Radiation immunity test system and radiation immunity test method

Abstract

The embodiment of the invention provides a radiation immunity testing system and a radiation immunity testing method, and relates to the technical field of electromagnetic compatibility radiation immunity testing. The system comprises a first signal transmitting module used for transmitting a working signal required by a radio frequency module in tested equipment; the second signal transmitting module is used for transmitting an interference signal; the test module is in communication connection with the radio frequency module and is used for acquiring the first noise adding signal, generating a first sub-signal and a second sub-signal based on the first noise adding signal, sending the first sub-signal to the radio frequency module and determining first energy information of a first target signal in a problem frequency band in the second sub-signal; wherein the first noise adding signal is a working signal after the interference signal is superposed, and the first energy information is used for evaluating the radiation immunity of the radio frequency module. Therefore, the radiation immunity of the radio frequency module can be quantitatively evaluated, and the problem positioning efficiency can be improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of electromagnetic compatibility radiation immunity testing, and particularly to a radiation immunity testing system and a radiation immunity testing method. Background Art

[0002] In traditional EMC (Electromagnetic Compatibility) radiation immunity testing, when a problem occurs in the Equipment Under Test (EUT) integrated with a radio frequency module, the problem is located based on the working phenomenon of the EUT (such as communication interruption). The problem location depends on experience and has low efficiency. Summary of the Invention

[0003] The embodiments of the present application provide a radiation immunity testing system and a radiation immunity testing method, which can quantitatively evaluate the radiation immunity of the radio frequency module in the equipment under test and help improve the problem location efficiency.

[0004] In a first aspect, the embodiments of the present application provide a radiation immunity testing system, including:

[0005] A first signal transmitting module, configured to transmit a working signal required by the radio frequency module in the equipment under test;

[0006] A second signal transmitting module, configured to transmit an interference signal;

[0007] A testing module, communicatively connected to the radio frequency module, configured to obtain a first noise-added signal, generate a first sub-signal and a second sub-signal based on the first noise-added signal, send the first sub-signal to the radio frequency module, and determine first energy information of a first target signal in the problem frequency band in the second sub-signal; wherein, the first noise-added signal is a working signal superimposed with an interference signal, and the first energy information is used to evaluate the radiation immunity of the radio frequency module.

[0008] In an implementation manner, the testing module includes a spectrum analyzer;

[0009] The testing module is configured to determine the first energy information of the first target signal in the problem frequency band in the second sub-signal, including:

[0010] Sending the second sub-signal to the spectrum analyzer to determine the first energy information through the spectrum analyzer.

[0011] In an implementation manner, the above system further includes:

[0012] A signal receiving module, communicatively connected to the testing module, configured to receive the first noise-added signal and send the first noise-added signal to the testing module.

[0013] In one embodiment, the test module further includes a pluggable filter;

[0014] The test module is further configured to:

[0015] When the filter is connected to the signal receiving module, the filter (152) receives the second noise-added signal sent by the signal receiving module, and filters the second noise-added signal to obtain a first filtered signal; wherein, the second noise-added signal is a working signal with an interference signal superimposed thereon;

[0016] Generate a third sub-signal and a fourth sub-signal based on the first filtered signal, send the third sub-signal to the RF module, and send the fourth sub-signal to the spectrum analyzer;

[0017] The spectrum analyzer determines the second energy information of the second target signal in the problem frequency band in the fourth sub-signal;

[0018] Determine the insertion loss of the filter based on the first energy information and the second energy information.

[0019] In one embodiment, the test module further includes a power splitter, which includes a first port connected to the RF module, a second port connected to the spectrum analyzer, and a third port that can be connected to the signal receiving module or the filter.

[0020] In one embodiment, when the third port is connected to the signal receiving module, the power splitter is configured to:

[0021] Receive the first noise-added signal from the signal receiving module through the third port;

[0022] Generate a first sub-signal and a second sub-signal based on the first noise-added signal;

[0023] Send the first sub-signal to the RF module through the first port, and send the second sub-signal to the spectrum analyzer through the second port.

[0024] In one embodiment, when the third port is connected to the filter, the power splitter is configured to:

[0025] Receive the first filtered signal from the filter through the third port;

[0026] Generate a third sub-signal and a fourth sub-signal based on the first filtered signal;

[0027] Send the third sub-signal to the RF module through the first port, and send the fourth sub-signal to the spectrum analyzer through the second port.

[0028] In one embodiment, the frequency band of the spectrum analyzer is adjusted to the problem frequency band;

[0029] The test module is further configured to:

[0030] Adjust the parameters of the filter based on the signal energy change on the spectrum analyzer and the operating state of the device under test;

[0031] Detect the operating state of the device under test;

[0032] In response to the detected operating state meeting the set electromagnetic compatibility requirements, end the parameter adjustment of the filter.

[0033] In one implementation, when the detected operating state meets the electromagnetic compatibility requirements, the test module is further configured to:

[0034] After the frequency band of the spectrum analyzer is adjusted from the problem frequency band to the operating frequency band of the radio frequency module, the filter receives the third noise-added signal sent by the signal receiving module and filters the third noise-added signal to obtain the second filtered signal; wherein, the third noise-added signal is the operating signal with the interference signal superimposed;

[0035] Generate a fifth sub-signal and a sixth sub-signal based on the second filtered signal, send the fifth sub-signal to the radio frequency module, and send the sixth sub-signal to the spectrum analyzer;

[0036] The spectrum analyzer determines the third energy information of the third target signal in the sixth sub-signal that is in the operating frequency band;

[0037] After the filter is disconnected from the signal receiving module, receive the fourth noise-added signal sent by the signal receiving module; wherein, the fourth noise-added signal is the operating signal with the interference signal superimposed;

[0038] Generate a seventh sub-signal and an eighth sub-signal based on the fourth noise-added signal, send the seventh sub-signal to the radio frequency module, and send the eighth sub-signal to the spectrum analyzer;

[0039] The spectrum analyzer determines the fourth energy information of the fourth target signal in the eighth sub-signal that is in the operating frequency band;

[0040] Based on the third energy information and the fourth energy information, determine the influence of the filter on the operating frequency band;

[0041] In response to the influence being no influence, end the parameter adjustment of the filter.

[0042] In a second aspect, an embodiment of the present application provides a radiation immunity test method, which is executed by a test module in a radiation immunity test system. The system further includes a first signal transmitting module for transmitting the operating signal required by the radio frequency module in the device under test, and a second signal transmitting module for transmitting an interference signal. The test module is communicatively connected to the radio frequency module. The method includes:

[0043] Obtain a first noise-added signal, where the first noise-added signal is the working signal after superimposing an interference signal;

[0044] Generate a first sub-signal and a second sub-signal based on the first noise-added signal, and send the first sub-signal to the RF module;

[0045] Determine the first energy information of a first target signal in a problem frequency band in the second sub-signal; wherein, the first energy information is used to evaluate the radiation immunity of the RF module.

[0046] In a third aspect, an embodiment of the present application provides a computer device, which includes a memory and a processor. A computer program is stored in the memory. When the processor executes the computer program, the radiation immunity test method described in the second aspect is implemented.

[0047] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the radiation immunity test method described in the second aspect is implemented.

[0048] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program / instructions. When the computer program / instructions are executed by a processor, the radiation immunity test method described in the second aspect is implemented.

[0049] In the solution provided by the embodiment of the present application, the radiation immunity test system includes: a first signal transmitting module, configured to transmit the working signal required by the RF module in the device under test; a second signal transmitting module, configured to transmit an interference signal; a test module, communicatively connected to the RF module, configured to obtain the first noise-added signal, generate a first sub-signal and a second sub-signal based on the first noise-added signal, and send the first sub-signal to the RF module, and determine the first energy information of a first target signal in a problem frequency band in the second sub-signal; wherein, the first noise-added signal is the working signal after superimposing the interference signal, and the first energy information is used to evaluate the radiation immunity of the RF module. By making the system include a test module, the test module can be used to quantify the signals in the problem frequency band, thereby quantifying and evaluating the radiation immunity of the RF module, which helps to improve the problem location efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The following will make the technical solutions and other beneficial effects of the present application obvious by describing the specific embodiments of the present application in detail in conjunction with the drawings.

[0051] Figure 1 is a schematic structural diagram of a radiation immunity test system provided by an embodiment of the present application;

[0052] Figure 2It is another schematic structural diagram of the radiation immunity test system provided by the embodiments of the present application;

[0053] Figure 3 It is another schematic structural diagram of the radiation immunity test system provided by the embodiments of the present application;

[0054] Figure 4 It is another schematic structural diagram of the radiation immunity test system provided by the embodiments of the present application;

[0055] Figure 5 It is another schematic structural diagram of the radiation immunity test system provided by the embodiments of the present application;

[0056] Figure 6 It is another schematic structural diagram of the radiation immunity test system provided by the embodiments of the present application;

[0057] Figure 7 It is a flowchart of a radiation immunity test method provided by the embodiments of the present application;

[0058] Figure 8 It is another flowchart of the radiation immunity test method provided by the embodiments of the present application.

[0059] Reference numerals: 11 - device under test, 111 - radio frequency module, 12 - first signal transmitting module, 121 - first signal generator, 122 - first radio frequency antenna, 13 - second signal transmitting module, 131 - second signal generator, 132 - second radio frequency antenna, 14 - signal receiving module, 15 - test module, 151 - spectrum analyzer, 152 - pluggable filter, 153 - power splitter, 1531 - first port, 1532 - second port, 1533 - third port, 16 - anechoic chamber. Detailed implementation manners

[0060] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0061] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the term "and / or" in this text is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this text generally represents an "or" relationship between the associated objects before and after without special instructions.

[0062] As described above, in the traditional EMC radiation immunity test, when a problem occurs in the EUT with an integrated radio frequency module, the problem is located based on the working phenomenon of the EUT. The problem location depends on experience and the efficiency is low.

[0063] The embodiment of the present application provides a radiation immunity test system and a radiation immunity test method, which can quantitatively evaluate the radiation immunity of the radio frequency module in the device under test and help improve the problem location efficiency.

[0064] Next, in combination with Figures 1 to 6 , the radiation immunity test system provided by the embodiment of the present application will be introduced. Among them, Figures 1 to 6 are all schematic structural diagrams of the radiation immunity test system provided by the embodiment of the present application.

[0065] As Figures 1 to 6 shown, the radiation immunity test system provided by the embodiment of the present application includes:

[0066] The first signal transmitting module 12 is used to transmit the working signal required by the radio frequency module 111 in the device under test 11;

[0067] The second signal transmitting module 13 is used to transmit interference signals;

[0068] The test module 15 is communicatively connected to the radio frequency module 111, and is used to obtain a first noise-added signal, generate a first sub-signal and a second sub-signal based on the first noise-added signal, send the first sub-signal to the radio frequency module 111, and determine the first energy information of the first target signal in the problem frequency band in the second sub-signal; wherein, the first noise-added signal is the working signal after superimposing the interference signal, and the first energy information is used to evaluate the radiation immunity of the radio frequency module 111.

[0069] It should be noted that by making the radiation immunity test system include the test module 15, the signals in the problem frequency band can be quantified by using the test module 15, so as to quantitatively evaluate the radiation immunity of the radio frequency module 111, which helps to improve the problem location efficiency.

[0070] In practice, the working signal transmitted by the first signal transmitting module 12 is a radio frequency signal. In one implementation, as Figure 6 shown, the first signal transmitting module 12 may include a first signal generator 121 and a first radio frequency antenna 122 that are communicatively connected. The first signal generator 121 is used to generate the working signal required by the radio frequency module 111, and the first radio frequency antenna 122 is used to transmit the working signal.

[0071] The interference signal transmitted by the second signal transmitting module 13 is used for radiation immunity testing, and the interference signal is a radio frequency signal. In one implementation, as Figure 6As shown, the second signal transmitting module 13 may include a second signal generator 131 and a second RF antenna 132 that are communicatively connected. The second signal generator 131 is used to generate an interference signal for radiated immunity testing, and the second RF antenna 132 is used to transmit the interference signal.

[0072] During the radiated immunity testing process, the first signal transmitting module 12 can transmit the working signal required by the RF module 111 in real time, the second signal transmitting module 13 can transmit the interference signal for radiated immunity testing in real time, and the testing module 15 can obtain the noise-added signal in real time. The noise-added signal is the working signal after the interference signal is superimposed. It should be noted that in order to distinguish the noise-added signals obtained by the testing module 15 at different times, terms such as "first", "second", "third", etc. are used for distinction in the embodiments of the present application.

[0073] The testing module 15 can obtain the first noise-added signal, and the first noise-added signal is the working signal after the interference signal is superimposed. In practice, as Figures 2 to 6 shown, the radiated immunity testing system may further include a signal receiving module 14. The signal receiving module 14 is communicatively connected to the testing module 15. The signal receiving module 14 can receive the first noise-added signal and send the first noise-added signal to the testing module 15. Among them, the signal receiving module 14 can be an RF antenna, and the signal receiving module 14 and the first RF antenna 122 communicate with each other through the air interface.

[0074] After the testing module 15 obtains the first noise-added signal, it can generate a first sub-signal and a second sub-signal based on the first noise-added signal and send the first sub-signal to the RF module 111 so that the RF module 111 can work. Among them, either the first sub-signal or the second sub-signal can be exactly the same as the first noise-added signal or a partial signal of the first noise-added signal, and no specific limitation is made here. In one example, the first noise-added signal can be evenly divided to obtain the first sub-signal and the second sub-signal. In another example, the first noise-added signal can be segmented according to a set ratio to obtain the first sub-signal and the second sub-signal. In yet another example, the first noise-added signal can be directly determined as the first sub-signal and the second sub-signal.

[0075] In addition, in order to quantitatively evaluate the radiation immunity of the RF module 111, the test module 15 can determine the first energy information of the first target signal in the problem frequency band in the second sub-signal. Among them, the problem frequency band can be determined based on the interference frequency band generated by the second signal transmitting module 13. It should be noted that when the problem frequency band contains only one frequency point, this problem frequency band can be regarded as a special frequency band, which can be called the problem frequency point. The first energy information includes but is not limited to the amplitude of the first target signal, and is used to evaluate the radiation immunity of the RF module 111. It should be understood that locating problems based on the amplitude of the signals in the problem frequency band can greatly improve the problem location efficiency compared to relying on experience for problem location.

[0076] In one implementation, as Figures 2 to 6 shown, the test module 15 may include a spectrum analyzer 151. Among them, the spectrum analyzer 151 is used for quantitative testing and can generate a frequency domain energy distribution diagram based on the received signal, and this frequency domain energy distribution diagram shows the signal energy information. Specifically, the test module 15 can send the second sub-signal to the spectrum analyzer 151, and the spectrum analyzer 151 determines the first energy information of the first target signal in the problem frequency band in the second sub-signal.

[0077] In one implementation, as Figures 2 to 6 shown, the test module 15 may further include a pluggable filter 152. Among them, the filter 152 can be connected to the signal receiving module 14 as described above. In addition, the filter 152 may include at least one of an inductance-capacitance filter, a surface acoustic wave filter, and a cavity filter, etc.

[0078] Furthermore, when the radiation immunity test system further includes a signal receiving module 14, and the test module 15 includes a spectrum analyzer 151 and a filter 152, the test module 15 is further used for:

[0079] In the case where the filter 152 is connected to the signal receiving module 14, the filter 152 receives the second noise-added signal sent by the signal receiving module 14 and performs filtering processing on the second noise-added signal to obtain a first filtered signal; among them, the second noise-added signal is the working signal after superimposing the interference signal;

[0080] Generate a third sub-signal and a fourth sub-signal based on the first filtered signal, send the third sub-signal to the RF module 111, and send the fourth sub-signal to the spectrum analyzer 151;

[0081] The spectrum analyzer 151 determines the second energy information of the second target signal in the problem frequency band in the fourth sub-signal;

[0082] Based on the first energy information and the second energy information, determine the insertion loss of the filter 152.

[0083] Among them, when both the first energy information and the second energy information are amplitudes, the insertion loss can be determined based on the difference between the first energy information and the second energy information. Specifically, taking a as the first energy information, b as the second energy information, and IL as the insertion loss as an example, IL = a - b.

[0084] It should be noted that by determining the first energy information of the first target signal in the problem frequency band in the second sub-signal as described above by the spectrum analyzer 151, the quantization of the original signal in the problem frequency band before the insertion filter 152 can be achieved. By determining the second energy information of the second target signal in the problem frequency band in the fourth sub-signal by the spectrum analyzer 151, the quantization of the filtered signal in the problem frequency band after the insertion filter 152 can be achieved. Then, by determining the insertion loss of the filter 152 based on the first energy information and the second energy information, the quantization of the suppression effect of the filter 152 can be achieved, and the suppression effect of the filter 152 can be dynamically evaluated.

[0085] In one embodiment, as Figures 3 to 6 shown, the test module 15 further includes a power splitter 153. Among them, the power splitter 153 includes a first port 1531 connected to the radio frequency module 111, a second port 1532 connected to the spectrum analyzer 151, and a third port 1533 that can be connected to the signal receiving module 14 or the filter ************************** Figure 4 Schematically shows that the third port 1533 is communicatively connected to the signal receiving module 14, Figure 5 Schematically shows that the third port 1533 is communicatively connected to the filter 152.

[0086] In the case where the third port 1533 is connected to the signal receiving module 14, the power splitter 153 is used for:

[0087] Receiving the first noise-added signal as described above from the signal receiving module 14 through the third port 1533;

[0088] Generating the first sub-signal and the second sub-signal as described above based on the first noise-added signal;

[0089] Sending the first sub-signal to the radio frequency module 111 through the first port 1531, and sending the second sub-signal to the spectrum analyzer 151 through the second port 1532.

[0090] In addition, in the case where the third port 1533 is connected to the filter 152, the power splitter 153 is used for:

[0091] Receiving the first filtered signal as described above from the filter 152 through the third port 1533;

[0092] Generating the third sub-signal and the fourth sub-signal as described above based on the first filtered signal;

[0093] Send a third sub-signal to the radio frequency module 111 through the first port 1531, and send a fourth sub-signal to the spectrum analyzer 151 through the second port 1532.

[0094] By making the test module 15 include a power splitter 153, the power splitter 153 can be used to divide the received signal into two signals and output them to the radio frequency module 111 and the spectrum analyzer 151 respectively, so as to achieve quantitative measurement. In addition, by making the filter 152 communicate with the power splitter 153 and the signal receiving module 14, it can be used for rapid rectification of problems.

[0095] It should be noted that the power splitter 153 can evenly divide the received signal and output it to the radio frequency module 111 and the spectrum analyzer 151 respectively. When the test module 15 includes the power splitter 153, the test result may be smaller than the actual value (such as half of the actual value). This problem can be solved by increasing the energy of the signal generator (such as the first signal generator 121 and the second signal generator 131). As an example, if the energy is power, increase the first preset value (such as 3 dB, etc.); if the energy is electric field or magnetic field, increase the second preset value (such as 6 dB, etc.). Among them, dB is the unit, representing decibel.

[0096] In one implementation, when the frequency band of the spectrum analyzer 151 is adjusted to the problem frequency band, the test module 15 is further configured to:

[0097] Adjust the parameters of the filter 152 based on the signal energy change on the spectrum analyzer 151 and the working state of the device under test 11;

[0098] Detect the working state of the device under test 11;

[0099] In response to the detected working state meeting the set electromagnetic compatibility requirements, end the parameter adjustment of the filter.

[0100] Among them, the adjustable parameters of the filter 152 include, for example, cut-off frequency and / or order, etc. The working state of the device under test 11 includes, for example, function abnormality (such as disconnection) and / or performance degradation (such as packet loss), etc. The content of the electromagnetic compatibility requirements can be set according to actual needs and will not be specifically limited here.

[0101] It should be noted that after each adjustment of the parameters of the filter 152, the energy of the signal received by the spectrum analyzer 151 will change. Adjusting the parameters of the filter 152 based on the signal energy change on the spectrum analyzer 151 and the working state of the device under test 11 can avoid blindly replacing the filter, shorten the rectification cycle, and effectively improve the test and rectification efficiency.

[0102] In addition, the test module 15 is further configured to: in response to the detected operating state not meeting the set electromagnetic compatibility requirements, continue to execute the step of adjusting the parameters of the filter 152 based on the signal energy change on the spectrum analyzer 151 and the operating state of the device under test 11. Generally speaking, the test module 15 can adjust the parameters of the filter 152 based on the signal energy change on the spectrum analyzer 151 and the operating state of the device under test 11 until the operating state of the device under test 11 meets the set electromagnetic compatibility requirements.

[0103] In one embodiment, to ensure that the added filter 152 has no impact on the operating frequency band of the RF module 111, when the detected operating state meets the set electromagnetic compatibility requirements, the test module 15 is further configured to:

[0104] After the frequency band of the spectrum analyzer 151 is adjusted from the problem frequency band to the operating frequency band of the RF module 111, the filter 152 receives the third noise-added signal sent by the signal receiving module 14 and performs filtering processing on the third noise-added signal to obtain a second filtered signal; wherein, the third noise-added signal is the operating signal with the interference signal superimposed.

[0105] Generate a fifth sub-signal and a sixth sub-signal based on the second filtered signal, send the fifth sub-signal to the RF module 111, and send the sixth sub-signal to the spectrum analyzer 151.

[0106] The spectrum analyzer 151 determines the third energy information of the third target signal in the operating frequency band in the sixth sub-signal.

[0107] After the filter 152 is disconnected from the signal receiving module 14, receive the fourth noise-added signal sent by the signal receiving module 14; wherein, the fourth noise-added signal is the operating signal with the interference signal superimposed.

[0108] Generate a seventh sub-signal and an eighth sub-signal based on the fourth noise-added signal, send the seventh sub-signal to the RF module 111, and send the eighth sub-signal to the spectrum analyzer 151.

[0109] The spectrum analyzer 151 determines the fourth energy information of the fourth target signal in the operating frequency band in the eighth sub-signal.

[0110] Based on the third energy information and the fourth energy information, determine the impact of the filter 152 on the operating frequency band.

[0111] In response to the impact being no impact, end the parameter adjustment of the filter 152.

[0112] Among them, the third energy information and the fourth energy information can both be amplitudes. When determining the influence of the filter 152 on the operating frequency band, for example, the insertion loss of the filter 152 can be determined based on the third energy information and the fourth energy information. If the insertion loss is less than a preset loss threshold, it is determined that the filter 152 has no influence on the operating frequency band. If the insertion loss is greater than or equal to the loss threshold, it is determined that the filter 152 has an influence on the operating frequency band.

[0113] In addition, when the influence situation is determined to be influential, the test module 15 can further execute the step of adjusting the parameters of the filter 152 based on the signal energy change on the spectrum analyzer 151 and the operating state of the device under test 11. Thus, the test module 15 can adjust the parameters of the filter 152 based on the signal energy change on the spectrum analyzer 151 and the operating state of the device under test 11 until the operating state of the device under test 11 meets the set electromagnetic compatibility requirements and ensures that the filter 152 has no influence on the operating frequency band of the radio frequency module 111.

[0114] In one implementation, when the operating state of the device under test 11 meets the set electromagnetic compatibility requirements and the filter 152 has no influence on the operating frequency band of the radio frequency module 111, the insertion loss of the filter 152 can also be determined. For example, the frequency band of the spectrum analyzer 151 can be adjusted from the operating frequency band to the problem frequency band, and the spectrum analyzer 151 quantifies the original signal in the problem frequency band before inserting the filter 152 and the filtered signal in the problem frequency band after inserting the filter 152. Then, based on the quantization results before and after inserting the filter 152, the insertion loss of the filter 152 is determined. Among them, the specific implementation process can refer to the relevant descriptions in the previous text and will not be elaborated here.

[0115] In one implementation, as Figure 6 shown, the radiated immunity test system can further include an anechoic chamber 16. The spectrum analyzer 151, the first signal generator 121, and the second signal generator 131 are all placed outside the anechoic chamber 16 to prevent affecting the test. The device under test 11, and at least some components (such as the signal receiving module 14, the filter 152, the power splitter 153, the first radio frequency antenna 122, the second radio frequency antenna 132) in the radiated immunity test system other than the spectrum analyzer 151, the first signal generator 121, the second signal generator 131, and the anechoic chamber 16 are all placed inside the anechoic chamber 16.

[0116] In one embodiment, as Figure 6 shown, the radiated immunity test system includes a first signal transmitting module 12, a second signal transmitting module 13, a signal receiving module 14, a test module 15, and an anechoic chamber 16.

[0117] Among them, the first signal transmitting module 12 includes a first signal generator 121 and a first radio frequency antenna 122 which are communicatively connected. The first signal generator 121 is used to generate the working signal required by the radio frequency module 111 in the device under test 11, and the first radio frequency antenna 122 is used to transmit the working signal.

[0118] The second signal transmitting module 13 includes a second signal generator 131 and a second radio frequency antenna 132 which are communicatively connected. The second signal generator 131 is used to generate an interference signal, and the second radio frequency antenna 132 is used to transmit the interference signal.

[0119] The signal receiving module 14 is used to receive the first noise-added signal, and the first noise-added signal is the working signal after the interference signal is superimposed.

[0120] The test module 15 includes a spectrum analyzer 151, a pluggable filter 152 and a power splitter 153. Among them, the spectrum analyzer 151, the first signal generator 121 and the second signal generator 131 are all placed outside the anechoic chamber 16, and the device under test 11, the signal receiving module 14, the filter 152, the power splitter 153, the first radio frequency antenna 122 and the second radio frequency antenna 132 are all placed inside the anechoic chamber 16.

[0121] The power splitter 153 includes a first port 1531 connected to the radio frequency module 111, a second port 1532 connected to the spectrum analyzer 151, and a third port 1533 that can be connected to the signal receiving module 14 or the filter 152. When the third port 1533 is connected to the signal receiving module 14, the power splitter 153 is used to receive the first noise-added signal from the signal receiving module 14 through the third port 1533, generate a first sub-signal and a second sub-signal based on the first noise-added signal, send the first sub-signal to the radio frequency module 111 through the first port 1531, and send the second sub-signal to the spectrum analyzer 151 through the second port 1532. Among them, the first noise-added signal is the working signal after the interference signal is superimposed. The spectrum analyzer 151 determines the first energy information of the first target signal in the problem frequency band in the second sub-signal, and the first energy information is used to evaluate the radiation immunity of the radio frequency module 111.

[0122] The radiation immunity test system provided by the embodiments of the present application can quantitatively display the frequency, bandwidth, and amplitude of the interference by introducing a spectrum analyzer 151 and a power splitter 153. After the filter 152 is inserted, the spectrum analyzer 151 can compare the amplitude differences of the signals before and after filtering, directly quantify the filtering suppression effect, and can also directly display through the spectrum analyzer 151 whether the working frequency band of the radio frequency module 111 is affected after the filter 152 is inserted. Based on this test system, a set of EMC test rectification methods are formed, which can solve the defects of relying on empirical debugging and unable to perform data analysis in traditional EMC rectification, and significantly improve the efficiency and accuracy of problem positioning and test rectification.

[0123] Figure 7 It is a flowchart of a radiation immunity test method provided by an embodiment of the present application. This method is executed by a test module 15 in a radiation immunity test system. The system further includes a first signal transmitting module 12 for transmitting a working signal required by a radio frequency module 111 in a device under test 11, and a second signal transmitting module 13 for transmitting an interference signal. The test module 15 is communicatively connected to the radio frequency module 111. The method includes the following steps:

[0124] S701: Obtain a first noise-added signal, where the first noise-added signal is a working signal after an interference signal is superimposed;

[0125] S703: Generate a first sub-signal and a second sub-signal based on the first noise-added signal, and send the first sub-signal to the radio frequency module 111;

[0126] S705: Determine first energy information of a first target signal in a problem frequency band in the second sub-signal; wherein, the first energy information is used to evaluate the radiation immunity of the radio frequency module 111.

[0127] Wherein, Figure 7 Other aspects and implementation details of the radiation immunity test method shown are the same as or similar to those of the radiation immunity test system described above, and will not be elaborated here.

[0128] Figure 8 It is another flowchart of a radiation immunity test method provided by an embodiment of the present application. This method is executed by a test module 15 in a radiation immunity test system. The system further includes a first signal transmitting module 12 for transmitting a working signal required by a radio frequency module 111 in a device under test 11, a second signal transmitting module 13 for transmitting an interference signal, and a signal receiving module 14. The test module 15 is communicatively connected to the radio frequency module 111 and the signal receiving module 14. The test module 15 includes a spectrum analyzer 151 and a pluggable filter 152. The method includes the following steps:

[0129] S801: Receive a first noise-added signal sent by the signal receiving module 14, where the first noise-added signal is a working signal after an interference signal is superimposed;

[0130] S803: Generate a first sub-signal and a second sub-signal based on the first noise-added signal, send the first sub-signal to the radio frequency module 111, and send the second sub-signal to the spectrum analyzer 151;

[0131] S805: Have the spectrum analyzer 151 determine first energy information of a first target signal in a problem frequency band in the second sub-signal; wherein, the first energy information is used to evaluate the radiation immunity of the radio frequency module 111;

[0132] S807: When the filter 152 is connected to the signal receiving module 14, the filter 152 receives the second noise-added signal sent by the signal receiving module 14 and filters the second noise-added signal to obtain the first filtered signal; wherein, the second noise-added signal is the working signal with the interference signal superimposed thereon.

[0133] S809: Generate a third sub-signal and a fourth sub-signal based on the first filtered signal, send the third sub-signal to the RF module 111, and send the fourth sub-signal to the spectrum analyzer 151.

[0134] S811: The spectrum analyzer 151 determines the second energy information of the second target signal in the problem frequency band in the fourth sub-signal.

[0135] S813: Determine the insertion loss of the filter 152 based on the first energy information and the second energy information.

[0136] Further, the radiation immunity test method further includes step S815 as Figure 8 shown. In step S815, based on the signal energy change on the spectrum analyzer 151 and the working state of the device under test 11, the parameters of the filter 152 are adjusted until the working state of the device under test 11 meets the set electromagnetic compatibility requirements.

[0137] Wherein, Figure 8 other aspects and implementation details of the radiation immunity test method shown are the same as or similar to those of the radiation immunity test system described above, and will not be elaborated here.

[0138] The embodiment of the present application further provides a computer device, which includes a memory and a processor. A computer program is stored in the memory. When the processor executes the computer program, the radiation immunity test method as Figure 7 or Figure 8 described is implemented.

[0139] The embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the radiation immunity test method as Figure 7 or Figure 8 described is implemented.

[0140] The embodiment of the present application further provides a computer program product, including a computer program / instructions. When the computer program / instructions are executed by a processor, the radiation immunity test method as Figure 7 or Figure 8 described is implemented.

[0141] As described above, this is only a partial implementation manner of the embodiments of this application, and it does not impose any formal restrictions on this application. The protection scope of the embodiments of this application is not limited thereto. Any simple modifications, equivalent changes, and decorations that can be easily thought of by those skilled in the art within the technical scope disclosed by the embodiments of this application should be covered within the protection scope of the embodiments of this application.

Claims

1. A radiation immunity test system, characterized in that, Comprising: A first signal transmitting module (12) for transmitting a working signal required by a radio frequency module (111) in a device under test (11); A second signal transmitting module (13) for transmitting an interference signal; A test module (15) communicatively connected to the radio frequency module (111) for obtaining a first noise-added signal, generating a first sub-signal and a second sub-signal based on the first noise-added signal, sending the first sub-signal to the radio frequency module (111), and determining first energy information of a first target signal in a problem frequency band in the second sub-signal; wherein, the first noise-added signal is the working signal with the interference signal superimposed thereon, and the first energy information is used to evaluate the radiation immunity of the radio frequency module (111).

2. The system according to claim 1, characterized in that, The test module (15) includes a spectrum analyzer (151); The test module (15) for determining the first energy information of the first target signal in the problem frequency band in the second sub-signal includes: Sending the second sub-signal to the spectrum analyzer (151) to determine the first energy information through the spectrum analyzer (151).

3. The system according to claim 2, wherein The system further includes: A signal receiving module (14) communicatively connected to the test module (15) for receiving the first noise-added signal and sending the first noise-added signal to the test module (15).

4. The system according to claim 3, wherein The test module (15) further includes a pluggable filter (152); The test module (15) is further configured to: When the filter (152) is connected to the signal receiving module (14), receive a second noise-added signal sent by the signal receiving module (14) through the filter (152), and perform filtering processing on the second noise-added signal to obtain a first filtered signal; wherein, the second noise-added signal is the working signal with the interference signal superimposed thereon; Generate a third sub-signal and a fourth sub-signal based on the first filtered signal, send the third sub-signal to the radio frequency module (111), and send the fourth sub-signal to the spectrum analyzer (151); Have the spectrum analyzer (151) determine second energy information of a second target signal in the problem frequency band in the fourth sub-signal; Determine the insertion loss of the filter (152) based on the first energy information and the second energy information.

5. The system according to claim 4, wherein The test module (15) further includes a power splitter (153), the power splitter (153) includes a first port (1531) connected to the radio frequency module (111), a second port (1532) connected to the spectrum analyzer (151), and a third port (1533) capable of connecting to the signal receiving module (14) or the filter (152).

6. The system according to claim 5, wherein When the third port (1533) is connected to the signal receiving module (14), the power splitter (153) is configured to: Receive the first noise-added signal from the signal receiving module (14) through the third port (1533); Generate the first sub-signal and the second sub-signal based on the first noise-added signal; Send the first sub-signal to the radio frequency module (111) through the first port (1531), and send the second sub-signal to the spectrum analyzer (151) through the second port (1532).

7. The system according to claim 5, wherein When the third port (1533) is connected to the filter (152), the power splitter (153) is configured to: Receive the first filtered signal from the filter (152) through the third port (1533); Generate the third sub-signal and the fourth sub-signal based on the first filtered signal; Send the third sub-signal to the radio frequency module (111) through the first port (1531), and send the fourth sub-signal to the spectrum analyzer (151) through the second port (1532).

8. The system according to any one of claims 4-7, characterized in that The frequency band of the spectrum analyzer (151) is adjusted to the problem frequency band; The test module (15) is further configured to: Adjust the parameters of the filter (152) based on the signal energy change on the spectrum analyzer (151) and the working state of the device under test (11); Detect the working state of the device under test (11); In response to the detected working state meeting the set electromagnetic compatibility requirements, end the parameter adjustment of the filter.

9. The system according to claim 8, wherein When the detected working state meets the electromagnetic compatibility requirements, the test module (15) is further configured to: After the frequency band of the spectrum analyzer (151) is adjusted from the problem frequency band to the working frequency band of the radio frequency module (111), the filter (152) receives the third noise-added signal sent by the signal receiving module (14) and filters the third noise-added signal to obtain a second filtered signal; wherein, the third noise-added signal is the working signal with the interference signal superimposed; Generate a fifth sub-signal and a sixth sub-signal based on the second filtered signal, send the fifth sub-signal to the radio frequency module (111), and send the sixth sub-signal to the spectrum analyzer (151); The spectrum analyzer (151) determines the third energy information of the third target signal in the sixth sub-signal that is in the working frequency band; After the filter (152) is disconnected from the signal receiving module (14), receive the fourth noise-added signal sent by the signal receiving module (14); wherein, the fourth noise-added signal is the working signal with the interference signal superimposed; Generate a seventh sub-signal and an eighth sub-signal based on the fourth noise-added signal, send the seventh sub-signal to the radio frequency module (111), and send the eighth sub-signal to the spectrum analyzer (151); The spectrum analyzer (151) determines the fourth energy information of the fourth target signal in the eighth sub-signal that is in the working frequency band; Based on the third energy information and the fourth energy information, determine the influence of the filter (152) on the working frequency band; In response to the influence being no influence, end the parameter adjustment of the filter (152).

10. A radiation immunity test method, characterized in that, Performed by a test module (15) in a radiation immunity test system, the system further comprising a first signal transmitting module (12) for transmitting a working signal required by a radio frequency module (111) in a device under test (11), and a second signal transmitting module (13) for transmitting an interference signal, the test module (15) being communicatively connected to the radio frequency module (111), the method comprising: Obtaining a first noise-added signal, the first noise-added signal being the working signal after the interference signal is superimposed; Generating a first sub-signal and a second sub-signal based on the first noise-added signal, and sending the first sub-signal to the radio frequency module (111); Determining first energy information of a first target signal in a problem frequency band in the second sub-signal; wherein the first energy information is used to evaluate the radiation immunity of the radio frequency module (111).

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