CN204906400U - High reliability 400MHz railway heibei provincial opera digital fiber repeater - Google Patents
High reliability 400MHz railway heibei provincial opera digital fiber repeater Download PDFInfo
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- CN204906400U CN204906400U CN201520463645.9U CN201520463645U CN204906400U CN 204906400 U CN204906400 U CN 204906400U CN 201520463645 U CN201520463645 U CN 201520463645U CN 204906400 U CN204906400 U CN 204906400U
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Abstract
The utility model provides a high reliability 400MHz railway heibei provincial opera digital fiber repeater, include near -end machine and remote termination through the fiber connection, the near -end machine is connected with near -end antenna and a plurality of station radio station through the coupler, and the near -end machine has comprehensive network management server through FE interface connection, the remote termination passes through the distal end antenna to be connected with the mobile device, and the remote termination has monitoring device through FE interface connection. The utility model discloses in being applied to railway heibei provincial opera system, can make the work of two platform truck station radio station mutual independence to realize the dual -band simultaneous working, mutual independence.
Description
Technical field
The utility model relates to cluster plane shunting system field, specifically a kind of high reliability 400MHz railway Heibei provincial opera digital optical fiber direct station.
Background technology
The frequency range of GSM-R digital optical fiber direct station work: uplink band 885MHz ~ 889MHz, band downlink: 930MHz ~ 934MHz.Near-end machine receives the signal of GSM-R mobile communication base station, carry out down-converting to intermediate-freuqncy signal and converting digital signal to, be packaged into serial data mode, optical module is sent to remote termination by optical fiber after carrying out electrical/optical conversion, remote termination optical module receives near-end machine downstream digital signal after carrying out light/electricity conversion, revert to intermediate-freuqncy signal, then upconvert to GSM-R frequency, gone out by leakage cable or antenna transmission.The upward signal that remote termination receives GSM-R mobile terminal by leakage cable or antenna first carries out down-conversion, convert digital signal to, after carrying out digital noise reduction process simultaneously, optical module is sent to near-end machine by optical fiber after carrying out electrical/optical conversion, and the signal that digital signal is converted to GSM-R frequency by near-end machine again issues base station receiver again.GSM-R digital optical fiber direct station adopts dual-mode.
400MHz Heibei provincial opera digital optical fiber direct station adopts software and radio technique, by Um Interface signal digital, is sent to far-end by optical fiber, utilizes remote radio unit (RRU) to regenerate, amplifies, realize the wireless network overlay device that base station signal zooms out covering.Utilize the method for software radio RF signal digital, adopt the digital transmission interface meeting CPRI standard, eliminate the end that multiple stage remote termination formed to make an uproar lifting, at numeric field, signal is processed, the equipment that greatly enhances is to the process of signal and control ability, as digital filtering eliminates adjacent channel interference, be easy to accomplish multicarrier frequencyselective transmission (common have 4,8,12,16 channels); Automatic/hand propagation delay time adjusts, and eliminates the delay dispersion interference of overlapped signal between repeater, same community; Detection of dynamic channel, reduces noise jamming etc.Adopt high-power High Linear power amplifier technology, exceed microcellulor when guaranteeing that multi-carrier frequency zooms out and close to the covering power of base station.
But the irredundant backup of existing 400MHz Heibei provincial opera digital optical fiber direct station key modules, unexecuted ring of light networking, does not provide Fast Ethernet pass-through channel.
Utility model content
The utility model is in order to solve the problem of prior art, provide a kind of high reliability 400MHz railway Heibei provincial opera digital optical fiber direct station, be applied in railway plane shunting system, the separate work of two chassis station radios can be made, and realize two-band and work simultaneously, separate.
The utility model comprises near-end machine by Fiber connection and remote termination, and near-end machine is connected with near-end antenna and some station radio sets by coupler, and near-end machine is connected with comprehensive network management server by FE interface; Remote termination is connected with mobile device by remote antenna, and remote termination is connected with supervising device by FE interface.
Described near-end machine comprises near-end control board, near-end power supply, near-end digital intermediate frequency plate and some proximal annular rim devices, wherein some proximal annular rim devices and some station radio set one_to_one corresponding, each proximal annular rim device is all connected with near-end digital intermediate frequency plate by up-downgoing two circuits; Near-end digital intermediate frequency plate is connected with remote termination by optical fiber, and near-end digital intermediate frequency plate is connected with near-end control board by data/address bus, and near-end control board is connected with comprehensive network management server by FE interface.Wherein, near-end power supply, near-end digital intermediate frequency plate and near-end control board are equipped with backup, the up and down line of each proximal annular rim device is connected with active and standby near-end digital intermediate frequency plate respectively by power splitter, and active and standby near-end digital intermediate frequency plate is connected with active and standby near-end control board respectively.
Described remote termination comprises far-end control board, far end supply, remote digital IF board and the distal annular rim device corresponding with proximal annular rim device quantity, wherein remote digital IF board is connected with each distal annular rim device with low noise amplification respectively by power amplifier, and each distal annular rim device is all connected with corresponding remote antenna by a filter; Described far-end control board is connected with remote digital IF board, power amplifier and low noise amplification respectively, and far-end control board is connected with supervising device by FE interface.Be provided with power splitter between remote digital IF board and low noise amplification, remote digital IF board is all connected by up-downgoing two-wire with between power splitter and power amplifier.Wherein, far end supply, remote digital IF board and far-end control board are equipped with backup.
Further improvement, described supervising device comprises video frequency graphic monitoring equipment, environmental forces is monitored at one's side, anti-disaster monitoring equipment.
Further improvement, described some station radio sets comprise high band radio station f1 and low-frequency range radio station f0.
The utility model beneficial effect is:
1, the separate work of two chassis station radios in railway plane shunting system can be controlled, and realize two-band and work simultaneously, separate.
2, there is multiple key modules redundancy: the redundancy backup of the critical components such as power module, digital light module, digital intermediate frequency plate, power amplifier module and control board, and possess automatic switching function, improve system reliability;
3, multiple redundancy group net mode is supported between near-end machine and remote termination, as star-like, external, ring-like, intertexture type and mixed type networking;
4, optical loop function, near-end machine adopts redundancy optical loop technology, when any optical fiber of loop disconnect, after far-end delays machine or IF board crashes, other remote terminations are all kept normal work by redundancy optical loop technology by near-end machine, guarantee the communication of railway plane shunting system;
5, there is multichannel Ethernet pass-through channel (Ethernet transmission rate >=10Mbps) pass-through channel interface, achieve the Ethernet high speed pass-through channel of near-end machine and remote termination, can be other communication equipments and high-speed transfer passage is provided, can fiber resource be reduced, save project cost.
Accompanying drawing explanation
Fig. 1 is that 400MHz plane shunting system feeble field covers schematic diagram.
Fig. 2 is the utility model System Working Principle figure.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
400MHz plane shunting system feeble field covers schematic diagram.As shown in Figure 1, comprise the near-end machine by Fiber connection and remote termination, near-end machine is connected with near-end antenna and some station radio sets by coupler, and near-end machine is connected with comprehensive network management server by FE interface; Remote termination is connected with mobile device by remote antenna, and remote termination is connected with supervising device by FE interface.
As shown in Figure 2, concrete System's composition is as follows for the utility model System Working Principle figure:
1) near-end machine DMU
The major part of near-end machine work, is the radiofrequency signal that station radio set is launched is changed into light signal send remote termination to by optical fiber, the uplink optical signal that remote termination is sent here is changed into radiofrequency signal by near-end machine and delivers to station radio set.
Each digital intermediate frequency plate is designed to 2 tunnels input (down going channel) and 2 and exports (data feedback channel).Wherein 2 tunnels are input as descending input channel, and one piece of IF board can access the station radio set of two different frequency ranges.Other 2 tunnels export as up output channel, the upward signal of different frequency range station radio set can be delivered to corresponding station radio set.
Active and standby IF board is shown in and is communicated by data/address bus, if after main IF board fault, automatically switches to standby IF board.
Each IF board can install two optical modules, double light path redundancy backup.
Active and standby control board all has Ethernet transparent transmission interface, can access the FE interface channel of station machine room, the data of the transparent transmission of remote termination are delivered to corresponding NM server.
2) remote termination DRU
The major part of remote termination work, the downlink optical signal that near-end machine is sent here is changed into radiofrequency signal by remote termination carry out signal filtering, amplification, control, carry out blind area covering eventually through antenna transmission, handheld platform or terminal transmission upward signal out sends near-end machine by changing light signal into after remote termination filtering, low noise amplification, control to by optical fiber.
Each digital intermediate frequency plate is designed to 2 tunnels and exports (down going channel) and 2 inputs (data feedback channel).Wherein 2 tunnels export as descending output channel, and one piece of IF board can export two different frequency range signals, delivers to different power amplifier module and amplifies.Other 2 tunnels are input as up input channel, can deliver to corresponding station radio set by the antenna upward signal that receives different frequency range.
Active and standby IF board is shown in and is communicated by data/address bus, if after main IF board fault, automatically switches to standby IF board.
Each IF board can install two optical modules, double light path redundancy backup.
Power amplifier module internal amplification circuit adopts Hot Spare patten's design, once after primary amplifying circuit fault, automatically switch to for subsequent use
Amplifying circuit works, and improves the reliability requirement of remote termination.
Active and standby control board all has Ethernet transparent transmission interface, video frequency graphic monitoring equipment, environmental forces watch-dog and anti-disaster monitoring equipment etc. can be accessed, for they provide transparent communication passage between near-end machine and remote termination, by near-end machine, communication data or alarm status can be delivered to corresponding NM server.
3) antenna
Towards the directional antenna of coverage hole, receive the upward signal of hand-held station or terminal, the downstream signal function of car launcher station radio.
4) optical fiber
Fiber connection proximal fiber machine and remote termination, the light signal that transmission is near, remote termination changes.
5) coupler
Coupler is the radio-frequency devices extracting sub-fraction signal from the trunk passage that station radio set transmits.
Utility model works principle is as follows:
Dispatching desk or night shift room need send shunts order or needs call signal etc., transmit by coupler coupling sub-fraction signal by station radio set, enter near-end machine input port, down-conversion is carried out by digital intermediate frequency plate after circulator, A/D changes, electro-optic conversion is carried out by digital light module after digital filtering and digital processing etc., the signal of telecommunication changes light signal into, proximally machine inputs to optical fiber, Optical Fiber Transmission is to remote termination, the digital light module of remote termination transfers the signal of telecommunication to light signal, enter digital intermediate frequency plate and carry out digital processing, digital filtering, the radiofrequency signal of D/A conversion and up-conversion reduction station radio set, deliver to power amplifier to amplify, transmitting antenna is sent into again by circulator and filter, coverage goal region.The operation principle of up link is the same, and the signal of hand-held station or terminal to remote termination by reception antenna, then to near-end machine, is got back to station radio set, delivered to dispatching desk or night shift room.
Station radio set 1 and station radio set 2 transmit frequency band inconsistent, the corresponding station radio sets of two antennas launch different frequency ranges.Two station radio sets can work simultaneously, separate.
Remote termination data feedback channel and down going channel working mechanism: down going channel optimization principles.When station radio set transmits; after power amplifier has detected input signal, power amplifier module exports and controls I/O interface control LNA module, allows it be in non operating state (only control unit work; radio circuit cuts off supply power voltage, and protection LNA module device is not damaged).
Dual control board controlling mechanism: double control redundancy backup, system default is that the first control appliance of main control board normally works, and standby controller board is in data decryptor state.A control board is primary, and another control board is for subsequent use.After main control board produces the fault such as deadlock, chip evil idea, automatically by standby controller board adapter control.
Near-end machine control board is responsible for communicating with NM server, has the function such as active reporting alarm, accident analysis judgement.
1, products characteristics:
1.1 systems adopt the coffret meeting CPRI standard, and have employed Digital Optical Terminal technology.
1. radio frequency is not decayed with the decay of light signal, in long Distance geometry many shunt transmitting procedure, keep dynamic range constant.
2. the time delay of Digital Transmission can calculate and correct, and guarantees that mobile communication positioning precision is accurate.
3. adopt Digital Transmission, can adopt daisy chain transmission means, signal can repeatedly regenerate.
1.2 utilize digital if technology that RF radiofrequency signal is carried out digitlization, process digital signal at numeric field, and the equipment that enhances greatly is to the process of signal and control ability.
1. digital filtering has the degree of suppression higher than intermediate frequency SAW (Surface Acoustic Wave) filter.
2. can support that multiple carrier wave works simultaneously.
1.3 support the frequency range that railway plane is shunt
Such as: support f0 (411MHz ~ 413MHz) and high and low two frequency ranges of f1 (417MHz ~ 420MHz), each frequency range is 3M bandwidth, and two station radio sets can be selected by arranging high and low two frequency ranges of f0, f1.
1.4 adapt to channel transmission
1. two autonomous channels are respectively at high and low two band operation of f0, f1, separate, can work simultaneously, not interfere with each other.
2. carrier operation channel width is 50KHz bandwidth.
1.5 mode of operations:
Joining common-frequency simplex transceiver mode;
More than 1.6 kind of networking model
Multiple redundancy group net mode is supported, as star-like, external, the networking such as ring-like between near-end machine and remote termination.
1.7 network management monitoring
1. meet the requirement of railway webmaster monitoring criteria, accomplish uniform protocol, united net management.
2. adopt RS485 interface, achieve control board and power amplifier, LNA, IF board, power module etc. are monitored in real time.
3. have delay parameter query capability, every platform remote termination time delay can be grasped in real time, is convenient to the network optimization.
4. supervisory control system alarm parameter is full and accurate, can not only the website of clear failure, can also clear failure type and to malfunctioning module, shortens the eliminating time of fault.
2, functional requirement:
2.1 support that uplink and downlink are with work frequently.
2.2 meet descending closedown at ordinary times, up work; When descending have a signal time, up closedown, downlink working.
2.3 uplink and downlink adopt the high filter of suppression, the circulator of high-isolation, ensure uplink and downlink isolation, guarantee that double-channel frequency normally works, be independent of each other mutually;
During 2.4 descending unlatching, data feedback channel is protected, prevent up LNA module damage.
2.5 uplink and downlink switching times: be not more than 50ms.
2.6 digital intermediate frequency plate redundancy backups, after work IF board fault, automatically switch to the work of Hot Spare IF board;
2.7 power amplifier module internal circuit redundancy backups, after internal radio frequency amplifier failures, automatically switch to another backup RF amplifier modules, the inner radio-frequency (RF) switch that adopts carries out switching channel.
2.8 support annular networking, after any remote termination DRU fault or optical fiber disconnect, automatically switch to two chain networkings, when remote termination DRU or optical fiber recover, automatically recover ring-shaped network.
2.9 have optical module redundant transmission.
2.10 have multichannel Ethernet pass-through channel (Ethernet transmission rate >=10Mbps) pass-through channel interface, achieve the Ethernet high speed pass-through channel of near-end machine and remote termination, can be other communication equipments and provide high-speed transfer passage.
2.11 network management function
<1> local monitor function should meet following requirement:
I) local monitoring interface is provided;
Ii) status display function is possessed, the operating state of real-time display device and main modular, power supply status and equipment alarm state.
Iii) should possess parameter inquired about and arranges, the function such as alarm inquiry and software download.
<2> remote maintenance functions should meet following requirement:
I) support that monitor data is accessed Surveillance center by Ethernet mode;
Ii) possess parameter inquired about and arranges, alarm inquiry and remote software is downloaded and upgrading.
3 systematic technical indicators
3.1 light characteristic indexs
| Light mouth message transmission rate | ≥2.5Gbps |
| Optical output power | －9dBm～-3dBm |
| Light receiving power | －20～－22dBm |
| Transmission range | Be greater than 20km |
3.2 radio-frequency technique indexs
3.3 Out-of-band rejection indexs
| Frequency departure (departing from working band edge) | Out-of-band rejection |
| 400kHz≤f_offset＜600kHz | ≥60dB |
| 600kHz≤f_offset＜3MHz | ≥70dB |
| 3MHz≤f_offset | ＜90dB |
4 structural requirements
4.1 jointing requirements
1. near-end machine: 2 RF interfaces, multiple optical interface, 1 power interface, two network management interfaces, multiple transparent transmission FE interface;
2. remote termination: 2 antennal interfaces, multiple optical interface, 1 V power interface, two local debugging interfaces, multiple transparent transmission FE interface;
4.2 cabinets require:
1. near-end machine: 2U cabinet (adapting to 19-inch standard cabinet install);
2. remote termination: cast aluminium cabinet, degree of protection IP65.
5 environmental suitability requirements
5.1 near-end machine DMU
Operating temperature range :-25 DEG C ~+55 DEG C
Operating voltage: AC220V ± 30% or DC-48V ± 10V;
5.2 remote termination DRU
Operating temperature range :-25 DEG C ~+55 DEG C
Operating voltage: AC220V ± 30% or DC-48V ± 10V;
5.3 vibrations: near-end machine: 10Hz ~ 30Hz, 0.38mm; 30Hz ~ 55Hz, 0.19mm
Remote termination: 10Hz ~ 30Hz, 0.75mm; 30Hz ~ 55Hz, 0.25mm.
5.4 direction of vibration: normal operative orientation 3 scan rounds, the resonance point that may damage as found that there is need stand the vibration of 10min at resonance point.
5.5 impact: acceleration is 6g, and the pulse duration is 18ms, carries out 18 Secondary Shocks altogether.
The utility model embody rule approach is a lot; the above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvement, these improvement also should be considered as protection range of the present utility model.
Claims (8)
1. a high reliability 400MHz railway Heibei provincial opera digital optical fiber direct station, comprise the near-end machine by Fiber connection and remote termination, it is characterized in that: near-end machine is connected with near-end antenna and some station radio sets by coupler, and near-end machine is connected with comprehensive network management server by FE interface; Remote termination is connected with mobile device by remote antenna, and remote termination is connected with supervising device by FE interface.
2. high reliability 400MHz railway Heibei provincial opera digital optical fiber direct station according to claim 1, it is characterized in that: described near-end machine comprises near-end control board, near-end power supply, near-end digital intermediate frequency plate and some proximal annular rim devices, wherein some proximal annular rim devices and some station radio set one_to_one corresponding, each proximal annular rim device is all connected with near-end digital intermediate frequency plate by up-downgoing two circuits; Near-end digital intermediate frequency plate is connected with remote termination by optical fiber, and near-end digital intermediate frequency plate is connected with near-end control board by data/address bus, and near-end control board is connected with comprehensive network management server by FE interface.
3. high reliability 400MHz railway Heibei provincial opera digital optical fiber direct station according to claim 2, it is characterized in that: described near-end power supply, near-end digital intermediate frequency plate and near-end control board are equipped with backup, the up and down line of each proximal annular rim device is connected with active and standby near-end digital intermediate frequency plate respectively by power splitter, and active and standby near-end digital intermediate frequency plate is connected with active and standby near-end control board respectively.
4. high reliability 400MHz railway Heibei provincial opera digital optical fiber direct station according to claim 1, it is characterized in that: described remote termination comprises far-end control board, far end supply, remote digital IF board and the distal annular rim device corresponding with proximal annular rim device quantity, wherein remote digital IF board is connected with each distal annular rim device with low noise amplification respectively by power amplifier, and each distal annular rim device is all connected with corresponding remote antenna by a filter; Described far-end control board is connected with remote digital IF board, power amplifier and low noise amplification respectively, and far-end control board is connected with supervising device by FE interface.
5. high reliability 400MHz railway Heibei provincial opera digital optical fiber direct station according to claim 4, it is characterized in that: be provided with power splitter between described remote digital IF board and low noise amplification, remote digital IF board is all connected by up-downgoing two-wire with between power splitter and power amplifier.
6. high reliability 400MHz railway Heibei provincial opera digital optical fiber direct station according to claim 5, is characterized in that: described far end supply, remote digital IF board and far-end control board are equipped with backup.
7. high reliability 400MHz railway Heibei provincial opera digital optical fiber direct station according to claim 1, is characterized in that: described supervising device comprises video frequency graphic monitoring equipment, environmental forces is monitored at one's side, anti-disaster monitoring equipment.
8. high reliability 400MHz railway Heibei provincial opera digital optical fiber direct station according to claim 1, is characterized in that: described some station radio sets comprise high band radio station (f1) and low-frequency range radio station (f0).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520463645.9U CN204906400U (en) | 2015-07-01 | 2015-07-01 | High reliability 400MHz railway heibei provincial opera digital fiber repeater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520463645.9U CN204906400U (en) | 2015-07-01 | 2015-07-01 | High reliability 400MHz railway heibei provincial opera digital fiber repeater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337668A (en) * | 2015-07-01 | 2016-02-17 | 南京泰通科技股份有限公司 | High-reliability 400MHz railway flat-regulation digital optical fiber repeater |
| CN110035411A (en) * | 2017-12-22 | 2019-07-19 | 泰连德国有限公司 | For transmitting the device of data in vehicle |
-
2015
- 2015-07-01 CN CN201520463645.9U patent/CN204906400U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337668A (en) * | 2015-07-01 | 2016-02-17 | 南京泰通科技股份有限公司 | High-reliability 400MHz railway flat-regulation digital optical fiber repeater |
| CN110035411A (en) * | 2017-12-22 | 2019-07-19 | 泰连德国有限公司 | For transmitting the device of data in vehicle |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20200701 |
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| CF01 | Termination of patent right due to non-payment of annual fee |