Interface transmission device

Abstract

The invention relates to an interface transmission device. The device comprises a first converter and a second converter, the first converter is connected with the second converter through an optical fiber, and the first converter is used for carrying out photoelectric conversion on an input signal to obtain an output signal and transmitting the output signal to the second converter through the optical fiber. By adopting the device, the transmission distance of the signal control system can be increased.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an interface transmission device. Background Art

[0002] The railway signal control system is responsible for ensuring the safety of railway traffic and the efficiency of transportation. The dangerous failure of the railway signal control system can lead to accidents such as train derailment and collision. In the related technology, the railway signal control system has a transponder transmission system. The transponder in the transponder transmission system and the line-side electronic unit (LEU) usually use cable transmission to exchange information. However, the cable transmission method in the related technology has certain limitations on the transmission distance. The transmission of the cable transmission method is within 2.5 kilometers, which cannot meet the long-distance information exchange. Summary of the invention

[0003] Based on this, it is necessary to provide an interface transmission device to address the above technical problems, which can increase the transmission distance of the signal control system.

[0004] The present application provides an interface transmission device, the device comprising: a first converter and a second converter, the first converter and the second converter are connected via an optical fiber, wherein:

[0005] The first converter is used to perform photoelectric conversion on the input signal to obtain an output signal, and transmit the output signal to the second converter through the optical fiber.

[0006] In one embodiment, the first converter is an indoor converter, and the second converter is an outdoor converter; the first end of the first converter is connected to the ground electronic unit LEU, and the second end is connected to the first end of the second converter through an optical fiber; the second end of the second converter is connected to the transponder; the input signal is a first electrical signal; wherein:

[0007] The first converter is used to receive the first electrical signal sent by the LEU and convert the first electrical signal into a first optical signal;

[0008] The second converter is used for receiving the first optical signal sent by the first converter through the optical fiber, converting the first optical signal into a first output signal, and sending the first output signal to the transponder.

[0009] In one embodiment, the device further comprises a load matching box; the third end of the first converter is connected to the first end of the load matching box; the second end of the load matching box is connected to the LEU; the input signal is a second electrical signal, wherein:

[0010] The second converter is used to receive the second electrical signal sent by the transponder and convert the second electrical signal into a second optical signal;

[0011] The first converter is used to receive the second optical signal sent by the second converter through the optical fiber, and convert the second optical signal into a third electrical signal; the load matching box is used to receive the third electrical signal, process the third electrical signal to obtain a second output signal, and send the second output signal to the LEU.

[0012] In one embodiment, a first information transmission interface is used between the first converter and the LEU; and the first information transmission interface or the second information transmission interface is used between the second converter and the transponder;

[0013] The second information transmission interface is used between the first converter and the load matching box; and the second information transmission interface is used between the load matching box and the LEU.

[0014] In one embodiment, the first converter comprises an isolated power supply, a conversion circuit, a first optical fiber transmitter, a first optical fiber receiver, a first controller and a load driving circuit; the first end of the isolated power supply is connected to the LEU, and the second end is connected to the first end of the conversion circuit; the second end of the conversion circuit is used to connect to the LEU; the third end is connected to the first end of the first optical fiber transmitter; the second end of the first optical fiber transmitter is connected to the second converter through an optical fiber; the first end of the first optical fiber receiver is connected to the second converter through an optical fiber, the second end is connected to the first end of the first controller, and the second end is connected to the first end of the load driving circuit; the second end of the load driving circuit is connected to the first end of the load matching box; wherein:

[0015] The conversion circuit is used to convert the first electrical signal into a first digital coded signal; the first optical fiber transmitter is used to receive the first digital coded signal sent by the conversion circuit, and convert the first digital coded signal into a first optical signal, and send the first optical signal to the second converter through the optical fiber;

[0016] The first optical fiber receiver is used to convert the second optical signal into a second digital coded signal;

[0017] The first controller is used to receive the second digital coded signal sent by the first optical fiber receiver, and perform signal processing on the second digital coded signal to obtain a control signal;

[0018] The load driving circuit is used to receive the control signal and perform signal processing on the control signal to obtain the third electrical signal, wherein the third electrical signal is used to enable the load matching box to determine the load type;

[0019] The isolated power supply is used to supply power to the conversion circuit and the load driving circuit.

[0020] In one embodiment, the second converter comprises a second optical fiber receiver, a driving circuit, a detection circuit, a second controller and a second optical fiber transmitter; the first end of the second optical fiber receiver is connected to the first converter through the optical fiber, and the second end is connected to the first end of the driving circuit; the second end of the driving circuit is connected to the transponder; the first end of the detection circuit is connected to the transponder, and the second end is connected to the first end of the controller; the second end of the controller is connected to the first end of the second optical fiber transmitter; the second end of the second optical fiber transmitter is connected to the first converter through the optical fiber; wherein:

[0021] The detection circuit is used to convert the second electrical signal into a digital signal;

[0022] The controller is used to receive the digital signal and convert the digital signal into a third digital coded signal;

[0023] The second optical fiber transmitter is used to receive the third digital coded signal, convert the third digital coded signal into a second optical signal, and send the second optical signal to the first converter through the optical fiber;

[0024] The second optical fiber receiver is used to convert the first optical signal into a fourth digital coded signal;

[0025] The driving circuit is used to receive the fourth digital coded signal, convert the fourth digital coded signal into the first output signal, and send it to the transponder.

[0026] In one embodiment, the device further comprises: a third converter, a fourth converter and an output switching box; the first end of the third converter is connected to the LEU, and the second end of the third converter is connected to the first end of the fourth converter through an optical fiber; the first end of the output switching box is connected to the second end of the second converter, the second end is connected to the second end of the fourth converter, and the third end is connected to the transponder; wherein:

[0027] The output switching box is used to determine whether the output signal sent by the second converter is sent to the transponder or the output signal sent by the fourth converter is sent to the transponder, and to determine whether the second electrical signal is sent to the second converter or to the fourth converter.

[0028] In one embodiment, the device is configured with redundant dual channels, the redundant dual channels include a first channel and a second channel, the first channel includes the first converter, the second converter, the output switching box and the load matching box; the second channel includes the third converter, the fourth converter, the output switching box and the load matching box.

[0029] In one embodiment, the load matching box includes a signal non-action load and a differential load caused by a signal action; the second output signal is a load signal, wherein:

[0030] The load matching box is used to determine the signal inaction load or the differential load caused by the signal action through the third electrical signal, generate the load signal, and send the load signal to the LEU.

[0031] In one embodiment, the device further comprises: an outdoor power supply, the outdoor power supply comprising a plurality of isolation conversion modules, wherein:

[0032] The outdoor power supply is used to supply power to the second converter.

[0033] The above-mentioned interface transmission device realizes photoelectric transmission of signals by designing the first converter and the second converter, and connecting the first converter and the second converter through optical fiber, thereby increasing the transmission distance of the signal, realizing long-distance signal transmission of the transponder transmission system, and improving the versatility of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0035] FIG1 is a schematic diagram of the structure of an interface transmission device in one embodiment;

[0036] FIG2 is a schematic diagram of the structure of an interface transmission device in one embodiment;

[0037] FIG3 is a schematic diagram of the structure of an interface transmission device in one embodiment;

[0038] FIG4 is a schematic diagram of the structure of an indoor converter in one embodiment;

[0039] FIG5 is a schematic diagram of the structure of an outdoor converter in one embodiment;

[0040] FIG. 6 is a schematic diagram of the structure of an interface transmission device in an embodiment. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0042] The function of the transponder transmission system is to transmit information from the ground device to the vehicle-mounted device through the transponder. The transponder can transmit fixed (through an active transponder) or variable (through an active transponder) uplink data to the vehicle-mounted device according to application requirements. In order to solve the technical problem of limited transmission distance in the transponder transmission system in the related art, an embodiment of the present application provides an interface transmission device, which can be installed between the transponder and the ground electronic unit in the transponder transmission system to facilitate long-distance information transmission between the vehicle-mounted device and the ground device.

[0043] In an exemplary embodiment, as shown in FIG1 , an interface transmission device is provided, which includes: a first converter and a second converter, wherein the first converter is connected to the second converter via an optical fiber, wherein: the first converter is used to perform photoelectric conversion on an input signal to obtain an output signal, and transmit the output signal to the second converter via the optical fiber.

[0044] The first converter may be an indoor converter or an outdoor converter. When the first converter is an indoor converter, the second converter may be an outdoor converter; when the first converter is an indoor converter, the second converter may be an outdoor converter. The optical fiber may be a single-mode optical fiber pair.

[0045] Specifically, the interface transmission device can be installed between the transponder and the ground electronic unit in the transponder transmission system. When the first converter is an indoor converter, the input signal can be a signal sent by the LEU to the indoor converter, and the indoor converter is used to convert the input signal into an optical signal (output signal), and the indoor converter can send the optical signal to the outdoor converter through an optical fiber. In addition, the outdoor converter receives the optical signal and can perform photoelectric conversion on the optical signal to obtain an electrical signal.

[0046] When the first converter is an outdoor converter, the input signal may be a signal sent by the transponder to the outdoor converter, and the outdoor converter may perform photoelectric conversion on the output signal to obtain an optical signal, and transmit the output signal to the indoor converter via an optical fiber. In addition, the indoor converter may perform photoelectric conversion on the received optical signal to obtain an electrical signal.

[0047] In this embodiment, by designing the first converter and the second converter, and connecting the first converter and the second converter through optical fiber, photoelectric transmission of the signal is achieved, the transmission distance of the signal is increased, and long-distance signal transmission of the transponder transmission system can be realized, thereby improving the versatility of the system.

[0048] In an exemplary embodiment, as shown in FIG2 , the first converter is an indoor converter, and the second converter is an outdoor converter; the first end of the first converter is connected to the ground electronic unit LEU, and the second end is connected to the first end of the second converter through an optical fiber; the second end of the second converter is connected to the transponder; the input signal is a first electrical signal; wherein:

[0049] The first converter is used to receive the first electrical signal sent by the LEU and convert the first electrical signal into a first optical signal; the second converter is used to receive the first optical signal sent by the first converter through the optical fiber, convert the first optical signal into a first output signal, and send the first output signal to the transponder.

[0050] Specifically, the first converter may be an indoor converter, and the second converter may be an outdoor converter. When the LEU transmits information to the transponder, the indoor converter may receive an input signal sent by the LEU through the first end, and the input signal may be a first electrical signal. The indoor converter may convert the received first electrical signal to obtain a first optical signal. The second end of the indoor converter sends the first optical signal to the first end of the outdoor converter through an optical fiber. The outdoor converter performs photoelectric conversion on the received first optical signal to obtain an electrical signal; the second end sends the electrical signal as a first output signal to the transponder. The transponder responds to the output signal and sends the output signal to the corresponding ground device.

[0051] In this embodiment, the signal transmission from the LEU to the transponder is realized through the first converter and the second converter, and optical fiber transmission is adopted between the first converter and the second converter to realize long-distance communication of the signal.

[0052] In an exemplary embodiment, as shown in FIG3 , an interface transmission device is provided, the device further comprising a load matching box; the third end of the first converter is connected to the first end of the load matching box; the second end of the load matching box is connected to the LEU; the input signal is a second electrical signal, wherein:

[0053] The second converter is used to receive the second electrical signal sent by the transponder and convert the second electrical signal into a second optical signal; the first converter is used to receive the second optical signal sent by the second converter through the optical fiber and convert the second optical signal into a third electrical signal; the load matching box is used to receive the third electrical signal, process the third electrical signal to obtain a second output signal, and send the second output signal to the LEU.

[0054] Among them, the first converter is an indoor converter, and the second converter is an outdoor converter.

[0055] Specifically, when the transponder transmits information to the LEU, the first end of the second converter receives the input signal sent by the transponder. The input signal may be a second electrical signal, and the second converter performs photoelectric conversion on the second electrical signal to obtain a second optical signal, and sends the second optical signal to the second end of the first converter through the optical fiber at the first end. The first converter performs photoelectric conversion on the received second optical signal to obtain a third electrical signal, and sends the third electrical signal to the load matching box through the first end. The load matching box can match different loads based on the third electrical signal, generate corresponding load signals based on the matched loads, and determine the load signal as a second output signal. The second end of the load matching box sends the second output signal to the LEU. The LEU responds to the second output signal and sends the second output signal to the corresponding on-board device.

[0056] In this embodiment, the signal transmission from the transponder to the LEU is realized through the first converter and the second converter, and optical fiber transmission is adopted between the first converter and the second converter to realize long-distance communication of the signal.

[0057] In an exemplary embodiment, a first information transmission interface is used between the first converter and the LEU; a first information transmission interface or a second information transmission interface is used between the second converter and the transponder; a second information transmission interface is used between the first converter and the load matching box; and a second information transmission interface is used between the load matching box and the LEU.

[0058] The first signal transmission interface may be a C1 interface and a C6 interface. The second signal transmission interface may be a C4 interface. The C1 interface may be an interface for LEU to transmit uplink transponder messages to the transponder. The C4 interface is an interface for preventing LEU from performing message conversion within a specified time when the vehicle-mounted device passes through the transponder and the signal generated by the transponder. The C6 interface is an interface for providing power when LEU sends signals to the transponder.

[0059] Specifically, the first converter is driven via the C1 interface and the C6 interface, and the second converter is driven via the C4 interface.

[0060] In an exemplary embodiment, the first converter includes an isolated power supply, a conversion circuit, a first optical fiber transmitter, a first optical fiber receiver, a first controller and a load driving circuit; the first end of the isolated power supply is connected to the LEU, and the second end is connected to the first end of the conversion circuit; the second end of the conversion circuit is used to connect to the LEU; the third end is connected to the first end of the first optical fiber transmitter; the second end of the first optical fiber transmitter is connected to the second converter through an optical fiber; the first end of the first optical fiber receiver is connected to the second converter through an optical fiber, the second end is connected to the first end of the first controller, and the second end is connected to the first end of the load driving circuit; the second end of the load driving circuit is connected to the first end of the load matching box; wherein:

[0061] The conversion circuit is used to convert the first electrical signal into a first digital coded signal; the first optical fiber transmitter is used to receive the first digital coded signal sent by the conversion circuit, and convert the first digital coded signal into a first optical signal, and send the first optical signal to the second converter through the optical fiber;

[0062] A first optical fiber receiver, configured to convert the second optical signal into a second digital coded signal;

[0063] A first controller is used to receive a second digital coded signal sent by the first optical fiber receiver, and perform signal processing on the second digital coded signal to obtain a control signal;

[0064] A load driving circuit, used for receiving a control signal and performing signal processing on the control signal to obtain a third electrical signal, wherein the third electrical signal is used for enabling a load matching box to determine a load type;

[0065] Isolated power supply, used to supply power to conversion circuit and load driving circuit.

[0066] The optical fiber may be a single-mode optical fiber.

[0067] Specifically, as shown in Figure 4, Figure 4 provides a schematic diagram of the structure of the first converter. When the first converter is an indoor converter, the indoor converter can receive the input signal of the LEU and send the first optical signal to the outdoor converter (the second converter), and can also receive the second optical signal sent by the outdoor converter, and send the third electrical signal to the load matching box.

[0068] In the case where the first converter receives the input signal of the LEU and sends the first optical signal to the outdoor converter, an isolated power supply, a conversion circuit and an optical fiber transmitter can be set in the indoor converter. The isolated power supply is used to supply power to the conversion circuit. The first end of the conversion circuit can receive the input signal (C1 signal) sent by the LEU, and perform digital coding conversion on the input signal to obtain a first digital coding signal. The second end of the conversion circuit sends the first digital coding signal to the first end of the first optical fiber transmitter. The first optical fiber transmitter performs photoelectric conversion on the first digital coding signal to obtain a first optical signal, and the second end sends the first optical signal to the outdoor conversion box through a single-mode optical fiber, and the outdoor conversion box performs corresponding processing on the first optical signal.

[0069] In the case of receiving the second optical signal sent by the outdoor converter and sending the third electrical signal to the load matching box, an isolated power supply, a first optical fiber receiver, a first controller and a load driving circuit can be set in the indoor converter. The isolated power supply can be used to power the load driving circuit. The first end of the first optical fiber receiver receives the second optical signal of the outdoor conversion box through a single-mode optical fiber. The first optical fiber receiver can perform photoelectric conversion on the second optical signal to obtain a second digital coded signal, and the second end sends the second digital coded signal to the first end of the first controller. The first controller processes the second digital coded signal to obtain a control signal, and the second end sends the control signal to the first end of the load driving circuit. The load driving circuit can process the control signal to obtain a third electrical signal (C4 signal), and the second end sends the third electrical signal to the first end of the load matching box, and the load matching box can determine the corresponding load type according to the third electrical signal.

[0070] In addition, the isolated power supply is driven through the C6 interface, the conversion circuit is driven through the C1 interface, the first optical fiber transmitter is driven through the conversion circuit, the first optical fiber receiver receives the optical signal and converts it into an electrical signal for the controller to identify, and the first controller drives the load driving circuit according to the received signal.

[0071] In this embodiment, the photoelectric conversion of the signal is realized by isolating the power supply, the conversion circuit, the first optical fiber transmitter, the first optical fiber receiver, the first controller and the load driving circuit, so as to facilitate the transmission of the signal.

[0072] In an exemplary embodiment, the second converter includes a second optical fiber receiver, a driving circuit, a detection circuit, a second controller, and a second optical fiber transmitter; the first end of the second optical fiber receiver is connected to the first converter through an optical fiber, and the second end is connected to the first end of the driving circuit; the second end of the driving circuit is connected to the transponder; the first end of the detection circuit is connected to the transponder, and the second end is connected to the first end of the controller; the second end of the controller is connected to the first end of the second optical fiber transmitter; the second end of the second optical fiber transmitter is connected to the first converter through an optical fiber; wherein:

[0073] A detection circuit, used for converting the second electrical signal into a digital signal;

[0074] A controller, configured to receive a digital signal and convert the digital signal into a third digital coded signal;

[0075] a second optical fiber transmitter, configured to receive a third digital coded signal, convert the third digital coded signal into a second optical signal, and transmit the second optical signal to the first converter via an optical fiber;

[0076] a second optical fiber receiver, configured to convert the first optical signal into a fourth digital coded signal;

[0077] The driving circuit is used for receiving the fourth digital coded signal, converting the fourth digital coded signal into a first output signal, and sending the first output signal to the transponder.

[0078] Specifically, as shown in Figure 5, Figure 5 provides a schematic diagram of the structure of the second converter. When the second converter is an outdoor converter, the outdoor converter can receive the input signal of the transponder and send the second optical signal to the indoor converter (first converter), and can also receive the first optical signal sent by the indoor converter and send the first output signal to the transponder.

[0079] In the case where the outdoor converter receives the input signal of the transponder and sends the second optical signal to the indoor converter, the second converter may include at least a detection circuit, a second controller, and a second optical transmitter. The first end of the detection circuit may receive the input signal (C4 signal) sent by the transponder. The detection circuit processes the input signal to obtain a digital signal, and the second end sends the digital signal to the first end of the second controller. The second controller performs digital coding conversion on the digital signal to obtain a third digital coding signal, and the second end sends the third digital coding signal to the first end of the second optical fiber transmitter. The second optical transmitter performs photoelectric conversion on the third digital code to obtain a second optical signal, and the second end sends the second optical signal to the indoor converter via a single-mode optical fiber.

[0080] In the case of receiving the first optical signal sent by the indoor converter and sending the first output signal to the transponder, the second converter includes at least a second optical fiber receiver and a driving circuit. The first end of the second optical fiber receiver receives the first optical signal sent by the indoor converter through a single-mode optical fiber. The second optical fiber receiver performs photoelectric conversion on the first optical signal to obtain a fourth digital coded signal, and the second end sends the fourth digital coded signal to the first end of the driving circuit. The driving circuit converts the fourth digital coded signal to obtain a first output signal, and the first output signal can be (C1 signal and C6 signal), and the second end sends the first output signal to the transponder.

[0081] In addition, the C4 interface is detected by the detection circuit for identification by the second controller, and the second controller drives the second optical fiber transmitter according to the detected signal. The second optical fiber receiver receives the optical signal and converts it into an electrical signal to drive the driving circuit and generate an output switching valid signal.

[0082] In this embodiment, the photoelectric conversion of the signal is achieved through the second converter, which facilitates the transmission of the signal.

[0083] In an exemplary embodiment, as shown in FIG6 , the interface transmission device further includes: a third converter, a fourth converter and an output switching box; a first end of the third converter is connected to the LEU, and a second end of the third converter is connected to a first end of the fourth converter via an optical fiber; a first end of the output switching box is connected to a second end of the second converter, a second end is connected to a second end of the fourth converter, and a third end is connected to a transponder; wherein:

[0084] The output switching box is used to determine whether the output signal sent by the second converter is sent to the transponder or the output signal sent by the fourth converter is sent to the transponder, and determine whether the second electrical signal is sent to the second converter or to the fourth converter.

[0085] Specifically, the third converter may be an indoor converter or an outdoor converter. The fourth converter may be an indoor converter or an outdoor converter. When the third converter is an indoor converter, the fourth converter is an outdoor converter.

[0086] When the LEU transmits information to the transponder, the third converter can receive the input signal sent by the LEU through the first end. The third converter can convert the received input signal to obtain an optical signal. The second end of the third converter sends the optical signal to the first end of the fourth converter through the optical fiber. The fourth converter performs photoelectric conversion on the received optical signal to obtain an electrical signal; the second end sends the electrical signal as an output signal to the second end of the output switching box. At the same time, the first end of the output switching box can receive the first output signal sent by the second converter. The output switching box can compare the output signal with the first output signal, and send the signal that meets the preset condition as the output signal of the output switching box to the transponder. The output switching box can receive the switching signal and determine the output signal that meets the preset condition based on the switching signal. The switching signal can be determined based on the fault condition of each channel. For example, if the output signals of the second converter and the fourth converter are both faulty, the output signal of the second converter is preferentially accepted. If the output signal of the second converter fails, the switching signal generated is to receive the output signal of the fourth converter, that is, the output signal of the fourth converter is an output signal that meets the preset condition.

[0087] When the transponder transmits a signal to the LEU, the transponder can send an input signal to the third end of the output switching box, and the output switching box can determine to send the input signal to the second end of the second converter or the second end of the fourth converter based on the switching signal. If the channel where the fourth converter is located meets the preset conditions, the second end of the output switching box sends the input signal to the second end of the fourth converter. The fourth converter performs photoelectric conversion on the input signal to obtain an optical signal, and the first end sends the optical signal to the second end of the first converter. The first converter performs photoelectric conversion on the optical signal to obtain an electrical signal, and sends the electrical signal to the load matching box. The load matching box sends the electrical signal to the LEU. If the channel where the second converter is located meets the preset conditions, the specific signal transmission path has been described in detail in the above embodiment and will not be repeated here.

[0088] It should be understood that when the third converter is an indoor converter, the internal structure of the third converter is similar to the first converter in the above embodiment, and when the fourth converter is an outdoor converter, the internal structure of the fourth converter is similar to the first converter in the above embodiment, which will not be repeated here.

[0089] In this embodiment, the output switching box is used to improve the accuracy of the output signal, increase the efficiency of signal transmission, and reduce the failure rate of the signal.

[0090] In an exemplary embodiment, the device is configured with redundant dual channels, the redundant dual channels include a first channel and a second channel, the first channel includes a first converter, a second converter, an output switching box and a load matching box; the second channel includes a third converter, a fourth converter, an output switching box and a load matching box.

[0091] Specifically, as shown in FIG6 , the device is configured with redundant dual channels.

[0092] In addition, the embodiment of the present application can be configured with multiple channels such as three channels, and the output results of each channel can be judged through the output switching box, and the most accurate output result can be selected and sent to the transponder.

[0093] In this embodiment, redundant dual channels are configured to improve the accuracy of signal transmission and the efficiency of signal transmission.

[0094] In an exemplary embodiment, the load matching box includes a signal inaction load and a differential load caused by a signal action; the second output signal is a load signal, wherein: the load matching box is used to determine the signal inaction load or the differential load caused by a signal action through a third electrical signal, generate a load signal, and send the load signal to the LEU.

[0095] Specifically, the load matching box may include a signal inaction load and a differential load caused by a signal action. The first end of the load matching box may receive a third electrical signal. The load matching box determines a corresponding load type (a signal inaction load or a differential load caused by a signal action) based on the third electrical signal. The load matching box determines a corresponding load signal based on the load type. The second end of the load matching box sends the load signal to the LEU.

[0096] In an exemplary embodiment, the interface transmission device further includes: an outdoor power supply, the outdoor power supply includes a plurality of isolation conversion modules, wherein: the outdoor power supply is used to supply power to the second converter.

[0097] Specifically, the outdoor circuit may include multiple isolation conversion modules, and the isolation conversion module may be an isolated AC / DC. The input of the outdoor power supply may be realized by adding a core to the signal cable. The outdoor power supply may supply power to the detection circuit, the driving power supply and the controller of the outdoor converter.

[0098] In addition, outdoor power supply can be installed in the throat area of ​​the station.

[0099] In this embodiment, the normal operation of the outdoor converter is ensured by the outdoor power supply.

[0100] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0101] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An interface transmission device, characterized in that: The device comprises: a first converter and a second converter, wherein the first converter and the second converter are connected via an optical fiber, wherein: The first converter is used to perform photoelectric conversion on the input signal to obtain an output signal, and transmit the output signal to the second converter through the optical fiber.

2. The device according to claim 1, characterized in that The first converter is an indoor converter, and the second converter is an outdoor converter; the first end of the first converter is connected to the ground electronic unit LEU, and the second end is connected to the first end of the second converter through an optical fiber; the second end of the second converter is connected to the transponder; the input signal is a first electrical signal; wherein: The first converter is used to receive the first electrical signal sent by the LEU and convert the first electrical signal into a first optical signal; The second converter is used for receiving the first optical signal sent by the first converter through the optical fiber, converting the first optical signal into a first output signal, and sending the first output signal to the transponder.

3. The device according to claim 2, characterized in that The device further includes a load matching box; the third end of the first converter is connected to the first end of the load matching box; the second end of the load matching box is connected to the LEU; the input signal is a second electrical signal, wherein: The second converter is used to receive the second electrical signal sent by the transponder and convert the second electrical signal into a second optical signal; The first converter is used to receive the second optical signal sent by the second converter through the optical fiber, and convert the second optical signal into a third electrical signal; the load matching box is used to receive the third electrical signal, process the third electrical signal to obtain a second output signal, and send the second output signal to the LEU.

4. The device according to claim 3, characterized in that The first information transmission interface is used between the first converter and the LEU; the first information transmission interface or the second information transmission interface is used between the second converter and the transponder; The second information transmission interface is used between the first converter and the load matching box; and the second information transmission interface is used between the load matching box and the LEU.

5. The device according to claim 3, characterized in that The first converter comprises an isolated power supply, a conversion circuit, a first optical fiber transmitter, a first optical fiber receiver, a first controller and a load driving circuit; the first end of the isolated power supply is connected to the LEU, and the second end is connected to the first end of the conversion circuit; the second end of the conversion circuit is used to connect to the LEU; the third end is connected to the first end of the first optical fiber transmitter; the second end of the first optical fiber transmitter is connected to the second converter through an optical fiber; the first end of the first optical fiber receiver is connected to the second converter through an optical fiber, the second end is connected to the first end of the first controller, and the second end is connected to the first end of the load driving circuit; the second end of the load driving circuit is connected to the first end of the load matching box; wherein: The conversion circuit is used to convert the first electrical signal into a first digital coded signal; the first optical fiber transmitter is used to receive the first digital coded signal sent by the conversion circuit, and convert the first digital coded signal into a first optical signal, and send the first optical signal to the second converter through the optical fiber; The first optical fiber receiver is used to convert the second optical signal into a second digital coded signal; The first controller is used to receive the second digital coded signal sent by the first optical fiber receiver, and perform signal processing on the second digital coded signal to obtain a control signal; The load driving circuit is used to receive the control signal and perform signal processing on the control signal to obtain the third electrical signal, wherein the third electrical signal is used to enable the load matching box to determine the load type; The isolated power supply is used to supply power to the conversion circuit and the load driving circuit.

6. The device according to claim 3, characterized in that The second converter comprises a second optical fiber receiver, a driving circuit, a detection circuit, a second controller and a second optical fiber transmitter; the first end of the second optical fiber receiver is connected to the first converter through the optical fiber, and the second end is connected to the first end of the driving circuit; the second end of the driving circuit is connected to the transponder; the first end of the detection circuit is connected to the transponder, and the second end is connected to the first end of the controller; the second end of the controller is connected to the first end of the second optical fiber transmitter; the second end of the second optical fiber transmitter is connected to the first converter through the optical fiber; wherein: The detection circuit is used to convert the second electrical signal into a digital signal; The controller is used to receive the digital signal and convert the digital signal into a third digital coded signal; The second optical fiber transmitter is used to receive the third digital coded signal, convert the third digital coded signal into a second optical signal, and send the second optical signal to the first converter through the optical fiber; The second optical fiber receiver is used to convert the first optical signal into a fourth digital coded signal; The driving circuit is used to receive the fourth digital coded signal, convert the fourth digital coded signal into the first output signal, and send it to the transponder.

7. The device according to claim 3, characterized in that The device further comprises: a third converter, a fourth converter and an output switching box; the first end of the third converter is connected to the LEU, and the second end of the third converter is connected to the first end of the fourth converter via an optical fiber; the first end of the output switching box is connected to the second end of the second converter, the second end is connected to the second end of the fourth converter, and the third end is connected to the transponder; wherein: The output switching box is used to determine whether the output signal sent by the second converter is sent to the transponder or the output signal sent by the fourth converter is sent to the transponder, and to determine whether the second electrical signal is sent to the second converter or to the fourth converter.

8. The device according to claim 7, characterized in that The device is configured with redundant dual channels, and the redundant dual channels include a first channel and a second channel. The first channel includes the first converter, the second converter, the output switching box and the load matching box; the second channel includes the third converter, the fourth converter, the output switching box and the load matching box.

9. The device according to claim 3, characterized in that The load matching box includes a signal non-action load and a differential load caused by a signal action; the second output signal is a load signal, wherein: The load matching box is used to determine the signal inaction load or the differential load caused by the signal action through the third electrical signal, generate the load signal, and send the load signal to the LEU.

10. The device according to claim 1, characterized in that The device further comprises: an outdoor power supply, wherein the outdoor power supply comprises a plurality of isolation conversion modules, wherein: The outdoor power supply is used to supply power to the second converter.

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