WO2014141361A1 - 列車情報管理装置 - Google Patents
列車情報管理装置 Download PDFInfo
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- WO2014141361A1 WO2014141361A1 PCT/JP2013/056633 JP2013056633W WO2014141361A1 WO 2014141361 A1 WO2014141361 A1 WO 2014141361A1 JP 2013056633 W JP2013056633 W JP 2013056633W WO 2014141361 A1 WO2014141361 A1 WO 2014141361A1
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- terminal device
- transmission line
- trunk transmission
- vehicle
- transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40169—Flexible bus arrangements
- H04L12/40176—Flexible bus arrangements involving redundancy
- H04L12/40182—Flexible bus arrangements involving redundancy by using a plurality of communication lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40293—Bus for use in transportation systems the transportation system being a train
Definitions
- the present invention relates to a train information management device.
- Trains in recent years are equipped with a train information management device that monitors the operation status of train-equipped equipment (hereinafter referred to as “equipment”) such as brakes and air conditioners and controls the operation of each equipment individually.
- the train information management device is composed of a central device and a terminal device.
- the control packet for device control generated by the central device is relayed by the terminal device and transmitted to each device, so that the train can be operated efficiently. Realized. Therefore, increasing the reliability of the transmission system including the train information management device is an important issue from the viewpoint of realizing comfortable and efficient operation of the train.
- Patent Document 1 The prior art disclosed in the following Patent Document 1 is such that, for example, a terminal device installed in the No. 2 car detects that information from one basic transmission line has been interrupted, and transmits data from the other basic transmission line to one basic transmission. The data is transferred to the road by broadcast, and the terminal device provided in the third car receives this data and transfers it to the other trunk transmission line by broadcast. As described above, in the prior art, high reliability is ensured by the terminal device transferring data when an abnormality occurs in the main transmission path.
- Patent Document 1 has a problem in that, when an abnormality occurs in the trunk transmission line, data is transferred by broadcast, so that there is a possibility that the network load increases and the transmission quality decreases. It was.
- This invention is made in view of the above, Comprising: It aims at obtaining the train information management apparatus which can transmit a control packet, without increasing the traffic of the duplexed trunk transmission path.
- the present invention provides a first trunk transmission line disposed over a plurality of vehicles constituting a train formation and the first trunk transmission line disposed over each vehicle.
- a second trunk transmission line that forms a redundant system of the trunk transmission path and manages information transmitted in the train, and to the first trunk transmission path and the second trunk transmission path
- a plurality of terminal devices that collect state information from devices installed in each vehicle, wherein the central device transmits the control information of the devices to the first core transmission.
- each terminal device outputs the state information to the first and second backbone transmission lines, and is a terminal mounted on one vehicle. The device is output from a terminal device mounted on another vehicle.
- the control information is transferred by unicast to the terminal device on the opposite side to the central device side using the one basic transmission line.
- the terminal device transfers the control packet from the central device by unicast, it is possible to transmit the control packet without increasing the traffic on the duplexed trunk transmission line. Play.
- FIG. 1 is a diagram schematically showing a train information management apparatus according to an embodiment of the present invention.
- FIG. 2 is a configuration diagram of the transmission control unit.
- FIG. 3 is a diagram for explaining the operation of the train information management apparatus when the trunk transmission line is normal.
- FIG. 4 is a diagram for explaining the operation of the train information management apparatus when an abnormality occurs in the trunk transmission line.
- FIG. 1 is a diagram schematically showing a train information management apparatus according to an embodiment of the present invention.
- FIG. 2 is a configuration diagram of the transmission control unit 100.
- a system 1 main transmission line 1 that is a main system main transmission line and a system 2 main transmission line 2 that is a subordinate system transmission line are arranged.
- the 1-system trunk transmission path 1 and the 2-system trunk transmission path 2 constitute a trunk network and are, for example, LAN (local area network) trunk lines using Ethernet (registered trademark).
- the number of vehicles is not limited to the illustrated example.
- the first vehicle (for example, No. 1 car) includes a 1-system central device 11-1 that is a main central device that constitutes a train information management device, and a 2-system central that is a secondary central device that constitutes a train information management device.
- the device 11-2 is mounted. It is assumed that the other leading vehicle of the train is also provided with a device equivalent to the first system central device 11-1 and the second system central device 11-2.
- the 1-system central apparatus 11-1 and the 2-system central apparatus 11-2 are connected to the 1-system trunk transmission line 1 and the 2-system trunk transmission path 2 via hubs 3 and 4, respectively.
- the system 1 central device 11-1 and the system 2 central device 11-2 monitor the soundness of each other. For example, when the system 1 central device 11-1 fails, the system 1 central device 11-1
- the detected second system central apparatus 11-2 performs the same operation as the first system central apparatus 11-1.
- the central device 11 (11-1, 11-2) has a function of collecting information on the state of the equipment and managing it collectively, and notifying the crew of the state of the equipment.
- the information managed by the central device 11 includes, for example, the BC pressure of the brake device detected and collected by each vehicle, speed information, a door opening command, and the like. If these pieces of vehicle information to be collectively managed in the entire formation are individually managed by the terminal device, there is a possibility that the operations in the respective vehicles are not aligned. Accordingly, the vehicle information that should be managed collectively for the entire train is managed by each central device 11.
- the central apparatus 11 generates a control packet A by assigning, for example, the IP address of each terminal apparatus as destination information to the control information for controlling the device.
- the control packet A is generated at a predetermined cycle and sent to the 1-system trunk transmission line 1 and the 2-system trunk transmission path 2.
- Vehicles other than the leading vehicle are equipped with a main terminal device (system 1 terminal device) constituting the train information management device and a standby system terminal device (system 2 terminal device) constituting the train information management device.
- the system 2 terminal device is configured in the same manner as the system 1 terminal device, but when the system 1 terminal device fails, the system 2 terminal device performs the same operation as the system 1 terminal device.
- Car 1 is equipped with a 1-system terminal device 21-1 and a 2-system terminal device 21-2
- Car 3 is equipped with a 1-system terminal device 31-1 and a 2-system terminal device 31-2.
- 1 system terminal device 41-1 and 2 system terminal device 41-2 are mounted.
- Each terminal device is connected to the 1-system trunk transmission path 1 and the 2-system trunk transmission path 2 via hubs 3 and 4, respectively.
- Each terminal device collects status information from the device, and each terminal device generates a status information packet B in response to the control packet A.
- the status information packet B includes a header indicating the transmission destination (central device 11) of the status information packet B, a device ID uniquely indicating the transmission source device of the status information, device status information (current temperature in the case of an air conditioner), and the like. Is included.
- the status information packet B is generated at a predetermined period and sent to the 1-system trunk transmission path 1 and the 2-system trunk transmission path 2.
- the transmission control unit 100 of each terminal device includes an abnormality detection unit 101, a transfer control unit 102, and a table 103.
- the function of the eyelid abnormality detection unit 101 will be described. For example, when an abnormality occurs in the 2nd system transmission line 2 between the 2nd car and the 3rd car, it is output from the 1st system terminal device 31-1 of the 3rd car to the 1st system transmission line 1 and the 2nd system transmission line 2.
- the status information packet B is not transmitted to the second-system trunk transmission line 2 between the second car and the third car. Accordingly, the abnormality detection unit 101 of the system 2 terminal device 21-2 is connected to the system 1 transmission line 1 in the transmission cycle of the status information packet B (for example, the cycle in which the status information packet B is generated).
- the IP address of each connection port and the transfer destination of the control packet A are recorded in association with each other.
- the transfer destination of the control packet A set in the table 103 is, for example, a terminal device (for example, an adjacent terminal device on the opposite side to the central device side of the terminal device (for example, the second system terminal device 21-2) that has received the status information packet B (for example, 2 system terminal device 31-2).
- the transfer destination of the control packet A is not limited to the system 1 terminal device
- the processing load of the system 2 terminal device is smaller than the processing load of the system 1 terminal device. By doing so, resources can be used effectively, the processing load of the 1-system terminal device can be reduced, and stable transmission quality can be ensured.
- the transfer control unit 102 refers to the table 103 to determine the transfer destination of the control packet A transmitted from the central apparatus 11, and this transfer destination Is set in the control packet A, and the control packet A is transferred to the trunk transmission line opposite to the trunk transmission line where the abnormality is detected.
- FIG. 3 is a diagram for explaining the operation of the train information management apparatus when the trunk transmission line is normal.
- Each central device mounted on each leading vehicle of the train transmits a control packet, and one of these is defined as an “effective control packet”.
- the definition method is, for example, “when the operation key (Key) is inserted into the master controller (not shown) of the cab of the leading vehicle, the control packet transmitted by the central device of the vehicle is regarded as an effective control packet. Or “If the driving key is not inserted into the master controller of any of the leading vehicle's cabs, the control packet transmitted by the central device of the first car is regarded as a valid control packet”.
- the method defined as “effective control packet” is composed of several conditions. Although details are omitted, each terminal device detects “effective control packet” according to this definition method.
- the control packet transmitted by the first car shown in FIG. 3 will be described as an “effective control packet”.
- the control packet A generated by the first-system central apparatus 11-1 is output to the first-system trunk transmission line 1 and the second-system trunk transmission path 2.
- This packet is a broadcast packet and can be received by all terminal devices (and other central devices) connected to the 1-system trunk transmission path 1 and the 2-system trunk transmission path 2.
- each terminal apparatus When there is no abnormality in the 1-system trunk transmission line 1, the 2 system trunk transmission path 2, the hub 3 and the hub 4, each terminal apparatus receives and receives the control packet A from the 1-system central apparatus 11-1.
- the control packet A is relayed to a device (not shown) connected to the terminal device, and each device operates in accordance with the control information included in the control packet A.
- each terminal device state information from the device is collected, and a state information packet B is generated in response to the control packet A.
- the status information packet B includes status information on all connected devices, connection status of each device (presence of disconnection), status information of the terminal device itself, and the like.
- the generated status information packet B is sent out to the 1-system trunk transmission line 1 and the 2-system trunk transmission path 2.
- This packet is a broadcast packet and can be received by all central devices (and other terminal devices) connected to the 1-system trunk transmission path 1 and the 2-system trunk transmission path 2.
- FIG. 4 is a diagram for explaining the operation of the train information management apparatus when an abnormality occurs in the trunk transmission line.
- FIG. 4 shows a state where an abnormality has occurred in the second-system trunk transmission line 2 between the second car and the third car, for example, in order to explain an example of the abnormality that has occurred in the transmission system.
- a case where an abnormality has occurred in the trunk transmission line has been described as an example.
- a transmission system for example, hubs 3 and 4
- the transfer operation by the transmission control unit 100 can be applied.
- the status information packet B output from the first-system terminal device 31-1 of the third car to the first-system trunk transmission line 1 is 2
- the data is normally received by the system terminal device 21-2.
- the status information packet B output to the second-system trunk transmission line 2 from the first-system terminal device 31-1 of the third car is not normally received by the second-system terminal device 21-2.
- the second system terminal device 21-2 When the second system terminal device 21-2 receives the status information packet B from the first system terminal device 31-1 only at the connection port of the first system trunk transmission line 1, the second system terminal device 21-2 It detects that an abnormality has occurred in the second-system trunk transmission line 2.
- the second-system terminal device 21-2 that has detected this abnormality is adjacent to the terminal device (second-system terminal device 21-2) that has received the status information packet B on the opposite side to the central device side. 31-2 is determined as the transfer destination of the control packet A. Then, the control packet A output from the system 1 central device 11-1 to the system 2 backbone transmission line 2 is transferred to the system 1 terminal device 31-1 by unicast using the system 1 backbone transmission line 1.
- the terminal device (second-system terminal device 21-2 in the illustrated example) mounted on one vehicle receives the state information B from the terminal device (first-system terminal device 31-1) mounted on the other vehicle.
- the terminal device When receiving from only the basic transmission line (system 1 basic transmission line 1), the other basic transmission line (No. 2 car) between the terminal device mounted on one vehicle and the terminal device mounted on the other vehicle A terminal device that detects an abnormality in the second-system trunk transmission line 2) between the third car and the control information A mounted on another vehicle using the trunk transmission path on the opposite side of the trunk transmission path that has detected the abnormality. Forward to unicast.
- a terminal device that has detected an abnormality in the main trunk transmission line is configured to forward a control packet from the central device by broadcast.
- the second-system terminal device 21-2 in FIG. 4 transfers the control packet A to the first-system trunk transmission line 1 by broadcast.
- the control packet A is transmitted not only to the 1-system trunk transmission path 1 between the 2nd car and the 3rd car but also to the 1-system trunk transmission path 1 after the 3rd car.
- Network load increases.
- the second-system terminal device 21-2 transfers the control packet A to the first-system trunk transmission line 1 by unicast. It does not occur.
- the second system terminal 31-2 of No. 3 car for example, has a time that is an integral multiple of the transmission period of the control packet A (for example, the period at which the control packet A is generated) (for example, twice the transmission period of the control packet A) If the control packet A is not received at the connection port 8 even after the elapse of time), the control packet A from the 1-system trunk transmission line 1 is sent to the opposite-side trunk transmission path (2-system trunk transmission path 2 in the illustrated example). Transfer by broadcast. As a result, the control packet A is transmitted to the system 1 terminal device 31-1, the system 1 terminal device 41-1, and the system 2 terminal device 41-2.
- each terminal device after the fourth car cannot receive the control packet A.
- the second-system terminal device 31-2 of the third car transmits the control packet A by broadcast using the second-system trunk transmission line 2. Therefore, each terminal device after the fourth car can receive the control packet A.
- the transfer control unit 102 of each terminal device has a central device (1 of the first car in FIG. 4) that is the transmission source of the control packet A.
- a transfer waiting time is set according to the distance between the central system 11-1) and the vehicle that receives the control packet A. For example, in the second system terminal device 21-2 of the second car, for example, a time twice as long as the transmission period of the control packet A is set as the transfer waiting time, and this transmission period is set in the second system terminal apparatus 31-2 of the third car. Is set as a transfer waiting time, and in the second-system terminal device 41-2 of the fourth car, a time four times the transmission cycle is set as a transfer waiting time.
- the second system terminal device 41-2 of No. 4 car performs the transfer operation only when the control packet A is received after the transfer waiting time set in the second system terminal device 41-2 elapses. That is, if the control packet A is received before the transfer waiting time elapses, the second-system terminal device 41-2 interrupts the transfer operation.
- the terminal device for example, the second system terminal device 31-2
- the transfer destination of the control packet A is not limited to the adjacent terminal device.
- the first system terminal device 31-1 of the third car fails, the status information packet B from the first system terminal apparatus 31-1 does not reach the second system terminal device 21-2.
- the status information packet B output from the second system terminal device 41-2 is received by the second system terminal device 21-2.
- the second-system terminal device 21-2 specifies the transfer destination of the control packet A based on the transmission source information included in the status information packet B, and the control packet A is sent to the second-system terminal device 41-2. Is transferred by unicast.
- the train information management apparatus includes the first trunk transmission line (system 1 trunk transmission line 1) arranged over a plurality of vehicles constituting the train organization and each vehicle.
- a central device for managing information transmitted to the train connected to a second trunk transmission line (second trunk transmission path 2) which is disposed and forms a redundant system of the first trunk transmission path; and a first trunk
- a train information management device comprising: a plurality of terminal devices that collect state information (state information packet B) from devices connected to the transmission line and the second backbone transmission line and installed in each vehicle;
- the central device outputs device control information (control packet A) to the first trunk transmission path and the second trunk transmission path, and each terminal device sends status information to the first trunk transmission path and the second trunk transmission path.
- a terminal device that outputs to the transmission line and is mounted on one vehicle (for example, 1
- the system terminal device 21-1 or the system 2 terminal device 21-2) is a terminal device mounted on another vehicle (for example, the system 1 terminal device 31-1 or system 1 terminal device 31-1).
- the status information output from the terminal device is received from only one basic transmission line (for example, the 1-system basic transmission line 1), it is between the terminal device mounted on one vehicle and the terminal device mounted on another vehicle.
- An abnormality in the main transmission line (for example, the second system main transmission line 2 between the second car and the third car) is detected, and control information is transmitted to the central device side using one main transmission line (the first system main transmission line 1). Is configured to transfer to the terminal device on the opposite side by unicast.
- the control packet A is transferred to at least the terminal device of the third car.
- Each terminal device is divided into a first terminal device and a second terminal device forming a redundant system of the first terminal device, and a first terminal device (for example, a 1-system terminal) mounted on one vehicle.
- the device 21-1) does not transfer the control information
- the second terminal device for example, the second system terminal device 21-2
- the second terminal device installed in one vehicle has the control information on the side opposite to the central device side. It is configured to transfer in a unicast manner to either one of the terminal devices (for example, the first-system terminal device 31-1) or the second terminal device (for example, the second-system terminal device 31-2).
- the processing load on the system 1 terminal device for example, system 2 terminal device 21-2
- stable transmission quality can be ensured.
- the main transmission line for example, A terminal device other than the second terminal device mounted on another vehicle (for example, the 1-system terminal device 41-1 and the 2-system terminal device 41) using the basic transmission line opposite to the 1-system backbone transmission line 1) -2 etc.
- the processing load on the system 1 terminal device is reduced, and stable transmission quality can be ensured.
- Each terminal device is set with a transfer waiting time that increases in proportion to the distance between the central device and the vehicle on which each terminal device is installed.
- Either the terminal device 31-1 or the second system terminal device 31-2) receives the control information transmitted by unicast after the transfer waiting time has elapsed, and the backbone transmission path that has received this control information. It is configured to transfer by broadcast to another terminal device (for example, the 1-system terminal device 41-1 etc.) using the trunk transmission line on the opposite side.
- another terminal device for example, the 1-system terminal device 41-1 etc.
- the train information management apparatus shown in this embodiment shows an example of the content of the present invention, and can be combined with another known technique, and does not depart from the gist of the present invention.
- it is possible to change the configuration such as omitting a part of the range.
- the present invention can be applied to a train information management device applied to a train in which a trunk transmission line is duplicated, and in particular, an invention capable of transmitting a control packet without increasing traffic on the trunk transmission path. Useful as.
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Abstract
Description
図1は、本発明の実施の形態にかかる列車情報管理装置を模式的に示した図である。図2は、伝送制御部100の構成図である。図1には、主系基幹伝送路である1系基幹伝送路1と、従系基幹伝送路である2系基幹伝送路2とが配設されている。1系基幹伝送路1および2系基幹伝送路2は、基幹ネットワークを構成し、例えばイーサネット(登録商標)を使用したLAN(ローカルエリアネットワーク)幹線である。なお、車両台数は図示例に限定されない。
用される列車情報管理装置に適用可能であり、特に、基幹伝送路のトラフィックを増大させることなく制御パケットを伝送可能な発明として有用である。
Claims (4)
- 列車の編成を構成する複数の車両にわたって配設された第1の基幹伝送路と前記各車両にわたって配設され前記第1の基幹伝送路の冗長系を成す第2の基幹伝送路とに接続され列車内に伝送される情報を管理する中央装置と、前記第1の基幹伝送路と前記第2の基幹伝送路とに接続され前記各車両に設置された機器からの状態情報を収集する複数の端末装置と、を備えた列車情報管理装置であって、
前記中央装置は、前記機器の制御情報を前記第1の基幹伝送路および前記第2の基幹伝送路に出力し、
前記各端末装置は、前記状態情報を前記第1の基幹伝送路および前記第2の基幹伝送路に出力し、
一の車両に搭載された端末装置は、他の車両に搭載された端末装置から出力された前記状態情報を一方の基幹伝送路のみから受信したとき、前記一の車両に搭載された端末装置と前記他の車両に搭載された端末装置との間における基幹伝送路の異常を検知し、前記一方の基幹伝送路を用いて前記制御情報を前記中央装置側とは反対側の端末装置へユニキャストで転送することを特徴とする列車情報管理装置。 - 前記各端末装置は、第1の端末装置と第1の端末装置の冗長系を成す第2の端末装置とに区分され、
前記一の車両に搭載された第1の端末装置は、前記制御情報を転送せず、
前記一の車両に搭載された第2の端末装置は、前記制御情報を前記中央装置側とは反対側の第1の端末装置または第2の端末装置の何れかへユニキャストで転送することを特徴とする請求項1に記載の列車情報管理装置。 - 前記他の車両に搭載された第2の端末装置は、前記ユニキャストで転送された制御情報を受信したとき、この制御情報を受信した基幹伝送路とは反対側の基幹伝送路を用いて、前記他の車両に搭載された第2の端末装置以外の端末装置へブロードキャストで転送することを特徴とする請求項2に記載の列車情報管理装置。
- 前記各端末装置には、前記中央装置と前記各端末装置が設置された車両との間の距離に比例して長くなる転送待ち時間が設定され、
前記他の車両に搭載された端末装置は、前記ユニキャストで転送された制御情報を、前記転送待ち時間が経過した後に受信した場合のみ、この制御情報を受信した基幹伝送路とは反対側の基幹伝送路を用いて他の端末装置へブロードキャストで転送することを特徴とする請求項1~3の何れか1つに記載の列車情報管理装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2013/056633 WO2014141361A1 (ja) | 2013-03-11 | 2013-03-11 | 列車情報管理装置 |
EP13878228.9A EP2975776A4 (en) | 2013-03-11 | 2013-03-11 | TRAIN INFORMATION MANAGEMENT DEVICE |
US14/655,980 US20150341204A1 (en) | 2013-03-11 | 2013-03-11 | Train-informati0n management device |
CN201380074435.4A CN105027455B (zh) | 2013-03-11 | 2013-03-11 | 列车信息管理装置 |
JP2013526260A JP5349717B1 (ja) | 2013-03-11 | 2013-03-11 | 列車情報管理装置 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2016181536A1 (ja) * | 2015-05-13 | 2016-11-17 | 三菱電機株式会社 | 列車内伝送制御システム及び中継装置 |
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WO2015111223A1 (ja) * | 2014-01-27 | 2015-07-30 | 三菱電機株式会社 | 通信装置、列車ネットワークシステムおよびネットワーク設定方法 |
WO2018055732A1 (ja) * | 2016-09-23 | 2018-03-29 | 三菱電機株式会社 | 端末装置、中央装置、列車情報管理システムおよび列車情報管理方法 |
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- 2013-03-11 CN CN201380074435.4A patent/CN105027455B/zh not_active Expired - Fee Related
- 2013-03-11 US US14/655,980 patent/US20150341204A1/en not_active Abandoned
- 2013-03-11 JP JP2013526260A patent/JP5349717B1/ja active Active
- 2013-03-11 WO PCT/JP2013/056633 patent/WO2014141361A1/ja active Application Filing
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JP2004172943A (ja) | 2002-11-20 | 2004-06-17 | Hitachi Ltd | 情報伝送システム及び情報伝送方法 |
JP2005159604A (ja) * | 2003-11-25 | 2005-06-16 | Hitachi Ltd | 情報伝送システム及び情報伝送方法 |
JP2006197114A (ja) * | 2005-01-12 | 2006-07-27 | Hitachi Ltd | 情報伝送システム、鉄道車両用情報伝送システム及び車両用情報伝送端末装置 |
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Cited By (2)
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WO2016181536A1 (ja) * | 2015-05-13 | 2016-11-17 | 三菱電機株式会社 | 列車内伝送制御システム及び中継装置 |
JPWO2016181536A1 (ja) * | 2015-05-13 | 2017-10-12 | 三菱電機株式会社 | 列車内伝送制御システム及び中継装置 |
Also Published As
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US20150341204A1 (en) | 2015-11-26 |
EP2975776A1 (en) | 2016-01-20 |
EP2975776A4 (en) | 2016-04-06 |
JP5349717B1 (ja) | 2013-11-20 |
CN105027455A (zh) | 2015-11-04 |
CN105027455B (zh) | 2017-05-03 |
JPWO2014141361A1 (ja) | 2017-02-16 |
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