A shielded electromagnetic interference injection system and method

Abstract

The application discloses a shielding ground electromagnetic interference injection system and a control method thereof. The system comprises a measured device, a signal generator, an oscilloscope, a console, an isolation table and a test device. The measured device is arranged on the isolation table. The positive terminal of the output signal of the signal generator is connected with the shell A of the measured device through a coupling device. The positive terminal of the probe of the oscilloscope is connected with the shell B of the measured device. The negative terminal of the probe of the oscilloscope is connected with the negative terminal of the output signal of the signal generator. The console is in communication connection with the signal generator and the oscilloscope. The test device is connected with the test interface of the measured device. The shielding ground electromagnetic interference injection system of the application simulates the working condition of the electronic device subjected to the shielding ground electromagnetic interference by injecting the interference signal on the shielding ground. The interference on the shell of the tested device is detected by the oscilloscope. Whether the frequency, the amplitude and the waveform error of the injected signal meet the test requirements are evaluated. The application provides strong support for the electromagnetic compatibility design and optimization of the electronic device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electromagnetic compatibility of electronic equipment, and in particular to a shielding ground electromagnetic interference injection system and a control method thereof. BACKGROUND

[0002] In the field of aerospace, the power of the conducted and radiated electromagnetic interference of electronic equipment on the aircraft is strictly required, and the technical approach to achieve it is mostly through the construction of an electromagnetic discharge path with a system shielding ground, for example, using Y capacitors for power supply. In the aircraft, the shell and the metal shell of each device inside are connected as a system shielding ground. The premise for the effectiveness of the above measures is that the system shielding ground formed has strong electromagnetic shielding effect, that is, the potential at each point can be considered equal, and can be used as a reference for all potentials in the electronic equipment. However, with the miniaturization of aircraft and the development of new material technology, in order to reduce weight, the metal material of the aircraft shell and each device shell is becoming less and less, and the system shielding ground formed thereby cannot be considered an ideal shielding ground at this time. After being subjected to external high-power electromagnetic interference, electromagnetic interference will be induced on the shielding ground. However, all electromagnetic compatibility verification tests at the present stage connect the shell of the system to an ideal shielding ground, and cannot simulate the effect when electromagnetic interference exists on the shielding ground, and cannot evaluate the ability of each electronic device on the aircraft to resist electromagnetic interference on the shielding ground. SUMMARY

[0003] The present application provides a shielding ground electromagnetic interference injection system and a control method thereof to solve the problem that the existing method cannot evaluate the ability of each electronic device on the aircraft to resist electromagnetic interference on the shielding ground when electromagnetic interference exists on the shielding ground.

[0004] The present application provides the following technical solutions:

[0005] In a first aspect, the present application provides a shielding ground electromagnetic interference injection system, comprising a device under test, a signal generator, an oscilloscope, a console, an isolation table and a test device, the device under test is arranged on the isolation table, the positive output signal of the signal generator is connected to the shell A of the device under test through a coupling device, the positive probe of the oscilloscope is connected to the shell B of the device under test, the negative probe of the oscilloscope is connected to the negative output signal of the signal generator, the negative probe of the oscilloscope and the negative output signal of the signal generator are respectively connected to the shielding ground wire, the console is in communication connection with the signal generator and the oscilloscope, and the test device is connected to the test interface of the device under test, wherein:

[0006] The console is used for determining electromagnetic interference signal test parameters, sending signal generation control instructions to the signal generator, receiving electromagnetic interference monitoring data sent by the oscilloscope, and adjusting the electromagnetic interference signal test parameters according to the electromagnetic interference monitoring data.

[0007] The signal generator is configured to receive the signal generation control instruction, simulate an electromagnetic interference source according to the signal generation control instruction, generate an electromagnetic interference signal with specific frequency, specific amplitude and specific waveform, and send the electromagnetic interference signal to the device under test.

[0008] The device under test is configured to receive the electromagnetic interference signal.

[0009] The oscilloscope is configured to monitor the induced signal on the shell of the device under test after the device under test receives the electromagnetic interference signal, obtain electromagnetic interference monitoring data, and send the electromagnetic interference monitoring data to the control console.

[0010] The isolation table is configured to isolate the device under test from the external electromagnetic environment.

[0011] The test equipment is configured to monitor the working state of the device under test after the device under test receives the electromagnetic interference signal, and obtain working state monitoring data.

[0012] In a second aspect, the present application provides a method for controlling a shielded electromagnetic interference injection system, comprising:

[0013] The control console determines electromagnetic interference signal test parameters, sends the signal generation control instruction to the signal generator, receives the electromagnetic interference monitoring data sent by the oscilloscope, and adjusts the electromagnetic interference signal test parameters according to the electromagnetic interference monitoring data.

[0014] The signal generator receives the signal generation control instruction, simulates an electromagnetic interference source according to the signal generation control instruction, generates an electromagnetic interference signal with specific frequency, specific amplitude and specific waveform, and sends the electromagnetic interference signal to the device under test.

[0015] The device under test receives the electromagnetic interference signal.

[0016] The oscilloscope monitors the induced signal on the shell of the device under test after the device under test receives the electromagnetic interference signal, obtains electromagnetic interference monitoring data, and sends the electromagnetic interference monitoring data to the control console.

[0017] The isolation table isolates the device under test from the external electromagnetic environment.

[0018] The test equipment monitors the working state of the device under test after the device under test receives the electromagnetic interference signal, and obtains working state monitoring data.

[0019] The shielded ground electromagnetic interference injection system and the control method thereof provided by the embodiment of the present application simulate the working condition of electronic equipment subjected to electromagnetic interference of the shielded ground by injecting an interference signal on the shielded ground, detect the interference on the shell of the tested equipment through an oscilloscope, evaluate whether the frequency, amplitude and waveform error of the injected signal meet the test requirements, and provide strong support for electromagnetic compatibility design and optimization of electronic equipment, and solve the problem that the existing method cannot evaluate the electromagnetic interference resistance of each electronic equipment on the aircraft when electromagnetic interference exists on the shielded ground. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the shielded ground electromagnetic interference injection system in the embodiment of the present application.

[0021] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application can be realized and achieved by the structure particularly pointed out in the written description, claims, and drawings. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme of the present application will be described in detail below with specific embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0023] As described herein, the term "comprising" and its various variants can be understood as an open term, which means "including but not limited to", and the term "one embodiment" can be understood as "at least one embodiment".

[0024] The inventor found that the existing method cannot evaluate the electromagnetic interference resistance of each electronic equipment on the aircraft when electromagnetic interference exists on the shielded ground. In view of this, in the embodiment of the present application, an interference signal is injected on the shielded ground to simulate the working condition of electronic equipment subjected to electromagnetic interference of the shielded ground, so as to realize electromagnetic compatibility design and optimization of electronic equipment.

[0025] Embodiment one

[0026] Figure 1The structural schematic diagram of the shielding electromagnetic interference injection system of the embodiment of the application is shown schematically, which comprises a device under test, a signal generator, an oscilloscope, a console, an isolation table and a test device, the device under test is arranged on the isolation table, the positive terminal of the output signal of the signal generator is connected with the shell A of the device under test through a coupling device, the positive terminal of the probe of the oscilloscope is connected with the shell B of the device under test, the negative terminal of the probe of the oscilloscope is connected with the negative terminal of the output signal of the signal generator, the negative terminal of the probe of the oscilloscope and the negative terminal of the output signal of the signal generator are respectively connected with a shielding ground wire, the console is communicatively connected with the signal generator and the oscilloscope, the test device is connected with the test interface of the device under test, wherein:

[0027] The console is configured to determine electromagnetic interference signal test parameters, send signal generation control instructions to the signal generator, receive electromagnetic interference monitoring data sent by the oscilloscope, and adjust the electromagnetic interference signal test parameters according to the electromagnetic interference monitoring data.

[0028] The signal generator is configured to receive the signal generation control instructions, simulate an electromagnetic interference source according to the signal generation control instructions, generate electromagnetic interference signals with specific frequencies, specific amplitudes and specific waveforms, and send the electromagnetic interference signals to the device under test.

[0029] The device under test is configured to receive the electromagnetic interference signals.

[0030] The oscilloscope is configured to monitor induced signals on the shell of the device under test after the device under test receives the electromagnetic interference signals, obtain electromagnetic interference monitoring data, and send the electromagnetic interference monitoring data to the console.

[0031] The isolation table is configured to isolate the device under test from an external electromagnetic environment.

[0032] The test device is configured to monitor the working state of the device under test after the device under test receives the electromagnetic interference signals, and obtain working state monitoring data.

[0033] Optionally, the control console is specifically configured to determine the frequency, amplitude and waveform of the electromagnetic interference signal according to the electromagnetic interference simulation requirement, obtain electromagnetic interference signal test parameters, obtain signal generation control instructions according to the electromagnetic interference signal test parameters, send the signal generation control instructions to the signal generator, receive the electromagnetic interference monitoring data sent by the oscilloscope, determine whether the electromagnetic interference signal generated by the signal generator meets the preset experimental requirement according to the electromagnetic interference monitoring data, if yes, control the device under test to be powered on through the test device, and record the electromagnetic interference monitoring data, and if not, readjust the electromagnetic interference signal test parameters until the electromagnetic interference signal generated by the signal generator meets the preset experimental requirement.

[0034] Optionally, the control console is further configured to integrate test management software, record test data, and generate a test report.

[0035] Optionally, the signal generator is further configured to receive the signal generation control instructions, simulate an electromagnetic interference source according to the signal generation control instructions, generate pulse signals and continuous wave signals, and send the pulse signals and the continuous wave signals to the device under test.

[0036] The device under test is further configured to receive the pulse signals and the continuous wave signals.

[0037] Optionally, the isolation table is specifically configured to perform high-resistance isolation between the device under test and the output signal ground of the signal generator.

[0038] Optionally, the test device is further configured to monitor the working voltage waveform of the device under test after the device under test receives the electromagnetic interference signal, and obtain working voltage waveform monitoring data.

[0039] Embodiment Two

[0040] Figure 1 The structure of the shielding electromagnetic interference injection system according to an embodiment of the present application is schematically shown, which includes a device under test, a signal generator, an oscilloscope, a control console, an isolation table and a test device.

[0041] Specifically, the device under test is a target object in a test system that receives electromagnetic interference injection and evaluates electromagnetic compatibility.

[0042] Specifically, the signal generator can generate electromagnetic interference signals with specific frequency, amplitude and waveform for simulating electromagnetic interference sources. Preferably, the signal generator can generate pulse signals, continuous wave signals and the like.

[0043] Specifically, the oscilloscope is used to monitor and record the induced signals on the shell of the device under test during the electromagnetic interference injection process.

[0044] Specifically, the console is the control center of the whole system, responsible for coordinating the working state of each part of the system. The console controls the output parameters of the signal generator through software or hardware to set the test parameters, including but not limited to frequency, amplitude, waveform type, etc., and receives the data from the oscilloscope for real-time processing and display. The preferred console integrates test management software, which can also record test data and generate test reports.

[0045] Specifically, the isolation table is used to isolate the device under test from the external electromagnetic environment, especially to achieve high-impedance isolation between the signal generator output and the signal ground.

[0046] Specifically, the test device is used to monitor the working state of the device under test when it is subjected to electromagnetic interference injection in the test system. The preferred test device can monitor the working voltage waveform of the device under test.

[0047] In one embodiment, the connection relationship of each part is as follows:

[0048] The device under test is placed on the isolation table to ensure high-impedance isolation between the device under test and the signal ground of the signal generator output.

[0049] The positive terminal of the signal generator output serves as the signal source of the analog electromagnetic interference signal and is connected to the shell A of the device under test through a specific coupling device (such as a coupling clamp, an antenna, etc.).

[0050] The positive terminal of the probe of the oscilloscope is connected to the shell B of the device under test, and the negative terminal is connected to the negative terminal of the signal generator output for monitoring and recording the effect of electromagnetic interference injection.

[0051] The console communicates with the signal generator through a control cable or wirelessly. The console sends control instructions to the signal generator to set the test parameters to adjust the frequency, amplitude, and waveform type of the analog electromagnetic interference signal.

[0052] The console receives monitoring data from the oscilloscope through a control cable or wirelessly.

[0053] The test device is connected to the test interface of the device under test through a detection cable or wirelessly to monitor the working state of the device under test during the test. The results can be used to evaluate the working condition of the device under test in the presence of electromagnetic interference, and to evaluate the working performance and stability of the device under test in the simulated electromagnetic interference environment.

[0054] In one embodiment, the working process of the system can be summarized as follows:

[0055] S101: Confirm that each part is connected according to the above connection relationship;

[0056] S102: The measured device is not powered on, and the console sets the signal generator to generate a signal with a specific frequency, amplitude and waveform as an electromagnetic interference signal according to the test requirements;

[0057] S103: The measured device is not powered on, and the console confirms whether the frequency, amplitude and waveform error of the injected signal meet the test requirements according to the sampling data analysis of the oscilloscope, and if not, it goes to S104, and if so, it goes to S105;

[0058] S104: Re-adjust and calibrate the system, and after adjustment, go to S102;

[0059] S105: The measured device is powered on, and the console records the sampling data of the oscilloscope, and the test device tests the working state of the measured device during the test process;

[0060] S106: The test is completed, and the working performance and stability of the measured device in the simulated electromagnetic interference environment are evaluated according to the test results of the test device.

[0061] Example three

[0062] Figure 1 The structure of the shielded electromagnetic interference injection system of an embodiment of the application is schematically shown, which includes a measured device, a signal generator, an oscilloscope, a console, an isolation table and a test device. Figure 1 The functional block diagram of a shielded electromagnetic interference injection system and method of an embodiment of the application.

[0063] Specifically, the measured device is a certain type of electrical control device to be tested, which is the target object of the test system that receives electromagnetic interference injection and evaluates electromagnetic compatibility.

[0064] The signal generator is model AFG31000, which can generate electromagnetic interference signals with specific frequency, amplitude and waveform, and is used to simulate electromagnetic interference sources, and can generate pulse signals, continuous waves and other signals.

[0065] The oscilloscope is model DHO4000, which is used to monitor and record the induced signals on the shell of the measured device during the electromagnetic interference injection process.

[0066] The console is a desktop computer model XPS8960, which sets the test parameters by controlling the output parameters of the signal generator through Ethernet communication, including but not limited to frequency, amplitude, waveform type, etc., receives data from the oscilloscope through Ethernet communication, and performs real-time processing and display. The console integrates test management software, which can also record test data and generate test reports.

[0067] The isolation table is a wooden structure table with a height greater than 5 cm, which is used to isolate the device under test from the external electromagnetic environment, and in particular, to achieve high-resistance isolation between the signal generator output signal and the ground.

[0068] The test device is a special test device for a certain type of electrical control device, which is used to monitor the working state of the electrical control device when it is subjected to electromagnetic interference injection in the test system. The working voltage waveform of the electrical control device can be monitored.

[0069] In one embodiment, the connection relationship of each part is as follows:

[0070] The electrical control device is placed on the wooden structure table to ensure high-resistance isolation between the shell of the electrical control device and the signal ground output by the signal generator.

[0071] The positive terminal of the signal output by the signal generator is connected to the shell A of the electrical control device as the signal source of the analog electromagnetic interference signal through a specific coupling device (such as a coupling clamp, an antenna, etc.).

[0072] The positive terminal of the probe of the oscilloscope is connected to the shell B of the electrical control device, and the negative terminal is connected to the negative terminal of the signal output by the signal generator, which is used to monitor and record the effect of electromagnetic interference injection.

[0073] The control console communicates with the signal generator through a control cable or wirelessly. The control console sends control instructions to the signal generator to set test parameters to adjust the frequency (10 kHz), amplitude (10 v), and waveform type (continuous square wave with a duty cycle of 20%) of the analog electromagnetic interference signal.

[0074] The control console receives monitoring data from the oscilloscope through a network cable.

[0075] The special test device is connected to the test interface of the electrical control device through a test cable, which is used to test the working state of the electrical control device during the test. The results can be used to evaluate the working condition of the electrical control device in the presence of electromagnetic interference on the shielded ground, and to evaluate the working performance and stability of the electrical control device in the simulated electromagnetic interference environment.

[0076] In one embodiment, the working process of the system can be summarized as follows:

[0077] S101: Confirm that each part is connected according to the above connection relationship;

[0078] S102: The electrical control device is not powered on, and the control console sets the signal generator to generate a signal with a frequency (10 kHz), amplitude (10 v), and waveform type (continuous square wave with a duty cycle of 20%) as an electromagnetic interference signal according to the test requirements;

[0079] S103: the electrical control device is not powered on, the control console determines whether the frequency, amplitude and waveform error of the injected signal meet the test requirements according to the sampling data of the oscilloscope, and if not, the process goes to S104, and if yes, the process goes to S105;

[0080] S104: the system is adjusted and calibrated again, and after adjustment, the process goes to S102;

[0081] S105: the electrical control device is powered on, the control console records the sampling data of the oscilloscope, and the special test equipment tests the working state of the electrical control device during the test process;

[0082] S106: the test is completed, and the working performance and stability of the electrical control device in the simulated electromagnetic interference environment are evaluated according to the test results of the special test equipment.

[0083] The above embodiment constructs a shielding ground electromagnetic interference injection system, which simulates the working condition of electronic equipment subjected to shielding ground electromagnetic interference by injecting interference signals on the shielding ground, detects the interference on the shell of the tested equipment through an oscilloscope, evaluates whether the frequency, amplitude and waveform error of the injected signal meet the test requirements, and provides strong support for electromagnetic compatibility design and optimization of electronic equipment.

[0084] Embodiment four

[0085] Based on the same technical concept, the embodiment of the present application also provides a method for controlling a shielding ground electromagnetic interference injection system. Since the principle of the above method for solving the problem is similar to that of the shielding ground electromagnetic interference injection system, the implementation of the above method can be referred to the implementation of the system, and the repeated parts will not be described again.

[0086] The embodiment of the present application provides a method for controlling a shielding ground electromagnetic interference injection system, which is executed by a processor and includes the following steps:

[0087] Step one, the control console determines electromagnetic interference signal test parameters, sends the signal generation control instruction to the signal generator, receives the electromagnetic interference monitoring data sent by the oscilloscope, and adjusts the electromagnetic interference signal test parameters according to the electromagnetic interference monitoring data.

[0088] Step two, the signal generator receives the signal generation control instruction, simulates an electromagnetic interference source according to the signal generation control instruction, generates an electromagnetic interference signal with a specific frequency, a specific amplitude and a specific waveform, and sends the electromagnetic interference signal to the tested equipment.

[0089] Step three, the tested equipment receives the electromagnetic interference signal.

[0090] Step four, the oscilloscope monitors the inductive signal on the shell of the device under test after the device under test receives the electromagnetic interference signal, obtains electromagnetic interference monitoring data, and sends the electromagnetic interference monitoring data to the control console.

[0091] Step five, the isolation table isolates the device under test from the external electromagnetic environment.

[0092] Step six, the test equipment monitors the working state of the device under test after the device under test receives the electromagnetic interference signal, and obtains working state monitoring data.

[0093] In summary, in the embodiment of the application, the shielded electromagnetic interference injection system controls the signal generator to output a specified signal as an electromagnetic interference signal through the control console, injects the signal into the shell of the device under test to simulate the working condition of the device under test in the presence of electromagnetic interference on the shielded ground, and can also detect the interference on the shell of the device under test through the oscilloscope to evaluate whether the frequency, amplitude and waveform error of the injected signal meet the test requirements, thereby providing strong support for the electromagnetic compatibility design and optimization of electronic equipment. Currently, all electromagnetic compatibility test methods cannot meet the above requirements.

[0094] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0095] Those skilled in the art know that, in addition to implementing the system provided by the present application and each subsystem, module and unit thereof in the form of pure computer readable program code, the system provided by the present application and each subsystem, module and unit thereof can also be implemented in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, etc. by logically programming the method steps to achieve the same functions. Therefore, the system provided by the present application and each subsystem, module and unit thereof can be regarded as a structure within a hardware component, or as a software module implementing a method.

[0096] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A shielded electromagnetic interference injection system, characterized by, The system comprises a device under test, a signal generator, an oscilloscope, a console, an isolation table and a test device, the device under test is arranged on the isolation table, the positive terminal of the output signal of the signal generator is connected with the shell A of the device under test through a coupling device, the positive terminal of the probe of the oscilloscope is connected with the shell B of the device under test, the negative terminal of the probe of the oscilloscope is connected with the negative terminal of the output signal of the signal generator, the negative terminal of the probe of the oscilloscope and the negative terminal of the output signal of the signal generator are respectively connected with a shielded ground wire, the console is communicatively connected with the signal generator and the oscilloscope, and the test device is connected with the test interface of the device under test, wherein: The console is configured to determine electromagnetic interference signal test parameters, send signal generation control instructions to the signal generator, receive electromagnetic interference monitoring data sent by the oscilloscope, and adjust the electromagnetic interference signal test parameters according to the electromagnetic interference monitoring data. The signal generator is configured to simulate an electromagnetic interference source according to the received signal generation control instructions, generate electromagnetic interference signals with specific frequencies, specific amplitudes and specific waveforms, and send the electromagnetic interference signals to the device under test. The device under test is configured to receive the electromagnetic interference signals. The oscilloscope is configured to monitor induced signals on the shell of the device under test after the device under test receives the electromagnetic interference signals, obtain electromagnetic interference monitoring data, and send the electromagnetic interference monitoring data to the console. The isolation table is configured to isolate the device under test from an external electromagnetic environment. The test device is configured to monitor the working state of the device under test after the device under test receives the electromagnetic interference signals, and obtain working state monitoring data. The console is specifically configured to determine the frequency, amplitude and waveform of the electromagnetic interference signals according to the needs of electromagnetic interference simulation, obtain electromagnetic interference signal test parameters, obtain signal generation control instructions according to the electromagnetic interference signal test parameters, send the signal generation control instructions to the signal generator, receive electromagnetic interference monitoring data sent by the oscilloscope, determine whether the electromagnetic interference signals generated by the signal generator meet preset experimental requirements according to the electromagnetic interference monitoring data, if yes, control the device under test to be powered on through the test device, record the electromagnetic interference monitoring data, and if not, readjust the electromagnetic interference signal test parameters until the electromagnetic interference signals generated by the signal generator meet the preset experimental requirements.

2. The system of claim 1, wherein: The console is further configured to integrate test management software, record test data and generate a test report.

3. The system of claim 1, wherein: The signal generator is further configured to simulate an electromagnetic interference source according to the signal generation control instructions, generate pulse signals and continuous wave signals, and send the pulse signals and the continuous wave signals to the device under test. The device under test is further configured to receive the pulse signals and the continuous wave signals.

4. The system of claim 1, wherein: The isolation table is specifically used for high-resistance isolation between the device under test and an output signal ground of the signal generator.

5. The system of claim 1, wherein, The test device is further configured to monitor a working voltage waveform of the device under test after the device under test receives the electromagnetic interference signal, and obtain working voltage waveform monitoring data.

6. A method for controlling the shielded electromagnetic interference injection system of any one of claims 1-5, characterized in that, Comprise: The control console determines electromagnetic interference signal test parameters, sends the signal generation control instruction to the signal generator, receives the electromagnetic interference monitoring data sent by the oscilloscope, and adjusts the electromagnetic interference signal test parameters according to the electromagnetic interference monitoring data; The signal generator receives the signal generation control instruction, simulates an electromagnetic interference source according to the signal generation control instruction, generates an electromagnetic interference signal with a specific frequency, a specific amplitude, and a specific waveform, and sends the electromagnetic interference signal to the device under test; The device under test receives the electromagnetic interference signal; The oscilloscope monitors an induced signal on a housing of the device under test after the device under test receives the electromagnetic interference signal, obtains electromagnetic interference monitoring data, and sends the electromagnetic interference monitoring data to the control console; The isolation table isolates the device under test from an external electromagnetic environment; The test device monitors a working state of the device under test after the device under test receives the electromagnetic interference signal, and obtains working state monitoring data.

7. The method of claim 6, wherein, The control console determines electromagnetic interference signal test parameters, sends the signal generation control instruction to the signal generator, receives the electromagnetic interference monitoring data sent by the oscilloscope, and adjusts the electromagnetic interference signal test parameters according to the electromagnetic interference monitoring data, specifically comprising: The control console determines the frequency, amplitude, and waveform of the electromagnetic interference signal according to the need for electromagnetic interference simulation, obtains electromagnetic interference signal test parameters, obtains a signal generation control instruction according to the electromagnetic interference signal test parameters, sends the signal generation control instruction to the signal generator, receives the electromagnetic interference monitoring data sent by the oscilloscope, and determines whether the electromagnetic interference signal generated by the signal generator meets the preset experimental requirements according to the electromagnetic interference monitoring data. If yes, the device under test is powered on, and the electromagnetic interference monitoring data is recorded. If not, the electromagnetic interference signal test parameters are adjusted again until the electromagnetic interference signal generated by the signal generator meets the preset experimental requirements.

8. The method of claim 6, wherein, After the control console determines electromagnetic interference signal test parameters, sends the signal generation control instruction to the signal generator, receives the electromagnetic interference monitoring data sent by the oscilloscope, and adjusts the electromagnetic interference signal test parameters according to the electromagnetic interference monitoring data, further comprising: The control console integrates test management software to record test data and generate a test report.

9. The method of claim 6, wherein, After the signal generator receives the signal generation control instruction, simulates an electromagnetic interference source according to the signal generation control instruction, generates an electromagnetic interference signal with a specific frequency, a specific amplitude, and a specific waveform, and sends the electromagnetic interference signal to the device under test, further comprising: The signal generator receives the signal generation control instruction, simulates an electromagnetic interference source according to the signal generation control instruction, generates a pulse signal and a continuous wave signal, and sends the pulse signal and the continuous wave signal to the device under test. The device under test receives the pulse signal and the continuous wave signal.

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