JPH0127617B2 - - Google Patents
Info
- Publication number
- JPH0127617B2 JPH0127617B2 JP19190082A JP19190082A JPH0127617B2 JP H0127617 B2 JPH0127617 B2 JP H0127617B2 JP 19190082 A JP19190082 A JP 19190082A JP 19190082 A JP19190082 A JP 19190082A JP H0127617 B2 JPH0127617 B2 JP H0127617B2
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- information
- polling
- terminal
- transmitted
- 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.)
- Expired
Links
- 230000005540 biological transmission Effects 0.000 claims description 126
- 238000000034 method Methods 0.000 claims description 6
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
- H04L12/437—Ring fault isolation or reconfiguration
Description
【発明の詳細な説明】
本発明は、センタポーリングによる時分割情報
のサイクリツク伝送方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for cyclically transmitting time-division information using center polling.
１組のセンタ伝送装置と複数組の端末伝送装置
で構成する１対ｎサイクリツク伝送システムで
は、伝送路の故障は致命的な影響があるため、迂
回伝送路が備えられることが多い。例えば、鉄道
の主要な幹線区間におけるCTC装置では、セン
タ伝送装置（中央装置）と各端末伝送装置（駅装
置）間を２対の伝送路で直列に接続し、常用伝送
路を構成するとともに、最末端の駅装置と中央装
置間に２対の伝送路にて迂回伝送路が構成されて
いる。 In a 1:n cyclic transmission system consisting of one set of center transmission equipment and a plurality of sets of terminal transmission equipment, a detour transmission path is often provided because a failure in the transmission path has a fatal effect. For example, in a CTC device used in major trunk sections of railways, two pairs of transmission lines are connected in series between a center transmission device (central device) and each terminal transmission device (station device) to form a regular transmission path. A detour transmission path is configured by two pairs of transmission paths between the terminal station equipment and the central equipment.
上述のCTC装置における通常の動作は、常用
伝送路の１対を制御回線として、中央装置からポ
ーリング情報または制御情報を送信すると、各駅
装置は、中央装置に近い駅装置から順次該情報を
受信するとともに中継送信し、該当駅装置のみ
が、自駅の表示情報を他の１対の伝送路（表示回
線）を用いて中央装置に送信する。上記動作を各
駅装置を順番にかつサイクリツクにくり返してい
る。 The normal operation of the above-mentioned CTC device is that when polling information or control information is transmitted from the central device using one pair of regular transmission lines as the control line, each station device sequentially receives the information from the station device closest to the central device. Only the relevant station equipment transmits the display information of its own station to the central equipment using another pair of transmission lines (display lines). The above operation is repeated cyclically in each station equipment in turn.
上記状態において、常用伝送路に故障が発生す
ると故障した以遠の駅装置との伝送ができなくな
りスキツプ動作が行われる。このスキツプ動作が
既定回数連続発生すると中央装置の動作監視機能
により該当駅装置の不能を検知し警報を出力す
る。取扱担当者は、該警報により故障した伝送路
の場所を判断して、故障ケ所以遠の駅装置を迂回
伝送路に切換え、上述のサイクル動作を継続させ
ることにより、機能を維持する方法がとられてい
る。 In the above state, if a failure occurs in the regular transmission line, transmission with station equipment beyond the failure becomes impossible, and a skip operation is performed. When this skipping operation occurs a predetermined number of times in succession, the operation monitoring function of the central device detects the failure of the relevant station equipment and outputs an alarm. The person in charge determines the location of the failed transmission line based on the alarm, switches station equipment beyond the failure point to a detour transmission line, and continues the above-mentioned cycle to maintain functionality. ing.
したがつて、伝送路に故障が発生してから迂回
伝送路に切換が完了するまでの時間は情報の伝達
が断たれるため、この時間が長びくとシステム機
能を継続するさいに支障をきたすこともある他、
迂回切換設備の面で経済性などに欠点があつた。 Therefore, information transmission is interrupted during the period from when a failure occurs in the transmission line until switching to the detour transmission line is completed, and if this time is prolonged, it may be difficult to continue system functions. There are also
There were disadvantages in terms of economy and other aspects of the detour switching equipment.
本発明は上述の欠点を改善するためになされた
もので、１対の伝送路によりループ伝送回路を構
成し、各端末伝送装置の左右両側の伝送路から同
時に到着した情報は予め定められた側の伝送路か
ら受信し、また一方の側の伝送路から情報を受信
中に他方の側の伝送路から到着した情報は受信し
ないようにして後述するポーリング伝送を行うこ
とにより、伝送路の故障が発生しても伝送回路の
切換を必要とせず、信頼性の高い時分割情報のル
ープ伝送方法を提供するものである。 The present invention has been made to improve the above-mentioned drawbacks, and a loop transmission circuit is configured by a pair of transmission lines, and information arriving simultaneously from the transmission lines on both the left and right sides of each terminal transmission device is transmitted to a predetermined side. By performing polling transmission (described later) by not receiving information arriving from the transmission path on the other side while receiving information from the transmission path on the other side, failures in the transmission path can be prevented. The present invention provides a highly reliable loop transmission method for time-division information that does not require switching of transmission circuits even if such occurrence occurs.
以下、本発明の実施例を図に従つて説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は、本発明の方法を実施するための回路
構成を示すブロツク図で、センタ伝送装置CTと
複数の端末伝送装置T1，T2…Toを各１対の伝送
路L1，L2…Lo，Lo+1で直列にかつループ状に接
続することにより、回路を構成する。 FIG. 1 is a block diagram showing a circuit configuration for implementing the method of the present invention, in which a center transmission device CT and a plurality of terminal transmission devices T 1 , T 2 , . A circuit is constructed by connecting L 2 ...L o and L o+1 in series and in a loop.
第２図は、第１図における端末伝送装置T1，
T2…Toを５組で構成した場合の正常時の動作を
説明するためのタイムチヤートである。 FIG. 2 shows the terminal transmission equipment T 1 ,
This is a time chart for explaining normal operation when T 2 ...T o is configured with five sets.
第１図および第２図において、センタ伝送装置
CTより端末伝送装置T1を呼び出すポーリング情
報P1あるいはポーリング機能を有した制御情報
C1を両側の伝送路L1，Lo+1へ同時に送信すると、
端末伝送装置T1では、伝送路L1より該情報を受
信するとともに伝送路L2へ中継送信を行い、該
情報がポーリング情報P1であれば自端末伝送装
置T1の表示情報I1を外部より入力した後、表示情
報I1を伝送路L1へ送信し、制御情報C1であれば制
御情報C1を外部に出力した後に表示情報I1を送信
する、ポーリング伝送を行う。 In Figures 1 and 2, the center transmission device
Polling information P 1 that calls terminal transmission device T 1 from CT or control information with polling function
When C 1 is simultaneously transmitted to transmission lines L 1 and L o+1 on both sides,
The terminal transmission device T 1 receives the information from the transmission path L 1 and relays it to the transmission path L 2 , and if the information is the polling information P 1 , it displays the display information I 1 of its own terminal transmission device T 1 . After inputting from the outside, the display information I 1 is transmitted to the transmission path L 1 , and if it is the control information C 1 , the display information I 1 is transmitted after the control information C 1 is output to the outside, thereby performing polling transmission.
また端末伝送装置T2は、端末伝送装置T1から
中継送信されたポーリング情報P1あるいは制御
情報C1を伝送路L2から受信し、伝送路L2に中継
送信する。 Further, the terminal transmission device T 2 receives polling information P 1 or control information C 1 relayed from the terminal transmission device T 1 from the transmission path L 2 and relays it to the transmission path L 2 .
一方、端末伝送装置T5，T4では、順次伝送路
L6，L5よりポーリング情報P1あるいは制御情報
C1を受信するとともに中継送信を行う。 On the other hand, in terminal transmission devices T 5 and T 4 , transmission lines are sequentially
Polling information P1 or control information from L 6 and L 5
Receives C 1 and performs relay transmission.
端末伝送装置T3では、ポーリング情報P1ある
いは制御情報C1が両側の伝送路L3，L4から同時
あるいは該情報を片側の伝送路から受信中に反対
側の伝送路から該情報が到着する。この場合、前
者のときは予め定められた側の伝送路から、受信
し、後者のときは上記反対側の伝送路から到着し
た情報は受信しないようにして、上述のポーリン
グ伝送を行う。また、例えば伝送路L3から該情
報を受信し、伝送路L4へ中継送信した場合、伝
送路L4にて該情報同志の衝突が起きるが、情報
の伝達が終了しているのでポーリング伝送には全
く支障はない。 In the terminal transmission device T 3 , polling information P 1 or control information C 1 is received from the transmission paths L 3 and L 4 on both sides at the same time, or while the information is being received from one transmission path, the information arrives from the transmission path on the opposite side. do. In this case, in the former case, the information is received from the transmission path on the predetermined side, and in the latter case, the information arriving from the transmission path on the opposite side is not received, and the above-mentioned polling transmission is performed. Also, for example, if the information is received from transmission path L 3 and relayed to transmission path L 4 , a collision will occur between the pieces of information on transmission path L 4 , but since the information transmission has ended, polling transmission is performed. There is no problem at all.
センタ伝送装置CTは、先に端末伝送装置T1か
ら送信された表示情報I1を伝送路L1より受信する
ことにより、端末伝送装置T1のポーリング伝送
を終了し、引続きこのポーリング伝送を端末伝送
装置T2，T3，T4，T5の順に行い１サイクルを終
了するが、端末伝送装置T2，T3のポーリング伝
送は、伝送路L1，L2，L3によりポーリング情報
P2，P3あるいは制御情報C2，C3と表示情報I2，I3
が伝送され、端末伝送装置T4，T5のポーリング
伝送は、伝送路L6，L5によりポーリング情報P4，
P5あるいは制御情報C4，C5と表示情報I4，I5が伝
送される。 The center transmission device CT ends the polling transmission of the terminal transmission device T 1 by receiving the display information I 1 previously transmitted from the terminal transmission device T 1 from the transmission path L 1 , and then continues this polling transmission to the terminal. The transmission devices T 2 , T 3 , T 4 , and T 5 are transmitted in this order to complete one cycle, but the polling transmissions of the terminal transmission devices T 2 and T 3 are performed using the transmission lines L 1 , L 2 , and L 3 to transmit polling information.
P 2 , P 3 or control information C 2 , C 3 and display information I 2 , I 3
is transmitted, and the polling transmission of terminal transmission devices T 4 and T 5 transmits polling information P 4 ,
P5 or control information C4 , C5 and display information I4 , I5 are transmitted.
第３図は、第２図における端末伝送装置T1，
T2間の伝送路L2が故障した場合の動作を説明す
るためのタイムチヤートである。 FIG. 3 shows the terminal transmission equipment T 1 ,
This is a time chart for explaining the operation when the transmission line L 2 between T 2 fails.
第３図において、センタ伝送装置CTよりポー
リング情報P1，P2，P3，P4，P5あるいは制御情
報C1，C2，C3，C4，C5が両側の伝送路L1，L6に
同時に送信されると、端末伝送装置T1から中継
送信された該情報は、伝送路が故障のため端末伝
送装置T2には伝達されない。一方、端末伝送装
置T5から中継送信された該情報は、端末伝送装
置T4，T3，T2へ順次中継伝送されるため端末伝
送装置T1からの表示情報I1は伝送路L1へ送信さ
れるが、端末伝送装置T2，T3，T4，T5からの表
示情報I2，I3，I4，I5は伝送路L3，L4，L5，L6に
送信および中継される。 In FIG. 3, polling information P 1 , P 2 , P 3 , P 4 , P 5 or control information C 1 , C 2 , C 3 , C 4 , C 5 is transmitted from the center transmission device CT to the transmission line L 1 on both sides. , L 6 , the information relayed from the terminal transmission device T 1 is not transmitted to the terminal transmission device T 2 due to a failure in the transmission path. On the other hand, the information relayed from the terminal transmission device T 5 is sequentially relayed to the terminal transmission devices T 4 , T 3 , and T 2 , so the display information I 1 from the terminal transmission device T 1 is transmitted through the transmission path L 1 However, the display information I 2 , I 3 , I 4 , I 5 from the terminal transmission devices T 2 , T 3 , T 4 , T 5 is transmitted to the transmission paths L 3 , L 4 , L 5 , L 6 Sent and relayed.
すなわち、伝送路が故障した場合には、故障し
た伝送路L2の両端の端末伝送装置T1，T2まで自
動的に中継送信機能により伝送路が結ばれ、サイ
クル伝送の継続が行われる。 That is, when a transmission line fails, the transmission line is automatically connected to the terminal transmission devices T 1 and T 2 at both ends of the failed transmission line L 2 by the relay transmission function, and cycle transmission is continued.
本発明の伝送方法によれば、伝送路の故障を監
視し回線の切換を行う機能など全く不要であると
ともに、伝送路が故障すると同時に該伝送路の両
端の端末伝送装置まで自動的に中継伝送が行われ
るので、ポーリング情報P1，P2…Poあるいは制
御情報C1，C2…Coおよび表示情報I1，I2…Ioの欠
落が極めて少ない。またループを構成する伝送路
が各１対でよく、したがつてセンタ伝送装置CT
および各端末伝送装置T1，T2…Toの受信、中継
送信などの機能は１組で構成できる他、伝送路の
故障監視、回線切換が不要のため極めて論理が簡
単となり、低価格で、かつ信頼性の高い伝送装置
を得ることができる。 According to the transmission method of the present invention, there is no need for functions such as monitoring transmission line failures and switching lines, and as soon as a transmission line failure occurs, the transmission is automatically relayed to the terminal transmission devices at both ends of the transmission line. is performed, there is extremely little chance of missing polling information P 1 , P 2 , . . . Po or control information C 1 , C 2 , . In addition, the number of transmission lines constituting the loop may be one pair each, so the center transmission device CT
The functions such as reception and relay transmission of each terminal transmission device T 1 , T 2 ...T o can be configured in one set, and there is no need to monitor transmission line failures or switch lines, making the logic extremely simple and inexpensive. , and a highly reliable transmission device can be obtained.
第１図は、本発明の方法を実施するための回路
構成を示すブロツク図、第２図は、第１図に準じ
端末伝送装置を５組にて構成した場合の正常の動
作を説明するためのタイムチヤート、第３図は、
第２図において伝送路が故障した場合の動作を説
明するためのタイムチヤートを示す。
CT……センタ伝送装置、T1，T2……To……
端末伝送装置、L1，L2…Lo，Lo+1……伝送路。
FIG. 1 is a block diagram showing a circuit configuration for implementing the method of the present invention, and FIG. 2 is for explaining normal operation when five sets of terminal transmission equipment are configured according to FIG. 1. The time chart, figure 3, is
FIG. 2 shows a time chart for explaining the operation when a transmission line fails. CT...Center transmission equipment, T1 , T2 ...T o ...
Terminal transmission equipment, L 1 , L 2 ...L o , L o+1 ... transmission line.
Claims (1)
クリツク伝送において、一組のセンタ伝送装置と
複数組の端末伝送装置を各一対の伝送路で直列に
かつループ状に接続し、上記センタ伝送装置から
各端末伝送装置を呼び出すポーリング情報あるい
はポーリング機能を含んだ制御情報を両側の伝送
路へ同時に送信し、各端末伝送装置では、先に到
着した側の上記情報または表示情報を受信して反
対側の伝送路へ中継送信するとともに、該受信情
報が自端末を指定するポーリング情報であれば、
該情報を受信した側の伝送路に自端末伝送装置で
作成した表示情報を送信し、制御情報であれば該
制御情報の外部出力と上記表示情報の送信を行
い、またポーリング情報その他が両側伝送路から
同時に到着した場合には、予め定められた側の伝
送路からの情報のみを受信し、反対側の伝送路の
情報は受信しないようにして、上記ポーリング伝
送を行うことを特徴とした時分割情報のループ伝
送方法。1. In cyclic transmission of time-division information using center polling, one set of center transmission equipment and multiple sets of terminal transmission equipment are connected in series and in a loop through each pair of transmission lines, and each terminal transmission equipment is connected from the center transmission equipment to each terminal transmission equipment. Polling information or control information that includes a polling function is sent simultaneously to the transmission line on both sides, and each terminal transmission device receives the above information or display information from the side that arrived first and relays it to the transmission line on the opposite side. If the received information is polling information specifying the own terminal,
The display information created by the own terminal transmission device is transmitted to the transmission path on the side that received the information, and if it is control information, the control information is output to the outside and the display information is transmitted, and polling information and other information are transmitted on both sides. When the signals arrive simultaneously from the transmission path, the polling transmission is performed by receiving only the information from the transmission path on the predetermined side and not receiving the information from the transmission path on the opposite side. Loop transmission method of segmentation information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19190082A JPS5981944A (en) | 1982-11-02 | 1982-11-02 | Loop transmitting method of time-division information |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19190082A JPS5981944A (en) | 1982-11-02 | 1982-11-02 | Loop transmitting method of time-division information |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5981944A JPS5981944A (en) | 1984-05-11 |
| JPH0127617B2 true JPH0127617B2 (en) | 1989-05-30 |
Family
ID=16282311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19190082A Granted JPS5981944A (en) | 1982-11-02 | 1982-11-02 | Loop transmitting method of time-division information |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5981944A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6471239A (en) * | 1987-09-11 | 1989-03-16 | Fujitsu Ltd | Duplicate supervision system in communication line |
| CN109018114A (en) * | 2018-07-19 | 2018-12-18 | 上海电力学院 | A kind of shared bicycle fault visual identity device of low power consuming |
-
1982
- 1982-11-02 JP JP19190082A patent/JPS5981944A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5981944A (en) | 1984-05-11 |
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