JP2005035352A - Communication system for railway - Google Patents

Communication system for railway Download PDF

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Publication number
JP2005035352A
JP2005035352A JP2003198711A JP2003198711A JP2005035352A JP 2005035352 A JP2005035352 A JP 2005035352A JP 2003198711 A JP2003198711 A JP 2003198711A JP 2003198711 A JP2003198711 A JP 2003198711A JP 2005035352 A JP2005035352 A JP 2005035352A
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JP
Japan
Prior art keywords
signal input
radio
communication system
output base
railway
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2003198711A
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Japanese (ja)
Inventor
Doo Kanayama
道王 金山
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Toshiba Corp
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Toshiba Corp
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Filing date
Publication date
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Priority to JP2003198711A priority Critical patent/JP2005035352A/en
Publication of JP2005035352A publication Critical patent/JP2005035352A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication system for a railway which makes communication speed increase and ensures stability. <P>SOLUTION: The communication system for the railway is provided with: a railway vehicle to of transmit/receive radio; a plurality of signal output/input base stations 2 provided on a periphery of a track and carrying out transmitting/receiving of data through a narrow area radio with the railway vehicle; and a central control unit 1 for transmitting/receiving information to/from the signal output/input base station 2. The plurality of signal output/input base stations 2 are provided at the periphery of the track such that a radio cover area of one station and a radio cover area of another base station are partly overlapped at least. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、鉄道用通信システムに関するものである。
【０００２】
【従来の技術】
従来の鉄道用通信システムについて、図を参照し詳細に説明する。図５は、従来の鉄道用通信システムの構成図である。尚、同一の機器でも説明上個別に区別する必要がある場合には、ローマ字を付して機器同士を区別する。
従来の鉄道用通信システムは、中央制御装置１，信号出入力基地２，車両３，固定情報発信局４から構成されている。
このように構成された鉄道用通信システムにおいて、中央制御装置１と信号出入力基地局２は、広域無線（例えばＤｏｐａ（登録商標）網）を用いて通信をし、車両３と信号出入力基地局２は、狭域無線（例えばＳＳ無線）を用いて通信をし、車両３と中央制御装置１は、広域無線を用いて通信していた。車両３の位置情報は、固定情報発信局４を通過することにより、車両３は自車両の位置を認識する。
このように構成された従来の鉄道用通信システムは、装置間のケーブルが必要なくなり、装置の小型化，メンテナンスフリー化に貢献していた。
【０００３】
【特許文献１】
特開平０９−３０１１７６号公報
【発明が解決しようとする課題】
しかし、従来の鉄道用通信システムにおいて、中央制御装置１，信号出入力基地局２間及び中央制御装置１と車両３間の通信に、広域無線を用いているため、通信に最低２〜３秒かかるという問題や、広域無線は基本的に公衆回線であるため、回線状況が本システム以外の要素によって変動したり、災害時には電話回線に制限がかかり使用できないという問題がある。また、広域無線を用いた場合、電波状態の悪化などにより接続が切れてしまっても、切断を検知できないため、自動的に復旧をさせるのが難しかった。さらに、復旧には再ダイアルアップが必要となり、再接続までに１０数秒のタイムラグが発生していた。
そこで、本発明の目的は、通信速度を早くすることが出来、安定性を確保できる鉄道用通信システムを提供することである。
【０００４】
【課題を解決するための手段】
上記課題は、無線を送受信可能な鉄道車両と、軌道周辺に設けられ、この鉄道車両と狭域無線を介してデータの送受信を行う複数の信号出入力基地局と、前記信号出入力基地局と情報を送受信する中央制御装置とを備えた鉄道用通信システムにおいて、前記複数の信号出入力基地局は、自機の無線覆域と他の信号出入力基地局の無線覆域とが少なくとも一部分は重なるように軌道周辺に敷設されたことにより達成することができる。
上記課題は、無線を送受信可能な鉄道車両と、軌道周辺に設けられ、この鉄道車両と狭域無線を介してデータの送受信を行う複数の信号出入力基地局と、前記鉄道車両と情報を送受信する中央制御装置とを備えた車両用無線応用システムにおいて、前記複数の信号出入力基地局は、自機の無線覆域と他の信号出入力基地局の無線覆域又は前記中央制御装置の無線覆域とが少なくとも一部分は重なるように軌道周辺に敷設されたことにより達成することができる。
【０００５】
【発明の実施の形態】
（第１の実施の形態）
本発明に基づく第１の実施の形態の鉄道用通信システムについて、図を参照し詳細に説明する。図１は、本発明に基づく第１の実施の形態の鉄道用通信システムの構成図である。尚図５に記載したものと構造上同一のものについては、同符号を付して説明を省略する。
本発明に基づく第１の実施の形態の鉄道用通信システムは、中央制御装置１，自機（挟域無線）の無線覆域と他の信号出入力基地局（挟域無線）の無線覆域とが少なくとも一部分は重なるように軌道周辺に敷設された信号出入力基地２，車両３，固定情報発信局４から構成されている。
このように構成された鉄道用通信システムにおいて、信号出入力基地局２ｃと中央制御装置１間では、各信号出入力基地局で検知した情報（閉塞制御，連動制御を行うため全ての情報を送る），閉塞信号，車両内の機器状態等の情報が、有線接続により情報が送受信される。尚、全ての信号出入力基地局２が中央制御装置１と接続する必要はなく、ある任意の信号出入力装置２（最低１台、信頼性を上げるために複数台でもよい）が中央制御装置１と有線で接続する。信号出入力基地局２から車両３へは、閉塞信号（速度信号含む），前方車両位置，車両ＩＤ（車両から受信したＩＤを確認のため返送する），地上側の機器状態（故障情報）等の情報が挟域無線により送信される。車両３から信号出入力基地局２へは、車両ＩＤ，車両位置（固定閉塞の場合、省略することもある），ドア状態，車両内の機器状態（故障情報）等の情報が挟域無線により送信される。尚、情報の混同を防ぐために、各信号出入力基地局同士の通信チャンネルと、車両と信号出入力基地局の通信チャンネルを別々にするという方法や、１周期ごとに交互に通信する方法などを採用することが好ましい。
【０００６】
このように構成された鉄道用通信システムにおいて、信号出入力基地局２は、狭域無線の無線覆域が少なくとも１つは重なるように敷設することで、車両との通信を行うと共に、隣接する検知装置との通信を行う。例えば、信号出入力基地局２ａに入力された情報は、狭域無線覆域Ａ、Ｂにより信号出入力基地局２ｂへ送信される。次に、信号出入力基地局２ｂは、前記、信号出入力基地局２ａから受信した情報に、信号出入力基地局２ｂに入力された情報を追加して、狭域無線覆域Ａと無線覆域が重なっている狭域無線覆域Ｂ，挟域無線覆域Ｂと無線覆域が重なっている挟域無線覆域Ｃを介して信号出入力基地局２ｃへ送信する。信号出入力基地局２ｃは、前記信号出入力基地局２ａの情報と前記信号出入力基地局２ｂの情報に、信号出入力基地局２ｃに入力された情報を追加して、中央制御装置１へ送信する。
このように構成された鉄道用通信システムは、狭域無線の無線覆域を重ね合わせることによって、中央制御装置１，信号出入力基地局２，車両との通信を行なうため、通信速度を早くすることが出来、安定性を確保できる鉄道用通信システムを提供することが出来る。
（第２の実施の形態）
本発明に基づく第２の実施の形態の鉄道用通信システムについて、図を参照し詳細に説明する。図２は、本発明に基づく第１の実施の形態の鉄道用通信システムの構成図である。尚図１に記載したものと構造上同一のものについては、同符号を付して説明を省略する。
【０００７】
本発明に基づく第２の実施の形態の鉄道用通信システムは、中央制御装置１と信号出入力基地局２間の通信にも狭域無線を適用したことを特徴としている。
このように構成された鉄道用通信システムにおいて、信号出入力基地局２ａから送信された情報は、複数の信号出入力基地局２を経由して中央制御装置１に受信される。そのため、各信号出入力基地局２ｂは、前の信号出入力基地局２ａから入力された情報に、自装置が検知した車両情報を追加して、次の信号出入力基地局２ｃに送信する。この際に、信号出入力基地局２が、誤った領域に車両情報を追加しないように、書き込み可能なメモリ領域をロックするといった方法や、メモリのロックに失敗した場合に、各信号出入力基地局２に特有の秘密鍵を設定しておき、受信側の機器の持っている公開鍵にて情報の正誤を判断するという方法や送信側の機器でハッシュを付加するという方法を採用するのが好ましい。
このように構成された鉄道用通信システムは、広域無線を使うことなく、中央制御装置１，信号出入力基地局２，車両と通信を行なう事が出来るので、通信速度を早くすることが出来、安定性を確保できる鉄道用通信システムを提供することが出来る。
【０００８】
（第３の実施の形態）
本発明に基づく第３の実施の形態の鉄道用通信システムについて、図を参照し詳細に説明する。図３は、本発明に基づく第３の実施の形態の鉄道用通信システムの構成図である。尚、図１に記載したものと構造上同一のものについては、同符号を付して説明を省略する。
本発明に基づく第３の実施の形態の鉄道用通信システムは、信号出入力基地局２，車両３から構成されている。
このように構成された鉄道用通信システムは、前方での車両の検知位置によって、後方の車両に対する信号を決定する。後方の車両に対する信号は、信号出入力基地局２により演算された速度指令等でも良いし、前方の車両２ｂの位置情報等でも良い。
このように構成された鉄道用通信システムにおいて、軌道回路でない位置検知装置を用いた場合に、上り車両と下り車両の走行方向を区別するため、車両３が、信号出入力基地局２へ送信する情報の中に、走行方向を入れ、車両３の走行方向を信号出入力基地局２が、判断できるようにしてある。
このように構成された鉄道用通信システムは、広域無線を使うことなく、中央制御装置１，信号出入力基地局２，車両と通信を行なう事が出来るので、通信速度を早くすることが出来、安定性を確保できる鉄道用通信システムを提供することが出来る。
【０００９】
尚、本発明に基づく第３の実施の形態の鉄道用通信システムにおいて、車両３の走行方向を区別するために、車両３から信号出入力基地局２へ送信される情報に、走行方向を入れているが、信号出入力基地局２のアンテナをダイバシティアンテナで構成し、どの方向（領域）から情報が入ってきたかによって、車両３の走行方向を判断する構成としても良い（図４参照）。
【００１０】
【発明の効果】
本発明により、通信速度を早くすることが出来、安定性を確保できる鉄道用通信システムを提供することが出来る。
【図面の簡単な説明】
【図１】本発明に基づく第１の実施の形態の鉄道用通信システムの構成図である。
【図２】本発明に基づく第２の実施の形態の鉄道用通信システムの構成図である。
【図３】本発明に基づく第３の実施の形態の鉄道用通信システムの構成図である。
【図４】本発明に基づく第３の実施の形態の鉄道用通信システムの変形例の構成図である。
【図５】従来の鉄道用通信システムの構成図である。
【符号の説明】
１・・・中央制御装置
２・・・信号出入力基地局
３・・・車両
４・・・固定情報発信局[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a railway communication system.
[0002]
[Prior art]
A conventional railway communication system will be described in detail with reference to the drawings. FIG. 5 is a configuration diagram of a conventional railway communication system. In addition, when it is necessary to distinguish even the same apparatus on description, a Roman character is attached | subjected and it distinguishes between apparatuses.
A conventional railway communication system includes a central control unit 1, a signal input / output base 2, a vehicle 3, and a fixed information transmission station 4.
In the railway communication system configured as described above, the central control device 1 and the signal input / output base station 2 communicate with each other using a wide area radio (for example, Dopa (registered trademark) network), and the vehicle 3 and the signal input / output base station. The station 2 communicated using narrow area radio (for example, SS radio), and the vehicle 3 and the central control apparatus 1 communicated using wide area radio. As the position information of the vehicle 3 passes through the fixed information transmitting station 4, the vehicle 3 recognizes the position of the own vehicle.
The conventional railway communication system configured as described above eliminates the need for a cable between apparatuses, and contributes to downsizing and maintenance-free of the apparatus.
[0003]
[Patent Document 1]
JP 09-301176 A [Problems to be Solved by the Invention]
However, in the conventional railway communication system, since wide area radio is used for communication between the central control unit 1 and the signal input / output base station 2 and between the central control unit 1 and the vehicle 3, it takes at least 2 to 3 seconds for communication. There are problems such as this, and wide area radio is basically a public line, so there are problems that the line status fluctuates depending on factors other than this system, and that a telephone line is limited and cannot be used in a disaster. In addition, when using wide area wireless communication, it is difficult to automatically recover because disconnection cannot be detected even if the connection is cut off due to deterioration of radio wave conditions. In addition, re-dial-up is required for recovery, and a time lag of several ten seconds has occurred before reconnection.
Accordingly, an object of the present invention is to provide a railway communication system capable of increasing the communication speed and ensuring stability.
[0004]
[Means for Solving the Problems]
The above-mentioned problems are a railway vehicle capable of transmitting and receiving radio, a plurality of signal input / output base stations that are provided around the track and transmit / receive data to / from the railway vehicle via a narrow area radio, and the signal input / output base station In a railway communication system comprising a central control device for transmitting and receiving information, the plurality of signal input / output base stations are at least partially composed of their own radio coverage areas and other signal I / O base station radio coverage areas. This can be achieved by laying around the track so as to overlap.
The above-described problems include a railway vehicle that can transmit and receive radio, a plurality of signal input / output base stations that are provided around the track and transmit and receive data to and from the railway vehicle, and transmit and receive information to and from the railway vehicle. A plurality of signal input / output base stations including a radio coverage area of the own device and a radio coverage area of another signal input / output base station or a radio frequency of the central control apparatus. This can be achieved by laying around the track so that at least a part of the covered area overlaps.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
A railway communication system according to a first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a configuration diagram of a railway communication system according to a first embodiment of the present invention. 5 that are structurally the same as those described in FIG.
The communication system for railways according to the first embodiment of the present invention includes a radio coverage of the central control device 1 and its own device (band radio) and a radio coverage of other signal input / output base stations (band radio). Are composed of a signal input / output base 2, a vehicle 3, and a fixed information transmission station 4 laid around the track so that at least a part thereof overlaps.
In the railway communication system configured as described above, between the signal input / output base station 2c and the central control unit 1, information detected by each signal input / output base station (all information is sent to perform block control and interlock control). ), Information such as a block signal, a device state in the vehicle, and the like are transmitted and received by wired connection. Note that it is not necessary for all signal input / output base stations 2 to be connected to the central control device 1, and any arbitrary signal output / input device 2 (a minimum of one, a plurality of units may be used to increase the reliability) may be provided. 1 and wired connection. From the signal input / output base station 2 to the vehicle 3, an occlusion signal (including a speed signal), a forward vehicle position, a vehicle ID (an ID received from the vehicle is returned for confirmation), an equipment state on the ground side (failure information), etc. Is transmitted by the narrowband radio. From the vehicle 3 to the signal input / output base station 2, information such as a vehicle ID, a vehicle position (may be omitted in the case of fixed blockage), a door state, a device state in the vehicle (failure information), etc. Sent. In addition, in order to prevent the confusion of information, the method of making the communication channel of each signal input / output base station and the communication channel of the vehicle and the signal input / output base station separate, the method of communicating alternately every one cycle, etc. It is preferable to adopt.
[0006]
In the railway communication system configured as described above, the signal input / output base station 2 communicates with the vehicle and is adjacent to each other by laying so that at least one of the radio coverage areas of the narrow area radio overlaps each other. Communicates with the detection device. For example, information input to the signal input / output base station 2a is transmitted to the signal input / output base station 2b by the narrow area radio coverage areas A and B. Next, the signal input / output base station 2b adds the information input to the signal input / output base station 2b to the information received from the signal input / output base station 2a, so that the narrow area radio coverage area A and the radio coverage area are covered. The signal is transmitted to the signal input / output base station 2c via the narrow area wireless coverage area B where the areas overlap and the narrow area wireless coverage area B and the narrow area wireless coverage area C where the wireless coverage area overlaps. The signal input / output base station 2c adds the information input to the signal input / output base station 2c to the information of the signal input / output base station 2a and the information of the signal input / output base station 2b, and sends the information to the central controller 1. Send.
The railway communication system configured in this manner increases the communication speed by performing communication with the central control unit 1, the signal input / output base station 2, and the vehicle by overlapping the radio coverage of the narrow area radio. Therefore, it is possible to provide a railway communication system that can ensure stability.
(Second Embodiment)
A railway communication system according to a second embodiment of the present invention will be described in detail with reference to the drawings. FIG. 2 is a configuration diagram of the railway communication system according to the first embodiment of the present invention. Note that the same structural elements as those shown in FIG.
[0007]
The railway communication system according to the second embodiment based on the present invention is characterized in that the narrow area radio is also applied to the communication between the central controller 1 and the signal input / output base station 2.
In the railway communication system configured as described above, the information transmitted from the signal input / output base station 2 a is received by the central controller 1 via the plurality of signal input / output base stations 2. Therefore, each signal input / output base station 2b adds the vehicle information detected by itself to the information input from the previous signal input / output base station 2a, and transmits the information to the next signal input / output base station 2c. At this time, if the signal input / output base station 2 locks the writable memory area so that the vehicle information is not added to the wrong area, or if the memory lock fails, each signal input / output base station 2 The secret key unique to the station 2 is set, and the method of judging the correctness of the information with the public key of the receiving device or the method of adding the hash at the transmitting device are adopted. preferable.
The railway communication system configured as described above can communicate with the central control unit 1, the signal input / output base station 2, and the vehicle without using a wide area radio, so the communication speed can be increased. A railway communication system capable of ensuring stability can be provided.
[0008]
(Third embodiment)
A railway communication system according to a third embodiment of the present invention will be described in detail with reference to the drawings. FIG. 3 is a configuration diagram of a railway communication system according to a third embodiment of the present invention. Note that the same structural elements as those shown in FIG.
The railway communication system according to the third embodiment of the present invention includes a signal input / output base station 2 and a vehicle 3.
The railway communication system configured in this manner determines a signal for a vehicle behind the vehicle based on the vehicle detection position in the front. The signal for the vehicle behind the vehicle may be a speed command calculated by the signal input / output base station 2 or the position information of the vehicle 2b ahead.
In the railway communication system configured as described above, when a position detection device that is not a track circuit is used, the vehicle 3 transmits to the signal input / output base station 2 in order to distinguish the traveling direction of the ascending vehicle and the descending vehicle. The traveling direction is included in the information so that the signal input / output base station 2 can determine the traveling direction of the vehicle 3.
The railway communication system configured as described above can communicate with the central control unit 1, the signal input / output base station 2, and the vehicle without using a wide area radio, so the communication speed can be increased. A railway communication system capable of ensuring stability can be provided.
[0009]
In the railway communication system according to the third embodiment of the present invention, in order to distinguish the traveling direction of the vehicle 3, the traveling direction is included in information transmitted from the vehicle 3 to the signal input / output base station 2. However, the antenna of the signal input / output base station 2 may be configured by a diversity antenna, and the traveling direction of the vehicle 3 may be determined depending on from which direction (region) information has entered (see FIG. 4).
[0010]
【The invention's effect】
According to the present invention, it is possible to provide a railway communication system capable of increasing the communication speed and ensuring stability.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a railway communication system according to a first embodiment of the present invention.
FIG. 2 is a block diagram of a railway communication system according to a second embodiment of the present invention.
FIG. 3 is a configuration diagram of a railway communication system according to a third embodiment of the present invention.
FIG. 4 is a configuration diagram of a modification of the railway communication system according to the third embodiment of the present invention.
FIG. 5 is a configuration diagram of a conventional railway communication system.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Central control device 2 ... Signal input / output base station 3 ... Vehicle 4 ... Fixed information transmission station

Claims (3)

無線を送受信可能な鉄道車両と、
軌道周辺に設けられ、この鉄道車両と狭域無線を介してデータの送受信を行う複数の信号出入力基地局と、
前記信号出入力基地局と情報を送受信する中央制御装置とを備えた鉄道用通信システムにおいて、
前記複数の信号出入力基地局は、自機の無線覆域と他の信号出入力基地局の無線覆域とが少なくとも一部分は重なるように軌道周辺に敷設されたことを、
特徴とする鉄道用通信システム。A railway vehicle capable of transmitting and receiving radio,
A plurality of signal input / output base stations that are provided around the track and transmit / receive data to / from this railway vehicle via a narrow area radio,
In the communication system for railways comprising the central controller for transmitting and receiving information with the signal input / output base station,
The plurality of signal input / output base stations are laid around the orbit so that the radio coverage of the own device and the radio coverage of other signal input / output base stations overlap at least partially.
A railway communication system. 無線を送受信可能な鉄道車両と、
軌道周辺に設けられ、この鉄道車両と狭域無線を介してデータの送受信を行う複数の信号出入力基地局と、
前記鉄道車両と情報を送受信する中央制御装置とを備えた車両用無線応用システムにおいて、
前記複数の信号出入力基地局は、自機の無線覆域と他の信号出入力基地局の無線覆域又は前記中央制御装置の無線覆域とが少なくとも一部分は重なるように軌道周辺に敷設されたことを、
特徴とする鉄道用通信システム。A railway vehicle capable of transmitting and receiving radio,
A plurality of signal input / output base stations that are provided around the track and transmit / receive data to / from this railway vehicle via a narrow area radio,
In a vehicle radio application system comprising the central control device for transmitting and receiving information with the railway vehicle,
The plurality of signal input / output base stations are laid around the track so that at least a part of the radio coverage of the own device and the radio coverage of another signal input / output base station or the radio coverage of the central controller overlap. That
A railway communication system. 前記請求項１及び前記請求項２記載の車両用無線応用システムにおいて、
前記無線は、狭域無線であることを、
特徴とする鉄道用通信システム。In the vehicle radio application system according to claim 1 or 2,
The radio is a narrow area radio,
A railway communication system.
JP2003198711A 2003-07-17 2003-07-17 Communication system for railway Pending JP2005035352A (en)

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JP2009232374A (en) * 2008-03-25 2009-10-08 Railway Technical Res Inst Wireless lan system
KR20130066404A (en) * 2011-12-12 2013-06-20 한국전자통신연구원 A reliable radio communication network duplication method for high speed train and radio communication based high speed train control system using the same

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Patent Citations (6)

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Publication number Priority date Publication date Assignee Title
JPH05145477A (en) * 1991-11-22 1993-06-11 Iwatsu Electric Co Ltd Time division, time compression multiplex mobile body communication equipment
WO1998041435A1 (en) * 1997-03-19 1998-09-24 Hitachi, Ltd. Method and system for controlling train by radio
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009232374A (en) * 2008-03-25 2009-10-08 Railway Technical Res Inst Wireless lan system
KR20130066404A (en) * 2011-12-12 2013-06-20 한국전자통신연구원 A reliable radio communication network duplication method for high speed train and radio communication based high speed train control system using the same
KR101597280B1 (en) 2011-12-12 2016-02-24 한국전자통신연구원 A reliable radio communication network duplication method for high speed train and radio communication based high speed train control system using the same

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