CN205356699U - A train station positioner based on railway mobile communication system LTE -R - Google Patents
A train station positioner based on railway mobile communication system LTE -R Download PDFInfo
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- CN205356699U CN205356699U CN201620068820.9U CN201620068820U CN205356699U CN 205356699 U CN205356699 U CN 205356699U CN 201620068820 U CN201620068820 U CN 201620068820U CN 205356699 U CN205356699 U CN 205356699U
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Abstract
The utility model discloses a train station positioner based on railway mobile communication system LTE -R, including base station module, vehicle -mounted signal transmission/reception module and on -vehicle data processing module, base station module includes 3 LTE -R basic stations and is distributed basic station, vehicle -mounted signal transmission/reception module including setting up in signalling machine and the receiver on ranking the car undetermined, signalling machine and receiver respectively with the train with base station module is connected, on -vehicle data processing module including set up in undetermined on ranking the car the computer and be used for the coherent detection and instrument that data were resolved, undetermined the computer on the car ranks and be used for the coherent detection and instrument that data were resolved with base station module is connected, improved current communication system's utilization ratio, laying of the other equipment of rail that has significantly reduced has reduced plant maintenance work load, has reduced the location cost, and the horizontal geometrical accuracy factor of lowering system improves positioning accuracy.
Description
Technical field
This utility model relates to field of track traffic, more particularly to a kind of train yard positioner based on Railway Mobile Radio system LTE-R.
Background technology
Existing station train location relies primarily on the legacy equipments such as track circuit, inquiry response device, speedometer and the novel device such as GPS, spread spectrum radio location completes, but legacy equipment use cost is high, safety and maintainability poor, and point type positional information can only be provided, it is impossible to realize consecutive tracking；GPS can realize train consecutive tracking, but its high accuracy and high reliability are inseparable with the number of satellites in view and geometric distribution, and it is limited by satellite equipment behavior pattern, not in railway operation department span of control, once satellite failure cannot be repaired immediately, train operation is subjected to very big impact；Spread-spectrum radio positioner has the advantage that positioning precision is high, however it is necessary that and arranges special spread spectrum base station, positions relatively costly, is vulnerable to the interference of complicated wireless communications environment, thus affecting locating effect.
Obtain train position timely and effectively, transportation safety and the conevying efficiency of railway can be improved, rail yard is the important environment of train operation, in recent years, some utilize the idea that railway proprietary digital communication system carries out train location to be suggested, existing a kind of GSM-R(GSMforRailway utilizing Along Railway to lay, railway digital mobile communication system) localization method of base station is: according to the selected major-minor base station of the general flow of GSM-R system, train sends Location Request to described communication base station respectively, two communication base stations calculate the time that Location Request arrives respectively, and the time tranfer above-mentioned Location Request arrived respectively through communication gate is to train control center, time that described train control center arrives according to above-mentioned Location Request and locating base station Coordinate generation Location Request difference time of advent curve；The train control center control information according to train, inquires about track circuit data base, obtains the travel curve of train near Railway Mobile Radio base station；Then the intersection point of the travel curve of the above-mentioned Location Request difference curve time of advent and train is the run location of train.
Then propose the train locating method utilizing railway special wide-band mobile communication system LTE-R: using the base station of Liang Ge community adjacent before and after Serving cell residing for train as positioning service base station, two serving BSs send the positioning sub-frame containing PRS to train respectively, it is poor that train obtains the arrival of positional parameter time according to positioning sub-frame, and train control center utilizes the intersection point of time arrival difference curve and train travel curve to determine train position.
A new generation railway proprietary digital communication system LTE-R, compare to GSM-R system, LTE-R is technical advantage more, it is embodied in: high data rate, packet transmit, postpone to reduce, and location protocol devises location reference signals specially, special burst sequence need not be designed as Location Request, therefore select LTE-R system to realize train location more perspective.
But said process or device positioning precision are not very high, the real-time of train location are need raising and floor space is relatively larger, it is therefore desirable to provide a kind of new train yard positioner to solve the problems referred to above.
Summary of the invention
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of train yard positioner based on Railway Mobile Radio system LTE-R, decreases the transmission of information between base station and train control center, improves the real-time of train location.
A kind of train yard positioner based on Railway Mobile Radio system LTE-R, described train yard positioner includes base station module, cab signal sending/receiving module and vehicle-mounted data processing module；Described base station module includes 3 LTE-R base stations and is distributed base station, described cab signal sending/receiving module includes being arranged at the signal transmitter on train to be positioned and receiver, and described signal transmitter is connected with described train and described base station module respectively with receiver；Described vehicle-mounted data processing module includes the computer being arranged on train to be positioned and the instrument resolved for coherent detection and data, and the computer on described train to be positioned and the instrument for coherent detection and data resolving are connected with described base station module.
Preferably, respectively base station 1, described 3 LTE-R base stations, base station 2 and base station 3, described base station 2 and base station 3 are positioned at the side of station track and its line is parallel to station track, described base station 1 is arranged at described station track opposite side, using described base station 1 as summit, three base stations be that isosceles triangle is arranged, the coverage of described base station module is to station up-downgoing home signal.
Preferably, described receiver adopts superhet secondary mixing receiver.
The technical solution of the utility model has the advantages that
Disclosed in this utility model, a kind of train yard positioner based on Railway Mobile Radio system LTE-R utilizes existing Railway Mobile Radio system and equipment to build train yard field positioner, for realizing train location in rail yard, improve the utilization rate of existing communication system；Greatly reduce the laying of trackside equipment, decrease plant maintenance workload, reduce location cost；The horizontal geometric dilution of precision of reduction system, improves positioning precision；The distributed base station that base station module adopts has that cost is low, ambient adaptability is strong, the convenient advantage of engineering construction, the superhet secondary mixing receiver that cab signal sending/receiving module adopts has very big dynamic range of receiving and receiving sensitivity, it is possible to meet the telecommunication demand of positioner preferably；Location reference signals for train location transmits on antenna port 6, reduces the interference between reference signal and useful signal, will not other communication service in LTE-R communication system be interfered, meets train demand of consecutive tracking in yard.
Accompanying drawing explanation
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Fig. 1 is this utility model schematic layout pattern based on the train yard positioner of Railway Mobile Radio system LTE-R；
Fig. 2 is this utility model workflow diagram based on the train yard positioner of Railway Mobile Radio system LTE-R.
Detailed description of the invention
In order to have a clear understanding of the technical solution of the utility model, its detailed structure be will be set forth in the description that follows.Obviously, the concrete execution of this utility model embodiment is not limited to specific details appreciated by those skilled in the art.Preferred embodiment of the present utility model is described in detail as follows, except these embodiments of detailed description, it is also possible to have other embodiments.
Below in conjunction with drawings and Examples, this utility model is described in further details.
The present embodiment provides a kind of train yard positioner based on Railway Mobile Radio system LTE-R, in conjunction with Fig. 1 and Fig. 2, a kind of train yard positioner based on the special wide-band mobile communication system LTE-R of railway disclosed in figure, to realize the consecutive tracking of train in yard, and greatly reduce the laying of ground installation.
A kind of train yard positioner based on Railway Mobile Radio system LTE-R, described train yard positioner includes base station module, cab signal sending/receiving module and vehicle-mounted data processing module；Described base station module includes 3 LTE-R base stations and is distributed base station, described cab signal sending/receiving module includes being arranged at the signal transmitter on train to be positioned and receiver, and described signal transmitter is connected with described train and described base station module respectively with receiver；Described vehicle-mounted data processing module includes the computer being arranged on train to be positioned and the instrument resolved for coherent detection and data, and the computer on described train to be positioned and the instrument for coherent detection and data resolving are connected with described base station module.
Described base station module is made up of 3 LTE-R base stations, belong to distributed base station, for sending in LTE-R system containing location reference signals (PositioningReferenceSignal, PRS) down link signal, described location reference signals PRS is the signal being specifically designed to wireless location that LTE system introduces in protocol specification, can only transmit on the Resource Block of LTE distribution, it is the situation of 15kHz suitable in subcarrier spacing, antenna port transmits, can launch with higher-wattage during location and realize large range of covering, location reference signals for train location transmits on antenna port, reduce the interference between reference signal and useful signal, other communication service in LTE-R communication system will not be interfered；In order to improve the positioning precision of described positioner, devise the networking arrangement of base station module: the line of base station 2,3 is parallel to station track, and base station 1 is arranged at station track opposite side, so lay base station and can reduce the impact on location work of the location ambiguity solution；Using base station 1 as summit, three base stations be that isosceles triangle is arranged, the laying of isosceles triangle can reduce the horizontal geometric dilution of precision of system, improves positioning precision；Coverage is to station up-downgoing home signal；The distributed base station that base station module adopts has that cost is low, ambient adaptability is strong, the convenient advantage of engineering construction.
Described cab signal sending/receiving module is made up of the signal transmitter being arranged on train to be positioned and receiver, for realizing the two-way communication between train and base station module.Transmitter adopts two-step method scheme, and receiver adopts superhet secondary mixing receiver；The superhet secondary mixing receiver that cab signal sending/receiving module adopts has very big dynamic range of receiving and receiving sensitivity, it is possible to meet the telecommunication demand of positioner preferably；The two-step method transmitter schemes that cab signal sending/receiving module adopts, its tranmitting frequency and two local frequencies fall far short, and are not susceptible to the traction to local frequency of the strong signal, improve the stability of carrier frequency.
The described vehicle-mounted data processing module software by the computer being arranged on train to be positioned and for coherent detection and data resolving forms, its Main Function has two, one is parameter estimation, namely estimates positional parameter time of arrival (toa) from the framing signal received；Two is that train position resolves, and namely calculates train position according to location information such as the position coordinateses of positional parameter and base station, and it is mated with track data, finally determines train position.
The workflow of described positioner is: cab signal sending/receiving module sends Location Request to base station module as required；Base station module is responded this request and carries out location preparation；Base station module sends the down link signal containing location reference signals PRS to train；Cab signal sending/receiving module receives signal and does Localization Parameter Estimation；Vehicle-mounted data processing module positions information according to positional parameter and base station location coordinate etc. and resolves train position；Cab signal sending/receiving module is by position coordinates signals base module；Train position is informed train control center by base station module, in order to it carries out other work relevant to position.
The present embodiment utilizes existing Railway Mobile Radio system and equipment to build train yard field positioner, for realizing train location in rail yard, improves the utilization rate of existing communication system；Greatly reduce the laying of trackside equipment, decrease plant maintenance workload, reduce location cost；
The layout designs advantage of base station module is obvious: the line of base station 2,3 is parallel to station track, and base station 1 is arranged at station track opposite side, so lays base station and can reduce the impact on location work of the location ambiguity solution；Using base station 1 as summit, three base stations be that isosceles triangle is arranged, the laying of isosceles triangle can reduce the horizontal geometric dilution of precision of system, improves positioning precision.
Finally should be noted that: above example is only in order to illustrate that the technical solution of the utility model is not intended to limit; although this utility model being described in detail with reference to above-described embodiment; detailed description of the invention of the present utility model still can be modified or equivalent replacement by those of ordinary skill in the field; these are without departing from any amendment of this utility model spirit and scope or equivalent replace, all within the claims that application is awaited the reply.
Claims (3)
1. the train yard positioner based on Railway Mobile Radio system LTE-R, it is characterised in that described train yard positioner includes base station module, cab signal sending/receiving module and vehicle-mounted data processing module；Described base station module includes 3 LTE-R base stations and is distributed base station, described cab signal sending/receiving module includes being arranged at the signal transmitter on train to be positioned and receiver, and described signal transmitter is connected with described train and described base station module respectively with receiver；Described vehicle-mounted data processing module includes the computer being arranged on train to be positioned and the instrument resolved for coherent detection and data, and the computer on described train to be positioned and the instrument for coherent detection and data resolving are connected with described base station module.
2. the train yard positioner based on Railway Mobile Radio system LTE-R according to claim 1, it is characterized in that, respectively base station 1, described 3 LTE-R base stations, base station 2 and base station 3, described base station 2 and base station 3 are positioned at the side of station track and its line is parallel to station track, described base station 1 is arranged at the opposite side of described station track, using described base station 1 as summit, three base stations be that isosceles triangle is arranged, the coverage of described base station module is to station up-downgoing home signal.
3. the train yard positioner based on Railway Mobile Radio system LTE-R according to claim 1, it is characterised in that described receiver adopts superhet secondary mixing receiver.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620068820.9U CN205356699U (en) | 2016-01-25 | 2016-01-25 | A train station positioner based on railway mobile communication system LTE -R |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620068820.9U CN205356699U (en) | 2016-01-25 | 2016-01-25 | A train station positioner based on railway mobile communication system LTE -R |
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| CN205356699U true CN205356699U (en) | 2016-06-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108363087A (en) * | 2018-04-10 | 2018-08-03 | 厦门信同信息技术有限公司 | Utilize the railway positioning system and its localization method of repeater |
| CN112104975A (en) * | 2020-09-08 | 2020-12-18 | 中国联合网络通信集团有限公司 | Deployment method and device of wireless access network equipment |
-
2016
- 2016-01-25 CN CN201620068820.9U patent/CN205356699U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108363087A (en) * | 2018-04-10 | 2018-08-03 | 厦门信同信息技术有限公司 | Utilize the railway positioning system and its localization method of repeater |
| CN108363087B (en) * | 2018-04-10 | 2023-09-26 | 厦门信同信息技术有限公司 | Railway positioning system using repeater and positioning method thereof |
| CN112104975A (en) * | 2020-09-08 | 2020-12-18 | 中国联合网络通信集团有限公司 | Deployment method and device of wireless access network equipment |
| CN112104975B (en) * | 2020-09-08 | 2022-05-13 | 中国联合网络通信集团有限公司 | Deployment method and device of wireless access network equipment |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160629 Termination date: 20180125 |
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| CF01 | Termination of patent right due to non-payment of annual fee |