:

[0022] Based on the position sensor and the angle sensor, obtaining the target radiation interference point position of the target radiation interference point;

[0023] The radiation interference surface is determined according to the target radiation interference point position and a preset fitting strategy.

[0024] In one embodiment, the frequency positioning test system further includes: a signal amplifier, a spectrum analyzer and an oscilloscope, wherein the signal amplifier is connected to the mechanical arm via the coaxial cable, and the signal amplifier is connected to the spectrum analyzer and the oscilloscope via the coaxial cable;

[0025] The step of controlling the mechanical arm to drive the antenna to perform detection according to the preset test point to obtain a radiation interference set includes:

[0026] According to the preset test point, the mechanical arm is controlled to drive the antenna to perform detection to obtain a radiation interference signal;

[0027] sending the radiation interference signal to the signal amplifier so that the signal amplifier returns an amplified signal based on the radiation interference signal;

[0028] The amplified signal is sent to the spectrum analyzer and the oscilloscope, so that the spectrum analyzer and the oscilloscope return a radiation interference set based on the amplified signal.

[0029] In one embodiment, the step of obtaining an interference curve according to the radiation interference surface includes:

[0030] Controlling the mechanical arm to drive the antenna to perform detection according to the radiation interference surface to obtain a field strength value set;

[0031] Obtaining a target frequency point of the radiation interference surface according to a field strength threshold and the field strength value set;

[0032] A position coordinate is obtained according to the target frequency point, and an interference curve is obtained according to the position coordinate.

[0033] In one embodiment, the step of obtaining the position of the first interference source according to the interference curve includes:

[0034] Control the mechanical arm to drive the antenna to perform detection according to the interference curve to obtain a target field strength set;

[0035] Determining target frequency point coordinates according to the target field strength set;

[0036] The position of the first interference source is determined according to the target frequency coordinates.

[0037] In addition, to achieve the above-mentioned purpose, the present application also proposes an electromagnetic interference positioning device, which includes: an acquisition module, used to acquire a preset test point according to a preset scanning area;

[0038] A detection module, used to control the mechanical arm to drive the antenna to perform detection according to the preset test points to obtain a radiation interference surface;

[0039] A determination module, configured to obtain an interference curve according to the radiation interference surface, and determine a position of a first interference source according to the interference curve;

[0040] An updating module, configured to update the preset scanning area according to a preset scanning distance, obtain a target scanning area, and obtain a second interference source position according to the target scanning area;

[0041] A positioning module is used to determine an interference source position set according to the first interference source position and the second interference source position to complete electromagnetic interference positioning.

[0042] In addition, to achieve the above objectives, the present application also proposes an electromagnetic interference locating device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the electromagnetic interference locating method as described above.

[0043] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the electromagnetic interference locating method described above are implemented.

[0044] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the electromagnetic interference locating method as described above are implemented.

[0045] One or more technical solutions proposed in this application have at least the following technical effects:

[0046] By using a mechanical arm to control the antenna to move precisely in a preset area, collect electromagnetic interference data, and use a spectrum analyzer and an oscilloscope to analyze the data, the technical means of identifying areas with greater interference intensity in a relatively short time, further locating areas with greater interference intensity, and determining the specific location of the interference source solves the problem of quickly and accurately locating the electromagnetic interference source in a complex electromagnetic environment. Compared with the prior art, it achieves the effect of electromagnetic interference testing and positioning in an automated and low-cost manner without the need for a professional-level vehicle electromagnetic compatibility laboratory. The one or more technical solutions proposed in this application not only reduce the dependence on high-cost equipment and special sites, but also improve the flexibility and efficiency of the test, and significantly improve the convenience and economic benefits of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] 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.

[0048] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0049] Figure 1 A schematic diagram of a flow chart provided for the first embodiment of the electromagnetic interference positioning method of the present application;

[0050] Figure 2 A schematic diagram of a frequency positioning test system provided in Embodiment 1 of the electromagnetic interference positioning method of the present application;

[0051] Figure 3 A schematic diagram of an interference curve provided in Example 1 of the electromagnetic interference positioning method of the present application;

[0052] Figure 4 A schematic diagram of a cylindrical scanning dot matrix provided in Example 1 of the electromagnetic interference positioning method of the present application;

[0053] Figure 5 A schematic diagram of a flow chart provided for Embodiment 2 of the electromagnetic interference positioning method of the present application;

[0054] Figure 6 A schematic diagram of a spherical scanning dot matrix provided in Example 2 of the electromagnetic interference positioning method of the present application;

[0055] Figure 7 A schematic diagram of a field intensity frequency curve provided in Example 2 of the electromagnetic interference positioning method of the present application;

[0056] Figure 8 A schematic diagram of a simplified flow chart of an electromagnetic interference positioning method provided in Embodiment 2 of the present application;

[0057] Fig. 9 This is a schematic diagram of the module structure of the electromagnetic interference positioning device according to an embodiment of the present application;

[0058] Fig.10 Schematic diagram of the device structure of the hardware operating environment involved in the electromagnetic interference locating method in the embodiment of the present application.

[0059] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0060] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0061] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0062] The main solution of the embodiment of the present application is: according to the preset scanning area, obtain the preset test points; according to the preset test points, control the mechanical arm to drive the antenna to perform detection to obtain the radiation interference surface; according to the radiation interference surface, obtain the interference curve, and determine the first interference source position according to the interference curve; according to the preset scanning distance, update the preset scanning area to obtain the target scanning area, and obtain the second interference source position according to the target scanning area; determine the interference source position set according to the first interference source position and the second interference source position to complete the electromagnetic interference positioning.

[0063] In this embodiment, for the convenience of description, the following description is made by taking the identification of electromagnetic interference positioning equipment as the execution subject.

[0064] Since the existing technology does not rely on professional-level vehicle electromagnetic compatibility laboratories to conduct low-cost and high-efficiency electromagnetic interference positioning tests, this application provides a solution. By using a mechanical arm to control the antenna to move precisely in a preset area, collect electromagnetic interference data, and use a spectrum analyzer and an oscilloscope to analyze the data, the technical means of identifying areas with high interference intensity in a relatively short time, further locating in areas with high interference intensity, and determining the specific location of the interference source solves the problem of quickly and accurately locating the electromagnetic interference source in a complex electromagnetic environment. Compared with the existing technology, it achieves the effect of electromagnetic interference testing and positioning in an automated and low-cost manner without the need for a professional-level vehicle electromagnetic compatibility laboratory. One or more technical solutions proposed in this application not only reduce the dependence on high-cost equipment and special sites, but also improve the flexibility and efficiency of the test, and significantly improve the convenience and economic benefits of operation.

[0065] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, an electromagnetic interference positioning device, etc. The following takes the electromagnetic interference positioning device as an example to illustrate this embodiment and the following embodiments.

[0066] Based on this, the present application embodiment provides an electromagnetic interference positioning method, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the electromagnetic interference positioning method of the present application.

[0067] In this embodiment, the electromagnetic interference positioning method includes steps S10 to S50:

[0068] Step S10, obtaining preset test points according to the preset scanning area;

[0069] It should be noted that the preset scanning area refers to the area range obtained based on the preliminary test of radiation interference when locating the interference source, and the scanning range determined in combination with the preset scanning distance. This area is usually a spatial range where the interference source may be distributed, such as a sphere, plane or cylinder, and the scanning antenna is controlled by a robotic arm to collect signals point by point or piece by piece. For example, in the preliminary test, if the radiation intensity in a certain area is high, the area is designated as a preset scanning area for more accurate positioning. The preset scanning area can be determined based on the vehicle structure and high-risk areas identified before the electromagnetic interference test, which may include parts with dense electronic equipment or electromagnetically sensitive, such as the engine compartment, battery pack area, etc. The test points are specific locations within the preset scanning area. These points are selected based on pre-analyzed data and experience. The purpose is to cover all possible interference source locations to ensure that all potential electromagnetic interference is detected without blind spots.

[0070] It is understood that one or more scan areas are determined based on the purpose of the test and the specific needs of the vehicle. This usually involves a detailed assessment of the vehicle to identify possible high-risk areas, such as locations where electronic systems are concentrated or spaces around electromagnetically sensitive components. This step is based on a detailed analysis of the vehicle design, as well as previous test data and experience. After determining the preset scan area, the preset test points can be selected based on the scanning method.

[0071] Reference Figure 2 , Figure 2 Schematic diagram of a frequency positioning test system according to the first embodiment of the electromagnetic interference positioning method of the present application.

[0072] like Figure 2As shown in the figure, the manipulator is a device that performs scanning and antenna movement, and has six degrees of freedom, which is used to accurately control the position and direction of the antenna in three-dimensional space. The manipulator can move the antenna according to the spatial information of the radiation interference surface to reach the specified detection position, and at the same time, it combines the position sensor and the angle sensor to provide high-precision position information. For example, in the detection of radiation interference, the manipulator moves the antenna to multiple test points on the interference surface through the transmission mechanism to obtain field strength data. The antenna is used to capture electromagnetic signals, which are transmitted to the signal amplifier through coaxial cables. The function of the signal amplifier is to enhance these weak electromagnetic signals for further analysis and processing; the enhanced signal is sent to the spectrum analyzer and oscilloscope. The spectrum analyzer is used to analyze the frequency components of the signal to identify the frequency characteristics of the interference signal, and the oscilloscope is used to observe the time domain characteristics of the signal to analyze its waveform changes; the figure also includes a control / monitoring device, which is responsible for controlling the entire test process, including the motion control of the manipulator and the precise positioning of the antenna, as well as the monitoring and recording of the test data; all devices are connected using coaxial cables to optimize the quality of signal transmission and the accuracy of the test. This configuration allows the system to perform flexible and efficient EMI testing without relying on a professional EMI laboratory, thereby quickly and accurately locating the source of EMI, effectively reducing testing costs and improving production efficiency.

[0073] Step S20, controlling the mechanical arm to drive the antenna to perform detection according to the preset test points to obtain a radiation interference surface;

[0074] It should be noted that in the electromagnetic interference test, the radiation interference surface refers to the side with the most significant radiation interference identified after the six-degree-of-freedom robotic arm controls the antenna to detect within the preset test points during the scanning process of the preset scanning area. This side is selected from the entire spherical scanning area, and the characteristic is that the electromagnetic interference intensity on this side is more concentrated and significant than that in other areas.

[0075] It is understandable that the mechanical arm and the antenna work together to scan the preset scanning area and record the electromagnetic signals of the preset test points. By analyzing these data, the area with the highest electromagnetic interference intensity, that is, the radiation interference surface, can be identified.

[0076] Step S30, obtaining an interference curve according to the radiation interference surface, and determining the position of the first interference source according to the interference curve;

[0077] It should be noted that the interference curve is a linear or nonlinear curve generated by analyzing the trend of field strength value changes on the radiation interference surface, which is used to further accurately locate the radiation interference source. The interference curve reflects the intensity distribution of the radiation signal at a specific frequency and is often generated by a fitting method. The first interference source position is the spatial coordinates of a specific interference source located by the interference curve, which is used to describe the specific position of the interference source in the vehicle or surrounding space. This position is usually the point where the radiation signal intensity reaches the peak, which is further verified by near-field scanning and other methods.

[0078] It is understandable that by controlling the points scanned by the robotic arm along the radiation interference surface, the field strength data and spatial coordinate information of each point are obtained, and an interference curve is generated based on the field strength data. The interference curve is used to describe the intensity distribution and variation range of the radiation signal. Next, by analyzing the peak points on the interference curve, that is, the area where the signal strength reaches the maximum value, the coordinate data of these points are used to determine the spatial position of the first interference source. In order to further confirm the location of the interference source, a near-field scan of the area can be performed, and the final interference source location can be confirmed through more sophisticated tests.

[0079] In a feasible implementation, step S30 may include steps A31 to A33:

[0080] Step A31, controlling the mechanical arm to drive the antenna to perform detection according to the radiation interference surface to obtain a field strength value set;

[0081] It should be noted that the field strength value set is a set of radiation signal strength data obtained by detecting the radiation interference surface, which records the field strength value of each point on the radiation interference surface. The field strength value set is used to analyze the intensity distribution of the interference signal and provide basic data for determining the target frequency point and interference curve.

[0082] It can be understood that by controlling the robotic arm to move the antenna to multiple test points on the interference surface based on the reference information provided by the radiation interference surface, the radiation signal strength at each position is detected point by point, and these signal strength values ​​are recorded to form a field strength value set. Specifically, the robotic arm moves the antenna according to the spatial coordinate information of the radiation interference surface so that the antenna reaches different points on the interference surface; the antenna receives the radiation signal at each point, and transmits the signal to, for example, a spectrum analyzer and an oscilloscope through a signal amplifier to record the intensity value. These recorded data constitute a field strength value set for subsequent target frequency point analysis. For example, the antenna detects that the signal strengths of five points on the interference surface are 10dB, 12dB, 15dB, 9dB and 20dB, respectively, and these data constitute a field strength value set.

[0083] Step A32, obtaining a target frequency point of the radiation interference surface according to a field strength threshold and the field strength value set;

[0084] It should be noted that the field strength threshold is a strength standard used to determine whether the signal exceeds the standard, and is usually set according to the electromagnetic compatibility test requirements or industry standards. The field strength threshold divides the radiated signal into qualified signals and interference signals, and is an important basis for analyzing the target frequency point. For example, in a certain electromagnetic compatibility test, the field strength threshold may be set to 10dB. When the signal value in the field strength value set exceeds the threshold, the frequency point is identified as an interference frequency point. The target frequency point is a specific frequency point determined by analyzing the field strength value set and the field strength threshold. The radiation signal strength of this point exceeds the threshold, indicating the presence of an interference signal. The determination of the target frequency point is an important input for the subsequent location of the interference source.

[0085] It can be understood that each data point in the field strength value set is analyzed to find the signal strength that exceeds the field strength threshold; secondly, the frequency values ​​corresponding to these signal strengths are recorded as target frequencies. The target frequency reflects the characteristic frequency of the radiated interference signal and is used to guide the subsequent interference source location.

[0086] For example, the signal frequency of a certain point in the field strength value set is 2.4 GHz, and its strength is 12 dB, which exceeds the field strength threshold of 10 dB, and 2.4 GHz is confirmed as the target frequency point.

[0087] Step A33, obtaining position coordinates according to the target frequency point, and obtaining an interference curve according to the position coordinates.

[0088] It should be noted that the position coordinates refer to the specific position of the interference signal in space, which is used to describe the source position of the radiation signal strength corresponding to the target frequency point. The position coordinates are usually expressed in three-dimensional coordinates, such as X = 1.2 meters, Y = 0.8 meters, and Z = 1.5 meters, which are used to indicate the precise location of the interference source.

[0089] In addition, it should be noted that the interference curve is a signal strength change curve generated based on the target frequency point and its corresponding spatial position coordinates, which is used to analyze the distribution trend and source location of the interference signal. The interference curve is usually generated by a fitting method, such as a change curve obtained by fitting the signal strength data at different points.

[0090] It can be understood that the change in the radiation signal intensity of the area where the target frequency point is located is scanned by a mechanical arm, and the signal intensity and corresponding spatial coordinates of the target frequency point at different points are recorded; secondly, according to the signal intensity change trend of these coordinate points, the interference curve is generated by a fitting method. For example, the target frequency point is 2.4GHz, and the intensity and coordinates at different points are (10dB, X=1.2, Y=0.8, Z=1.5), (15dB, X=2.3, Y=1.4, Z=1.0), (20dB, X=3.0, Y=2.0, Z=1.2). By fitting the data of these points, an interference curve can be obtained, which is used to further analyze the distribution trend of the interference source.

[0091] Reference Figure 3 , Figure 3 This is a schematic diagram of an interference curve of the first embodiment of the electromagnetic interference positioning method of the present application.

[0092] like Figure 3 As shown, it includes a positioning antenna, a test point array and a line segment representing an interference curve. The antenna position is represented by a vertical line in the figure, which is located at the intersection of the X-axis and the Y-axis and extends upward, and is used to send or receive electromagnetic signals to the test area. The black dots in the figure represent preset test points, which are evenly distributed on the XY plane. Each point is a potential electromagnetic signal measurement location. These locations are systematically selected according to the description in the technical briefing book to fully cover the test area in order to capture possible interference signals. The red line segment in the figure runs from point P to point Q, representing the interference curve. This is the electromagnetic interference propagation path or the line with the highest intensity confirmed after analyzing the collected test data. It helps technicians determine the approximate direction or area of ​​the interference source.

[0093] In a feasible implementation, step S30 may include steps B31 to B33:

[0094] Step B31, controlling the mechanical arm to drive the antenna to perform detection according to the interference curve to obtain a target field strength set;

[0095] It should be noted that the target field strength set refers to the set of radiation signal strength data recorded after scanning and detecting the area indicated by the interference curve. This set only contains the field strength data of the target frequency point, reflecting the intensity distribution of the interference signal in the specified area. The generation of the target field strength set is an important basis for determining the coordinates of the target frequency point. For example, in the scanning of the target area, the detected target field strength set may include signal strength values ​​of multiple points, such as E1=18dB, E2=22dB, and E3=20dB.

[0096] It is understandable that the robot moves the antenna to the area with higher interference signal strength according to the guidance of the interference curve, detects the signal strength value point by point, and transmits the detection result to the measuring device for recording. The target field strength set only contains the field strength data of the target frequency indicated by the interference curve, reflecting the intensity distribution of the interference signal in space. For example, in the area indicated by the interference curve, the detected field strength data are 15dB, 18dB and 22dB, which constitute the target field strength set.

[0097] Step B32, determining the target frequency point coordinates according to the target field strength set;

[0098] It should be noted that the target frequency coordinates refer to the specific location of the target frequency in space, usually expressed in two-dimensional coordinate form. By analyzing the target field strength set, the peak point of the target frequency signal strength can be found and its corresponding spatial coordinates can be recorded. For example, in the test, by analyzing the target field strength set, it is found that the maximum value of the signal strength is located at X = 1.5 meters and Y = 0.8 meters, which is the target frequency coordinate.

[0099] It is understandable that the first interference source position is the specific position of the interference source in space determined by further analysis and verification of the target frequency coordinates. The first interference source position is usually the source point of the peak value of the interference signal strength, which is used to describe the specific spatial position of the interference signal. For example, through near-field scanning, it is confirmed that the signal strength peak of the target frequency comes from a controller inside the vehicle, with coordinates of X=1.2 meters and Y=0.6 meters. This position is the first interference source position.

[0100] Step B33, determining the position of the first interference source according to the target frequency coordinates.

[0101] It is understandable that by further analyzing the signal source of the target frequency coordinates, the specific location of the first interference source can be determined. The target frequency coordinates provide preliminary positioning information of the peak value of the interference signal intensity. Through further near-field scanning or signal strength analysis, the specific source point of the interference signal, that is, the location of the first interference source, can be confirmed. For example, after analyzing the target frequency coordinates (X = 1.5 meters, Y = 0.8 meters, Z = 1.2 meters), it is found that the source of the signal is a control module inside the vehicle, and its specific coordinates are X = 1.2 meters, Y = 0.6 meters, and Z = 1.0 meters. This point is the location of the first interference source.

[0102] Step S40, updating the preset scanning area according to the preset scanning distance to obtain a target scanning area, and obtaining a second interference source position according to the target scanning area;

[0103] It should be noted that the preset scanning distance refers to the distance between the robotic arm scanning antenna and the target area set in advance in order to conduct comprehensive and efficient interference signal detection during the interference source positioning process. This distance is determined by the intensity characteristics of the radiation interference and the measurement accuracy of the scanning equipment, and is usually measured in centimeters or meters. The purpose of the preset scanning distance is to ensure that the scanning coverage is appropriate, no interference signals are missed, and to avoid the collection of too much invalid data. For example, in the vehicle radiation interference positioning, the preset distance between the scanning antenna and the target surface may be set to 10 cm to evenly scan the target area.

[0104] In addition, it should be noted that the target scanning area is the final scanning range determined by moving the preset scanning distance on the basis of the preset scanning area, which is used to further accurately locate the spatial position of the radiation interference source. The target scanning area narrows the range of the preset scanning area and focuses on areas with higher interference signal strength to improve positioning accuracy. For example, in a vehicle radiation interference test, if the preset scanning area is a face of a cylinder, the scanning area redefined after controlling the robotic arm and antenna to move the preset scanning distance of 5 cm to a certain face of the cylinder is the target scanning area.

[0105] It can be understood that by translating the preset scanning area based on the preset scanning distance, a new scanning range is redefined to obtain the target scanning area. Subsequently, within the target scanning area, the scanning antenna is controlled by the robotic arm to further collect and analyze the radiation intensity signal to determine the position of the second interference source within the target area.

[0106] Exemplarily, the preset scanning area of ​​the second interference source position can be a cylinder. By taking the central axis of the cylinder as a reference, the antenna is controlled by the mechanical arm to move along the preset test points on the cylinder to form a uniformly distributed three-dimensional dot matrix test grid. During the scanning process, the connection between the mechanical arm and the scanning antenna is the center of the circle, and the scanning antenna is the line length as the radius. Scan each point on the ZOY plane. After the ZOY scan is completed, the antenna is translated along the direction of OX by a set distance such as 5cm, and the next plane is scanned. The scanning field strength of each point on the cylinder can be obtained, and the received signal is transmitted to the signal amplifier through a coaxial cable for amplification processing. The amplified signal is sent to the spectrum analyzer and oscilloscope for analysis respectively. The spectrum analyzer is used to generate frequency domain data of the cylindrical test point, for example, the field strength at the target frequency 2.4GHz is 20dB, and the oscilloscope provides time domain waveform data, for example, the signal amplitude change period of a certain point is 5ms. Through the precise movement of the mechanical arm and the high-sensitivity detection of the antenna, the radiation signal strength of all test points on the cylinder can be captured to generate a complete set of radiation interference. Subsequently, according to the signal strength values ​​recorded in the radiation interference set, the target radiation interference point with the highest radiation interference value is screened out in combination with the preset selection rules, and the target point is further subjected to a frequency sweep test to obtain the target field strength frequency curve. The cylindrical scanning method can fully cover the potential interference sources in the cylindrical area, and is particularly suitable for complex vehicle electronic system environments by capturing the electromagnetic signal distribution characteristics in multi-dimensional space.

[0107] Reference Figure 4 , Figure 4 A schematic diagram of a cylindrical scanning dot matrix according to the first embodiment of the electromagnetic interference positioning method of the present application.

[0108] like Figure 4 As shown in the figure, the black dots are distributed along the horizontal and vertical grids, forming a cylindrical three-dimensional grid, which represents the test points. This layout allows the robot to carry the antenna and move along the points on the cylinder to achieve all-round detection of vehicle electromagnetic interference. During the cylindrical scanning process, the robot positions the antenna at a preset test point, and then uses this point as the starting point and the antenna as the radius to detect the electromagnetic signal of the surface where the preset test point is located, thereby capturing the electromagnetic signal of each point. These signals are then transmitted to the spectrum analyzer and oscilloscope via coaxial cable to analyze the electromagnetic interference characteristics of these points.

[0109] Step S50: determining an interference source position set according to the first interference source position and the second interference source position, and completing electromagnetic interference positioning.

[0110] It should be noted that, in combination with the coordinate information of the first interference source position and the second interference source position, an interference source position set is summarized and formed as a key data set to describe the distribution of all interference sources. Through the interference source position set, the distribution law of the electromagnetic interference source can be fully understood, and the root source of the electromagnetic interference can be further determined. Specifically, this step includes the following operations: first, the coordinates of the first interference source position, such as X1, Y1, Z1, and the coordinates of the second interference source position, such as X2, Y2, Z2, are input into the interference source position set; secondly, the spatial distribution analysis of these positions is performed, for example, through data fitting or distribution model analysis, to determine whether multiple interference sources have spatial correlation; finally, according to the distribution information of the interference source position set, the electromagnetic interference positioning result of the entire test object is determined, thereby completing a comprehensive analysis of the interference source.

[0111] For example, in the electromagnetic interference test of electric vehicles, it is assumed that the position of the first interference source is determined to be X=1.2 meters, Y=0.8 meters, and Z=1.5 meters, and the position of the second interference source is X=2.3 meters, Y=1.4 meters, and Z=1.0 meters. By summarizing these two positions into the interference source position set and analyzing their spatial distribution patterns, it is found that both interference sources are concentrated in the high-voltage area on the left side of the vehicle. This positioning result shows that the high-voltage equipment on the left side of the vehicle may be the main source of interference, providing a clear direction for subsequent interference rectification. By summarizing the interference source position set, this step can fully grasp the distribution of all interference sources, thereby effectively improving the accuracy of electromagnetic interference positioning. Using the data analysis of the position set, the distribution pattern of the interference source can be found, which provides a scientific basis for optimizing equipment layout and reducing interference. In addition, this step can systematically solve the multi-source interference problem in a complex environment by integrating the spatial coordinates of multiple interference sources, thereby significantly improving the efficiency of testing and rectification.

[0112] This embodiment provides an electromagnetic interference positioning method, which effectively solves the technical problems of high dependence on professional laboratories, low detection efficiency and inability to realize automated testing in traditional test methods by introducing technical means such as high-precision mechanical arms, spectrum analyzers, oscilloscopes and signal amplifiers in electromagnetic interference positioning tests, combined with analysis methods such as preset scanning areas, target scanning areas and interference source position sets. In the implementation process, the mechanical arm controls the precise movement of the antenna in the preset test points and target areas to obtain the radiation interference signal and generate the radiation interference set, based on which the field strength analysis and interference frequency positioning are performed, and the radiation interference surface is generated in combination with the fitting algorithm, and the interference curve and the target interference source position are further determined; by comprehensively analyzing the distribution law of the first interference source and the second interference source, the interference source position set is summarized, so as to fully grasp the distribution characteristics of electromagnetic interference and finally realize fast and accurate interference source positioning. This technical solution achieves the beneficial effects of flexible configuration of test equipment, accurate data acquisition, low test cost and high positioning efficiency, especially in the absence of a professional laboratory environment, it can still meet the high-precision interference positioning requirements, thereby significantly improving the efficiency and reliability of testing and rectification work.

[0113] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can be referred to the above introduction, and will not be repeated in the following. Figure 5 , step S20 of the electromagnetic interference positioning method further includes steps S21 to S23:

[0114] Step S21, controlling the mechanical arm to drive the antenna to perform detection according to the preset test points to obtain a radiation interference set;

[0115] It should be noted that the radiation interference set is a set of all radiation signal data recorded after detecting the preset test points one by one. The radiation interference set contains the radiation intensity value of each test point and its corresponding spatial coordinates, which is an important basic data for subsequent analysis and positioning of interference points. For example, the radiation interference set may include the following data: the signal strength of point 1 is 10dB, the signal strength of point 2 is 15dB, the signal strength of point 3 is 20dB, etc.

[0116] It is understandable that the robotic arm moves the antenna to the specified position according to the spatial coordinates of the preset test point, detects the radiation signal strength of each point point by point, and records the signal strength data of all points to form a radiation interference set. The specific process is: the robotic arm moves in the order of the preset points. At each point, the antenna receives the radiation signal at that position and transmits the signal strength to the measuring device (such as a spectrum analyzer or oscilloscope). The robotic arm scans all preset points and fully records the radiation intensity values ​​of all points. For example, in the scan of 10 preset points, the detected radiation intensity data are 10dB, 12dB, 15dB, 9dB, etc., respectively. These data constitute the radiation interference set.

[0117] In a feasible implementation, step S21 may include steps S211 to S213:

[0118] Step S211, controlling the mechanical arm to drive the antenna to perform detection according to the preset test point to obtain a radiation interference signal;

[0119] It should be noted that the radiated interference signal is the electromagnetic radiation signal received by the antenna at the test point, reflecting the interference intensity and frequency characteristics of the location. These signals are the data basis received by the antenna and transmitted to the subsequent equipment for processing.

[0120] It is understandable that the robot arm accurately moves the antenna to a specified position according to the spatial coordinates of the preset test point and receives the radiation signal of the point. For example, after the six-degree-of-freedom robot arm moves to the preset test point, the antenna can scan a spherical scanning area with the connection point between the robot arm and the antenna as the center and the connection point and the scanning antenna reference point as the radius for detection.

[0121] Reference Figure 6 , Figure 6 This is a schematic diagram of a spherical scanning dot matrix according to the second embodiment of the electromagnetic interference positioning method of the present application.

[0122] like Figure 6As shown in the figure, the spherical structure consists of multiple black dots, which represent the test points that the robotic arm can move to, surrounding the center position of the antenna, which is the position indicated by the Z-axis arrow in the figure. The antenna transmits or receives electromagnetic signals at this center position, and the robotic arm carries the antenna along the spherical surface, covering each preset test point to ensure that electromagnetic interference can be detected from multiple angles and directions. The purpose of spherical scanning is to systematically detect the intensity and changes of the electromagnetic field in the space around a fixed point, which is critical for accurately locating the source of electromagnetic interference. In this way, technicians can determine the direction and intensity of the interference source, so as to effectively formulate countermeasures to reduce or eliminate the interference. Spherical scanning ensures the comprehensiveness and accuracy of the test results by providing full test coverage. It is particularly suitable for complex vehicle electronic systems and can capture interference sources that may be missed by conventional methods. The data obtained by spherical scanning can be used to analyze the propagation characteristics and sources of electromagnetic interference, further improving the electromagnetic compatibility design and performance of the vehicle.

[0123] Step S212, sending the radiation interference signal to the signal amplifier, so that the signal amplifier returns an amplified signal based on the radiation interference signal;

[0124] It should be noted that the amplified signal is a radiation interference signal that has been enhanced by a signal amplifier. Its intensity is higher than the original signal, which facilitates subsequent equipment to perform frequency analysis and time domain analysis.

[0125] It is understandable that the radiated interference signal received by the antenna is transmitted to the signal amplifier, which enhances the signal, generates an amplified signal and returns it to the subsequent analysis device. The specific operation is: after receiving the radiated interference signal, the signal amplifier amplifies its strength while maintaining the original frequency characteristics of the signal to facilitate more accurate frequency domain and time domain analysis.

[0126] Step S213: sending the amplified signal to the spectrum analyzer and the oscilloscope, so that the spectrum analyzer and the oscilloscope return a radiation interference set based on the amplified signal.

[0127] It is understandable that the amplified signal is transmitted to the spectrum analyzer and oscilloscope respectively. The spectrum analyzer performs frequency domain analysis on the signal, and the oscilloscope performs time domain analysis on the signal to generate and return the radiation interference set. The specific operation is: the spectrum analyzer analyzes the frequency distribution of the amplified signal and generates frequency domain data, such as the 2.4GHz signal strength is 20dB; the oscilloscope analyzes the time domain waveform of the amplified signal, such as the time period of the signal amplitude is 5ms. Finally, these data are integrated into the radiation interference set, which contains the frequency domain and time domain information of the radiation signal at the test point.

[0128] Exemplarily, steps S211 to S213 may be spherical dot scanning. According to the requirements of spherical scanning, the robot arm moves the antenna to each test point along the spherical path with a preset radius, with the antenna connection point as the center of the circle, receives the radiation signal strength at different points in the spherical area through the antenna, and converts the received signal into an electrical signal as a radiation interference signal. The radiation interference signal received by the antenna is transmitted to the signal amplifier through a coaxial cable, and the amplifier enhances the signal to increase its amplitude while maintaining the original frequency characteristics of the signal. The amplified signal is transmitted to the spectrum analyzer and oscilloscope respectively through a coaxial cable. The spectrum analyzer performs frequency domain analysis on the amplified signal and returns the frequency characteristics of each point. For example, the spectrum analyzer analyzes the amplified signal at the point X=1.2m, Y=0.8m, and Z=1.5m, showing that the intensity of the target frequency 2.4GHz is 20dB, and analyzes the amplified signal at the point X=1.5m, Y=1.0m, and Z=1.8m, showing that the intensity of the target frequency 2.4GHz is 22dB; the oscilloscope performs time domain analysis on the amplified signal and returns the characteristics of the amplitude of the signal waveform changing with time. For example, the oscilloscope shows that the signal amplitude change period at the point X=1.2m, Y=0.8m, and Z=1.5m is 5ms, and the signal amplitude change period at the point X=1.5m, Y=1.0m, and Z=1.8m is 4ms. These frequency domain and time domain data are integrated to form a radiation interference set for subsequent analysis.

[0129] Step S22, determining a target radiation interference point according to the radiation interference value in the radiation interference set;

[0130] It should be noted that the radiation interference value refers to the intensity of the detected electromagnetic radiation signal. The radiation interference value reflects the severity of electromagnetic interference. The higher the value, the stronger the interference signal. The target radiation interference point is determined by analyzing the data points with higher intensity in the radiation interference concentration. These points are usually the locations where interference sources may exist. The determination of the target radiation interference point provides a key reference for the subsequent generation of the radiation interference surface. For example, among the multiple points in the radiation interference concentration, the points with the highest radiation interference values ​​can be defined as the target radiation interference points.

[0131] It can be understood that by analyzing the radiation interference values ​​of all points in the radiation interference set, the points with higher intensity are screened out and determined as target radiation interference points. The radiation intensity of each point in the radiation interference set is compared to find the points that exceed a certain threshold or have relatively high signal strength, and record them as target radiation interference points.

[0132] In a feasible implementation, step S22 may include steps S221 to S223:

[0133] Step S221, obtaining an initial radiation interference point according to the radiation interference set and a preset selection rule;

[0134] It should be noted that the preset selection rule is a standard for screening potential interference points in the radiation interference set to determine the initial radiation interference point. For example, the rule is set to select points with larger radiation interference values, and only points that meet this condition will be selected as initial radiation interference points.

[0135] In addition, it should be noted that the initial radiation interference points are points with higher interference signal strength that are screened out by analyzing the radiation interference set according to preset selection rules. These points are usually locations where interference sources may exist and are used for subsequent further testing and analysis.

[0136] It is understandable that by analyzing the radiation intensity values ​​of all points recorded in the radiation interference set, points that meet the conditions are selected as initial radiation interference points according to the preset selection rules. The specific operation includes: comparing the signal strength data of each point one by one, and selecting points with higher intensity or exceeding the set threshold.

[0137] Step S222, performing a frequency sweep test according to the initial radiation interference point to obtain a target field strength frequency curve of the initial radiation interference point;

[0138] It should be noted that the frequency sweep test is to detect the signal strength distribution of the initial radiation interference point at different frequencies by gradually adjusting the frequency range. The frequency sweep test can generate frequency characteristic data of the target point to help analyze the interference characteristics of the signal and the main influencing frequency. For example, the frequency of an initial radiation interference point is gradually increased from 2GHz to 3GHz, with each step interval of 0.1GHz, and the signal strength at each frequency is recorded.

[0139] It can be understood that the target field strength frequency curve is a curve of changes between frequency and signal strength generated according to the sweep frequency test results, reflecting the frequency domain characteristics of the radiated signal. This curve can be used to analyze the main frequency points and strengths of the interference signal.

[0140] Reference Figure 7 , Figure 7 This is a schematic diagram of a field intensity frequency curve of the second embodiment of the electromagnetic interference positioning method of the present application.

[0141] like Figure 7As shown in the figure, the vertical axis is marked as field strength E, which indicates the electromagnetic field strength at the test point, and the horizontal axis is frequency f, which indicates the frequency of the signal. The three curves are marked with different colors to distinguish different test situations or data records at different times. The red curve shows the change in field strength at one frequency. It can be observed that at a certain frequency point, the field strength is significantly higher than other frequencies. This peak point is marked as Ef, representing the maximum electromagnetic interference intensity at this frequency. The blue and purple curves represent the field strength at other frequencies. The field strength frequency curve helps to identify which frequencies are sensitive areas of electromagnetic interference, which is crucial for understanding the characteristics of interference sources and their impact on vehicle electronic systems. The straight line passing through Ef in the figure may be the standard limit line, that is, the electromagnetic compatibility standard that the test results need to meet. The field strength exceeding this line indicates that the interference at this frequency exceeds the allowable threshold, and special attention and corresponding intervention measures are required. By analyzing these curves, the frequency range that needs to be optimized or improved can be effectively determined, thereby improving the electromagnetic compatibility performance of the vehicle and ensuring the normal operation of electronic equipment without interference. This is an important measure to improve vehicle reliability and safety.

[0142] Step S223, determining the target radiation interference point according to the preset frequency limit and the target field strength frequency curve.

[0143] It should be noted that the preset frequency limit is a frequency standard used to determine whether there is an interference signal on the target field strength frequency curve. Usually set by industry standards or test requirements, the limit is used to filter out the main interference frequency points for further analysis of the interference source. The target radiation interference point is a point with a strong interference signal screened out based on the target field strength frequency curve and the preset frequency limit, indicating the key location of the potential interference source. The determination of the target radiation interference point provides direct input for the subsequent interference source location.

[0144] It can be understood that by comparing the frequency intensity of the target field intensity frequency curve with the preset frequency limit, the frequency point whose intensity exceeds the limit is screened out, and the spatial position corresponding to the point is confirmed as the target radiation interference point. The specific operation is: analyze the signal strength value of each frequency point of the target field intensity frequency curve, and screen out the frequency higher than the frequency limit and its corresponding coordinates.

[0145] Step S23: determining a radiation interference surface according to the target radiation interference point.

[0146] It can be understood that by analyzing the spatial coordinates and radiation intensity data of the target radiation interference point, the data of the target radiation interference point is fitted into a three-dimensional geometric surface using a fitting algorithm to generate a radiation interference surface.

[0147] In a feasible implementation, step S23 may include steps S231 to S232:

[0148] Step S231, obtaining a target radiation interference point position of the target radiation interference point based on the position sensor and the angle sensor;

[0149] It can be understood that the specific spatial position of the target radiation interference point is calculated and recorded based on the coordinate information fed back by the position sensor and the rotation direction and tilt angle information fed back by the angle sensor. The position sensor provides the three-dimensional coordinates of the target point, and the angle sensor provides the directional information of the antenna. The combination of the two can more accurately determine the specific position of the target point. For example, when scanning the target radiation interference point, the position sensor records that the antenna is located at X = 1.5 meters, Y = 1.0 meters, and Z = 1.8 meters. At the same time, the angle sensor feeds back that the rotation angle of the antenna is 30°, and finally determines the spatial coordinates of the target point.

[0150] Step S232, determining the radiation interference surface according to the target radiation interference point position and a preset fitting strategy.

[0151] It should be noted that the preset fitting strategy is a mathematical algorithm or method for generating a radiation interference surface based on the target radiation interference point position data. The preset fitting strategy includes but is not limited to the least squares method, polynomial fitting, Bayesian method, and spline interpolation method. These strategies generate a geometric plane that can describe the distribution of the radiation signal by fitting the data of multiple target points. For example, the least squares method generates an interference surface by minimizing the sum of the squares of the distances from the point to the fitting surface.

[0152] It can be understood that, according to the position data of the target radiation interference point, a preset fitting strategy is used to generate a radiation interference surface that describes the distribution of the interference signal. The specific operation is: the position coordinates of multiple target radiation interference points are input into the fitting algorithm, and a geometric plane containing the main distribution area of ​​the interference signal is obtained by fitting calculation. For example, the input points X = 1.2 meters, Y = 0.8 meters, Z = 1.5 meters and X = 1.5 meters, Y = 1.0 meters, Z = 1.8 meters, and the equation of the interference surface obtained by least squares fitting is 2x + 3y-4z + 5 = 0, which can represent the distribution of interference signals in the target area.

[0153] This embodiment provides an electromagnetic interference positioning method, which uses a mechanical arm to carry an antenna to perform a spherical scan around the test object to form a radiation interference set; based on the preset selection rules and frequency limits, the target radiation interference points are gradually screened and the target field strength frequency curve is generated to accurately identify the main frequency points and intensity distribution of the electromagnetic interference; the three-dimensional spatial position of the target radiation interference point is further obtained by using the precise feedback of the position sensor and the angle sensor, and the radiation interference surface is generated through the fitting strategy to comprehensively describe the spatial distribution characteristics of the interference signal. The application of the above technical means achieves an all-round, high-precision, and automated electromagnetic interference source positioning effect, which not only significantly improves the test efficiency and positioning accuracy, but also effectively reduces the dependence on professional laboratory environments, and provides key data support for the electromagnetic compatibility optimization and design of complex vehicle electronic systems. This embodiment ultimately achieves the goal of quickly and accurately locating electromagnetic interference sources, effectively reducing test costs and significantly improving the reliability and safety of vehicle products.

[0154] For example, to help understand the implementation process of the electromagnetic interference positioning method obtained by combining this embodiment with the above-mentioned embodiment 1, please refer to Figure 8 , Figure 8 A brief flow chart of an electromagnetic interference location method is provided, specifically:

[0155] First, you need to set the scan area, select the scan mode, and determine the scan grid or step, which is to define the physical space and parameters of the test. Next, import and analyze the scan data, which involves collecting and processing the test data. Then, solve the plane and direction of the interference source, which requires in-depth analysis of the data to determine the specific location of the interference. After that, perform near-field positioning and verification, which is a confirmation of the preliminary positioning results. Finally, enter the scanning and positioning of the next frequency point, and repeat the above steps for the interference sources of other frequencies to achieve comprehensive positioning, ensuring that the interference sources of all relevant frequencies are systematically located and analyzed.

[0156] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the electromagnetic interference locating method of the present application. More simple transformations based on this technical concept are all within the protection scope of the present application.

[0157] This application also provides an electromagnetic interference positioning device, please refer to Fig. 9 , the electromagnetic interference positioning device comprises:

[0158] An acquisition module 10 is used to acquire preset test points according to a preset scanning area;

[0159] A detection module 20, used to control the mechanical arm to drive the antenna to perform detection according to the preset test points to obtain a radiation interference surface;

[0160] A determination module 30, configured to obtain an interference curve according to the radiation interference surface, and determine a position of a first interference source according to the interference curve;

[0161] An updating module 40, configured to update the preset scanning area according to the preset scanning distance, obtain a target scanning area, and obtain a second interference source position according to the target scanning area;

[0162] The positioning module 50 is used to determine an interference source position set according to the first interference source position and the second interference source position to complete electromagnetic interference positioning.

[0163] The electromagnetic interference locating device provided by the present application adopts the electromagnetic interference locating method in the above-mentioned embodiment, which can solve the technical problem of how to perform low-cost and high-efficiency electromagnetic interference locating tests without relying on a professional-grade vehicle electromagnetic compatibility laboratory. Compared with the prior art, the beneficial effects of the electromagnetic interference locating device provided by the present application are the same as the beneficial effects of the electromagnetic interference locating method provided by the above-mentioned embodiment, and the other technical features in the electromagnetic interference locating device are the same as the features disclosed in the above-mentioned embodiment method, which will not be repeated here.

[0164] In one embodiment, the detection module 20 is also used to control the mechanical arm to drive the antenna to perform detection according to the preset test point to obtain a radiation interference set; determine the target radiation interference point according to the radiation interference value in the radiation interference set; and determine the radiation interference surface according to the target radiation interference point.

[0165] In one embodiment, the detection module 20 is also used to obtain an initial radiation interference point based on the radiation interference set and a preset selection rule; perform a frequency sweep test based on the initial radiation interference point to obtain a target field strength frequency curve of the initial radiation interference point; and determine the target radiation interference point based on a preset frequency limit and the target field strength frequency curve.

[0166] In one embodiment, the detection module 20 is further used to obtain the target radiation interference point position of the target radiation interference point based on the position sensor and the angle sensor; and determine the radiation interference surface according to the target radiation interference point position and a preset fitting strategy.

[0167] In one embodiment, the detection module 20 is also used to control the robotic arm to drive the antenna to perform detection according to the preset test point to obtain a radiation interference signal; send the radiation interference signal to the signal amplifier so that the signal amplifier returns an amplified signal based on the radiation interference signal; send the amplified signal to the spectrum analyzer and the oscilloscope so that the spectrum analyzer and the oscilloscope return a radiation interference set based on the amplified signal.

[0168] In one embodiment, the determination module 30 is also used to control the mechanical arm to drive the antenna to perform detection according to the radiation interference surface to obtain a field strength value set; obtain the target frequency of the radiation interference surface according to the field strength threshold and the field strength value set; obtain the position coordinates according to the target frequency, and obtain the interference curve according to the position coordinates.

[0169] In one embodiment, the determination module 30 is further used to control the mechanical arm to drive the antenna to perform detection according to the interference curve to obtain a target field strength set; determine the target frequency point coordinates according to the target field strength set; and determine the position of the first interference source according to the target frequency point coordinates.

[0170] The present application provides an electromagnetic interference locating device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the electromagnetic interference locating method in the above-mentioned embodiment 1.

[0171] Reference below Fig.10 , which shows a schematic diagram of the structure of an electromagnetic interference positioning device suitable for implementing the embodiment of the present application. The electromagnetic interference positioning device in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Fig.10 The electromagnetic interference locating device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0172] like Fig.10As shown, the electromagnetic interference locating device may include a processing device 1001 (e.g., a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the electromagnetic interference locating device are also stored. The processing device 1001, ROM1002, and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the electromagnetic interference locating device to communicate with other devices wirelessly or by wire to exchange data. Although the electromagnetic interference locating device with various systems is shown in the figure, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems can be implemented or have alternatively.

[0173] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0174] The electromagnetic interference locating device provided by the present application adopts the electromagnetic interference locating method in the above embodiment, which can solve the technical problem of how to perform low-cost and high-efficiency electromagnetic interference locating tests without relying on a professional-grade vehicle electromagnetic compatibility laboratory. Compared with the prior art, the beneficial effects of the electromagnetic interference locating device provided by the present application are the same as the beneficial effects of the electromagnetic interference locating method provided by the above embodiment, and the other technical features in the electromagnetic interference locating device are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0175] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0176] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0177] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the electromagnetic interference locating method in the above-mentioned embodiment.

[0178] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0179] The computer-readable storage medium may be included in the electromagnetic interference locating device; or may exist independently without being assembled into the electromagnetic interference locating device.

[0180] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by the electromagnetic interference locating device, the electromagnetic interference locating device: obtains preset test points according to the preset scanning area; controls the mechanical arm to drive the antenna to detect according to the preset test points to obtain a radiation interference surface; obtains an interference curve according to the radiation interference surface, and determines the position of the first interference source according to the interference curve; updates the preset scanning area according to the preset scanning distance to obtain a target scanning area, and obtains the position of the second interference source according to the target scanning area; determines an interference source position set according to the first interference source position and the second interference source position to complete electromagnetic interference locating.

[0181] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0182] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0183] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0184] The readable storage medium provided in this application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned electromagnetic interference positioning method, and can solve the technical problem of how to perform low-cost and high-efficiency electromagnetic interference positioning tests without relying on professional-grade vehicle electromagnetic compatibility laboratories. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as the beneficial effects of the electromagnetic interference positioning method provided in the above-mentioned embodiment, and will not be repeated here.

[0185] The present application also provides a computer program product, including a computer program, which implements the steps of the electromagnetic interference locating method as described above when executed by a processor.

[0186] The computer program product provided by this application can solve the technical problem of how to perform low-cost and high-efficiency electromagnetic interference positioning tests without relying on professional-grade vehicle electromagnetic compatibility laboratories. Compared with the prior art, the beneficial effects of the computer program product provided by this application are the same as the beneficial effects of the electromagnetic interference positioning method provided by the above embodiment, and will not be repeated here.

[0187] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A method for locating electromagnetic interference, characterized in that: The method is applied to a frequency positioning test system, the frequency positioning test system comprising: a mechanical arm and an antenna, the mechanical arm and the antenna being connected via a coaxial cable; the method comprising: According to the preset scanning area, obtain the preset test points; According to the preset test points, the mechanical arm is controlled to drive the antenna to perform detection to obtain a radiation interference surface; Obtaining an interference curve according to the radiation interference surface, and determining a position of a first interference source according to the interference curve; updating the preset scanning area according to the preset scanning distance to obtain a target scanning area, and obtaining a second interference source position according to the target scanning area; An interference source position set is determined according to the first interference source position and the second interference source position to complete electromagnetic interference positioning.

2. The method according to claim 1, characterized in that The step of controlling the mechanical arm to drive the antenna to perform detection according to the preset test point to obtain the radiation interference surface includes: According to the preset test points, the mechanical arm is controlled to drive the antenna to perform detection to obtain a radiation interference set; Determining a target radiation interference point according to the radiation interference value in the radiation interference set; A radiation interference surface is determined according to the target radiation interference point.

3. The method according to claim 2, characterized in that The step of determining the target radiation interference point according to the radiation interference value in the radiation interference set comprises: According to the radiation interference set and the preset selection rule, an initial radiation interference point is obtained; Perform a frequency sweep test according to the initial radiation interference point to obtain a target field strength frequency curve of the initial radiation interference point; The target radiation interference point is determined according to the preset frequency limit and the target field strength frequency curve.

4. The method according to claim 2, characterized in that The frequency positioning test system further comprises: a position sensor and an angle sensor, wherein the mechanical arm is connected to the position sensor and the angle sensor via the coaxial cable; The step of determining the radiation interference surface according to the target radiation interference point comprises: Based on the position sensor and the angle sensor, obtaining the target radiation interference point position of the target radiation interference point; The radiation interference surface is determined according to the target radiation interference point position and a preset fitting strategy.

5. The method according to claim 2, characterized in that The frequency positioning test system further includes: a signal amplifier, a spectrum analyzer and an oscilloscope, wherein the signal amplifier is connected to the mechanical arm via the coaxial cable, and the signal amplifier is connected to the spectrum analyzer and the oscilloscope via the coaxial cable; The step of controlling the mechanical arm to drive the antenna to perform detection according to the preset test point to obtain a radiation interference set includes: According to the preset test point, the mechanical arm is controlled to drive the antenna to perform detection to obtain a radiation interference signal; sending the radiation interference signal to the signal amplifier so that the signal amplifier returns an amplified signal based on the radiation interference signal; The amplified signal is sent to the spectrum analyzer and the oscilloscope, so that the spectrum analyzer and the oscilloscope return a radiation interference set based on the amplified signal.

6. The method according to claim 1, characterized in that The step of obtaining an interference curve according to the radiation interference surface comprises: Controlling the mechanical arm to drive the antenna to perform detection according to the radiation interference surface to obtain a field strength value set; Obtaining a target frequency point of the radiation interference surface according to a field strength threshold and the field strength value set; A position coordinate is obtained according to the target frequency point, and an interference curve is obtained according to the position coordinate.

7. The method according to any one of claims 1 to 6, characterized in that The step of obtaining the position of the first interference source according to the interference curve comprises: Control the mechanical arm to drive the antenna to perform detection according to the interference curve to obtain a target field strength set; Determining target frequency point coordinates according to the target field strength set; The position of the first interference source is determined according to the target frequency coordinates.

8. An electromagnetic interference positioning device, characterized in that: The device comprises: An acquisition module, used to acquire preset test points according to a preset scanning area; A detection module, used to control the mechanical arm to drive the antenna to perform detection according to the preset test points to obtain a radiation interference surface; A determination module, configured to obtain an interference curve according to the radiation interference surface, and determine a position of a first interference source according to the interference curve; An updating module, configured to update the preset scanning area according to a preset scanning distance, obtain a target scanning area, and obtain a second interference source position according to the target scanning area; A positioning module is used to determine an interference source position set according to the first interference source position and the second interference source position to complete electromagnetic interference positioning.

9. An electromagnetic interference positioning device, characterized in that: The device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the electromagnetic interference locating method according to any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the electromagnetic interference locating method according to any one of claims 1 to 7 are implemented.

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