Multifunctional interface, power equipment and integrated cable

Abstract

The invention belongs to the technical field of power electronics, and provides a multifunctional interface, power equipment and an integrated cable, and the multifunctional interface comprises a communication interface, a network port branch connected with a first part of pins forming a network port in the communication interface, and a serial port branch connected with a second part of pins forming a serial port in the communication interface. And the first part of pins and the second part of pins in the communication interface are isolated from each other. By arranging the communication interface, physical isolation can be carried out on pins of communication network port signals and pins of serial port signals, the capability of resisting crosstalk caused by different levels between the two signals is improved, and application to a strong electromagnetic interference environment is facilitated; and after the anti-interference capability of the communication interface is improved, the problem of equipment damage caused by low anti-interference capability of the communication interface and equipment connected with the communication interface is solved.

Description

Technical Field

[0001] This application belongs to the field of power electronics technology, and in particular relates to a multi-functional interface, a power device, and an integrated cable. Background Art

[0002] There are electromagnetic interferences such as magnetic fields, radiation, and electrostatic fields in the main application scenarios of power devices. Under these environmental interferences, network port signals, serial port signals, and integrated cables that can connect these two interfaces simultaneously are extremely vulnerable to interference, making it impossible to perform device management and debugging, and lacking protection functions for the transceiver ports of the connected devices. Summary of the Invention

[0003] In view of the above problems, this application provides a multi-functional interface, a power device, and an integrated cable, aiming to solve the problem of poor anti-interference ability of conventional multi-functional interfaces and cables.

[0004] In a first aspect, an embodiment of this application provides a multi-functional interface, including a communication interface. The multi-functional interface further includes:

[0005] A network port branch, connected to the first part of the pins that form the network port in the communication interface;

[0006] A serial port branch, connected to the second part of the pins that form the serial port in the communication interface. The first part of the pins and the second part of the pins in the communication interface are physically isolated from each other.

[0007] In the technical solution of the embodiment of this application, the multi-functional interface physically isolates the pins for communicating network port signals and the pins for serial port signals in the communication interface, improving the ability to resist crosstalk caused by different levels between the two signals, which is beneficial for application in a strong electromagnetic interference environment; after the anti-interference ability of the communication interface is improved, it also improves the problem of device damage caused by the low anti-interference ability of the communication interface in the device where the communication interface is located and the connected devices.

[0008] In some embodiments, a first anti-interference module is provided on the network port branch, and the first anti-interference module is used to filter out interference signals on the network port branch.

[0009] In the technical solution of the embodiment of this application, the multi-functional interface sets an anti-interference module for the network port branch that transmits network port signals, improving the anti-interference ability of the signals transmitted by the network port branch and protecting the network port branch, which is beneficial for application in a strong electromagnetic interference environment.

[0010] In some embodiments, a second anti-interference module is provided on the serial port branch, and the second anti-interference module is used to filter out interference signals on the serial port branch.

[0011] In the technical solution of the embodiment of the present application, an anti-interference module is provided for the serial port branch that transmits serial port signals, which improves the anti-interference ability of the signals transmitted by the serial port branch and plays a protective role for the serial port branch, facilitating its application in a strong electromagnetic interference environment.

[0012] In some embodiments, the first anti-interference module includes an electrostatic discharge circuit, and the electrostatic discharge circuit is connected to each signal transmission line of the network port branch for discharging the static electricity of each signal transmission line.

[0013] In the technical solution of the embodiment of the present application, a function of preventing electrostatic discharge is provided for the network port branch, which improves the anti-static ability of the network port and also prevents the serial port branch from being crosstalked by different levels.

[0014] In some embodiments, the network port branch further includes a network transformer. The differential signal pair pins on the first side of the network transformer are connected to the first part of the pins of the communication interface, and the differential signal pair pins on the second side of the network transformer form the signal transmission line for connecting to an external circuit.

[0015] In the technical solution of the embodiment of the present application, an embodiment of the network port branch is provided, and network signals are transmitted through coupling between the network transformer and the communication interface.

[0016] In some embodiments, the terminal for grounding of the network port branch is connected to the grounding end of the external circuit.

[0017] In the technical solution of the embodiment of the present application, the terminal for grounding of the network port branch is configured to be connected to the ground end of the external circuit, so as to release the interference signal including static electricity into the external circuit, avoiding the interference signal from interfering with the serial port branch and being transmitted to other devices through the communication interface.

[0018] In some embodiments, the electrostatic discharge circuit includes a plurality of transient voltage suppression diodes, and each signal transmission line is grounded through one of the transient voltage suppression diodes.

[0019] In the technical solution of the embodiment of the present application, an embodiment of the electrostatic discharge circuit is provided. The transient voltage suppression diode is used to suppress instantaneous overvoltage. When a surge pulse voltage appears instantaneously in the network port branch, the surge pulse voltage is shunted and clamped, thereby protecting the components in the network port branch and the external circuit from being damaged by the instantaneous surge pulse voltage, and at the same time avoiding the surge pulse voltage from interfering with the serial port branch.

[0020] In some embodiments, the differential signal pair pins on the first side of the network transformer include a transmit positive signal pin, a transmit negative signal pin, a receive positive signal pin, and a receive negative signal pin;

[0021] The communication interface includes an RJ45 interface. The first part of the pins of the communication interface includes:

[0022] Pin 1, connected to the positive transmission signal pin;

[0023] Pin 2, connected to the negative transmission signal pin;

[0024] Pin 3, connected to the positive receiving signal pin; and

[0025] Pin 4, connected to the negative receiving signal pin.

[0026] In the technical solution of the embodiment of the present application, an embodiment of a communication interface is provided. At the same time, the pins used by the network interface are configured on one side of the communication interface, physically isolating the network interface signal from the serial port signal to prevent crosstalk of different levels between the two signals.

[0027] In some embodiments, the differential signal pair pins on the second side of the network transformer include a positive transmission signal pin, a negative transmission signal pin, a positive receiving signal pin, and a negative receiving signal pin.

[0028] In the technical solution of the embodiment of the present application, the signal transmission line of the network interface branch is configured.

[0029] In some embodiments, it further includes a first power supply circuit. The input end of the first power supply circuit is used to connect to a first power source, and the output end of the first power supply circuit is connected to the center tap pin of the network transformer. The first power supply circuit is used to provide a first power supply voltage to the center tap pin of the network transformer.

[0030] In the technical solution of the embodiment of the present application, the network interface branch is powered separately, so that the power supply of the network interface branch is isolated from that of the serial port branch, enhancing the anti-interference ability and the signal isolation between the network interface signal and the serial port signal. Optionally, when the first power source also comes from the same external circuit where the network interface branch is grounded, the power supply and the ground are in the same loop, ensuring the stability of the transmission signal of the multi-functional interface.

[0031] In some embodiments, the first power supply circuit includes a first wire and a filtering element. The filtering element is arranged on the first wire. The input end of the first wire is used to connect to the first power source, and the output end of the first wire is connected to the center tap pin of the network transformer.

[0032] In the technical solution of the embodiment of the present application, a filtering software is arranged on the first power supply circuit to reduce the interference of the power supply to the network interface branch.

[0033] In some embodiments, the filtering element includes a magnetic bead, and the magnetic bead is sleeved on the first wire.

[0034] In the technical solution of the embodiment of the present application, the magnetic beads are low in cost and convenient to install.

[0035] In some embodiments, the second anti-interference module includes an isolation transmission circuit, the isolation transmission circuit is connected in series on the serial port branch, and the isolation transmission circuit is used to reduce the interference signal of the ground loop.

[0036] In the technical solution of the embodiment of the present application, an isolation transmission circuit is arranged on the serial port branch to electrically isolate the communication interface (and the devices connected thereto) from the external circuit, reduce the interference signal of the ground loop, and enhance the signal isolation ability during serial port signal communication.

[0037] In some embodiments, the serial port branch further includes a serial port transceiver, the transceiver signal pin on the first side of the serial port transceiver is connected to the second part of the pins of the communication interface, the transceiver signal pin on the second side of the serial port transceiver is connected to the first side of the isolation transmission circuit, and the second side of the isolation transmission circuit is used to connect to the external circuit.

[0038] In the technical solution of the embodiment of the present application, an embodiment of the serial port branch is provided. The first side of the serial port transceiver is connected to the communication interface to transmit the serial port signal, and the second side of the serial port transceiver is connected to the external circuit through the isolation transmission circuit to transmit the serial port signal.

[0039] In some embodiments, the isolation transmission circuit includes a digital isolator, the transceiver signal pin on the first side of the digital isolator is connected to the transceiver signal pin on the second side of the network transformer, and the transceiver signal pin on the second side of the digital isolator is used to connect to the external circuit.

[0040] In the technical solution of the embodiment of the present application, an embodiment of the isolation transmission circuit is provided. The digital isolator reduces the noise of the ground loop, and the current isolation enables the serial port signal transmission not to pass through the electrical connection or leakage path, thereby avoiding safety risks.

[0041] In some embodiments, the signal ground pins on the first side and the second side of the serial port transceiver and the signal ground pin on the first side of the digital isolator are electrically connected to the signal ground pin of the communication interface, and the signal ground pin on the second side of the digital isolator is connected to the ground end of the external circuit.

[0042] In the technical solution of the embodiment of the present application, the circuit of the digital isolator of the serial port branch to the communication interface side is grounded in a different way from the network port branch, so that the serial port branch and the network port branch are grounded isolated, thereby enhancing the ability to resist common-mode crosstalk.

[0043] In some embodiments, the transceiver signal pins on the first side of the serial transceiver include: a first transmit signal pin and a first receive signal pin;

[0044] The communication interface includes an RJ45 interface, and the second part of the pins of the communication interface includes:

[0045] Pin 7, connected to the first transmit signal pin; and

[0046] Pin 8, connected to the first receive signal pin.

[0047] In the technical solution of the embodiment of the present application, an embodiment of a communication interface is provided. At the same time, the pins used by the serial port are configured on one side of the communication interface to physically isolate the network port signal and the serial port signal, preventing crosstalk of different levels between the two signals.

[0048] In some embodiments, the transceiver signal pins on the second side of the serial transceiver include: a second transmit signal pin and a second receive signal pin;

[0049] The transceiver signal pins on the first side of the digital isolator include:

[0050] A third transmit signal pin, connected to the second receive signal pin; and

[0051] A third receive signal pin, connected to the second transmit signal pin.

[0052] In the technical solution of the embodiment of the present application, the signal transmission line of the serial port branch is configured.

[0053] In some embodiments, the transceiver signal pins on the second side of the digital isolator include:

[0054] A fourth transmit signal pin, used to send a universal asynchronous transmission signal to the external circuit; and

[0055] A fourth receive signal pin, used to receive the universal asynchronous transmission signal of the external circuit.

[0056] In the technical solution of the embodiment of the present application, the signal transmission line of the serial port branch is configured.

[0057] In some embodiments, it further includes:

[0058] A second power supply circuit, the input end is used to connect to a second power supply, the output end of the second power supply circuit is connected to the power supply pin, the fourth transmit signal pin and the fourth receive signal pin on the second side of the digital isolator, and the second power supply circuit is used to provide a second power supply voltage for the power supply pin, the fourth transmit signal pin and the fourth receive signal pin on the second side of the digital isolator;

[0059] A third power supply circuit, the input end of which is used to connect to a third power source, and the output end of the third power supply circuit is connected to the power supply pin on the first side of the digital isolator and the power supply pin of the serial port transceiver. The third power supply circuit is used to provide a third power supply voltage for the power supply pin on the first side of the digital isolator and the power supply pin of the serial port transceiver.

[0060] In the technical solution of the embodiment of the present application, by configuring separate power supplies for the serial port branch and the network port branch, the power supplies of the network port branch and the serial port branch are isolated, enhancing the anti-interference ability and the signal isolation between the network port signal and the serial port signal. Optionally, when the second power supply also comes from the same external circuit grounded on the second side of the digital isolator, the power supply and the ground are in the same loop, ensuring the stability of the transmitted signal of the multifunctional interface.

[0061] In some embodiments, the second power supply circuit includes a second wire, and the first end and the second end of the second wire respectively form the input end and the output end of the second power supply circuit.

[0062] In the technical solution of the embodiment of the present application, an embodiment of a second power supply circuit is provided, which is simple, reliable, and low in cost.

[0063] In some embodiments, the third power supply circuit includes an isolation transformer. The power supply pin of the isolation transformer is used to connect to the third power source, the grounding pin of the isolation transformer is connected to the grounding end of the external circuit, the positive output of the isolation transformer outputs the third power supply voltage, and the negative output of the isolation transformer is electrically connected to the signal ground pin of the communication interface.

[0064] In the technical solution of the embodiment of the present application, an embodiment of a third power supply circuit is provided. At the same time, the input side and the output end of the isolation transformer are respectively connected to different grounds, so that the external circuit providing the third power source and the ground of the serial port branch are different, improving the anti-interference ability of the serial port branch.

[0065] In a second aspect, the embodiment of the present application further provides a power device, on which the above-mentioned multifunctional interface is provided.

[0066] In the technical solution of the embodiment of the present application, the device using the above-mentioned multifunctional interface, the network port of the device connected through the multifunctional interface, and the serial port play a protective role, preventing the overall damage of the board card provided with the network port or the serial port due to the damage of the network port or the serial port, improving the reliability of signal transmission between devices and the reliability of the device itself.

[0067] In a third aspect, an embodiment of the present application further provides an integrated cable applicable to the above-mentioned multifunctional interface, including a first communication interface, a second communication interface, and a third communication interface. The first part of the pins of the first communication interface is connected to the positive transmission signal pin, negative transmission signal pin, positive reception signal pin, and negative reception signal pin of the second communication interface. The second part of the pins of the first communication interface is connected to the signal ground pin, transmission signal pin, and reception signal pin of the third communication interface; the first part of the pins and the second part of the pins of the first communication interface are physically isolated from each other.

[0068] In the technical solution of the embodiment of the present application, the integrated cable can transmit serial port signals and network signals simultaneously, reducing the number of cables and the size of the device panel during device debugging. At the same time, the first part of the pins and the second part of the pins on the first communication interface that communicate with the second communication interface and the third communication interface respectively are physically isolated, preventing crosstalk of different levels between the two signals, enhancing the signal isolation ability, avoiding damage to the communication interface and reducing the signal transmission error rate, enabling it to be applied in a strong electromagnetic interference environment, and protecting the network ports and serial ports of the devices connected by the integrated cable.

[0069] In some embodiments, the first communication interface includes an RJ45 interface, the second communication interface includes an RJ45 interface, and the first part of the pins of the first communication interface includes:

[0070] Pin 1, connected to Pin 1 of the second communication interface as the positive transmission signal pin;

[0071] Pin 2, connected to Pin 2 of the second communication interface as the negative transmission signal pin;

[0072] Pin 3, connected to Pin 3 of the second communication interface as the positive reception signal pin; and Pin 4, connected to Pin 6 of the second communication interface as the negative reception signal pin.

[0073] In the technical solution of the embodiment of the present application, an integrated cable applicable to RJ45 interfaces at both ends is provided. The first communication interface selects the first part of the pins configured as network ports on one side to avoid crossing with the second part of the pins, thereby forming physical isolation; the pins forming the network port of the second communication interface are selected with the generally common pin numbers on the market, so that the second communication interface can be adapted to most devices with network ports on the market.

[0074] In some embodiments, the first communication interface includes an RJ45 interface, the third communication interface includes a DB9 interface, and the second part of the pins of the first communication interface includes:

[0075] The 6th pin is connected to the 5th pin of the third communication interface which serves as the signal ground pin;

[0076] The 7th pin is connected to the 3rd pin of the third communication interface which serves as the first transmission signal pin; and the 8th pin is connected to the 2nd pin of the third communication interface which serves as the first reception signal pin.

[0077] In the technical solution of the embodiment of the present application, an integrated cable is provided, one end of which is applicable to the RJ45 interface and the other end is applicable to the BD9 interface. The first communication interface selects the second part of the pins configured as the serial port on one side to avoid crossing with the first part of the pins, thereby forming physical isolation; the pins forming the serial port of the second communication interface are selected with the generally common pin numbers in the market, so that the second communication interface can be adapted to most devices with serial ports in the market.

[0078] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically exemplified below. BRIEF DESCRIPTION OF THE DRAWINGS

[0079] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0080] Figure 1 Shows a schematic structural diagram of a multi-functional interface provided by an embodiment of the present application;

[0081] Figure 2 Shows a schematic structural diagram of a multi-functional interface provided by an embodiment of the present application;

[0082] Figure 3 Shows a schematic structural diagram of a multi-functional interface provided by an embodiment of the present application;

[0083] Figure 4 Shows a schematic structural diagram of a multi-functional interface provided by an embodiment of the present application;

[0084] Figure 5 Shows a schematic circuit diagram of a multi-functional interface provided by an embodiment of the present application;

[0085] Figure 6 Shows a schematic module diagram of the first power supply circuit in a multi-functional interface provided by an embodiment of the present application;

[0086] Figure 7 The schematic diagram of modules of the second and third power supply circuits in the multifunctional interface provided by an embodiment of the present application is shown;

[0087] Figure 8 The circuit schematic diagram of the third power supply circuit in the multifunctional interface provided by an embodiment of the present application is shown;

[0088] Figure 9 The circuit schematic diagram of the integrated cable provided by an embodiment of the present application is shown. Detailed implementation manners

[0089] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, and thus are only examples and cannot be used to limit the protection scope of the present application.

[0090] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0091] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is more than two, unless otherwise specifically defined.

[0092] Referring to "embodiments" herein means that specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0093] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0094] In the description of the embodiments of the present application, the term "multiple" means two or more (including two). Similarly, "multiple groups" means two or more groups (including two groups), and "multiple pieces" means two or more pieces (including two pieces).

[0095] In the description of the embodiments of the present application, unless otherwise clearly defined and limited, technical terms such as "installation", "connection", "connection", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0096] In the application of power devices (such as secondary power control and protection devices), most devices include two connection methods: network interface and serial port. Usually, the network interface is used to manage the device, and the serial port is used for debugging and parameter configuration. These two interfaces are usually used in various stages such as the research, development, testing, commissioning, factory configuration, and actual use of the device. Currently, some pins of the network interface are connected to the pins of the serial port, realizing the simultaneous extraction of network interface signals and serial port signals through a network interface and an integrated cable, reducing the panel area of the device.

[0097] However, in the main application scenarios of power devices, there are electromagnetic interferences such as magnetic fields, radiation, and electrostatic fields. Under these environmental interferences, network interface signals, serial port signals, and integrated cables that can connect these two interfaces at the same time are extremely vulnerable to interference, making it impossible to manage and debug the device, and lacking the protection function for the transceiver ports of the connected devices.

[0098] Therefore, in view of the problem of poor anti-interference ability of conventional multi-functional interfaces and cables, the present application proposes a multi-functional interface.

[0099] According to some embodiments of the present application, referring to Figure 1 , Figure 1 FIG. shows a schematic structural diagram of a multi-functional interface provided by an embodiment of the present application. For the convenience of description, only the parts related to this embodiment are shown and are described in detail as follows:

[0100] The multi-functional interface includes a communication interface 100, a network interface branch 210, and a serial port branch 220. The network interface branch 210 is connected to the first part of pins 101 that form the network interface in the communication interface 100; the serial port branch 220 is connected to the second part of pins 102 that form the serial port in the communication interface 100, and the first part of pins 101 and the second part of pins 102 in the communication interface 100 are physically isolated from each other.

[0101] Among them, the communication interface 100 is, for example, an Ethernet interface, a serial port interface, a type-C interface, a General-Purpose Interface Bus (GPIB) interface, etc. The fact that the first part of pins 101 and the second part of pins 102 of the communication interface 100 are isolated from each other means that: in the hardware of the communication interface 100, none of the one or more pins in the first part of pins 101 fall between any two adjacent pins in the second part of pins 102, and none of the one or more pins in the second part of pins 102 fall between any two adjacent pins in the first part of pins 101. Exemplarily, the first part of pins 101 includes pins 1, 2, 3, and 4, and the second part of pins 102 includes pins 7 and 8.

[0102] The first part of pins 101 in the communication interface 100 includes 4 pins, and the formed network port can be a 10M / 100M network port. The serial port formed by the second part of pins 102 in the communication interface 100 includes 2 pins, and can be a Transistor Transistor Logic (TTL) serial port, an RS-232 serial port, or an RS-485 serial port. One end of the network port branch 210 and the serial port branch 220 is connected to the communication interface 100, and the other end is connected to other circuits (external circuits relative to the multifunctional interface) of the device where the communication interface 100 is located to transmit signals. The communication interface 100 is, for example, an RJ45 socket for connecting to an external device to transmit signals.

[0103] In the technical solution of the embodiment of the present application, the communication interface 100 is configured as a communication interface 100 and a serial port interface, reducing the number of cables and the size of the device panel during application. In addition, the pins of the communication network port signal and the pins of the serial port signal are physically isolated, improving the ability to resist crosstalk caused by different levels between the two signals, which is beneficial for application in a strong electromagnetic interference environment. After the anti-interference ability of the communication interface 100 is improved, it also improves the problem of device damage caused by the low anti-interference ability of the communication interface 100 in the device where the communication interface 100 is located and the connected devices.

[0104] According to some embodiments of the present application, referring to Figure 2 , Figure 2 shows a schematic structural diagram of a multifunctional interface provided by an embodiment of the present application. For the sake of convenience of description, only the parts related to this embodiment are shown and are described in detail as follows:

[0105] The communication interface 100 can also configure at least one pin between the first part of pins 101 and the second part of pins 102 as a signal ground pin, thereby improving the signal and physical isolation between the first part of pins 101 and the second part of pins 102, which is beneficial to improving the ability to resist crosstalk caused by different levels between two signals and is beneficial to be applied in a strong electromagnetic interference environment. In one example, for instance, the communication interface 100 is an RJ45 interface, the first part of pins 101 includes pins 1, 2, 3, and 4, the second part of pins 102 includes pins 7 and 8, and pin 5 or 6 is set as the signal ground pin.

[0106] According to some embodiments of the present application, with reference to Figure 3 , Figure 3 FIG. shows a schematic structural diagram of a multifunctional interface provided by an embodiment of the present application. For the sake of convenience of description, only the parts related to this embodiment are shown and are described in detail as follows:

[0107] A first anti-interference module 211 is provided on the network port branch 210, and the first anti-interference module 211 is used to filter out the interference signals of the network port branch 210.

[0108] The first anti-interference module 211 is, for example, a surge protection circuit, an electromagnetic interference protection circuit, or a common ground crosstalk protection circuit, etc. In the technical solution of the embodiment of the present application, the multifunctional interface sets an anti-interference module for the network port branch 210 that transmits network port signals, improves the anti-interference ability of the network port branch 210, and plays a protective role for the network port branch 210, which is beneficial to be applied in a strong electromagnetic interference environment. Further, it can also solve the problem of device damage caused by the poor anti-interference ability of the communication interface 100 to the devices where the communication interface 100 is located and connected.

[0109] According to some embodiments of the present application, please continue to refer to Figure 3 , a second anti-interference module 221 is provided on the serial port branch 220, and the second anti-interference module 221 is used to filter out the interference signals of the serial port branch 220.

[0110] The second anti-interference module 221 is, for example, a surge protection circuit, an electromagnetic interference protection circuit, or a common ground crosstalk protection circuit, etc. In the technical solution of the embodiment of the present application, in the technical solution of the embodiment of the present application, the multifunctional interface sets an anti-interference module for the serial port branch 220 that transmits serial port signals, improves the anti-interference ability of the serial port branch 220, and plays a protective role for the serial port branch 220, which is beneficial to be applied in a strong electromagnetic interference environment. Further, it can also solve the problem of device damage caused by the poor anti-interference ability of the communication interface 100 to the devices where the communication interface 100 is located and connected.

[0111] According to some embodiments of the present application, with reference to Figure 4 , Figure 4The structural schematic diagram of the multifunctional interface provided by an embodiment of the present application is shown. For the convenience of description, only the parts related to this embodiment are shown and are described in detail as follows:

[0112] In some embodiments, the first anti-interference module 211 includes an electrostatic discharge circuit 2112. The electrostatic discharge circuit 2112 is connected to each signal transmission line of the network port branch 210 and is used to release the static electricity of each signal transmission line.

[0113] In the technical solution of the embodiment of the present application, the electrostatic discharge circuit 2112 can release the static electricity transmitted by the communication interface 100 to the ground, so that the network branch is protected from static electricity interference, thereby preventing signal disorders or damage to the connected circuit / device.

[0114] According to some embodiments of the present application, please continue to refer to Figure 4 , the network port branch 210 further includes a network transformer T1. The differential signal pair pins on the first side of the network transformer T1 are connected to the first part of the pins 101 of the communication interface 100. The differential signal pair pins on the second side of the network transformer T1 form a signal transmission line for connecting to an external circuit.

[0115] Among them, the external circuit is the circuit of the device where the multifunctional interface is located, such as including a Port Physical Layer (PHY) chip. The differential signal pair pins on the second side of the network transformer T1 are used to connect to the Port Physical Layer (PHY) chip of the external circuit, and the link between the two constitutes the signal transmission line of the network port signal.

[0116] In the technical solution of the embodiment of the present application, the differential signal pair pins on the first side of the network transformer T1 are connected to the first part of the pins 101 of the communication interface 100, and will not be staggered with the wires connecting the serial port branch 220 to the communication interface 100, improving the isolation degree between the network port branch 210 and the serial port branch 220 and enhancing signal isolation.

[0117] According to some embodiments of the present application, refer to Figure 5 , Figure 5 The circuit schematic diagram of the multifunctional interface provided by an embodiment of the present application is shown. For the convenience of description, only the parts related to this embodiment are shown and are described in detail as follows:

[0118] The differential signal pair pins on the first side of the network transformer T1 include pin 16, which is the transmit positive signal pin TX+; and pin 14, which is the transmit negative signal pin TX-; and pin 11, which is the receive positive signal pin RX+; and pin 9, which is the receive signal negative pin RX-. The differential signal pair pins on the second side of the network transformer T1 include: pin 1, which is the transmit positive signal pin TD+; and pin 3, which is the transmit negative signal pin TD-; and pin 6, which is the receive positive signal pin RD+; and pin 8, which is the receive signal negative pin RD-. The differential signal pair pins on the second side of the network transformer T1 form 4 signal transmission lines ETH_TXP, ETH_TXN, ETH_RXP, ETH_RXN.

[0119] According to some embodiments of the present application, please continue to refer to Figure 5 , the terminal of the network port branch 210 for grounding is connected to the ground terminal GND2 of the external circuit.

[0120] Among them, the center tap pins TCT and RCT of the network transformer T1 are used to connect to the power supply, and it is also connected to the ground GND2 through a filter capacitor C1. One end of the filter capacitor C1 connected to the ground is the terminal of the network port branch 210 for grounding; in addition, the ground terminal of the electrostatic discharge circuit 2112 is also the terminal of the network port branch 210 for grounding.

[0121] In the technical solution of the embodiment of the present application, the terminal of the network port branch 210 for grounding is configured to be connected to the ground terminal GND2 of the external circuit, and the interference signal including static electricity is released to the external circuit to avoid the interference signal from interfering with the serial port branch 220 and being transmitted to other devices through the communication interface 100.

[0122] According to some embodiments of the present application, please continue to refer to Figure 5 , the electrostatic discharge circuit 2112 includes a plurality of transient voltage suppression diodes D1, D2, D3, D4, and each signal transmission line is grounded through a transient voltage suppression diode D1, D2, D3, D4.

[0123] One ends of the transient voltage suppression diodes D1, D2, D3, D4 are respectively connected to the 4 signal transmission lines ETH_TXP, ETH_TXN, ETH_RXP, ETH_RXN, and the other ends of the transient voltage suppression diodes D1, D2, D3, D4 are connected to the ground terminal GND2.

[0124] In the technical solution of the embodiment of the present application, an embodiment of an electrostatic discharge circuit 2112 is provided. Transient voltage suppression diodes D1, D2, D3, and D4 are used to suppress instantaneous overvoltage. When a surge pulse voltage appears instantaneously in the network port branch 210, the surge pulse voltage is shunted and clamped, thereby protecting each component in the network port branch 210 from being damaged by the instantaneous surge pulse voltage, and at the same time avoiding the interference of the surge pulse voltage on the serial port branch 220.

[0125] According to some embodiments of the present application, please continue to refer to Figure 5 , the communication interface 100 includes an RJ45 interface (for example, an RJ45 socket). The first part of the pins 101 of the communication interface 100 includes: the first pin, the second pin, the third pin, and the fourth pin. The first pin is connected to the transmit positive signal pin TX+; the second pin is connected to the transmit negative signal pin TX-; the third pin is connected to the receive positive signal pin RX+; the fourth pin is connected to the receive signal negative pin RX-.

[0126] In the technical solution of the embodiment of the present application, an embodiment of a communication interface 100 is provided. At the same time, the pins used by the network port are configured on one side of the communication interface 100, physically isolating the network port signal from the serial port signal to prevent crosstalk of different levels between the two signals.

[0127] According to some embodiments of the present application, refer to Figure 5 and Figure 6 , Figure 6 shows a schematic diagram of the module of the first power supply circuit in the multifunctional interface provided by an embodiment of the present application. For the sake of clarity, only the parts related to this embodiment are shown and are described in detail as follows:

[0128] The multifunctional interface further includes a first power supply circuit 230. The input end of the first power supply circuit 230 is used to connect to a first power supply VCC3V3 (for example, a 3.3V voltage). The output end of the first power supply circuit 230 is connected to the center tap pins TCT and RCT of the network transformer T1. The first power supply circuit 230 is used to provide a first supply voltage VCC3V3_G to the center tap pins TCT and RCT of the network transformer T1.

[0129] The first power supply VCC3V3 is provided by an external circuit, such as the device where the multifunctional interface is located. In the technical solution of the embodiment of the present application, the network port branch 210 is powered separately, so that the power supply of the network port branch 210 is isolated from that of the serial port branch 220, enhancing the anti-interference ability and the signal isolation between the network port signal and the serial port signal. Optionally, when the first power supply VCC3V3 also comes from the same external circuit where the network port branch 210 is grounded, the power supply VCC3V3 and the ground GND2 are in the same loop, ensuring the stability of the transmission signal of the multifunctional interface.

[0130] According to some embodiments of the present application, continue to refer to Figure 6 , in some embodiments, the first power supply circuit 230 includes a first wire 231 and a filtering element 232. The filtering element 232 is disposed on the first wire 231. The input end of the first wire 231 is used to connect to the first power supply VCC3V3, and the output end of the first wire 231 is connected to the center tap pins TCT and RCT of the network transformer T1. In the technical solution of the embodiment of the present application, a filtering software is provided on the first power supply circuit 230 to reduce the interference of the power supply to the network port branch 210.

[0131] According to some embodiments of the present application, the filtering element 232 includes a magnetic bead, and the magnetic bead is sleeved on the first wire 231. In the technical solution of the embodiment of the present application, the magnetic bead has a low cost and is convenient to install.

[0132] According to some embodiments of the present application, continue to refer to Figure 4 , the second anti-interference module 221 includes an isolation transmission circuit 2212. The isolation transmission circuit 2212 is connected in series on the serial port branch 220, and the isolation transmission circuit 2212 is used to reduce the interference signal of the ground loop.

[0133] Among them, the isolation transmission circuit 2212 can be any device capable of realizing signal electrical isolation transmission, such as an optocoupler, a digital isolator, etc.

[0134] In the technical solution of the embodiment of the present application, an isolation transmission circuit 2212 is provided on the serial port branch 220 to electrically isolate the communication interface 100 (and the devices connected thereto) from the external circuit, reduce the interference signal of the ground loop, and at the same time enhance the signal isolation ability during serial port signal communication.

[0135] According to some embodiments of the present application, continue to refer to Figure 4 , the serial port branch 220 further includes a serial port transceiver IC1. The transceiver signal pins on the first side of the serial port transceiver IC1 are connected to the second part of the pins 102 of the communication interface 100. The transceiver signal pins on the second side of the serial port transceiver IC1 are connected to the first side of the isolation transmission circuit 2212, and the second side of the isolation transmission circuit 2212 is used to connect to the external circuit.

[0136] Among them, the external circuit is the circuit of the device where the multifunctional interface is located. The two signal transmission lines UATR_TX and UART_RT formed on the second side of the isolation transmission circuit 2212 form a serial port of a Universal Asynchronous Receiver / Transmitter (UART) to communicate with the external circuit.

[0137] In the technical solution of the embodiment of the present application, the transceiver signal pins on the first side of the serial transceiver IC1 are connected to the second part of the pins 102 of the communication interface 100, and will not be staggered with the wires connecting the network port branch 210 to the communication interface 100, improving the isolation degree between the network port branch 210 and the serial port branch 220 and enhancing signal isolation.

[0138] According to some embodiments of the present application, please continue to refer to Figure 5 , the transceiver signal pins on the first side of the serial transceiver IC1 include: the 6th pin and the 7th pin. The 7th pin is the first transmit signal pin RIN, and the 6th pin is the first receive signal pin TOUT. Exemplarily, the 6th pin and the 7th pin form an RS232 serial port. Please continue to refer to Figure 5 , the communication interface 100 includes an RJ45 interface. The second part of the pins 102 of the communication interface 100 includes the 7th pin and the 8th pin. The 7th pin is connected to the first transmit signal pin RIN, and the 8th pin is connected to the first receive signal pin TOUT.

[0139] In the technical solution of the embodiment of the present application, the pins used by the serial port and the pins used by the network port are isolated from each other on the communication interface 100, physically isolating the network port signal and the serial port signal to prevent crosstalk of different levels between the two signals.

[0140] According to some embodiments of the present application, please continue to refer to Figure 5 , the isolation transmission circuit 2212 includes a digital isolator IC2. The transceiver signal pins IN1 and OUT2 on the first side of the digital isolator IC2 are connected to the transceiver signal pins TIN and ROUT on the second side of the serial transceiver IC1. The two signal transmission lines UATR_TX and UART_RT formed by the transceiver signal pins IN2 / OUT1 on the second side of the digital isolator IC2 are used to connect to an external circuit.

[0141] In the technical solution of the embodiment of the present application, an embodiment of an isolation transmission circuit 2212 is provided. The digital isolator IC2 reduces the noise of the ground loop, and current isolation enables the serial port signal transmission not to pass through an electrical connection or a leakage path, thereby avoiding safety risks.

[0142] According to some embodiments of the present application, please continue to refer to Figure 5 , the transceiver signal pins on the second side of the serial transceiver IC1 include: the second transmit signal pin ROUT (the 5th pin) and the second receive signal pin TIN (the 4th pin).

[0143] The transceiver signal pins on the first side of the digital isolator IC2 include: a third transmit signal pin OUT2 (pin 6), connected to the second receive signal pin TIN of the serial transceiver IC1; and a third receive signal pin IN1, connected to the second transmit signal pin ROUT (pin 7) of the serial transceiver IC1.

[0144] According to some embodiments of the present application, please continue to refer to Figure 5 , the transceiver signal pins on the second side of the digital isolator IC2 include: a fourth transmit signal pin OUT1 (pin 2), for transmitting a universal asynchronous transmission signal to an external circuit; and a fourth receive signal pin IN2 (pin 3), for receiving a universal asynchronous transmission signal from the external circuit.

[0145] In some embodiments, the signal ground pins SD / GND on the first side and the second side of the serial transceiver IC1 and the signal ground pin GNDB on the first side of the digital isolator IC2 are electrically connected to the signal ground pin GND1 (pin 6) of the communication interface 100, and the signal ground pin GNDA on the second side of the digital isolator IC2 is connected to the ground terminal GND2 of the external circuit.

[0146] In the technical solution of the embodiment of the present application, the circuit from the digital isolator IC2 of the serial port branch 220 to one side of the communication interface 100 is grounded in a different way from the network port branch 210, so that the serial port branch 220 and the network port branch 210 are grounded isolated, thereby enhancing the ability to resist common ground crosstalk.

[0147] According to some embodiments of the present application, please continue to refer to Figure 5 and Figure 7 , Figure 7 shows a schematic diagram of the modules of the second and third power supply circuits in a multifunctional interface provided by an embodiment of the present application. For the sake of convenience of description, only the parts related to this embodiment are shown and are described in detail as follows:

[0148] The multifunctional interface further includes a second power supply circuit 240 and a third power supply circuit 250. The input end of the second power supply circuit 240 is used to connect to a second power supply 2V5. The output end of the second power supply circuit 240 is connected to the power supply pin VDD1, the fourth transmit signal pin OUT1, and the fourth receive signal pin IN2 on the second side of the digital isolator IC2. The second power supply circuit 240 is used to provide a second power supply voltage VCC2V5 for the power supply pin VDD1, the fourth transmit signal pin OUT1, and the fourth receive signal pin IN2 on the second side of the digital isolator IC2.

[0149] Among them, the fourth transmission signal pin OUT1 and the fourth reception signal pin IN2 are respectively connected to the output end of the second power supply circuit 240 through pull-up resistors R4 and R5, and the second power supply voltage VCC2V5 provides a pull-up power supply for the two signal transmission lines UATR_TX and UART_RT.

[0150] The input end of the third power supply circuit 250 is used to connect to the third power supply VCC5V0. The output end of the third power supply circuit 250 is connected to the power supply pin VDDB on the first side of the digital isolator IC2 and the power supply pin VCC of the serial transceiver IC1. The third power supply circuit 250 is used to provide the third power supply voltage VCC5V0_G for the power supply pin VDDB on the first side of the digital isolator IC2 and the power supply pin VCC of the serial transceiver IC1.

[0151] Among them, the second power supply 2V5 and the third power supply VCC5V0 are provided by an external circuit, such as the device where the multifunctional interface is located.

[0152] In the technical solution of the embodiment of the present application, by configuring separate power supplies for the serial port branch 220 and the network port branch 210, the power supplies of the network port branch 210 and the serial port branch 220 are isolated, enhancing the anti-interference ability and the signal isolation between the network port signal and the serial port signal. Optionally, when the second power supply 2V5 also comes from the same external circuit grounded on the second side of the digital isolator IC2, the power supply and the ground are in the same loop, ensuring the stability of the transmission signal of the multifunctional interface.

[0153] In some embodiments, the second power supply circuit 240 includes a second wire. The first end and the second end of the second wire respectively form the input end and the output end of the second power supply circuit 240. In the technical solution of the embodiment of the present application, an embodiment of the second power supply circuit is provided, which is simple, reliable, and low in cost.

[0154] According to some embodiments of the present application, please continue to refer to Figure 5 and Figure 8 , Figure 8 shows a schematic circuit diagram of the third power supply circuit in the multifunctional interface provided by an embodiment of the present application. For the sake of convenience of description, only the parts related to this embodiment are shown and are described in detail as follows:

[0155] The third power supply circuit 250 includes an isolation transformer U1. The power supply pin VIN of the isolation transformer U1 is used to connect to the third power supply VCC5V0. The grounding pin GND of the isolation transformer U1 is connected to the grounding end GND2 of the external circuit. The output positive electrode +VO of the isolation transformer U1 outputs the third power supply voltage VCC5V0_G, and the output negative electrode 0V of the isolation transformer U1 is connected to the signal ground pin GND1 of the communication interface 100.

[0156] In some embodiments, the third power supply circuit 250 further includes filter capacitors C2, C3 and a voltage dividing resistor R1. The filter capacitor C2 is used for input filtering and is connected between the power supply pin VIN and the ground pin GND of the isolation transformer U1. The filter capacitor C3 is used for output filtering and is connected between the output positive terminal +VO and the output negative terminal 0V of the isolation transformer U1.

[0157] In the technical solution of the embodiment of the present application, an embodiment of a third power supply circuit 250 is provided. At the same time, the input side and the output end of the isolation transformer U1 are respectively connected to different grounds GND1 and GND2, so that the external circuit providing the third power supply VCC5V0 is grounded differently from the serial port branch 220, improving the anti-interference ability of the serial port branch 220.

[0158] In a second aspect, an embodiment of the present application further provides a power device, and the power device is provided with the multifunctional interface as described above.

[0159] In the technical solution of the embodiment of the present application, the devices using the above-mentioned multifunctional interface, the network port and the serial port of the devices connected through the multifunctional interface have strong anti-interference ability, which plays a protective role for the devices, improves the problem that the devices with network ports or serial ports are damaged due to the weak anti-interference ability of the network ports or serial ports, and improves the reliability of signal transmission between devices and the reliability of the devices themselves.

[0160] According to some embodiments of the present application, please refer to Figure 5 and Figure 9 , Figure 9 shows a circuit schematic diagram of an integrated cable provided by an embodiment of the present application. For the sake of convenience of description, only the parts related to this embodiment are shown and are described in detail as follows:

[0161] An integrated cable 10 applicable to the multifunctional interface described in any of the above embodiments. The integrated cable 10 includes a first communication interface 11, a second communication interface 12 and a third communication interface 13. The first part of the pins 111 of the first communication interface 11 is connected to the transmit positive signal pin TX+, the transmit negative signal pin TX+, the receive positive signal pin RX+ and the receive signal negative pin RX+ of the second communication interface 12. The second part of the pins 112 of the first communication interface 11 is connected to the signal ground pin SD, the transmit signal pin TOUT and the receive signal pin RIN of the third communication interface 13; the first part of the pins 111 and the second part of the pins 112 of the first communication interface 11 are physically isolated from each other.

[0162] In the technical solution of the embodiment of the present application, the integrated cable 10 can transmit serial signals and network signals simultaneously, reducing the number of cables and the size of the device panel during device debugging. At the same time, the first part of the pins 111 and the second part of the pins 112 that communicate with the second communication interface 12 and the third communication interface 13 respectively on the first communication interface 11 are physically isolated to prevent crosstalk of different levels between the two signals, while enhancing the signal isolation ability, avoiding damage to the network port and reducing the signal transmission error rate, enabling it to be applied in a strong electromagnetic interference environment, and protecting the network port and serial port of the device connected to the integrated cable 10.

[0163] According to some embodiments of the present application, please refer to Figure 5 and Figure 9 , and the details are as follows: The first communication interface 11 includes an RJ45 interface, the second communication interface 12 includes an RJ45 interface, and the first part of the pins 111 of the first communication interface 11 includes:

[0164] Pin 1, connected to Pin 1 of the second communication interface 12 as the positive signal pin TX+ for transmission;

[0165] Pin 2, connected to Pin 2 of the second communication interface 12 as the negative signal pin TX- for transmission;

[0166] Pin 3, connected to Pin 3 of the second communication interface 12 as the positive signal pin RX+ for reception; and Pin 4, connected to Pin 6 of the second communication interface 12 as the negative signal pin RX- for reception.

[0167] In the technical solution of the embodiment of the present application, an integrated cable 10 suitable for RJ45 interfaces at both ends is provided. The first communication interface 11 selects the first part of the pins 111 configured as the network port on one side to avoid crossing with the second part of the pins 112, thereby forming physical isolation; the pins forming the network port of the second communication interface 12 are selected with the generally common pin numbers in the market, so that the second communication interface 12 can be adapted to most devices with network ports in the market.

[0168] According to some embodiments of the present application, please refer to Figure 5 and Figure 9 , and the details are as follows: The third communication interface 13 includes a DB9 interface, and the second part of the pins 112 of the first communication interface 11 includes:

[0169] Pin 6, connected to Pin 5 of the third communication interface 13 as the signal ground pin SD;

[0170] Pin 7, connected to Pin 3 of the third communication interface 13 as the first transmission signal pin TOUT; and

[0171] The 8th pin is connected to the 2nd pin of the third communication interface 13 which serves as the first receiving signal pin RIN.

[0172] In the technical solution of the embodiment of the present application, an integrated cable 10 is provided, one end of which is applicable to an RJ45 interface, and the other end is applicable to a BD9 interface. The first communication interface 11 selects the second part of pins 112 configured as a serial port on one side to avoid crossing with the first part of pins 111, thereby forming physical isolation; the pins of the second communication interface 12 forming a serial port are selected with the generally common pin numbers in the market, so that the second communication interface 12 can be adapted to most devices with a serial port in the market.

[0173] In terms of hardware of the RJ45 interface serving as the first communication interface 11, none of the one or more pins in the first part of pins 111 fall between any two adjacent pins in the second part of pins 112, and none of the one or more pins in the second part of pins 112112 fall between any two adjacent pins in the first part of pins 111.

[0174] It can be understood that the first communication interface 11 is an RJ45 plug for plugging into the communication interface 100 of the multifunctional interface, and the communication interface 100 is, for example, an RJ45 socket. The second communication interface 12 is an RJ45 plug, and the third communication interface 13 is a DB9 plug.

[0175] In the technical solution of the embodiment of the present application, the integrated cable 10 can transmit serial port signals and network signals simultaneously, reducing the number of cables and the size of the device panel during device debugging. At the same time, the pins of the second communication interface 12 and the third communication interface 13 configured on the first communication interface 11 are physically isolated to prevent crosstalk of different levels between the two signals, while enhancing the signal isolation ability, avoiding damage to the network port and reducing the signal transmission error rate, enabling it to be applied in a strong electromagnetic interference environment and protecting the network port and serial port of the device connected to the integrated cable 10.

[0176] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A multi-functional interface, including a communication interface, characterized in that, The multifunctional interface further includes: An Ethernet port branch connected to the first part of the pins forming the Ethernet port in the communication interface; A serial port branch connected to the second part of the pins forming the serial port in the communication interface, and the first part of the pins and the second part of the pins in the communication interface are physically isolated from each other.

2. The multifunctional interface according to claim 1, wherein A first anti-interference module is provided on the Ethernet port branch, and the first anti-interference module is used to filter out the interference signals of the Ethernet port branch.

3. The multifunctional interface according to claim 1, characterized in that, A second anti-interference module is provided on the serial port branch, and the second anti-interference module is used to filter out the interference signals of the serial port branch.

4. The multifunctional interface according to claim 2, characterized in that, The first anti-interference module includes an electrostatic discharge circuit, and the electrostatic discharge circuit is connected to each signal transmission line of the Ethernet port branch for releasing the static electricity of each signal transmission line.

5. The multifunctional interface according to claim 4, wherein The Ethernet port branch further includes a network transformer. The differential signal pair pins on the first side of the network transformer are connected to the first part of the pins of the communication interface, and the differential signal pair pins on the second side of the network transformer form the signal transmission lines for connecting to an external circuit.

6. The multifunctional interface according to claim 4 or 5, characterized in that, The electrostatic discharge circuit includes a plurality of transient voltage suppression diodes, and each signal transmission line is grounded through one of the transient voltage suppression diodes.

7. The multifunctional interface according to claim 5, characterized in that, The differential signal pair pins on the first side of the network transformer include a transmit positive signal pin, a transmit negative signal pin, a receive positive signal pin, and a receive negative signal pin; The communication interface includes an RJ45 interface, and the first part of the pins of the communication interface includes: Pin 1, connected to the transmit positive signal pin; Pin 2, connected to the transmit negative signal pin; Pin 3, connected to the receive positive signal pin; and Pin 4, connected to the receive negative signal pin.

8. The multifunctional interface according to claim 3, characterized in that, The second anti-interference module includes an isolation transmission circuit, and the isolation transmission circuit is connected in series on the serial port branch, and the isolation transmission circuit is used to reduce the noise of the ground loop.

9. The multifunctional interface according to claim 8, characterized in that, The serial port branch further includes a serial port transceiver. The transceiver signal pins on the first side of the serial port transceiver are connected to the second part of the pins of the communication interface, the transceiver signal pins on the second side of the serial port transceiver are connected to the first side of the isolation transmission circuit, and the second side of the isolation transmission circuit is used to connect to an external circuit.

10. The multifunctional interface according to claim 9, wherein, The isolation transmission circuit includes a digital isolator. The transceiver signal pins on the first side of the digital isolator are connected to the transceiver signal pins on the second side of the serial port transceiver, and the transceiver signal pins on the second side of the digital isolator are used to connect to an external circuit.

11. The multifunctional interface according to claim 9 or 10, wherein: The transceiver signal pins on the first side of the serial port transceiver include: a first transmit signal pin and a first receive signal pin; The communication interface includes an RJ45 interface, and the second part of the pins of the communication interface includes: Pin 7, connected to the first transmit signal pin; and Pin 8, connected to the first receive signal pin.

12. The multifunctional interface according to claim 10, wherein, The transceiver signal pins on the second side of the serial port transceiver include: a second transmit signal pin and a second receive signal pin; The transceiver signal pins on the first side of the digital isolator include: A third transmission signal pin, connected to the second reception signal pin; and A third reception signal pin, connected to the second transmission signal pin.

13. The multifunctional interface according to claim 12, characterized in that, The transceiver signal pins on the second side of the digital isolator include: A fourth transmission signal pin for transmitting a universal asynchronous transmission signal to the external circuit; and A fourth reception signal pin for receiving the universal asynchronous transmission signal of the external circuit.

14. A power device, characterized in that, The power device is provided with the multi-functional interface according to any one of claims 1 to 13.

15. An integrated cable applicable to the multi-functional interface according to any one of claims 1 to 13, comprising a first communication interface, characterized in that, It further includes a second communication interface and a third communication interface. The first part of the pins of the first communication interface is connected to the positive transmission signal pin, negative transmission signal pin, positive reception signal pin, and negative reception signal pin of the second communication interface. The second part of the pins of the first communication interface is connected to the signal ground pin, transmission signal pin, and reception signal pin of the third communication interface; the first part of the pins and the second part of the pins of the first communication interface are physically isolated from each other.

16. The integrated cable according to claim 15, wherein, The first communication interface includes an RJ45 interface, the second communication interface includes an RJ45 interface, and the first part of the pins of the first communication interface includes: Pin 1, connected to Pin 1 of the second communication interface as the positive transmission signal pin; Pin 2, connected to Pin 2 of the second communication interface as the negative transmission signal pin; Pin 3, connected to Pin 3 of the second communication interface as the positive reception signal pin; and Pin 4, connected to Pin 6 of the second communication interface as the negative reception signal pin.

17. The integrated cable according to claim 15, characterized in that, The first communication interface includes an RJ45 interface, the third communication interface includes a DB9 interface, and the second part of the pins of the first communication interface includes: Pin 6, connected to Pin 5 of the third communication interface as the signal ground pin; Pin 7, connected to Pin 3 of the third communication interface as the first transmission signal pin; and Pin 8, connected to Pin 2 of the third communication interface as the first reception signal pin.

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