Vehicle Power Supply Electromagnetic Compatibility Performance Test System

Abstract

The present invention discloses an on-board power supply electromagnetic compatibility performance test system, which belongs to the field of on-board power supply technology, and includes: a data acquisition module for acquiring real-time data on the electromagnetic compatibility of the on-board power supply; a data processing module for processing the real-time data on the electromagnetic compatibility of the on-board power supply; a test evaluation module for testing and evaluating the electromagnetic compatibility characteristic data of the on-board power supply; a test control module for recording and managing the electromagnetic compatibility performance test report of the on-board power supply, and visually displaying the electromagnetic compatibility performance test report of the on-board power supply. The present invention solves the existing problems of being unable to comprehensively monitor and test the electromagnetic compatibility performance of the on-board power supply, and being unable to timely evaluate the electromagnetic compatibility performance of the on-board power supply, resulting in poor safety and reliability in the use of the on-board power supply. The present invention can comprehensively monitor and test the electromagnetic compatibility performance of the on-board power supply, can timely evaluate the electromagnetic compatibility performance of the on-board power supply, and can improve the safety and reliability in the use of the on-board power supply.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted power supplies, and in particular to a vehicle-mounted power supply electromagnetic compatibility performance testing system. Background Art

[0002] The on-board power supply is a power inverter, which can convert DC12V direct current into AC220V alternating current, the same as the mains power, for use in general electrical appliances. It is a convenient power converter.

[0003] Power inverters are widely popular in overseas markets. Due to the high penetration rate of cars abroad, when working or traveling in places without mains electricity, you can use an inverter to connect to the car battery to drive electrical appliances and power tools, bringing convenience to life. It is also a must-have item for car owners. Power inverters are not only suitable for car systems, but can also be used in any place with a DC12V power supply to convert DC12V to AC220V, bringing convenience to life.

[0004] Among them, when the on-board power supply is in use, the electromagnetic compatibility performance of the on-board power supply needs to be tested to ensure the normal use of the on-board power supply.

[0005] The existing system cannot comprehensively monitor and test the electromagnetic compatibility performance of vehicle power supplies, and cannot timely evaluate the electromagnetic compatibility performance of vehicle power supplies, resulting in poor safety and reliability of vehicle power supplies. Summary of the Invention

[0006] The purpose of the present invention is to provide an on-board power supply electromagnetic compatibility performance testing system, which can comprehensively monitor and test the electromagnetic compatibility performance of the on-board power supply, timely evaluate the electromagnetic compatibility performance of the on-board power supply, improve the safety and reliability of the use of the on-board power supply, and solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] Vehicle power supply electromagnetic compatibility performance test system, including:

[0009] Data acquisition module, used to collect anti-interference data and radiation disturbance data of vehicle power equipment, and determine the real-time electromagnetic compatibility data of vehicle power equipment;

[0010] A data processing module is used to process the real-time electromagnetic compatibility data of the vehicle power supply and determine the electromagnetic compatibility characteristic data of the vehicle power supply;

[0011] A test and evaluation module is used to test and evaluate the electromagnetic compatibility characteristic data of the vehicle power supply based on the electromagnetic compatibility standard data of the vehicle power supply, and determine the electromagnetic compatibility performance test and evaluation results of the vehicle power supply;

[0012] The test control module is used to record and manage the electromagnetic compatibility performance test report of the vehicle power supply, and to visually display the electromagnetic compatibility performance test report of the vehicle power supply.

[0013] Preferably, the data acquisition module includes:

[0014] Anti-interference data collection unit, used to collect anti-interference data of vehicle-mounted power supply equipment;

[0015] Among them, based on the external electromagnetic field generated by the electromagnetic field generator, the on-board power supply equipment is placed in different electromagnetic environments for testing, and the performance parameters of the on-board power supply equipment in different electromagnetic interference environments are monitored and collected in real time to obtain the anti-interference data of the on-board power supply equipment;

[0016] Radiation disturbance collection unit, used to collect radiation disturbance data of vehicle-mounted power equipment;

[0017] Among them, the working conditions of the vehicle power supply equipment are simulated based on the power simulator, and the vehicle power supply equipment is placed in the environment of other electronic equipment for testing. The interference of electromagnetic radiation generated by the vehicle power supply equipment during operation on other electronic equipment is monitored and collected in real time, and the radiation interference data of the vehicle power supply equipment is obtained;

[0018] Based on the anti-interference data and radiation interference data of the on-board power supply equipment, the real-time electromagnetic compatibility data of the on-board power supply is determined.

[0019] Preferably, the data processing module includes:

[0020] Data cleaning unit, used to clean the real-time data of electromagnetic compatibility of vehicle power supply;

[0021] Obtain real-time data on electromagnetic compatibility of vehicle power supply;

[0022] Conduct consistency check on real-time electromagnetic compatibility data of vehicle power supply;

[0023] Check whether the real-time electromagnetic compatibility data of the vehicle power supply meets the requirements based on the reasonable value range and mutual relationship of each parameter in the real-time electromagnetic compatibility data of the vehicle power supply;

[0024] Remove inconsistent data that is beyond the normal range, logically unreasonable, or contradictory in the real-time electromagnetic compatibility data of the vehicle power supply;

[0025] Process invalid and missing values ​​of real-time electromagnetic compatibility data of vehicle power supply;

[0026] According to the requirements of the vehicle power supply electromagnetic compatibility performance test, the vehicle power supply electromagnetic compatibility real-time data is checked to determine whether there are invalid values ​​and missing values ​​in the vehicle power supply electromagnetic compatibility real-time data;

[0027] Remove invalid and missing values ​​in the real-time electromagnetic compatibility data of the vehicle power supply that are of no value to the electromagnetic compatibility performance test of the vehicle power supply;

[0028] Determine the real-time electromagnetic compatibility data of the vehicle power supply that is valuable for the electromagnetic compatibility performance test of the vehicle power supply.

[0029] Preferably, the data processing module further includes:

[0030] A data conversion unit, used to convert the real-time electromagnetic compatibility data of the vehicle power supply after cleaning;

[0031] Obtain valuable real-time electromagnetic compatibility data of the vehicle power supply after cleaning;

[0032] Convert the valuable real-time EMC data of vehicle power supply for EMC performance test of vehicle power supply to eliminate the dimensional differences between the real-time EMC data of vehicle power supply;

[0033] Determine standardized real-time electromagnetic compatibility data of vehicle power supplies;

[0034] A feature extraction unit, used to extract the converted real-time electromagnetic compatibility data of the vehicle power supply;

[0035] Obtain standardized real-time electromagnetic compatibility data of vehicle power supplies;

[0036] Perform feature extraction on standardized real-time data of electromagnetic compatibility of vehicle power supplies to extract features that can reflect the electromagnetic compatibility performance test of vehicle power supplies;

[0037] Determine the electromagnetic compatibility characteristic data of the vehicle power supply.

[0038] Preferably, the test evaluation module includes:

[0039] A standard storage unit for storing electromagnetic compatibility standard data of vehicle power supply;

[0040] According to the electromagnetic compatibility performance test requirements of the vehicle power supply, the electromagnetic compatibility standard data of the vehicle power supply is pre-set, and the pre-set electromagnetic compatibility standard data of the vehicle power supply is stored for backup;

[0041] An index extraction unit, used for indexing and extracting vehicle power supply electromagnetic compatibility standard data;

[0042] According to the electromagnetic compatibility performance test requirements of the vehicle power supply, the stored electromagnetic compatibility standard data of the vehicle power supply is indexed, and the indexed electromagnetic compatibility standard data of the vehicle power supply is extracted.

[0043] Preferably, the test evaluation module further includes:

[0044] A test and evaluation unit, used to test and evaluate the electromagnetic compatibility characteristic data of the vehicle power supply;

[0045] Obtain electromagnetic compatibility characteristic data of vehicle power supply;

[0046] Based on the electromagnetic compatibility standard data of the vehicle power supply, the electromagnetic compatibility characteristic data of the vehicle power supply is tested and evaluated to determine the electromagnetic compatibility performance test and evaluation results of the vehicle power supply;

[0047] Among them, if the electromagnetic compatibility characteristic data of the vehicle power supply is within the electromagnetic compatibility standard data range of the vehicle power supply, then the electromagnetic compatibility performance test evaluation result of the vehicle power supply is good;

[0048] Among them, if the electromagnetic compatibility characteristic data of the vehicle power supply is not within the range of the vehicle power supply electromagnetic compatibility standard data, the vehicle power supply electromagnetic compatibility performance test evaluation result is that the vehicle power supply electromagnetic compatibility performance is poor.

[0049] Preferably, the test control module includes:

[0050] Record management unit, used to record and manage vehicle power supply electromagnetic compatibility performance test reports;

[0051] Obtain the electromagnetic compatibility performance test and evaluation results of the vehicle power supply;

[0052] Based on the electromagnetic compatibility performance test and evaluation results of the vehicle power supply, the electromagnetic compatibility characteristic data of the vehicle power supply is mined and analyzed;

[0053] Generate the vehicle power supply electromagnetic compatibility performance test report, and record and manage the vehicle power supply electromagnetic compatibility performance test report.

[0054] Preferably, the test control module further includes:

[0055] Interface display unit, used for visual display of vehicle power supply electromagnetic compatibility performance test report;

[0056] Obtain the electromagnetic compatibility performance test report of the vehicle power supply;

[0057] Transmit the vehicle power supply electromagnetic compatibility performance test report to the user's mobile terminal in real time;

[0058] Users can view the electromagnetic compatibility performance test report of the vehicle power supply in a timely manner based on mobile terminals, allowing users to easily view the electromagnetic compatibility performance test evaluation results of the vehicle power supply and conduct timely optimization and management of the vehicle power supply equipment.

[0059] Preferably, the data conversion unit includes:

[0060] A construction subunit is used to construct a matrix A based on the valuable real-time electromagnetic compatibility data of the vehicle power supply from the electromagnetic compatibility performance test of the vehicle power supply, wherein A contains P rows and N columns, wherein the P rows correspond to the real-time data of P tests; each of the N columns represents the value of an indicator of the real-time data of the test;

[0061] A conversion subunit, used to convert the matrix A to obtain a conversion matrix;

[0062]

[0063] Among them, A i,j is the value of the i-th row and j-th column of matrix A; B i,j is the value of the i-th row and j-th column of the transformation matrix B, i = 1, 2, 3 ... P, j = 1, 2, 3 ... N; A i1,j is the value of the i 1th row and jth column of matrix A, i 1 = 1, 2, 3, ... P; A i2,j is the value of the i2th row and jth column of matrix A, i2 = 1, 2, 3, ... P;

[0064] According to the conversion matrix, the dimensional differences between the real-time electromagnetic compatibility data of the vehicle power supply are eliminated.

[0065] Preferably, the test evaluation module includes:

[0066] Generate modules for:

[0067] Generate a matrix B1 with S rows and D columns based on the vehicle power supply electromagnetic compatibility standard data, where S represents the number of vehicle power supply electromagnetic compatibility standard data; and D represents the value of D basic information indicators of each vehicle power supply electromagnetic compatibility standard data.

[0068] Based on the electromagnetic compatibility characteristic data of the vehicle power supply, a characteristic vector C1 is generated, and the characteristic vector C1 includes the values ​​of D basic information indicators;

[0069] Perform index balancing on matrix B1 and eigenvector C1 to obtain balanced matrix B and balanced vector C;

[0070]

[0071] Among them, B i,j is the value of the i-th row and j-th column of the equilibrium matrix B, C jis the jth value of the equilibrium vector C; B1 i,j is the value of the i-th row and j-th column of matrix B1, C1 j is the j-th value of the eigenvector C, min() is the minimum value in the brackets, max() is the maximum value in the brackets, i = 1, 2, 3...S, j = 1, 2, 3...D;

[0072] Calculate the matching index between the balanced vector C and each row in the balanced matrix B;

[0073]

[0074] Among them, F i is the matching index between the equilibrium vector C and the i-th row in the equilibrium matrix B, i = 1, 2, 3, ... S;

[0075] The largest matching index is screened out and used as the target data based on the corresponding on-board power supply electromagnetic compatibility standard data; the on-board power supply electromagnetic compatibility characteristic data is tested and evaluated based on the target data to determine the on-board power supply electromagnetic compatibility performance test evaluation results.

[0076] Compared with the prior art, the present invention has the following beneficial effects:

[0077] 1. The present invention determines the real-time electromagnetic compatibility data of the vehicle power supply by collecting the anti-interference data and radiation interference data of the vehicle power supply equipment, determines the electromagnetic compatibility characteristic data of the vehicle power supply by processing the real-time electromagnetic compatibility data of the vehicle power supply, and tests and evaluates the electromagnetic compatibility characteristic data of the vehicle power supply according to the electromagnetic compatibility performance test requirements of the vehicle power supply and based on the electromagnetic compatibility standard data of the vehicle power supply to determine the electromagnetic compatibility performance test evaluation result of the vehicle power supply.

[0078] 2. Based on the electromagnetic compatibility performance test and evaluation results of the on-board power supply, the present invention mines and analyzes the electromagnetic compatibility characteristic data of the on-board power supply, generates an on-board power supply electromagnetic compatibility performance test report, and records and manages the on-board power supply electromagnetic compatibility performance test report, allowing users to easily view the test and evaluation results of the on-board power supply electromagnetic compatibility performance and timely optimize and manage the on-board power supply equipment. It can comprehensively monitor and test the electromagnetic compatibility performance of the on-board power supply, timely evaluate the electromagnetic compatibility performance of the on-board power supply, and improve the safety and reliability of the use of the on-board power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0079] Figure 1 This is a structural block diagram of the vehicle-mounted power supply electromagnetic compatibility performance testing system of the present invention;

[0080] Figure 2 This is an algorithm flow chart of the vehicle power supply electromagnetic compatibility performance testing system of the present invention. DETAILED DESCRIPTION

[0081] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0082] In order to solve the existing problem of not being able to comprehensively monitor and test the electromagnetic compatibility performance of vehicle power supplies, and not being able to timely evaluate the electromagnetic compatibility performance of vehicle power supplies, which leads to poor safety and reliability of vehicle power supplies, please refer to Figure 1-Figure 2 , this embodiment provides the following technical solutions:

[0083] The vehicle power supply electromagnetic compatibility performance test system includes: a data acquisition module, a data processing module, a test evaluation module and a test control module.

[0084] It should be noted that the real-time data of the electromagnetic compatibility of the on-board power supply is collected through the data acquisition module, the real-time data of the electromagnetic compatibility of the on-board power supply is processed through the data processing module to determine the electromagnetic compatibility characteristic data of the on-board power supply, the electromagnetic compatibility characteristic data of the on-board power supply is tested and evaluated through the test and evaluation module to determine the electromagnetic compatibility performance test and evaluation results of the on-board power supply, the electromagnetic compatibility performance test report of the on-board power supply is recorded and managed through the test management and control module, and the electromagnetic compatibility performance test report of the on-board power supply is visually displayed, which can comprehensively monitor and test the electromagnetic compatibility performance of the on-board power supply, timely evaluate the electromagnetic compatibility performance of the on-board power supply, and improve the safety and reliability of the use of the on-board power supply.

[0085] Among them, the data acquisition module is used to collect the anti-interference data and radiation interference data of the vehicle power supply equipment, and determine the real-time electromagnetic compatibility data of the vehicle power supply;

[0086] In this embodiment, as a preferred technical solution of the present invention, the data acquisition module includes:

[0087] Anti-interference data collection unit, used to collect anti-interference data of vehicle-mounted power supply equipment;

[0088] Among them, based on the external electromagnetic field generated by the electromagnetic field generator, the on-board power supply equipment is placed in different electromagnetic environments for testing, and the performance parameters of the on-board power supply equipment in different electromagnetic interference environments are monitored and collected in real time to obtain the anti-interference data of the on-board power supply equipment;

[0089] Radiation disturbance collection unit, used to collect radiation disturbance data of vehicle-mounted power equipment;

[0090] Among them, the working conditions of the vehicle power supply equipment are simulated based on the power simulator, and the vehicle power supply equipment is placed in the environment of other electronic equipment for testing. The interference of electromagnetic radiation generated by the vehicle power supply equipment during operation on other electronic equipment is monitored and collected in real time, and the radiation interference data of the vehicle power supply equipment is obtained;

[0091] Based on the anti-interference data and radiation interference data of the on-board power supply equipment, the real-time electromagnetic compatibility data of the on-board power supply is determined.

[0092] The data processing module is used to process the real-time electromagnetic compatibility data of the vehicle power supply and determine the electromagnetic compatibility characteristic data of the vehicle power supply;

[0093] In this embodiment, as a preferred technical solution of the present invention, the data processing module includes:

[0094] Data cleaning unit, used to clean the real-time data of electromagnetic compatibility of vehicle power supply;

[0095] Obtain real-time data on electromagnetic compatibility of vehicle power supply;

[0096] Conduct consistency check on real-time electromagnetic compatibility data of vehicle power supply;

[0097] Check whether the real-time electromagnetic compatibility data of the vehicle power supply meets the requirements based on the reasonable value range and mutual relationship of each parameter in the real-time electromagnetic compatibility data of the vehicle power supply;

[0098] Remove inconsistent data that is beyond the normal range, logically unreasonable, or contradictory in the real-time electromagnetic compatibility data of the vehicle power supply;

[0099] Process invalid and missing values ​​of real-time electromagnetic compatibility data of vehicle power supply;

[0100] According to the requirements of the vehicle power supply electromagnetic compatibility performance test, the vehicle power supply electromagnetic compatibility real-time data is checked to determine whether there are invalid values ​​and missing values ​​in the vehicle power supply electromagnetic compatibility real-time data;

[0101] Remove invalid and missing values ​​in the real-time electromagnetic compatibility data of the vehicle power supply that are of no value to the electromagnetic compatibility performance test of the vehicle power supply;

[0102] Determine the real-time electromagnetic compatibility data of the vehicle power supply that is valuable for the electromagnetic compatibility performance test of the vehicle power supply;

[0103] A data conversion unit, used to convert the real-time electromagnetic compatibility data of the vehicle power supply after cleaning;

[0104] Convert the valuable real-time EMC data of vehicle power supply for EMC performance test of vehicle power supply to eliminate the dimensional differences between the real-time EMC data of vehicle power supply;

[0105] Determine standardized real-time electromagnetic compatibility data of vehicle power supplies;

[0106] A feature extraction unit, used to extract the converted real-time electromagnetic compatibility data of the vehicle power supply;

[0107] Obtain standardized real-time electromagnetic compatibility data of vehicle power supplies;

[0108] Perform feature extraction on standardized real-time data of electromagnetic compatibility of vehicle power supplies to extract features that can reflect the electromagnetic compatibility performance test of vehicle power supplies;

[0109] Determine the electromagnetic compatibility characteristic data of the vehicle power supply.

[0110] It should be noted that the real-time electromagnetic compatibility data of the on-board power supply is obtained, the real-time electromagnetic compatibility data of the on-board power supply is cleaned, and the real-time electromagnetic compatibility data of the on-board power supply that is valuable for the electromagnetic compatibility performance test of the on-board power supply is determined; the real-time electromagnetic compatibility data of the on-board power supply that is valuable for the electromagnetic compatibility performance test of the on-board power supply is converted to eliminate the dimensional differences between the real-time electromagnetic compatibility data of the on-board power supply and determine the standardized real-time electromagnetic compatibility data of the on-board power supply; feature extraction is performed on the standardized real-time electromagnetic compatibility data of the on-board power supply to extract features that can reflect the electromagnetic compatibility performance test of the on-board power supply and determine the electromagnetic compatibility feature data of the on-board power supply, so as to facilitate the subsequent testing and evaluation of the electromagnetic compatibility feature data of the on-board power supply based on the electromagnetic compatibility standard data of the on-board power supply and determine the evaluation results of the electromagnetic compatibility performance test of the on-board power supply.

[0111] Among them, the test and evaluation module is used to test and evaluate the electromagnetic compatibility characteristic data of the vehicle power supply based on the electromagnetic compatibility standard data of the vehicle power supply, and determine the electromagnetic compatibility performance test and evaluation results of the vehicle power supply;

[0112] In this embodiment, as a preferred technical solution of the present invention, the test evaluation module includes:

[0113] A standard storage unit for storing electromagnetic compatibility standard data of vehicle power supply;

[0114] According to the electromagnetic compatibility performance test requirements of the vehicle power supply, the electromagnetic compatibility standard data of the vehicle power supply is pre-set, and the pre-set electromagnetic compatibility standard data of the vehicle power supply is stored for backup;

[0115] An index extraction unit, used for indexing and extracting vehicle power supply electromagnetic compatibility standard data;

[0116] According to the electromagnetic compatibility performance test requirements of the vehicle power supply, the stored electromagnetic compatibility standard data of the vehicle power supply is indexed, and the indexed electromagnetic compatibility standard data of the vehicle power supply is extracted;

[0117] A test and evaluation unit, used to test and evaluate the electromagnetic compatibility characteristic data of the vehicle power supply;

[0118] Obtain electromagnetic compatibility characteristic data of vehicle power supply;

[0119] Based on the electromagnetic compatibility standard data of the vehicle power supply, the electromagnetic compatibility characteristic data of the vehicle power supply is tested and evaluated to determine the electromagnetic compatibility performance test and evaluation results of the vehicle power supply;

[0120] Among them, if the electromagnetic compatibility characteristic data of the vehicle power supply is within the electromagnetic compatibility standard data range of the vehicle power supply, then the electromagnetic compatibility performance test evaluation result of the vehicle power supply is good;

[0121] Among them, if the electromagnetic compatibility characteristic data of the vehicle power supply is not within the range of the vehicle power supply electromagnetic compatibility standard data, the vehicle power supply electromagnetic compatibility performance test evaluation result is that the vehicle power supply electromagnetic compatibility performance is poor.

[0122] In summary, by collecting the anti-interference data and radiation interference data of the on-board power supply equipment, the real-time data of the on-board power supply electromagnetic compatibility is determined. By processing the real-time data of the on-board power supply electromagnetic compatibility, the electromagnetic compatibility characteristic data of the on-board power supply is determined. According to the requirements of the on-board power supply electromagnetic compatibility performance test and based on the on-board power supply electromagnetic compatibility standard data, the on-board power supply electromagnetic compatibility characteristic data is tested and evaluated to determine the on-board power supply electromagnetic compatibility performance test evaluation results.

[0123] Among them, the test management and control module is used to record and manage the electromagnetic compatibility performance test report of the on-board power supply, and to visually display the electromagnetic compatibility performance test report of the on-board power supply.

[0124] In this embodiment, as a preferred technical solution of the present invention, the test control module includes:

[0125] Record management unit, used to record and manage vehicle power supply electromagnetic compatibility performance test reports;

[0126] Obtain the electromagnetic compatibility performance test and evaluation results of the vehicle power supply;

[0127] Based on the electromagnetic compatibility performance test and evaluation results of the vehicle power supply, the electromagnetic compatibility characteristic data of the vehicle power supply is mined and analyzed;

[0128] Generate vehicle power supply electromagnetic compatibility performance test report, and record and manage the vehicle power supply electromagnetic compatibility performance test report;

[0129] Interface display unit, used for visual display of vehicle power supply electromagnetic compatibility performance test report;

[0130] Obtain the electromagnetic compatibility performance test report of the vehicle power supply;

[0131] Transmit the vehicle power supply electromagnetic compatibility performance test report to the user's mobile terminal in real time;

[0132] Users can view the electromagnetic compatibility performance test report of the vehicle power supply in a timely manner based on mobile terminals, allowing users to easily view the electromagnetic compatibility performance test evaluation results of the vehicle power supply and conduct timely optimization and management of the vehicle power supply equipment.

[0133] Preferably, the data conversion unit includes:

[0134] A construction subunit is used to construct a matrix A based on the valuable real-time electromagnetic compatibility data of the vehicle power supply from the electromagnetic compatibility performance test of the vehicle power supply, wherein A contains P rows and N columns, wherein the P rows correspond to the real-time data of P tests; each of the N columns represents the value of an indicator of the real-time data of the test;

[0135] A conversion subunit, used to convert the matrix A to obtain a conversion matrix;

[0136]

[0137] Among them, A i,j is the value of the i-th row and j-th column of matrix A; B i,j is the value of the i-th row and j-th column of the transformation matrix B, i = 1, 2, 3 ... P, j = 1, 2, 3 ... N; A i1,j is the value of the i 1th row and jth column of matrix A, i 1 = 1, 2, 3, ... P; A i2,j is the value of the i2th row and jth column of matrix A, i2 = 1, 2, 3, ... P;

[0138] According to the conversion matrix, the dimensional differences between the real-time electromagnetic compatibility data of the vehicle power supply are eliminated.

[0139] The working principle and beneficial effects of the above technical solution: The main task of constructing the sub-unit is to construct a matrix A based on the valuable real-time data of electromagnetic compatibility of the on-board power supply. Each row of the matrix A represents all the index data of a test, and each column represents the data of a specific indicator in all tests. Including: electromagnetic interference (EMI) index, electromagnetic sensitivity (EMS) index and comprehensive performance index; electromagnetic interference (EMI) index includes: radiated interference (electric field radiation intensity: measure the electric field radiation level generated by the on-board power supply. Magnetic field radiation intensity: measure the magnetic field radiation level generated by the on-board power supply. Radiated emission spectrum: shows the radiation emission intensity of the on-board power supply at different frequencies) conducted interference (conducted emission level: measure the electromagnetic interference level transmitted by the on-board power supply through the power line or other conductors. Harmonic current: evaluate the degree of interference of the harmonic current generated by the on-board power supply on the power grid. Voltage change and flicker: measure the impact of the on-board power supply on the grid voltage stability and Flicker phenomenon) Electromagnetic susceptibility (EMS) indicators, including: Electrostatic discharge (ESD) immunity (Contact discharge voltage: measures the vehicle power supply's resistance to direct contact electrostatic discharge. Air discharge voltage: measures the vehicle power supply's resistance to indirect (through the air) electrostatic discharge. Radio frequency electromagnetic field radiation immunity (Field strength threshold: measures the maximum field strength at which the vehicle power supply maintains normal operation in the radio frequency electromagnetic field. Frequency range: shows the frequency range within which the vehicle power supply is sensitive to radio frequency electromagnetic fields) Radio frequency field induced conducted interference immunity (Conducted interference level threshold: measures the vehicle power supply's resistance to conducted interference induced by radio frequency fields. Test frequency : Used to evaluate the immunity of the on-board power supply to conducted disturbances at different frequencies) Other immunity indicators (voltage sag, short interruption and voltage change immunity: evaluate the stability and reliability of the on-board power supply under voltage fluctuation conditions. Surge (impact) immunity: measure the resistance of the on-board power supply to sudden electromagnetic pulses. Immunity to electrical fast transient pulse groups: evaluate the resistance of the on-board power supply to continuous and rapidly changing electromagnetic pulses) Comprehensive performance indicators, including: Electromagnetic compatibility level: Based on the performance of the on-board power supply in electromagnetic disturbance and electromagnetic sensitivity, comprehensively evaluate its electromagnetic compatibility level. Electromagnetic compatibility test report: Detailed record of the on-board power supply in various electromagnetic Performance in compatibility testing, including test methods, test conditions, and test results. The function of the conversion subunit is to convert the constructed matrix A to obtain a conversion matrix B in order to eliminate the dimensional differences between the data. This formula first centers the original data (i.e., subtracts the mean value) and then normalizes it (i.e., divides it by the standard deviation) to eliminate dimensional differences. Through the conversion matrix B, the dimensional differences between the original data can be eliminated, so that data of different indicators can be compared and analyzed on the same scale. It can effectively process real-time data on the electromagnetic compatibility of vehicle power supplies, providing strong support for subsequent analysis and decision-making.

[0140] Preferably, the test evaluation module includes:

[0141] Generate modules for:

[0142] Generate a matrix B1 with S rows and D columns based on the vehicle power supply electromagnetic compatibility standard data, where S represents the number of vehicle power supply electromagnetic compatibility standard data; and D represents the value of D basic information indicators of each vehicle power supply electromagnetic compatibility standard data.

[0143] Based on the electromagnetic compatibility characteristic data of the vehicle power supply, a characteristic vector C1 is generated, and the characteristic vector C1 includes the values ​​of D basic information indicators;

[0144] Perform index balancing on matrix B1 and eigenvector C1 to obtain balanced matrix B and balanced vector C;

[0145]

[0146]

[0147] Among them, B i,j is the value of the i-th row and j-th column of the equilibrium matrix B, C j is the jth value of the equilibrium vector C; B1 i,j is the value of the i-th row and j-th column of matrix B1, C1 j is the j-th value of the eigenvector C, min() is the minimum value in the brackets, max() is the maximum value in the brackets, i = 1, 2, 3...S, j = 1, 2, 3...D;

[0148] Calculate the matching index between the balanced vector C and each row in the balanced matrix B;

[0149]

[0150] Among them, F i is the matching index between the equilibrium vector C and the i-th row in the equilibrium matrix B, i = 1, 2, 3, ... S;

[0151] The largest matching index is screened out and used as the target data based on the corresponding on-board power supply electromagnetic compatibility standard data; the on-board power supply electromagnetic compatibility characteristic data is tested and evaluated based on the target data to determine the on-board power supply electromagnetic compatibility performance test evaluation results.

[0152] The working principle and beneficial effects of the above technical solution are as follows: Based on the EMC standard data for vehicle power supplies, a matrix B1 with S rows and D columns is generated. This is equivalent to obtaining multiple pieces of EMC standard data for vehicle power supplies to build a database and generate a data matrix. Basic information indicators include electromagnetic interference (EMI) indicators and electromagnetic susceptibility (EMS) indicators. Matrix B1 and eigenvector C1 are equalized to obtain the equalization matrix B and equalization vector C. This facilitates eliminating dimensional differences between data, allowing data from different indicators to be compared on the same scale. The processing formula considers the maximum and minimum values ​​of each indicator and maps them to a new range. The formula calculates the matching index between the equalization vector C and each row in the equalization matrix B. The matching index reflects the difference between the corresponding elements in the vector and matrix. The square root and absolute value operations in the formula help emphasize the magnitude of the difference, while the denominator is used to normalize the results to make them comparable across different data sets. The largest matching index is screened out and used as the target data based on the corresponding on-board power supply electromagnetic compatibility standard data. This facilitates screening out the data most suitable for evaluating the electromagnetic compatibility characteristic data of the on-board power supply from multiple standard data. The on-board power supply electromagnetic compatibility characteristic data is tested and evaluated based on the target data, and the on-board power supply electromagnetic compatibility performance test and evaluation results are determined, thereby improving the accuracy of the test and evaluation results.

[0153] In summary, based on the on-board power supply electromagnetic compatibility performance test and evaluation results, the on-board power supply electromagnetic compatibility characteristic data is mined and analyzed, and the on-board power supply electromagnetic compatibility performance test report is generated. The on-board power supply electromagnetic compatibility performance test report is recorded and managed, so that users can easily view the test on-board power supply electromagnetic compatibility performance test and evaluation results, and timely optimize and manage the on-board power supply equipment. It can comprehensively monitor and test the on-board power supply electromagnetic compatibility performance, timely evaluate the on-board power supply electromagnetic compatibility performance, and improve the safety and reliability of the on-board power supply.

[0154] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0155] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. The vehicle power supply electromagnetic compatibility performance test system is characterized by: include: Data acquisition module, used to collect anti-interference data and radiation disturbance data of vehicle power equipment, and determine the real-time electromagnetic compatibility data of vehicle power equipment; A data processing module is used to process the real-time electromagnetic compatibility data of the vehicle power supply and determine the electromagnetic compatibility characteristic data of the vehicle power supply; A test and evaluation module is used to test and evaluate the electromagnetic compatibility characteristic data of the vehicle power supply based on the electromagnetic compatibility standard data of the vehicle power supply, and determine the electromagnetic compatibility performance test and evaluation results of the vehicle power supply; The test control module is used to record and manage the electromagnetic compatibility performance test reports of the vehicle power supply, and to visually display the electromagnetic compatibility performance test reports of the vehicle power supply; The test evaluation module includes: Generate modules for: Generate a matrix B1 with S rows and D columns based on the vehicle power supply electromagnetic compatibility standard data, where S represents the number of vehicle power supply electromagnetic compatibility standard data; and D represents the value of D basic information indicators of each vehicle power supply electromagnetic compatibility standard data. Based on the electromagnetic compatibility characteristic data of the vehicle power supply, a characteristic vector C1 is generated, and the characteristic vector C1 includes the values ​​of D basic information indicators; Perform index balancing on matrix B1 and eigenvector C1 to obtain balanced matrix B and balanced vector C; Among them, B i,j is the value of the i-th row and j-th column of the equilibrium matrix B, C j is the jth value of the equilibrium vector C; B1 i,j is the value of the i-th row and j-th column of matrix B1, C1 j is the j-th value of the eigenvector C, min() is the minimum value in the brackets, max() is the maximum value in the brackets, i = 1, 2, 3...S, j = 1, 2, 3...D; Calculate the matching index between the balanced vector C and each row in the balanced matrix B; Among them, F i is the matching index between the equilibrium vector C and the i-th row in the equilibrium matrix B, i = 1, 2, 3, ... S; The largest matching index is screened out and used as the target data based on the corresponding on-board power supply electromagnetic compatibility standard data; the on-board power supply electromagnetic compatibility characteristic data is tested and evaluated based on the target data to determine the on-board power supply electromagnetic compatibility performance test evaluation results.

2. The vehicle-mounted power supply electromagnetic compatibility performance testing system according to claim 1, characterized in that: The data acquisition module includes: Anti-interference data collection unit, used to collect anti-interference data of vehicle-mounted power supply equipment; Among them, based on the external electromagnetic field generated by the electromagnetic field generator, the on-board power supply equipment is placed in different electromagnetic environments for testing, and the performance parameters of the on-board power supply equipment in different electromagnetic interference environments are monitored and collected in real time to obtain the anti-interference data of the on-board power supply equipment; Radiation disturbance collection unit, used to collect radiation disturbance data of vehicle-mounted power equipment; Among them, the working conditions of the vehicle power supply equipment are simulated based on the power simulator, and the vehicle power supply equipment is placed in the environment of other electronic equipment for testing. The interference of electromagnetic radiation generated by the vehicle power supply equipment during operation on other electronic equipment is monitored and collected in real time, and the radiation interference data of the vehicle power supply equipment is obtained; Based on the anti-interference data and radiation interference data of the on-board power supply equipment, the real-time electromagnetic compatibility data of the on-board power supply is determined.

3. The vehicle-mounted power supply electromagnetic compatibility performance testing system according to claim 2, characterized in that: The data processing module includes: Data cleaning unit, used to clean the real-time data of electromagnetic compatibility of vehicle power supply; Obtain real-time data on electromagnetic compatibility of vehicle power supply; Conduct consistency check on real-time electromagnetic compatibility data of vehicle power supply; Check whether the real-time electromagnetic compatibility data of the vehicle power supply meets the requirements based on the reasonable value range and mutual relationship of each parameter in the real-time electromagnetic compatibility data of the vehicle power supply; Remove inconsistent data that is beyond the normal range, logically unreasonable, or contradictory in the real-time electromagnetic compatibility data of the vehicle power supply; Process invalid and missing values ​​of real-time electromagnetic compatibility data of vehicle power supply; According to the requirements of the vehicle power supply electromagnetic compatibility performance test, the vehicle power supply electromagnetic compatibility real-time data is checked to determine whether there are invalid values ​​and missing values ​​in the vehicle power supply electromagnetic compatibility real-time data; Remove invalid and missing values ​​in the real-time electromagnetic compatibility data of the vehicle power supply that are of no value to the electromagnetic compatibility performance test of the vehicle power supply; Determine the real-time electromagnetic compatibility data of the vehicle power supply that is valuable for the electromagnetic compatibility performance test of the vehicle power supply.

4. The vehicle-mounted power supply electromagnetic compatibility performance testing system according to claim 3, characterized in that: The data processing module further includes: A data conversion unit, used to convert the real-time electromagnetic compatibility data of the vehicle power supply after cleaning; Obtain valuable real-time electromagnetic compatibility data of the vehicle power supply after cleaning; Convert the valuable real-time EMC data of vehicle power supply for EMC performance test of vehicle power supply to eliminate the dimensional differences between the real-time EMC data of vehicle power supply; Determine standardized real-time electromagnetic compatibility data of vehicle power supplies; A feature extraction unit, used to extract the converted real-time electromagnetic compatibility data of the vehicle power supply; Obtain standardized real-time electromagnetic compatibility data of vehicle power supplies; Perform feature extraction on standardized real-time data of electromagnetic compatibility of vehicle power supplies to extract features that can reflect the electromagnetic compatibility performance test of vehicle power supplies; Determine the electromagnetic compatibility characteristic data of the vehicle power supply.

5. The vehicle-mounted power supply electromagnetic compatibility performance testing system according to claim 4, characterized in that: The test evaluation module includes: A standard storage unit for storing electromagnetic compatibility standard data of vehicle power supply; According to the electromagnetic compatibility performance test requirements of the vehicle power supply, the electromagnetic compatibility standard data of the vehicle power supply is pre-set, and the pre-set electromagnetic compatibility standard data of the vehicle power supply is stored for backup; An index extraction unit, used for indexing and extracting vehicle power supply electromagnetic compatibility standard data; According to the electromagnetic compatibility performance test requirements of the vehicle power supply, the stored electromagnetic compatibility standard data of the vehicle power supply is indexed, and the indexed electromagnetic compatibility standard data of the vehicle power supply is extracted.

6. The vehicle-mounted power supply electromagnetic compatibility performance testing system according to claim 5, characterized in that: The test evaluation module further includes: A test and evaluation unit, used to test and evaluate the electromagnetic compatibility characteristic data of the vehicle power supply; Obtain electromagnetic compatibility characteristic data of vehicle power supply; Based on the electromagnetic compatibility standard data of the vehicle power supply, the electromagnetic compatibility characteristic data of the vehicle power supply is tested and evaluated to determine the electromagnetic compatibility performance test and evaluation results of the vehicle power supply; Among them, if the electromagnetic compatibility characteristic data of the vehicle power supply is within the electromagnetic compatibility standard data range of the vehicle power supply, then the electromagnetic compatibility performance test evaluation result of the vehicle power supply is good; Among them, if the electromagnetic compatibility characteristic data of the vehicle power supply is not within the range of the vehicle power supply electromagnetic compatibility standard data, the vehicle power supply electromagnetic compatibility performance test evaluation result is that the vehicle power supply electromagnetic compatibility performance is poor.

7. The vehicle-mounted power supply electromagnetic compatibility performance testing system according to claim 6, characterized in that: The test control module includes: Record management unit, used to record and manage vehicle power supply electromagnetic compatibility performance test reports; Obtain the electromagnetic compatibility performance test and evaluation results of the vehicle power supply; Based on the electromagnetic compatibility performance test and evaluation results of the vehicle power supply, the electromagnetic compatibility characteristic data of the vehicle power supply is mined and analyzed; Generate the vehicle power supply electromagnetic compatibility performance test report, and record and manage the vehicle power supply electromagnetic compatibility performance test report.

8. The vehicle-mounted power supply electromagnetic compatibility performance testing system according to claim 7, characterized in that: The test control module further includes: Interface display unit, used for visual display of vehicle power supply electromagnetic compatibility performance test report; Obtain the electromagnetic compatibility performance test report of the vehicle power supply; Transmit the vehicle power supply electromagnetic compatibility performance test report to the user's mobile terminal in real time; Users can view the electromagnetic compatibility performance test report of the vehicle power supply in a timely manner based on mobile terminals, allowing users to easily view the electromagnetic compatibility performance test evaluation results of the vehicle power supply and conduct timely optimization and management of the vehicle power supply equipment.

9. The vehicle-mounted power supply electromagnetic compatibility performance testing system according to claim 4, characterized in that: Data conversion unit, including: A construction subunit is used to construct a matrix A based on the valuable real-time electromagnetic compatibility data of the vehicle power supply from the electromagnetic compatibility performance test of the vehicle power supply, wherein A contains P rows and N columns, wherein the P rows correspond to the real-time data of P tests; each of the N columns represents the value of an indicator of the real-time data of the test; A conversion subunit, used to convert the matrix A to obtain a conversion matrix; Among them, A i,j is the value of the i-th row and j-th column of matrix A; B i,j is the value of the i-th row and j-th column of the transformation matrix B, i = 1, 2, 3 ... P, j = 1, 2, 3 ... N; A i1,j is the value of the i1th row and jth column of matrix A, i1=1, 2, 3……P; A i2,j is the value of the i2th row and jth column of matrix A, i2 = 1, 2, 3, ... P; According to the conversion matrix, the dimensional differences between the real-time electromagnetic compatibility data of the vehicle power supply are eliminated.

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