Optical module for high-speed signal transmission of electric coupler

Abstract

The invention provides an optical module for high-speed signal transmission of an electric coupler, relates to the field of connectors and network signal transmission, and solves the problem that the service life and the stability of an electric coupler are limited in an existing network connection mode based on physical contact. The optical module is installed on an insulation assembly of the electrical coupler, and the electrical coupler is further provided with a protective shell. The insulating component is connected with the protective shell, a coupler connecting surface is formed on the insulating component, and the optical module is positioned in a hollow accommodating cavity formed by the protective shell and the insulating component; the optical module is provided with a transmitting port and a receiving port which are arranged on the coupler connecting surface and communicated with the interior of the optical module; when the two electric car couplers are in butt joint, an optical signal used for transmitting communication data is transmitted by the transmitting port of one optical module and is received and processed by the receiving port of the other optical module. Through non-contact butt joint, the plugging service life loss of parts can be directly avoided, the service life of the electric coupler is prolonged, and the stability of the electric coupler is improved.

Description

Technical Field

[0001] The present invention relates to the field of connector and network signal transmission, and is applied in rail transit vehicles, and in particular to an optical module for high-speed signal transmission of an electric coupler. Background Art

[0002] In modern rail transit systems, electric couplers are an important part of flexible train formation, and their performance and reliability directly affect the efficiency and safety of the entire transportation system. With the increase in train formation flexibility and the development of network communication technology, the requirements for the embedded network transmission capacity of electric couplers are gradually increasing. Traditional train formation connections usually rely on a combination of mechanical coupling and electrical connection, in which the electrical connection part is responsible for providing power supply and signal transmission functions.

[0003] In order to adapt to the growing demand for data transmission, the network module in the electric coupler has undergone an evolution from low speed to high speed, starting from the initial multi-function vehicle bus protocol. At present, the 100M level of network transmission can no longer meet the needs of increasingly complex and data-intensive applications, such as real-time monitoring, fault diagnosis, and high-definition video streaming between cars. Therefore, the network transmission speed has been further increased to the gigabit level, which undoubtedly brings new challenges to the existing electric couplers.

[0004] The network module of traditional electric couplers has certain limitations in design, especially when faced with frequent coupling operations. Since each coupling involves physical plugging and unplugging, this repeated mechanical movement will inevitably cause wear on the connector, which in turn affects its service life and reliability. In addition, as the number of uses increases, problems such as poor contact or corrosion may also occur, resulting in unstable or failed signal transmission. These problems not only increase maintenance costs, but may also pose safety hazards and limit the flexibility and efficiency of train operations.

[0005] Another key issue is that in a high-frequency use environment, traditional network modules have difficulty meeting the tens of thousands of coupling lifespans required of electric couplers. Even with the use of high-quality materials and technical optimization, it is still difficult to overcome the aging problem caused by physical contact. Moreover, when the train is in operation, vibration and other environmental factors will also accelerate the aging process of these components, further shortening their effective working time.

[0006] In summary, the current rail transit industry's demand for electrical coupler network transmission is developing towards high speed and higher reliability, while the existing network connection method based on physical contact has gradually exposed problems that cannot be ignored. With the increase in train marshaling flexibility and the growth in data transmission volume, the shortcomings of existing network modules in terms of life and stability have become technical problems that need to be solved urgently. In order to solve this problem and meet higher development requirements in the future, the industry urgently needs to explore a new solution to replace the traditional electrical coupler network connection and signal transmission mode to ensure the efficiency and safety of train marshaling and operation. Summary of the invention

[0007] The purpose of the present invention is to solve the limitations of the existing physical contact-based network connection method in terms of life and stability in electric couplers, and therefore an optical module for high-speed signal transmission in electric couplers is proposed. Optical signals can realize spatial optical transmission and reduce optical losses, while non-contact docking can directly avoid the loss of plug-in life of parts. The performance of the electric coupler installed with the optical module is only affected by the aging of materials and devices, so its life and stability are greatly improved.

[0008] The present invention adopts the following technical solutions to achieve the purpose:

[0009] An optical module for high-speed signal transmission of an electric coupler, wherein the optical module is installed on a side of an insulating component of the electric coupler away from a coupler connection surface, and the electric coupler also has a protective shell; the insulating component is connected to the protective shell, and the insulating component is arranged on a side of the protective shell facing the coupler connection end, and a coupler connection surface is formed on the insulating component; the optical module is located in a hollow accommodating cavity formed by the protective shell and the insulating component; the optical module has a transmitting port and a receiving port, both of which are arranged on the coupler connection surface and are connected to the inside of the optical module; when two of the electric couplers are docked, the transmitting port of one optical module is matched and aligned with the receiving port of another optical module on the same axis; an optical signal for transmitting communication data is emitted by the transmitting port of one of the optical modules, and is received and processed by the receiving port of the other optical module.

[0010] Preferably, when the two electric couplers are docked, a space gap of a preset width is left between the transmitting port of one optical module and the receiving port of another optical module; after the optical signal is emitted from the transmitting port, it enters the receiving port after passing through the space gap.

[0011] Preferably, the protective shell includes a shell and a flip cover, one side of the shell is open and provided with an insulating component, the shell has an inner cavity for accommodating the optical module; the flip cover is rotatably connected to the shell, and the flip cover is located at a corresponding position of the insulating component; when the flip cover is closed, the flip cover rotates to the open side of the shell and covers the hook connection surface of the insulating component; when the flip cover is opened, the flip cover rotates above the shell and exposes the hook connection surface of the insulating component.

[0012] Preferably, the shell is made of aluminum alloy; when the two electrical couplers are docked, the corresponding two shells are connected and abutted together through the docking support block to form a sealing structure that covers the insulating component and the optical module; at the abutting point of the two shells, a rubber part is provided corresponding to each shell, and the sealing of the two shells is achieved by the rubber part, and the flip covers are in the open position at this time.

[0013] Furthermore, both the transmitting port and the receiving port are connected to the box body of the optical module through an optical antenna; the optical antenna has a path for transmitting optical signals, and the optical signal from the inside of the box body is emitted from the transmitting port after passing through the corresponding optical antenna, and the optical signal from another optical module is received by the receiving port and then transmitted into the inside of the box body through the corresponding optical antenna.

[0014] Specifically, the optical antenna corresponding to the transmitting port is used to collimate and expand the optical signal to form a parallel light beam, which is then emitted through the transmitting port and received by the receiving port of another optical module; the optical antenna corresponding to the receiving port is used to focus the received optical signal and transmit it into the box of the optical module.

[0015] Furthermore, the optical module includes a network electrical port, a PHY chip, a driver, a laser diode and an optical receiving circuit; wherein the network electrical port is connected to the PHY chip, the PHY chip is respectively connected to the driver and the optical receiving circuit, and the driver is connected to the laser diode; when transmitting communication data, the network electrical port receives the electrical signal corresponding to the communication data, and transmits the electrical signal to the PHY chip, the PHY chip converts the electrical signal into a digital signal, and outputs it to the driver, the driver drives the laser diode to generate a corresponding optical signal, and emits it from the transmitting port; when receiving communication data, the optical signal from the receiving port is converted into a digital signal by the optical receiving circuit, and transmitted to the PHY chip, the PHY chip converts the digital signal into an electrical signal, and outputs it through the network electrical port.

[0016] Furthermore, the optical receiving circuit includes a photodiode, a transimpedance amplifier and a limiting amplifier; when receiving communication data, the optical signal from the receiving port is converted into a photocurrent under the action of the photodiode, the photocurrent is output as a differential voltage signal after passing through the transimpedance amplifier, the differential voltage signal is output as a digital signal after passing through the limiting amplifier and transmitted to the PHY chip; the size of the differential voltage signal is positively correlated with the strength of the photocurrent; the limiting amplifier is used to amplify the differential voltage signal, and compress the signal amplitude greater than the preset output voltage, and output it as a digital signal.

[0017] Specifically, the optical module also includes a power port and a DC-DC isolated power module; the power port is connected to the DC-DC isolated power module, the power port is used to obtain the DC power provided by the vehicle end, and the DC-DC isolated power module is used to isolate and transform the DC power to obtain the working power of the optical module.

[0018] Preferably, the box body of the optical module adopts a shielding shell with multiple heat dissipation holes. A shielding cover is also provided around the optical receiving circuit, which is used to shield and isolate the optical signal generated by the laser diode of the optical module itself, so that the optical receiving circuit only receives the optical signal from another optical module transmitted by the optical antenna corresponding to the receiving port.

[0019] In summary, due to the adoption of this technical solution, the beneficial effects of the present invention are as follows:

[0020] The optical module of the present invention adopts an optical signal transmission mechanism to realize spatial optical transmission. This non-contact docking design avoids the physical loss caused by traditional plug-in and unplug operations. Compared with traditional contact connections, the present invention only needs to consider the impact of aging of materials and devices on performance, greatly extending the service life of the network module and the overall stability of the electrical coupler system.

[0021] In the present invention, the optical module is integrated into the insulating component of the electric coupler. When two vehicles are connected, the transmitting end and the receiving end of one electric coupler can achieve non-contact precise docking with the corresponding port of the other vehicle. A small space gap is maintained between the two docking ends, ensuring that the optical signal can be transmitted efficiently and reducing optical loss. This structural design can optimize the signal transmission efficiency. Since the optical signal transmission does not require contact connection, the impact of the existing contact method caused by cable reasons is reduced.

[0022] The non-contact docking design also brings the additional advantage of reducing the space occupied by the insulating panel, making the entire system structure more compact and providing more installation space for other components. This feature also gives the present invention a wide range of application potential, making it not only suitable for electrical couplers, but also can be easily expanded to other products that require stable and long-life connection solutions, providing new ideas and technical support for the development of related fields. It can be seen that the present invention successfully provides a more reliable, durable and easy-to-expand solution for key parts such as network modules and signal transmission in electrical couplers, making it a new type of electrical coupler with improved life and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the electric coupler in the present invention;

[0024] Figure 2 It is a front view of the electric coupler of the present invention;

[0025] Figure 3 It is a schematic diagram of the protective housing of the electric coupler in the present invention cut away from the top;

[0026] Figure 4 This is a schematic diagram of optical signal transmission after two optical modules are connected in the present invention;

[0027] Figure 5 is a schematic diagram of a protective housing of an electric coupler in the present invention;

[0028] Figure 6 It is a schematic diagram of the protective housing of the electric coupler of the present invention after the cover is closed;

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the electric coupler of the present invention after the protective shell is hidden;

[0030] Figure 8 It is a side view of the insulating component and the optical module in the present invention after being connected;

[0031] Fig. 9 A schematic diagram of the three-dimensional structure of the optical module of the present invention;

[0032] Fig.10 is a top view of the optical module of the present invention;

[0033] Fig.11 is a side view of the optical module of the present invention;

[0034] Fig.12 It is a side elevation view of the transceiver port of the optical module of the present invention;

[0035] Fig.13 Schematic diagram of the internal electrical structure of the optical module of the present invention.

[0036] The meanings of the symbols in the accompanying drawings are as follows:

[0037] 1-protective housing, 11-housing, 12-flip cover; 2-insulating component;

[0038] 3-optical module, 31-transmitting port, 32-receiving port, 33-optical antenna, 34-network electrical port, 35-power port, 36-heat dissipation hole. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Example 1

[0042] An optical module for high-speed signal transmission of electric couplers, see Figures 1 to 3 As an overall diagram of its appearance, the optical module 3 is installed on the side of the insulating component 2 of the electric coupler away from the coupler connection surface, and the electric coupler also has a protective shell 1. The insulating component 2 is connected to the protective shell 1, and the insulating component 2 is arranged on the side of the protective shell 1 facing the coupler connection end, and the coupler connection surface is formed on the insulating component 2; the optical module 3 is located in the hollow accommodation cavity formed by the protective shell 1 and the insulating component 2.

[0043] In this embodiment, Figure 1 and Figure 4 As shown, the optical module 3 has a transmitting port 31 and a receiving port 32, both of which are arranged on the coupler connection surface and communicated with the inside of the optical module 3. When two electric couplers are docked, the transmitting port 31 of one optical module is matched and aligned with the receiving port 32 of the other optical module on the same axis; the optical signal for transmitting communication data is emitted by the transmitting port 31 of one optical module and received and processed by the receiving port 32 of the other optical module.

[0044] As a preferred embodiment of this embodiment, when two electric couplers are docked, a space gap of a preset width is left between the transmitting port 31 of one optical module and the receiving port 32 of another optical module; after the optical signal is emitted from the transmitting port 31, it enters the receiving port 32 after passing through the space gap.

[0045] Through the above structural design, when the optical module 3 is integrated into the electric coupler for connection, the transmitting port 31 and the receiving port 32 of one optical module are respectively connected with the receiving port 32 and the transmitting port 31 of another optical module to achieve non-contact docking, and the space gap left in the middle enables the optical signal to achieve spatial optical transmission, that is, it does not affect the transmission performance, nor does it reduce the optical loss too much, thereby achieving effective transmission of communication data. This non-contact docking method can directly avoid the plug-in life loss of the relevant parts of the network communication module, and only considers the impact of the natural aging of these components on the performance, so the life and stability of the electric coupler are greatly improved.

[0046] Example 2

[0047] On the basis of Example 1, this example makes a preferred introduction to the protective housing 1 of the electric coupler used for the optical module, so as to make it more suitable for the installation and protection of the optical module.

[0048] Combination Figure 5 , Figure 6 As shown in the diagram, the protective housing 1 includes a shell 11 and a flip cover 12; the shell 11 is open on one side and is provided with an insulating component 2, and the shell 11 has an inner cavity for accommodating the optical module 3; the flip cover 12 is rotatably connected to the shell 11, and the flip cover 12 is located at a corresponding position where the insulating component 2 is located. When the optical module 3 is located in the protective housing 1, its electrical components are connected to the electrical equipment in the vehicle through cables and the like as a transmission medium for electrical signals; the cables can be determined as needed at the location where they are inserted into the shell 11 during actual use.

[0049] The design of the flip cover 12 can better protect the hook connection surface when the electric hook is not in use; when the flip cover 12 is closed, the flip cover 12 rotates to the side of the opening of the housing 11 and covers the hook connection surface of the insulating component 2; when the flip cover 12 is opened, the flip cover 12 rotates above the housing 11 and exposes the hook connection surface of the insulating component 2. In this embodiment, the stress maintenance method of the rotatably connected flip cover 12 in two states can be achieved by setting the elastic force of the spring structure, which is a conventional mechanical technical means of the box flip cover type and will not be repeated here.

[0050] In this embodiment, the material of the shell 11 is preferably aluminum alloy, which can play a good role in internal and external shielding after the two electrical couplers are docked. When the two electrical couplers are docked, the corresponding two shells 11 are connected and abutted through the docking support block to form a sealing structure covering the insulating component 2 and the optical module 3; in this way, the two electrical couplers with the same structure are docked to achieve the establishment of a signal transmission path, and the respective optical modules 3 are located at the corresponding positions of the insulating component 2, and the ports are matched with each other, so that the optical signal can be transmitted between the optical modules 3.

[0051] In this embodiment, at the abutment of the two shells 11, a rubber piece is provided corresponding to each shell 11, and the two shells 11 are sealed by the rubber piece. At this time, the flip cover 12 is in the open position, and the rubber piece can effectively achieve dust and water resistance. Figure 7 , Figure 8 As shown in FIG. 1 , in this embodiment, two sets of optical modules 3 are preferably installed on an insulating component 2 of an electric coupler, so there are two transmitting ports 31 and two receiving ports 32 correspondingly.

[0052] Example 3

[0053] Based on any of the above embodiments, this embodiment makes a preferred introduction to the optical module 3, involving its related electrical components. The overall appearance of the optical module 3 can be seen in Figures 9 to 12 's hint.

[0054] First, both the transmitting port 31 and the receiving port 32 are connected to the box body of the optical module 3 through the optical antenna 33. The structure of the optical antenna 33 is to provide a path with a certain length for the transmission of optical signals. The optical signal from the inside of the box body is emitted from the transmitting port 32 after passing through the corresponding optical antenna 33, and the optical signal from another optical module is received by the receiving port 32 and then transmitted to the inside of the box body through the corresponding optical antenna 33.

[0055] In this embodiment, the optical antenna 33 corresponding to the transmitting port 31 is used to collimate and expand the optical signal to form a parallel light beam, and then the light is sent out through the transmitting port 31 and received by the receiving port 32 of another optical module. The optical antenna 33 corresponding to the receiving port 32 is used to focus the received optical signal and transmit it to the inside of the box of the optical module 3.

[0056] The following is an introduction to the relevant electrical components inside the optical module 3 for achieving optical signal transmission. Fig.13As shown, the optical module 3 includes a network electrical port 34, a PHY chip, a driver, a laser diode and an optical receiving circuit; wherein the network electrical port 34 is connected to the PHY chip, the PHY chip is respectively connected to the driver and the optical receiving circuit, and the driver is connected to the laser diode. The network electrical port 34 can specifically adopt an RJ45 interface to realize the access and transmission of electrical signals, and an M12 socket can be configured for the interface. The PHY chip is the key to realizing photoelectric conversion, and it is also used in the transmission and reception of optical signals; for the electrical signal type network signal MDI interface format data accessed by the RJ45 interface, the chip forms an SGMII data format that can be transmitted by an optical signal after parsing and data analysis; this part of the content is an existing mature technology, which can be selected as needed, and will not be repeated here.

[0057] When transmitting communication data, the network electrical port 34 receives the electrical signal corresponding to the communication data and transmits the electrical signal to the PHY chip. The PHY re-encodes the electrical signal into a digital signal, which is suitable for transmission in the form of an optical signal. At the same time, it is output to the driver through the TX port of the PHY chip. The driver drives the laser diode to generate a corresponding optical signal, which is then emitted from the transmitting port 31 after passing through the corresponding optical antenna 33.

[0058] When receiving communication data, the optical signal from the receiving port 32 passes through the corresponding optical antenna 33, is converted into a digital signal by the optical receiving circuit, and is transmitted to the PHY chip. The PHY chip converts the digital signal into an electrical signal and outputs it through the network electrical port 34.

[0059] In this embodiment, Fig.13 As shown, the optical receiving circuit includes a photosensitive diode, a transimpedance amplifier and a limiting amplifier; when receiving communication data, the optical signal from the receiving port 32 is converted into a photocurrent under the action of the photosensitive diode, and the photocurrent is output as a differential voltage signal after passing through the transimpedance amplifier, and the differential voltage signal is output as a digital signal after passing through the limiting amplifier and transmitted to the PHY chip; the size of the differential voltage signal is positively correlated with the strength of the photocurrent; the limiting amplifier is used to amplify the differential voltage signal, and compress the signal amplitude greater than the preset output voltage, and output it as a digital signal.

[0060] In addition, the working power supply of the optical module 3 of this embodiment is provided by a power port 35 and a DC-DC isolation power module. The power port 35 is connected to the DC-DC isolation power module, and the power port 35 is used to obtain the DC power provided by the vehicle end. The DC-DC isolation power module is used to isolate and transform the DC power to obtain the working power supply of the optical module 3. Specifically, the vehicle end provides a DC24 to 48V power supply, and after it is connected to the power port 35, the DC-DC isolation power module will transform it into DC3.3V, thereby meeting the needs of the optical module 3.

[0061] Finally, as a preferred embodiment of the present invention, the box body of the optical module 3 adopts a shielding shell, and a plurality of heat dissipation holes 36 are provided on the shielding shell to facilitate the heat dissipation of the internal electrical components. The shielding shell can also be provided with a plurality of sets of working indicator lights of the internal components for observation during operation and maintenance. A shielding cover is also provided on the periphery of the optical receiving circuit, and the shielding cover is used to shield and isolate the optical signal generated by the laser diode of the optical module 3 itself, so that the optical receiving circuit only receives the optical signal from another optical module transmitted by the optical antenna 33 corresponding to the receiving port 32.

[0062] In summary, the present invention successfully provides a more reliable, durable and easily expandable solution for key parts such as network modules and signal transmission in electric couplers. After being equipped with the optical module of the present invention, a new electric coupler with improved lifespan and stability can be obtained.

Claims

1. An optical module for high-speed signal transmission of an electric coupler, characterized in that: The optical module (3) is installed on a side of the insulating component (2) of the electric coupler that is away from the coupler connection surface, and the electric coupler also has a protective shell (1); the insulating component (2) is connected to the protective shell (1), and the insulating component (2) is arranged on a side of the protective shell (1) that faces the coupler connection end, and a coupler connection surface is formed on the insulating component (2); the optical module (3) is located in a hollow accommodating cavity formed by the protective shell (1) and the insulating component (2); the optical module (3) has a transmitting port (31) and a receiving port (32), and the transmitting port (31) and the receiving port (32) are both arranged on the coupler connection surface and communicated with the inside of the optical module (3); when the two electric couplers are docked, the transmitting port (31) of one optical module and the receiving port (32) of the other optical module are matched and aligned on the same axis; An optical signal for transmitting communication data is sent out from a transmitting port (31) of one of the optical modules and is received and processed by a receiving port (32) of another optical module.

2. The optical module for high-speed signal transmission of electric couplers according to claim 1, characterized in that: When the two electric couplers are docked, a space gap of a preset width is left between the transmitting port (31) of one optical module and the receiving port (32) of another optical module; after the optical signal is emitted from the transmitting port (31), it enters the receiving port (32) after passing through the space gap.

3. The optical module for high-speed signal transmission of electric coupler according to claim 1, characterized in that: The protective housing (1) comprises a shell (11) and a flip cover (12); one side of the shell (11) is open and provided with an insulating component (2); the shell (11) has an inner cavity for accommodating an optical module (3); the flip cover (12) is rotatably connected to the shell (11), and the flip cover (12) is located at a corresponding position where the insulating component (2) is located; when the flip cover (12) is closed, the flip cover (12) rotates to the open side of the shell (11) and covers the hook connection surface of the insulating component (2); when the flip cover (12) is opened, the flip cover (12) rotates above the shell (11) and exposes the hook connection surface of the insulating component (2).

4. The optical module for high-speed signal transmission of electric couplers according to claim 3, characterized in that: The material of the shell (11) is aluminum alloy; when the two electric car couplers are docked, the corresponding two shells (11) are connected and abutted through the docking support block to form a sealing structure covering the insulating component (2) and the optical module (3); at the abutting position of the two shells (11), a rubber part is provided corresponding to each shell (11), and the sealing of the two shells (11) is achieved by the rubber part, and at this time, the flip cover (12) is in the open position.

5. The optical module for high-speed signal transmission of electric coupler according to claim 1, characterized in that: The transmitting port (31) and the receiving port (32) are both connected to the box body of the optical module (3) through the optical antenna (33); the optical antenna (33) has a path for transmitting optical signals, and the optical signal from the inside of the box body is emitted from the transmitting port (31) after passing through the corresponding optical antenna (33); the optical signal from another optical module is received by the receiving port (32) and then transmitted into the inside of the box body through the corresponding optical antenna (33).

6. The optical module for high-speed signal transmission of electric coupler according to claim 5, characterized in that: The optical antenna (33) corresponding to the transmitting port (31) is used to collimate and expand the optical signal to form a parallel light beam, which is then transmitted through the transmitting port (31) and received by the receiving port (32) of another optical module; the optical antenna (33) corresponding to the receiving port (32) is used to focus the received optical signal and transmit it into the box body of the optical module (3).

7. The optical module for high-speed signal transmission of electric coupler according to claim 5, characterized in that: The optical module (3) comprises a network electrical port (34), a PHY chip, a driver, a laser diode and an optical receiving circuit; wherein the network electrical port (34) is connected to the PHY chip, the PHY chip is respectively connected to the driver and the optical receiving circuit, and the driver is connected to the laser diode; when transmitting communication data, the network electrical port (34) receives an electrical signal corresponding to the communication data, transmits the electrical signal to the PHY chip, the PHY chip converts the electrical signal into a digital signal, and outputs it to the driver, the driver drives the laser diode to generate a corresponding optical signal, and emits it from the transmitting port (31); when receiving communication data, the optical signal from the receiving port (32) is converted into a digital signal by the optical receiving circuit, and transmitted to the PHY chip, the PHY chip converts the digital signal into an electrical signal, and outputs it through the network electrical port (34).

8. The optical module for high-speed signal transmission of electric couplers according to claim 7, characterized in that: The optical receiving circuit comprises a photosensitive diode, a transimpedance amplifier and a limiting amplifier; when receiving communication data, an optical signal from a receiving port (32) is converted into a photocurrent under the action of the photosensitive diode, the photocurrent is output as a differential voltage signal after passing through the transimpedance amplifier, the differential voltage signal is output as a digital signal after passing through the limiting amplifier and transmitted to a PHY chip; the magnitude of the differential voltage signal is positively correlated with the magnitude of the photocurrent; the limiting amplifier is used to amplify the differential voltage signal, and compress the signal amplitude greater than a preset output voltage, and output it as a digital signal.

9. The optical module for high-speed signal transmission of electric coupler according to claim 7, characterized in that: The optical module (3) also includes a power port (35) and a DC-DC isolation power module; The power port (35) is connected to a DC-DC isolation power module, the power port (35) is used to obtain a DC power source provided by the vehicle end, and the DC-DC isolation power module is used to perform isolation transformation on the DC power source to obtain a working power source for the optical module (3).

10. The optical module for high-speed signal transmission of electric coupler according to claim 7, characterized in that: The box body of the optical module (3) adopts a shielding shell, and a plurality of heat dissipation holes (36) are provided on the shielding shell; a shielding cover is also provided around the optical receiving circuit, and the shielding cover is used to shield and isolate the optical signal generated by the laser diode of the optical module (3) itself, so that the optical receiving circuit only receives the optical signal from another optical module transmitted by the optical antenna (33) corresponding to the receiving port (32).

Images