Electromagnetic interference test set

Abstract

The utility model discloses an electromagnetic interference testing device. The electromagnetic interference testing device comprises a multifunctional test bin, a control circuit, an electrostatic / magnetic field testing module, a radio interference testing module and multiple sample test sites. The multifunctional test bin comprises an electrical bin and a test bin, and the electrical bin and the test bin are adjacent. The electrostatic / magnetic field testing module, the radio interference testing module and the multiple sample test sites are all arranged in the test bin, the control circuit is arranged in the electrical bin, the sample test sites are used for placing samples to be tested, and the electrostatic / magnetic field testing module, the radio interference testing module and the sample test sites are all connected with the control circuit. Thus, the electromagnetic interference testing device can realize multifunctional testing of the samples to be tested in a limited space without manual intervention, thereby ensuring the consistency of the testing steps, improving the probability of testing problem reproduction and the testing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of power electronics technology, and in particular to an electromagnetic interference testing device. Background Technology

[0002] Product reliability testing allows engineers to gain a more intuitive and in-depth understanding of a product's quality and weaknesses. Currently, most existing reliability testing equipment targets single test points, leading to pre-test actions unrelated to the actual test steps (such as product transfer) when testing different points. This results in numerous problems, including multiple testing devices for a single product, high maintenance workload for these devices, large testing space requirements, and the need for personnel involvement in the reliability testing process. Furthermore, personnel involvement can impact test results. For example, non-standard testing methods, tester fatigue, and differences in testing habits and methods among different testers can make it difficult to reproduce and locate test problems during reliability testing, thus reducing testing efficiency. Utility Model Content

[0003] This utility model provides an electromagnetic interference testing device that integrates multiple testing functions. It can avoid the transfer of test samples and human intervention during product performance testing, enabling multi-functional testing of test samples within a limited space and without human intervention. This ensures the consistency of testing steps, increases the probability of reproducing test problems and testing efficiency, and reduces the maintenance workload of the electromagnetic interference testing device.

[0004] This utility model provides an electromagnetic interference testing device, which includes a multi-functional test chamber, a control circuit, an electrostatic / magnetic field testing module, a radio interference testing module, and multiple sample testing positions.

[0005] The multifunctional test chamber includes an electrical chamber and a test chamber, which are adjacent to each other.

[0006] The electrostatic / magnetic field testing module, the radio interference testing module, and the multiple sample testing positions are all located in the testing chamber. The control circuit is located in the electrical chamber. The sample testing positions are used to place the samples to be tested. The electrostatic / magnetic field testing module, the radio interference testing module, and the sample testing positions are all connected to the control circuit.

[0007] The control circuit is used to control the electrostatic / magnetic field testing module, the radio interference testing module, and the sample to be tested, and to perform multifunctional testing on the sample to be tested.

[0008] Optionally, the electrostatic / magnetic field testing module includes a test moving unit and an electrostatic / magnetic field testing unit;

[0009] The electrostatic / magnetic field testing unit is mounted on the testing moving unit, and both the testing moving unit and the electrostatic / magnetic field testing unit are connected to the control circuit.

[0010] The control circuit is used to control the test moving unit to move the electrostatic / magnetic field test unit within the test chamber, so as to control the electrostatic / magnetic field test unit to perform electrostatic testing or constant magnetic field testing on the sample to be tested at different positions in the test chamber.

[0011] Optionally, the test moving unit includes a first guide rail, a second guide rail, a horizontal movement control motor, and a vertical movement control motor;

[0012] The first guide rail is horizontally fixed to the top of the test chamber, the first end of the second guide rail is disposed on the track of the first guide rail, the horizontal movement control motor is disposed on the top of the test chamber or embedded in the first guide rail, the horizontal movement control motor is mechanically connected to the first end of the second guide rail, and the horizontal movement control motor is used to control the second guide rail to move on the first guide rail;

[0013] The vertical movement control motor is embedded in the second guide rail, the electrostatic / magnetic field testing unit is set on the track of the second guide rail, the vertical movement control motor is mechanically connected to the electrostatic / magnetic field testing unit, and the vertical movement control motor is used to control the electrostatic / magnetic field testing unit to move on the second guide rail;

[0014] Both the horizontal movement control motor and the vertical movement control motor are connected to the control circuit.

[0015] Optionally, the electrostatic / magnetic field testing unit includes an electrostatic / magnetic field generator and an interference source fixator;

[0016] The interference source fixer is mounted on the track of the second guide rail, and the vertical movement control motor is mechanically connected to the interference source fixer. The vertical movement control motor is used to control the movement of the interference source fixer on the second guide rail.

[0017] The interference source fixer is used to fix the electrostatic / magnetic field generator, which is connected to the control circuit.

[0018] Optionally, the electrostatic / magnetic field generator includes an electrostatic generator and a neodymium magnet;

[0019] The electrostatic generator is mounted on the interference source fixator, and the electrostatic generator is connected to the control circuit; or...

[0020] The neodymium magnet is mounted on the interference source fixation device.

[0021] Optionally, the radio interference test module includes multiple antennas and multiple antenna interfaces;

[0022] The antenna is mounted on the antenna interface, and the antenna interface is connected to the control circuit.

[0023] Optionally, the back panel of the test chamber is provided with a wiring channel, and the wiring channel is provided with multiple sample test positions;

[0024] The control circuit is connected to the sample test position through the function lines set in the wiring groove.

[0025] Optionally, the electromagnetic interference testing device also includes an observation module;

[0026] The observation module includes an observation window and an observation light;

[0027] The observation window is located on the door of the test chamber, and the observation light is located on the inside of the door facing the chamber and above the observation window; the observation light is connected to the control circuit.

[0028] Optionally, the control circuit includes a test control module;

[0029] The test control module includes a display and operation control unit and a power-on / off test control unit;

[0030] The power-on / off test control unit is connected to the display and operation control unit, and the power-on / off test control unit is connected to each of the sample test positions.

[0031] Optionally, the test control module further includes a radio interference test control unit and a motor control unit;

[0032] The radio interference test control unit, the motor control unit, and the electrostatic / magnetic field test module are all connected to the display and operation control unit. The radio interference test control unit is connected to the radio interference test module, and the motor control unit is connected to the electrostatic / magnetic field test module.

[0033] Optionally, the control circuit includes a power supply module;

[0034] The power module includes a contactor, a sample power unit, and a device power unit;

[0035] The sample power supply unit and the device power supply unit are both connected to the contactor. The power-on / off test control unit is connected to the sample power supply unit. The display and operation control unit, the radio interference test control unit, the electrostatic / magnetic field test module, and the motor control unit are all connected to the device power supply unit.

[0036] Optionally, the electromagnetic interference testing device further includes a display and indication module; the display and indication module is disposed on the outer shell of the electrical compartment;

[0037] The display indicator module includes a power communication interface and a display panel;

[0038] The contactor is connected to the power communication interface, and the display panel is connected to the display and operation control unit.

[0039] This invention integrates an electrostatic / magnetic field testing module, a radio interference testing module, and multiple sample testing positions within the testing chamber of an electromagnetic interference testing device. A control circuit is installed in the electrical chamber, enabling the electromagnetic interference testing device to automatically perform multi-functional tests (electrostatic testing, radio interference testing, constant magnetic field testing, and power-on / off testing) on ​​the samples within a limited space without human intervention. This avoids the transfer of samples and human intervention during product performance testing, ensuring consistency in testing procedures, increasing the probability of reproducing testing problems and improving testing efficiency, while reducing the maintenance workload of the electromagnetic interference testing device. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 A schematic diagram of the structure of an electromagnetic interference testing device provided in an embodiment of this utility model;

[0042] Figure 2 A schematic diagram of the operating trajectory of an electrostatic generator or neodymium magnet provided for an embodiment of this utility model;

[0043] Figure 3 A circuit structure diagram of an electromagnetic interference testing device provided in an embodiment of this utility model;

[0044] Figure 4 A test flowchart is provided for an embodiment of this utility model. Detailed Implementation

[0045] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0046] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0047] This utility model provides an electromagnetic interference testing device. Figure 1 This is a schematic diagram of an electromagnetic interference testing device provided in an embodiment of the present invention. Figure 1 As shown, the electromagnetic interference testing device includes a multifunctional test chamber 10, a control circuit, an electrostatic / magnetic field testing module 124, a radio interference testing module 125, and multiple sample testing positions 123; the multifunctional test chamber 10 includes an electrical chamber 11 and a test chamber 12, which are adjacent to each other.

[0048] The electrostatic / magnetic field test module 124, the radio interference test module 125, and multiple sample test positions 123 are all located in the test chamber 12, the control circuit is located in the electrical chamber 11, and the sample test positions 123 are used to place the samples to be tested. The electrostatic / magnetic field test module 124, the radio interference test module 125, and the sample test positions 123 are all connected to the control circuit.

[0049] The control circuit is used to control the electrostatic / magnetic field test module 124, the radio interference test module 125, and the sample to be tested, and to perform multi-functional tests on the sample to be tested.

[0050] The multi-functional test chamber 10 can perform electrostatic discharge (ESD) testing, radio interference (RI) testing, constant magnetic field (CMF) testing, and power-on / off testing on the sample. The test chamber 12 of the multi-functional test chamber 10 is a space for comprehensive product testing, and is made of non-ferromagnetic steel plate. The electrical chamber 11 of the multi-functional test chamber 10 is used to house the control circuit, providing sealed protection against corrosion from external dust and moisture. The control circuit is a control system for performing ESD testing, RMF testing, CMF testing, and power-on / off testing on the product. The ESD / CMF testing module 124 performs ESD and CMF testing on the sample, controls the RMF testing module 125 to perform RMF testing, and uses the sample test position 123 to perform power-on / off testing and collect data or signals from the sample during testing.

[0051] This embodiment of the invention integrates an electrostatic / magnetic field testing module 124, a radio interference testing module 125, and multiple sample testing positions 123 within the test chamber 12 of the electromagnetic interference testing device. A control circuit is set in the electrical chamber 11, enabling the electromagnetic interference testing device to automatically perform multifunctional tests (electrostatic testing, radio interference testing, constant magnetic field testing, and power-on / off testing) on ​​the test samples in a limited space without human intervention. This avoids the transfer of test samples and human intervention during product performance testing, thereby ensuring the consistency of testing steps, increasing the probability of reproducing test problems and testing efficiency, and reducing the maintenance workload of the electromagnetic interference testing device.

[0052] Based on the above embodiments, alternatively, refer to... Figure 1 The electrostatic / magnetic field test module 124 includes a test moving unit and an electrostatic / magnetic field test unit; the electrostatic / magnetic field test unit is disposed on the test moving unit, and both the test moving unit and the electrostatic / magnetic field test unit are connected to the control circuit.

[0053] The control circuit is used to control the test moving unit to move the electrostatic / magnetic field test unit within the test chamber 12, so as to control the electrostatic / magnetic field test unit to perform electrostatic testing or constant magnetic field testing on the sample to be tested at different positions in the test chamber 12.

[0054] Specifically, the test moving unit includes a first guide rail 1241, a second guide rail 1242, a horizontal movement control motor, and a vertical movement control motor;

[0055] The first guide rail 1241 is horizontally fixed to the top of the test chamber 12. The first end of the second guide rail 1242 is set on the track of the first guide rail 1241. The horizontal movement control motor is set on the top of the test chamber 12 or embedded in the first guide rail 1241. The horizontal movement control motor is mechanically connected to the first end of the second guide rail 1242 and is used to control the movement of the second guide rail 1242 on the first guide rail 1241. The vertical movement control motor is embedded in the second guide rail 1242. The electrostatic / magnetic field testing unit is set on the track of the second guide rail 1242. The vertical movement control motor is mechanically connected to the electrostatic / magnetic field testing unit and is used to control the movement of the electrostatic / magnetic field testing unit on the second guide rail 1242. Both the horizontal and vertical movement control motors are connected to the control circuit.

[0056] The electrostatic / magnetic field testing unit includes an electrostatic / magnetic field generator and an interference source fixation device 1243;

[0057] The interference source fixation device 1243 is mounted on the track of the second guide rail 1242. The vertical movement control motor is mechanically connected to the interference source fixation device 1243. The vertical movement control motor is used to control the movement of the interference source fixation device 1243 on the second guide rail 1242. The interference source fixation device 1243 is used to fix the electrostatic / magnetic field generator, which is connected to the control circuit.

[0058] The electrostatic / magnetic field generator includes an electrostatic generator and a neodymium magnet;

[0059] An electrostatic generator is mounted on the interference source fixation device 1243 and is connected to the control circuit; alternatively, a neodymium magnet is mounted on the interference source fixation device 1243.

[0060] Wherein, the first guide rail 1241 and the second guide rail 1242 are perpendicular, the interference source fixator 1243 is used to fix the electrostatic generator or neodymium magnet, the horizontal movement control motor is used to control the second guide rail 1242 to move horizontally on the first guide rail 1241, and the vertical movement control motor 1245 is used to control the interference source fixator 1243 to move vertically on the second guide rail 1242. For example, Figure 2 This is a schematic diagram of the operating trajectory of an electrostatic generator or neodymium magnet provided for an embodiment of this utility model. Figure 2 The dashed line represents the movement trajectory of the electrostatic generator or neodymium magnet under the control of the horizontal movement control motor 1244 and the vertical movement control motor 1245.

[0061] When the tester fixes the electrostatic generator on the interference source holder 1243, the horizontal movement control motor 1244 and the vertical movement control motor 1245 can control the electrostatic generator to move within the test chamber 12 to perform electrostatic testing on the sample to be tested; when the tester fixes the neodymium magnet on the interference source holder 1243, the horizontal movement control motor 1244 and the vertical movement control motor 1245 can control the neodymium magnet to move within the test chamber 12 to perform constant magnetic field testing on the sample to be tested.

[0062] Based on the above embodiments, alternatively, refer to... Figure 1 The radio interference test module 125 includes multiple antennas 1251 and multiple antenna interfaces 1252; the antennas 1251 are mounted on the antenna interfaces 1252, and the antenna interfaces 1252 are connected to the control circuit.

[0063] The antenna interface 1252 is located at the bottom of the test chamber 12. Figure 1 The bottom of the test chamber 12 has three antenna interfaces 1252. Antennas 1251 include line antennas, surface antennas, and array antennas, etc. Different types of antennas 1251 can be replaced and installed via the antenna interfaces 1252 according to testing requirements to perform different types of radio interference tests on the sample under test. The control module is connected to each antenna 1251 through each antenna interface 1252 to control the frequency of the interference signal output by each antenna 1251 and to activate the antenna combination that outputs the interference signal.

[0064] Additionally, it should be noted that the antenna 1251 used in this solution is a wireless antenna 1251.

[0065] Based on the above embodiments, alternatively, refer to... Figure 1 The back panel 121 of the test chamber 12 is provided with a wiring channel 122, and multiple sample test positions 123 are provided on the wiring channel 122; the control circuit is connected to the sample test positions 123 through the function lines provided in the wiring channel 122.

[0066] The back panel 121 of the test chamber 12 has a wiring groove 122 with multiple functional lines (e.g., power supply lines, communication lines, signal transmission lines, and data transmission lines) for connecting the sample test position 123 and the control circuit. This allows the detection signal generated by the control circuit to be transmitted to the sample to be tested placed in the sample test position 123 for testing (e.g., power-on / off testing of the sample to be tested), or the data or signals fed back by the sample to be tested during testing can be collected through the functional lines.

[0067] Based on the above embodiments, alternatively, refer to... Figure 1The electromagnetic interference testing device also includes an observation module 127; the observation module 127 includes an observation window 1271 and an observation lamp 1272; the observation window 1271 is located on the door 126 of the test chamber 12, and the observation lamp 1272 is located on the inside of the door 126 facing the chamber and above the observation window 1271; the observation lamp 1272 is connected to the control circuit.

[0068] During the testing of the sample, the door 126 of the test chamber 12 is closed, and the tester can observe the testing progress and process through the observation window 1271 on the door 126. Additionally, the observation lamp 1272 serves as the internal light source for the test chamber 12. When the internal light in the test chamber 12 is insufficient, the control circuit can activate the observation lamp 1272 to provide light to the test chamber 12, thereby increasing the internal brightness and allowing the tester to clearly observe the testing progress and process.

[0069] Based on the above embodiments, optionally, Figure 3 This is a schematic diagram of the circuit structure of an electromagnetic interference testing device provided in an embodiment of this utility model. Figure 3 As shown, the control circuit includes a test control module;

[0070] The test control module includes a display and operation control unit 322, a power-on / off test control unit 321, a radio interference test control unit 323, and a motor control unit 324;

[0071] The power-on / off test control unit 321 is connected to each sample test position 123; the power-on / off test control unit 321, the radio interference test control unit 323, the motor control unit 324, and the electrostatic / magnetic field test module 124 are all connected to the display and operation control unit 322, the radio interference test control unit 323 is connected to the radio interference test module 125, and the motor control unit 324 is connected to the electrostatic / magnetic field test module 124.

[0072] The electrostatic / magnetic field test module 124 includes an electrostatic generator 1246 connected to a display and operation control unit 322, a horizontal movement control motor 1244 and a vertical movement control motor 1245 connected to a motor control unit 324, and a radio interference test control unit 323 connected to an antenna interface 1252.

[0073] The electrostatic generator 1246 is a high-voltage electrostatic generation device fixed to the interference source holder 1243. The electrostatic generator 1246 can reach different positions in the test chamber 12 to release static electricity through a combination of horizontal movement control motor 1244 and vertical movement control motor 1245. During the test, the discharge head of the electrostatic generator 1246 and the back plate 121 of the test chamber 12 will generate a potential difference sufficient to release static electricity.

[0074] The radio interference test control unit 323 includes a wireless generator connected to an antenna interface 1252. The wireless generator can generate electromagnetic waves of a specific frequency and transmit them to the antennas 1251, and control the activation of a combination of antennas 1251 (e.g., activating the first and second antennas 1251).

[0075] The power-on / off test control unit 321 consists of an isolation adjustable transformer and a current booster device. The power-on / off test control unit 321 controls the output voltage of the adjustable transformer and the output current of the current booster device by displaying and operating the control unit 322 to select the corresponding test parameters, thereby performing power-on / off tests on the sample to be tested.

[0076] The motor control unit 324 can control the motors included in the horizontal movement controller 1244 and the vertical movement controller 1245 to control the interference source fixation unit 1243 to drive the electrostatic generator 1246 or the neodymium magnet to move in the test chamber 12.

[0077] The display and operation control unit 322 is a test operation system configured with the display panel 22 or a host computer. It supports functions such as test parameter configuration, test status display, test item selection, external communication control, power-on self-test, and alarm prompts. Test personnel can control the display and operation control unit 322 to configure test parameters, select test items, and control external communication through the display panel 22 or the host computer. Before the test, the self-test results of the electromagnetic interference test device can be monitored through the display panel 22 or the host computer. During the test, the test is monitored through alarm prompts and test status displays.

[0078] 1) During electrostatic discharge (ESD) testing, the tester fixes the ESD generator to the interference source holder 1243, then selects ESD testing from the test items on the display panel 22 to enter the ESD test parameter configuration interface. This interface allows setting the discharge cycle, discharge point trajectory, movement speed, discharge voltage, sample supply voltage, test sample supply current, the position of the test sample, and the test cycle. After setting, wait for the tester to confirm that the test environment is set up, and then confirm the start of the test via the display panel 22 or the host computer.

[0079] During the electrostatic discharge (ESD) test, the horizontal movement control motor 1244 and the vertical movement control motor 1245 work together to cause the ESD generator 1246 to discharge onto the backplate 121 along a pre-set discharge point trajectory. Simultaneously, the tester communicates with the sample under test via a communication line or wireless communication method to obtain test data.

[0080] 2) During radio interference testing, the tester installs the radio interference antenna 1251 onto the corresponding antenna interface 1252. The tester selects "Radio Interference Test" through the test item selection on the display panel 22 or the host computer to enter the parameter configuration interface for the radio interference test. This allows setting the radio transmission period, radio transmission frequency, radio transmission strength, supply voltage to the test sample, supply current to the test sample, and test cycle period for the three antenna interfaces 1252 connected to the antenna 1251. After setting, the tester waits for confirmation that the test environment is deployed and then confirms the start of the test through the display panel 22 or the host computer. Simultaneously, the tester communicates with the test sample via a communication cable or wireless communication method to obtain test data.

[0081] 3) During the constant magnetic field interference test, the tester fixes the neodymium magnet to the interference source holder 1243, and then selects the constant magnetic field interference test through the test items on the display panel 22 or the host computer to enter the parameter configuration interface for the constant magnetic field interference test. This interface allows setting the neodymium magnet movement trajectory, movement speed, power supply voltage of the sample under test, power supply current of the sample under test, position of the sample under test, and test cycle. After setting, wait for the tester to confirm that the test environment deployment is complete, and then confirm the start of the test through the display panel 22 or the host computer.

[0082] During the constant magnetic field interference test, the horizontal movement control motor 1244 and the vertical movement control motor 1245 work together to move the neodymium magnet along a pre-set discharge point trajectory. Simultaneously, the tester communicates with the sample under test via a communication line or wireless communication to obtain test data.

[0083] 4) During power-on / off testing, the tester installs the sample to be tested in the corresponding test position 123. Then, through the test item selection on the display panel 22 or the host computer, the power-on / off test is selected to enter the parameter configuration interface. This interface allows setting the upper and lower voltage limits, voltage rise time, voltage fall time, current magnitude, voltage waveform, voltage frequency, and test cycle period. After setting, wait for the tester to confirm that the test environment deployment is complete, and then confirm the start of the test through the display panel 22 or the host computer. At the same time, the tester will communicate with the sample to be tested via communication cable or wireless communication to obtain test data.

[0084] Based on the above embodiments, alternatively, refer to... Figure 3The control circuit includes a power supply module; the power supply module includes a contactor 311, a sample power supply unit 312, and a device power supply unit 313.

[0085] The sample power supply unit 312 and the device power supply unit 313 are both connected to the contactor 311. The power-on / off test control unit 321 is connected to the sample power supply unit 312. The display and operation control unit 322, the radio interference test control unit 323, the electrostatic / magnetic field test module 124 and the motor control unit 324 are all connected to the device power supply unit 313.

[0086] The electrostatic / magnetic field testing module 124 includes an electrostatic generator 1246 connected to the device power supply unit 313. The sample power supply unit 312 can provide suitable voltage power to the power-on / off test control unit 321, and can also provide suitable voltage power to the display and operation control unit 322, the electrostatic generator 1246, the radio interference test control unit 323, and the motor control unit 324.

[0087] Based on the above embodiments, alternatively, refer to... Figure 2 and Figure 3 The electromagnetic interference testing device also includes a display and indication module 20; the display and indication module 20 is disposed on the outer shell of the electrical compartment 11; the display and indication module 20 includes a power communication interface 21 and an emergency stop button 25; the contactor 311 is connected to the power communication interface 21, and the emergency stop button 25 is connected to the contactor 311.

[0088] The power communication interface 21 is a multi-functional interface. It can connect to an external power source to obtain power, and it can also communicate with external devices. During the test, it can communicate with the sample under test while simultaneously obtaining power from the external device. The emergency stop button 25 can control the on / off state of the contactor 311, so that the contactor 311 controls the connection state between the power communication interface 21 and the sample power unit 312 and the device power unit 313. This allows the external power source or external power supply equipment to supply power to the sample power unit 312 and the device power unit 313 through the power communication interface 21. Thus, in an emergency, the power supply to the electromagnetic interference testing device can be cut off by the emergency stop button 25, causing the electromagnetic interference testing device to stop operating quickly. After the emergency is resolved, the electromagnetic interference testing device can be restored to normal operation by pressing the emergency stop button 25 again.

[0089] Based on the above embodiments, alternatively, refer to... Figure 2 and Figure 3The display and indication module 20 also includes a running status indicator light 23, a main switch 24, and a display panel 22. The display panel 22 is connected to the display and operation control unit 322. The running status indicator light 23 and the observation light 1272 are both connected to the display panel 22. The running status indicator light 23 and the observation light 1272 are both connected to the contactor 311. The contactor 311 is connected to the main switch 24, and the main switch 24 is connected to the power communication interface 21.

[0090] The main switch 24 controls the power supply to the entire electromagnetic interference testing device. The operating status indicator 23 and the observation lamp 1272 of the observation module 127 are both connected to contactor 311, allowing external power to supply power to the operating status indicator 23 and observation lamp 1272 via contactor 311. The display panel 22 can analyze the test operation status based on test feedback data to control the operating status indicator 23 to indicate the operating status of the electromagnetic interference testing device. The observation lamp 1272 is connected to the display panel 22, allowing test personnel to control its illumination state via the display panel 22.

[0091] Based on the above embodiments, optionally, Figure 4 A test flowchart is provided for an embodiment of this utility model, such as Figure 4 As shown, the testing device is powered on by closing the main switch 24. After being powered on, the testing device enters a power-on self-test. If there is an abnormality in the testing device, the display panel 22 and the running status indicator 23 will display an alarm. If the self-test of the testing device is normal, it will proceed to the test item selection and test parameter configuration. After the test parameters are configured, the test will begin. During the test, the test process can be monitored in real time through the display panel 22. After the test is completed, the display panel 22 will display the test completion information and test results.

[0092] In addition, after the display panel 22 and the running status indicator 23 indicate an alarm, the system will continuously check whether the alarm problem has been resolved until the alarm problem is resolved and then proceed to the test item selection and test parameter configuration.

[0093] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0094] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An electromagnetic interference testing device, characterized in that, It includes a multi-functional test chamber, control circuit, electrostatic / magnetic field test module, radio interference test module, and multiple sample test positions; The multifunctional test chamber includes an electrical chamber and a test chamber, which are adjacent to each other. The electrostatic / magnetic field testing module, the radio interference testing module, and the multiple sample testing positions are all located in the testing chamber. The control circuit is located in the electrical chamber. The sample testing positions are used to place the samples to be tested. The electrostatic / magnetic field testing module, the radio interference testing module, and the sample testing positions are all connected to the control circuit. The control circuit is used to control the electrostatic / magnetic field testing module, the radio interference testing module, and the sample to be tested, and to perform multifunctional testing on the sample to be tested.

2. The electromagnetic interference testing device according to claim 1, characterized in that, The electrostatic / magnetic field testing module includes a test movement unit and an electrostatic / magnetic field testing unit; The electrostatic / magnetic field testing unit is mounted on the testing moving unit, and both the testing moving unit and the electrostatic / magnetic field testing unit are connected to the control circuit. The control circuit is used to control the test moving unit to move the electrostatic / magnetic field test unit within the test chamber, so as to control the electrostatic / magnetic field test unit to perform electrostatic testing or constant magnetic field testing on the sample to be tested at different positions in the test chamber.

3. The electromagnetic interference testing device according to claim 2, characterized in that, The test moving unit includes a first guide rail, a second guide rail, a horizontal movement control motor, and a vertical movement control motor; The first guide rail is horizontally fixed to the top of the test chamber, the first end of the second guide rail is disposed on the track of the first guide rail, the horizontal movement control motor is disposed on the top of the test chamber or embedded in the first guide rail, the horizontal movement control motor is mechanically connected to the first end of the second guide rail, and the horizontal movement control motor is used to control the second guide rail to move on the first guide rail; The vertical movement control motor is embedded in the second guide rail, the electrostatic / magnetic field testing unit is set on the track of the second guide rail, the vertical movement control motor is mechanically connected to the electrostatic / magnetic field testing unit, and the vertical movement control motor is used to control the electrostatic / magnetic field testing unit to move on the second guide rail; Both the horizontal movement control motor and the vertical movement control motor are connected to the control circuit.

4. The electromagnetic interference testing device according to claim 3, characterized in that, The electrostatic / magnetic field testing unit includes an electrostatic / magnetic field generator and an interference source fixator; The interference source fixer is mounted on the track of the second guide rail, and the vertical movement control motor is mechanically connected to the interference source fixer. The vertical movement control motor is used to control the movement of the interference source fixer on the second guide rail. The interference source fixer is used to fix the electrostatic / magnetic field generator, which is connected to the control circuit.

5. The electromagnetic interference testing device according to claim 4, characterized in that, The electrostatic / magnetic field generator includes an electrostatic generator and a neodymium magnet; The electrostatic generator is mounted on the interference source fixator, and the electrostatic generator is connected to the control circuit; or... The neodymium magnet is mounted on the interference source fixation device.

6. The electromagnetic interference testing device according to claim 1, characterized in that, The radio interference test module includes multiple antennas and multiple antenna interfaces; The antenna is mounted on the antenna interface, and the antenna interface is connected to the control circuit.

7. The electromagnetic interference testing device according to claim 1, characterized in that, The back panel of the test chamber is provided with a wiring channel, and multiple sample test positions are provided on the wiring channel; The control circuit is connected to the sample test position through the function lines set in the wiring groove.

8. The electromagnetic interference testing device according to claim 1, characterized in that, It also includes an observation module; The observation module includes an observation window and an observation light; The observation window is located on the door of the test chamber, and the observation light is located on the inside of the door facing the chamber and above the observation window; the observation light is connected to the control circuit.

9. The electromagnetic interference testing device according to claim 1, characterized in that, The control circuit includes a test control module; The test control module includes a display and operation control unit and a power-on / off test control unit; The power-on / off test control unit is connected to the display and operation control unit, and the power-on / off test control unit is connected to each of the sample test positions.

10. The electromagnetic interference testing device according to claim 9, characterized in that, The test control module also includes a radio interference test control unit and a motor control unit; The radio interference test control unit, the motor control unit, and the electrostatic / magnetic field test module are all connected to the display and operation control unit. The radio interference test control unit is connected to the radio interference test module, and the motor control unit is connected to the electrostatic / magnetic field test module.

11. The electromagnetic interference testing device according to claim 10, characterized in that, The control circuit includes a power supply module; The power module includes a contactor, a sample power unit, and a device power unit; The sample power supply unit and the device power supply unit are both connected to the contactor. The power-on / off test control unit is connected to the sample power supply unit. The display and operation control unit, the radio interference test control unit, the electrostatic / magnetic field test module, and the motor control unit are all connected to the device power supply unit.

12. The electromagnetic interference testing device according to claim 11, characterized in that, It also includes a display indicator module; the display indicator module is disposed on the outer shell of the electrical compartment; The display indicator module includes a power communication interface and a display panel; The contactor is connected to the power communication interface, and the display panel is connected to the display and operation control unit.

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