Device immunity automatic testing device and method

Abstract

The invention discloses an equipment immunity automatic test device and method, and relates to the EMC test field, and the device comprises a mobile module, an antenna, a first support part, a grounding part and a second power supply module which are arranged in a shielding box body, and a control module and a radio frequency signal generation module which are arranged outside the shielding box body; the first power supply module is used for supplying power to the to-be-tested equipment so as to ensure that the to-be-tested equipment is tested under the condition of normal work; and the control module is used for controlling the movement module to act according to a preset test strategy to drive the antenna to move so as to adjust the position and / or angle of the antenna relative to the to-be-tested equipment, and controlling the radio frequency signal generation module to output a corresponding target radio frequency signal according to a current test requirement so as to enable the target radio frequency signal to be transmitted through the antenna. Therefore, according to the scheme, the antenna does not need to be manually adjusted, the applicability is wide, the automation degree is high, operation is easy, test conditions can be ensured to be consistent during multiple tests, and repeatability is high.

Description

Technical Field

[0001] The present invention relates to the technical field of EMC testing, and in particular to an automatic testing device and method for equipment immunity. Background Art

[0002] EMC (Electro Magnetic Compatibility) refers to the ability of a device to operate in accordance with requirements in an electromagnetic environment without causing intolerable electromagnetic interference to any other device in the environment. Specifically, device samples need to undergo EMC testing. One important test is the immunity test, which is used to measure the device sample's resistance to electromagnetic interference from its environment. That is, the immunity test is used to simulate different signal environments by using various antennas to evaluate the performance and anti-interference ability of the device sample.

[0003] Currently, immunity testing of device samples mainly uses a manually supported antenna. This involves manually adjusting the antenna position to meet different test requirements. However, this method has certain shortcomings. On the one hand, manual adjustment of the antenna is time-consuming, error-prone, and complex to operate. There is also a risk of radiation exposure during adjustment. On the other hand, manual operation makes it difficult to ensure consistent test conditions for each test, resulting in poor repeatability.

[0004] Therefore, how to provide a more effective solution to implement the immunity test of equipment is an urgent problem to be solved. Summary of the Invention

[0005] In view of this, the present invention provides an automatic testing device and method for equipment immunity, which has wide applicability and high degree of automation, is easy to operate, can ensure consistent test conditions during multiple tests, has strong repeatability, and is conducive to practical application.

[0006] To solve the above technical problems, the present application provides an automatic test device for device immunity, comprising a mobile module, an antenna, a first supporting component, a grounding component and a first power supply module arranged in a shielding box, and a control module and a radio frequency signal generating module arranged outside the shielding box;

[0007] The control module is connected to the radio frequency signal generating module and the mobile module respectively, and the antenna is connected to the radio frequency signal generating module and the mobile module respectively; the grounding component is arranged on the first supporting component, the first power supply module and the device to be tested are both arranged on the grounding component, and the grounding ends of the first power supply module and the device to be tested are connected to the grounding component, and the output end of the first power supply module is connected to the power input end of the device to be tested;

[0008] The first power supply module is used to supply power to the device under test;

[0009] The control module is used to control the movement of the mobile module to drive the antenna to move according to a preset test strategy, thereby adjusting the position and / or angle of the antenna relative to the device to be tested, and controlling the RF signal generation module to output the corresponding target RF signal according to the current test requirements, so that the target RF signal is transmitted through the antenna.

[0010] Furthermore, the grounding component includes a grounding plate and N grounding plates, where N is an integer greater than 1;

[0011] The grounding plate is arranged on the supporting surface of the first supporting component, the first power supply module and the device to be tested are both arranged on the grounding plate, and the grounding ends of the first power supply module and the device to be tested are connected to the grounding plate;

[0012] One end of each grounding plate is connected to the grounding plate, and the other end is connected to the shell of the shielding box, so that the grounding plate, the shell and the grounding plate are connected to a common ground.

[0013] Furthermore, it also includes a second supporting member;

[0014] The second supporting component is arranged on the ground plate, and the device to be tested is arranged on the second supporting component, and the connection harness between the first power supply module and the device to be tested is located above the top surface of the second supporting component;

[0015] The second supporting component is used to isolate the connecting wire harness and the device to be tested from the grounding plate.

[0016] Furthermore, the first power supply module includes a power supply, an isolation module and a variable load adjustment module connected in sequence, and the output end of the variable load adjustment module serves as the output end of the first power supply module;

[0017] The isolation module is used to isolate noise in the output voltage of the power supply whose frequency is greater than a preset frequency threshold;

[0018] The variable load adjustment module is used to provide M different types of loads, where M is an integer greater than 1.

[0019] Furthermore, the grounding component is provided with a slide rail; the mobile module includes a first main control module and a P-axis mechanical arm unit and a pulley unit respectively connected to the first main control module, where P is an integer greater than 1;

[0020] The P-axis robotic arm unit includes a robotic arm gripping module and P groups of first control submodules, each of which includes a robotic arm controller and a first drive module. The first main control module, the robotic arm controller, the first drive module, and the robotic arm gripping module are connected in sequence; the robotic arm gripping module is used to grip the antenna;

[0021] The pulley unit includes a support base, a pulley and a corresponding second control submodule, the top of the support base is used to support the robotic arm gripping module, and the bottom of the support base is provided with the pulley, the second control submodule includes a pulley controller and a second drive module, the first main control module, the pulley controller, the second drive module and the pulley are connected in sequence;

[0022] The first main control module is also connected to the control module, and is used to receive a first control instruction sent by the control module, so as to control the movement of the robotic arm clamping module through the first control sub-module of the P group according to the first control instruction, so as to drive the movement of the antenna, and thereby adjust the position and / or angle of the antenna relative to the device to be tested; and receive a second control instruction sent by the control module, so as to control the pulley to slide on the slide rail through the second control sub-module according to the second control instruction, so as to adjust the position of the antenna relative to the device to be tested.

[0023] Furthermore, the control module includes an upper master control module, a second main control module, a communication module and an interaction module;

[0024] The upper master control module is connected to the radio frequency signal generation module, the second main control module is connected to the upper master control module through the communication module, and the second main control module is also connected to the first main control module and the interaction module;

[0025] The upper master control module is used to receive the current test requirements so as to control the RF signal generation module to output the corresponding target RF signal according to the test requirements; and store and / or display the test data of the device to be tested sent by the second main control module;

[0026] The second main control module is used to generate the first control instruction or the second control instruction according to the preset test strategy of the test requirement and send it to the first main control module; and store test data, and / or display the test data through the interactive module, and / or send the test data to the upper master control module through the communication module, wherein the test requirement is sent by the upper computer through the communication module, or obtained through the interactive module.

[0027] Furthermore, the mobile module further includes a first optical terminal; the control module further includes a second optical terminal;

[0028] The input end of the first optical terminal is connected to the output end of the second optical terminal through an optical fiber, and the output end is connected to the first main control module;

[0029] The input end of the second optical terminal is connected to the second main control module.

[0030] To solve the above technical problems, the present invention further provides a method for automatically testing device immunity, which is applied to the control module in the device for automatically testing device immunity as described above. The method for automatically testing device immunity includes:

[0031] Determine the target RF signal based on current test requirements;

[0032] According to a preset test strategy, the movement of the mobile module is controlled to drive the movement of the antenna, and then the position and / or angle of the antenna relative to the device to be tested is adjusted to control the RF signal generation module to output the target RF signal so that the target RF signal is transmitted through the antenna.

[0033] Furthermore, controlling the movement of the mobile module to move the antenna according to a preset test strategy, thereby adjusting the position and / or angle of the antenna relative to the device to be tested, so as to control the RF signal generation module to output the target RF signal, includes:

[0034] According to the size of the device to be tested, the device to be tested is divided into Q sub-areas to be tested, where Q is an integer greater than 1. Then, for each sub-area to be tested, the following steps are performed respectively:

[0035] Controlling the movement module to move the antenna so as to move the antenna to the sub-area to be tested and aligning the center of the antenna with the sub-area to be tested;

[0036] Controlling the movement module to move so that the orthogonal direction between the antenna and the device under test is a first angle, thereby controlling the radio frequency signal generation module to output the target radio frequency signal;

[0037] Controlling the movement module to adjust the orthogonal direction between the antenna and the device under test to a second angle, thereby controlling the radio frequency signal generation module to output the target radio frequency signal;

[0038] Controlling the movement of the moving module to move the antenna so that the antenna blades are aligned with the sub-area to be tested;

[0039] The moving module is controlled to move so that the orthogonal direction between the antenna and the device under test is the first angle, and the radio frequency signal generating module is controlled to output the target radio frequency signal.

[0040] Furthermore, after controlling the radio frequency signal generation module to output the target radio frequency signal, the method further includes:

[0041] Store and / or display test data corresponding to the device under test; the test data includes response data of the device under test under the electromagnetic waves emitted by the antenna, and / or the current position and angle of the antenna relative to the sub-area to be tested, and / or the forward power, reverse power and standing wave ratio corresponding to the actual output target RF signal.

[0042] The present application provides an automatic test device and method for device immunity, which includes a mobile module, an antenna, a first support component, a grounding component and a second power supply module arranged in a shielding box, and a control module and a radio frequency signal generation module arranged outside the shielding box. The first power supply module is used to power the device to be tested to ensure that the device to be tested is tested under normal working conditions; the control module is used to control the movement of the mobile module according to a preset test strategy to drive the movement of the antenna, thereby adjusting the position and / or angle of the antenna relative to the device to be tested, and controlling the radio frequency signal generation module to output the corresponding target radio frequency signal according to the current test requirements, so that the target radio frequency signal is transmitted through the antenna. It can be seen that this solution does not require manual adjustment of the antenna, and can flexibly adjust the position and / or angle of the antenna relative to the device to be tested according to the actual application requirements to adapt to different test requirements. It can also output the corresponding target radio frequency signal on demand, making the solution widely applicable and highly automated, easy to operate, and can ensure consistent test conditions during multiple tests. It has strong repeatability and is conducive to practical application.

[0043] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0045] Figure 1 A schematic structural diagram of an automatic device for testing immunity of equipment provided by the present invention;

[0046] Figure 2A schematic structural diagram of another device immunity automatic testing device provided by the present invention;

[0047] Figure 3 A structural diagram of a mobile module provided by the present invention;

[0048] Figure 4 A schematic structural diagram of a control module provided by the present invention;

[0049] Figure 5 The present invention provides a flow chart of a method for automatically testing the immunity of equipment. DETAILED DESCRIPTION

[0050] The core of the present invention is to provide an automatic test device and method for equipment immunity, which has wide applicability, high degree of automation, easy operation, can ensure consistent test conditions during multiple tests, has strong repeatability, and is conducive to practical application.

[0051] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0052] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0053] Please refer to Figure 1 , Figure 1 This is a structural schematic diagram of an automatic test device for equipment immunity provided by the present invention.

[0054] The device includes a mobile module 11, an antenna 12, a first support component 13, a grounding component 14, and a first power supply module 15, which are arranged in a shielding box 1, and a control module 2 and a radio frequency signal generation module 3, which are arranged outside the shielding box 1.

[0055] The control module 2 is connected to the RF signal generating module 3 and the mobile module 11 respectively, and the antenna 12 is connected to the RF signal generating module 3 and the mobile module 11 respectively; the grounding component 14 is provided on the first supporting component 13, the first power supply module 15 and the device to be tested 16 are both provided on the grounding component 14, and the grounding ends of the first power supply module 15 and the device to be tested 16 are connected to the grounding component 14, and the output end of the first power supply module 15 is connected to the power input end of the device to be tested 16;

[0056] The first power supply module 15 is used to supply power to the device under test 16;

[0057] The control module 2 is used to control the movement of the moving module 11 according to a preset test strategy to drive the movement of the antenna 12, thereby adjusting the position and / or angle of the antenna 12 relative to the device to be tested 16, and controlling the RF signal generation module 3 to output the corresponding target RF signal according to the current test requirements, so that the target RF signal is transmitted through the antenna 12.

[0058] In this embodiment, the device to be tested 16 here can be various devices that need to be tested for EMC, such as various automobile parts including air-conditioning panels, seat switches and instrument panels, etc., or various communication equipment, such as routers, mobile phones, etc., and various electronic devices such as electrocardiographs, without special limitation here; the shielding box 1 here can specifically be a darkroom, and absorbing materials can be arranged inside the shielding box 1 to absorb electromagnetic waves, thereby making the inside of the shielding box 1 an environment without electromagnetic wave reflection, so as to avoid affecting the accuracy of the equipment immunity test.

[0059] Specifically, the control module 2 and the RF signal generating module 3 can be specifically arranged in the control room outside the shielding box 1; the RF signal generating module 3 here may include an RF signal generator, a power amplifier, a directional coupler and a power meter, wherein the RF signal generator, the power amplifier and the directional coupler are connected in sequence, and the directional coupler is also connected to the power meter and the antenna 12, the RF signal generator is used to generate an RF signal of a specific frequency and power to simulate an interference source; the power amplifier is used to amplify the output power of the above-mentioned RF signal to ensure that the strength of the output RF signal is sufficient for anti-interference testing; the directional coupler is used to separate the RF signal, and the separated first part of the RF signal is used as the target RF signal, so that the target RF signal is transmitted through the antenna 12, so that the antenna 12 transmits an electromagnetic wave of corresponding frequency and intensity ( Figure 1The electromagnetic waves emitted by antenna 12 toward device under test 16 are represented by a dashed arrow (indicated by a dashed line with an arrow) to detect the immunity of device under test 16 in an electromagnetic interference environment. The separated second portion of the RF signal is sent to a power meter for detection and measurement. The power meter is used to measure the power of the received RF signal to determine whether the output target RF signal meets the requirements of the current test needs. It is understood that, based on different test requirements, the RF signal generation module 3 can be controlled to output different target RF signals to simulate different signal environments, which is conducive to better testing and evaluating the immunity capability and performance of device under test 16.

[0060] The first supporting member 13 here can be a member of various structures that can realize the supporting function, including but not limited to a table; please refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of another device immunity automatic test device provided by the present invention, wherein Figure 2 Due to the limitation of the focus of the picture display, only the module settings inside the shielding box 1 are shown, and the connection with the control module 2 and the radio frequency signal generation module 3 outside the shielding box 1 is temporarily omitted. Figure 2 In the description, the first supporting component 13 is taken as a table as an example. The table can be a wooden table, including a wooden table top 131 and four wooden legs 132, so as to realize the supporting function simply and reliably without affecting the accuracy of the equipment immunity test.

[0061] In summary, the present application provides an automatic test device for device immunity, which does not require manual adjustment of the antenna, reduces the risk of radiation exposure, is safer, and reduces labor costs; it can flexibly adjust the position and / or angle of the antenna relative to the device to be tested according to the actual application needs to adapt to different test needs, and can output the corresponding target RF signal on demand, making the solution widely applicable and highly automated, easy to operate, and reducing dependence on professional operators. Even the test results obtained by different operators at different times relying on the device are comparable, which is conducive to meeting standardized testing requirements, and this automatic testing method is conducive to speeding up the test speed, improving the test efficiency, and significantly shortening the test cycle, which is especially suitable for large-scale or high-frequency test scenarios; the test conditions can also be guaranteed to be consistent during multiple tests, reducing errors in human operation, with strong repeatability, and the test results are more accurate and reliable. It can support high-precision, high-complexity, and high-compliance testing requirements, which is conducive to practical applications.

[0062] Based on the above embodiment:

[0063] In some embodiments, the grounding component 14 includes a grounding plate 141 and N grounding plates 142 , where N is an integer greater than 1;

[0064] The grounding plate 141 is disposed on the supporting surface of the first supporting member 13 . The first power supply module 15 and the device under test 16 are both disposed on the grounding plate 141 , and the grounding terminals of the first power supply module 15 and the device under test 16 are connected to the grounding plate 141 .

[0065] One end of each grounding plate 142 is connected to the grounding plate 141 , and the other end is connected to the shell of the shielding box 1 , so that the grounding plate 142 , the shell and the grounding plate 141 are connected to a common ground.

[0066] In this embodiment, the material of the ground plate 141 is, but not limited to, copper; Figure 2 As shown, the grounding plate 141 here can be a grounding plate, which can be specifically arranged above the wooden table top 131, and Figure 2 Taking N=4 as an example, and limited by the focus of the figure, the connection diagram between each grounding plate 142 and the housing is omitted for the time being. It can be understood that the grounding plate 142 serves as an electrical bonding medium, so that the grounding plate 142, the housing, and the grounding plate 141 are all connected to the same ground. That is, the potential of the grounding plate 141 is consistent with the earth. The grounding plate 141 can provide a stable reference ground plane for the device under test 16, ensuring the accuracy and consistency of the device immunity test results, and facilitating the accurate performance of the device immunity test. In addition, when there are multiple grounding plates 142, the distance between each grounding plate 142 shall not exceed 300mm, and the DC resistance shall not exceed 2.5mΩ.

[0067] In some embodiments, further comprising a second support member;

[0068] The second supporting member is disposed on the ground plate 141 , and the device under test 16 is disposed on the second supporting member, and the connection harness 17 between the first power supply module 15 and the device under test 16 is located above the top surface of the second supporting member;

[0069] The second supporting component is used to isolate the connecting harness 17 and the device to be tested 16 from the grounding plate 141 .

[0070] In this embodiment, the second support member can be regarded as an insulating support, and the second support member can be used to isolate the connecting harness 17 and the device to be tested 16 from the ground plate, thereby preventing the connecting harness 17 and the device to be tested 16 from directly contacting the ground plate 141 and affecting the test results. Figure 2 , Figure 2 Taking the second supporting component including the first plate 110 and the second plate 111 as an example, the first plate 110 is used to support the device under test 16 , and its specific size can be selected according to the size of the device under test 16 ; the second plate 112 is used to support the connecting harness 17 .

[0071] In some embodiments, the first power supply module 15 includes a power supply 151, an isolation module 152, and a variable load adjustment module 153 connected in sequence, and the output end of the variable load adjustment module 153 serves as the output end of the first power supply module 15;

[0072] The isolation module 152 is used to isolate the noise with a frequency greater than a preset frequency threshold in the output voltage of the power supply 151;

[0073] The variable load adjustment module 153 is configured to provide M different types of loads, where M is an integer greater than 1.

[0074] In this embodiment, the power supply 151 is used to provide a stable power supply that meets the power supply requirements of the device to be tested 16, ensuring that the device to be tested 16 is tested under normal working conditions; the isolation module 152 can specifically be an artificial network, that is, a power supply impedance stabilization network, so as to isolate the high-frequency noise in the output voltage of the power supply 151, provide standardized impedance for the test, and ensure the consistency and comparability of the test results. The preset frequency threshold here can be flexibly set according to actual needs; the variable load adjustment module 153 can specifically be a load simulator, which is used to simulate the actual load and provide M different types of loads. The loads provided here can be resistive loads, inductive loads, capacitive loads, etc., and no special limitations are made here.

[0075] In some embodiments, a slide rail 142 is provided on the grounding component 14; the mobile module 11 includes a first main control module 21 and a P-axis robotic arm unit and a pulley unit respectively connected to the first main control module 21, where P is an integer greater than 1;

[0076] The P-axis robotic arm unit includes a robotic arm gripping module 145 and a P group of first control submodules 22. Each first control submodule 22 includes a robotic arm controller and a first drive module. The first main control module 21, the robotic arm controller, the first drive module, and the robotic arm gripping module 145 are sequentially connected. The robotic arm gripping module 145 is used to grip the antenna 12.

[0077] The pulley unit includes a support base 144, a pulley 143, and a corresponding second control submodule 23. The top of the support base 144 is used to support the robot arm gripping module 145. The bottom of the support base 144 is provided with a pulley 143. The second control submodule 23 includes a pulley controller and a second drive module. The first main control module 21, the pulley controller, the second drive module, and the pulley 143 are connected in sequence.

[0078] The first main control module 21 is also connected to the control module 2, and is used to receive a first control instruction sent by the control module 2, so as to control the movement of the robotic arm clamping module 145 through the first control sub-module 22 of the P group according to the first control instruction, so as to drive the movement of the antenna 12, and thereby adjust the position and / or angle of the antenna 12 relative to the device to be tested 16; receive a second control instruction sent by the control module 2, so as to control the pulley 143 to slide on the slide rail 142 through the second control sub-module 23 according to the second control instruction, so as to adjust the position of the antenna 12 relative to the device to be tested 16.

[0079] In this embodiment, Figure 2 As shown, a slide rail 142 can be provided on the ground plate, and the slide rail 142 is used to provide a sliding track for the pulley 143 to realize the free movement of the mobile module 11 relative to the ground plate 141, so as to adjust the position of the antenna 12 relative to the device to be tested 16; the manipulator clamping module 145 may include a manipulator and a manipulator connected thereto, the manipulator is used to clamp the antenna 12, and the movement of the manipulator arm drives the manipulator to move and thereby adjust the height and direction of the antenna 12, so as to adjust the position and / or angle of the antenna 12 relative to the device to be tested 16. Of course, the manipulator itself can also achieve a certain degree of pitch and / or rotation. , to adjust the height and direction of the antenna 12, which is not particularly limited here; in addition, the material used for the robotic arm and the manipulator here can be a metal material, but preferably, the material used for the robotic arm and the manipulator here can be a non-metallic material, which is conducive to better ensuring the accuracy of the equipment anti-interference test; the P-axis robotic arm unit here can be a four-axis robotic arm unit to achieve four degrees of freedom of movement, or a five-axis robotic arm unit to achieve five degrees of freedom of movement, or a six-axis robotic arm unit to achieve six degrees of freedom of movement. There is no special limitation here, and it can be flexibly set according to actual needs.

[0080] For details, please refer to Figure 3 , Figure 3 This is a structural diagram of a mobile module provided by the present invention, the first main control module 21 can be a first main controller, Figure 3 The ellipsis in the figure indicates that there are P groups of first control submodules 22. For any group of first control submodules 22, the first drive module may include a driver and a motor, and the output end of each motor is connected to the manipulator gripping module 145 to achieve control of the manipulator gripping module 145 in P degrees of freedom; the number of pulleys 143 is not particularly limited here, and can be set according to actual needs to ensure that the pulleys 143 can slide reliably on the slide rails 142; more specifically, Figure 3In the figure, the pulley 143 is specifically divided into a first pulley and a second pulley as an example. For the first pulley, the corresponding second control submodule 23 may include a first pulley controller and a second drive module, and the second drive module may include a first motor driver and a first motor; for the second pulley, the corresponding second control submodule 23 may include a second pulley controller and a second drive module, and the second drive module may include a second motor driver and a second motor.

[0081] In addition, the device may also include a first power supply module arranged in the shielding box 1 to supply power to the above-mentioned drivers, motors, controllers, and electrical equipment such as the first optical terminal 24 described in the following embodiments. The first power supply module may specifically include a first socket, a filter and a first voltage conversion module connected in sequence. The first socket is used to connect an external power supply, which can be a 220V 50Hz power input; the filter is used to filter out noise in the external power input and then output it to the voltage conversion module; the first voltage conversion module is used to convert AC power into DC power to power the above-mentioned electrical equipment.

[0082] It can be understood that the movement control of the robotic arm clamping module 145 is achieved through the first control submodule 22, and the movement control of the pulley 143 is achieved through the second control submodule 23. This setting of separating multiple control operations is conducive to the parallel processing of multiple control tasks, improving processing efficiency, and improving the emergency response capability when the control module responsible for a control operation fails; in addition, it is conducive to meeting more complex test scenarios (such as multi-angle, multi-distance testing) and improving the coverage and comprehensiveness of the test.

[0083] In some embodiments, the control module 2 includes an upper master control module 31 , a second master control module 32 , a communication module, and an interaction module;

[0084] The upper master control module 31 is connected to the radio frequency signal generating module 3, and the second master control module 32 is connected to the upper master control module 31 through the communication module. The second master control module 32 is also connected to the first master control module 21 and the interaction module;

[0085] The upper master control module 31 is used to receive the current test requirements, so as to control the RF signal generation module 3 to output the corresponding target RF signal according to the test requirements; and to store and / or display the test data of the device to be tested 16 sent by the second main control module 32;

[0086] The second main control module 32 is used to generate a first control instruction or a second control instruction according to a preset test strategy of the test requirements and send it to the first main control module 21; and store test data, and / or display test data through the interactive module, and / or send test data to the upper master control module 31 through the communication module, wherein the test requirements are sent by the upper computer through the communication module, or obtained through the interactive module.

[0087] Specifically, the upper master control module 31 here can be a host computer, which can be connected to the RF signal generation module 3 to control the RF signal generation module 3 to output the corresponding target RF signal; and the RF signal generation module 3 can be specifically set in a combination cabinet, then the combination cabinet can also include a network switch for data transmission and stable communication. The RF signal generation module 3 is connected to the host computer through the network switch. The host computer is used to coordinate the collaborative work between the RF signal generation module 3 and the second main control module 32 and other modules to ensure the accuracy and reliability of the test.

[0088] The communication module here includes but is not limited to various communication modules that can realize wireless communication or wired communication to ensure data interaction between the second main control module 32 and the upper master control module 31. Specifically, the communication module may include a network cable, and the second main control module 32 is connected to the upper master control module 31 through the network cable. In addition, it can also include an expansion dock 34, and the second main control module 32 is connected to one end of the expansion dock 34 through a USB cable (Universal Serial Bus), and the other end of the expansion dock 34 is connected to the upper master control module 31 through a network cable. It can be seen that the setting of the expansion dock 34 is conducive to providing additional interfaces to expand the connection capabilities between modules.

[0089] Please refer to Figure 4 , Figure 4This is a schematic diagram of the structure of a control module provided by the present invention. Specifically, the interactive module may include a switch module, a display module 35 (e.g., a display screen), and a button input module 36. The switch module is used for manually controlling the on / off state of the second main control module 32 by the user. The display module 35 is used to display test data and the current device status of the second main control module 32, and may also provide a human-computer interaction interface for user operation, etc., without particular limitation herein. The button input module 36 provides input buttons for the user to enter current test requirements, which may include the frequency and power of the target RF signal to be transmitted. Of course, since the upper-level master control module 31 can be flexibly arranged according to actual needs to support remote control and intelligent management, the user may also directly enter the corresponding test requirements on the upper-level master control module 31, which will then be sent to the second main control module 32 via the communication module. The test data herein includes, but is not limited to, the response data of the device under test 16 to the electromagnetic waves transmitted by the antenna 12, and / or the forward power and / or reverse power and / or standing wave ratio of the target RF signal actually output.

[0090] In addition, it can also include a second power supply module arranged outside the shielding box 1 to supply power to the above-mentioned second main control module 32, the interactive module and the second optical terminal 33 described in the following embodiments and other electrical equipment. The second power supply module can specifically include a second socket and a second voltage conversion module connected in sequence. The second socket is used to connect an external power supply, which can be a 220V 50Hz power input; the second voltage conversion module is connected to the switch module and is used to work when the switch module is in the on state to convert AC power into DC power, thereby supplying power to the above-mentioned electrical equipment.

[0091] In addition, it is further considered that in the current related technologies, the test results of the device to be tested 16 are usually recorded manually, which is cumbersome and prone to errors, difficult to monitor in real time, and has low test efficiency. In the present application, the test data generated when the immunity test of the device to be tested 16 is performed can be actively stored and displayed in the second main control module 32 and / or the upper master control module 31, realizing automatic recording and real-time monitoring of the test data, ensuring the integrity and traceability of the data, and facilitating subsequent analysis and report generation.

[0092] It can be understood that the control of the RF signal generating module 3 is achieved through the upper master control module 31, and the control of the first master control module 21 is achieved through the second main control module 32, thereby achieving control of the robotic arm clamping module 145 and the pulley 143. This setting of separating multiple control operations is conducive to parallel processing of multiple control tasks, improving processing efficiency, and improving the emergency response capability when the control module responsible for a control operation fails; and the second main control module 32 and the upper master control module 31 can be set at different positions according to actual conditions, which is conducive to remote control and intelligent management, convenient for technical personnel to remotely monitor and operate, and at the same time provides a basis for future intelligent upgrades, such as AI (Artificial Intelligence) to further optimize the test path.

[0093] In some embodiments, the mobile module 11 further includes a first optical terminal 24; the control module 2 further includes a second optical terminal 33;

[0094] The input end of the first optical terminal 24 is connected to the output end of the second optical terminal 33 via an optical fiber, and the output end is connected to the first main control module 21;

[0095] An input end of the second optical terminal 33 is connected to the second main control module 32 .

[0096] Specifically, first optical terminal 24 and second optical terminal 33 are used to convert electrical signals into optical signals, which can better enable communication between first main control module 21 located within shielding box 1 and second main control module 32 located outside shielding box 1, thereby avoiding electromagnetic interference. More specifically, second main control module 32 and second optical terminal 33 are connected via a network cable, and first main control module 21 and first optical terminal 24 are connected via a network cable.

[0097] Please refer to Figure 5 , Figure 5 The present invention provides a flow chart of a method for automatically testing the immunity of equipment.

[0098] The device immunity automatic testing method is applied to the control module in the device immunity automatic testing apparatus as described above. The device immunity automatic testing method includes:

[0099] S11: Determine the target RF signal according to the current test requirements;

[0100] S12: According to the preset test strategy, the movement module 11 is controlled to move to drive the antenna 12 to move, and then the position and / or angle of the antenna 12 relative to the device to be tested 16 is adjusted to control the RF signal generation module 3 to output the target RF signal, so that the target RF signal is transmitted through the antenna 12.

[0101] For an introduction to the automatic device immunity testing method provided in this application, please refer to the embodiment of the above-mentioned automatic device immunity testing device, which will not be repeated here.

[0102] It should be noted that in order to ensure that the RF signal generating module 3 outputs the target RF signal corresponding to the test requirements, the test level must be calibrated first. The calibration method can be to move the antenna 12 to a position at least one meter away from the upper surface of the device to be tested 16, at least one meter away from the shell of the shielding box 1, and at least one meter away from the ground plane through the action of the moving module 11 to improve the accuracy of the calibration; based on the fact that the sine wave is a standard waveform for simulating narrowband RF interference, an unmodulated sine wave is used for calibration. The upper computer controls the RF signal generator to generate an RF signal of a specific frequency, the power amplifier amplifies the RF signal, the directional coupler separates the signal, and the power meter measures the power corresponding to the RF signal. The net power is adjusted until the predetermined test level corresponding to the test requirements is reached. It is determined that the output at this time is the target RF signal, which meets the test requirements. In addition, the net power and forward power during calibration can also be recorded as test data for subsequent inspection.

[0103] In some embodiments, controlling the movement of the moving module 11 to move the antenna 12 according to a preset test strategy, thereby adjusting the position and / or angle of the antenna 12 relative to the device under test 16 to control the RF signal generation module 3 to output the target RF signal, includes:

[0104] According to the size of the device to be tested 16, the device to be tested 16 is divided into Q sub-areas to be tested, where Q is an integer greater than 1. Then, for each sub-area to be tested, the following steps are performed respectively:

[0105] Controlling the movement module 11 to move the antenna 12 so that the antenna 12 moves to the sub-area to be tested and the center of the antenna 12 is aligned with the sub-area to be tested;

[0106] Controlling the movement module 11 to move so that the orthogonal direction between the antenna 12 and the device under test 16 is at a first angle, thereby controlling the RF signal generation module 3 to output a target RF signal;

[0107] Controlling the movement module 11 to adjust the orthogonal direction between the antenna 12 and the device under test 16 to a second angle, thereby controlling the RF signal generation module 3 to output a target RF signal;

[0108] Controlling the movement module 11 to move the antenna 12 so that the blades of the antenna 12 are aligned with the sub-area to be tested;

[0109] The moving module 11 is controlled to move so that the orthogonal direction between the antenna 12 and the device under test 16 is a first angle, and the radio frequency signal generating module 3 is controlled to output a target radio frequency signal.

[0110] It should be noted that dividing the device to be tested 16 into Q test sub-areas and performing the test steps sequentially helps ensure more accurate test results. Specifically, the size of the test sub-areas here can be 100 mm × 100 mm. The first angle can be 0°, and the second angle can be 90°.

[0111] In some embodiments, after controlling the RF signal generating module 3 to output the target RF signal, the method further includes:

[0112] Store and / or display test data corresponding to the device under test 16, the test data including the response data of the device under test 16 under the electromagnetic waves emitted by the antenna 12, and / or the current position and angle of the antenna 12 relative to the sub-area to be tested, and / or the forward power, reverse power and standing wave ratio corresponding to the actual output target RF signal.

[0113] Specifically, after each control of the RF signal generation module 3 to output the target RF signal, the corresponding response data of the device to be tested 16 under the electromagnetic wave emitted by the antenna 12 can be actively recorded. The response data includes but is not limited to the video monitoring data corresponding to the device to be tested 16 (the video monitoring data can be obtained by the camera module provided in the shielding box 1) so as to monitor the working state of the device to be tested 16 under electromagnetic interference, etc., and then used for subsequent anti-interference performance evaluation; In addition, the storage test data described here is conducive to subsequent technical personnel to check, and after the test of each sub-area to be tested is completed, a test report can be generated for the obtained test data so that subsequent test personnel can better and more conveniently evaluate the anti-interference performance of the sample, so that the test data can be directly stored in the form of a test report; The display test data described here is conducive to the technician to intuitively obtain the test results of the device to be tested 16, and when the test results are organized into a test report, the test report can be directly displayed. It can be seen that this solution is conducive to the automatic storage and recording of test data and real-time monitoring, ensuring the integrity and traceability of the data, and facilitating subsequent analysis.

[0114] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. Relational terms such as first and second are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements limited by the sentence "comprising a" do not exclude the presence of other identical elements in the process, method, article or equipment including the elements.

[0115] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is to be construed in the widest manner consistent with the principles and novel features disclosed herein.

Claims

1. An automatic test device for equipment immunity, characterized in that: It includes a mobile module, an antenna, a first supporting component, a grounding component and a first power supply module arranged in a shielding box, and a control module and a radio frequency signal generating module arranged outside the shielding box; The control module is connected to the radio frequency signal generating module and the mobile module respectively, and the antenna is connected to the radio frequency signal generating module and the mobile module respectively; the grounding component is arranged on the first supporting component, the first power supply module and the device to be tested are both arranged on the grounding component, and the grounding ends of the first power supply module and the device to be tested are connected to the grounding component, and the output end of the first power supply module is connected to the power input end of the device to be tested; The first power supply module is used to supply power to the device under test; The control module is used to control the movement of the mobile module to drive the antenna to move according to a preset test strategy, thereby adjusting the position and / or angle of the antenna relative to the device to be tested, and controlling the RF signal generation module to output the corresponding target RF signal according to the current test requirements, so that the target RF signal is transmitted through the antenna.

2. The automatic device for testing equipment immunity according to claim 1, characterized in that: The grounding component includes a grounding plate and N grounding plates, where N is an integer greater than 1; The grounding plate is arranged on the supporting surface of the first supporting component, the first power supply module and the device to be tested are both arranged on the grounding plate, and the grounding ends of the first power supply module and the device to be tested are connected to the grounding plate; One end of each grounding plate is connected to the grounding plate, and the other end is connected to the shell of the shielding box, so that the grounding plate, the shell and the grounding plate are connected to a common ground.

3. The automatic device for testing equipment immunity according to claim 2, characterized in that: Also comprising a second support member; The second supporting component is arranged on the ground plate, and the device to be tested is arranged on the second supporting component, and the connection harness between the first power supply module and the device to be tested is located above the top surface of the second supporting component; The second supporting component is used to isolate the connecting wire harness and the device to be tested from the grounding plate.

4. The automatic device for testing equipment immunity according to claim 1, characterized in that: The first power supply module includes a power supply, an isolation module and a variable load adjustment module connected in sequence, and the output end of the variable load adjustment module serves as the output end of the first power supply module; The isolation module is used to isolate noise in the output voltage of the power supply whose frequency is greater than a preset frequency threshold; The variable load adjustment module is used to provide M different types of loads, where M is an integer greater than 1.

5. The automatic device for testing equipment immunity according to any one of claims 1 to 4, characterized in that: The grounding component is provided with a slide rail; the mobile module includes a first main control module and a P-axis mechanical arm unit and a pulley unit respectively connected to the first main control module, where P is an integer greater than 1; The P-axis robotic arm unit includes a robotic arm gripping module and P groups of first control submodules, each of which includes a robotic arm controller and a first drive module. The first main control module, the robotic arm controller, the first drive module, and the robotic arm gripping module are connected in sequence; the robotic arm gripping module is used to grip the antenna; The pulley unit includes a support base, a pulley and a corresponding second control submodule, the top of the support base is used to support the robotic arm gripping module, and the bottom of the support base is provided with the pulley, the second control submodule includes a pulley controller and a second drive module, the first main control module, the pulley controller, the second drive module and the pulley are connected in sequence; The first main control module is also connected to the control module, and is used to receive a first control instruction sent by the control module, so as to control the movement of the robotic arm clamping module through the first control sub-module of the P group according to the first control instruction, so as to drive the movement of the antenna, and thereby adjust the position and / or angle of the antenna relative to the device to be tested; and receive a second control instruction sent by the control module, so as to control the pulley to slide on the slide rail through the second control sub-module according to the second control instruction, so as to adjust the position of the antenna relative to the device to be tested.

6. The automatic device for testing equipment immunity according to claim 5, characterized in that: The control module includes an upper master control module, a second main control module, a communication module and an interaction module; The upper master control module is connected to the radio frequency signal generation module, the second main control module is connected to the upper master control module through the communication module, and the second main control module is also connected to the first main control module and the interaction module; The upper master control module is used to receive the current test requirements so as to control the RF signal generation module to output the corresponding target RF signal according to the test requirements; and storing and / or displaying the test data of the device to be tested sent by the second main control module; The second main control module is used to generate the first control instruction or send the second control instruction to the first main control module according to the test requirement preset test strategy; And store the test data, and / or display the test data through the interactive module, and / or send the test data to the upper master control module through the communication module, wherein the test requirement is sent by the upper computer through the communication module, or obtained through the interactive module.

7. The automatic device for testing equipment immunity according to claim 6, characterized in that: The mobile module also includes a first optical terminal; the control module also includes a second optical terminal; The input end of the first optical terminal is connected to the output end of the second optical terminal through an optical fiber, and the output end is connected to the first main control module; The input end of the second optical terminal is connected to the second main control module.

8. A method for automatically testing device immunity, characterized in that: A control module applied to the device for automatic testing of device immunity according to any one of claims 1 to 7, wherein the method for automatic testing of device immunity comprises: Determine the target RF signal based on current test requirements; According to a preset test strategy, the movement of the mobile module is controlled to drive the movement of the antenna, and then the position and / or angle of the antenna relative to the device to be tested is adjusted to control the RF signal generation module to output the target RF signal so that the target RF signal is transmitted through the antenna.

9. The automatic test method for device immunity according to claim 8, characterized in that: Controlling the movement of the moving module to move the antenna according to a preset test strategy, thereby adjusting the position and / or angle of the antenna relative to the device under test to control the RF signal generation module to output the target RF signal, including: According to the size of the device to be tested, the device to be tested is divided into Q sub-areas to be tested, where Q is an integer greater than 1. Then, for each sub-area to be tested, the following steps are performed respectively: Controlling the movement module to move the antenna so as to move the antenna to the sub-area to be tested and aligning the center of the antenna with the sub-area to be tested; Controlling the movement module to move so that the orthogonal direction between the antenna and the device under test is a first angle, thereby controlling the radio frequency signal generation module to output the target radio frequency signal; Controlling the movement module to adjust the orthogonal direction between the antenna and the device under test to a second angle, thereby controlling the radio frequency signal generation module to output the target radio frequency signal; Controlling the movement of the moving module to move the antenna so that the antenna blades are aligned with the sub-area to be tested; The moving module is controlled to move so that the orthogonal direction between the antenna and the device under test is the first angle, and the radio frequency signal generating module is controlled to output the target radio frequency signal.

10. The automatic test method for device immunity according to claim 8, characterized in that: After controlling the radio frequency signal generation module to output the target radio frequency signal, the method further includes: Store and / or display test data corresponding to the device under test; the test data includes response data of the device under test under the electromagnetic waves emitted by the antenna, and / or the current position and angle of the antenna relative to the sub-area to be tested, and / or the forward power, reverse power and standing wave ratio corresponding to the actual output target RF signal.

Images