CN102158829B - Train tail information transmission system for train - Google Patents
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Abstract
The invention provides a train tail information transmission system for a train. The system comprises a train head on-board module, a train tail on-board module and a ground train tail register server, wherein the train head on-board module is positioned at the head of the train; the train tail on-board module is positioned at the tail of the train; the ground train tail register server is communicated with the train head on-board module and the train tail on-board module through a WiMAX (Worldwide Interoperability for Microwave Access) network and is used for establishing a unique corresponding relation between the train head on-board module and the train tail on-board module before the train head on-board module and the train tail on-board module are communicated; and the train tail on-board module is used for acquiring train tail information and sending the train tail information to the train head on-board module through the WiMAX network. In the invention, the WiMAX network based on an OFDM/OFDMA (Orthogonal Frequency Division Multiplexing/Orthogonal Frequency Division Multiplexing Access) packet switching technology is applied to train tail information transmission for the first time, the problem that the effect of transmitting train tail wind pressure information traditionally by adopting a radio station is influenced by the train length can be solved, meanwhile, conditions for developing other train dedicated businesses at the tail of the train by utilizing the WiMAX network are created.
Description
Technical field
The present invention relates to networking technology area, and relate in particular to a kind of train tail information transmission system for train.
Background technology
In the running of China railways train, the wind pressure value of last vehicle of train is the important referential data of safe train operation, and particularly growing up in heavy haul train, normally whether the blast information of last vehicle of train, will directly affect the braking effect of train.Current train tail information transmission system utilizes 400MHz+400KHz radio station that the blast testing equipment of traction locomotive query facility and last vehicle of train is coupled together one to one, thereby traction locomotive query facility can the measured wind pressure value of Real-time Obtaining blast testing equipment.This train tail information transmission system is more effective for short-range train, but for the heavy haul train of growing up, because the distance between head and the afterbody of train has reached 1.3km or 2.6km is even longer, add in train travelling process geographical environment complicated and changeable, will cause the connection distance of radio station long, and off and on, row tail blast information can not be delivered on traction locomotive in time, cannot take control measure to offer help to driver.
Summary of the invention
Cannot transmit in time the defect of row tail blast information to traction locomotive for overcoming train tail information transmission system in prior art for the heavy haul train of growing up, spy of the present invention provides the train tail information transmission system of geographical environment restriction in a kind of transmission Bu Shou train length of train end information and train travelling process.
Train tail information transmission system for train provided by the invention comprises: be listed as a vehicle module, be positioned at the head of described train; Row tail vehicle module, is positioned at the afterbody of described train; And ground row tail registrar, pass through WiMAX network service with a described row vehicle module and row tail vehicle module, for before a described row vehicle module and described row tail vehicle module communicate for both set up this unique corresponding relation between the two, described row tail vehicle module is used for gathering train end information, and by WiMAX network, described train end information is sent to a described row vehicle module.
The present invention is transmitted the WiMAX network application based on OFDM/OFDMA packet-switch technology first in train end information, and can solve traditional employing radio station transmission row tail blast information effect and be subject to the problem that train length affects, also create condition for utilizing WiMAX network to carry out the exclusive business of other railway at last vehicle of train simultaneously.
Brief description of the drawings
Fig. 1 is the structure chart of train tail information transmission system provided by the invention;
Fig. 2 is the structure chart of an execution mode of train tail information transmission system provided by the invention;
Fig. 3 is listed as the flow chart of setting up unique corresponding relation between a vehicle module and row tail vehicle module in train tail information transmission system provided by the invention;
Fig. 4 is listed as the flow chart that transmits the communication process of train end information between a vehicle module and row tail vehicle module in train tail information transmission system provided by the invention;
Fig. 5 is listed as the flow chart that transmits another communication process of train end information between a vehicle module and row tail vehicle module in train tail information transmission system provided by the invention; And
Fig. 6 a and Fig. 6 b are listed as the flow chart of removing unique corresponding relation between a vehicle module and row tail vehicle module in train tail information transmission system provided by the invention.
Embodiment
For allow above and other object of the present invention, feature and advantage can be more obvious, below will coordinate appended diagram, be described in detail below.
First the concrete meaning of the term that hereinafter occurred and abbreviation is explained as follows:
Engine number: forever indicate the number (containing model and numbering) of traction locomotive, in WiMAX network, engine number is unique in system-wide compass of competency.
Train tail host sequence number: indicate the number of train-tail safty guard main frame, in WiMAX network, train tail host sequence number is unique in system-wide compass of competency.
Row tail terminal: finger is deployed on locomotive, can send to train tail host the device of query statement display column tail Query Result or train tail host Active report result, referred to as TET (Terminal forEnd-of-Train).
Locomotive row tail control box: finger is deployed on locomotive, querying command from row tail terminal and Query Result are carried out encoding and decoding and send to respectively the device of vehicle-carrying communication module or row tail terminal, referred to as CBET (Control Box for End-of-Train).
Vehicle-carrying communication module: finger is deployed on locomotive, carrying sends query statement or the communicator from WiMAX reception train end information to WiMAX, can be referred to as CML (Communication Moduleon Locomotive).
Train tail host: finger is deployed on last vehicle of train, to the device of last vehicle of train information, referred to as HET (Host for End-of-Train).
Row tail communication module: finger is deployed on last vehicle of train, is connected with train tail host, for communicating to transmit the device of train end information with WiMAX, referred to as CMET (Communication Module forEnd-of-Train).
Ground row tail registrar: while referring to utilize WiMAX carrying train end information, for onboard subsystem and train tail apparatus provide the server of registration and cancellation, train end information transmission and associated communication system regular maintenance, referred to as ETS (End-of-Train Server).
Fig. 1 is the structure chart of train tail information transmission system provided by the invention.As shown in Figure 1, the train tail information transmission system for train provided by the invention comprises: be listed as a vehicle module 100, be positioned at the head of described train; Row tail vehicle module 200, is positioned at the afterbody of described train; And ground row tail registrar 300, pass through WiMAX network service with a described row vehicle module 100 and row tail vehicle module 200, be used for before a described row vehicle module 100 and described row tail vehicle module 200 communicate for both set up this unique corresponding relation between the two, described row tail vehicle module 200 is for gathering train end information, and by WiMAX network, described train end information sent to a described row vehicle module 100.
Wherein, described ground row tail registrar 300 can be positioned at train a certain position along the line, for example, can be near train station.Train can be set up the unique corresponding relation between a row vehicle module 100 and row tail vehicle module 200 by this ground row tail registrar 300 before travelling, so that these row vehicle module 100 can communicate with row tail vehicle module 200 in train driving process.
Wherein, a described row vehicle module 100 can generate train end information querying command, and this train end information querying command is sent to row tail vehicle module 200; Row tail vehicle module 200 receives the train end information querying command from a described row vehicle module 100, generates train end information according to this querying command, and this train end information is sent to a row vehicle module 100.
Wherein, described row tail vehicle module 200 can generate a train end information every predetermined amount of time, and this train end information is sent to a row vehicle module 100.
Fig. 2 is the structure chart of an execution mode of train tail information transmission system provided by the invention.As described in Figure 2, a described row vehicle module 100 comprises vehicle-carrying communication module 110, locomotive row tail control box 120 and row tail terminal 130, and three is connected successively by CAN bus.Described row tail vehicle module 200 comprises input unit 210, row tail communication module 220 and train tail host 230, wherein row tail communication module 220 is connected by CAN with train tail host 230, and described vehicle-carrying communication module 110 and row tail communication module 220 communicate via WiMAX network.Wherein, described input unit 210 can be infrared confirmation instrument, and described train tail host 230 has infrared interface, and described infrared confirmation instrument can be inputted instruction to train tail host 230 by infrared interface.Certainly, described infrared confirmation instrument also can be other and is suitable for the input equipment of input message, such as keyboard, touch-screen etc.
Before a described row vehicle module 100 and described row tail vehicle module 200 communicate, and must set up unique corresponding relation.The described row tail vehicle module 200 IP address that row tail registrar (ETS) 300 application obtains himself is earthward (in the situation that this row tail vehicle module 200 self has IP address, can omit this operation), and the engine number of inputting according to input unit 210 obtains the IP address of the vehicle-carrying communication module (CML) 110 corresponding with this engine number to ETS300 application, store afterwards this IP address, to utilize this IP address and a described row vehicle module 100 to communicate.Below in conjunction with above structure and Fig. 3, a specific descriptions row vehicle module 100 and described row tail vehicle module 200 are set up the process of unique corresponding relation.
(1) after train tail host (HET) 230 starts, train crews can be inputted HET 230 by engine number by input unit 210.
(2) obtaining after engine number, HET 230 initiates network registration via row tail communication module (CMET) 220 to WiMAX network, and this HET sequence number of storing using HET 230 is as user name, row tail registrar (ETS) 300 applications obtain IP addresses earthward; Wherein, the vehicle-carrying communication module (CML) 110 being positioned on locomotive has fixing IP address, and this IP address and corresponding engine number thereof are all stored in ETS 300, and this ETS 300 possesses the function of DHCP.
Wherein, described HET 230 also can have the intrinsic IP address of self, in the case, can omit above-mentioned steps (2).
(3) HET 230 is after obtaining the IP address of himself, the engine number that it is stored is sent to ETS 300 via CMET 220, ETS 300 transforms into this engine number the IP address of corresponding CML 110 and this IP address is sent to CMET 220, this IP address is issued HET230 by CMET 220, HET 230 these IP addresses of storage, to utilize this IP address access CML 110.
(4) HET 230, using IP address that it was received as destination address, sends to CML 110 setting up corresponding relation request via CMET 220 requests.
(5) CML 110 receives setting up after corresponding relation solicited message that HET 230 initiates, if it is consistent to set up the engine number of engine number that corresponding relation solicited message comprises and CML 110 itself, and CML 110, in not connecting or disconnecting state, sends and sets up corresponding relation confirmation to HET 230.
(6) HET 230 receives after this confirmation via CMET 220, if the engine number that confirmation comprises is consistent with the engine number that HET 230 itself stores, HET 230 and CML 110 set up unique corresponding relation, and set up corresponding relation successful information to CML 110 loopbacks.
(7) CML 110 receives and sets up after corresponding relation successful information, if it is consistent with this engine number to set up the engine number that corresponding relation successful information comprises, CML 110 will set up corresponding relation successful information and send to row tail terminal (TET) 130 by locomotive row tail control box (CBET) 120, on TET 130, state is shown as " connecting ", the IP address that CML 110 stores HET 230 simultaneously.
By above-mentioned steps (1)～(7), can establish the unique corresponding relation between a row vehicle module 100 and row tail vehicle module 200, only establish the unique corresponding relation between the two, the two can communicate.
Below with reference to Fig. 4, communication process between a row vehicle module 100 and row tail vehicle module 200 is described.Set up unique corresponding relation between a described row vehicle module 100 and row tail vehicle module 200 after, in a described row vehicle module 100, described row tail terminal 130 can generate train end information querying command, and this train end information querying command is sent to the locomotive row tail control box 120 of a row vehicle module 100; After the train end information querying command that locomotive row tail control box 120 receives from described row tail terminal 130, this train end information querying command is encoded, and the train end information querying command after coding is sent to vehicle-carrying communication module 110; After described vehicle-carrying communication module 110 receives the train end information querying command from described locomotive row tail control box 120, and train end information querying command is sent to described row tail vehicle module 200 via WiMAX network.In described row tail vehicle module 200, described row tail communication module 220 can receive the train end information querying command from described vehicle-carrying communication module 110, and this train end information querying command is forwarded to train tail host 230; After train tail host 230 receives the train end information querying command from described row tail communication module 220, generate train end information according to this querying command, and this train end information is sent to row tail communication module 220, described train end information is sent to described vehicle-carrying communication module 110 by this row tail communication module 220 via WiMAX network.Afterwards, the vehicle-carrying communication module 110 in a row vehicle module 100 can receive the train end information from described row tail vehicle module 200 via WiMAX network, and this train end information is sent to locomotive row tail control box 120; The train end information that locomotive row tail control box 120 receives from described vehicle-carrying communication module 110, decodes to this train end information, and decoded train end information is sent to row tail terminal 130; Row tail terminal 130 receives the train end information from locomotive row tail control box 120, and shows this train end information, thereby the staff on train can know this train end information, and operates accordingly according to this train end information.Wherein, except showing described train end information, described row tail terminal 130 can also other modes be expressed train end information to train crews, for example, by the mode of voice.
In addition, as shown in Figure 5, described row tail vehicle module 200 also can not send train end information in response to the querying command of a row vehicle module 100, but automatically generates a train end information and this train end information is sent to a row vehicle module 100 every a predetermined amount of time.Described train tail host 230 can generate a train end information every a predetermined amount of time, and this train end information is sent to row tail communication module 220; The train end information that row tail communication module 220 receives from described train tail host 230, and this train end information is sent to a described row vehicle module 100 via WiMAX network.Alternatively, if row tail vehicle module 200 receives the train end information querying command from a row vehicle module 100 during described predetermined amount of time, and in response to this order, train end information is sent to row a vehicle module 100, lifting New count predetermined amount of time in can certainly sending, and after reaching predetermined amount of time, send next train end information.Wherein, described predetermined amount of time can be set according to actual needs, for example, can be 2-3 minute, and the present invention is not limited to this, and other times scope is also feasible.
In one embodiment, if a described row vehicle module 100 is not received the train end information from described row tail vehicle module 200 after described predetermined amount of time, can send train end information querying command to described row tail vehicle module 200, to ask to obtain train end information.If a row vehicle module 100 does not receive the train end information from described row tail vehicle module 200 yet in section sometime subsequently, remind train worker by row tail terminal 130.
Once transport, train can be separated volume, and train head can separate with last vehicle of train.Process if writing to each other between CML110 and HET 230 do not do to remove, remove physically only by hand, correspondence information each other is still retained in CML 110, HET 230.When train is organized into groups again, together with CML 110 originally not necessarily can rearrange with HET 230, and the various information of train number also can be done and change, CML 110 very large may and other HET 230 between re-establish and contact, if old information is not deleted (removing corresponding relation), this HET 230 can not and new CML 110 between set up correspondence, like this HET 230 and CML 110 are organized in a train, can not find each other the other side's information, can not set up corresponding relation.Therefore, after each transport task completes, need to remove the unique corresponding relation between row a vehicle module 100 and row tail vehicle module 200, so as in the time that a row vehicle module 100 of train head to be organized into groups with other last vehicle of train the unique corresponding relation between foundation and the row tail vehicle module 200 of these other last vehicle of train.
Below with reference to Fig. 6 a, the process of removing unique corresponding relation between a row vehicle module 100 and row tail vehicle module 200 of removing is described.
(1) TET 130 sends and removes corresponding relation order to HET 230 via CBET 120 and CML 110.
(2) HET 230 receives after the order of described releasing corresponding relation via CMET 120, if the engine number that the order of releasing corresponding relation comprises is consistent with the engine number that this HET 230 stores, HET230 removes corresponding relation, and send and remove corresponding relation confirmation to CML 110 via CMET 220, delete the engine number of storage in HET 230 and the IP address of CML 110 simultaneously.
(3) CML 110 receives and removes after corresponding relation confirmation, if the engine number that releasing corresponding relation confirmation comprises is consistent with this engine number, CML 110 removes corresponding relation, delete the IP address of the HET 230 storing, and sending the information of " corresponding relation is removed " to TET 110 via CBET 120, TET 110 points out train crews " corresponding relation is removed " after receiving this information.
The releasing of described corresponding relation also can be can't help TET 130 and initiated, and is initiated by HET 230, describes the releasing process of this corresponding relation below with reference to Fig. 6 b.
(1) if HET 230 receives the shutdown command of input unit 210, to initiating to remove corresponding relation request via CMET220 to CML 110.
(2) CML 110 receives and removes after corresponding relation request, if the engine number that the request of releasing corresponding relation comprises is consistent with the engine number of storage itself, delete the IP address of the HET 230 storing, and sending the information of " corresponding relation is removed " to TET 130 via CBET 120, TET 130 points out train crews " corresponding relation is removed " after receiving this information.
The process that above-mentioned corresponding relation is removed is to carry out the state in being connected with CML 110 at HET 230, in the case of the state in not connecting of HET 230 own, if receive the shutdown command from input unit 210, the engine number that deletion is stored and the IP address of CML 110.
In the foregoing description, described train end information can be blast information.Certainly, but also other information of described train end information, the such as battery electric quantity of row tail etc., the present invention is not limited to this.
The present invention adopts OFDM/OFDMA packet-switch technology to build based on WiMAX railway wide-band mobile communication network, can accomplish covering uniformly along the line, communication between locomotive will communicate by this mobile broadband network mode, no matter how long train has, the distance of traction locomotive and last vehicle of train is how many, in wireless signal overlay area, locomotive can be connected by wireless network with train ' s tail device, and is not subject to the restriction of communication distance.The transmission of information is by the form with IP packet, the QoS mechanism of network system is guaranteed the high reliability of the information communication that priority is higher, MIMO (multiple-input, multiple-output), forward error correction (FEC), OFDM that system adopts access the technology such as (OFDMA) and automatic Modulation control AMC (Automatic Modulation Control), there is the ability of extremely strong anti-multipath fading, thereby ensure the high availability of network system itself.
Although the present invention is disclosed by above-described embodiment, but above-described embodiment is not intended to limit the present invention, any the technical staff in the technical field of the invention, without departing from the spirit and scope of the present invention, should make various variations and amendment.Therefore protection scope of the present invention should be as the criterion with the scope that appended claims was defined.
Claims (4)
1. for a train tail information transmission system for train, this system comprises:
Be listed as a vehicle module (100), be positioned at the head of described train; And
Row tail vehicle module (200), is positioned at the afterbody of described train,
It is characterized in that, this system also comprises:
Ground row tail registrar (300), pass through WiMAX network service with a described row vehicle module (100) and row tail vehicle module (200), for communicating before for both set up this unique corresponding relation between the two at a described row vehicle module (100) and described row tail vehicle module (200)
Described row tail vehicle module (200) is for gathering train end information, and by WiMAX network, described train end information sent to a described row vehicle module (100),
Wherein, a described row vehicle module (100) comprises vehicle-carrying communication module (110), locomotive row tail control box (120) and row tail terminal (130),
Wherein, vehicle-carrying communication module (110) is for receiving from the train end information of described row tail vehicle module (200) via WiMAX network, and this train end information is sent to locomotive row tail control box (120);
Locomotive row tail control box (120), for receiving the train end information from described vehicle-carrying communication module (110), is decoded to this train end information, and decoded train end information is sent to row tail terminal (130); And
Row tail terminal (130) is the train end information from locomotive row tail control box (120) for reception, and shows this train end information,
Described row tail terminal (130) generates train end information querying command, and this train end information querying command is sent to locomotive row tail control box (120);
Described locomotive row tail control box (120) receives the train end information querying command from described row tail terminal (130), this train end information querying command is encoded, and the train end information querying command after coding is sent to described vehicle-carrying communication module (110); And
Described vehicle-carrying communication module (110) receives the train end information querying command from described locomotive row tail control box (120), and train end information querying command is sent to described row tail vehicle module (200) via WiMAX network;
Wherein, described row tail vehicle module (200) comprises input unit (210), row tail communication module (220) and train tail host (230), wherein:
Input unit (210) for reader license number to train tail host (230);
Row tail communication module (220) is the train end information querying command from the vehicle-carrying communication module (110) of a described row vehicle module (100) for reception, and this train end information querying command is forwarded to train tail host (230); And
Train tail host (230), for receiving the train end information querying command from described row tail communication module (220), generate train end information according to this querying command, and this train end information is sent to row tail communication module (220), described train end information is sent to via WiMAX network to the vehicle-carrying communication module (110) of a described row vehicle module (100) by this row tail communication module (220);
Wherein, the engine number that described row tail vehicle module (200) is inputted according to described input unit (210) obtains the IP address of the described vehicle-carrying communication module (110) corresponding with this engine number to described ground row tail registrar (300) application, store afterwards this IP address, to utilize this IP address and a described row vehicle module (100) to communicate;
Described train tail host (230), using himself IP address as destination address, sends and sets up corresponding relation solicited message to described vehicle-carrying communication module (110) via described row tail communication module (220);
Described vehicle-carrying communication module (110) is received described foundation after corresponding relation solicited message, set up the engine number that corresponding relation solicited message comprises if described consistent with the engine number of described vehicle-carrying communication module (110) itself, and described vehicle-carrying communication module (110), in not connecting or disconnecting state, sends and sets up corresponding relation confirmation to described train tail host (230);
Described train tail host (230) is received described foundation after corresponding relation confirmation, if it is consistent with the engine number of described train tail host (230) storage itself that this sets up the engine number that corresponding relation confirmation comprises, described train tail host (230) is set up unique corresponding relation with described vehicle-carrying communication module (110).
2. train tail information transmission system according to claim 1, wherein, described input unit (210) is infrared confirmation instrument, keyboard or touch-screen.
3. train tail information transmission system according to claim 1, wherein, a described row vehicle module (100) or described row tail vehicle module (200) initiate to remove the request of unique corresponding relation to the other side.
4. train tail information transmission system according to claim 1, wherein, described train end information is blast information.
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| CN201010589349.5A CN102158829B (en) | 2010-12-15 | 2010-12-15 | Train tail information transmission system for train |
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| CN103552582A (en) * | 2013-10-30 | 2014-02-05 | 天津七一二通信广播有限公司 | Method for achieving train tail information forwarding function through train tail forwarding station |
| CN112182035A (en) * | 2019-07-05 | 2021-01-05 | 株洲中车时代电气股份有限公司 | Train tail wind pressure query method, device, medium and equipment |
| CN111741132B (en) * | 2020-08-14 | 2020-11-24 | 北京全路通信信号研究设计院集团有限公司 | Column head-column tail pairing method and system suitable for IP communication |
| CN112445803B (en) * | 2020-12-09 | 2022-08-16 | 卡斯柯信号有限公司 | IP matching method and system for dynamic column head and column tail |
| CN112590861A (en) * | 2020-12-15 | 2021-04-02 | 中国国家铁路集团有限公司 | Be applied to safe train tail equipment of train integrality inspection |
| CN115515086B (en) * | 2022-11-22 | 2023-03-21 | 安徽星云互联科技有限责任公司 | Vehicle-mounted communication system, method, equipment and storage medium |
| CN115884128B (en) * | 2023-02-09 | 2023-05-23 | 北京全路通信信号研究设计院集团有限公司 | Train cross-core network communication method, device, equipment and storage medium |
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