CN117347666A - Interface jig for server electromagnetic compatibility test, test method and computer - Google Patents
Interface jig for server electromagnetic compatibility test, test method and computer Download PDFInfo
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- CN117347666A CN117347666A CN202311277679.4A CN202311277679A CN117347666A CN 117347666 A CN117347666 A CN 117347666A CN 202311277679 A CN202311277679 A CN 202311277679A CN 117347666 A CN117347666 A CN 117347666A
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- 238000000034 method Methods 0.000 claims description 13
- 230000005674 electromagnetic induction Effects 0.000 claims description 11
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- 238000004590 computer program Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 5
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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Abstract
The invention provides an interface jig, a testing method and a computer for electromagnetic compatibility testing of a server, wherein the interface testing jig comprises the following components: the metal interface is configured to be connected with the expansion interface and connected with expansion equipment through the expansion interface; the electronic switch module is provided with a plurality of filtering channels and is respectively connected between the metal interface and the grounding end of the external transfer card of the server through the plurality of filtering channels; the control module is connected with the electronic switch module and is configured to control the connection or disconnection of a plurality of filtering channels of the electronic switch module based on electromagnetic test results so as to control the grounding mode between the metal interface and the grounding end of the external interface transfer card of the server. The interface jig provided by the invention can be understood as a special test tool, can conveniently switch the grounding mode of the server side expansion interface according to the electromagnetic compatibility test result, and improves the electromagnetic compatibility test efficiency.
Description
Technical Field
The invention relates to the field of electromagnetic compatibility testing, in particular to an interface jig, a testing method and a computer for server electromagnetic compatibility testing.
Background
Along with the gradual development of information technology equipment (such as server products and computer products) to the directions of high speed, high sensitivity, high integration and high stability, the requirements on electromagnetic compatibility are also more and more severe, so that electromagnetic compatibility detection (Electro Magnetic Compatibility, EMC) becomes important working content in the early stage of design. The electromagnetic compatibility test is mainly divided into two parts of radiation test and electrostatic test, and is used for detecting whether electromagnetic interference or electrostatic interference generated between connected devices is within the bearable range of each other. Taking a server as an example, the topology structure of the expansion interface is shown in fig. 1: the Switch board is an external interface connection board for expanding the BOX, and the BOX can achieve the purposes of expanding different types of hardware and the quantity thereof, such as expanding a GPU, an HDD or a network card, through interface configuration (such as configuring different interface types, adopting interface chips and peripheral circuits thereof).
However, due to the differences of the interface types, the interface chips and the peripheral circuits thereof, the electromagnetic compatibility conditions of different expansion interfaces are different, some expansion interfaces only need to be grounded in a good structure, and some expansion interfaces need to be grounded in a good structure, and also need to be grounded in a good board, in this case, if the grounding modes of the expansion interfaces are unified without distinction, the electromagnetic compatibility problem is easy to occur, and even if the electromagnetic compatibility problem can be found in the electromagnetic compatibility test process, the rectification is difficult to carry out, or even after the rectification, the mutual influence between the radiation test and the electrostatic test is unavoidable due to the structural fixation of the expansion interfaces, so that the problem that the difference between the introducing effect and the actual rectification effect is too large is easily caused. Therefore, how to perform electromagnetic compatibility testing on a server expansion interface under sufficient conditions to determine an optimal grounding mode of each expansion interface is a technical problem to be solved in the field.
Disclosure of Invention
In order to facilitate the electromagnetic compatibility test and ensure the validity of the test result, in a first aspect of the present invention, an interface fixture for the electromagnetic compatibility test of a server is provided, including: the metal interface is configured to be connected with the expansion interface and connected with expansion equipment through the expansion interface; the electronic switch module is provided with a plurality of filtering channels and is respectively connected between the metal interface and the grounding end of the external transfer card of the server through the plurality of filtering channels; and the control module is connected with the electronic switch module and is configured to control the connection or disconnection of a plurality of filtering channels of the electronic switch module based on an electromagnetic test result so as to control the grounding mode between the metal interface and the grounding end of the server external interface transfer card.
In one or more embodiments, the plurality of filtering channels of the electronic switch module include: a high pass filtering channel, a low pass filtering channel, and a pass-through channel, wherein no filtering occurs when a signal passes through the pass-through channel.
In one or more embodiments, the interface fixture for server electromagnetic compatibility testing of the present invention further comprises: the electromagnetic induction device is arranged near the metal interface, is connected with the control module and is configured to induce abrupt voltage signals on the metal port so as to judge whether electrostatic interference exists on the metal port; when the electromagnetic induction device induces abrupt change of the voltage signal on the metal port, an induction signal is generated and sent to the control module.
In one or more embodiments, the electromagnetic induction device includes: the control chip is connected with the one or more capacitance sensors respectively; when a plurality of capacitance sensors exist, the capacitance sensors are arranged around the metal interface; the control chip is preset with gain configuration and measurement range configuration, wherein the gain configuration is used for controlling the gain of the induction signal, and the measurement range configuration is used for controlling the measurement range of the one or more capacitance sensors.
In one or more embodiments, the control module is further configured to determine whether a conductive channel between the metal interface and a ground end of the external adapter card of the server is a high-pass filtering channel in response to the electromagnetic test result being that the high-frequency radiation test fails; if the electronic switch module is not the high-pass filtering channel, the electronic switch module is controlled to be switched into the high-pass filtering channel; or in response to the electromagnetic test result being that the low-frequency radiation test fails, judging whether a conduction channel between the metal interface and the grounding end of the external transfer card of the server is a low-pass filtering channel; if the low-pass filter channel is not the low-pass filter channel, the electronic switch module is controlled to be switched into the low-pass filter channel; or receiving a specified channel switching signal from the electromagnetic compatibility test system to switch to a specified conduction channel according to the specified channel switching signal.
In one or more embodiments, the control module is further configured to shut off all conductive paths between the metal interface and the ground of the server external interface adapter card in response to receiving the induction signal from the electromagnetic induction device.
In a second aspect of the present invention, an electromagnetic compatibility testing method is provided, the method comprising: configuring the interface jig for the electromagnetic compatibility test of the server according to any one of claims 1-6 on the server side, and connecting an electronic switch module in the interface jig to the grounding end of an external transfer card of the server; the expansion interface is connected through a metal interface in the interface jig, and the expansion equipment is connected through the expansion interface; performing electromagnetic compatibility test on the server and the expansion equipment, and collecting electromagnetic compatibility test results; generating a corresponding channel switching instruction according to the non-passing item in the electromagnetic compatibility test result, and issuing the channel switching instruction to a control module in the interface jig; and responding to the completion feedback of the channel switching instruction returned by the control module in the interface jig, and retesting the failed item.
In one or more embodiments, the failed item in the electromagnetic compatibility test result includes: high frequency radiation test failed, low frequency radiation test failed, and electrostatic test failed.
In one or more embodiments, the generating the corresponding channel switching instruction according to the non-passing item in the electromagnetic compatibility test result includes: responding to the high-frequency radiation test without generating a high-pass filtering channel switching instruction; the channel switch instruction is not generated by generating a low pass filter in response to the low frequency radiation test.
In one or more embodiments, the retesting the failed item in response to receiving an instruction completion response returned by a control module in the interface fixture includes: in response to receiving high-pass filtering channel switching completion feedback returned by a control module in the interface jig, re-executing a high-frequency radiation test; or the low-frequency radiation test is re-executed in response to receiving the low-pass filtering channel switching completion feedback returned by the control module in the interface jig; responding to the passing of the high-frequency radiation test or the low-frequency radiation test, sending a direct channel switching instruction to a control module in the interface jig, and re-executing the high-frequency radiation test or the low-frequency radiation test; and recording the grounding mode of the corresponding expansion interface capable of passing the high-frequency radiation test and the low-frequency radiation test.
In a third aspect of the present invention, a computer device is presented, comprising: at least one processor; and a memory having stored therein an executable computer program for implementing an electromagnetic compatibility test method as in any of the method embodiments described above when executed by the at least one processor.
The beneficial effects of the invention include: the invention provides an interface jig for electromagnetic compatibility testing of a server, which can be understood as a special testing tool, can conveniently switch the grounding mode of an expansion interface at the server side according to an electromagnetic compatibility testing result, improves the electromagnetic compatibility testing efficiency, can determine the optimal combination of corresponding expansion interface configuration and corresponding grounding mode, and can configure the expansion interface and the grounding mode thereof for the server according to the optimal combination in subsequent equipment production.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention and that other embodiments may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the topology of an expansion interface of a conventional server;
fig. 2 is a schematic structural diagram of an interface fixture for electromagnetic compatibility testing of a server according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of an interface fixture for electromagnetic compatibility testing of a server according to a second embodiment of the present invention;
FIG. 4 is a flowchart illustrating an electromagnetic compatibility testing method according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a computer device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
It should be noted that, in the embodiments of the present invention, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present invention, and the following embodiments are not described one by one.
In order to facilitate electromagnetic compatibility testing and ensure validity of test results, the invention provides an interface jig for server electromagnetic compatibility testing, which can be understood as a special test tool, and can conveniently switch the grounding mode of a server side expansion interface according to the electromagnetic compatibility test results, so as to determine the combination of corresponding expansion interface configuration and corresponding grounding mode, and can configure the expansion interface and the grounding mode thereof for a server according to the combination in subsequent equipment production. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 2, a structure of an interface fixture for electromagnetic compatibility testing of a server according to an embodiment of the present invention is shown, including: the metal interface 100, the metal interface 100 is configured to connect with the expansion interface and connect with the expansion device through the expansion interface; the electronic switch module 200 is provided with a plurality of filtering channels, and the electronic switch module 200 is respectively connected between the metal interface and the grounding end of the external transfer card of the server through the plurality of filtering channels; and the control module 300 is connected with the electronic switch module, and is configured to control the connection or disconnection of a plurality of filtering channels of the electronic switch module based on electromagnetic test results so as to control the grounding mode between the metal interface and the grounding end of the external interface transfer card of the server.
Specifically, in practical application, the interface fixture in this embodiment is to replace a part of the expansion interface (mainly replaced by an interface of the server side for connecting the expansion BOX, i.e. the Retimer card in fig. 1) between the server to be tested and the expansion device to be tested, so as to conveniently control the grounding mode of the interface of the server side, and further control the grounding mode of the expansion interface in the expansion BOX. The common grounding modes are three modes of high-pass filtering grounding, low-pass filtering grounding and direct grounding, different expansion interface configurations are weakened according to the type of electromagnetic interference which can be generated by the server equipment and different requirements of different grounding modes, and the different grounding modes are used for passing electromagnetic compatibility tests.
In a further embodiment, the plurality of filtering channels of the electronic switch module of the present invention comprises: a high pass filtering channel, a low pass filtering channel, and a pass-through channel, wherein no filtering occurs when the signal passes through the pass-through channel.
Specifically, when the high-pass filter channel is grounded, the high-frequency radiation test in the electromagnetic compatibility test is most easy to pass, and the low-frequency radiation test is most difficult to pass; similarly, when the low-pass filter channel is grounded, the low-frequency radiation test in the electromagnetic compatibility test is most easy to pass, and the high-frequency radiation test is most difficult to pass; of course, the above situation refers to the specific configuration of each server device, the intensities of the high-frequency radiation and the low-frequency radiation that may be generated by different servers are different, in one case, when the low-frequency radiation of the server is low, the electromagnetic compatibility test requirement can be met by adopting a high-pass filtering grounding mode or a direct connection mode, or when the high-frequency radiation of the server is low, the electromagnetic compatibility test requirement can be met by adopting a low-pass filtering grounding mode or a direct connection mode; therefore, in view of the above, it is necessary to sequentially switch different grounding modes by using the interface fixture in the present embodiment, and record the case that each grounding mode can pass the electromagnetic compatibility test, so as to determine the grounding mode suitable for the corresponding expansion interface.
In a further embodiment, please refer to fig. 3, the interface fixture of the present invention further includes: the electromagnetic induction device 400 is arranged near the metal interface 100 and connected with the control module 300, and is configured to induce abrupt voltage signals on the metal port 100 so as to judge whether electrostatic interference exists on the metal port 100; when the electromagnetic induction device 400 induces abrupt change of the voltage signal on the metal port, an induction signal is generated and transmitted to the control module 300.
Specifically, although the electrostatic test in the electromagnetic compatibility test is irrelevant to the grounding mode, the voltage signal which is suddenly changed on the expansion interface in the electrostatic test process may affect the post-stage circuit through the GND of the board card, so that the connection between the expansion interface and the GND of the board card is preferably disconnected when the electrostatic test is performed. For this reason, the electromagnetic induction device 400 is added to the interface fixture in this embodiment, and is used for detecting the voltage abrupt change on the metal interface, and sending an induction signal to the control module 100 when the voltage abrupt change is detected, so that the control module 100 controls to disconnect all the conduction channels in the electronic switch module 200.
In a further embodiment, an electromagnetic induction device comprises: a control chip 401 and one or more capacitance sensors 402, and the control chip 401 is respectively connected with the one or more capacitance sensors 402; wherein, when there are a plurality of capacitive sensors 402, the plurality of capacitive sensors 402 are disposed around the metal interface 100; the control chip 401 is preset with a gain configuration for controlling the gain of the generated sensing signal and a measurement range configuration for controlling the measurement range of the one or more capacitive sensors.
Specifically, the control chip may employ an AD7746 module of ADI, and multiple capacitive sensors may facilitate more accurate detection of voltage abrupt changes on the metal interface.
In a further embodiment, the control module 300 is further configured to determine whether the conductive channel between the metal interface and the grounding end of the external adapter card of the server is a high-pass filtering channel in response to the electromagnetic test result being that the high-frequency radiation test fails; if the high-pass filter channel is not adopted, the electronic switch module is controlled to be switched into the high-pass filter channel; or in response to the electromagnetic test result that the low-frequency radiation test fails, judging whether a conduction channel between the metal interface and the grounding end of the external transfer card of the server is a low-pass filtering channel; if the low-pass filter channel is not the low-pass filter channel, the electronic switch module is controlled to be switched into the low-pass filter channel; or receiving a specified channel switching signal from the electromagnetic compatibility test system to switch to a specified conduction channel according to the specified channel switching signal.
Specifically, in the high-frequency radiation test process, the reason that the high-frequency radiation test is generally not passed is that a low-pass filtering grounding mode or a direct-pass filtering grounding mode is adopted, so that once the high-frequency radiation test is found to be not passed, the high-pass filtering grounding mode can be immediately switched to, and if the high-frequency radiation test cannot be passed at all when the high-pass filtering grounding mode is adopted, the configuration of an expansion interface in the expansion BOX needs to be adjusted, and the adjustment range comprises the interface type, the adopted interface chip and the peripheral circuit thereof. Similarly, the process for low frequency radiation testing is similar to that described above and will not be described in detail herein.
In a further embodiment, the control module is further configured to shut off all conductive paths between the metal interface and the ground of the server external interface adapter card in response to receiving the sensing signal from the electromagnetic sensing device.
Specifically, when the control module receives the induction signal, it can be judged that electrostatic interference exists on the metal interface, and then the current electrostatic testing state is judged, so that connection between the metal interface and the board card GND is automatically cut off, and influence of electrostatic testing on other modules on the board card is avoided. In some embodiments, the board GND is also required to be structurally grounded to the housing of the server.
In a second aspect of the present invention, an electromagnetic compatibility testing method based on the interface fixture for server electromagnetic compatibility testing in the above embodiment is also provided. Referring to fig. 4, the method includes: step S1, configuring the interface jig for the electromagnetic compatibility test of the server on the server side, and connecting an electronic switch module in the interface jig to the grounding end of an external transfer card of the server; step S2, connecting an expansion interface through a metal interface in the interface jig, and connecting expansion equipment through the expansion interface; s3, performing electromagnetic compatibility test on the server and the expansion equipment, and collecting electromagnetic compatibility test results; step S4, generating a corresponding channel switching instruction according to the non-passing item in the electromagnetic compatibility test result, and issuing the channel switching instruction to a control module in the interface jig; and step S5, responding to the channel switching instruction received back by the control module in the interface jig to complete feedback, and retesting the failed item.
In a further embodiment, the failed item in the electromagnetic compatibility test result comprises: high frequency radiation test failed, low frequency radiation test failed, and electrostatic test failed. The static test is not solved by adjusting the grounding mode, but only by adjusting the interface configuration of the expansion interface.
In a further embodiment, generating a corresponding channel switching instruction according to the non-passing term in the electromagnetic compatibility test result includes: responding to the high-frequency radiation test without generating a high-pass filtering channel switching instruction; the channel switch instruction is not generated by generating a low pass filter in response to the low frequency radiation test.
In a further embodiment, in response to receiving an instruction completion response returned by the control module in the interface jig, retesting the failed item includes: in response to receiving the high-pass filtering channel switching completion feedback returned by the control module in the interface jig, re-executing the high-frequency radiation test; or the low-frequency radiation test is re-executed in response to receiving the feedback of switching completion of the low-pass filtering channel returned by the control module in the interface jig; responding to the passing of the high-frequency radiation test or the low-frequency radiation test, sending a direct channel switching instruction to a control module in the interface jig, and re-executing the high-frequency radiation test or the low-frequency radiation test; and recording the grounding mode of the corresponding expansion interface capable of passing the high-frequency radiation test and the low-frequency radiation test.
Specifically, the electrostatic test is performed after the high-frequency radiation test and the low-frequency radiation test are passed, and the advantage is that the grounding mode can be determined through the high-frequency radiation test and the low-frequency radiation test, the electrostatic test and the grounding mode cannot be realized, and the interface configuration of the expansion interface needs to be adjusted.
In a third aspect of the present invention, a computer device is provided, please refer to fig. 5, comprising:
at least one processor 31; and a storage medium 30, the storage medium 30 having stored therein an executable computer program which, when executed by the at least one processor 31, is adapted to carry out the steps of: step S1, configuring the interface jig for the electromagnetic compatibility test of the server on the server side, and connecting an electronic switch module in the interface jig to the grounding end of an external transfer card of the server; step S2, connecting an expansion interface through a metal interface in the interface jig, and connecting expansion equipment through the expansion interface; s3, performing electromagnetic compatibility test on the server and the expansion equipment, and collecting electromagnetic compatibility test results; step S4, generating a corresponding channel switching instruction according to the non-passing item in the electromagnetic compatibility test result, and issuing the channel switching instruction to a control module in the interface jig; and step S5, responding to the channel switching instruction received back by the control module in the interface jig to complete feedback, and retesting the failed item.
In a further embodiment, the failed item in the electromagnetic compatibility test result comprises: high frequency radiation test failed, low frequency radiation test failed, and electrostatic test failed. The static test is not solved by adjusting the grounding mode, but only by adjusting the interface configuration of the expansion interface.
In a further embodiment, generating a corresponding channel switching instruction according to the non-passing term in the electromagnetic compatibility test result includes: responding to the high-frequency radiation test without generating a high-pass filtering channel switching instruction; the channel switch instruction is not generated by generating a low pass filter in response to the low frequency radiation test.
In a further embodiment, in response to receiving an instruction completion response returned by the control module in the interface jig, retesting the failed item includes: in response to receiving the high-pass filtering channel switching completion feedback returned by the control module in the interface jig, re-executing the high-frequency radiation test; or the low-frequency radiation test is re-executed in response to receiving the feedback of switching completion of the low-pass filtering channel returned by the control module in the interface jig; responding to the passing of the high-frequency radiation test or the low-frequency radiation test, sending a direct channel switching instruction to a control module in the interface jig, and re-executing the high-frequency radiation test or the low-frequency radiation test; and recording the grounding mode of the corresponding expansion interface capable of passing the high-frequency radiation test and the low-frequency radiation test.
Specifically, the electrostatic test is performed after the high-frequency radiation test and the low-frequency radiation test are passed, and the advantage is that the grounding mode can be determined through the high-frequency radiation test and the low-frequency radiation test, the electrostatic test and the grounding mode cannot be realized, and the interface configuration of the expansion interface needs to be adjusted.
The method of the embodiment is matched with the interface jig in the previous embodiment, and the grounding mode of the server side expansion interface can be conveniently switched according to the electromagnetic compatibility test result, so that the combination of the corresponding expansion interface configuration and the corresponding grounding mode is determined, and the expansion interface and the grounding mode thereof can be configured for the server according to the combination in subsequent equipment production.
More specifically, the memory 30 may include one or more computer-readable storage media, which may be non-transitory. Memory 30 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In the present embodiment, the memory 30 is at least used for storing a computer program 301, which, after being loaded and executed by the processor 31, enables implementation of the relevant steps of the electromagnetic compatibility testing method proposed in the foregoing embodiment. In addition, the resources stored in the memory 30 may further include an operating system 302, data 303, and the like, where the storage manner may be transient storage or permanent storage. The operating system 302 may include Windows, unix, linux, among other things. The data 303 may include, but is not limited to, data corresponding to the execution result, and the like.
Processor 31 may include one or more processing cores, such as a 4-core processor, an 8-core processor, or the like. The processor 31 may be implemented in at least one hardware form of DSP (Digital Signal Processing ), FPGA (Field-Programmable Gate Array, field programmable gate array), PLA (Programmable Logic Array ). The processor 31 may also comprise a main processor, which is a processor for processing data in an awake state, also called CPU (Central Processing Unit ); a coprocessor is a low-power processor for processing data in a standby state. In some embodiments, the processor 31 may integrate a GPU (Graphics Processing Unit, image processor) for rendering and drawing of content required to be displayed by the display screen. In some embodiments, the processor 31 may also include an AI (Artificial Intelligence ) processor for processing computing operations related to machine learning.
In some embodiments, the computer device of the present invention may further include a display screen 32, an input/output interface 33, a communication interface 34, a power supply 35, a communication bus 36, a re-timer card 38, and an interface fixture 39 for electromagnetic compatibility testing of the server. Those skilled in the art will appreciate that the architecture shown in fig. 5 is not limiting of the computer device of the present invention, and may include more or fewer components than shown.
The computer equipment in the embodiment can be used as a test platform for electromagnetic compatibility test and also can be used as a complete computer product, and when the computer equipment is used as a computer product, the computer equipment can switch the grounding modes of different expansion interfaces according to the needs of users so as to adapt to different needs.
The foregoing is an exemplary embodiment of the present disclosure, but it should be noted that various changes and modifications could be made herein without departing from the scope of the disclosure as defined by the appended claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the disclosed embodiments may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
It should be understood that as used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly supports the exception. It should also be understood that "and/or" as used herein is meant to include any and all possible combinations of one or more of the associated listed items.
The foregoing embodiment of the present invention has been disclosed with reference to the number of embodiments for the purpose of description only, and does not represent the advantages or disadvantages of the embodiments.
Those of ordinary skill in the art will appreciate that: the above discussion of any embodiment is merely exemplary and is not intended to imply that the scope of the disclosure of embodiments of the invention, including the claims, is limited to such examples; combinations of features of the above embodiments or in different embodiments are also possible within the idea of an embodiment of the invention, and many other variations of the different aspects of the embodiments of the invention as described above exist, which are not provided in detail for the sake of brevity. Therefore, any omission, modification, equivalent replacement, improvement, etc. of the embodiments should be included in the protection scope of the embodiments of the present invention.
Claims (10)
1. An interface jig for electromagnetic compatibility testing of a server, comprising:
the metal interface is configured to be connected with the expansion interface and connected with expansion equipment through the expansion interface;
the electronic switch module is provided with a plurality of filtering channels and is respectively connected between the metal interface and the grounding end of the external transfer card of the server through the plurality of filtering channels;
and the control module is connected with the electronic switch module and is configured to control the connection or disconnection of a plurality of filtering channels of the electronic switch module based on an electromagnetic test result so as to control the grounding mode between the metal interface and the grounding end of the server external interface transfer card.
2. The interface fixture for server electromagnetic compatibility testing of claim 1, wherein the plurality of filter channels of the electronic switch module comprises:
a high pass filtering channel, a low pass filtering channel, and a pass-through channel, wherein no filtering occurs when a signal passes through the pass-through channel.
3. The interface jig for server electromagnetic compatibility testing of claim 1, further comprising:
the electromagnetic induction device is arranged near the metal interface, is connected with the control module and is configured to induce abrupt voltage signals on the metal port so as to judge whether electrostatic interference exists on the metal port;
when the electromagnetic induction device induces abrupt change of the voltage signal on the metal port, an induction signal is generated and sent to the control module.
4. The interface fixture for server electromagnetic compatibility testing of claim 2, wherein the control module is further configured to
Responding to the electromagnetic test result that the high-frequency radiation test fails, and judging whether a conducting channel of the metal interface and the grounding end of the server external transfer card is a high-pass filtering channel or not;
if the electronic switch module is not the high-pass filtering channel, the electronic switch module is controlled to be switched into the high-pass filtering channel; or alternatively
Responding to the electromagnetic test result that the low-frequency radiation test fails, and judging whether a conducting channel of the metal interface and the grounding end of the server external transfer card is a low-pass filtering channel or not;
if the low-pass filter channel is not the low-pass filter channel, the electronic switch module is controlled to be switched into the low-pass filter channel; or alternatively
And receiving a specified channel switching signal from an electromagnetic compatibility test system to switch to a specified conduction channel according to the specified channel switching signal.
5. The interface fixture for server electromagnetic compatibility testing of claim 3, wherein the control module is further configured to
And in response to receiving the induction signal from the electromagnetic induction device, cutting off all conduction channels between the metal interface and the grounding end of the external interface transfer card of the server.
6. A method of electromagnetic compatibility testing, the method comprising:
configuring the interface jig for the electromagnetic compatibility test of the server according to any one of claims 1-6 on the server side, and connecting an electronic switch module in the interface jig to the grounding end of an external transfer card of the server;
the expansion interface is connected through a metal interface in the interface jig, and the expansion equipment is connected through the expansion interface;
performing electromagnetic compatibility test on the server and the expansion equipment, and collecting electromagnetic compatibility test results;
generating a corresponding channel switching instruction according to the non-passing item in the electromagnetic compatibility test result, and issuing the channel switching instruction to a control module in the interface jig;
and responding to the completion feedback of the channel switching instruction returned by the control module in the interface jig, and retesting the failed item.
7. The electromagnetic compatibility test method of claim 6, wherein the failed item in the electromagnetic compatibility test result includes:
high frequency radiation test failed, low frequency radiation test failed, and electrostatic test failed.
8. The method according to claim 7, wherein generating the corresponding channel switching instruction according to the non-passing term in the electromagnetic compatibility test result includes:
responding to the high-frequency radiation test without generating a high-pass filtering channel switching instruction;
the channel switch instruction is not generated by generating a low pass filter in response to the low frequency radiation test.
9. The method of claim 8, wherein retesting the failed item in response to receiving an instruction complete response returned by a control module in the interface fixture comprises:
in response to receiving high-pass filtering channel switching completion feedback returned by a control module in the interface jig, re-executing a high-frequency radiation test; or alternatively
In response to receiving the low-pass filtering channel switching completion feedback returned by the control module in the interface jig, re-executing the low-frequency radiation test;
responding to the passing of the high-frequency radiation test or the low-frequency radiation test, sending a direct channel switching instruction to a control module in the interface jig, and re-executing the high-frequency radiation test or the low-frequency radiation test;
and recording the grounding mode of the corresponding expansion interface capable of passing the high-frequency radiation test and the low-frequency radiation test.
10. A computer device, comprising:
at least one processor; and
memory having stored therein an executable computer program for implementing an electromagnetic compatibility test method according to any of the preceding claims 6-9 when executed by the at least one processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311277679.4A CN117347666A (en) | 2023-09-28 | 2023-09-28 | Interface jig for server electromagnetic compatibility test, test method and computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311277679.4A CN117347666A (en) | 2023-09-28 | 2023-09-28 | Interface jig for server electromagnetic compatibility test, test method and computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117347666A true CN117347666A (en) | 2024-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311277679.4A Pending CN117347666A (en) | 2023-09-28 | 2023-09-28 | Interface jig for server electromagnetic compatibility test, test method and computer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117347666A (en) |
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2023
- 2023-09-28 CN CN202311277679.4A patent/CN117347666A/en active Pending
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