JPH03168434A - Remote supervisory method - Google Patents
Remote supervisory methodInfo
- Publication number
- JPH03168434A JPH03168434A JP1305068A JP30506889A JPH03168434A JP H03168434 A JPH03168434 A JP H03168434A JP 1305068 A JP1305068 A JP 1305068A JP 30506889 A JP30506889 A JP 30506889A JP H03168434 A JPH03168434 A JP H03168434A
- Authority
- JP
- Japan
- Prior art keywords
- change information
- state change
- station
- monitored
- status change
- 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
Links
- 238000000034 method Methods 0.000 title claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 30
- 230000005540 biological transmission Effects 0.000 description 6
- 230000005856 abnormality Effects 0.000 description 5
- 238000000605 extraction Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は遠方監視方弐に関し、特に、被監視局から監視
局へ通知される状態変化情報の脱落を防止することがで
きる遠方監視方弐に関する．〔従来の技術〕
従来、この種の遠方監視方式に於いては、被監視局は監
視項目の状態が変化した場合、監視項目の状態を示す状
態変化情報を監視局に通知するだけであった．
〔発明が解決しようとする課題〕
上述したように、従来は、監視項目の状態が変化した場
合、監視項目の状態を示す状態変化情報を監視局に通知
するだけであるので、監視局と被監視局との間の通信に
異常が発生した喝合、状態変化情報が脱落することがあ
るという問題があった，
本発明の目的は状態変化情報の脱落を防止することにあ
る．
〔課題を解決するための手段〕
本発明は上記目的を達戒するため、
被監視局から監視局へ監視項目に対する状態変化情報を
通知する遠方監視方弐に於いて、前記被監視局は監視項
目に状態変化が発生することにより、状態変化情報に状
態変化の発生順を示す発生番号を付加して前記監視局へ
通知し、前記監視局は前記被監視局から状態変化情報が
通知されることにより、状態変化情報に付加されている
発生番号に基づいて脱落している状態変化情報が存在す
るか否かを判定し、脱落している状態変化情報が存在す
ると判定することにより、状態変化情報の通知元の被監
視局に対して脱落した状態変化情報の再送を要求する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a remote monitoring method 2, and particularly to a remote monitoring method 2 that can prevent the omission of status change information notified from a monitored station to a monitoring station. Regarding. [Prior Art] Conventionally, in this type of remote monitoring system, when the status of a monitored item changes, the monitored station simply notifies the monitoring station of status change information indicating the status of the monitored item. ．． [Problems to be Solved by the Invention] As described above, conventionally, when the status of a monitored item changes, the monitoring station is simply notified of the status change information indicating the status of the monitored item. There has been a problem in which state change information may be dropped due to an abnormality in communication with the monitoring station.The purpose of the present invention is to prevent state change information from being dropped. [Means for Solving the Problems] In order to achieve the above object, the present invention provides a remote monitoring method in which a monitored station notifies a monitoring station of status change information regarding a monitored item. When a state change occurs in an item, an occurrence number indicating the order of occurrence of the state change is added to the state change information and notified to the monitoring station, and the monitoring station is notified of the state change information from the monitored station. By this, it is determined whether or not there is any missing state change information based on the occurrence number added to the state change information, and by determining that there is any missing state change information, the state change A request is made to the monitored station that sent the information to retransmit the dropped status change information.
被監視局は監視項目の状態が変化すると、状態変化情報
に状態変化の発生順を示す発生番号を付加して監視局へ
通知する。監視局は被監視局から状態変化情報が通知さ
れると、それに付加されている発生番号に基づいて脱落
している状態変化情報が存在するか否かを判定する．そ
して、脱落している状態変化情報が存在すると判定する
ことにより、状態変化情報の通知元の被監視局に脱落し
た状態変化情報の再送を要求する．
〔実施例）
次に本発明の実施例について図面を参照して詳細に説明
する。When the status of a monitored item changes, the monitored station adds an occurrence number indicating the order of occurrence of the status change to the status change information and notifies the monitoring station. When the monitoring station is notified of state change information from the monitored station, it determines whether there is any missing state change information based on the occurrence number attached to it. Then, by determining that the missing state change information exists, it requests the monitored station that is the notification source of the state change information to retransmit the dropped state change information. [Example] Next, an example of the present invention will be described in detail with reference to the drawings.
第ｌ図は本発明の実施例のブロック図であり、被監視局
１と、監視局２とから構戒されている。FIG. 1 is a block diagram of an embodiment of the present invention, which is monitored by a monitored station 1 and a monitoring station 2. FIG.
被監視局１は監視項目が入力される監視項目人力端子３
と、監視項目の状態の変化を検出することにより監視項
目の状態を示す状態変化情報を生戒する状態変化検出回
路７と、状態変化検出回路７が生或した状態変化情報に
状態変化の発生順を示す発生番号を付加する状態変化番
号付加回路８と、状態変化情報を送信する状態変化送信
回路９とを含んでいる．また、監視局２は被監視局ｌか
らの状態変化情報４を受信する状態変化受信回路１０と
、状態変化受信回路１０が受信した状態変化情報から発
生番号を抽出する状態変化情報番号抽出回路１１と、状
態変化情報番号抽出回路１１が前回抽出した発生番号と
今回抽出した発生番号とを照合することにより脱落した
状態変化情報が存在するか否かを判定し、脱落した状態
変化情報が存在すると判定することにより、脱落した状
態変化情報に付加されているべき発生番号を含む状態変
化情報順序異常通知６を出力する状態変化情報番号照合
回路ｌ２と、状態変化情報順序異常通知６に含まれてい
る発生番号を含む状態変化情報再送要求５を出力する状
態変化情報再送要求回路１３とを含んでいる．
被監視局１内の状態変化検出回路７は監視項目入力端子
３を介して加えられている監視項目の状態変化を検出す
ると、監視項目の現在の状態を示す状態変化情報を生戒
して状態変化番号付加回路８に加える。状態変化番号付
加回路８は状態変化検出回路７から状態変化情報が加え
られると、それに状態変化の発生順を示す発生番号を付
加して状態変化送信回路９に加え、状態変化送信回路９
は状態変化番号付加回路８から加えられた発生番号の付
加された状態変化情報４を監視局２へ送信する。また、
状態変化送信回路９は状態変化情報再送要求回路１３か
らの状態変化情報再送要求５に備えて監視局２へ送信し
た状態変化情報をその内部に設けられている蓄積部（図
示せず）に蓄積しておく。The monitored station 1 is a monitoring item manual terminal 3 into which monitoring items are input.
a state change detection circuit 7 that detects state change information indicating the state of the monitored item by detecting a change in the state of the monitored item; It includes a state change number adding circuit 8 that adds an occurrence number indicating the order, and a state change transmitting circuit 9 that transmits state change information. The monitoring station 2 also includes a state change receiving circuit 10 that receives state change information 4 from the monitored station l, and a state change information number extraction circuit 11 that extracts an occurrence number from the state change information received by the state change receiving circuit 10. Then, the state change information number extraction circuit 11 determines whether or not there is any missing state change information by comparing the occurrence number extracted last time with the occurrence number extracted this time. A state change information number matching circuit 12 outputs a state change information order abnormality notification 6 that includes the occurrence number that should have been added to the dropped state change information by making a determination; and a status change information retransmission request circuit 13 that outputs a status change information retransmission request 5 including the occurrence number. When the state change detection circuit 7 in the monitored station 1 detects a change in the state of the monitored item added via the monitored item input terminal 3, it monitors the state change information indicating the current state of the monitored item and detects the state. Add to change number addition circuit 8. When state change information is added from the state change detection circuit 7, the state change number addition circuit 8 adds an occurrence number indicating the order of occurrence of the state change to the state change transmission circuit 9, and sends the state change information to the state change transmission circuit 9.
transmits the state change information 4 to which the occurrence number added from the state change number adding circuit 8 is added to the monitoring station 2. Also,
The state change transmission circuit 9 stores the state change information transmitted to the monitoring station 2 in a storage section (not shown) provided therein in preparation for the state change information retransmission request 5 from the state change information retransmission request circuit 13. I'll keep it.
被監視局１から送信された発生番号の付加された状態変
化情報４は監視局２内の状態変化受信回路１０で受信さ
れ、状態変化情報番号抽出回路１ｌは状態変化受信回路
ｌＯが受信した状態変化情報４に含まれている発生番号
を抽出して状態変化情報番号照合回路１２に加える．状
ａ変化情報番号照合回路１２は状態変化情報番号抽出回
路ｌ１から前回加えられた発生番号と今回加えられた発
生番号とを照合し、脱落した状態変化情報が存在するか
否かを判定する。そして、脱落した状態変化情報が存在
すると判定した場合は脱落した状態変化情報に付加され
ているはずの発生番号を含んだ状態変化情報順序異常通
知６を状態変化情報再送要求回路ｌ３に加える．これに
より、状態変化情報再送要求回路１３は状態変化情報順
序異常通知６に含まれている発生番号を含む状態変化情
報再送要求５を被監視局１の状態変化送信回路９に加え
る。The state change information 4 to which the occurrence number has been added transmitted from the monitored station 1 is received by the state change receiving circuit 10 in the monitoring station 2, and the state change information number extraction circuit 1l detects the state received by the state change receiving circuit IO. The occurrence number included in the change information 4 is extracted and added to the state change information number matching circuit 12. The status a change information number matching circuit 12 compares the occurrence number added last time from the status change information number extraction circuit l1 with the occurrence number added this time, and determines whether or not there is any missing status change information. If it is determined that the dropped state change information exists, a state change information order abnormality notification 6 containing the occurrence number that should have been added to the dropped state change information is sent to the state change information retransmission request circuit l3. As a result, the state change information retransmission request circuit 13 sends a state change information retransmission request 5 including the occurrence number included in the state change information order abnormality notification 6 to the state change transmission circuit 9 of the monitored station 1 .
状態変化送信回路９は状態変化情報再送要求５が加えら
れると、蓄積部に蓄積されている状態変化情報の中から
状態変化情報再送要求５に含まれている発生番号が付加
されている状態変化情報を取り出し、監視局２へ再送す
る。When the state change information retransmission request 5 is added, the state change transmission circuit 9 selects a state change to which the occurrence number included in the state change information retransmission request 5 is added from among the state change information stored in the storage section. The information is extracted and retransmitted to the monitoring station 2.
以上説明したように、本発明は、被監視局から監視局へ
状態変化情報を送信する際、伏態変化情報に状態変化の
発生順を示す発生番号を付加して監視局へ送信するよう
にし、監視局では状態変化情報に付加されている発生番
号に基づいて脱落している状態変化情報が存在するか否
かを判定し、脱落している状態変化情報が存在すると判
定した場合、被監視局に再送要求を通知するものである
ので、状態変化情報の脱落を防止することができる効果
がある．As explained above, the present invention adds an occurrence number indicating the order of occurrence of the state change to the hidden state change information when transmitting the state change information from the monitored station to the monitoring station. , the monitoring station determines whether there is missing state change information based on the occurrence number added to the state change information, and if it is determined that there is missing state change information, the monitored station Since it notifies the station of a retransmission request, it has the effect of preventing state change information from being dropped.
第１図は本発明の実施例のブロック図である。
図に於いて、１・・・被監視局、２・・・監視局、３・
・・監視項目入力端子、４・・・状態変化情報、５・・
・状態変化情報再送要求、６・・・状態変化情報順序異
常通知、７・・・状態変化検出回路、８・・・状態変化
番号付加回路、９・・・状態変化送信回路、１０・・・
状態変化受信回路、Ｉ１・・・状態変化情報番号抽出回
路、１２・・・状態変化情報番号照合回路、１３・・・
状態変化情報再送要求回路．FIG. 1 is a block diagram of an embodiment of the invention. In the figure, 1...monitored station, 2...monitoring station, 3...
...Monitoring item input terminal, 4...Status change information, 5...
- Status change information retransmission request, 6... Status change information order abnormality notification, 7... Status change detection circuit, 8... Status change number addition circuit, 9... Status change transmission circuit, 10...
State change receiving circuit, I1... State change information number extraction circuit, 12... State change information number matching circuit, 13...
Status change information retransmission request circuit.
Claims (1)
通知する遠方監視方式に於いて、 前記被監視局は監視項目に状態変化が発生することによ
り、状態変化情報に状態変化の発生順を示す発生番号を
付加して前記監視局へ通知し、前記監視局は前記被監視
局から状態変化情報が通知されることにより、状態変化
情報に付加されている発生番号に基づいて脱落している
状態変化情報が存在するか否かを判定し、脱落している
状態変化情報が存在すると判定することにより、状態変
化情報の通知元の被監視局に対して脱落した状態変化情
報の再送を要求することを特徴とする遠方監視方式。[Scope of Claims] In a remote monitoring method in which a monitored station notifies a monitoring station of status change information regarding a monitored item, the monitored station reports status change information to the monitored item due to a status change occurring in the monitored item. An occurrence number indicating the order of occurrence of the change is added and notified to the monitoring station, and the monitoring station is notified of the status change information from the monitored station, and based on the occurrence number added to the status change information. By determining whether there is any missing status change information, and determining that there is any missing status change information, the status change information that has been dropped is detected for the monitored station that is the notification source of the status change information. A remote monitoring method characterized by requesting retransmission of information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1305068A JPH03168434A (en) | 1989-11-24 | 1989-11-24 | Remote supervisory method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1305068A JPH03168434A (en) | 1989-11-24 | 1989-11-24 | Remote supervisory method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03168434A true JPH03168434A (en) | 1991-07-22 |
Family
ID=17940734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1305068A Pending JPH03168434A (en) | 1989-11-24 | 1989-11-24 | Remote supervisory method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03168434A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6092109A (en) * | 1997-06-30 | 2000-07-18 | Nec Corporation | Information matching system and its matching method for matching information between terminal equipment connected via network |
-
1989
- 1989-11-24 JP JP1305068A patent/JPH03168434A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6092109A (en) * | 1997-06-30 | 2000-07-18 | Nec Corporation | Information matching system and its matching method for matching information between terminal equipment connected via network |
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