CN119329580A - Interface transmission device - Google Patents
Interface transmission device Download PDFInfo
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- CN119329580A CN119329580A CN202411875907.2A CN202411875907A CN119329580A CN 119329580 A CN119329580 A CN 119329580A CN 202411875907 A CN202411875907 A CN 202411875907A CN 119329580 A CN119329580 A CN 119329580A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 48
- 239000013307 optical fiber Substances 0.000 claims abstract description 93
- 238000006243 chemical reaction Methods 0.000 claims abstract description 52
- 230000003287 optical effect Effects 0.000 claims description 72
- 239000000835 fiber Substances 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 11
- 238000012546 transfer Methods 0.000 claims description 8
- 230000009977 dual effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims 1
- 230000008054 signal transmission Effects 0.000 description 14
- 230000009471 action Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/028—Subscriber network interface devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0003—Details
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Abstract
本申请涉及一种接口传输装置。所述装置包括：第一转换器、第二转换器，所述第一转换器与所述第二转换器通过光纤连接，其中：所述第一转换器，用于对输入信号进行光电转换，得到输出信号，并通过所述光纤将所述输出信号传输至所述第二转换器。采用本装置能够增加信号控制系统的传输距离。
The present application relates to an interface transmission device. 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 an input signal to obtain an output signal, and transmit the output signal to the second converter via the optical fiber. The use of the device can increase the transmission distance of a signal control system.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to an interface transmission device.
Background
The railway signal control system plays a role in guaranteeing the driving safety and the transportation efficiency of a railway, and accidents such as train off-line and collision can be caused by dangerous failure of the railway signal control system. In the related art, a railway signal control system has a transponder transmission system, and a cable transmission mode is generally adopted between a transponder and a ground electronic unit (Line-side Electronic Unit, LEU) in the transponder transmission system for information interaction. However, the cable transmission mode in the related art has a certain limit on transmission distance, and the transmission of the cable transmission mode is within 2.5 km, so that the remote information interaction cannot be satisfied.
Disclosure of Invention
In view of the foregoing, it is desirable to provide an interface transmission device capable of increasing a transmission distance of a signal control system.
The application provides an interface transmission device, which comprises a first converter and a second converter, wherein the first converter is connected with the second converter through an optical fiber, and the interface transmission device comprises:
The first converter is used for performing photoelectric conversion on an input signal to obtain an output signal, and transmitting the output signal to the second converter through the optical fiber.
In one embodiment, the first converter is an indoor converter, the second converter is an outdoor converter, a first end of the first converter is connected with a ground electronic unit LEU, a second end of the first converter is connected with a first end of the second converter through an optical fiber, a second end of the second converter is connected with a transponder, and the input signal is a first electric signal, wherein:
The first converter is used for receiving the first electric signal sent by the LEU and converting the first electric signal into a first optical signal;
the second converter is used for receiving the first optical signal sent by the first converter through an optical fiber, converting the first optical signal into a first output signal and sending the first output signal to the transponder.
In one embodiment, the apparatus further comprises a load matching box, a third end of the first converter is connected to a first end of the load matching box, a second end of the load matching box is connected to the LEU, and the input signal is a second electrical signal, wherein:
The second converter is used for receiving the second electric signal sent by the transponder and converting the second electric signal into a second optical signal;
The first converter is used for receiving the second optical signal sent by the second converter through the optical fiber and converting the second optical signal into a third electrical signal, and the load matching box is used for receiving the third electrical signal, processing the third electrical signal to obtain a second output signal and sending the second output signal to the LEU.
In one embodiment, a first information transmission interface is adopted between the first converter and the LEU, and the first information transmission interface or a second information transmission interface is adopted between the second converter and the transponder;
The second information transmission interface is adopted between the first converter and the load matching box, and the second information transmission interface is adopted between the load matching box and the LEU.
In one 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, wherein a first end of the isolated power supply is connected to the LEU, a second end of the isolated power supply is connected to a first end of the conversion circuit, a second end of the conversion circuit is used for connecting to the LEU, a third end of the conversion circuit is connected to the first end of the first optical fiber transmitter, a second end of the first optical fiber transmitter is connected to the second converter through an optical fiber, a first end of the first optical fiber receiver is connected to the second converter through an optical fiber, a second end of the first optical fiber receiver is connected to a first end of the first controller, a second end of the first optical fiber receiver is connected to a first end of the load driving circuit, and a second end of the load driving circuit is connected to a first end of the load matching box, wherein:
the first optical fiber transmitter is used for receiving the first digital coding signal sent by the conversion circuit, converting the first digital coding signal into a first optical signal, and sending the first optical signal to the second converter through the optical fiber;
The first optical fiber receiver is used for converting the second optical signal into a second digital coding signal;
The first controller is configured to receive the second digital encoded signal sent by the first optical fiber receiver, and perform signal processing on the second digital encoded signal to obtain a control signal;
the load driving circuit is used for receiving the control signal and performing signal processing on the control signal to obtain the third electric signal, and the third electric signal is used for enabling the load matching box to determine a load type;
the isolated power supply is used for supplying power to the conversion circuit and the load driving circuit.
In one 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, wherein a first end of the second optical fiber receiver is connected with the first converter through the optical fiber, a second end of the second optical fiber receiver is connected with a first end of the driving circuit, a second end of the driving circuit is connected with the transponder, a first end of the detection circuit is connected with the transponder, a second end of the detection circuit is connected with the first end of the controller, a second end of the controller is connected with the first end of the second optical fiber transmitter, and a second end of the second optical fiber transmitter is connected with the first converter through the optical fiber, wherein:
The detection circuit is used for converting the second electric signal into a digital signal;
the controller is used for receiving the digital signal and converting the digital signal into a third digital coding signal;
The second optical fiber transmitter is configured to receive the third digital encoded signal, convert the third digital encoded signal into a second optical signal, and transmit the second optical signal to the first converter through the optical fiber;
The second optical fiber receiver is used for converting the first optical signal into a fourth digital coding signal;
The driving circuit is configured to receive the fourth digital encoded signal, convert the fourth digital encoded signal into the first output signal, and send the first output signal to the transponder.
In one embodiment, the device further comprises a third converter, a fourth converter and an output switching box, wherein a first end of the third converter is connected with the LEU, a second end of the third converter is connected with a first end of the fourth converter through an optical fiber, a first end of the output switching box is connected with a second end of the second converter, a second end of the output switching box is connected with a second end of the fourth converter, and a third end of the output switching box is connected with the transponder, wherein:
The output switching box is configured to determine to transmit the output signal transmitted by the second converter to the transponder or transmit the output signal transmitted by the fourth converter to the transponder, and determine to transmit the second electrical signal to the second converter or to the fourth converter.
In one embodiment, the device is configured with a redundant dual channel comprising a first channel and a second channel, the first channel comprising the first converter, the second converter, the output switching box and the load matching box, and the second channel comprising the third converter, the fourth converter, the output switching box and the load matching box.
In one embodiment, the load matching box comprises a signal non-action load and a differential load caused by signal action, and the second output signal is a load signal, wherein:
the load matching box is used for determining whether the signal does not act on the load or the differential load caused by the signal acts through the third electric signal, generating the load signal and sending the load signal to the LEU.
In one embodiment, the apparatus further comprises an outdoor power source comprising a plurality of isolated conversion modules, wherein:
the outdoor power supply is used for supplying power to the second converter.
According to the interface transmission device, the first converter and the second converter are designed, and the first converter and the second converter are connected through the optical fiber, so that photoelectric transmission of signals is realized, the transmission distance of the signals is increased, long-distance signal transmission of a transponder transmission system can be realized, and the universality of the system is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings that are needed in the description of the embodiments of the present application or the related technologies will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other related drawings may be obtained according to these drawings without inventive effort to those of ordinary skill in the art.
FIG. 1 is a schematic diagram of an interface transmission device according to an embodiment;
FIG. 2 is a schematic diagram of an interface transmission device according to an embodiment;
FIG. 3 is a schematic diagram of an interface transmission device according to an embodiment;
FIG. 4 is a schematic diagram of an indoor converter according to an embodiment;
fig. 5 is a schematic structural view of an outdoor converter according to an embodiment;
Fig. 6 is a schematic structural diagram of an interface transmission device in one embodiment.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
The transponder transmission system may be used to transmit information from the surface device to the vehicle device via a transponder, which may transmit fixed (via the active transponder) or variable (via the active transponder) uplink data to the vehicle device depending on the application requirements. In order to solve the technical problem that a transmission distance of a transponder transmission system in the related art is limited, an embodiment of the application provides an interface transmission device which can be installed between a transponder and a ground electronic unit in the transponder transmission system so as to realize remote information transmission between vehicle-mounted equipment and ground equipment.
In an exemplary embodiment, as shown in fig. 1, an interface transmission device is provided, where the device includes 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 configured to perform photoelectric conversion on an input signal to obtain an output signal, and transmit the output signal to the second converter through the optical fiber.
The first converter may be an indoor converter or an outdoor converter. The second converter may be an outdoor converter when the first converter is an indoor converter, and the second converter may be an outdoor converter when the first converter is an indoor converter. The optical fibers may be a single mode fiber pair.
In particular, the interface transmission device may be installed between a transponder in the transponder transmission system and a ground electronics unit. When the first converter is an indoor converter, the input signal may be a signal transmitted from the LEU to the indoor converter, the indoor converter is configured to convert the input signal into an optical signal (output signal), and the indoor converter may transmit the optical signal to the outdoor converter through the 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.
When the first converter is an outdoor converter, the input signal may be a signal sent to the outdoor converter by the transponder, 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 through an optical fiber. In addition, the indoor converter can perform photoelectric conversion on the received optical signal to obtain an electrical signal.
In this embodiment, by designing the first converter and the second converter and connecting the first converter and the second converter through the optical fiber, photoelectric transmission of signals is realized, a transmission distance of signals is increased, remote signal transmission of a transponder transmission system can be realized, and universality of the system is improved.
In an exemplary embodiment, as shown in fig. 2, the first converter is an indoor converter, the second converter is an outdoor converter, a first end of the first converter is connected to the ground electronic unit LEU, a second end of the first converter is connected to a first end of the second converter through an optical fiber, a second end of the second converter is connected to a transponder, and the input signal is a first electrical signal, wherein:
The first converter is used for receiving the first electric signal sent by the LEU and converting the first electric signal into a first optical signal, and the second converter is used for receiving the first optical signal sent by the first converter through an optical fiber, converting the first optical signal into a first output signal and sending the first output signal to the transponder.
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, which may be a first electrical signal, transmitted by the LEU via the first end. The indoor converter can convert the received first electric signal to obtain a first optical signal. The second end of the indoor switch transmits the first optical signal to the first end of the outdoor switch via an optical fiber. The outdoor converter performs photoelectric conversion on the received first optical signal to obtain an electric signal, and the second end sends the electric signal to the transponder as a first output signal. The transponder responds to the output signal and transmits the output signal to the corresponding surface equipment.
In this embodiment, signal transmission from the LEU to the transponder is achieved through the first converter and the second converter, and meanwhile, optical fiber transmission is adopted between the first converter and the second converter, so that long-distance communication of signals is achieved.
In an exemplary embodiment, as shown in fig. 3, there is provided an interface transmission device, further comprising a load matching box, a third terminal of the first converter being connected to a first terminal of the load matching box, a second terminal of the load matching box being connected to the LEU, and the input signal being a second electrical signal, wherein:
The second converter is used for receiving a second electric signal sent by the transponder and converting the second electric signal into a second optical signal; the load matching box is used for receiving the third electric signal, processing the third electric signal to obtain a second output signal and sending the second output signal to the LEU.
The first converter is an indoor converter, and the second converter is an outdoor converter.
In particular, the first end of the second converter receives an input signal transmitted by the transponder when the transponder transmits information to the LEU. 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, where the second optical signal is sent 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 electric signal, and sends the third electric signal to the load matching box through the first end. The load matching box can match different loads based on the third electric signal, generate corresponding load signals based on the matched loads, and determine the load signals as second output signals. The second end of the load matching box sends a second output signal to the LEU. The LEU responds to the second output signal and sends the second output signal to the corresponding vehicle-mounted device.
In this embodiment, signal transmission from the transponder to the LEU is achieved through the first converter and the second converter, and meanwhile, optical fiber transmission is adopted between the first converter and the second converter, so that long-distance communication of signals is achieved.
In one exemplary embodiment, a first information transfer interface is employed between the first converter and the LEU, a first information transfer interface or a second information transfer interface is employed between the second converter and the transponder, a second information transfer interface is employed between the first converter and the load matching box, and a second information transfer interface is employed between the load matching box and the LEU.
The first signal transmission interface may be a C1 interface and a C6 interface. The second signal transmission interface may be a C4 interface, and the C1 interface may be an interface for transmitting an uplink transponder message from the LEU to the transponder, where the C4 interface is an interface for preventing the LEU from performing a message conversion during a period when the vehicle device passes through the transponder, by the transponder. The C6 interface is the interface that provides power when the LEU sends a signal to the transponder.
Specifically, the first converter is driven through the C1 interface and the C6 interface. The second converter is driven via the C4 interface.
In one exemplary embodiment, the first converter comprises an isolated power supply, a conversion circuit, a first fiber optic transmitter, a first fiber optic receiver, a first controller, and a load driving circuit, wherein a first end of the isolated power supply is connected to the LEU, a second end of the isolated power supply is connected to a first end of the conversion circuit, a second end of the conversion circuit is connected to the LEU, a third end of the conversion circuit is connected to the first end of the first fiber optic transmitter, a second end of the first fiber optic transmitter is connected to the second converter via an optical fiber, a first end of the first fiber optic receiver is connected to the second converter via an optical fiber, a second end of the first fiber optic receiver is connected to the first end of the first controller, a second end of the load driving circuit is connected to the first end of the load driving circuit, and a second end of the load driving circuit is connected to the first end of the load matching box, wherein:
the first optical fiber transmitter is used for receiving the first digital coded signal sent by the conversion circuit, converting the first digital coded signal into a first optical signal and sending the first optical signal to the second converter through an optical fiber;
a first fiber optic receiver for converting the second optical signal into a second digitally encoded signal;
the first controller is used for receiving the second digital coding signal sent by the first optical fiber receiver, and performing signal processing on the second digital coding signal to obtain a control signal;
the load driving circuit is used for receiving the control signal and performing signal processing on the control signal to obtain a third electric signal, and the third electric signal is used for enabling the load matching box to determine the load type;
And the isolation power supply is used for supplying power to the conversion circuit and the load driving circuit.
Wherein the optical fiber may be a single mode optical fiber.
Specifically, as shown in fig. 4, fig. 4 provides a schematic structural diagram of the first converter. When the first converter is an indoor converter, the indoor converter may receive an input signal of the LEU and transmit a first optical signal to the outdoor converter (second converter), and may also receive a second optical signal transmitted by the outdoor converter and transmit a third electrical signal to the load matching box.
In the case where the first converter receives an input signal of the LEU and transmits the first optical signal to the outdoor converter, an isolated power supply, a conversion circuit, and an optical fiber transmitter may be disposed within the indoor converter. The isolated power supply is used to power the conversion circuit. The first end of the conversion circuit may receive an input signal (C1 signal) sent by the LEU, and digitally encode and convert the input signal to obtain a first digitally encoded signal. The second end of the conversion circuit transmits the first digitally encoded signal to the first end of the first fiber optic transmitter. The first optical fiber transmitter performs photoelectric conversion on the first digital coding signal to obtain a first optical signal, the second end transmits 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.
In the case of receiving the second optical signal transmitted from the outdoor converter and transmitting the third electrical signal to the load matching box, the isolated power supply, the first optical fiber receiver, the first controller, and the load driving circuit may be provided in the indoor converter. The isolated power supply may be used to power the load drive circuit. The first end of the first optical fiber receiver receives a 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 coding signal, and the second end sends the second digital coding signal to the first end of the first controller. The first controller processes the second digital code 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 electric signal (C4 signal), the second end sends the third electric 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 electric signal.
In addition, the isolation 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 optical signals and converts the optical signals into electric signals for identification by the controller, and the first controller drives the load driving circuit according to the received signals.
In this embodiment, photoelectric conversion of signals is achieved through the isolation power supply, the conversion circuit, the first optical fiber transmitter, the first optical fiber receiver, the first controller and the load driving circuit, so that signal transmission is facilitated.
In one exemplary embodiment, the second transducer comprises a second fiber optic receiver, a drive circuit, a detection circuit, a second controller, and a second fiber optic transmitter, wherein a first end of the second fiber optic receiver is connected to the first transducer by an optical fiber, a second end is connected to a first end of the drive circuit, a second end of the drive circuit is connected to the transponder, a first end of the detection circuit is connected to the transponder, a second end of the controller is connected to a first end of the second fiber optic transmitter, and a second end of the second fiber optic transmitter is connected to the first transducer by an optical fiber, wherein:
A detection circuit for converting the second electrical signal into a digital signal;
a controller for receiving the digital signal and converting the digital signal into a third digital encoded signal;
The second optical fiber transmitter is used for receiving the third digital coding signal, converting the third digital coding signal into a second optical signal and transmitting the second optical signal to the first converter through an optical fiber;
A second fiber optic receiver for converting the first optical signal to a fourth digitally encoded signal;
The driving circuit is used for receiving the fourth digital coding signal, converting the fourth digital coding signal into the first output signal and transmitting the first output signal to the transponder.
Specifically, as shown in fig. 5, fig. 5 provides a schematic structural diagram of the second converter. When the second converter is an outdoor converter, the outdoor converter may receive an input signal of the transponder and transmit a second optical signal to the indoor converter (the first converter), and may also receive a first optical signal transmitted by the indoor converter and transmit a first output signal to the transponder.
In case the outdoor converter receives an input signal of the transponder and transmits a second optical signal to the indoor converter, the second converter may comprise at least a detection circuit, a second controller and a second optical transmitter. The first end of the detection circuit may receive an input signal (C4 signal) transmitted by the transponder. The detection circuit performs signal processing on 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 code conversion on the digital signal to obtain a third digital code signal, and the second end sends the third digital code signal to the first end of the second optical fiber transmitter. The second light transmitter performs photoelectric conversion on the third digital code to obtain a second light signal, and the second end transmits the second light signal to the indoor converter through a single-mode fiber.
In the case of receiving the first optical signal transmitted by the indoor converter and transmitting the first output signal to the transponder, the second converter comprises 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 coding signal, and the second end sends the fourth digital coding signal to the first end of the driving circuit. The driving circuit converts the fourth digital code signal to obtain a first output signal, wherein the first output signal can be (a C1 signal and a C6 signal), and the second end sends the first output signal to the transponder.
In addition, the C4 interface is detected by the detection circuit for being identified by a second controller, the second controller drives a second optical fiber transmitter according to the detected signal, and the second optical fiber receiver receives the optical signal, converts the optical signal into an electric signal to drive the driving circuit and generates an output switching effective signal.
In this embodiment, the second converter is used to implement photoelectric conversion of signals, so as to facilitate signal transmission.
In an exemplary embodiment, as shown in fig. 6, the interface transmission device further includes a third converter, a fourth converter, and an output switching box, wherein a first end of the third converter is connected to the LEU, a second end of the third converter is connected to a first end of the fourth converter through 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 the transponder, wherein:
an output switching box for determining whether to send the output signal sent by the second transducer to the transponder or the output signal sent by the fourth transducer to the transponder and determining whether to send the second electrical signal to the second transducer or to the fourth transducer.
In particular, 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.
The third transducer may receive an input signal transmitted by the LEU through the first end when the LEU transmits information to the transponder. The third converter may convert the received input signal to obtain an optical signal. The second end of the third converter transmits the optical signal to the first end of the fourth converter via an optical fiber. The fourth converter performs photoelectric conversion on the received optical signal to obtain an electric signal, and the second end sends the electric signal to the second end of the output switching box as an output signal. Meanwhile, the first end of the output switching box may receive the first output signal transmitted by the second converter. The output switching box can compare the output signal with the first output signal, and the signal meeting the preset condition is used as the output signal of the output switching box to be sent to the transponder. The output switching box may receive the switching signal, and determine an output signal satisfying a preset condition based on the switching signal. The switching signal may be determined based on a 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, and if the output signal of the second converter is faulty, the generated switching signal is the output signal of the fourth converter, that is, the output signal of the fourth converter is the output signal satisfying the preset condition.
When the transponder transmits a signal to the LEU, the transponder may send an input signal to a third terminal of the output switching box, which may determine to send the input signal to the second terminal of the second converter or the second terminal of the fourth converter based on the switching signal. And if the channel where the fourth converter is located meets the preset condition, the second end of the output switching box sends an 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 electric signal, and sends the electric signal to the load matching box. The load matching box sends an electrical signal to the LEU. If the channel in which the second converter is located meets the preset condition, the specific signal transmission path is described in detail in the above embodiment, which is not described herein again.
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, and will not be repeated here.
In this embodiment, the output switching box is output, so that the accuracy of the output signal is improved, the efficiency of signal transmission is increased, and the failure rate of the signal is reduced.
In one exemplary embodiment, an apparatus configures a redundant dual channel, the redundant dual channel including a first converter, a second converter, an output switching box, and a load matching box, and a second channel including a third converter, a fourth converter, an output switching box, and a load matching box.
Specifically, as shown in fig. 6, the apparatus configures a redundant dual channel.
In addition, the embodiment of the application can be configured with a plurality of channels such as three channels, the output result of each channel is judged through the output switching box, and the most accurate output result is selected and sent to the transponder.
In the embodiment, the accuracy of signal transmission is improved and the efficiency of signal transmission is improved by configuring redundant dual channels.
In one exemplary embodiment, the load matching box includes a signal non-acting load and a differential load caused by signal action, and the second output signal is a load signal, wherein the load matching box is configured to determine the signal non-acting load or the differential load caused by signal action from the third electrical signal, generate the load signal, and send the load signal to the LEU.
In particular, the load matching box may include a signal non-action 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 the corresponding load type (signal non-action load or differential load caused by 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 a load signal to the LEU.
In one exemplary embodiment, the interface transmission device further comprises an outdoor power source comprising a plurality of isolated conversion modules, wherein the outdoor power source is configured to provide power to the second converter.
In particular, the outdoor circuit may include a plurality of isolated conversion modules, which may be isolated AC/DC. The input of the outdoor power supply can be realized by adding a wire core through a signal cable. The outdoor power source may supply power to the detection circuit of the outdoor converter, the driving power source, and the controller.
In addition, the outdoor power source may be provided in a throat area of the station.
In this embodiment, the normal operation of the outdoor converter is ensured by the outdoor power supply.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the present application.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.
Claims (10)
1. An interface transmission device is characterized by comprising a first converter and a second converter, wherein the first converter is connected with the second converter through an optical fiber, and the interface transmission device comprises:
The first converter is used for performing photoelectric conversion on an input signal to obtain an output signal, and transmitting the output signal to the second converter through the optical fiber.
2. The apparatus of claim 1, wherein the first transducer is an indoor transducer and the second transducer is an outdoor transducer, wherein a first end of the first transducer is connected to a surface electronics unit LEU and a second end of the first transducer is connected to a first end of the second transducer via an optical fiber, wherein a second end of the second transducer is connected to a transponder, wherein the input signal is a first electrical signal, wherein:
the first converter is used for receiving the first electric signal sent by the LEU and converting the first electric signal into a first optical signal;
the second converter is used for receiving the first optical signal sent by the first converter through an optical fiber, converting the first optical signal into a first output signal and sending the first output signal to the transponder.
3. The apparatus of claim 2, further comprising a load-matching box, a third terminal of the first converter connected to a first terminal of the load-matching box, a second terminal of the load-matching box connected to the LEU, the input signal being a second electrical signal, wherein:
The second converter is used for receiving the second electric signal sent by the transponder and converting the second electric signal into a second optical signal;
The first converter is used for receiving the second optical signal sent by the second converter through the optical fiber and converting the second optical signal into a third electrical signal, and the load matching box is used for receiving the third electrical signal, processing the third electrical signal to obtain a second output signal and sending the second output signal to the LEU.
4. The apparatus of claim 3, wherein a first information transfer interface is employed between the first transducer and the LEU, and wherein either the first information transfer interface or a second information transfer interface is employed between the second transducer and the transponder;
The second information transmission interface is adopted between the first converter and the load matching box, and the second information transmission interface is adopted between the load matching box and the LEU.
5. The apparatus of claim 3, wherein the first converter comprises an isolated power supply, a conversion circuit, a first fiber optic transmitter, a first fiber optic receiver, a first controller, and a load drive circuit, wherein a first end of the isolated power supply is connected to the LEU, a second end of the isolated power supply is connected to a first end of the conversion circuit, a second end of the conversion circuit is connected to the LEU, a third end of the conversion circuit is connected to the first end of the first fiber optic transmitter, a second end of the first fiber optic transmitter is connected to the second converter via an optical fiber, a first end of the first fiber optic receiver is connected to the second converter via an optical fiber, a second end of the first fiber optic receiver is connected to a first end of the first controller, a second end of the isolated power supply is connected to a first end of the load drive circuit, and a second end of the load drive circuit is connected to a first end of the load matching box, wherein:
the first optical fiber transmitter is used for receiving the first digital coding signal sent by the conversion circuit, converting the first digital coding signal into a first optical signal, and sending the first optical signal to the second converter through the optical fiber;
The first optical fiber receiver is used for converting the second optical signal into a second digital coding signal;
The first controller is configured to receive the second digital encoded signal sent by the first optical fiber receiver, and perform signal processing on the second digital encoded signal to obtain a control signal;
the load driving circuit is used for receiving the control signal and performing signal processing on the control signal to obtain the third electric signal, and the third electric signal is used for enabling the load matching box to determine a load type;
the isolated power supply is used for supplying power to the conversion circuit and the load driving circuit.
6. The apparatus of claim 3, wherein the second transducer comprises a second fiber optic receiver, a drive circuit, a detection circuit, a second controller, and a second fiber optic transmitter, wherein a first end of the second fiber optic receiver is coupled to the first transducer via the optical fiber and a second end is coupled to the first end of the drive circuit, wherein a second end of the drive circuit is coupled to the transponder, wherein a first end of the detection circuit is coupled to the transponder and a second end is coupled to the first end of the controller, wherein a second end of the controller is coupled to the first end of the second fiber optic transmitter, wherein a second end of the second fiber optic transmitter is coupled to the first transducer via the optical fiber, wherein:
The detection circuit is used for converting the second electric signal into a digital signal;
the controller is used for receiving the digital signal and converting the digital signal into a third digital coding signal;
The second optical fiber transmitter is configured to receive the third digital encoded signal, convert the third digital encoded signal into a second optical signal, and transmit the second optical signal to the first converter through the optical fiber;
The second optical fiber receiver is used for converting the first optical signal into a fourth digital coding signal;
The driving circuit is configured to receive the fourth digital encoded signal, convert the fourth digital encoded signal into the first output signal, and send the first output signal to the transponder.
7. The apparatus of claim 3, further comprising a third converter, a fourth converter, and an output switching box, wherein a first end of the third converter is connected to the LEU, a second end of the third converter is connected to the first end of the fourth converter via an optical fiber, wherein a first end of the output switching box is connected to the second end of the second converter, wherein a second end is connected to the second end of the fourth converter, and wherein a third end is connected to the transponder, wherein:
The output switching box is configured to determine to transmit the output signal transmitted by the second converter to the transponder or transmit the output signal transmitted by the fourth converter to the transponder, and determine to transmit the second electrical signal to the second converter or to the fourth converter.
8. The apparatus of claim 7, wherein the apparatus configures a redundant dual channel comprising a first channel and a second channel, the first channel comprising the first converter, the second converter, the output switching box, and the load matching box, the second channel comprising the third converter, the fourth converter, the output switching box, and the load matching box.
9. The apparatus of claim 3, wherein the load-matching box comprises a signal-inactivity load and a differential load resulting from signal activity, and wherein the second output signal is a load signal, wherein:
the load matching box is used for determining whether the signal does not act on the load or the differential load caused by the signal acts through the third electric signal, generating the load signal and sending the load signal to the LEU.
10. The apparatus of claim 1, further comprising an outdoor power source comprising a plurality of isolated switching modules, wherein:
the outdoor power supply is used for supplying power to the second converter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411875907.2A CN119329580A (en) | 2024-12-19 | 2024-12-19 | Interface transmission device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411875907.2A CN119329580A (en) | 2024-12-19 | 2024-12-19 | Interface transmission device |
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| KR20010065411A (en) * | 1999-12-29 | 2001-07-11 | 윤종용 | In-line repeating system using optic transponders |
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| CN113346964A (en) * | 2021-07-06 | 2021-09-03 | 沈阳铁路信号有限责任公司 | Outdoor LEU test system and implementation method |
| CN215990811U (en) * | 2021-08-10 | 2022-03-08 | 同济大学 | Photoelectric composite ground electronic unit |
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2024
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010065411A (en) * | 1999-12-29 | 2001-07-11 | 윤종용 | In-line repeating system using optic transponders |
| CN207995082U (en) * | 2018-03-08 | 2018-10-19 | 河南蓝信科技有限责任公司 | Subway active balise monitors system |
| CN209535112U (en) * | 2018-12-26 | 2019-10-25 | 上海铁路通信有限公司 | A kind of trackside electronic unit remote control equipment |
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| CN215990811U (en) * | 2021-08-10 | 2022-03-08 | 同济大学 | Photoelectric composite ground electronic unit |
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