Test device and test method

Abstract

The invention discloses a test device and a test method. The testing device comprises a testing cavity, a testing cavity is arranged in the testing cavity, and the testing cavity is used for placing to-be-tested equipment; an antenna; the radio frequency module comprises a signal generator and a signal amplifier, the signal amplifier is connected with the signal generator and the antenna, the signal generator is used for outputting a radio frequency signal, the signal amplifier is used for amplifying the radio frequency signal, and the antenna is used for feeding the amplified radio frequency signal into the test cavity. Wherein the signal generator is selected from at least one of an ultra-wideband signal generator and a multi-band signal generator; the signal amplifier is selected from at least one of an ultra-wideband signal amplifier and a multi-band signal amplifier; the antenna is selected from at least one of an ultra-wideband antenna, a multi-frequency-band antenna and a single-frequency-band antenna, under the condition that the antenna is the single-frequency-band antenna, the testing device comprises a plurality of single-frequency-band antennas, and each single-frequency-band antenna corresponds to a testing frequency band. The test device can meet the test requirements of more frequency bands.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment testing, and in particular to a testing device and a testing method. Background Art

[0002] In the relevant technology, the components of electronic equipment need to have a certain electromagnetic interference resistance capability, namely EMS. Otherwise, in a strong electromagnetic environment, the electronic equipment will experience abnormal situations such as control board chip damage, program crash, display screen flickering, button false triggering, etc., which requires these components of the electronic equipment to be able to withstand a certain amount of electromagnetic interference.

[0003] Currently, in the process of testing the electromagnetic anti-interference capability of components of electronic equipment, a single-band radio frequency signal is often used to test the components of the electronic equipment. However, the single-band radio frequency signal cannot meet the testing requirements. Summary of the invention

[0004] The embodiments of the present invention provide a testing device and a testing method.

[0005] A testing device according to an embodiment of the present invention is used to test the electromagnetic anti-interference capability of a device under test, and the testing device comprises:

[0006] A test cavity, wherein a test cavity is provided in the test cavity, and the test cavity is used to place the device to be tested;

[0007] antenna, and;

[0008] A radio frequency module, wherein the radio frequency module comprises a signal generator and a signal amplifier, wherein the signal amplifier is connected to the signal generator and the antenna, wherein the signal generator is used to output a radio frequency signal, wherein the signal amplifier is used to amplify the radio frequency signal, and wherein the antenna is used to feed the amplified radio frequency signal into the test cavity;

[0009] Wherein, the signal generator is selected from at least one of an ultra-wideband signal generator and a multi-band signal generator;

[0010] The signal amplifier is selected from at least one of an ultra-wideband signal amplifier and a multi-band signal amplifier;

[0011] The antenna is selected from at least one of an ultra-wideband antenna, a multi-band antenna and a single-band antenna. When the antenna is a single-band antenna, the test device includes a plurality of the single-band antennas, each of which corresponds to a test frequency band.

[0012] In the above-mentioned test device, through the combination of signal generator, signal amplifier and antenna, multi-band RF signals (electromagnetic wave signals) are fed into the test cavity, which can more realistically simulate the electromagnetic radiation environment of the device under test and meet the testing requirements of more frequency bands.

[0013] In some embodiments, the ultra-wideband signal generator is used to generate a radio frequency signal located in a first broadband, the ultra-wideband signal amplifier is used to amplify a radio frequency signal located in a second broadband, and the ultra-wideband antenna is used to radiate a radio frequency signal located in a third broadband, and the second broadband and the third broadband at least include the first broadband.

[0014] In some embodiments, the first broadband is 20 MHz to 40 GHz.

[0015] In some embodiments, the signal generator is the ultra-wideband signal generator, the signal amplifier is the ultra-wideband signal amplifier, the antenna is the multi-band antenna, or;

[0016] The signal generator is the ultra-wideband signal generator, the signal amplifier is the ultra-wideband signal amplifier, and the antenna is the single-band antenna, or;

[0017] The signal generator is the ultra-wideband signal generator, the signal amplifier is the multi-band signal amplifier, and the antenna is the ultra-wideband antenna, or;

[0018] The signal generator is the ultra-wideband signal generator, the signal amplifier is the multi-band signal amplifier, and the antenna is the multi-band antenna, or;

[0019] The signal generator is the ultra-wideband signal generator, the signal amplifier is the multi-band signal amplifier, and the antenna is the single-band antenna, or;

[0020] The signal generator is the ultra-wideband signal generator, the signal amplifier is the ultra-wideband signal amplifier, and the antenna is the ultra-wideband antenna.

[0021] In some embodiments, the signal generator is the multi-band signal generator, the signal amplifier is the ultra-wideband signal amplifier, the antenna is the multi-band antenna, or;

[0022] The signal generator is the multi-band signal generator, the signal amplifier is the ultra-wideband signal amplifier, and the antenna is the single-band antenna, or;

[0023] The signal generator is the multi-band signal generator, the signal amplifier is the ultra-wideband signal amplifier, and the antenna is the ultra-wideband antenna, or;

[0024] The signal generator is the multi-band signal generator, the signal amplifier is the multi-band signal amplifier, and the antenna is the ultra-wideband antenna, or;

[0025] The signal generator is the multi-band signal generator, the signal amplifier is the multi-band signal amplifier, and the antenna is the multi-band antenna.

[0026] In some embodiments, the testing device includes an electrical chamber and a heat dissipation assembly, the electrical chamber is located outside the testing cavity, the heat dissipation assembly and the RF module are located in the electrical chamber, and the heat dissipation assembly is used to dissipate heat from the RF module.

[0027] In some embodiments, the heat dissipation assembly includes an air guide and a heat dissipation motor, the air guide covers the radio frequency module, the air guide is provided with an air inlet and an air outlet, and the air inlet is arranged corresponding to the heat dissipation motor.

[0028] In certain embodiments, the testing device further includes a power supply module, wherein the power supply module is disposed above the air guide member, and the power supply module and the air guide member are thermally connected.

[0029] A testing method according to an embodiment of the present invention comprises:

[0030] Determine a test range of the device under test, wherein the test range includes multiple test frequency bands;

[0031] Powering on the test device and the device to be tested located in the test cavity of the test device;

[0032] Selecting one of the test frequency bands from the multiple test frequency bands, and performing a test on the selected test frequency band;

[0033] When the test of the current test frequency band is completed, selecting another test frequency band from the multiple test frequency bands and performing the test of the selected test frequency band until the test of all test frequency bands is completed;

[0034] Executing the test of the selected test frequency band includes: setting the parameters of the radio frequency signal according to the selected test frequency band, controlling the signal generator of the test device to output the radio frequency signal according to the parameters of the radio frequency signal, amplifying the radio frequency signal by using the signal amplifier of the test device, and feeding the amplified radio frequency signal into the test cavity by using the antenna of the test device to interfere with the device under test;

[0035] Wherein, the signal generator is selected from at least one of an ultra-wideband signal generator and a multi-band signal generator;

[0036] The signal amplifier is selected from at least one of an ultra-wideband signal amplifier and a multi-band signal amplifier;

[0037] The antenna is selected from at least one of an ultra-wideband antenna, a multi-band antenna and a single-band antenna. When the antenna is the single-band antenna, the test device includes a plurality of the single-band antennas, each of which corresponds to one test frequency band.

[0038] In the above test method, multi-band RF signals (electromagnetic wave signals) are fed into the test cavity through a combination of a signal generator, a signal amplifier and an antenna, which can more realistically simulate the electromagnetic radiation environment of the device under test and meet the test requirements of more frequency bands.

[0039] In some implementations, the testing method includes: outputting a test report after completing the testing of all test frequency bands.

[0040] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0042] Figure 1 It is a schematic structural diagram of a testing device according to an embodiment of the present invention;

[0043] Figure 2 It is an exploded schematic diagram of a testing device according to an embodiment of the present invention;

[0044] Figure 3 A schematic diagram of a module of a testing device according to an embodiment of the present invention;

[0045] Figure 4 A diagram showing the combination types of a signal generator and a signal amplifier according to an embodiment of the present invention;

[0046] Figure 5 A diagram showing the types of antenna combinations according to an embodiment of the present invention;

[0047] Figures 6 to 8Schematic diagram of the testing method according to the embodiment of the present invention.

[0048] Component Symbols:

[0049] Test device-100, test cavity-12, antenna-14, radio frequency module-16, test cavity-18, signal generator-160, signal amplifier-170, ultra-wideband signal generator-161, multi-band signal generator-162, ultra-wideband signal amplifier-171, multi-band signal amplifier-172, ultra-wideband antenna-141, multi-band antenna-142, single-band antenna-143, base-20, control panel-22, control panel-24, door body-26, opening-28, electrical room-30, heat dissipation assembly-32, air guide-320, heat dissipation motor-321, air inlet-322, air outlet-323, air inlet end-324, air outlet end-325, power supply module-34. DETAILED DESCRIPTION

[0050] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0054] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0055] Please refer to Figures 1 to 5A test device 100 provided in an embodiment of the present invention is used to test the electromagnetic anti-interference capability of a device under test, and the test device 100 includes a test cavity 12, an antenna 14, and a radio frequency module 16. A test cavity 18 is provided in the test cavity 12, and the test cavity 18 is used to place the device under test. The radio frequency module 16 includes a signal generator 160 and a signal amplifier 170, and the signal amplifier 170 is connected to the signal generator 160 and the antenna 14. The signal generator 160 is used to output a radio frequency signal, and the signal amplifier 170 is used to amplify the radio frequency signal, and the antenna 14 is used to feed the amplified radio frequency signal into the test cavity 18. The signal generator 160 is selected from at least one of an ultra-wideband signal generator 161 and a multi-band signal generator 162. The signal amplifier 170 is selected from at least one of an ultra-wideband signal amplifier 171 and a multi-band signal amplifier 172. The antenna 14 is selected from at least one of an ultra-wideband antenna 141, a multi-band antenna 142 and a single-band antenna 143. When the antenna 14 is the single-band antenna 143, the test device 100 includes a plurality of the single-band antennas 143, each of which corresponds to a test frequency band.

[0056] In the above-mentioned test device 100, through the combination of the signal generator 160, the signal amplifier 170 and the antenna 14, multi-band radio frequency signals (electromagnetic wave signals) are fed into the test cavity 18, which can more realistically simulate the electromagnetic radiation environment of the device under test and meet the testing requirements of more frequencies.

[0057] Specifically, in one embodiment, the device under test may include, but is not limited to, an electric control board, a chip, a circuit board, a display screen or other electronic equipment of the device under test, which is not specifically limited herein. During the test, the device under test may be placed in the test cavity 18, and the radio frequency signal is fed into the test cavity 18 via the antenna 14 and radiated to the device under test to test the electromagnetic susceptibility (EMS) of the device under test.

[0058] Optionally, the test cavity 12 is made of a material having the ability to shield radio frequency signals, such as a metal cavity. Further, the test cavity 12 may include a body made of plastic material and a metal layer covering the surface of the body to reduce manufacturing costs and reduce weight. Further, optionally, the wall of the test cavity 12 close to the test cavity 18 may be covered with an absorbing layer to absorb radio frequency signals radiated to the wall and reduce reflection of radio frequency signals.

[0059] The radio frequency signal is an electromagnetic wave signal, and the frequency band of the radio frequency signal includes but is not limited to the microwave frequency band. The radio frequency module 16 includes a signal generating circuit, an incident power detection circuit and a reflected power detection circuit. The signal generating circuit includes components such as a signal generator 160, a signal amplifier 170, a circulator, and a phase shifter. The signal generator 160 may include a crystal oscillator. The incident power detection circuit is used to detect the power of the radio frequency signal incident into the test cavity 18. The radio frequency module 16 can adjust the radio frequency signal output by the signal generating circuit according to the data fed back by the incident power detection circuit, so that the power of the radio frequency signal incident into the test cavity 18 is close to or equal to the target power.

[0060] The reflected power detection circuit is used to detect the power of the RF signal reflected by the test cavity 18. The RF module 16 can determine the energy of the RF signal absorbed by the device under test based on the data fed back by the incident power detection circuit and the reflected power detection circuit.

[0061] Please refer to Figure 2 The test device 100 may include a base 20, which is mounted on a side plate (such as a top plate) of the test cavity 12, and an antenna 14 is mounted on the base 20. Optionally, the antenna 14 may extend wholly or partially into the test cavity 18. The antenna 14 is selected from at least one of an ultra-wideband antenna 141, a multi-band antenna 142, and a single-band antenna 143.

[0062] exist Figure 1 and Figure 2 In the test device 100, a control panel 22 is installed on the test cavity 12, and a control panel 24 is installed on the control panel 22. The control panel 22 is connected to the RF module 16. The control panel 22 may include input components such as buttons and touch screens. Users can set the parameters of the RF signal through the input components, such as the frequency, phase, power, etc. of the RF signal, so as to generate a variety of RF signals within a certain frequency band, and can simulate the complex electromagnetic interference scenarios of the device under test in the actual environment. The user can input relevant instructions through the input components, and the control panel 24 controls the operation of the test device 100 according to the instructions, such as controlling the start and stop of the corresponding function.

[0063] The test device 100 further includes a door 26. An opening 28 is provided on one side of the test chamber 18. The door 26 is rotatably mounted at the opening 28 to open or close the opening 28. When the door 26 opens the opening 28, the user can take and place the device to be tested. When the door 26 is closed, the test can be performed. The door 26 is used to prevent the radio frequency signal from leaking from the test chamber 18 into the air, thereby improving the safety of the test process.

[0064] The RF module 16 also includes a controller, which controls the signal generator 160 to generate a corresponding RF signal according to the set parameters of the RF signal. The RF signal is fed into the test cavity 18 through the antenna 14 and radiated to the device under test. More specifically, the controller can control the signal generator 160 to operate in different frequency bands, thereby selectively outputting a RF signal of a certain frequency band in multiple frequency bands.

[0065] During the test, the device under test can be powered on. If the device under test can work normally under the interference of the current RF signal, it means that the device under test has the corresponding electromagnetic anti-interference ability or has a high electromagnetic anti-interference ability under the current RF signal. If the device under test cannot work normally under the interference of the current RF signal, it is determined that the device under test is abnormal.

[0066] In the implementation manner of the present invention, ultra-wideband refers to an ultra-wideband including multiple frequency bands, for example, the ultra-wideband may be 30MHz to 18GHz or 30MHz to 40GHz, etc. 30MHz to 18GHz may include multiple test frequency bands, and 30MHz to 40GHz may also include multiple test frequency bands. The number of test frequency bands is determined according to actual needs and is not specifically limited here.

[0067] In the embodiment of the present invention, multi-band refers to multiple test bands. Single-band refers to a single test band. Single-band antenna 143 refers to a radio frequency signal that can radiate a single test band. Therefore, when antenna 14 is a single-band antenna 143, test device 100 includes multiple single-band antennas 143, each of which corresponds to a test band to meet the test requirements of multiple bands.

[0068] In one embodiment, the signal generator 160 and the signal amplifier 170 may constitute a radio frequency solid-state source, and the radio frequency solid-state source may be an ultra-wideband radio frequency solid-state source.

[0069] The signal generator 160 is selected from at least one of an ultra-wideband signal generator 161 and a multi-band signal generator 162. In one embodiment, the signal generator 160 is an ultra-wideband signal generator 161. In one embodiment, the signal generator 160 is a multi-band signal generator 162. In one embodiment, the signal generator 160 includes an ultra-wideband signal generator 161 and a multi-band signal generator 162. In an actual test process, one of the ultra-wideband signal generator 161 and the multi-band signal generator 162 can be used as the main signal generator 160, and the other can be used as the backup signal generator 160.

[0070] The signal amplifier 170 may be a power amplifier, and the signal amplifier 170 may be selected from at least one of an ultra-wideband signal amplifier 171 and a multi-band signal amplifier 172. In one embodiment, the signal amplifier 170 is an ultra-wideband signal amplifier 171. In one embodiment, the signal amplifier 170 is a multi-band signal amplifier 172. In one embodiment, the signal amplifier 170 includes an ultra-wideband signal amplifier 171 and a multi-band signal amplifier 172. In an actual test process, one of the ultra-wideband signal amplifier 171 and the multi-band signal amplifier 172 may be used as the main signal amplifier 170, and the other may be used as the backup signal amplifier 170.

[0071] The antenna 14 is selected from at least one of an ultra-wideband antenna 141, a multi-band antenna 142, and a single-band antenna 143. In one embodiment, the antenna 14 is a single ultra-wideband antenna 141. In one embodiment, the antenna 14 is a single multi-band antenna 142. In one embodiment, the antenna 14 is a single-band antenna 143. In the case where the antenna 14 is the single-band antenna 143, the test device 100 includes a plurality of the single-band antennas 143, each of which corresponds to a test frequency band.

[0072] In one embodiment, the antenna 14 includes a single ultra-wideband antenna 141 and a single multi-band antenna 142. In the actual test process, one of the ultra-wideband antenna 141 and the multi-band antenna 142 can be used as the main antenna 14, and the other can be used as the backup antenna 14. In one embodiment, the antenna 14 includes a single ultra-wideband antenna 141 and a single-band antenna 143. The number of the single-band antenna 143 can be one or more, and can be used as a supplement to the ultra-wideband antenna 141. In one embodiment, the antenna 14 includes a single multi-band antenna 142 and a single-band antenna 143. The number of the single-band antenna 143 can be one or more, and can be used as a supplement to the multi-band antenna 142. In one embodiment, the antenna 14 includes a single ultra-wideband antenna 141, a single multi-band antenna 142 and a single-band antenna 143. The number of single-band antennas 143 can be one or more. A single-band antenna 143 can serve as a supplement to the ultra-wideband antenna 141 and the multi-band antenna 142. During actual testing, one of the multiple single-band antennas 143, the ultra-wideband antenna 141 and the multi-band antenna 142 can be used as the main antenna 14, and the other two can be used as backup antennas 14.

[0073] The ultra-wideband antenna 141 may include a segmented antenna 14 , a one-segment multi-frequency antenna 14 , a multi-slot antenna 14 , or an array antenna 14 .

[0074] Please refer to Figure 4 and Figure 5 , Figure 4 The signal generator 160 is a combination type of a signal amplifier 170 . The types of the signal generator 160 may include an ultra-wideband signal generator 161 and a multi-band signal generator 162 . The types of the signal amplifier (PA) 170 may include an ultra-wideband signal amplifier 171 and a multi-band signal amplifier 172 . Figure 5 The types of antennas 14 include ultra-wideband antennas 141, multi-band antennas 142, and single-band antennas 143. A specific combination is required to achieve multiple frequency outputs. Figure 4 and Figure 5 shown.

[0075] In some embodiments, the ultra-wideband signal generator 161 is used to generate a radio frequency signal located in a first broadband, the ultra-wideband signal amplifier 171 is used to amplify a radio frequency signal located in a second broadband, and the ultra-wideband antenna 141 is used to radiate a radio frequency signal located in a third broadband, and the second broadband and the third broadband at least include the first broadband.

[0076] In this way, it is possible to feed the radio frequency signal in the first broadband into the test cavity 18 .

[0077] Specifically, the first broadband may include multiple test frequency bands. During testing, one of the test frequency bands may be selected from the multiple test frequency bands, and then one or more specific frequencies may be selected from the selected test frequency bands, and then corresponding phase and power parameters may be set. The second broadband and the third broadband include at least the first broadband, so that the RF signal output by the signal generator 160 can be amplified by the signal amplifier 170 and then fed into the test cavity 18 via the antenna 14.

[0078] Optionally, the first broadband is the same as the second broadband and the third broadband.

[0079] In some embodiments, the first broadband is 20 MHz to 40 GHz.

[0080] In this way, the first broadband of 20MHz to 40GHz can basically meet the test requirements.

[0081] Specifically, the first broadband may include multiple test frequency bands, for example, the first broadband includes four test frequency bands: a first test frequency band 20MHz-100MHz, a second test frequency band 100MHz-1GHz, a third test frequency band 1GHz-2GHz and a fourth test frequency band 2GHz-40GHz.

[0082] It is understood that in other implementations, the first broadband may also include other test frequency bands, and is not limited to the above four test frequency bands. In other implementations, the first broadband is also not limited to 20 MHz to 40 GHz, and may be other frequency ranges.

[0083] In some embodiments, the signal generator 160 is the ultra-wideband signal generator 161 , the signal amplifier 170 is the ultra-wideband signal amplifier 171 , and the antenna 14 is the multi-band antenna 142 .

[0084] In this way, multi-band testing requirements can be met.

[0085] In some embodiments, the signal generator 160 is the ultra-wideband signal generator 161 , the signal amplifier 170 is the ultra-wideband signal amplifier 171 , and the antenna 14 is the single-band antenna 143 .

[0086] In this way, multi-band testing requirements can be met.

[0087] In some embodiments, the signal generator 160 is the ultra-wideband signal generator 161 , the signal amplifier 170 is the multi-band signal amplifier 172 , and the antenna 14 is the ultra-wideband antenna 141 .

[0088] In this way, multi-band testing requirements can be met.

[0089] In some implementations, the signal generator 160 is the ultra-wideband signal generator 161 , the signal amplifier 170 is the multi-band signal amplifier 172 , and the antenna 14 is the multi-band antenna 142 .

[0090] In this way, multi-band testing requirements can be met.

[0091] In some embodiments, the signal generator 160 is the ultra-wideband signal generator 161 , the signal amplifier 170 is the multi-band signal amplifier 172 , and the antenna 14 is the single-band antenna 143 .

[0092] In this way, multi-band testing requirements can be met.

[0093] In some embodiments, the signal generator 160 is the ultra-wideband signal generator 161 , the signal amplifier 170 is the ultra-wideband signal amplifier 171 , and the antenna 14 is the ultra-wideband antenna 141 .

[0094] In this way, multi-band testing requirements can be met.

[0095] In some embodiments, the signal generator 160 is the multi-band signal generator 162 , the signal amplifier 170 is the ultra-wideband signal amplifier 171 , and the antenna 14 is the multi-band antenna 142 .

[0096] In this way, multi-band testing requirements can be met.

[0097] In some embodiments, the signal generator 160 is the multi-band signal generator 162 , the signal amplifier 170 is the ultra-wideband signal amplifier 171 , and the antenna 14 is the single-band antenna 143 .

[0098] In this way, multi-band testing requirements can be met.

[0099] In some implementations, the signal generator 160 is the multi-band signal generator 162 , the signal amplifier 170 is the ultra-wideband signal amplifier 171 , and the antenna 14 is the ultra-wideband antenna 141 .

[0100] In this way, multi-band testing requirements can be met.

[0101] In some embodiments, the signal generator 160 is the multi-band signal generator 162 , the signal amplifier 170 is the multi-band signal amplifier 172 , and the antenna 14 is the ultra-wideband antenna 141 .

[0102] In this way, multi-band testing requirements can be met.

[0103] In some embodiments, the signal generator 160 is the multi-band signal generator 162 , the signal amplifier 170 is the multi-frequency signal amplifier 170 , and the antenna 14 is the multi-band antenna 142 .

[0104] In this way, multi-band testing requirements can be met.

[0105] In some embodiments, the testing device 100 includes an electrical chamber 30 and a heat dissipation assembly 32 , wherein the electrical chamber 30 is located outside the testing cavity 18 , the heat dissipation assembly 32 and the RF module 16 are located inside the electrical chamber 30 , and the heat dissipation assembly 32 is used to dissipate heat for the RF module 16 .

[0106] In this way, it is possible to avoid the temperature of the RF module 16 increasing and thus reducing the accuracy of the RF module 16 in adjusting the RF signal.

[0107] Specifically, the RF module 16 needs to output RF signals when working, and its temperature rises quickly. When the temperature of the RF module 16 is high, the internal components of the RF module 16 are affected by the high temperature, and the accuracy of regulating the RF signal will be reduced. By setting the heat dissipation component 32, when the temperature of the RF module 16 exceeds the temperature threshold, the heat dissipation component 32 can be started to dissipate heat for the RF module 16, thereby ensuring the accuracy of the RF module 16 in regulating the RF signal. At the same time, it can also prevent the components of the RF module 16 from aging too quickly due to excessive temperature, thereby reducing its failure rate and extending the service life of the RF module 16.

[0108] In one embodiment, the heat dissipation component 32 can use liquid cooling to dissipate heat for the RF module 16. In one embodiment, the heat dissipation component 32 can use air cooling to dissipate heat for the RF module 16. In one embodiment, the heat dissipation component 32 can use liquid cooling and air cooling to dissipate heat for the RF module 16.

[0109] The antenna 14 may also be at least partially disposed in the electrical room 30, and the heat dissipation assembly 32 may also dissipate heat for the antenna 14. It is understandable that the heat dissipation assembly 32 may dissipate heat for other components in the electrical room 30 in addition to dissipating heat for the RF module 16 and the antenna 14.

[0110] In some embodiments, the heat dissipation assembly 32 includes an air guide 320 and a heat dissipation motor 321 , the air guide 320 covers the RF module 16 , the air guide 320 is provided with an air inlet 322 and an air outlet 323 , and the air inlet 322 is arranged corresponding to the heat dissipation motor 321 .

[0111] In this way, the heat dissipation component 32 can dissipate heat from the RF module 16 by air cooling.

[0112] Specifically, the heat dissipation motor 321 can provide wind when working. The wind blown by the heat dissipation motor 321 enters the interior of the wind guide 320, which can take away the heat of the RF module 16 and cool it down. The air inlet 322 of the wind guide 320 is correspondingly arranged with the heat dissipation motor 321 so that the heat dissipation motor 321 can send the generated wind into the wind guide 320. After the wind takes away the heat of the RF module 16, it can be discharged from the air outlet 323 of the wind guide 320, thereby reducing the temperature of the RF module 16 and the electrical room 30.

[0113] exist Figure 2In the figure, the air guide 320 includes an air inlet end 324 and an air outlet end 325. The air inlet end 324 is provided with an air inlet 322, and the air outlet end 325 is provided with an air outlet 323. The area of ​​the air inlet 322 is larger than the area of ​​the air outlet 323. Along the direction from the air inlet end 324 to the air outlet end 325, the internal flow channel of the air guide 320 is in a gradually contracting shape, so that the wind can be accelerated in the air guide 320, so as to speed up the removal of heat from the RF module 16 and other components and parts, and improve the heat dissipation efficiency.

[0114] In some embodiments, the testing device 100 further includes a power supply module 34 , wherein the power supply module 34 is disposed above the air guide 320 , and the power supply module 34 and the air guide 320 are thermally connected.

[0115] In this way, the power supply module 34 can be cooled by the air guide member 320 .

[0116] Specifically, the power supply module 34 is electrically connected to various components and parts of the test device 100, including but not limited to the RF module 16, the control panel 22, the cooling fan, etc. The power supply module 34 can also be electrically connected to the socket in the test cavity 18, and the power plug of the device under test can be inserted into the socket, so that the power supply module 34 provides the device under test with the power (DC and / or AC) required for operation, so that the device under test can work, thereby testing the electromagnetic anti-interference ability of the device under test.

[0117] Therefore, the temperature rise of the power supply module 34 is also fast when it is working. To ensure the normal operation of the power supply module 34, the air guide 320 can dissipate the heat of the power supply module 34. When the heat dissipation fan is working, the efficiency of heat dissipation of the air guide 320 can be accelerated, further improving the heat dissipation efficiency of the power supply module 34. Optionally, the air guide 320 can be a metal part.

[0118] In summary, the implementation of the present invention can adopt an ultra-wideband RF module 16, and adopt an ultra-wideband signal generator 161, an ultra-wideband power amplifier or an ultra-wideband antenna 141 in the entire system architecture. Compared with a simple multi-segment combination method, it achieves the advantages of high integration, modular assembly, small size, and low cost, which greatly promotes the use of EMS testing technology of ultra-wideband RF module 16 in the civilian market. The signal generator 160 of the implementation of the present invention can be an ultra-wideband signal generator 161, using one device to replace two or more devices to provide the same signal excitation, and the signal amplifier 170 can be an ultra-wideband signal amplifier 171, using one amplifier to replace the original two or more amplifiers for signal amplification, so that it can generate enough broadband signals to meet different test requirements of users.

[0119] In addition, compared with large systems such as microwave darkrooms and TEM cells used in related technologies, the test device 100 of the embodiment of the present invention has a simple structure and miniaturization, which greatly reduces the system cost. Moreover, the entire test device 100 is easy to move and occupies a small space, and can detect the electromagnetic anti-interference ability of the device under test by simulating a complex electromagnetic interference environment.

[0120] The test chamber 18 can be made to have different volume sizes to adapt to different detection scenarios. In some examples, the volume of the test chamber 18 is 35L (liters), 70L or 150L, ​​which can be placed in devices of different sizes to be tested, expanding the scope of the detection object of the test device 100 and is also easy to carry. The outer dimensions of the 70L test device 100 can be 600mm*600mm*570mm. However, the present design is not limited to this. In other embodiments, the volume of the test chamber 18 can also be configured to other values, which is not limited to this. Further optionally, the spatial dimensions of the test chamber 18 can be 350mm*340mm*320mm, or 480mm*420mm*360mm, or 650mm*600*400mm, which can be placed in devices of different sizes to be tested. However, the present design is not limited to this. In other embodiments, the spatial dimensions of the test chamber 18 can also be customized to meet different test requirements, which is not specifically limited.

[0121] Please refer to Figure 6 and Figure 7 , a testing method according to an embodiment of the present invention comprises:

[0122] Step 101, determining a test range of the device under test, wherein the test range includes multiple test frequency bands;

[0123] Step 103, powering on the test device 100 and the device under test in the test cavity 18 of the test device 100;

[0124] Step 105, selecting one test frequency band from a plurality of test frequency bands, and performing a test on the selected test frequency band;

[0125] Step 107, when the test of the current test frequency band is completed, another test frequency band is selected from the multiple test frequency bands and the test of the selected test frequency band is performed until the test of all the test frequency bands is completed;

[0126] The tests performed on the selected test band include:

[0127] Step 1051, setting the parameters of the radio frequency signal according to the selected test frequency band;

[0128] Step 1053, controlling the signal generator 160 of the test device 100 to output the RF signal according to the parameters of the RF signal, amplifying the RF signal using the signal amplifier 170 of the test device 100, and feeding the amplified RF signal into the test cavity 18 using the antenna 14 of the test device 100 to interfere with the device under test.

[0129] The signal generator 160 is selected from at least one of an ultra-wideband signal generator 161 and a multi-band signal generator 162. The signal amplifier 170 is selected from at least one of an ultra-wideband signal amplifier 171 and a multi-band signal amplifier 172. The antenna 14 is selected from at least one of an ultra-wideband antenna 141, a multi-band antenna 142 and a single-band antenna 143. When the antenna 14 is the single-band antenna 143, the test device 100 includes a plurality of the single-band antennas 143, each of which corresponds to a test frequency band.

[0130] In the above test method, through the combination of signal generator 160, signal amplifier 170 and antenna 14, multi-band radio frequency signals (electromagnetic wave signals) are fed into the test cavity 18, which can more realistically simulate the electromagnetic radiation environment of the device under test and meet the testing requirements of more frequency bands.

[0131] Specifically, during the test, the user can open the door 26, put the device under test into the test cavity 18, insert the power plug of the device under test into the socket in the test cavity 18, and close the door 26. The user can set the test range and test frequency band through the input component of the control panel 22, and the control board 24 determines the test range according to the user's input, and the test range includes multiple test frequency bands. The control board 24 can control the test device 100 and the device under test to power on. For example, the control board 24 can control the power supply module 34 to work and supply power to the RF module 16, the cooling fan, the device under test, etc.

[0132] The controller of the RF module 16 can select one of the test frequency bands from multiple test frequency bands according to a preset order or a random order, and perform a test on the selected test frequency band. Specifically, the controller can set the parameters of the RF signal, such as frequency, power, phase, etc., according to the selected test frequency band, and control the signal generator 160 to output a corresponding RF signal according to the parameters of the RF signal, amplify the RF signal using the signal amplifier 170, and feed the amplified RF signal into the test cavity 18 using the antenna 14 to test the electromagnetic anti-interference capability of the device under test.

[0133] In the case where the test of the current test frequency band is completed, the controller may select another test frequency band from the plurality of test frequency bands and perform the test of the selected test frequency band until the tests of all the test frequency bands are completed.

[0134] Please refer to Figure 8 In certain embodiments, the testing method comprises:

[0135] Step 109: After the tests on all frequency bands are completed, a test report is output.

[0136] This makes it easier for users to view the test report.

[0137] Specifically, the test report may include information such as the test scope, all test frequency bands, parameters of the RF signal output during the test (including frequency, phase, power, etc.), and test time.

[0138] Furthermore, the test device 100 may include a camera, and the control board 24 is electrically connected to the camera. During the test, the control board 24 may collect images of the device under test through the camera, and analyze the images of the device under test to identify whether the device under test has abnormal phenomena (such as flickering screen, distorted screen, black screen, white screen, etc.) during the test. If an abnormal phenomenon occurs, the control board 24 records the parameters of the current RF signal and the corresponding type of abnormal phenomenon, and forms the parameters of the current RF signal and the corresponding type of abnormal phenomenon in the test report, so as to facilitate the user to improve the abnormal phenomenon of the device under test later.

[0139] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0140] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A testing device for testing the electromagnetic anti-interference capability of a device to be tested, characterized in that: The testing device comprises: A test cavity, wherein a test cavity is provided in the test cavity, and the test cavity is used to place the device to be tested; antenna, and; A radio frequency module, wherein the radio frequency module comprises a signal generator and a signal amplifier, wherein the signal amplifier is connected to the signal generator and the antenna, wherein the signal generator is used to output a radio frequency signal, wherein the signal amplifier is used to amplify the radio frequency signal, and wherein the antenna is used to feed the amplified radio frequency signal into the test cavity; Wherein, the signal generator is selected from at least one of an ultra-wideband signal generator and a multi-band signal generator; The signal amplifier is selected from at least one of an ultra-wideband signal amplifier and a multi-band signal amplifier; The antenna is selected from at least one of an ultra-wideband antenna, a multi-band antenna and a single-band antenna. When the antenna is a single-band antenna, the test device includes a plurality of the single-band antennas, each of which corresponds to a test frequency band.

2. The testing device according to claim 1, characterized in that: The ultra-wideband signal generator is used to generate a radio frequency signal located in a first broadband, the ultra-wideband signal amplifier is used to amplify a radio frequency signal located in a second broadband, and the ultra-wideband antenna is used to radiate a radio frequency signal located in a third broadband, and the second broadband and the third broadband at least include the first broadband.

3. The testing device according to claim 2, characterized in that: The first broadband is 20 MHz to 40 GHz.

4. The testing device according to claim 1, characterized in that: The signal generator is the ultra-wideband signal generator, the signal amplifier is the ultra-wideband signal amplifier, the antenna is the multi-band antenna, or; The signal generator is the ultra-wideband signal generator, the signal amplifier is the ultra-wideband signal amplifier, and the antenna is the single-band antenna, or; The signal generator is the ultra-wideband signal generator, the signal amplifier is the multi-band signal amplifier, and the antenna is the ultra-wideband antenna, or; The signal generator is the ultra-wideband signal generator, the signal amplifier is the multi-band signal amplifier, and the antenna is the multi-band antenna, or; The signal generator is the ultra-wideband signal generator, the signal amplifier is the multi-band signal amplifier, and the antenna is the single-band antenna, or; The signal generator is the ultra-wideband signal generator, the signal amplifier is the ultra-wideband signal amplifier, and the antenna is the ultra-wideband antenna.

5. The testing device according to claim 1, characterized in that: The signal generator is the multi-band signal generator, the signal amplifier is the ultra-wideband signal amplifier, and the antenna is the multi-band antenna, or; The signal generator is the multi-band signal generator, the signal amplifier is the ultra-wideband signal amplifier, and the antenna is the single-band antenna, or; The signal generator is the multi-band signal generator, the signal amplifier is the ultra-wideband signal amplifier, and the antenna is the ultra-wideband antenna, or; The signal generator is the multi-band signal generator, the signal amplifier is the multi-band signal amplifier, and the antenna is the ultra-wideband antenna, or; The signal generator is the multi-band signal generator, the signal amplifier is the multi-band signal amplifier, and the antenna is the multi-band antenna.

6. The testing device according to claim 1, characterized in that: The testing device comprises an electrical room and a heat dissipation assembly, wherein the electrical room is located outside the testing cavity, the heat dissipation assembly and the radio frequency module are located in the electrical room, and the heat dissipation assembly is used for dissipating heat for the radio frequency module.

7. The testing device according to claim 6, characterized in that: The heat dissipation component includes an air guide and a heat dissipation motor. The air guide covers the radio frequency module. The air guide is provided with an air inlet and an air outlet. The air inlet is arranged corresponding to the heat dissipation motor.

8. The testing device according to claim 7, characterized in that: The testing device further comprises a power supply module, wherein the power supply module is arranged above the air guide member, and the power supply module and the air guide member are thermally connected.

9. A testing method, characterized in that: include: Determine a test range of the device under test, wherein the test range includes multiple test frequency bands; Powering on the test device and the device to be tested located in the test cavity of the test device; Selecting one of the test frequency bands from the multiple test frequency bands, and performing a test on the selected test frequency band; When the test of the current test frequency band is completed, selecting another test frequency band from the multiple test frequency bands and performing the test of the selected test frequency band until the test of all test frequency bands is completed; Executing the test of the selected test frequency band includes: setting the parameters of the radio frequency signal according to the selected test frequency band, controlling the signal generator of the test device to output the radio frequency signal according to the parameters of the radio frequency signal, amplifying the radio frequency signal by using the signal amplifier of the test device, and feeding the amplified radio frequency signal into the test cavity by using the antenna of the test device to interfere with the device under test; Wherein, the signal generator is selected from at least one of an ultra-wideband signal generator and a multi-band signal generator; The signal amplifier is selected from at least one of an ultra-wideband signal amplifier and a multi-band signal amplifier; The antenna is selected from at least one of an ultra-wideband antenna, a multi-band antenna and a single-band antenna. When the antenna is the single-band antenna, the test device includes a plurality of the single-band antennas, each of which corresponds to one test frequency band.

10. The testing method according to claim 9, characterized in that: The test method includes: When all test frequency bands are tested, a test report is output.

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