JP7100956B2 - Vehicular communication system - Google Patents

Vehicular communication system Download PDF

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JP7100956B2
JP7100956B2 JP2018018139A JP2018018139A JP7100956B2 JP 7100956 B2 JP7100956 B2 JP 7100956B2 JP 2018018139 A JP2018018139 A JP 2018018139A JP 2018018139 A JP2018018139 A JP 2018018139A JP 7100956 B2 JP7100956 B2 JP 7100956B2
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relay device
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和弥 末廣
和豊 塩濱
圭志 潮田
勝裕 天野
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株式会社Ｊｒ西日本テクシア
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description

本発明は、複数の車両を連結した編成内で車両間の通信を行う車両間通信システムに関する。 The present invention relates to an inter-vehicle communication system that communicates between vehicles in a formation in which a plurality of vehicles are connected.

従来から、複数の車両を連結した編成内で車両間の通信を行う車両間通信システムが知られている（例えば、特許文献１参照）。このような車両間通信システムでは、自編成の隣接する車両間で無線通信をする必要がある。 Conventionally, a vehicle-to-vehicle communication system that communicates between vehicles in a formation in which a plurality of vehicles are connected has been known (see, for example, Patent Document 1). In such an inter-vehicle communication system, it is necessary to perform wireless communication between adjacent vehicles of self-organization.

図３に示すように、複数の車両２連結した編成３でＬＡＮ（ローカルエリアネットワーク）を構築する際の車両間接続手段として無線通信を用いる場合、無線ＬＡＮ接続用に車両２の前後にアクセスポイント１０４が設置され、隣接する車両２のアクセスポイント１０４同士が接続される。 As shown in FIG. 3, when wireless communication is used as a vehicle-to-vehicle connection means when constructing a LAN (local area network) in a formation 3 in which a plurality of vehicles 2 are connected, access points are used before and after the vehicle 2 for wireless LAN connection. 104 is installed, and access points 104 of adjacent vehicles 2 are connected to each other.

しかし、その無線ＬＡＮは、通常動作である不特定の相手と接続する特性上、他編成の近隣の車両と接続する可能性がある。 However, the wireless LAN may be connected to a nearby vehicle of another organization due to the characteristic of connecting to an unspecified partner which is a normal operation.

例えば、図４に示すように、自編成３以外に、同じホーム９の隣の番線に他編成３Ｘが停まっている時、異なる編成３、３Ｘの先頭車両のアクセスポイント１０４同士が誤接続される可能性がある。また、図５に示すように、同じホーム９の隣の番線に他編成３Ｘが停まっている時、異なる編成３、３Ｘの中間車両のアクセスポイント１０４同士が誤接続される可能性がある。 For example, as shown in FIG. 4, when another formation 3X is parked on the track next to the same home 9 other than the self-form 3, the access points 104 of the leading vehicles of different formations 3 and 3X are erroneously connected to each other. There is a possibility. Further, as shown in FIG. 5, when another formation 3X is parked on the track next to the same home 9, the access points 104 of the intermediate vehicles of different formations 3 and 3X may be erroneously connected to each other.

このような誤接続が発生した場合、他編成３Ｘの近隣車両２が離脱する（遠ざかる）ことによって正常接続に遷移するが、一時的に自編成３内へ正確な情報伝達が不可能となり、ＬＡＮに接続された車載機器が誤動作する等、車両運用に大きな影響を及ぼす。 When such an erroneous connection occurs, the neighboring vehicle 2 of the other formation 3X leaves (moves away) to transition to a normal connection, but it becomes temporarily impossible to accurately transmit information into the own formation 3 and the LAN. It has a great influence on the vehicle operation, such as malfunction of the in-vehicle device connected to the.

このような誤接続への対策として、編成を固定化し、接続相手を特定することで誤接続は回避可能である。しかし、時期、時間帯、曜日別で多様化している車両運用において、編成の固定化は、運用効率の低下を招く。 As a countermeasure against such erroneous connection, erroneous connection can be avoided by fixing the organization and specifying the connection partner. However, in vehicle operations that are diversified by time, time zone, and day of the week, fixing the formation causes a decrease in operational efficiency.

特開２０１２－４８６３号公報Japanese Unexamined Patent Publication No. 2012-4863

本発明は、上記問題を解決するものであり、車両間を無線ＬＡＮで接続するために車端部に設けられるアクセスポイントにおいて、誤接続を防止することを目的とする。 The present invention solves the above-mentioned problems, and an object of the present invention is to prevent erroneous connection at an access point provided at the end of a vehicle for connecting vehicles by wireless LAN.

本発明の車両間通信システムは、複数の車両を連結した編成内で車両間の通信を行うシステムであって、車両間を無線ＬＡＮで接続するために前後の各車端部に設けられるアクセスポイントと、各車両に設けられて自車両の前記アクセスポイントに接続された中継装置と、各車両に設けられて自車両の前記各アクセスポイントが編成の最前部、連結部、最後部のいずれに位置するかの車両内位置情報を有する車両情報ユニットを備え、前記各中継装置は、自車両の前記車両情報ユニットから前記車内位置情報を受けて、その車両内位置情報が最前部又は最後部である自車両のアクセスポイントを停波状態にし、車両内位置情報が連結部である自車両のアクセスポイントを開波状態にすることを特徴とする。 The vehicle-to-vehicle communication system of the present invention is a system for communicating between vehicles in a formation in which a plurality of vehicles are connected, and is an access point provided at each of the front and rear vehicle ends in order to connect the vehicles with a wireless LAN. And, the relay device provided in each vehicle and connected to the access point of the own vehicle, and the access point of the own vehicle provided in each vehicle are located at any of the front part, the connecting part, and the rearmost part of the formation. Each relay device includes a vehicle information unit having in-vehicle position information, and each of the relay devices receives the in-vehicle position information from the in-vehicle position information of the own vehicle, and the in-vehicle position information is the frontmost part or the rearmost part. It is characterized in that the access point of the own vehicle is stopped and the access point of the own vehicle whose in-vehicle position information is a connecting portion is opened.

この車両間通信システムにおいて、前記車両情報ユニットへの前記車両内位置情報の入力操作を受ける切替機を有し、運転台のある車端部に設けられた前記アクセスポイントの車両内位置情報は、前記切替機によって設定され、運転台の無い車端部に設けられた前記アクセスポイントの車両内位置情報は、連結部とされることが好ましい。 In this inter-vehicle communication system, the in-vehicle position information of the access point provided at the end of the vehicle having a driver's cab and having a switching device that receives an input operation of the in-vehicle position information to the vehicle information unit is used. It is preferable that the in-vehicle position information of the access point set by the switching device and provided at the vehicle end portion without a driver's cab is a connecting portion.

この車両間通信システムにおいて、前記各中継装置は、ＩＰアドレスを有するとともに、自編成の運行系統毎にその運行系統の編成両数を含むマスターデータが予め記憶され、前記中継装置には、１つの主系の中継装置と、それ以外の従系の中継装置があり、主系の前記中継装置は、各運行系統の運転が始まる前に、前記マスターデータから編成両数の情報を取得し、その運行系統の車両編成情報を作成して全ての従系の前記中継装置に送り、前記車両編成情報は、編成両数の情報と、編成内の全中継装置のＩＰアドレス及び主系・従系の区別であり、前記各中継装置は、前記車両編成情報を用いて互いに通信を行うことが好ましい。 In this inter-vehicle communication system, each relay device has an IP address, and master data including the number of trains of the operation system is stored in advance for each operation system of its own organization, and one relay device has one. There are a main system relay device and other slave system relay devices, and the main system relay device acquires information on the number of trains from the master data before the operation of each operation system starts, and the information thereof is acquired. The vehicle formation information of the operation system is created and sent to the relay device of all the slave systems, and the vehicle formation information includes the information of the number of trains, the IP addresses of all the relay devices in the formation, and the main system / slave system. As a distinction, it is preferable that the relay devices communicate with each other using the vehicle formation information.

この車両間通信システムにおいて、主系の前記中継装置は、前記車両編成情報を作成する時、一つ前の運行系統の車両編成情報を有する場合、その車両編成情報で特定される他の中継装置を個別に検索して車両編成情報を更新し、それ以外の場合、不特定の他の中継装置を検索して車両編成情報を新たに作成することが好ましい。 In this inter-vehicle communication system, when the relay device of the main system has the vehicle formation information of the previous operation system when creating the vehicle formation information, another relay device specified by the vehicle formation information. It is preferable to individually search for and update the vehicle formation information, and in other cases, search for another unspecified relay device and newly create the vehicle formation information.

この車両間通信システムにおいて、主系の前記中継装置は、先頭車両又は最後尾車両に設けられた中継装置とされることが好ましい。 In this inter-vehicle communication system, it is preferable that the relay device of the main system is a relay device provided in the leading vehicle or the rearmost vehicle.

本発明の車両間通信システムによれば、最前部と最後部のアクセスポイントが停波状態となり、不要な誤接続が防止される。また、中継装置が車両編成情報を用いて互いに通信を行うことにより、誤接続が一層防止される。 According to the vehicle-to-vehicle communication system of the present invention, the frontmost and rearmost access points are in a wave-stopped state, and unnecessary erroneous connection is prevented. Further, since the relay devices communicate with each other using the vehicle formation information, erroneous connection is further prevented.

本発明の一実施形態に係る車両間通信システムのブロック構成図。The block block diagram of the vehicle-to-vehicle communication system which concerns on one Embodiment of this invention. 同システムにおける車両編成情報の構成図。The block diagram of the vehicle formation information in the system. 従来の車両間通信システムにおける正常な無線接続を示す図。The figure which shows the normal wireless connection in the conventional vehicle-to-vehicle communication system. 従来の車両間通信システムにおける誤った無線接続例を示す図。The figure which shows the example of the erroneous wireless connection in the conventional vehicle-to-vehicle communication system. 従来の車両間通信システムにおける別の誤った無線接続例を示す図。The figure which shows the example of another erroneous wireless connection in the conventional vehicle-to-vehicle communication system.

本発明の一実施形態に係る車両間通信システムを図１及び図２を参照して説明する。図１に示すように、車両間通信システム１は、複数の車両２（２ａ、２ｂ、２ｃ）を連結した編成３内で車両２間の通信を行うシステムである。この車両間通信システム１は、アクセスポイント４（４ａ１、４ａ２、４ｂ１、４ｂ２、４ｃ１、４ｃ２）と、中継装置５（５ａ、５ｂ、５ｃ）と、車両情報ユニット６を備える。アクセスポイント４は、車両２間を無線ＬＡＮで接続するために前後の各車端部に設けられる。中継装置５は、各車両２に設けられて自車両２のアクセスポイント４に接続される。車両情報ユニット６は、各車両２に設けられて自車両２の各アクセスポイント４が編成３の最前部、連結部、最後部のいずれに位置するかの車両内位置情報を有する。各中継装置５は、自車両２の車両情報ユニット６から車内位置情報を受けて、その車両内位置情報が最前部又は最後部である自車両２のアクセスポイント４ａ１、４ｃ２を停波状態にし、車両内位置情報が連結部である自車両２のアクセスポイント４ａ２、４ｂ１、４ｂ２、４ｃ１を開波状態にする。 An inter-vehicle communication system according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. As shown in FIG. 1, the vehicle-to-vehicle communication system 1 is a system that communicates between vehicles 2 in a formation 3 in which a plurality of vehicles 2 (2a, 2b, 2c) are connected. The vehicle-to-vehicle communication system 1 includes an access point 4 (4a1, 4a2, 4b1, 4b2, 4c1, 4c2), a relay device 5 (5a, 5b, 5c), and a vehicle information unit 6. The access point 4 is provided at each of the front and rear vehicle ends in order to connect the vehicles 2 with each other by a wireless LAN. The relay device 5 is provided in each vehicle 2 and is connected to the access point 4 of the own vehicle 2. The vehicle information unit 6 is provided in each vehicle 2 and has in-vehicle position information as to whether each access point 4 of the own vehicle 2 is located at the frontmost portion, the connecting portion, or the rearmost portion of the formation 3. Each relay device 5 receives in-vehicle position information from the vehicle information unit 6 of the own vehicle 2, and puts the access points 4a1 and 4c2 of the own vehicle 2 whose in-vehicle position information is the frontmost part or the rearmost part into a wave stop state. The access points 4a2, 4b1, 4b2, and 4c1 of the own vehicle 2 whose in-vehicle position information is a connecting portion are set to the open wave state.

車両間通信システム１は、車両情報ユニット６への車両内位置情報の入力操作を受ける切替機７（７ａ１、７ａ２、７ｂ１、７ｃ１、７ｃ２）を有する。運転台のある車端部に設けられたアクセスポイント４ａ１、４ａ２、４ｂ１、４ｃ１、４ｃ２の車両内位置情報は、切替機７ａ１、７ａ２、７ｂ１、７ｃ１、７ｃ２によって設定される。運転台の無い車端部に設けられたアクセスポイント４ｂ２の車両内位置情報は、連結部とされる。 The vehicle-to-vehicle communication system 1 has a switching device 7 (7a1, 7a2, 7b1, 7c1, 7c2) that receives an operation of inputting in-vehicle position information to the vehicle information unit 6. The in-vehicle position information of the access points 4a1, 4a2, 4b1, 4c1, and 4c2 provided at the end of the vehicle where the driver's cab is located is set by the switching machines 7a1, 7a2, 7b1, 7c1, and 7c2. The in-vehicle position information of the access point 4b2 provided at the end of the vehicle without a driver's cab is referred to as a connecting portion.

各中継装置５ａ、５ｂ、５ｃは、ＩＰアドレスを有するとともに、自編成３の運行系統毎にその運行系統の編成両数を含むマスターデータが予め記憶される。中継装置５には、１つの主系の中継装置５ａと、それ以外の従系の中継装置５ｂ、５ｃがある。主系の中継装置５ａは、各運行系統の運転が始まる前に、マスターデータから編成両数の情報を取得し、その運行系統の車両編成情報を作成して全ての従系の中継装置５ｂ、５ｃに送る。図２に示すように、車両編成情報は、編成両数の情報と、編成内の全中継装置５ａ、５ｂ、５ｃのＩＰアドレス及び主系・従系の区別である。各中継装置５ａ、５ｂ、５ｃは、その車両編成情報を用いて互いに通信を行う（図１参照）。 Each relay device 5a, 5b, 5c has an IP address, and master data including the number of trains of the operation system is stored in advance for each operation system of the self-organization 3. The relay device 5 includes one main system relay device 5a and other secondary system relay devices 5b and 5c. Before the operation of each operation system starts, the main system relay device 5a acquires information on the number of trains from the master data, creates vehicle organization information for the operation system, and creates all the slave system relay devices 5b, Send to 5c. As shown in FIG. 2, the vehicle formation information is the information on the number of cars in the formation, the IP addresses of all the relay devices 5a, 5b, and 5c in the formation, and the distinction between the main system and the slave system. The relay devices 5a, 5b, and 5c communicate with each other using the vehicle formation information (see FIG. 1).

主系の中継装置５ａは、車両編成情報を作成する時、一つ前の運行系統の車両編成情報を有する場合、その車両編成情報で特定される他の中継装置５ｂ、５ｃを個別に検索して車両編成情報を更新する。主系の中継装置５ａは、それ以外の場合、不特定の他の中継装置５を検索して車両編成情報を新たに作成する。 When the main relay device 5a creates the vehicle formation information, if it has the vehicle formation information of the previous operation system, it individually searches for other relay devices 5b and 5c specified by the vehicle formation information. And update the vehicle formation information. In other cases, the main relay device 5a searches for another unspecified relay device 5 and newly creates vehicle formation information.

本実施形態では、主系の中継装置５は、先頭車両２ａに設けられた中継装置５ａとされる。なお、主系の中継装置５は、最後尾車両２ｃに設けられた中継装置５ｃとされてもよい。 In the present embodiment, the relay device 5 of the main system is a relay device 5a provided in the leading vehicle 2a. The relay device 5 of the main system may be the relay device 5c provided in the rearmost vehicle 2c.

車両間通信システム１の各構成をさらに詳述する。鉄道において列車は、車両２が組成されて駅間を運転される。列車の運行経路の体系を運行系統という。列車に用いられる車両２が組成されたものは、編成（列車編成）と呼ばれる。複数の車両２ａ、２ｂ、２ｃが編成３を構成する場合、車両２ａ、２ｂ、２ｃが連結される。編成３を構成する車両２の両数を編成両数という。なお、車両２ａ、２ｂ、２ｃを総称して車両２と記載している。編成両数は、本実施形態では３両であるが、２両や４両以上であってもよい。 Each configuration of the vehicle-to-vehicle communication system 1 will be described in more detail. In the railway, the train is operated between stations with the vehicle 2 composed. The system of train operation routes is called the operation system. The composition of the vehicle 2 used for the train is called a train formation (train formation). When a plurality of vehicles 2a, 2b, and 2c form the formation 3, the vehicles 2a, 2b, and 2c are connected. The number of vehicles 2 constituting the formation 3 is referred to as the number of formations. The vehicles 2a, 2b, and 2c are collectively referred to as vehicle 2. The number of trains is 3 in this embodiment, but it may be 2 or 4 or more.

車両間通信システム１は、複数の車両２ａ、２ｂ、２ｃを連結した編成３内でＬＡＮを構築するためのシステムである。このＬＡＮは、各車両２内の有線ＬＡＮと車両間の無線ＬＡＮから成る。アクセスポイント４は、無線ＬＡＮを構築するための機器である。アクセスポイント４が無線で接続されることによって、車両間の無線ＬＡＮが構築される。なお、アクセスポイント４ａ１、４ａ２、４ｂ１、４ｂ２、４ｃ１、４ｃ２を総称してアクセスポイント４と記載している。 The vehicle-to-vehicle communication system 1 is a system for constructing a LAN in an organization 3 in which a plurality of vehicles 2a, 2b, and 2c are connected. This LAN includes a wired LAN in each vehicle 2 and a wireless LAN between vehicles. The access point 4 is a device for constructing a wireless LAN. By wirelessly connecting the access points 4, a wireless LAN between vehicles is constructed. The access points 4a1, 4a2, 4b1, 4b2, 4c1, and 4c2 are collectively referred to as access points 4.

中継装置５は、情報を中継等する装置であり、ＣＰＵ、メモリ、インターフェース等を有し、メモリに保存されたプログラムを実行することによって機能する。中継装置５は、車両２内で、アクセスポイント４及び車両情報ユニット６と接続される。なお、中継装置５ａ、５ｂ、５ｃを総称して中継装置５と記載している。なお、通常、列車がワンマンの場合には、主系の中継装置５は、先頭車両２ａに設けられた中継装置５ａとされ、ツーマン（車掌同乗）の場合には、最後尾車両２ｃに設けられた中継装置５ｃとされる。 The relay device 5 is a device that relays information, has a CPU, a memory, an interface, and the like, and functions by executing a program stored in the memory. The relay device 5 is connected to the access point 4 and the vehicle information unit 6 in the vehicle 2. The relay devices 5a, 5b, and 5c are collectively referred to as the relay device 5. Normally, when the train is one-man, the main relay device 5 is the relay device 5a provided in the leading car 2a, and in the case of two-man (with the conductor), it is provided in the last car 2c. It is said to be a relay device 5c.

中継装置５には、マスターデータが入力端末８によって入力され、マスターデータが記憶される。マスターデータは、列車系統番号マスターデータとも呼ばれ、運行系統毎に付与された自編成の運行（停止駅順、時刻等）が明確化された列車系統番号毎に、停止駅、通過駅、編成両数が記載されたデータである。このデータのうち、編成両数が車両編成情報の作成に用いられる。なお、マスターデータは、車両間通信システム１以外にも利用される。 Master data is input to the relay device 5 by the input terminal 8, and the master data is stored. Master data is also called train system number master data, and for each train system number that clarifies the self-organized operation (stop station order, time, etc.) assigned to each operation system, stop station, passing station, organization. Both numbers are listed data. Of this data, the number of trains is used to create vehicle formation information. The master data is also used for other than the vehicle-to-vehicle communication system 1.

車両情報ユニット６は、車両２からの情報（切替機７の操作で入力される情報）を受け取り、中継装置５に出力する装置である。 The vehicle information unit 6 is a device that receives information from the vehicle 2 (information input by operating the switching device 7) and outputs the information to the relay device 5.

切替機７は、車両２の運転台の状態（最前部、連結部、最後部のいずれか）を設定するスイッチである。車両の切妻部は、運転台が無く、必ず連結部となるので、切替機７は設けられない。なお、切替機７ａ１、７ａ２、７ｂ１、７ｃ１、７ｃ２を総称して切替機７と記載している。 The switching machine 7 is a switch for setting the state of the cab of the vehicle 2 (any of the frontmost portion, the connecting portion, and the rearmost portion). Since the gable portion of the vehicle does not have a driver's cab and is always a connecting portion, the switching machine 7 is not provided. The switching machines 7a1, 7a2, 7b1, 7c1 and 7c2 are collectively referred to as the switching machine 7.

上記のように構成された車両間通信システム１において、アクセスポイント４は、共通の認証情報が設定された他のアクセスポイント４を検索し、共通の認証情報が設定されたアクセスポイント４があれば、自動で接続する。編成３の最前部、最後部のアクセスポイント４ａ１、４ｃ２は、車両間接続が不要であるが、動作させると、同様の動作を行う。この動作が他編成への誤接続の原因となる。本実施形態では、車両内位置情報が最前部又は最後部である自車両２のアクセスポイント４を停波状態にするので、最前部と最後部のアクセスポイント４ａ１、４ｃ２が停波状態となり、不要な誤接続が防止される。なお、停波状態とは、アクセスポイント４が電波の発出を停止している状態である。停波状態では、アクセスポイント４は、無線接続をしない。開波状態とは、アクセスポイント４が電波を発出している状態である。相手のアクセスポイント４がこの電波を受信することによって無線接続される。中継装置５からアクセスポイント４への停波指示と開波指示は、例えば、ＳＮＭＰによって行われる。ＳＮＭＰは、プロトコルの一種であり、ネットワークを構築する機器の状態確認や状態制御が可能である。 In the vehicle-to-vehicle communication system 1 configured as described above, the access point 4 searches for another access point 4 for which common authentication information is set, and if there is an access point 4 for which common authentication information is set, , Connect automatically. The access points 4a1 and 4c2 at the frontmost portion and the rearmost portion of the formation 3 do not require inter-vehicle connection, but when they are operated, the same operation is performed. This operation causes erroneous connection to other organizations. In the present embodiment, since the access point 4 of the own vehicle 2 whose position information in the vehicle is the frontmost portion or the rearmost portion is stopped, the frontmost portion and the rearmost access points 4a1 and 4c2 are stopped in the wave state, which is unnecessary. Wrong connection is prevented. The wave stop state is a state in which the access point 4 has stopped emitting and emitting radio waves. When the wave is stopped, the access point 4 does not make a wireless connection. The open wave state is a state in which the access point 4 emits radio waves. The access point 4 of the other party is wirelessly connected by receiving this radio wave. The wave stop instruction and the wave open instruction from the relay device 5 to the access point 4 are given by, for example, SNMP. SNMP is a kind of protocol, and it is possible to check the status and control the status of the devices that construct the network.

車両間通信システム１において、無線接続をする場合、接続開始時にマルチキャスト＿ＡＬＬを発出し、不特定の相手との接続要求を行うと、誤接続の原因となりうる。マルチキャスト＿ＡＬＬとは、同一ネットワーク内の不特定の相手との接続を可能とするために発出するパケットだからである。そこで、車両間通信システム１において、接続相手が明確化されている場合、マルチキャスト＿個別を発出し、特定の相手との接続要求を行う。マルチキャスト＿個別とは、同一ネットワーク内の特定の相手との接続を可能とするために発出するパケットだからである。車両間通信システム１は、車両編成情報を用いることにより、車両編成情報で特定される相手との接続要求を行うことになる。すなわち、本実施形態では、中継装置５は、車両編成情報を用いて互いに通信を行うので、誤接続が防止される。 In the inter-vehicle communication system 1, when a wireless connection is made, if multicast_ALL is issued at the start of connection and a connection request is made with an unspecified partner, it may cause an erroneous connection. This is because multicast_ALL is a packet issued to enable connection with an unspecified partner in the same network. Therefore, in the inter-vehicle communication system 1, when the connection partner is clarified, multicast_individual is issued and a connection request with a specific partner is made. This is because multicast_individual is a packet issued to enable connection with a specific partner in the same network. By using the vehicle formation information, the vehicle-to-vehicle communication system 1 makes a connection request with a partner specified by the vehicle formation information. That is, in the present embodiment, since the relay devices 5 communicate with each other using the vehicle formation information, erroneous connection is prevented.

例えば、列車が運行系統の運行終了後、次の運行系統の運行開始時（折り返し時等）に、車両間通信システム１は、車両間の接続要求を一つ前の運行系統の車両編成情報を用いて、マルチキャスト＿個別を発出することによって、マルチキャスト＿ＡＬＬの発出を抑える。すなわち、一つ前の運行系統の車両編成情報がある場合、中継装置５は、その車両編成情報で特定される他の中継装置５を個別に検索して車両編成情報を更新し、その車両編成情報を用いて互いに通信を行うので、誤接続が防止される。なお、一つ前の運行系統の車両編成情報で特定される中継装置５からの応答が無い場合、車両編成が変更されたと判断され、車両間通信システム１は、マルチキャスト＿ＡＬＬの発出によって、不特定の他の中継装置を検索して編成両数分の車両編成情報を新たに作成する。また、初回の連結時等で、車両編成情報が無い場合、車両間通信システム１は、マルチキャスト＿ＡＬＬの発出によって、同様に車両編成情報を新たに作成する。 For example, after the train has finished operating the operation system, when the operation of the next operation system starts (when turning back, etc.), the vehicle-to-vehicle communication system 1 sends a connection request between vehicles to the vehicle organization information of the previous operation system. It is used to suppress the issuance of multicast_ALL by issuing multicast_individual. That is, when there is vehicle formation information of the previous operation system, the relay device 5 individually searches for another relay device 5 specified by the vehicle formation information, updates the vehicle formation information, and updates the vehicle formation information. Since information is used to communicate with each other, erroneous connections are prevented. If there is no response from the relay device 5 specified by the vehicle formation information of the previous operation system, it is determined that the vehicle formation has been changed, and the vehicle-to-vehicle communication system 1 is unspecified due to the issuance of multicast_ALL. Search for other relay devices and create new vehicle formation information for the number of trains. Further, when there is no vehicle formation information at the time of the first connection or the like, the vehicle-to-vehicle communication system 1 newly creates the vehicle formation information by issuing the multicast_ALL.

なお、本発明は、上記の実施形態の構成に限られず、発明の要旨を変更しない範囲で種々の変形が可能である。例えば、中継装置５と車両情報ユニット６を一体に構成してもよい。 The present invention is not limited to the configuration of the above embodiment, and various modifications can be made without changing the gist of the invention. For example, the relay device 5 and the vehicle information unit 6 may be integrally configured.

１ 車両間通信システム
２、２ａ、２ｂ、２ｃ 車両
３ 編成
４、４ａ１、４ａ２、４ｂ１、４ｂ２、４ｃ１、４ｃ２ アクセスポイント
５、５ａ、５ｂ、５ｃ 中継装置
６ 車両情報ユニット
７、７ａ１、７ａ２、７ｂ１、７ｃ１、７ｃ２ 切替機 1 Vehicular communication system 2, 2a, 2b, 2c Vehicle 3 formation 4, 4a1, 4a2, 4b1, 4b2, 4c1, 4c2 Access point 5, 5a, 5b, 5c Relay device 6 Vehicle information unit 7, 7a1, 7a2, 7b1 , 7c1, 7c2 switching machine

Claims (5)

複数の車両を連結した編成内でＬＡＮを構築する車両間通信システムであって、
各車両内の有線ＬＡＮと、
車両間の無線ＬＡＮと、
車両間を前記無線ＬＡＮで接続するために前後の各車端部に設けられるアクセスポイントと、
各車両に設けられて自車両の前記アクセスポイントに前記有線ＬＡＮで接続された中継装置と、
各車両に設けられて自車両の前記各アクセスポイントが編成の最前部、連結部、最後部のいずれに位置するかの車両内位置情報を有する車両情報ユニットを備え、
前記各中継装置は、ＣＰＵ及びメモリを有し、
編成の最前部と最後部の前記アクセスポイントは、停波状態となり、
連結部の前記アクセスポイントは、開波状態となり、
前記各中継装置は、自車両の前記車両情報ユニットから前記車内位置情報を受けて、自車両の前記アクセスポイントへの停波指示によってそのアクセスポイントを前記停波状態にし、自車両の前記アクセスポイントへの開波指示によってそのアクセスポイントを前記開波状態にし、
前記各中継装置は、ＩＰアドレスを有するとともに、自編成の運行系統毎にその運行系統の編成両数を含むマスターデータが予め記憶され、
前記中継装置には、１つの主系の中継装置と、それ以外の従系の中継装置があり、
主系の前記中継装置は、各運行系統の運転が始まる前に、前記マスターデータから編成両数の情報を取得し、その運行系統の車両編成情報を作成して全ての従系の前記中継装置に送り、
前記車両編成情報は、編成両数の情報と、編成内の全中継装置のＩＰアドレス及び主系・従系の区別であり、
前記各中継装置は、前記車両編成情報を用いて互いに通信を行うことを特徴とする車両間通信システム。 It is an inter-vehicle communication system that builds a LAN in a formation that connects multiple vehicles.
Wired LAN in each vehicle and
Wireless LAN between vehicles and
Access points provided at the front and rear ends of each vehicle to connect between vehicles via the wireless LAN, and
A relay device provided in each vehicle and connected to the access point of the own vehicle by the wired LAN, and
A vehicle information unit provided in each vehicle and having in-vehicle position information as to whether each access point of the own vehicle is located at the front part, the connecting part, or the rearmost part of the formation is provided.
Each of the relay devices has a CPU and a memory, and has a CPU and a memory.
The access points at the front and back of the formation are in a stopped wave state.
The access point at the connecting portion is in an open wave state .
Each of the relay devices receives the in-vehicle position information from the vehicle information unit of the own vehicle, puts the access point in the wave stop state by the wave stop instruction to the access point of the own vehicle, and causes the access point of the own vehicle. The access point is put into the open wave state by instructing the open wave to
Each of the relay devices has an IP address, and master data including the number of trains of the operation system is stored in advance for each operation system of the own organization.
The relay device includes one main system relay device and another secondary system relay device.
Before the operation of each operation system starts, the relay device of the main system acquires information on the number of trains from the master data, creates vehicle organization information of the operation system, and creates the vehicle organization information of the operation system, and the relay device of all the slave systems. Send to
The vehicle formation information is information on the number of trains, the IP addresses of all relay devices in the formation, and the distinction between the main system and the slave system.
Each of the relay devices is an inter-vehicle communication system characterized in that the vehicle formation information is used to communicate with each other . 前記各中継装置は、情報を中継する機能を有することを特徴とする請求項１に記載の車両間通信システム。 The inter-vehicle communication system according to claim 1 , wherein each relay device has a function of relaying information. 前記車両情報ユニットへの前記車両内位置情報の入力操作を受ける切替機を有し、
運転台のある車端部に設けられた前記アクセスポイントの車両内位置情報は、前記切替機によって設定され、
運転台の無い車端部に設けられた前記アクセスポイントの車両内位置情報は、連結部とされることを特徴とする請求項１に記載の車両間通信システム。 It has a switching machine that receives an input operation of the vehicle interior position information to the vehicle information unit.
The in-vehicle position information of the access point provided at the end of the vehicle where the driver's cab is located is set by the switching device.
The inter-vehicle communication system according to claim 1 , wherein the in-vehicle position information of the access point provided at the end of the vehicle without a driver's cab is a connecting portion. 主系の前記中継装置は、前記車両編成情報を作成する時、一つ前の運行系統の車両編成情報を有する場合、その車両編成情報で特定される他の中継装置を個別に検索して車両編成情報を更新し、それ以外の場合、不特定の他の中継装置を検索して車両編成情報を新たに作成することを特徴とする請求項１に記載の車両間通信システム。 When the relay device of the main system has the vehicle formation information of the previous operation system when creating the vehicle formation information, the vehicle is individually searched for other relay devices specified by the vehicle formation information. The inter-vehicle communication system according to claim 1 , wherein the formation information is updated, and in other cases, another unspecified relay device is searched for and new vehicle formation information is created. 主系の前記中継装置は、先頭車両又は最後尾車両に設けられた中継装置とされることを特徴とする請求項１又は請求項４に記載の車両間通信システム。 The inter-vehicle communication system according to claim 1 or 4 , wherein the relay device of the main system is a relay device provided in the leading vehicle or the rearmost vehicle.
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