JP2005175904A - Network system for railroad vehicle, and communication method therefor - Google Patents
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本発明は、鉄道車両用ネットワークシステム及びそれにおける通信方法に関する。 The present invention relates to a railway vehicle network system and a communication method therefor.
図８に示すような従来の鉄道車両用ネットワークシステムでは、異なる車両編成１，２を併結する場合、各車両編成内の伝送装置１１，２１とは別に車両編成間の伝送装置３１，３２を設けることにより車両編成間併結時のネットワークの再構築を行うようにしている。 In the conventional railway vehicle network system as shown in FIG. 8, when different vehicle formations 1 and 2 are combined, transmission devices 31 and 32 between the vehicle formations are provided separately from the transmission devices 11 and 21 in each vehicle formation. By doing so, the network is reconstructed when the vehicle formations are combined.
ところが、このような従来の鉄道車両用ネットワークシステムでは、車両編成間のネットワーク再構築のために各編成内の通信とは別に車両編成間の通信のためのネットワークを別途に備える必要があり、製造において儀装が増え、伝送制御用のポートも編成間専用に必要になるためハードウェア構成、システム構成が複雑である問題点があった。また、併結する車両の車種などによって併結処理を区別する必要があり、併結時の信号も車種によって異なったものにする必要があるため、併結車種が限定されかつ制御が複雑になってしまう問題点もあった。 However, in such a conventional railway vehicle network system, it is necessary to separately provide a network for communication between vehicle formations separately from communication within each formation for network reconstruction between vehicle formations. However, there is a problem in that the hardware configuration and the system configuration are complicated because the number of equipment is increased and a port for transmission control is also required for the composition. In addition, it is necessary to distinguish the merging process depending on the type of vehicle to be merged, and the signal at the time of merging also needs to be different depending on the type of vehicle, so that the type of merging vehicle is limited and the control becomes complicated There was also.
本発明はこのような従来の技術的課題に鑑みてなされたもので、インターネットプロトコルであるＴＣＰ／ＩＰまたはＵＤＰ／ＩＰを使用した伝送システムを採用し、車両編成内の伝送装置はもちろんのこと車両編成間にまたがった場合でも各伝送装置がどの編成のどの伝送装置であるかが判るように各伝送装置にユニークなＩＰアドレスの割り付けを行うことにより、異なる車両編成を併結した場合でも、編成内ネットワークを車両編成間で接続するだけで簡単に編成間ネットワークを構築することができ、またその分割も簡単な鉄道車両用ネットワークシステム及びそれにおける通信方法を提供することを目的とする。 The present invention has been made in view of such a conventional technical problem, adopts a transmission system using TCP / IP or UDP / IP, which is an Internet protocol, and not only a transmission apparatus in a vehicle organization but also a vehicle. Even when different vehicle formations are connected together by assigning a unique IP address to each transmission device so that it can be understood which transmission device of which organization each transmission device is known even when straddling between formations. It is an object of the present invention to provide a railway vehicle network system and a communication method therefor, in which a network between trains can be easily constructed simply by connecting the networks between vehicle trains.
請求項１の発明は、インターネットプロトコルであるＴＣＰ／ＩＰまたはＵＤＰ／ＩＰを採用する鉄道車両用ネットワークシステムにおいて、ＩＰアドレスの３バイト目及び４バイト目を車両編成識別番号と伝送装置識別番号とするＩＰアドレスを持つ複数の伝送装置それぞれを各車両ごとに配備し、伝送路で互いに接続したことを特徴とするものである。 According to the first aspect of the present invention, in the railway vehicle network system adopting the Internet protocol TCP / IP or UDP / IP, the third byte and the fourth byte of the IP address are used as the vehicle organization identification number and the transmission device identification number. A plurality of transmission apparatuses having IP addresses are provided for each vehicle and are connected to each other through a transmission path.
請求項２の発明は、請求項１の鉄道車両用ネットワークシステムにおいて、車両編成間の併結制御又は分割制御の途中で車両編成間の伝送装置の送受信の許可、禁止を制御する手段を備えたことを特徴とするものである。 According to a second aspect of the present invention, in the railway vehicle network system according to the first aspect, a means for controlling permission / prohibition of transmission / reception of the transmission device between the vehicle formations in the middle of the merge control or division control between the vehicle formations is provided. It is characterized by.
請求項３の発明は、インターネットプロトコルであるＴＣＰ／ＩＰまたはＵＤＰ／ＩＰを採用する鉄道車両用ネットワークシステムにおける通信方法であって、ＩＰアドレスの３バイト目及び４バイト目を車両編成識別番号と伝送装置識別番号とするＩＰアドレスを各車両の伝送装置に割り当てるステップと、異なる車両編成を併結する場合において、併結面の伝送装置が併結状態を認識して自編成内の全伝送装置に併結制御開始を通知するステップと、編成内の他伝送装置が併結制御開始の通知を受信したときに、それまで動作していた伝送を一時停止状態とし、併結制御モードに移行し、併結面の伝送装置に対して応答を送信するステップと、前記併結面伝送装置が他の全伝送装置からの応答を確認した後、併結面側の伝送を許可状態に設定し、相手編成とのデータの送受信を可能な状態に設定するステップと、前記併結面伝送装置が前記データの送受信を可能な状態に設定した後、自編成内の編成情報を付加した編成情報編集要求を併結後の先頭となる号車の伝送装置に送信するステップと、前記併結後の先頭となる号車の伝送装置が２つの併結面伝送装置からの前記編成情報編集要求を受信した後、付加されたそれぞれの編成の編成情報から併結後の編成情報の編集を行うステップと、前記併結後の先頭となる号車の伝送装置が前記併結後の編成情報の編集を完了した後、全伝送装置に対して編集後の編成情報を付加した編成情報更新要求を送信するステップと、編成情報更新要求を受信した先頭号車以外の各伝送装置が自装置に保持している編成情報を前記付加された併結後の編成情報に更新した後、応答を送信するステップと、前記併結後の先頭となる号車の伝送装置が他の全伝送装置からの応答を受信した後、全伝送装置に対して併結制御終了を送信するとともに自装置も併結制御終了として伝送を開始するステップと、併結終了を受信した各伝送装置が併結制御モードから通常の伝送モードに復帰し、伝送を再開するステップとを有することを特徴とするものである。 The invention of claim 3 is a communication method in a railway vehicle network system adopting the Internet protocol TCP / IP or UDP / IP, in which the third byte and the fourth byte of the IP address are transmitted with a vehicle organization identification number and transmission. Assigning an IP address as a device identification number to the transmission device of each vehicle, and when combining different vehicle formations, the transmission device on the combined surface recognizes the combined state and starts the combined control to all the transmission devices in the own organization When the other transmission device in the train receives the notification of the start of the merge control, the transmission that has been operating until then is suspended, and the mode is changed to the merge control mode. A response is sent to the combined plane transmission device, and after confirming the responses from all other transmission devices, the combined plane transmission is permitted. A step of setting the data transmission / reception to / from the partner organization to a state where the data can be transmitted / received; A step of transmitting an editing request to the transmission device of the leading car after the merge, and a transmission device of the leading car after the merged after receiving the organization information editing request from the two merged surface transmission devices; A step of editing the knitting information after merging from the knitting information of each knitted knitting, and after the transmission device of the first car after the merging completes editing of the knitting information after the merging, A step of transmitting a composition information update request with the edited composition information added thereto, and the composition information held by each transmission device other than the first car that has received the composition information update request in its own device. After updating to the later organization information, the step of transmitting a response, and after the transmission device of the first car after the combination receives a response from all other transmission devices, the merge control ends for all the transmission devices And the own device also starts transmission at the end of the merge control, and each transmission device that has received the merge completion returns from the merge control mode to the normal transmission mode and resumes transmission. It is what.
請求項４の発明は、請求項３の鉄道車両用ネットワークシステムにおける通信方法において、未併結状態である両先頭車の併結面の伝送装置が併結による編成間の伝送路の接続が完了するまで編成間の伝送を禁止状態に設定しておくことを特徴とするものである。 According to a fourth aspect of the present invention, in the communication method in the railcar network system according to the third aspect, the transmission devices on the merged surfaces of the two leading vehicles that are in an uncoupled state are knitted until the connection of the transmission path between the knitting is completed. It is characterized in that the transmission between them is set to a prohibited state.
請求項５の発明は、請求項４の鉄道車両用ネットワークシステムにおける通信方法において、それぞれの車両編成の併結面の伝送装置が親となり編成内の各伝送装置に一時伝送を停止する要求を送信するステップと、各伝送装置からの応答を確認した後、編成間の送受信を許可状態にするステップと、併結後の先頭車両となる号車の伝送装置に各編成の編成情報を送信するステップと、両併結面からの編成情報を受信した先頭車両となる号車の伝送装置が併結後の編成情報を作成し、他の全伝送装置に併結後の編成情報を送信するステップと、前記他の全伝送装置から併結後の編成情報受信の応答を確認した後、併結制御終了を送信し、停止していた他の伝送を再開させるステップとを有することを特徴とするものである。 According to a fifth aspect of the present invention, in the communication method in the railway vehicle network system according to the fourth aspect, the transmission device on the combined surface of the respective vehicle formations becomes a parent, and a request to stop temporary transmission is transmitted to each transmission device in the formation. After confirming the response from each transmission device, allowing the transmission / reception between the trains to be permitted, sending the train composition information of each train to the transmission device of the car that becomes the leading vehicle after the combination, The transmission device of the car that is the leading vehicle that has received the knitting information from the merged surface creates the knitted information after merging, and transmits the knitted information after merging to all other transmission devices, and all the other transmission devices After confirming the response of receiving the composition information after merging, sending a termination of merging control and resuming other transmissions that have been stopped.
請求項６の発明は、請求項３の鉄道車両用ネットワークシステムにおける通信方法において、前記鉄道車両用ネットワークシステムは、編成内ネットワーク構成を１系と２系の二重系構成とし、１系２系間を梯子状に接続する梯子型ネットワークシステムであり、かつ、１系２系間のデータ授受を行い、互いの情報を常時授受するためのシリアル回線を各伝送装置が備えていて、併結制御異常によりいずれかの伝送装置が迂回伝送経路として徴用されたときに、当該伝送装置が相手系の併結情報をチェックして自系伝送装置内の併結後の編成情報を更新することを特徴とするものである。 The invention of claim 6 is the communication method in the railway vehicle network system according to claim 3, wherein the railway vehicle network system has a system configuration in which the in-formation network configuration is a dual system configuration of 1 system and 2 systems. It is a ladder type network system that connects between each other in the form of a ladder, and each transmission device is equipped with a serial line to exchange data between the 1 system and 2 systems, and to constantly exchange each other's information. When one of the transmission devices is used as a bypass transmission path, the transmission device checks the merging information of the partner system and updates the knitting information after the merging in the own system transmission device. It is.
請求項７の発明は、請求項３の鉄道車両用ネットワークシステムにおける通信方法において、複数の車両編成を併結した状態で起動した場合に、個々の編成を単独編成として起動させるステップと、編成内の反対の併結面の状態をチェックするステップと、両併結面とも併結要求がオンになっているときには先頭車側の編成を優先し、１編成ずつ併結制御を実行するステップとを有することを特徴とするものである。 According to a seventh aspect of the present invention, in the communication method in the railway vehicle network system according to the third aspect, when a plurality of vehicle formations are started in a combined state, the individual formations are started as a single formation, A step of checking the state of the opposite merged surface, and a step of executing the merge control one by one with priority given to the knitting on the leading vehicle side when the merge request is turned on for both merged surfaces. To do.
請求項８の発明は、インターネットプロトコルであるＴＣＰ／ＩＰまたはＵＤＰ／ＩＰを採用する鉄道車両用ネットワークシステムにおける通信方法であって、ＩＰアドレスの３バイト目及び４バイト目を車両編成識別番号と伝送装置識別番号とするＩＰアドレスを各車両の伝送装置に割り当てるステップと、併結されている車両編成を分割する場合において、分割面側の伝送を禁止状態とするステップと、分割面の伝送装置が分割後の自編成内の全伝送装置に分割制御開始を通知するステップと、各編成内の伝送装置が分割制御開始の通知を受信して、それまで動作していた伝送を一時停止状態として分割制御モードに移行し、前記分割面の伝送装置に対して応答を送信するステップと、前記分割面の伝送装置が他の全伝送装置からの応答を確認した後、分割後の編成情報を編集するステップと、前記分割面の伝送装置が他の全伝送装置に対して前記編集後の編成情報を付加した編成情報更新要求を送信するステップと、前記各編成内の伝送装置が前記編成情報更新要求を受信して前記付加された編成情報に更新した後、応答を送信するステップと、前記分割面の伝送装置が他の全伝送装置からの応答を受信した後、他の全伝送装置に対して分割制御終了を通知するとともに自装置も分割制御終了とし伝送を開始するステップと、前記各編成内の全伝送装置が前記分割制御終了の通知を受信し、分割制御モードから通常の伝送モードに復帰し、伝送を再開するステップとを有することを特徴とするものである。 The invention according to claim 8 is a communication method in a railway vehicle network system adopting the Internet protocol TCP / IP or UDP / IP, in which the third and fourth bytes of the IP address are transmitted with a vehicle organization identification number and transmission. A step of assigning an IP address as a device identification number to the transmission device of each vehicle, a step of disabling transmission on the divided surface side when dividing the combined vehicle composition, and a transmission device of the divided surface divided A step of notifying all transmission devices in the own organization later of the start of division control, and a transmission device in each organization receiving the division control start notification, and dividing control with the transmission that has been operating until then suspended Transition to the mode and transmitting a response to the transmission device on the division plane, and the transmission device on the division plane responds from all other transmission devices After confirming, editing the composition information after the division, transmitting the composition information update request to which the transmission device of the division surface added the edited composition information to all other transmission devices, After the transmission device in each composition receives the composition information update request and updates it to the added composition information, a step of transmitting a response, and the transmission devices on the division plane send responses from all other transmission devices. After receiving, notification of the end of division control to all other transmission devices and the start of transmission with the own device also finishing division control, and all transmission devices in each composition receiving notification of completion of division control And a step of returning to the normal transmission mode from the division control mode and restarting the transmission.
請求項９の発明は、インターネットプロトコルであるＴＣＰ/ＩＰまたはＵＤＰ/ＩＰを採用する鉄道車両用ネットワークシステムにおいて、ＩＰアドレスの一部を車両編成識別番号と伝送装置識別番号とする複数の伝送装置それぞれを各車両ごとに配備し、伝送路で互いに接続したことを特徴とするものである。 The invention of claim 9 is a railway vehicle network system that employs Internet protocol TCP / IP or UDP / IP, and each of a plurality of transmission devices having a part of an IP address as a vehicle organization identification number and a transmission device identification number. Is provided for each vehicle and connected to each other through a transmission line.
本発明によれば、各車両編成に搭載される伝送装置にユニークなＩＰアドレスを割り付けることが可能となり、編成の併結制御または分割制御を行う場合においても編成内で使用するネットワークを編成間で接続するだけで併結後の全編成のネットワークが構成でき、従来のように車両編成間の通信のためのネットワークを別途に備える必要がなく、製造において儀装が増えず、伝送制御用のポートも編成間専用に必要でないためハードウェア構成、システム構成をシンプルにできる。 According to the present invention, it is possible to assign a unique IP address to a transmission device mounted on each vehicle composition, and even when performing composition combination control or division control, a network used in the composition is connected between the compositions. This makes it possible to configure a network for all trains after merging, eliminating the need for a separate network for communication between vehicle trains as in the past, increasing the number of equipment used in manufacturing, and organizing transmission control ports. Hardware configuration and system configuration can be simplified because it is not necessary for dedicated use.
また、編成内の車両数が増減した場合でもＩＰアドレスの割り付けを併結面の伝送装置を固定とし、中間伝送装置のＩＰアドレスのみ増やしていく構成とすることにより、車両数に関係なく併結制御、分割制御が行える。 In addition, even when the number of vehicles in the train increases or decreases, the IP address assignment is fixed on the combined transmission device, and only the IP address of the intermediate transmission device is increased, so that the combined control is performed regardless of the number of vehicles. Division control is possible.
以下、本発明の実施の形態を図に基づいて詳説する。図１に示すように、本発明の第１の実施の形態の鉄道車両用ネットワークシステムでは、編成１，２内の各車両１−１，１−２，…；２−１，２−２，…に装備されている伝送装置１０−１，１０−２，…；２０−１，２０−２，…間のプロトコルにインターネットプロトコルであるＴＣＰ／ＩＰまたはＵＤＰ／ＩＰを採用し、ＩＰアドレスの一部を車両編成識別番号と伝送装置識別番号とするために、ここでは、ＩＰアドレスの３、４ＢＹＴＥ目（計１６ＢＩＴ）を編成番号と編成内の各号車伝送装置の識別番号に割り付けた伝送装置をバス型のネットワークに接続して編成内ネットワークシステムを構成している。また、車両編成の併結または分割を行う際に、編成間の伝送（送受信）の禁止または許可の設定を行うための送受信許可禁止制御部３０を設けている。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, in the railway vehicle network system according to the first embodiment of the present invention, the vehicles 1-1, 1-2,. The TCP / IP or UDP / IP, which is an Internet protocol, is adopted as the protocol between the transmission apparatuses 10-1, 10-2,...; 20-1, 20-2,. In order to use the vehicle organization identification number and the transmission device identification number, the transmission device in which the third and fourth BYTEs (16 bits in total) of the IP address are assigned to the organization number and the identification number of each car transmission device in the organization is used here. It is connected to a bus-type network to form a network system within the organization. In addition, a transmission / reception permission prohibition control unit 30 is provided for prohibiting transmission (transmission / reception) between trains or setting permission when the vehicle composition is combined or divided.
各車両編成１，２内の伝送装置に対するＩＰアドレスの割り付けは、図２に示すものである。ＩＰアドレスのクラスは特に問わず、クラスＡ，Ｂ，Ｃ，Ｄのいずれのクラスでも使用可能であり、ＩＰアドレスの３ＢＹＴＥ目と４ＢＹＴＥ目（計１６ＢＩＴ）を、編成単位で異なる編成番号、編成内で号車伝送装置単位の伝送装置番号で１６ＢＩＴを割り振る。図２の場合、ＩＰアドレスの３ＢＹＴＥ目８ＢＩＴを編成番号、４ＢＹＴＥ目８ＢＩＴを編成内伝送装置番号と設定している。図中のＩＰアドレス例は、編成１内の伝送装置として、ＣクラスのＩＰアドレスとして「１９２．１６８．１．５」を割り当てたことを示している。 The assignment of the IP address to the transmission device in each vehicle organization 1, 2 is as shown in FIG. The IP address class is not particularly limited, and any of classes A, B, C, and D can be used. Then, 16 BIT is allocated by the transmission device number of the car transmission device unit. In the case of FIG. 2, the third BYTE 8BIT of the IP address is set as the composition number, and the fourth BYTE 8BIT is set as the in-composition transmission apparatus number. The example of the IP address in the figure indicates that “192.168.1.5” is assigned as the C class IP address as the transmission apparatus in the composition 1.
このようなＩＰアドレス設定を行ったネットワーク構成の編成を併結する場合、ＩＰアドレスとしては、編成番号部分で異なるＩＰアドレスとなっているため、編成間の伝送路を接続するだけで、併結後も１つのネットワークシステムとして構成できる。 When merging network configurations with such IP address settings, since the IP addresses are different IP addresses in the knitting number portion, it is only necessary to connect the transmission paths between the knitting units and after merging. It can be configured as one network system.
図３は本実施の形態の鉄道車両用ネットワークシステムの構成及びＩＰアドレスの設定例を示し、図４は本実施の形態の鉄道車両用ネットワークシステムを装備した車両編成１，２を併結する場合の制御の流れを示し、図５は併結された同編成１，２を分割する場合の制御の流れを示している。 FIG. 3 shows a configuration of the railway vehicle network system and the IP address setting example of the present embodiment, and FIG. 4 shows a case where the vehicle formations 1 and 2 equipped with the railway vehicle network system of the present embodiment are combined. The flow of control is shown, and FIG. 5 shows the flow of control when the combined formations 1 and 2 are divided.
伝送路の構成には、図３（Ａ）に示したバス型接続の場合、同図（Ｂ）に示した梯子型（１系、２系それぞれのバス型を系間を梯子状に接続した構成）がある。この場合のＩＰアドレスの設定は、両端の併結面の伝送装置のＩＰアドレス４ＢＹＴＥ目は併結時の制御の容易さ、つまり、隣の伝送装置のＩＰアドレスが必要な場合に容易に判断できるようにすることなどを考慮し、固定の番号とし、例えば、１系側を奇数番号「１」、「３」、２系側を偶数番号「２」、「４」とする。中間位置になる伝送装置についても、１系側は奇数で５から順番に設定し、２系側は偶数で６から順番に設定する。図３（Ａ）の単なるバス型の場合でも、制御の統一性などを考慮し、ＩＰアドレスの設定は梯子型の１系側と同様の設定とする。 In the configuration of the transmission line, in the case of the bus type connection shown in FIG. 3A, the ladder type shown in FIG. 3B is connected to each other in the form of a ladder. Configuration). In this case, the setting of the IP address is such that the IP address 4BYTE of the transmission devices on the merged surfaces at both ends can be easily determined when the merger is easily controlled, that is, when the IP address of the adjacent transmission device is required. For example, the first system side is odd numbers “1” and “3”, and the second system side is even numbers “2” and “4”. Also for the transmission apparatus at the intermediate position, the first system side is set in an odd order from 5, and the second system side is set in an even number in order from 6. Even in the case of the simple bus type in FIG. 3A, the IP address is set in the same way as the ladder type 1 system side in consideration of control uniformity.
図３（Ａ）のようなバス型のネットワーク構成の編成を併結する場合について、図４を参照して詳細に説明する。ここでは、編成番号１（ＩＰアドレス３ＢＹＴＥ目が１）と編成番号２（ＩＰアドレス３ＢＹＴＥ目が２）の場合で、先頭車両は編成番号１の編成側であるものを例として説明する。 A case where the bus-type network configuration as shown in FIG. 3A is combined will be described in detail with reference to FIG. Here, a case where the formation number 1 (IP address 3BYTE is 1) and the formation number 2 (IP address 3BYTE is 2) and the leading vehicle is the formation side of the formation number 1 will be described as an example.
図４において、２つの編成を併結した場合、まず併結面伝送装置１−３と２−１は併結信号などにより併結したことを認識する。併結面の伝送装置１−３と２−１は、非併結状態では併結面の送受信を禁止状態としておく。この禁止状態で、併結状態を認識した伝送装置１−３と２−１は、各自編成内の全伝送装置、編成１の場合は伝送装置１−１と１−５、編成２の場合は２−３と２−５に併結制御開始を送信する（処理Ｓ１，Ｓ２）。 In FIG. 4, when two formations are combined, first, it is recognized that the combined surface transmission devices 1-3 and 2-1 are combined by a combined signal or the like. The transmission devices 1-3 and 2-1 on the merged surface prohibit transmission / reception of the merged surface in the non-merged state. In this prohibited state, the transmission devices 1-3 and 2-1 that have recognized the combined state are all transmission devices in their own organization, transmission devices 1-1 and 1-5 in the case of organization 1, and 2 in organization 2 -3 and 2-5 are transmitted to start merge control (steps S1 and S2).
併結制御開始要求を受信した伝送装置は、伝送を一時停止して通常伝送モードから併結制御モードに移行し、その後、併結面の伝送装置１−３または２−１に対して応答を送信する（処理Ｓ３−１，Ｓ３−２）。 The transmission device that has received the merge control start request temporarily stops transmission, shifts from the normal transmission mode to the merge control mode, and then transmits a response to the merge device transmission device 1-3 or 2-1 ( Process S3-1, S3-2).
併結面伝送装置１−３，２−１はそれぞれの編成内の応答を確認した後、併結面側の送受信を許可状態に設定し、併結相手編成とのデータ送受信を可能状態にする（処理Ｓ４，Ｓ５）。また伝送可能状態に設定後、自編成内の編成情報を付加した編成情報編集要求を併結後の先頭となる編成１の伝送装置１−１に送信する（処理Ｓ６−１，Ｓ６−２）。 After confirming the responses in the respective formations, the combined surface transmission apparatuses 1-3 and 2-1 set transmission / reception on the combined surface side to a permitted state and enable data transmission / reception with the combined partner organization (processing S 4). , S5). In addition, after setting the transmission enabled state, a composition information editing request to which the composition information in the self composition is added is transmitted to the transmission apparatus 1-1 of the composition 1 that becomes the head after the combination (processing S6-1 and S6-2).
伝送装置１−１は、併結面である２つの伝送装置１−３と２−１からの編成情報編集要求を受信した後、付加されたそれぞれの編成の編成情報から併結後の編成情報の編集を行う（処理Ｓ７，Ｓ８）。そして編集完了後、全伝送装置（編成１と編成２全て）に対して、編集後の編成情報を付加した編成情報更新要求を送信する（処理Ｓ９）。編成情報更新要求を受信した各伝送装置（１−１以外の伝送装置）は、付加された編成情報に更新後、応答を送信する（処理Ｓ１０−１〜Ｓ１０−４）。 The transmission apparatus 1-1 receives the composition information editing request from the two transmission apparatuses 1-3 and 2-1, which are the merge planes, and then edits the composition information after the merge from the added composition information. Are performed (processing S7, S8). Then, after the editing is completed, a composition information update request with the edited composition information added is transmitted to all transmission apparatuses (all composition 1 and composition 2) (processing S9). Each transmission apparatus (transmission apparatus other than 1-1) that has received the composition information update request transmits a response after updating the added composition information (processing S10-1 to S10-4).
伝送装置１−１は、全伝送装置からの応答を確認後（処理Ｓ１１）、全伝送装置に対して併結制御終了を送信するとともに自身も併結制御終了とし、併結制御モードから通常伝送モードに移行し伝送を開始する（処理Ｓ１２，Ｓ１３）。併結終了を受信した各伝送装置も同様に併結制御モードから通常の伝送モードに復帰し、伝送を再開する（処理Ｓ１４−１〜Ｓ１４−５）。 After confirming the responses from all the transmission devices (processing S11), the transmission device 1-1 transmits the end of the merge control to all the transmission devices and also ends the merge control itself, and shifts from the merge control mode to the normal transmission mode. Transmission is started (steps S12 and S13). Similarly, each transmission apparatus that has received the completion of the combination returns from the combination control mode to the normal transmission mode, and resumes transmission (processing S14-1 to S14-5).
次に、図５を用いて、併結した編成１と編成２を分割する場合の制御について説明する。編成１と編成２を分割した場合、伝送装置１−３と２−１は、分割面側の伝送を禁止状態とし、分割時の不安定な伝送路でも相手編成から無意味なデータを受信しないようにする（処理Ｓ２１）。分割面の伝送装置１−３と２−１は、分割後の各自編成内の全伝送装置に分割制御開始要求送信する（処理Ｓ２２）。 Next, the control in the case of dividing | segmenting the organization 1 and the organization 2 which were joined together is demonstrated using FIG. When the formation 1 and the formation 2 are divided, the transmission apparatuses 1-3 and 2-1 prohibit transmission on the division plane side and do not receive meaningless data from the other organization even in an unstable transmission path at the time of division. (Processing S21). The transmission devices 1-3 and 2-1 on the division plane transmit a division control start request to all the transmission devices in each organization after division (processing S22).
編成内の他伝送装置、編成１の場合は１−１と１−５、編成２の場合は２−３と２−５は分割開始要求を受信して伝送を一時停止状態とし、通常伝送モードから分割制御モードに移行し、その後、分割面の伝送装置１−３または２−１に対して応答を送信する（処理Ｓ２３−１，Ｓ２３−２）。 Other transmission devices in the organization, 1-1 and 1-5 in the case of organization 1, 2-3 and 2-5 in the case of organization 2, receive the division start request and temporarily stop transmission, and normal transmission mode Shifts to the division control mode, and then transmits a response to the transmission apparatus 1-3 or 2-1 on the division plane (steps S23-1 and S23-2).
分割面伝送装置１−３、２−１は、応答確認後（処理Ｓ２４）、分割後の編成情報の編集を行い（処理Ｓ２５）、編成内全伝送装置に対して編集後の編成情報を付加した編成情報更新要求を送信する（処理Ｓ２６）。編成情報更新要求を受信した各伝送装置は、付加された編成情報に更新した後、応答を送信する（処理Ｓ２７−１〜Ｓ２７−４）。 After confirming the response (Processing S24), the division plane transmission apparatuses 1-3 and 2-1 edit the composition information after the division (Processing S25), and add the edited composition information to all the transmission apparatuses within the composition. The created organization information update request is transmitted (process S26). Each transmission device that has received the composition information update request transmits a response after updating the added composition information (processing S27-1 to S27-4).
分割面の伝送装置１−３，２−１は全伝送装置からの応答を確認した後（処理Ｓ２８）、全伝送装置に対して分割制御終了を送信するとともに自身も分割制御終了とし分割制御モードから通常伝送モードに移行し、伝送を開始する（処理Ｓ２９，Ｓ３０）。また、分割終了を受信した各伝送装置も同様に分割制御モードから通常の伝送モードに復帰し、伝送を再開する（処理Ｓ３１−１〜Ｓ３１−４）。 After the transmission devices 1-3 and 2-1 on the dividing plane confirm the responses from all the transmission devices (processing S28), the division control end is transmitted to all the transmission devices and the division control ends itself. Shifts to the normal transmission mode and starts transmission (steps S29 and S30). Similarly, each transmission apparatus that has received the end of division also returns from the division control mode to the normal transmission mode, and resumes transmission (processing S31-1 to S31-4).
このようにして、第１の実施の形態の鉄道車両用ネットワークシステムでは、ＴＣＰ／ＩＰまたはＵＤＰ／ＩＰなどインターネットプロトコルを使用した伝送システムを採用し、編成内の伝送装置はもちろん、編成にまたがった場合でも各伝送装置がどの編成のどの伝送装置であることがわかるようなにユニークなＩＰアドレスの割り付けを行うことにより、異なる編成を併結する場合でも、編成間専用のネットワークを設けることなく、編成内ネットワークを編成間で接続するだけの簡単な手順で併結または分割の制御が行える。 In this way, the railway vehicle network system according to the first embodiment employs a transmission system using an Internet protocol such as TCP / IP or UDP / IP, and covers not only the transmission apparatus in the composition but also the composition. Even in the case where different transmissions are combined by assigning a unique IP address so that each transmission device can identify which transmission device of which organization, the organization can be established without providing a network dedicated to the organization. It is possible to control the merging or dividing by a simple procedure of connecting the internal network between the organizations.
次に、本発明の第２の実施の形態の鉄道車両用ネットワークシステムについて、図３（Ｂ）の梯子型のネットワーク構成の場合について説明する。編成番号１（ＩＰアドレス３ＢＹＴＥ目が１）と編成番号２（ＩＰアドレス３ＢＹＴＥ目が２）の場合で、先頭車両は編成番号１の編成側である。 Next, the railway vehicle network system according to the second embodiment of the present invention will be described in the case of the ladder-type network configuration shown in FIG. In the case of composition number 1 (IP address 3BYTE is 1) and composition number 2 (IP address 3BYTE is 2), the leading vehicle is the composition side of composition number 1.
図３（Ｂ）のような梯子型の２重系構成となった場合でも併結制御は系単位で実行するため、第１の実施の形態で行う制御と同様となる。しかし、梯子型構成の場合は、伝送路断線などによる断線時に図６のように迂回して冗長性を確保する。このように、伝送路が迂回した状態で他編成と併結を行う場合の併結制御処理について説明する。図６に示すような伝送路が迂回した状態の編成１と健全なネットワーク状態の編成２を併結する場合、第１の実施の形態と同様の併結制御を開始し、編成１の伝送装置１−１，１−２，１−３，１−５，１−６と編成２の伝送装置２−１、２−５，２−３は併結制御を正常に完了する。しかし、編成１の伝送装置１−４と編成２の伝送装置２−２，２−４，２−６に関しては、正常に併結制御を完了することができない。編成１の伝送装置１−４は、編成内の伝送路が迂回によって接続されていないため併結面伝送装置からの要求に対する応答を受信できず、タイムアウト異常となる。また、編成２の伝送装置２−２，２−４，２−６は、編成内の制御は終了するが、迂回しているため併結後の編成情報を受けられず、タイムアウト異常となってしまう。 Even in the case of a ladder-type dual system configuration as shown in FIG. 3B, the combined control is executed in units of systems, and thus is the same as the control performed in the first embodiment. However, in the case of a ladder type configuration, redundancy is ensured by detouring as shown in FIG. 6 when the transmission line is disconnected. In this way, the merge control process when performing merge with other trains while the transmission path is detoured will be described. When the formation 1 with the transmission path detoured as shown in FIG. 6 and the formation 2 in a healthy network state are combined, the same combination control as in the first embodiment is started, and the transmission apparatus 1 of the formation 1 is started. 1, 1-2, 1-3, 1-5, 1-6 and transmission apparatus 2-1, 2-5, 2-3 of formation 2 complete the combined control normally. However, the merge control cannot be normally completed for the transmission apparatus 1-4 of the formation 1 and the transmission apparatuses 2-2, 2-4, and 2-6 of the formation 2. The transmission device 1-4 of the composition 1 cannot receive a response to the request from the combined surface transmission device because the transmission path in the composition is not connected by detour, and a timeout error occurs. In addition, the transmission devices 2-2, 2-4, and 2-6 of the knitting 2 finish the control within the knitting, but because they are detoured, they cannot receive the knitting information after the combination, resulting in a timeout error. .
このような場合でも、異常となった伝送装置にも併結後の編成情報を渡す手段として、本実施の形態のネットワークシステムでは１系２系間で互いの情報を授受するためのシリアル回線４０を利用する。１系２系間のシリアル回線では、常時互いの情報を授受し、相手の併結制御の状態も常時渡す。 Even in such a case, in the network system of the present embodiment, the serial line 40 for exchanging information between the first and second systems is used as a means for passing the combined information to the transmission apparatus that has become abnormal. Use. In the serial line between the 1st system and the 2nd system, each other's information is always exchanged, and the status of the other party's combination control is also always passed.
そこで、併結制御異常を認識した各伝送装置１−４，２−２，２−４，２−６は、系間で渡される相手系の併結制御情報を確認し、新規に正常に併結制御完了の情報がある場合は、相手系からの併結後の編成マップ情報を採用し、自伝送装置内の編成情報を更新する。 Therefore, each transmission device 1-4, 2-2, 2-4, 2-6 that has recognized the merge control abnormality confirms the merge control information of the partner system passed between the systems, and completes the new merge control normally. If there is such information, the composition map information after merging from the partner system is adopted, and the composition information in the own transmission apparatus is updated.
逆に編成を分割する場合も同様に、分割した編成２は、健全状態であるため、１系、２系それぞれ分割制御は正常に完了する。しかし、編成１伝送装置１−４についてはタイムアウト異常となり、分割制御異常となる。この場合でも、１系２系間で授受する反対系の伝送装置１−３の併結情報から自伝送装置の編成情報を更新することができる。 Conversely, when the knitting is divided, similarly, since the divided knitting 2 is in a healthy state, the division control for each of the first and second systems is normally completed. However, the composition 1 transmission apparatus 1-4 becomes time-out abnormality and division control abnormality. Even in this case, it is possible to update the composition information of the own transmission apparatus from the combined information of the transmission apparatuses 1-3 of the opposite system exchanged between the first system and the second system.
こうして第２の実施の形態の鉄道車両用ネットワークシステムでは、第１の実施の形態と同様の作用、効果を有し、かつ、梯子型伝送路の構成によって伝送路の冗長性を確保することができる。 Thus, the railway vehicle network system according to the second embodiment has the same operations and effects as those of the first embodiment, and it is possible to ensure the redundancy of the transmission line by the configuration of the ladder-type transmission line. it can.
次に、本発明の第３の実施の形態の鉄道車両用ネットワークシステムについて説明する。第３の実施の形態の鉄道車両用ネットワークシステムでは、複数の編成が併結した状態で電源オンして起動した場合の併結制御について説明する。 Next, a railway vehicle network system according to a third embodiment of the present invention will be described. In the railway vehicle network system according to the third embodiment, the combination control when the power is turned on and activated in a state where a plurality of trains are combined will be described.
図７（Ａ）に示すように編成１、２、３、４の４編成が併結した状態で起動した場合の例を示す。併結した状態で、電源オンした場合は、全ての編成は単編成で起動し、併結要求があれば、全ての併結面が併結処理を実行してしまう可能性がある。それを避けるため、編成内で相手の併結面の状態をチェックして、両併結面とも、併結要求がオンになっている場合は先頭車側優先とし先頭車側から併結制御を実行していくことにより、必ず1編成ずつ併結制御を実行する。 As shown in FIG. 7A, an example is shown in which the four formations 1, 2, 3, 4 are started together. When the power is turned on in the combined state, all the knittings are activated in a single knitting, and if there is a merging request, all the merging surfaces may execute the merging process. To avoid this, check the status of the opponent's merged surface in the train, and if the merge request is turned on for both merged surfaces, give priority to the first vehicle and execute merge control from the first vehicle. Therefore, the combination control is always executed one by one.
図７の例では、併結された４編成のうち編成２，３，４が同時に起動して編成1が遅れて起動した場合を考える。編成２は伝送装置２−３側のみ併結要求、編成３は伝送装置３−１側、３−３側とも併結要求があるが、先頭号車側優先とするため、先頭号車側伝送装置３−１側、編成４は先頭車側伝送装置４−１が併結制御を実行する。したがって、実際の併結制御により接続されるのは、図７（Ｂ）に示すように編成２と編成３だけである。 In the example of FIG. 7, a case is considered in which the formations 2, 3 and 4 of the four combined formations are activated simultaneously and the formation 1 is activated with a delay. The formation 2 has a merge request only on the transmission apparatus 2-3 side, and the formation 3 has a merge request on both the transmission apparatus 3-1 side and the 3-3 side. As for the side and the formation 4, the leading vehicle side transmission device 4-1 executes the combination control. Therefore, only the knitting 2 and the knitting 3 are connected by the actual merging control as shown in FIG. 7B.
編成２，３の併結制御中に編成１も起動した場合、編成１の伝送装置１−３側、編成２，３の併結後の編成２の先頭号車側伝送装置２−１が併結制御を開始し、図７（Ｃ）に示すように編成２，３の併結編成と編成１との併結制御処理が実行される。 When the formation 1 is also activated during the combination control of the formations 2 and 3, the transmission apparatus 1-3 side of the formation 1 and the first car side transmission apparatus 2-1 of the formation 2 after the combination of the formations 2 and 3 start the combination control. Then, as shown in FIG. 7C, the combined control processing of the combined formations of the formations 2 and 3 and the formation 1 is executed.
この併結制御が完了すると、編成３の伝送装置３−３側の要求が残っているため、編成３の伝送装置３−３側も併結制御を実行開始する。編成４は最初から併結処理実行して待ち状態になっているため、ここで編成１，２，３併結編成と編成４の併結制御が実行され、図７（Ｄ）に示すように全併結完了となる。 When the combination control is completed, since the request on the transmission device 3-3 side of the formation 3 remains, the transmission device 3-3 side of the formation 3 also starts executing the combination control. Since knitting 4 is in a waiting state after executing the consolidation process from the beginning, knitting 1, 2, 3 knitting knitting and knitting 4 merging control are executed here, and all merging is completed as shown in FIG. It becomes.
このように第３の実施の形態では、複数編成が併結した状態で起動（電源オン）した場合でも、１編成ずつ併結制御を実行するような制御とすることにより、併結制御を行うことができる。 As described above, in the third embodiment, even when a plurality of trains are started (powered on) in a combined state, the combined control can be performed by performing the control for executing the combined control one by one. .
１−１，１−２，… 車両
２−１，２−２，… 車両
１０−１，１０−２，… 伝送装置
２０−１，２０−２，… 伝送装置
３０ 送受信許可禁止制御部
４０ シリアル回線
1-1, 1-2, ... Vehicles 2-1 and 2-2, ... Vehicles 10-1, 10-2, ... Transmission devices 20-1, 20-2, ... Transmission device 30 Transmission / reception permission prohibition control unit 40 Serial Line
Claims (9)
ＩＰアドレスの３バイト目及び４バイト目を車両編成識別番号と伝送装置識別番号とするＩＰアドレスを持つ複数の伝送装置それぞれを各車両ごとに配備し、伝送路で互いに接続したことを特徴とする鉄道車両用ネットワークシステム。 In a railway vehicle network system adopting the Internet protocol TCP / IP or UDP / IP,
A plurality of transmission devices each having an IP address in which the third byte and the fourth byte of the IP address have a vehicle organization identification number and a transmission device identification number are arranged for each vehicle and connected to each other via a transmission line. Railway vehicle network system.
ＩＰアドレスの３バイト目及び４バイト目を車両編成識別番号と伝送装置識別番号とするＩＰアドレスを各車両の伝送装置に割り当てるステップと、
異なる車両編成を併結する場合において、
併結面の伝送装置が併結状態を認識して自編成内の全伝送装置に併結制御開始を通知するステップと、
編成内の他伝送装置が併結制御開始の通知を受信したときに、それまで動作していた伝送を一時停止状態とし、併結制御モードに移行し、併結面の伝送装置に対して応答を送信するステップと、
前記併結面伝送装置が他の全伝送装置からの応答を確認した後、併結面側の伝送を許可状態に設定し、相手編成とのデータの送受信を可能な状態に設定するステップと、
前記併結面伝送装置が前記データの送受信を可能な状態に設定した後、自編成内の編成情報を付加した編成情報編集要求を併結後の先頭となる号車の伝送装置に送信するステップと、
前記併結後の先頭となる号車の伝送装置が２つの併結面伝送装置からの前記編成情報編集要求を受信した後、付加されたそれぞれの編成の編成情報から併結後の編成情報の編集を行うステップと、
前記併結後の先頭となる号車の伝送装置が前記併結後の編成情報の編集を完了した後、全伝送装置に対して編集後の編成情報を付加した編成情報更新要求を送信するステップと、
編成情報更新要求を受信した先頭号車以外の各伝送装置が自装置に保持している編成情報を前記付加された併結後の編成情報に更新した後、応答を送信するステップと、
前記併結後の先頭となる号車の伝送装置が他の全伝送装置からの応答を受信した後、全伝送装置に対して併結制御終了を送信するとともに自装置も併結制御終了として伝送を開始するステップと、
併結終了を受信した各伝送装置が併結制御モードから通常の伝送モードに復帰し、伝送を再開するステップとを有することを特徴とする鉄道車両用ネットワークシステムにおける通信方法。 A communication method in a railway vehicle network system adopting an Internet protocol TCP / IP or UDP / IP,
Assigning an IP address having the 3rd and 4th bytes of the IP address as the vehicle organization identification number and the transmission device identification number to the transmission device of each vehicle;
When combining different vehicle formations,
A step in which the transmission device of the combined surface recognizes the combined state and notifies the start of the combined control to all the transmission devices in the self-organization;
When the other transmission device in the train receives the notification of the start of merge control, the transmission that has been operating until then is suspended, transitions to merge control mode, and a response is sent to the merge surface transmission device. Steps,
After confirming responses from all other transmission devices by the combined surface transmission device, setting the transmission on the combined surface side to a permitted state, and setting a state in which data can be transmitted and received with the partner organization; and
After the combined surface transmission device is set in a state in which the data can be transmitted and received, a knitting information editing request to which the knitting information in the self-organization is added is transmitted to the transmission device of the car that becomes the head after the combination;
A step of editing the combined knitting information from the knitting information of each of the added knitting information after the transmission device of the leading car after the merging receives the knitting information editing request from the two merging surface transmission devices; When,
After the transmission device of the car that becomes the head after the combination completes editing the composition information after the combination, a step of transmitting a composition information update request with the edited composition information added to all the transmission devices;
A step of transmitting a response after updating the knitting information held by the transmission apparatus other than the first car that has received the knitting information update request to the added combined knitting information;
After the transmission device of the first car after the combination receives a response from all the other transmission devices, the step of transmitting the completion of the merge control to all the transmission devices and starting the transmission as the completion of the merge control as well as the own device When,
A communication method in a railway vehicle network system, comprising: a step in which each transmission device that has received the end of combination returns from the combination control mode to a normal transmission mode and resumes transmission.
併結制御異常によりいずれかの伝送装置が迂回伝送経路として徴用されたときに、当該伝送装置が相手系の併結情報をチェックして自系伝送装置内の併結後の編成情報を更新することを特徴とする請求項３に記載の鉄道車両用ネットワークシステムにおける通信方法。 The railway vehicle network system is a ladder-type network system in which the network configuration in a train is a dual system configuration of 1 system and 2 systems, and the 1 system and 2 systems are connected in a ladder shape, and between the 1 system and 2 systems Each transmission device is equipped with a serial line for sending and receiving data and constantly sending and receiving each other's information,
When one of the transmission devices is used as a bypass transmission path due to a merge control error, the transmission device checks the merge information of the partner system and updates the combined organization information in the own system transmission device. The communication method in the railway vehicle network system according to claim 3.
編成内の反対の併結面の状態をチェックするステップと、
両併結面とも併結要求がオンになっているときには先頭車側の編成を優先し、１編成ずつ併結制御を実行するステップとを有することを特徴とする請求項３に記載の鉄道車両用ネットワークシステムにおける通信方法。 A step of starting each knitting as a single knitting when activated in a state where a plurality of vehicle knitting are combined;
Checking the state of opposite mating surfaces in the organization;
4. The railway vehicle network system according to claim 3, further comprising a step of giving priority to the knitting on the leading vehicle side and executing the merging control one by one when the merging request is on for both merging surfaces. Communication method.
ＩＰアドレスの３バイト目及び４バイト目を車両編成識別番号と伝送装置識別番号とするＩＰアドレスを各車両の伝送装置に割り当てるステップと、
併結されている車両編成を分割する場合において、
分割面側の伝送を禁止状態とするステップと、
分割面の伝送装置が分割後の自編成内の全伝送装置に分割制御開始を通知するステップと、
各編成内の伝送装置が分割制御開始の通知を受信して、それまで動作していた伝送を一時停止状態として分割制御モードに移行し、前記分割面の伝送装置に対して応答を送信するステップと、
前記分割面の伝送装置が他の全伝送装置からの応答を確認した後、分割後の編成情報を編集するステップと、
前記分割面の伝送装置が他の全伝送装置に対して前記編集後の編成情報を付加した編成情報更新要求を送信するステップと、
前記各編成内の伝送装置が前記編成情報更新要求を受信して前記付加された編成情報に更新した後、応答を送信するステップと、
前記分割面の伝送装置が他の全伝送装置からの応答を受信した後、他の全伝送装置に対して分割制御終了を通知するとともに自装置も分割制御終了とし伝送を開始するステップと、
前記各編成内の全伝送装置が前記分割制御終了の通知を受信し、分割制御モードから通常の伝送モードに復帰し、伝送を再開するステップとを有することを特徴とする鉄道車両用ネットワークシステムにおける通信方法。 A communication method in a railway vehicle network system adopting an Internet protocol TCP / IP or UDP / IP,
Assigning an IP address having the 3rd and 4th bytes of the IP address as the vehicle organization identification number and the transmission device identification number to the transmission device of each vehicle;
In the case of splitting the combined vehicle organization,
A step of prohibiting transmission on the divided surface side;
A step in which the transmission device on the split surface notifies the start of split control to all transmission devices in the self-organization after splitting;
A step in which a transmission device in each train receives a notification of the start of division control, makes a transmission that has been operating so far suspended, enters a division control mode, and transmits a response to the transmission device on the division plane When,
After the transmission device of the division surface confirms responses from all other transmission devices, editing the composition information after division;
A step of transmitting a composition information update request in which the transmission device of the divided surface adds the edited composition information to all other transmission devices;
A step of transmitting a response after the transmission device in each composition receives the composition information update request and updates the added composition information;
After the transmission device of the division plane receives a response from all the other transmission devices, notifying the other transmission devices of the end of division control and starting transmission with the own device also finishing division control,
In the railway vehicle network system, all the transmission devices in each train receive a notification of the end of the division control, return to the normal transmission mode from the division control mode, and resume transmission. Communication method.
ＩＰアドレスの一部を車両編成識別番号と伝送装置識別番号とする複数の伝送装置それぞれを各車両ごとに配備し、伝送路で互いに接続したことを特徴とする鉄道車両用ネットワークシステム。 In a railway vehicle network system that employs the Internet protocol TCP / IP or UDP / IP,
A railroad vehicle network system, wherein a plurality of transmission devices each having a vehicle organization identification number and a transmission device identification number as part of an IP address are provided for each vehicle and connected to each other via a transmission line.
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Cited By (6)
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| JP2007135087A (en) * | 2005-11-11 | 2007-05-31 | Toshiba Corp | Transmission system for railroad car and railroad car using the same |
| JP2008131065A (en) * | 2006-11-16 | 2008-06-05 | Toshiba Corp | Transmission system for railroad vehicle, and railroad vehicle using the same |
| JP2009111884A (en) * | 2007-10-31 | 2009-05-21 | Toshiba Corp | Transmission system for railroad vehicle, and railroad vehicle using the same |
| WO2010087258A1 (en) * | 2009-01-27 | 2010-08-05 | 三菱電機株式会社 | Train communication system and train communication method |
| EP2591974A2 (en) | 2011-11-09 | 2013-05-15 | Hitachi Ltd. | Information transmission device and information transmission method |
| JP2019135805A (en) * | 2018-02-05 | 2019-08-15 | 株式会社Ｊｒ西日本テクシア | Inter-vehicle communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2007135087A (en) * | 2005-11-11 | 2007-05-31 | Toshiba Corp | Transmission system for railroad car and railroad car using the same |
| JP2008131065A (en) * | 2006-11-16 | 2008-06-05 | Toshiba Corp | Transmission system for railroad vehicle, and railroad vehicle using the same |
| JP2009111884A (en) * | 2007-10-31 | 2009-05-21 | Toshiba Corp | Transmission system for railroad vehicle, and railroad vehicle using the same |
| WO2010087258A1 (en) * | 2009-01-27 | 2010-08-05 | 三菱電機株式会社 | Train communication system and train communication method |
| JP4744645B2 (en) * | 2009-01-27 | 2011-08-10 | 三菱電機株式会社 | Train communication system and train communication method |
| CN102307771A (en) * | 2009-01-27 | 2012-01-04 | 三菱电机株式会社 | Train communication system and train communication method |
| US8743873B2 (en) | 2009-01-27 | 2014-06-03 | Mitsubishi Electric Corporation | Train communication system and train communication method |
| EP2591974A2 (en) | 2011-11-09 | 2013-05-15 | Hitachi Ltd. | Information transmission device and information transmission method |
| JP2019135805A (en) * | 2018-02-05 | 2019-08-15 | 株式会社Ｊｒ西日本テクシア | Inter-vehicle communication system |
| JP7100956B2 (en) | 2018-02-05 | 2022-07-14 | 株式会社Ｊｒ西日本テクシア | Vehicular communication system |
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