Optical fiber repeater remote terminal

Abstract

The utility model relates to the technical field of communication equipment, in particular to a far-end machine of an optical fiber repeater. The optical fiber repeater far-end machine comprises a liquid crystal operation terminal, a train modulation signal processing module and a main control module. The liquid crystal operation terminal comprises a touch screen, and the touch screen provides an interaction interface for interaction between the far-end machine and an operator. The column modulation signal processing module comprises a multiplexer, an analog column modulation radio frequency unit, a digital column modulation radio frequency unit and a photoelectric conversion unit and is used for bidirectional amplification and control of wireless column modulation uplink and downlink electric signals, the photoelectric conversion unit is used for being electrically connected with a near-end machine through an optical fiber, and the multiplexer is electrically connected with an antenna through a feeder line. The remote terminal provided by the utility model can be effectively compatible with digital column modulation and analog column modulation, and can ensure that new standard digital column modulation points and traditional analog column modulation points work in a duplex mode at the same time and do not influence each other.

Description

TECHNICAL FIELD

[0001] The utility model relates to communication equipment technical field, especially a kind of optical fiber repeater far-end machine. BACKGROUND

[0002] At present, the wireless communication of 450M analog system and Global System for Mobile Communications-Railway (GSM-R) system is mainly used in the wireless train dispatching system of China railway. With the development of technology, professional wireless communication has changed from analog system to digital system, and the 450MHz frequency band used by railway will be withdrawn, and digital wireless communication frequency points are allocated to railway wireless communication in 400MHz frequency band. The railway wireless train dispatching system is being upgraded to support 400MHz digital system, but the original 450MHz analog system still needs to be compatible during the transition period.

[0003] The current far-end machine is used as signal relay equipment, and in the process of adjusting other wireless communication services of 450MHz frequency band to 400MHz frequency band, in order to ensure the normal operation of railway transportation, the original 450MHz wireless communication service cannot be directly disconnected, and a far-end machine capable of supporting 400MHz and 450MHz frequency band equipment compatibility is needed to realize signal reinforcement in the field of railway wireless train dispatching communication along the line. However, the existing far-end machine can only support 400MHz or 450MHz frequency band signal. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of optical fiber repeater far-end machine to solve the problem that far-end machine can only support 400MHz or 450MHz frequency band signal in prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model discloses a kind of optical fiber repeater far-end machine, including the machine body installed in station section, and liquid crystal operation terminal, train dispatching signal processing module and main control module are set on the machine body;

[0007] The liquid crystal operation terminal is electrically connected with the main control module, and the liquid crystal operation terminal includes touch screen, the touch screen provides the interactive interface of the optical fiber repeater far-end machine and operator interaction, and the interactive interface includes state / parameter inquiry area and parameter configuration area;

[0008] The column adjustment signal processing module comprises a multiplexer, an analog column adjustment radio frequency unit, a digital column adjustment radio frequency unit and an optical-electric conversion unit, the optical-electric conversion unit, the main control module, the analog column adjustment radio frequency unit and the multiplexer are sequentially electrically connected, for bidirectional amplification and control of wireless column adjustment uplink and downlink analog electric signals, the optical-electric conversion unit, the main control module, the digital column adjustment radio frequency unit and the multiplexer are sequentially electrically connected, for bidirectional amplification and control of wireless column adjustment uplink and downlink digital electric signals, the optical-electric conversion unit is electrically connected with a near-end machine of a fiber optical repeater, and the multiplexer is electrically connected with an antenna through a feeder.

[0009] Optionally, the analog column adjustment radio frequency unit and the digital column adjustment radio frequency unit each comprise an up-converter and a down-converter, the up-converter is electrically connected with the multiplexer, for uplink input and output of 400MHz frequency band signals or 450MHz frequency band signals, and the down-converter is electrically connected with the multiplexer, for downlink input and output of 400MHz frequency band signals or 450MHz frequency band signals.

[0010] Optionally, the main control module comprises a main controller and a backup controller, the main controller and the backup controller are redundantly connected, and the main controller and the backup controller constitute a control structure of duplex hot backup.

[0011] Optionally, the remote machine of the fiber optical repeater further comprises a power supply module, the power supply module is electrically connected with the main control module, for power supply of the main control module, the liquid crystal operation terminal and the column adjustment signal processing module.

[0012] Optionally, the power supply module comprises a main power supply unit and a backup power supply unit, the main power supply unit and the backup power supply unit are respectively electrically connected with the main control module, for switching the backup power supply unit to supply power to the main control module, the liquid crystal operation terminal and the column adjustment signal processing module after power failure of the main power supply unit.

[0013] Optionally, the remote machine of the fiber optical repeater further comprises an environment monitoring module, the environment monitoring module comprises temperature sensors, humidity sensors, access control sensors and water immersion sensors which are distributed in a station interval, the temperature sensors, the humidity sensors, the access control sensors and the water immersion sensors are respectively electrically connected with the main control module, so that operation state data monitored by the environment monitoring module is transmitted to the main control module.

[0014] Optionally, the remote machine of the fiber optical repeater further comprises a leak cable monitoring module, the leak cable monitoring module comprises a plurality of monitoring sensors which are distributed on leak cables, and the plurality of monitoring sensors are electrically connected with the main control module, so that operation state data monitored by the leak cable monitoring module is transmitted to the main control module.

[0015] Optionally, the optical fiber repeater remote machine further comprises a parameter detection module, the parameter detection module comprises a plurality of performance parameter detection sensors, the plurality of performance parameter detection sensors are electrically connected with the main control module, and the parameter detection module is used for monitoring and acquiring operation state data of the optical fiber repeater remote machine and transmitting the monitored operation state data to the main control module.

[0016] Compared with the prior art, the optical fiber repeater remote machine provided in the embodiment of the utility model has the beneficial effects that:

[0017] By setting the liquid crystal operation terminal, the column adjustment signal processing module and the main control module, a multi-frequency duplex working mode is adopted, the analog column adjustment radio frequency unit corresponds to 450M analog column adjustment, and the digital column adjustment radio frequency unit corresponds to 400M digital column adjustment, a multiplexer is used for separation and synthesis of four uplink and downlink signals of 400M digital column adjustment and 450M analog column adjustment, the remote machine restores the optical signal transmitted by the near-end machine through the optical fiber into wireless column adjustment electrical signals and amplifies the wireless column adjustment electrical signals through the optical-electric conversion unit, and then the wireless column adjustment electrical signals are transmitted through the antenna or the leaky cable, and the interval coverage is completed; meanwhile, the interval wireless column adjustment electrical signals received through the antenna or the leaky cable are converted into optical signals by the optical-electric conversion unit and transmitted to the near-end machine. That is, the remote machine of the utility model can process the signals of digital wireless column adjustment and analog wireless column adjustment at the same time, thereby effectively compatible with digital column adjustment and analog column adjustment, and the new standard digital column adjustment frequency point and the traditional analog column adjustment frequency point can be guaranteed to work at the same time and not affect each other. In addition, by using the liquid crystal operation terminal, a notebook computer is not needed, and the remote machine can be controlled and configured in two-way column adjustment only by touching the screen, so that the operators near the optical fiber repeater remote machine can also directly remotely set the equipment parameters and query the equipment state / parameters, thereby providing great convenience for the application of the optical fiber repeater remote machine. BRIEF DESCRIPTION OF DRAWINGS

[0018] The technical scheme of the utility model will be further explained in detail below with reference to the drawings and embodiments, and in the drawings:

[0019] Figure 1 The whole structure schematic block diagram of the optical fiber repeater remote machine provided in the embodiment of the utility model is shown in the figure;

[0020] Figure 2 The structure schematic block diagram of power supply and monitoring of the optical fiber repeater remote machine provided in the embodiment of the utility model is shown in the figure;

[0021] Figure 3 The structure schematic block diagram of the column adjustment system provided in the embodiment of the utility model is shown in the figure.

[0022] The various marks in the drawings represent the following:

[0023] 1, body; 11, liquid crystal operation terminal; 12, column adjustment signal processing module; 121, multiplexer; 122, analog column adjustment radio frequency unit; 123, digital column adjustment radio frequency unit; 124, photoelectric conversion unit; 13, main control module; 131, main controller; 132, backup controller; 14, power module; 141, main power supply unit; 142, backup power supply unit; 15, dynamic ring monitoring module; 151, temperature sensor; 152, humidity sensor; 153, access control sensor; 154, water immersion sensor; 16, cable leakage monitoring module; 17, parameter detection module; 2, near-end machine; 3, network management center; 31, network management operation terminal; 32, network management server; 33, network management duplex terminal. DETAILED DESCRIPTION

[0024] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. Now, the preferred embodiments of the present application will be described in detail with reference to the drawings.

[0025] The utility model discloses a kind of optical fiber repeater far-end machine, including the body 1 of being installed in station interval, and liquid crystal operation terminal 11, column adjustment signal processing module 12 and main control module 13 being set on body 1. Liquid crystal operation terminal 11 is electrically connected with main control module 13, and liquid crystal operation terminal 11 includes touch screen. Touch screen provides the interactive interface of optical fiber repeater far-end machine and operator interaction, and interactive interface includes state / parameter inquiry area and parameter configuration area. Column adjustment signal processing module 12 includes multiplexer 121, analog column adjustment radio frequency unit 122, digital column adjustment radio frequency unit 123 and photoelectric conversion unit 124. Photoelectric conversion unit 124, main control module 13, analog column adjustment radio frequency unit 122 and multiplexer 121 are sequentially electrically connected, for wireless column adjustment uplink and downlink analog electric signal bidirectional amplification and control. Photoelectric conversion unit 124, main control module 13, digital column adjustment radio frequency unit 123 and multiplexer 121 are sequentially electrically connected, for wireless column adjustment uplink and downlink digital electric signal bidirectional amplification and control. Photoelectric conversion unit 124 is used to be electrically connected with near-end machine 2 by optical fiber, and multiplexer 121 is electrically connected with antenna by feeder.

[0026] Through the implementation of the above-mentioned optical fiber repeater remote machine embodiment, a multi-frequency duplex working mode is adopted, the analog column modulation radio frequency unit 122 corresponds to 450M analog column modulation, and the digital column modulation radio frequency unit 123 corresponds to 400M digital column modulation, through the independent operation of the analog column modulation radio frequency unit 122 and the digital column modulation radio frequency unit 123, the uplink input and downlink output of 450M analog column modulation can be carried out at the same time as the uplink input and downlink output of 400M digital column modulation. And the multiplexer 121 is used for the separation and synthesis of a total of four uplink and downlink signals of 400M digital column modulation and 450M analog column modulation. The body 1 of the optical fiber repeater remote machine is preferably installed in the station section, and the optical signal transmitted by the near-end machine 2 through the optical fiber is restored to a wireless column modulation electrical signal and amplified by the photoelectric conversion unit 124, and then transmitted through the antenna, completing the section coverage; at the same time, the section wireless column modulation electrical signal received through the antenna can also be converted into an optical signal by the photoelectric conversion unit 124 and transmitted to the near-end machine 2. The main control module 13 is a core control module for controlling the operation of each hardware. That is, the optical fiber repeater remote machine of the utility model can simultaneously process the signals of digital wireless column modulation and analog wireless column modulation through independent radio frequency modules, so as to better compatible digital column modulation and analog column modulation, and can ensure that the new standard digital column modulation frequency point and the traditional analog column modulation frequency point can work simultaneously and do not affect each other. Preferably, when the digital train is dispatched, the working frequency is 413.7±0.5MHz (station→locomotive) / 403.7±0.5MHz (locomotive→station), or 423.2±0.5MHz (station→locomotive) / 413.2±0.5MHz (locomotive→station); when the analog train is dispatched, the working frequency is 458±1MHz and 468±1MHz (station→locomotive) / 458M±1MHz (locomotive→station). In addition, compared with the traditional remote machine which needs to be externally connected with a notebook computer, the optical fiber repeater remote machine of the utility model embodiment utilizes the integrated liquid crystal operation terminal 11 on the body 1, and the operator only needs to pass through the touch screen on the body 1 to quickly control and configure the bidirectional column modulation of the optical fiber repeater remote machine, including but not limited to state / parameter query and parameter configuration, so that the communication operation of the whole optical fiber repeater remote machine is more flexible and convenient.

[0027] Further, the analog column modulation radio frequency unit 122 and the digital column modulation radio frequency unit 123 each include an up-converter and a down-converter. The up-converter is electrically connected with the multiplexer 121 and is used for uplink input and downlink output of 400MHz frequency band signals or 450MHz frequency band signals. The down-converter is electrically connected with the multiplexer 121 and is used for downlink input and output of 400MHz frequency band signals or 450MHz frequency band signals.

[0028] Through the implementation of the above-mentioned embodiment of the optical fiber repeater remote machine, the upconverter is used to convert the low-frequency or intermediate-frequency baseband signal into a high-frequency radio frequency signal, so that the signal can be transmitted over a long distance while reducing the interference of the signal on the surrounding environment. And the downconverter is used to convert the high-frequency radio frequency signal back to the low-frequency or intermediate-frequency baseband signal, so as to facilitate signal processing and further data demodulation. By electrically connecting the upconverter and the downconverter with the multiplexer 121, multiplexing and separation of multiple signals are realized to allow transmission of multiple different signals in the same frequency band, thereby improving the utilization rate of the frequency spectrum. The use of the upconverter and the downconverter enables the analog column modulation radio frequency unit 122 and the digital column modulation radio frequency unit 123 to adapt to different frequency bands, such as the upconverter and the downconverter of the analog column modulation radio frequency unit 122 being used for the uplink input and the downlink output of the 450MHz frequency band signal, respectively, to realize the signal of the optical fiber repeater remote machine through the antenna to complete the interval coverage or receive the 450MHz frequency band column modulation signal from the interval.

[0029] Further, the main control module 13 includes a main controller 131 and a backup controller 132. The main controller 131 and the backup controller 132 are redundantly connected, and the main controller 131 and the backup controller 132 constitute a duplex hot backup control structure.

[0030] Through the implementation of the above-mentioned embodiment of the optical fiber repeater remote machine, the main controller 131 and the backup controller 132 are redundantly connected, so that the backup controller 132 is always in a hot backup state. Once the main controller 131 fails, the backup controller 132 can immediately take over the work, thereby realizing seamless switching of the main controller 131 and the backup controller 132, reducing the downtime of train dispatching, and ensuring the continuity and reliability of train dispatching.

[0031] Further, the optical fiber repeater remote machine further includes a power module 14. The power module 14 is electrically connected with the main control module 13, and is used to supply power for the main control module 13, the liquid crystal operation terminal 11 and the column modulation signal processing module 12.

[0032] Further, the power module 14 includes a main power supply unit 141 and a backup power supply unit 142. The main power supply unit 141 and the backup power supply unit 142 are respectively electrically connected with the main control module 13, and are used to switch the backup power supply unit 142 to supply power for the main control module 13, the liquid crystal operation terminal 11 and the column modulation signal processing module 12 after the main power supply unit 141 is powered off.

[0033] Through the implementation of the above-mentioned embodiment of the optical fiber repeater remote machine, when the main power supply unit 141 fails or is powered off, the standby power supply unit 142 can immediately take over the power supply, ensuring the continuous operation of the master control module 13, the liquid crystal operation terminal 11 and the column adjustment signal processing module 12, thereby ensuring the stability and availability of the entire system. And because the standby power supply unit 142 can quickly switch, the downtime of the entire optical fiber repeater remote machine when the main power supply unit 141 fails is minimized, which is particularly important for critical systems that need to run continuously. Preferably, the power supply time of the standby power supply unit 142 is not less than six hours.

[0034] Further, the optical fiber repeater remote machine further comprises an environment monitoring module 15. The environment monitoring module 15 comprises temperature sensors 151, humidity sensors 152, access control sensors 153 and water immersion sensors 154 distributed in the station area. The temperature sensors 151, humidity sensors 152, access control sensors 153 and water immersion sensors 154 are respectively electrically connected with the master control module 13, so that the operation state data monitored by the environment monitoring module 15 is transmitted to the master control module 13.

[0035] Through the implementation of the above-mentioned embodiment of the optical fiber repeater remote machine, the temperature sensors 151, humidity sensors 152, access control sensors 153 and water immersion sensors 154 distributed in the station area are respectively used for monitoring and ensuring the operation of the environment and infrastructure, and the monitored operation state data is directly transmitted to the master control module 13 of the optical fiber repeater remote machine for storage, so that the optical fiber repeater remote machine of the embodiment of the utility model has the functions of monitoring data transmission and storage, to complete the rapid transmission function of the state of external power, power distribution equipment, temperature, humidity, access control, water immersion, etc. Using the liquid crystal operation terminal 11 on the machine body 1, the operator can finally understand the operation state of the environment and ring equipment under the jurisdiction of the optical fiber repeater remote machine in real time through the state / parameter query area provided by the touch screen, and can discover and handle potential fault problems in time through the parameter configuration area, so that the operator near the optical fiber repeater remote machine can also directly remotely set the parameters of the environment and ring equipment and query the state / parameters of the environment and ring equipment, thereby providing great convenience for the application of the optical fiber repeater remote machine.

[0036] Further, the optical fiber repeater remote machine further comprises a leak cable monitoring module 16. The leak cable monitoring module 16 comprises a plurality of monitoring sensors distributed on the leak cable, and the plurality of monitoring sensors are electrically connected with the master control module 13, so that the operation state data monitored by the leak cable monitoring module 16 is transmitted to the master control module 13.

[0037] Through the implementation of the above-mentioned embodiment of the optical fiber repeater remote machine, the running state data of the leaky cable equipment under the jurisdiction of the optical fiber repeater remote machine is monitored in real time by the leaky cable monitoring module 16, and the monitored running state data is directly transmitted to the optical fiber repeater remote machine. By using the liquid crystal operation terminal 11 on the machine body 1, the operator can finally understand the running state of the leaky cable equipment under the jurisdiction of the optical fiber repeater remote machine in real time through the state / parameter query area provided by the touch screen, and can discover and handle potential fault problems in time through the parameter configuration area, so that the operator near the optical fiber repeater remote machine can also directly remotely set the parameters of the leaky cable equipment and query the state / parameters of the leaky cable equipment, thereby providing great convenience for the application of the optical fiber repeater remote machine.

[0038] Further, the optical fiber repeater remote machine further comprises a parameter detection module 17. The parameter detection module 17 comprises a plurality of performance parameter detection sensors, and the plurality of performance parameter detection sensors are electrically connected with the main control module 13, for monitoring and obtaining the running state data of the optical fiber repeater remote machine, and transmitting the monitored running state data to the main control module 13.

[0039] Through the implementation of the above-mentioned embodiment of the optical fiber repeater remote machine, the running state data of the leaky cable equipment under the jurisdiction of the optical fiber repeater remote machine is monitored in real time by the leaky cable monitoring module 16, and the monitored running state data is directly transmitted to the optical fiber repeater remote machine. By using the liquid crystal operation terminal 11 on the machine body 1, the operator can finally understand the running state of the leaky cable equipment under the jurisdiction of the optical fiber repeater remote machine in real time through the state / parameter query area provided by the touch screen, and can discover and handle potential fault problems in time through the parameter configuration area, so that the operator near the optical fiber repeater remote machine can also directly remotely set the parameters of the leaky cable equipment and query the state / parameters of the leaky cable equipment, thereby providing great convenience for the application of the optical fiber repeater remote machine.

[0040] Preferably, the optical fiber repeater remote machine of the utility model can also interact with the network management center. The network management center 3 comprises a network management operation terminal 31, a network management server 32 and a network management compound terminal 33. The network management server 32 interacts with the network management operation terminal 31 and the network management compound terminal 33 based on the BS architecture, and the network management server 32 is in communication connection with the optical fiber repeater remote machine. Specifically, the network management operation terminal 31 and the network management compound terminal 33 can interact with the network management server 32 through a browser based on the BS (Browser / Server) architecture. The network management server 32 is in communication connection with the near-end machine 2, so that it receives the monitoring data and the column adjustment signal from the optical fiber repeater remote machine, can simultaneously support the communication of the 400MHz frequency band or the 450MHz frequency band signal, so that the optical fiber repeater can self-adaptively support the weak field coverage of two different systems, and provides strong support for the replacement and improvement of the column adjustment system. The network management server 32 is used for inquiring, managing and configuring the state and parameters of the optical fiber repeater. For example, the network management server 32 stores the monitoring data of the on-site power supply state, temperature and humidity monitoring, access control management, water leakage monitoring and cable leakage monitoring equipment. Therefore, the operating personnel near the near-end machine can set the equipment parameters and inquire the equipment state / parameters through the local monitoring mode, and provide the functions of real-time monitoring the state of the optical fiber repeater remote machine, equipment inspection, alarm information display, dynamic data transmission / reception and the like.

[0041] It should be understood that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than limit them. For those skilled in the art, the technical solutions recorded in the above embodiments can be modified, or some technical features can be replaced equivalently. All these modifications and replacements should belong to the protection scope of the claims of the utility model.

Claims

1. A remote unit for a fiber optic repeater, characterized in that: The fiber optic repeater remote unit includes a body installed in the station section, and an LCD operation terminal, a train dispatch signal processing module and a main control module installed on the body; The LCD operation terminal is electrically connected to the main control module, and the LCD operation terminal includes a touch screen. The touch screen provides an interactive interface for the remote unit of the fiber optic repeater to interact with the operator. The interactive interface includes a status / parameter query area and a parameter configuration area. The train modulation signal processing module includes a multiplexer, an analog train modulation RF unit, a digital train modulation RF unit, and a photoelectric conversion unit. The photoelectric conversion unit, the main control module, the analog train modulation RF unit, and the multiplexer are electrically connected in sequence for bidirectional amplification and control of uplink and downlink analog electrical signals for wireless train modulation. The photoelectric conversion unit is used for near-end electromechanical connection to the fiber optic repeater via optical fiber, and the multiplexer is electrically connected to an antenna via a feeder.

2. The fiber optic repeater remote unit according to claim 1, characterized in that: Both the analog train modulation RF unit and the digital train modulation RF unit include an upconverter and a downconverter. The upconverter is electrically connected to the multiplexer and is used for uplink input and output of 400MHz or 450MHz band signals. The downconverter is electrically connected to the multiplexer and is used for downlink input and output of 400MHz or 450MHz band signals.

3. The fiber optic repeater remote unit according to claim 1, characterized in that: The main control module includes a main controller and a backup controller, which are redundantly connected and form a duplex hot-back control structure.

4. The fiber optic repeater remote unit according to any one of claims 1-3, characterized in that: The fiber optic repeater remote unit also includes a power module, which is electrically connected to the main control module and is used to supply power to the main control module, the LCD operation terminal, and the train dispatch signal processing module.

5. The fiber optic repeater remote unit according to claim 4, characterized in that: The power supply module includes a main power supply unit and a backup power supply unit. The main power supply unit and the backup power supply unit are electrically connected to the main control module, respectively. After the main power supply unit is powered off, the backup power supply unit is switched to supply power to the main control module, the LCD operation terminal and the train dispatch signal processing module.

6. The fiber optic repeater remote unit according to claim 1, characterized in that: The fiber optic repeater remote unit also includes an environmental monitoring module, which includes temperature sensors, humidity sensors, access control sensors, and water immersion sensors distributed in the station area. The temperature sensors, humidity sensors, access control sensors, and water immersion sensors are electrically connected to the main control module so that the operating status data monitored by the environmental monitoring module can be transmitted to the main control module.

7. The fiber optic repeater remote unit according to claim 1, characterized in that: The fiber optic repeater remote unit also includes a leaky cable monitoring module, which includes several monitoring sensors distributed on the leaky cable. The monitoring sensors are electrically connected to the main control module so that the operating status data monitored by the leaky cable monitoring module is transmitted to the main control module.

8. The fiber optic repeater remote unit according to claim 1, characterized in that: The fiber optic repeater remote unit also includes a parameter detection module, which includes several performance parameter detection sensors. These sensors are electrically connected to the main control module and are used to monitor and acquire the operating status data of the fiber optic repeater remote unit, and transmit the monitored operating status data to the main control module.

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