CN209170381U - Railway GSM-R optic-fiber repeater system with the covering of GPS Beidou signal - Google Patents
Railway GSM-R optic-fiber repeater system with the covering of GPS Beidou signal Download PDFInfo
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- CN209170381U CN209170381U CN201822261997.2U CN201822261997U CN209170381U CN 209170381 U CN209170381 U CN 209170381U CN 201822261997 U CN201822261997 U CN 201822261997U CN 209170381 U CN209170381 U CN 209170381U
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Abstract
The utility model provides a kind of railway GSM-R optic-fiber repeater system with the covering of GPS Beidou signal, it is characterised in that: including the near-end machine and remote termination connected by optical fiber；The near-end machine is connected with combiner, combiner is connected to the base station GSM-R by coupler, combiner is connected to GPS antenna or Beidou antenna by the first frequency converter, and the first frequency converter realizes Poc power supply and down coversion, and by 1558MHz-1578MHz frequency conversion is 900MHz-920MHz；The remote termination is connected to antenna or leakage cable by the second frequency converter, it is 1558MHz-1578MHz by 900MHz-920MHz frequency conversion that the second frequency converter, which realizes GSM-R downlink, uplink signal band logical and GPS or Beidou up-conversion,.Two sets of independent systems are merged into an entirety by the utility model, are efficiently solved the problems, such as that GPS/ Beidou Feeble field signal covering benefit is blind, are economized on resources, reduce maintenance workload and cost.
Description
Technical field
It is specifically a kind of that there is GPS Beidou signal to be covered on railway the utility model relates to Railroad Communication System field
GSM-R optic-fiber repeater system.
Background technique
GPS/ Beidou Navigation System play the role of to the operation of train it is vital, but in many places, such as
Garage, yard can not all normally receive GPS/ Beidou navigation signal in tunnel.
Therefore realize that signal blind compensating is that have certain meaning in the region that can not normally receive GPS/ Beidou signal.
At present GPS/ Beidou signal blind compensating equipment it is general there are two types of: the first is GPS/ Beidou wireless discharging-directly station, an independent equipment
It realizes, GPS/ Beidou signal is received by input antenna, is then amplified again, launched by output feeder, repetition antenna
It goes, this equipment applies in general to the smaller place in overlay area.Second is GPS/ Beidou optical fiber repeater, generally by having
Source receiving antenna, near-end machine, optical fiber, remote termination, retransmitting antenna composition, a near-end machine can connect more remote terminations, realize
Compare band-like signal covering at a distance, similar GSM-R optical fiber repeater.
Presently, there are the problem of be that GSM-R optical fiber repeater and GPS/ Beidou optical fiber repeater are all point in railway applications
It opens up and sets, not only at high cost in this way, but also the resource occupied is more, maintenance also bothers, so studying a kind of has GPS/ Beidou
The GSM-R optic-fiber repeater system of signal covering function still has Practical significance.
Utility model content
The utility model in order to solve problems in the prior art, provides a kind of railway with the covering of GPS Beidou signal
GSM-R optic-fiber repeater system, two sets of independent systems are merged into an entirety, efficiently solve GPS/ Beidou Feeble field signal
Blind problem is mended in covering, is economized on resources, and maintenance workload and cost are reduced.
The utility model includes the near-end machine and remote termination connected by optical fiber；
The near-end machine is connected with combiner, and combiner is connected to the base station GSM-R by coupler, and combiner passes through first
Frequency converter is connected to GPS antenna or Beidou antenna, and the first frequency converter realizes Poc power supply and down coversion, and by 1558MHz-
1578MHz frequency conversion is 900MHz-920MHz；
The remote termination by the second frequency converter be connected to antenna or leakage cable, the second frequency converter realize GSM-R downlink, on
900MHz-920MHz frequency conversion is 1558MHz-1578MHz by row signal band logical and GPS or Beidou up-conversion.
It is further improved, first frequency converter includes sequentially connected POC power supply module, low noise amplification module, lower change
Frequency module, wherein POC power supply module is connect with GPS antenna or Beidou antenna, and down conversion module is connected by combiner and near-end machine
It connects, each module is respectively connected with power module.
It is further improved, second frequency converter includes duplexer and combiner, direct-connected between duplexer and combiner
It realizes GSM-R downlink, uplink signal band logical, is realized between duplexer and combiner by up-converter module and become on GPS or Beidou
Frequently, up-converter module is connected with power module.
The utility model beneficial effect is:
1) it is blind to efficiently solve the problems, such as that the covering of GPS/ Beidou Feeble field signal is mended；
2) it can reduce investment outlay, be originally two sets of independent system/devices, now only need set of system/equipment；
3) resource can be saved, at least needs 2 optical fiber originally, now only needs an optical fiber.In addition without the concern for
A series of problems, such as additional power supply, installation；
4) maintenance workload and cost are reduced, two sets of independent systems is originally, needs to be safeguarded respectively, it is now integrated
What for set of system, safeguard with original GSM-R optic-fiber repeater system substantially without difference；
5) two sets of independent monitoring systems are needed originally, and server, transmission channel will be also provided separately, now using a set of
Network management system.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model.
Fig. 2 is the first frequency converter schematic diagram.
Fig. 3 is the second frequency converter schematic diagram.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
First frequency converter is as shown in Fig. 2, include sequentially connected POC power supply module, low noise amplification module, down coversion
Module, wherein POC power supply module is connect with GPS antenna or Beidou antenna, and down conversion module is connect by combiner with near-end machine,
Each module is respectively connected with power module.
Second frequency converter as shown in figure 3,
Principle Analysis:
GPS/ Beidou optical fiber repeater and GSM-R optic-fiber repeater system are all made of near-end machine, optical fiber and remote termination,
It is all to be consistent in principle by electric light-transmission-photoelectric conversion.GPS/ Beidou optical fiber repeater only needs downlink signal i.e.
Can, the positioning function of terminal device thus may be implemented.GSM-R optical fiber repeater not only has downlink signal, and there are also uplink letters
Number, but this is not related, the function of GSM-R optical fiber repeater includes GPS/ Beidou optical fiber repeater function.
Working frequency analysis:
GSM-R optical fiber repeater:
Uplink: 885MHz-889MHz；Downlink: 930MHz-934MHz
GPS/ Beidou optical fiber repeater:
Downlink: GPS-L1(GPS of America): 1575,420MHz ± 1.023MHz
BD2-B1(China Beidou): 1561.098MHz ± 2.046MHz
500MHz or so is differed, a little greatly, it is contemplated that the linearity of existing GSM-R optic-fiber repeater system radio-frequency devices,
The frequency of GPS/ Beidou optic-fiber repeater system can be done into frequency-conversion processing, by analysis the bandwidth of GPS/ Beidou optical fiber repeater
For 20MHz, i.e. 1558MHz-1578MHz, the frequency of GPS, Beidou can thus be included.
So suggesting that by 1558MHz-1578MHz frequency conversion be 900MHz-920MHz, as long as in this way optic-fiber repeater system
Downlink radio frequency module Bandwidth adjustment to 900MHz-934MHz, be mainly concerned with near-end machine duplexer, optical module, distal end
Machine optical module, power amplifier and duplexer module, uplink can not consider.
By analyzing above, GPS Beidou+GSM-R system can be carried out to following design, as shown in Figure 1: include passing through light
The near-end machine and remote termination of fibre connection.
The near-end machine is connected with combiner, and combiner is connected to the base station GSM-R by coupler, and combiner passes through first
Frequency converter is connected to GPS antenna or Beidou antenna, and the first frequency converter realizes Poc power supply and down coversion, and by 1558MHz-
1578MHz frequency conversion is 900MHz-920MHz；
The remote termination by the second frequency converter be connected to antenna or leakage cable, the second frequency converter realize GSM-R downlink, on
900MHz-920MHz frequency conversion is 1558MHz-1578MHz by row signal band logical and GPS or Beidou up-conversion.
Frequency converter A structure as shown in Fig. 2, include sequentially connected POC power supply module, low noise amplification module, down conversion module,
Wherein POC power supply module is connect with GPS antenna or Beidou antenna, and down conversion module is connect by combiner with near-end machine, each mould
Block is respectively connected with power module.
The function of frequency converter A is as follows: realizing Poc power supply and down coversion, and is by 1558MHz-1578MHz frequency conversion
900MHz-920MHz。
Frequency converter B structure is as shown in figure 3, include duplexer and combiner, direct-connected realization between duplexer and combiner
GSM-R downlink, uplink signal band logical realize GPS or Beidou up-conversion by up-converter module between duplexer and combiner, on
Frequency-variable module is connected with power module.
The function of frequency converter B is as follows: realizing GSM-R downlink, uplink signal band logical and GPS/ Beidou up-conversion, i.e., will
900MHz-920MHz frequency conversion is 1558MHz-1578MHz.
Functional requirement:
(1) meet the transmission covering of GSM-R signal, meet " TB/T 3364-2015 railway digital mobile communication system GSM-
R analog optical fiber repeater railway systems standard "
(2) meet Centralized Monitoring requirement, meet " Q/CR 11-2014 railway digital mobile communication system (GSM-R) optical fiber
Repeater Network Management System "
(3) meet the transmission of GSM-R signal and the covering of GPS/ Beidou signal
(4) GPS/ Beidou+GSM-R optical fiber repeater network management Centralized Monitoring is realized.
There are many utility model concrete application approach, and the above is only the preferred embodiment of the utility model, should
It points out, for those skilled in the art, without departing from the principle of this utility model, can also make
Several improvement out, these improvement also should be regarded as the protection scope of the utility model.
Claims (3)
1. a kind of railway GSM-R optic-fiber repeater system with the covering of GPS Beidou signal, it is characterised in that: including passing through light
The near-end machine and remote termination of fibre connection；
The near-end machine is connected with combiner, and combiner is connected to the base station GSM-R by coupler, and combiner passes through the first frequency conversion
Device is connected to GPS antenna or Beidou antenna, and the first frequency converter realizes Poc power supply and down coversion, and 1558MHz-1578MHz is become
Frequency is 900MHz-920MHz；
The remote termination is connected to antenna or leakage cable by the second frequency converter, and the second frequency converter realizes GSM-R downlink, uplink letter
900MHz-920MHz frequency conversion is 1558MHz-1578MHz by number band logical and GPS or Beidou up-conversion.
2. the railway GSM-R optic-fiber repeater system according to claim 1 with the covering of GPS Beidou signal, feature
Be: first frequency converter includes sequentially connected POC power supply module, low noise amplification module, down conversion module, wherein POC
Power supply module is connect with GPS antenna or Beidou antenna, and down conversion module is connect by combiner with near-end machine, and each module is all connected with
There is power module.
3. the railway GSM-R optic-fiber repeater system according to claim 1 or 2 with the covering of GPS Beidou signal, special
Sign is: second frequency converter includes duplexer and combiner, between duplexer and combiner under direct-connected realization GSM-R
Row, uplink signal band logical realize GPS or Beidou up-conversion, up-conversion mould by up-converter module between duplexer and combiner
Block is connected with power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822261997.2U CN209170381U (en) | 2018-12-30 | 2018-12-30 | Railway GSM-R optic-fiber repeater system with the covering of GPS Beidou signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822261997.2U CN209170381U (en) | 2018-12-30 | 2018-12-30 | Railway GSM-R optic-fiber repeater system with the covering of GPS Beidou signal |
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| Publication Number | Publication Date |
|---|---|
| CN209170381U true CN209170381U (en) | 2019-07-26 |
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| CN201822261997.2U Active CN209170381U (en) | 2018-12-30 | 2018-12-30 | Railway GSM-R optic-fiber repeater system with the covering of GPS Beidou signal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109639357A (en) * | 2018-12-30 | 2019-04-16 | 南京泰通科技股份有限公司 | Railway GSM-R optic-fiber repeater system with the covering of GPS Beidou signal |
-
2018
- 2018-12-30 CN CN201822261997.2U patent/CN209170381U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109639357A (en) * | 2018-12-30 | 2019-04-16 | 南京泰通科技股份有限公司 | Railway GSM-R optic-fiber repeater system with the covering of GPS Beidou signal |
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