A power-off monitoring device and system for SFP port

Abstract

The application discloses a power-off monitoring device and system for an SFP port, and belongs to the technical field of electronic circuits.The device comprises an SFP port module connected with the SFP port and connected with a port power supply through the SFP port; a main control module connected with the SFP port module and used for regulating and controlling the working mode of the power-off monitoring device; an energy storage module connected with the SFP port module and the main control module and used for storing energy by using the port power supply when the power-off monitoring device is working; and a power supply monitoring module connected with the SFP port and the main control module and used for monitoring power-off by measuring the voltage change on the resistor when the power is off.The application designs a power-off monitoring device for a transmission device, monitors power-off by using the SFP port, provides power through the SFP port, does not need to additionally set a power supply, and obtains the result of whether the device is powered off by using the voltage change of the resistor in the power supply monitoring module, so that the device is simple in design, convenient to operate and easy to install and deploy.

Description

Technical Field

[0001] This application relates to the field of electronic circuit technology, and in particular to a power failure monitoring device and system for SFP ports. Background Technology

[0002] In recent years, with the development of new businesses such as the Internet of Things and cloud computing, data centers have increasingly higher requirements for the stability of network equipment. For business interruptions caused by network failures, users hope to quickly locate and troubleshoot the cause of the network failure. Power outages of network equipment are often a common cause. Therefore, it is particularly important and urgent for business operators to quickly locate whether the business interruption is caused by a power outage of the equipment.

[0003] Although there are many types of power failure alarms on the market, they are generally large in size, often requiring installation and connection to the power supply circuit, making installation and deployment relatively cumbersome. Furthermore, these alarms are not specifically designed for transmission equipment. Additionally, their installation is complex and inconvenient to operate. Summary of the Invention

[0004] To address the problem that existing monitoring devices are bulky, inconvenient to install, and cannot be effectively used for power outage monitoring of transmission equipment, this application proposes a power outage monitoring device and system for SFP ports.

[0005] In a first aspect, this application provides a power failure monitoring device for an SFP port, comprising: an SFP port module connected to the SFP port and connected to a port power supply through the SFP port; a main control module connected to the SFP port module for regulating the operating mode of the power failure monitoring device; an energy storage module connected to both the SFP port module and the main control module for storing electrical energy using the port power supply when the power failure monitoring device is operating; and a power monitoring module connected to both the SFP port and the main control module for power failure monitoring by measuring the voltage change across a resistor when power is lost.

[0006] Optionally, the power monitoring module includes: a first resistor, one end of which is connected to the port power supply; a second resistor, one end of which is connected to the other end of the first resistor, and the other end of the second resistor is grounded; a first potential monitoring unit, one end of which is connected to the other end of the first resistor, for potential monitoring; a third resistor, one end of which is connected to the energy storage module, which provides power to the main control logic power supply when power is off; a fourth resistor, one end of which is connected to the other end of the third resistor, and the other end of the fourth resistor is connected to the ground pin of the SFP port; and a second potential monitoring unit, one end of which is connected to the other end of the third resistor, for potential monitoring, wherein a diode is provided between the port power supply and the main control logic power supply for isolation.

[0007] Optionally, when the SFP port is powered, the first potential monitoring unit is at a high potential and the second potential monitoring unit is at a low potential; when the SFP port is powered off, the first potential monitoring unit is at a low potential, the main control logic power supply is powered by the third and fourth resistors, and the second potential monitoring unit is at a low potential.

[0008] Optionally, when the SFP port is powered on and the power failure monitoring device is unplugged from the SFP port, the second potential monitoring device is at a high potential; when the SFP port is powered on and the power failure monitoring device is plugged into the SFP port, the second potential monitoring device is at a low potential.

[0009] Optionally, the main control module includes a wireless communication module, which transmits the potential information obtained by the first potential monitoring unit and the second potential monitoring unit to the control platform via wireless communication.

[0010] Optionally, the energy storage module includes a supercapacitor, one end of which is connected to the port power supply and the other end of which is grounded. After the power failure monitoring device is inserted into the SFP port, the supercapacitor is charged through the port power supply, and after the port power supply is turned off, the supercapacitor is discharged.

[0011] Secondly, this application provides a power outage monitoring system, characterized in that it includes: a power outage monitoring device for an SFP port, which is inserted into the SFP port to perform power outage monitoring and wirelessly transmit the monitoring results; a control platform that receives the monitoring results and displays them to the staff, wherein the power outage monitoring device includes: an SFP port module connected to the SFP port and connected to a port power supply through the SFP port; a main control module connected to the SFP port module for regulating the working mode of the power outage monitoring device; an energy storage module connected to the SFP port module and the main control module, which stores electrical energy using the port power supply when the power outage monitoring device is working; and a power monitoring module connected to the SFP port and the main control module respectively, which performs power outage monitoring by measuring the voltage change on the resistor when power is lost.

[0012] This application designs a power failure monitoring device for transmission equipment. It uses the SFP port on the device to perform power failure monitoring and provides power through the SFP port. No additional power supply is required. The device obtains the result of whether the device is powered off by the change in the resistor voltage in the power monitoring module. The device design is simple, easy to operate, and easy to install and deploy. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description exemplarily illustrate some embodiments of this application.

[0014] Figure 1A schematic diagram of one embodiment of the power failure monitoring device for SFP ports of this application is shown;

[0015] Figure 2 A circuit diagram of an example of the SFP port module of this application is shown;

[0016] Figure 3 A circuit diagram of an example of the power monitoring module of this application is shown;

[0017] Figure 4 A circuit diagram of an example of the main control module of this application is shown;

[0018] Figure 5 A schematic diagram illustrating an example of the monitoring process of the power failure monitoring device for SFP ports according to this application is shown.

[0019] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0020] The preferred embodiments of this application will now be described in detail with reference to the accompanying drawings, so that the advantages and features of this application can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of this application.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0022] In recent years, with the development of new businesses such as the Internet of Things and cloud computing, data centers have increasingly higher requirements for the stability of network equipment. For business interruptions caused by network failures, users hope to quickly locate and troubleshoot the cause of the network failure. Power outages of network equipment are often a common cause. Therefore, it is particularly important and urgent for business operators to quickly locate whether the business interruption is caused by a power outage of the equipment.

[0023] Although there are many types of power failure alarms on the market, they are generally large in size, often requiring installation and connection to the power supply circuit, making installation and deployment relatively cumbersome. Furthermore, these alarms are not specifically designed for transmission equipment. Additionally, their installation is complex and inconvenient to operate.

[0024] Analysis reveals that, at present, the network transmission between the core equipment in the data center and the transmission room uses fiber optic transmission. These devices are generally equipped with SFP optical ports. Therefore, by monitoring the power supply of the SFP optical ports of the devices, the power supply monitoring of these devices can be indirectly achieved.

[0025] To address the shortcomings and deficiencies of existing alarm products, this application provides a power outage monitoring device specifically designed for monitoring the power supply status of SFP port devices. This device determines the normality of the device's power supply by monitoring whether the SFP port's power supply is normal. When the SFP port loses power, it can report the power outage event to the upper-level platform in real time. The platform then notifies on-duty personnel to troubleshoot the equipment, reducing losses caused by business interruptions.

[0026] The power failure monitoring device for an SFP port disclosed in this application includes: an SFP port module connected to the SFP port and connected to a port power supply via the SFP port; a main control module connected to the SFP port module for regulating the operating mode of the power failure monitoring device; an energy storage module connected to both the SFP port module and the main control module for storing electrical energy using the port power supply when the power failure monitoring device is operating; and a power monitoring module connected to both the SFP port and the main control module for power failure monitoring by measuring the voltage change across a resistor during power failure.

[0027] The power failure monitoring device of this application connects to an SFP port via an SFP port module. The SFP port is connected to a power supply to provide power for the device's operation, and an energy storage module stores the electrical energy. The power monitoring module monitors the potential change of the resistor voltage when the SFP port is powered or de-energized to detect power failures. This power failure monitoring device is simple in design, easy to operate, and convenient to install and deploy due to the use of an SFP port.

[0028] The technical solutions of this application and how they solve the aforementioned technical problems will be described in detail below with specific embodiments. The specific embodiments described below can be combined with each other to form new embodiments. The same or similar ideas or processes described in one embodiment may not be repeated in other embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0029] Figure 1A schematic diagram of one embodiment of the power failure monitoring device for SFP ports according to this application is shown.

[0030] exist Figure 1 In the embodiment shown, the power failure monitoring device for the SFP port of this application includes: an SFP port module 101, which is connected to the SFP port and connected to the port power supply through the SFP port.

[0031] In this embodiment, the power failure monitoring device of this application is directly installed on the SFP port. By monitoring the power supply of the SFP port, the power supply status of the entire transmission equipment can be indirectly obtained. In addition, connecting the power failure monitoring device through the SFP port can provide power to the power failure monitoring device. The SFP port is equivalent to a port power supply, which powers the power failure monitoring device. At the same time, the power failure monitoring device monitors the "power supply status" of this port power supply of the SFP port, thereby obtaining the monitoring results.

[0032] Specifically, Figure 2 A circuit diagram of an example of the SFP port module of this application is shown.

[0033] In this example, the power failure monitoring device of this application is connected to the transmission equipment through the SFP port module via the SFP port, where VCC-3V3 represents the port power provided by the SFP port.

[0034] exist Figure 1 In the embodiment shown, the power failure monitoring device for SFP ports of this application includes: a main control module 102, which is connected to the SFP port module and is used to regulate the working mode of the power failure monitoring device.

[0035] In this embodiment, the main control module is connected to the SFP port module, and uses the port power supply connected to the SFP port module as its operating power source. The main control module regulates the operating mode of the entire power failure monitoring device.

[0036] exist Figure 1 In the embodiment shown, the power failure monitoring device for SFP ports of this application includes an energy storage module 103, which is connected to the SFP port module and the main control module, and stores electrical energy using the port power supply when the power failure monitoring device is working.

[0037] In this embodiment, the energy storage module is connected to the SFP port module and the port power supply. When the SFP port is powered, it stores the energy. After the SFP port is powered off, it acts as the main control logic power supply of the power failure monitoring module to supply power to the corresponding module, so as to enable the normal operation of the corresponding module after the SFP port is powered off.

[0038] Optionally, the energy storage module includes a supercapacitor, one end of which is connected to the port power supply and the other end of which is grounded. After the power failure monitoring device is inserted into the SFP port, the supercapacitor is charged through the port power supply, and after the port power supply is turned off, the supercapacitor is discharged.

[0039] In this optional embodiment, in order to simplify the design of the power failure monitoring device, the energy storage module is mainly composed of supercapacitors. The supercapacitors store energy when the SFP port is powered and discharge when the SFP port is de-powered, thereby achieving power supply.

[0040] exist Figure 1 In the embodiment shown, the power failure monitoring device for the SFP port of this application includes: a power monitoring module 104, which is connected to the SFP port and the main control module respectively, and performs power failure monitoring by measuring the voltage change on the resistor when power is off.

[0041] In this implementation, the power monitoring module uses the difference in resistance potential when the SFP port is powered on and off to monitor whether power is off. The power monitoring module is connected to the main control module, and the monitoring process is controlled by the main control module.

[0042] Optionally, the power monitoring module includes: a first resistor, one end of which is connected to the port power supply; a second resistor, one end of which is connected to the other end of the first resistor, and the other end of the second resistor is grounded; a first potential monitoring unit, one end of which is connected to the other end of the first resistor, for potential monitoring; a third resistor, one end of which is connected to the energy storage module, which provides power to the main control logic power supply when power is off; a fourth resistor, one end of which is connected to the other end of the third resistor, and the other end of the fourth resistor is connected to the ground pin of the SFP port; and a second potential monitoring unit, one end of which is connected to the other end of the third resistor, for potential monitoring, wherein a diode is provided between the port power supply and the main control logic power supply for isolation.

[0043] In this optional embodiment, the power monitoring module includes multiple resistors and two potential monitoring units. The potential monitoring units track changes in the resistor voltage potential to monitor the power failure of the SFP port. The power failure of the monitoring device could be due to a power outage at the SFP port or because the monitoring device has been disconnected from the SFP port. Therefore, to prevent false alarms during power failure monitoring, multiple potential monitoring units are used, and diodes are employed to isolate the main control logic power supply and port power supply of the energy storage module during power failure, achieving voltage potential differences and thus enabling power failure monitoring.

[0044] Specifically, Figure 3 A circuit diagram of an example of the power monitoring module of this application is shown.

[0045] In this example, the port power supply VCC-3V3 connected to the SFP port and the main control logic power supply VCC of the energy storage module, which serves as a power failure monitoring device, are isolated by a diode connection. This ensures that when the SFP port is de-energized, the main control logic power supply VCC is powered by the supercapacitor C12 in the energy storage module, and not by the port power supply VCC_3V3.

[0046] Optionally, when the SFP port is powered, the first potential monitoring unit is at a high potential and the second potential monitoring unit is at a low potential; when the SFP port is powered off, the first potential monitoring unit is at a low potential, the main control logic power supply is powered by the third and fourth resistors, and the second potential monitoring unit is at a low potential. When the SFP port is powered and the power-off monitoring device is removed from the SFP port, the second potential monitoring device is at a high potential; when the SFP port is powered and the power-off monitoring device is inserted into the SFP port, the second potential monitoring device is at a low potential.

[0047] like Figure 3 As shown, the first resistor has one end connected to the port power supply VCC_3V3; the second resistor has one end connected to the other end of the first resistor, and the other end of the second resistor is grounded; the first potential monitoring unit GPIO1 has one end connected to the other end of the first resistor for potential monitoring. The third resistor has one end connected to the main control logic power supply VCC provided by the energy storage module, which powers the energy storage module as the main control logic power supply when power is off; the fourth resistor has one end connected to the other end of the third resistor, and the other end of the fourth resistor is connected to the ground pin of the SFP port; the second potential monitoring unit GPIO0 has one end connected to the other end of the third resistor for potential monitoring.

[0048] The SFP port power supply VCC_3V3 is divided by resistors R1 and R2. Simultaneously, the first potential monitoring unit GPIO1 monitors the voltage at the connection of R1 and R2. When the SFP port is powered, GPIO1 is high; when the SFP port is de-powered, GPIO1 is low. When the SFP port is powered, the main control logic power supply VCC acts as the port power supply. The second potential monitoring unit monitors the voltage at the connection of resistors R3 and R4, and GPIO0 is low. When the SFP port is de-powered, the supercapacitor in the energy storage module acts as the power source. The main control logic power supply VCC is divided by resistors R3 and R4. The other end of resistor R6 is connected to one of the SFP port's ground pins. Simultaneously, the main control module's GPIO0 monitors the voltage at the connection of R1 and R6, and GPIO0 is low.

[0049] When the power failure monitoring device of this invention is inserted into the SFP port of the monitored device, the GPIO0 port is at a low level; when the power failure monitoring device is unplugged, the GPIO0 port is at a high level. The combination of the first and second potential monitoring units enables monitoring of whether the SFP port is powered on or off. Specifically, the voltage at the GPIO0 position of the second potential monitoring unit is pulled up by a third resistor and pulled down by a fourth resistor to achieve potential changes. Specifically, when the power failure monitoring device is unplugged from the SFP optical port of the monitored device, the other end of the fourth resistor is floating, therefore GPIO0 is pulled up to a high level by the third resistor; when inserted into the SFP optical port, the other end of the fourth resistor is grounded, and since the resistance of the fourth resistor is much smaller than that of the third resistor, the voltage monitored by GPIO0 is pulled down to a low level by the fourth resistor.

[0050] This application uses a low-cost resistor voltage divider scheme to identify whether an SFP port device is powered and to determine whether the monitoring device is in place or unplugged. The resistance values ​​of the voltage divider resistors must meet certain conditions: the first resistor must be significantly smaller than the second resistor, and the third resistor must be significantly larger than the fourth resistor. Specifically, the first resistor can be 10K ohms, the second resistor 1M ohms, the third resistor 1M ohms, and the fourth resistor 1K ohms. Additionally, the diode needs a low dropout voltage, and the farad capacitor must have a withstand voltage higher than 3.3V and a relatively high capacitance. It should be noted that the selection of the above resistor and diode models can be based on the appropriate resistance values ​​according to the relationship between the resistor values; this application does not impose specific restrictions on the selection of specific resistors and diodes.

[0051] Optionally, the main control module includes a wireless communication module, which transmits the potential information obtained by the first potential monitoring unit and the second potential monitoring unit to the control platform via wireless communication.

[0052] In this optional embodiment, after obtaining the monitoring result of whether the SFP port is powered off, the monitoring result is sent to the control platform through the wireless communication module set in the main control module, so as to inform the staff and carry out circuit maintenance in a timely manner.

[0053] Specifically, Figure 4 A circuit diagram of an example of the main control module of this application is shown.

[0054] Specifically, Figure 5 A schematic diagram illustrating an example of the monitoring process of the power failure monitoring device for SFP ports according to this application is shown.

[0055] exist Figure 5In the example shown, when using the power failure monitoring device for the SFP port in this application, the power failure monitoring device is inserted into the SFP port of the monitored transmission device. Then, under the control of the main control module, the power failure monitoring device is powered on and listens for an interrupt signal when the potential of the first potential monitoring unit GPIO1 goes low. Upon receiving the interrupt signal that the first potential monitoring unit GPIO1 has gone low, the processing program in the main control unit indicates that a device power failure may have occurred. Then, it checks the potential of the second monitoring unit GPIO0. If GPIO0 is high, the event of the power failure monitoring device being unplugged is uploaded via the wireless communication module in the main control module; if GPIO0 is low, the event of the power failure monitoring device going out is uploaded via the wireless communication module in the main control module. The entire power failure monitoring process is then complete.

[0056] This application discloses a power failure monitoring device for SFP ports, enabling real-time monitoring of the power supply status of communication devices with SFP ports. This helps users quickly pinpoint whether a power failure is the cause of service interruptions, shortening troubleshooting time and reducing losses from service interruptions. The main control module in this application uses an M5311 NB module, eliminating the need for a separate MCU, simplifying implementation, and reducing overall device cost. Utilizing NB wireless communication, no additional wiring or networking is required, simplifying deployment. Furthermore, this invention monitors power supply to the SFP port, eliminating the need for a separate power supply; it is plug-and-play, convenient and quick to use. The power failure monitoring device connects to the SFP port via an SFP port module, utilizing the SFP port's power supply to provide operating power, and storing the energy using an energy storage module. The power monitoring module monitors the SFP port power failure by observing the potential change of the resistor voltage when the SFP port is powered or de-powered, obtaining the monitoring results. This power failure monitoring device is simple in design, easy to operate, and convenient to install and deploy due to the use of the SFP port.

[0057] In another embodiment of this application, the power outage monitoring system includes: a power outage monitoring device for an SFP port, which is inserted into the SFP port to perform power outage monitoring and wirelessly transmit the monitoring results; and a control platform that receives the monitoring results and displays them to staff. The power outage monitoring device includes: an SFP port module connected to the SFP port and connected to an external power source via the SFP port; a main control module connected to the SFP port module for regulating the operating mode of the power outage monitoring device; an energy storage module connected to both the SFP port module and the main control module, which stores electrical energy using an external power source when the power outage monitoring device is operating; and a power monitoring module connected to both the SFP port and the main control module, which performs power outage monitoring by measuring the voltage change across a resistor during a power outage.

[0058] Optionally, the power monitoring module includes: a first resistor, one end of which is connected to the port power supply; a second resistor, one end of which is connected to the other end of the first resistor, and the other end of the second resistor is grounded; a first potential monitoring unit, one end of which is connected to the other end of the first resistor, for potential monitoring; a third resistor, one end of which is connected to the energy storage module, which provides power to the main control logic power supply when power is off; a fourth resistor, one end of which is connected to the other end of the third resistor, and the other end of the fourth resistor is connected to the ground pin of the SFP port; and a second potential monitoring unit, one end of which is connected to the other end of the third resistor, for potential monitoring, wherein a diode is provided between the port power supply and the main control logic power supply for isolation.

[0059] Optionally, when the SFP port is powered, the first potential monitoring unit is at a high potential and the second potential monitoring unit is at a low potential; when the SFP port is powered off, the first potential monitoring unit is at a low potential, the main control logic power supply is powered by the third and fourth resistors, and the second potential monitoring unit is at a low potential.

[0060] Optionally, when the SFP port is powered on and the power failure monitoring device is unplugged from the SFP port, the second potential monitoring device is at a high potential; when the SFP port is powered on and the power failure monitoring device is plugged into the SFP port, the second potential monitoring device is at a low potential.

[0061] Optionally, the main control module includes a wireless communication module, which transmits the potential information obtained by the first potential monitoring unit and the second potential monitoring unit to the control platform via wireless communication.

[0062] Optionally, the energy storage module includes a supercapacitor, one end of which is connected to the port power supply and the other end of which is grounded. After the power failure monitoring device is inserted into the SFP port, the supercapacitor is charged through the port power supply, and after the port power supply is turned off, the supercapacitor is discharged.

[0063] The power outage monitoring system of this application connects to an SFP port via an SFP port module. The SFP port is connected to a power supply to provide power for the power outage monitoring device during operation, and an energy storage module stores the electrical energy. The power monitoring module monitors the potential change of the resistor voltage when the SFP port is energized or de-energized to detect power outages and obtains the results. The power outage monitoring device of this application is simple in design, easy to operate, and convenient to install and deploy due to the use of an SFP port.

[0064] In the embodiments provided in this application, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0065] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0066] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A power failure monitoring device for an SFP port, characterized in that, include: An SFP port module, which connects to an SFP port and connects to the port power supply through the SFP port; The main control module, which is connected to the SFP port module, is used to regulate the working mode of the power failure monitoring device; An energy storage module, which is connected to the SFP port module and the main control module, uses the port power to store electrical energy when the power failure monitoring device is working; A power monitoring module, connected to both the SFP port and the main control module, performs power outage monitoring by measuring voltage changes across a resistor during power failure to determine whether a power outage event has occurred or the power outage monitoring device has been unplugged. The power monitoring module includes: a first resistor, one end of which is connected to the port power supply; a second resistor, one end of which is connected to the other end of the first resistor, with the other end of the second resistor grounded; a first potential monitoring unit, one end of which is connected to the other end of the first resistor for potential monitoring; a third resistor, one end of which is connected to the energy storage module, which acts as the main control logic power supply during power failure; a fourth resistor, one end of which is connected to the other end of the third resistor, with the other end of the fourth resistor connected to the ground pin of the SFP port; and a second potential monitoring unit, one end of which is connected to the other end of the third resistor for potential monitoring. A diode is provided between the port power supply and the main control logic power supply for isolation. The power failure monitoring device is installed on the SFP port via a plug-in connection. When the SFP port is powered, the first potential monitoring unit is at a high potential, and the second potential monitoring unit is at a low potential; When the SFP port is powered off, the first potential monitoring unit is at a low potential, the main control logic power supply supplies power to the third resistor and the fourth resistor, and the second potential monitoring unit is at a low potential. When the SFP port is powered on and the power failure monitoring device is disconnected from the SFP port, the second potential monitoring unit is at a high potential. When the SFP port is powered on and the power failure monitoring device is inserted into the SFP port, the second potential monitoring unit is at a low potential. After obtaining the monitoring results of whether the SFP port is powered off, the monitoring results are sent through the wireless communication module set in the main control module.

2. The power failure monitoring device according to claim 1, characterized in that, The main control module includes: The wireless communication module transmits the potential information acquired by the first potential monitoring unit and the second potential monitoring unit to the control platform via wireless communication.

3. The power failure monitoring device according to claim 1, characterized in that, The energy storage module includes a supercapacitor, one end of which is connected to the port power supply and the other end of which is grounded. After the power failure monitoring device is inserted into the SFP port, the supercapacitor is charged through the port power supply. After the port power supply is turned off, the supercapacitor is discharged.

4. A power outage monitoring system, characterized in that, include: A power failure monitoring device for SFP ports, which is inserted into the SFP port to perform power failure monitoring and wirelessly transmits the monitoring results; A control platform receives the monitoring results and displays them to staff, wherein the power outage monitoring device includes: An SFP port module, which connects to an SFP port and connects to the port power supply through the SFP port; The main control module, which is connected to the SFP port module, is used to regulate the working mode of the power failure monitoring device; An energy storage module, which is connected to the SFP port module and the main control module, uses the port power to store electrical energy when the power failure monitoring device is working; A power monitoring module, connected to both the SFP port and the main control module, performs power outage monitoring by measuring voltage changes across a resistor during power failure to determine whether a power outage event has occurred or the power outage monitoring device has been unplugged. The power monitoring module includes: a first resistor, one end of which is connected to the port power supply; a second resistor, one end of which is connected to the other end of the first resistor, with the other end of the second resistor grounded; a first potential monitoring unit, one end of which is connected to the other end of the first resistor for potential monitoring; a third resistor, one end of which is connected to the energy storage module, which acts as the main control logic power supply during power failure; a fourth resistor, one end of which is connected to the other end of the third resistor, with the other end of the fourth resistor connected to the ground pin of the SFP port; and a second potential monitoring unit, one end of which is connected to the other end of the third resistor for potential monitoring. A diode is provided between the port power supply and the main control logic power supply for isolation. When the SFP port is powered, the first potential monitoring unit is at a high potential, and the second potential monitoring unit is at a low potential; When the SFP port is powered off, the first potential monitoring unit is at a low potential, the main control logic power supply supplies power to the third resistor and the fourth resistor, and the second potential monitoring unit is at a low potential. When the SFP port is powered on and the power failure monitoring device is disconnected from the SFP port, the second potential monitoring unit is at a high potential. When the SFP port is powered on and the power failure monitoring device is inserted into the SFP port, the second potential monitoring unit is at a low potential.

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