CN111858264A - A method, system, device and medium for preventing wrongly pulling out cables - Google Patents

Abstract

The invention discloses a method, system, device and storage medium for preventing wrongly pulling out a cable. The method includes the following steps: judging whether the buckle of the cable plug is normally connected with the buckle of the connector; The connection between the buckle and the connector buckle is abnormal, and a low-level interrupt signal is sent to the PCH; in response to the interrupt signal triggering the interruption of the PCH, the hot-plug of the PCIE link corresponding to the plug is started to disconnect the PCIE link; Whether the PCIE link is down, and in response to the PCIE link being down, unplug the cable. The solution proposed by the present invention establishes a connection between the buckle of the cable plug and the pin of the golden finger, starts the standardized hot-plug of the risk PCIE link when the connection is abnormal, terminates the data transmission of the problem link, and avoids violent hot-plug Unplugging may cause server downtime.

Description

A method, system, device and medium for preventing wrongly pulling out cables

technical field

The present invention relates to the field of servers, and more particularly, to a method, a system, a computer device and a readable medium for preventing a cable from being pulled out incorrectly.

Background technique

GPU servers provide fast, stable and flexible computing services for deep learning, scientific computing, graphics processing and other scenarios, and provide computing power support for the rapid development of artificial intelligence technology and the implementation of solutions; traditional rack-mounted servers can reduce the space occupied , but also limited by space, it is difficult to pack a high-performance CPU and a high-performance GPU at the same time in a limited space, and meet the cooling requirements at the same time. The use of Cable (cable) to connect the CPU server and GPU server externally realizes the function expansion of the traditional RACK (rack) server, which can meet the needs of some specific scenarios and applications; the interconnect bus can use PCIe (Peripheral Component Interconnect express , the high-speed serial computer expansion bus standard).

Select the appropriate PCIe bandwidth according to the actual business needs. To ensure the high-performance transmission of PCIe signals, install a PCIe Repeater adapter card in the expansion port of the CPU server to realize the interface conversion from PCIe connector or OCP connector to MiniSAS connector. The long-distance transmission of the signal provides the relay function; the use of the cable to connect the CPU server and the GPU server externally is a common expansion scheme; since the cable is located outside the chassis, the cable may be pulled out. If the cable is in normal operation of the system Unplugged by mistake, normal business is interrupted, and non-standard hot swap may cause CPU server downtime.

SUMMARY OF THE INVENTION

In view of this, the purpose of the embodiments of the present invention is to provide a method, system, computer device and computer-readable storage medium for preventing wrongly pulling out a cable, by establishing a connection between the buckle of the cable plug and the pin of the gold finger , It can easily detect whether the connection between the buckle of the cable plug and the buckle of the connector is abnormal. When the connection is abnormal, start the standardized hot-plug of the risk PCIE link, terminate the data transmission of the problem link, and avoid violent hot-plug Unplugging may cause server downtime.

Based on the above purpose, one aspect of the embodiments of the present invention provides a method for preventing wrong pull-out of a cable, including the following steps: judging whether the buckle of the cable plug is normally connected to the connector buckle; in response to the The connection between the buckle of the cable plug and the buckle of the connector is not normal, and a low-level interrupt signal is sent to the PCH; in response to the interrupt signal triggering the interruption of the PCH, the thermal circuit of the PCIE link corresponding to the plug is started. plugging to disconnect the PCIE link; and judging whether the PCIE link is disconnected, and pulling out the cable in response to the disconnection of the PCIE link.

In some embodiments, the method further includes: in response to the interruption signal triggering the interruption of the BMC, turning on the sound and light alarm circuit.

In some embodiments, the method further includes: in response to the disconnection of the PCIE link, turning off the sound and light alarm circuit.

In some embodiments, the judging whether the connection between the buckle of the cable plug and the pin of the golden finger of the plug is normal includes: judging whether the interrupt signal corresponding to the pin of the golden finger of the plug generates a rising edge or falling edge.

In another aspect of the embodiments of the present invention, there is also provided a system for preventing erroneous unplugging of cables, including: a first judging module, configured to judge whether the clasp of the cable plug is normally connected to the clasp of the connector; an interrupt module, configured to send a low-level interrupt signal to the PCH in response to an abnormal connection between the clip of the cable plug and the connector clip; an execution module, configured to trigger in response to the interrupt signal The interruption of the PCH starts hot-plugging of the PCIE link corresponding to the plug to disconnect the PCIE link; and a second judging module is configured to judge whether the PCIE link is disconnected, and respond to the The PCIE link is disconnected, and the cable is unplugged.

In some embodiments, it further includes: an alarm module, configured to trigger the interruption of the BMC in response to the interruption signal, and turn on the sound and light alarm circuit.

In some embodiments, the alarm module is further configured to: in response to the disconnection of the PCIE link, turn off the sound and light alarm circuit.

In some embodiments, the first judgment module is further configured to: judge whether the interrupt signal corresponding to the pin of the golden finger of the plug generates a rising edge or a falling edge.

In yet another aspect of the embodiments of the present invention, there is also provided a computer device, comprising: at least one processor; and a memory, where the memory stores computer instructions that can be executed on the processor, and the instructions are executed by the processor. The processor implements the steps of the above method when executed.

In yet another aspect of the embodiments of the present invention, a computer-readable storage medium is also provided, where the computer-readable storage medium stores a computer program that implements the above method steps when executed by a processor.

The invention has the following beneficial technical effects: by establishing the connection between the buckle of the cable plug and the pin of the gold finger, it is easy to sense whether the connection between the buckle of the cable plug and the buckle of the connector is abnormal, and when the connection is abnormal At the same time, start the standardized hot-plug of risky PCIE links, terminate the data transmission of the problem link, and avoid the server downtime that may be caused by violent hot-plug.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other embodiments can also be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of an embodiment of a method for preventing a cable from being pulled out incorrectly according to the present invention;

Fig. 2 is the schematic diagram of CPU server and GPU server interconnection;

3 is a schematic diagram of a connector and a cable plug;

4 is a schematic diagram of a mechanical connectivity detection circuit;

FIG. 5 is a schematic diagram of a hardware structure of an embodiment of a computer device for preventing wrongly pulling out a cable provided by the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention will be further described in detail below with reference to the specific embodiments and the accompanying drawings.

It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two entities with the same name but not the same or non-identical parameters. It can be seen that "first" and "second" It is only for the convenience of expression and should not be construed as a limitation to the embodiments of the present invention, and subsequent embodiments will not describe them one by one.

Based on the above objective, in the first aspect of the embodiments of the present invention, an embodiment of a method for preventing wrongly pulling out a cable is provided. FIG. 1 shows a schematic diagram of an embodiment of a method for preventing wrong cable pulling out provided by the present invention. As shown in Figure 1, the embodiment of the present invention includes the following steps:

S1. Determine whether the connection between the buckle of the cable plug and the buckle of the connector is normal;

S2. In response to the abnormal connection between the buckle of the cable plug and the buckle of the connector, send a low-level interrupt signal to the PCH;

S3. In response to the interruption of the PCH triggered by the interruption signal, the hot-plug of the PCIE link corresponding to the plug is started to disconnect the PCIE link; and

S4. Determine whether the PCIE link is disconnected, and in response to the disconnection of the PCIE link, unplug the cable.

FIG. 2 is a schematic diagram of the interconnection between the CPU server and the GPU server. The PCIe Repeater (relay) board 1 is located on the CPU server (CPU server), the interconnection interface 2 is located on the CPU server and the GPU server (GPU server) respectively, and the sound and light alarm circuit 3 is located on the PCIe Repeater board 1. The CPU server and the GPU server are interconnected through PCIe Cable, and the cables are connected through the interconnection interface 2 on the CPU server end and the GPU server end; the interconnection interface 2 realizes electrical connection for communication on the one hand, and mechanical connection for fixation on the other hand; Cable When the connector is inserted, the electrical connection is completed first, and then the mechanical connection is completed, and the mechanical connection is later than the electrical connection; when the cable is pulled out of the connector, the mechanical connection is disconnected first, and then the electrical connection is disconnected. The mechanical connection is disconnected earlier than the electrical connection. The interrupt signal (interrupt) is generated by the mechanical connection of the interconnection interface 2, and the mechanical connection of the interconnection interface 2 at both ends of the Cable can be generated. The PCIe Repeater board 1 outputs the interrupt signal (interrupt) to the motherboard BMC and PCH, and the sound and light alarm circuit 3 Controlled by the I2C bus of the motherboard BMC.

3 is a schematic diagram of a connector and a cable plug. The connector is composed of a connector body 4 and a connector metal buckle 5, wherein the connector metal buckle 5 is welded on the GND (ground wire) of the PCB through pins; the cable plug is composed of gold fingers 6 and plug metal buckles 7. Composition: When the connector and the cable are normally connected, the gold finger 6 and the connector body 4 are electrically connected, and the plug metal buckle 7 and the connector metal buckle 5 are mechanically connected.

In this embodiment of the present invention, on the premise that the normal connection between the pins of the cable remains unchanged, a pin PIN1 on the gold finger of the cable plug is connected to the metal buckle 7 of the plug through the connecting wire 8; the other end of the cable is connected. The pin PIN2' (not shown in the figure) corresponding to the pin PIN2 on the golden finger is connected with the other end of the clip; when the electrical connection and mechanical connection of the interconnection interface 2 are normal, the pin PIN1, the plug metal clip 7, The connector metal clip 5 is connected to the GND on the PCB, and the pin PIN2' is connected to the GND on the PCB at the other end of the Cable. The cable end is not limited to the connection between the metal clip of the plug and a pin on the gold finger. It can be a button under the metal clip of the plug. One end of the button is connected to a pin on the gold finger, and the other end is connected to GND. Disconnect the buckle to trigger the button. Press to turn on.

On the basis of the above-mentioned device, the following method for preventing the cable from being pulled out by mistake can be implemented:

Determine whether the buckle of the cable plug is properly connected to the buckle of the connector. Before the cable is pulled out, the buckle must be pressed first. At this time, the mechanical connection changes from the on state to the disconnected state. The cable buckle and the connector card can be sensed through the connection between the cable buckle and the gold finger pins. Whether the connection between the buckles is abnormal. Therefore, if you want to monitor whether the cable is pulled out by mistake, you can monitor whether the snap connection of the cable plug and the connector is normal.

In some implementation manners, the judging whether the buckle of the cable plug is normally connected with the buckle of the connector includes: judging whether the interrupt signal corresponding to the pin of the golden finger of the plug has a rising edge or a falling edge. The change of the mechanical connection status of the interfaces at both ends of Calbe will trigger the change of the interrupt signal. The rising edge of pin PIN1 on interconnection interface 2 indicates that the mechanical connection of the interface on the CPU server side is switched from on to off, and the rising edge of pin PIN2 on interconnection interface 2 indicates that the GPU The mechanical connection of the interface on the server side is from on to off; the falling edge of the interrupt signal indicates that there is at least one connector at both ends of the cable and the mechanical connection of the interface is from on to off. Therefore, it can be judged whether the snap connection of the cable plug and the connector snap is normal according to whether the interrupt signal generates a rising edge or a falling edge.

Figure 4 shows a schematic diagram of a mechanical continuity detection circuit. As shown in Figure 4, the mechanical continuity detection circuit is composed of a TVS tube, a pull-up resistor R, and an inverse Schmitt trigger; the TVS is placed close to the connector signal pins for electrostatic protection and pull-up. The resistor R ensures that the signal has a certain level, the inverting Schmitt trigger eliminates signal jitter and increases the driving capability, and the inverting Schmitt trigger outputs are connected together and output to the main board as an interrupt signal. When the mechanical connection is disconnected, the input terminal of the inverting Schmitt trigger is pulled up to VCC by the resistor R, and the interrupt signal at the output terminal is low level; when the mechanical connection is turned on, the input terminal of the inverting Schmitt trigger is connected to GND. On, the output terminal interrupt signal is high level. According to the level of the interrupt signal, the state of the mechanical connection at this time can be judged.

In response to an abnormal connection between the clasp of the plug and the pin of the golden finger of the plug, a low-level interrupt signal is sent to the PCH.

In response to the interruption of the PCH triggered by the interruption signal, hot-plugging of the PCIE link corresponding to the plug is started to disconnect the PCIE link. After the PCH receives the interrupt signal, it can control the interrupt service program to notify the system to start the hot-plug of the problem link.

In some embodiments, the method further includes: in response to the interruption signal triggering the interruption of the BMC, turning on the sound and light alarm circuit. While sending the interrupt signal to the PCH, it can also send the interrupt signal to the BMC. After the BMC receives the interrupt signal, it can control the sound and light alarm circuit to give an alarm.

It is judged whether the PCIE link is disconnected, and in response to the disconnection of the PCIE link, the cable is pulled out. If the PCIE link is disconnected, it means that there is no data transmission at this time, you can unplug the cable. In some embodiments, the method further includes: in response to the disconnection of the PCIE link, turning off the sound and light alarm circuit. If the cable can be unplugged normally, the sound and light alarm circuit can be turned off to stop the alarm.

By detecting the state and change of the mechanical connection between the two ends of the interconnecting cable and the high-speed connector, it can predict that the PCIe interconnection interface between the RACK servers is about to be pulled out. Before the PCIe bus disconnects the electrical connector, the system disconnects the link in time and generates an alarm event. The on-site sound and light alarm can avoid the problem of server downtime caused by human error operation and PCIe violent hot swap, and enhance the stability and reliability of the system.

It should be particularly pointed out that the steps in each embodiment of the above-mentioned method for preventing the wrong cable pulling out can be crossed, replaced, added, and deleted. The proposed method should also belong to the protection scope of the present invention, and the protection scope of the present invention should not be limited to the embodiments.

Based on the above purpose, and in a second aspect of the embodiments of the present invention, a system for preventing incorrect unplugging of cables is provided, including: a first judgment module configured to judge the buckle of the cable plug and the buckle of the connector whether the connection is normal; the interruption module is configured to send a low-level interruption signal to the PCH in response to the abnormal connection between the clip of the cable plug and the connector clip; the execution module is configured to respond to the The interrupt signal triggers the interruption of the PCH, and starts hot-plugging of the PCIE link corresponding to the plug to disconnect the PCIE link; and a second judgment module, configured to judge whether the PCIE link is disconnected, and In response to the PCIE link being disconnected, the cable is unplugged.

In some embodiments, it further includes: an alarm module, configured to trigger the interruption of the BMC in response to the interruption signal, and turn on the sound and light alarm circuit.

In some embodiments, the alarm module is further configured to: in response to the disconnection of the PCIE link, turn off the sound and light alarm circuit.

In some embodiments, the first judgment module is further configured to: judge whether the interrupt signal corresponding to the pin of the golden finger of the plug generates a rising edge or a falling edge.

Based on the above objective, in a third aspect of the embodiments of the present invention, a computer device is provided, including: at least one processor; and a memory, where the memory stores computer instructions that can be executed on the processor, and the instructions are executed by the processor to The following steps are implemented: S1, judging whether the connection between the buckle of the cable plug and the connector buckle is normal; S2, in response to the abnormal connection between the buckle of the cable plug and the connector buckle, to the PCH Sending a low-level interrupt signal; S3, triggering the interruption of the PCH in response to the interrupt signal, and starting the hot-plug of the PCIE link corresponding to the plug to disconnect the PCIE link; and S4, judging whether the PCIE link is disconnected, and responding If the PCIE link is disconnected, unplug the cable.

In some embodiments, the method further includes: in response to the interruption signal triggering the interruption of the BMC, turning on the sound and light alarm circuit.

In some embodiments, the method further includes: in response to the disconnection of the PCIE link, turning off the sound and light alarm circuit.

In some implementation manners, the judging whether the buckle of the cable plug is normally connected with the buckle of the connector includes: judging whether the interrupt signal corresponding to the pin of the golden finger of the plug has a rising edge or a falling edge.

As shown in FIG. 2 , it is a schematic diagram of the hardware structure of an embodiment of the above-mentioned computer device for preventing the wrong cable unplugging provided by the present invention.

Taking the device shown in FIG. 2 as an example, the device includes a processor 301 and a memory 302 , and may further include an input device 303 and an output device 304 .

The processor 301 , the memory 302 , the input device 303 and the output device 304 may be connected by a bus or in other ways, and the connection by a bus is taken as an example in FIG. 2 .

As a non-volatile computer-readable storage medium, the memory 302 can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as the protection against wrongly unplugging the cable in the embodiment of the present application. The program instruction/module corresponding to the method. The processor 301 executes various functional applications and data processing of the server by running the non-volatile software programs, instructions and modules stored in the memory 302 , that is, implementing the method for preventing wrong cable unplugging in the above method embodiments.

The memory 302 may include a stored program area and a stored data area, wherein the stored program area may store an operating system, an application program required for at least one function; data etc. Additionally, memory 302 may include high speed random access memory, and may also include nonvolatile memory, such as at least one magnetic disk storage device, flash memory device, or other nonvolatile solid state storage device. In some embodiments, memory 302 may optionally include memory located remotely from processor 301, which may be connected to local modules via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

The input device 303 can receive input information such as user name and password. The output device 304 may include a display device such as a display screen.

The program instructions/modules corresponding to one or more methods for preventing erroneous unplugging of cables are stored in the memory 302, and when executed by the processor 301, the methods for preventing erroneously unplugging of cables in any of the foregoing method embodiments are executed.

Any one of the embodiments of the computer device that executes the above-mentioned method for preventing a cable from being pulled out incorrectly can achieve the same or similar effects as any of the preceding method embodiments corresponding to it.

The present invention also provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program that executes the above method when executed by a processor.

Finally, it should be noted that those of ordinary skill in the art can understand that all or part of the process in the method of the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. In the computer-readable storage medium, when the program is executed, it may include the processes of the foregoing method embodiments. Wherein, the storage medium of the program may be a magnetic disk, an optical disk, a read only memory (ROM) or a random access memory (RAM) or the like. The above computer program embodiments can achieve the same or similar effects as any of the foregoing method embodiments corresponding thereto.

In addition, the methods disclosed according to the embodiments of the present invention may also be implemented as a computer program executed by a processor, and the computer program may be stored in a computer-readable storage medium. When the computer program is executed by the processor, the above-mentioned functions defined in the methods disclosed in the embodiments of the present invention are executed.

In addition, the above-mentioned method steps and system units can also be implemented by using a controller and a computer-readable storage medium for storing a computer program that enables the controller to implement the functions of the above-mentioned steps or units.

In addition, it should be understood that computer-readable storage media (eg, memory) herein can be volatile memory or non-volatile memory, or can include both volatile and non-volatile memory. By way of example and not limitation, nonvolatile memory may include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory memory. Volatile memory may include random access memory (RAM), which may act as external cache memory. By way of example and not limitation, RAM is available in various forms such as synchronous RAM (DRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The storage devices of the disclosed aspects are intended to include, but not be limited to, these and other suitable types of memory.

Those skilled in the art will also appreciate that the various exemplary logical blocks, modules, circuits, and algorithm steps described in connection with the disclosure herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described generally in terms of their functionality. Whether such functionality is implemented as software or hardware depends on the specific application and design constraints imposed on the overall system. Those skilled in the art may implement the functions in various ways for each specific application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments of the present invention.

The various exemplary logical blocks, modules, and circuits described in connection with the disclosure herein can be implemented or executed using the following components designed to perform the functions herein: general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination of these components. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in combination with a DSP, and/or any other such configuration.

The steps of a method or algorithm described in connection with the disclosures herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor, such that the processor can read information from, and write information to, the storage medium. In an alternative, the storage medium may be integrated with the processor. The processor and storage medium may reside in an ASIC. The ASIC may reside in the user terminal. In an alternative, the processor and storage medium may reside in the user terminal as discrete components.

In one or more exemplary designs, functions may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage medium can be any available medium that can be accessed by a general purpose or special purpose computer. By way of example and not limitation, the computer-readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage devices, magnetic disk storage devices or other magnetic storage devices, or may be used to carry or store instructions in the form of or data structures and any other medium that can be accessed by a general purpose or special purpose computer or a general purpose or special purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave are used to send software from a website, server, or other remote source, the above coaxial cable Cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwave are all included in the definition of medium. As used herein, magnetic disks and optical disks include compact disks (CDs), laser disks, optical disks, digital versatile disks (DVDs), floppy disks, blu-ray disks, where disks usually reproduce data magnetically, while optical disks reproduce data optically with lasers . Combinations of the above should also be included within the scope of computer-readable media.

The above are exemplary embodiments of the present disclosure, but it should be noted that various changes and modifications may be made without departing from the scope of the disclosure of the embodiments of the present invention as defined in the 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 disclosed in the embodiments of the present invention may be described or claimed in the singular, unless explicitly limited to the singular, the plural may also be construed.

It should be understood that, as used herein, the singular form "a" is intended to include the plural form as well, unless the context clearly supports an exception. It will 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 above-mentioned embodiments of the present invention disclose the serial numbers of the embodiments only for description, and do not represent the advantages and disadvantages of the embodiments.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above embodiments can be completed by hardware, or can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. The storage medium can be a read-only memory, a magnetic disk or an optical disk, and the like.

Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is only exemplary, and is not intended to imply that the scope (including the claims) disclosed by the embodiments of the present invention is limited to these examples; under the idea of the embodiments of the present invention , the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the above embodiments of the present invention, which are not provided in detail for the sake of brevity. Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present invention should be included within the protection scope of the embodiments of the present invention.

Claims (10)

1. A method for preventing a cable from being pulled out by mistake, comprising the following steps: Determine whether the connection between the buckle of the cable plug and the buckle of the connector is normal; In response to the abnormal connection between the clasp of the cable plug and the clasp of the connector, sending a low-level interrupt signal to the PCH; In response to the interruption of the PCH triggered by the interruption signal, hot-plugging of the PCIE link corresponding to the plug is started to disconnect the PCIE link; and It is judged whether the PCIE link is disconnected, and in response to the disconnection of the PCIE link, the cable is pulled out. 2. The method of claim 1, further comprising: In response to the interruption of the BMC triggered by the interruption signal, the sound and light alarm circuit is turned on. 3. The method of claim 2, further comprising: In response to the PCIE link being disconnected, the audible and visual alarm circuit is turned off. 4. The method according to claim 1, wherein the judging whether the buckle of the cable plug is normally connected with the buckle of the connector comprises: It is judged whether the interrupt signal corresponding to the pin of the gold finger of the plug has a rising edge or a falling edge. 5. A system for preventing erroneous unplugging of cables, comprising: a first judging module, configured to judge whether the clasp of the cable plug is normally connected with the clasp of the connector; an interruption module, configured to send a low-level interruption signal to the PCH in response to an abnormal connection between the buckle of the cable plug and the buckle of the connector; an execution module, configured to trigger an interruption of the PCH in response to the interruption signal, and initiate hot-plugging of the PCIE link corresponding to the plug to disconnect the PCIE link; and The second judgment module is configured to judge whether the PCIE link is disconnected, and in response to the disconnection of the PCIE link, unplug the cable. 6. The system of claim 5, further comprising: The alarm module is configured to trigger the interruption of the BMC in response to the interruption signal, and turn on the sound and light alarm circuit. 7. The method according to claim 6, wherein the alarm module is further configured to: In response to the PCIE link being disconnected, the audible and visual alarm circuit is turned off. 8. The system according to claim 5, wherein the first judgment module is further configured to: It is judged whether the interrupt signal corresponding to the pin of the gold finger of the plug has a rising edge or a falling edge. 9. A computer equipment, characterized in that, comprising: at least one processor; and a memory storing computer instructions executable on the processor, the instructions implementing the steps of the method of any one of claims 1-4 when executed by the processor. 10. A computer-readable storage medium storing a computer program, wherein when the computer program is executed by a processor, the steps of the method of any one of claims 1-4 are implemented.

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