JPH10340211A - Monitoring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a monitoring system that can collect alarms generated during the stop of a monitoring device without omission, and that can collect the alarms generated while a line between a collection device and a preprocessor is cut in the monitoring system. SOLUTION: In the system, the monitoring device 4 receiving a state change notice from the collection device 2 collecting alarm information via the preprocessor sets latest alarm information which the monitoring device 4 stores and gives an information request to the collection device 2. When the generation time (previous time) of the alarm, which is set in an information request telegram, is before the generation time of latest alarm information, which is stored in a data base provided for the collection device 2, the collection device 2 transmits alarm information subsequent to previous time to the monitoring device 4. When previous time is later than the generation time of latest alarm information, which is stored in the data base provided for the collection device 2, the collection device 2 transmits latest alarm information before previous time to the monitoring device4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a monitoring system,
In particular, it relates to a monitoring method capable of collecting alarms generated while the monitoring device is stopped without omission, and early collecting an alarm generated while the line between the collection device and the preprocessing device is disconnected.

[0002] The monitoring system is installed in a monitored system such as an electric power system control system, a flood control system, a communication system, and a traffic management system, which keeps increasing the reliability of operation of the monitored system. Working for you.

[0003] Naturally, power system control systems, flood control systems, and the like are life line systems, and stopping them may endanger human lives. In addition, communication systems and traffic management systems play a role of nerves or blood vessels in economic and social activities, and their suspension has a great effect on economic and social activities.

Therefore, the above-mentioned monitored system is not allowed to stop its operation due to a failure or the like. However, it is impossible to absolutely avoid design flaws, situations that cannot be imagined at the time of design, and deterioration of parts.

Therefore, it is necessary to collect alarms of the monitored system as quickly as possible by the monitoring system and to deal with the alarms at an early stage.

[0006]

2. Description of the Related Art FIG. 1 shows a configuration of a general monitoring system. In FIG. 1, reference numerals 1-1, 1-2, and 1-3 denote monitored devices (the monitored device may be a single device or a plurality of monitored devices). Since the information indicates the occurrence and disappearance of an alarm, the state change information should be abbreviated to state change information, but may be conventionally called an alarm. It is used without it, and sometimes it is described as data,
It should be understood that these have the same meaning in this specification. 3) is a preprocessing device that relays data, and 4 is a monitoring device that processes the collected data.

[0007] The collection device 2 is provided with a primary database 21 (simply indicated as DB in the figure) for storing data collected from each monitored device. Further, the monitoring device 4 is connected to the collection device 2 via the pre-processing device 3.
Collecting function unit 41 for collecting data from
1 is a last database 42 (simply indicated as DB in the figure) storing the last data collected last time (that is, the latest data recognized by the monitoring device), and the collection function unit 41 collects the last data. A storage function unit 43 that performs processing for coding and storing all of the converted data;
, An accumulation database 44 (simply indicated as DB in the figure) for accumulating all the data collected by the collection function unit 41, a generation processing unit 45 for extracting a generated alarm from among the collected alarms, and maintenance. Recovery database 46 (indicated as a forced recovery DB in the figure) for storing alarms that have been forcibly recovered by the user, and a generated alarm database 47 for storing generated alarms (indicated as a generated alarm DB in the figure). ), A recovery processing unit 48 that extracts a recovered alarm from the collected alarms, and a recovery alarm database 49 (in the figure, the recovery alarm database 49) that manages the time of occurrence and recovery of the same alarm when the same alarm is generated / restored. Alarm DB is displayed).

First, the overall operation of the monitoring system having the configuration shown in FIG. 1 will be described. The collection device 2 collects alarm information generated by the monitored device and stores it in the primary database 21.

After storing the collected alarm information, the collection device 2 sends a status change notification (a notification that the state of the monitored device has changed) to the monitoring device 4 via the preprocessing device 3. The collection function unit 41 of the monitoring device 4 that has received the status change notification sets the alarm number and the occurrence time stored in the database 42 last time in the message, and sends the information to the collection device 2 via the preprocessing device 3. Issue a request (information transfer request).

The collection device 2 transmits a response to the information request to the monitoring device 4. Collection function unit 41 that received the information
Stores the latest alarm information in the database 42 last time and passes all the received alarm information to the storage function unit 43.

The storage function unit 43 encodes all the received alarm information and stores it in the storage database 44. The generation processing unit 45 extracts a generated alarm from the alarm information stored in the storage database 44 via the storage function unit 43, and determines whether the extracted alarm information is stored in the forced recovery database 46. I do. If the extracted alarm information is stored in the forced recovery database 46, the alarm that has been once forcibly recovered by the maintenance person has been generated again, and therefore the alarm occurrence time stored in the forced recovery database 46 is rewritten. . If the extracted alarm is not stored in the forced recovery database 46, it means that a normal alarm has been generated, so the extracted alarm information is stored in the generated alarm database 47 and notified to the recovery processing unit 48.

Further, the generation processing unit 45 includes a storage function unit 43
Then, the information of the recovered alarm is extracted from the alarm information stored in the storage database 44 via the storage device 44, and it is also determined whether or not the alarm information is stored in the forced recovery database 46. If the extracted alarm information is stored in the forced recovery database 46, the alarm that has been forcibly recovered by the maintenance person once again occurs, and since the regenerated alarm has been recovered, it is stored in the forced recovery database 46. The alarm information is deleted or the alarm information is marked and notified to the recovery processing unit 48. It should be noted that whether the data is deleted or marked depends on the reason of the forced recovery, but since this is irrelevant to the essence of the present invention, no further description will be given. Further, the extracted alarm information is stored in the forced recovery database 46.
If it is not stored, the normal alarm has been recovered, so the alarm information is deleted from the generated alarm database 47 and the recovery processing unit 48 is notified.

The recovery processing unit 48 generates the same alarm as the generation and recovery of the generated alarm information and the recovery alarm information notified from the generation processing unit 45, and generates an occurrence time and a recovery time on the recovery alarm database 49. Manage.

FIGS. 8 and 9 show the operation of the conventional monitoring system (part 1) and the operation of the conventional monitoring system (part 2).
FIG. 3 is a diagram for explaining exchanges among a collection device, a preprocessing device, and a monitoring device.

8 and 9, reference numeral 2 denotes a collection device,
1 is a primary database, 3 is a pre-processing device, 4 is a monitoring device, and 42 is a previous database (in the figure, it is simply displayed as a database).

In FIG. 8, in the initial state, the primary database 21 of the collection device 2 stores an alarm having an alarm number (1), which occurred at 12:00 on January 17, 1996. Primary database 41 of monitoring device 4
Has the alarm number (1), January 17, 1996, 1
It is assumed that the alarm generated at 2:00 is stored as previously collected data (96.
01.17.12.00 is shown as being stored. ). The stored data includes information on the alarm itself in addition to the alarm number and the alarm occurrence time, but is omitted in the figure. Also, since the stored data is mainly shown in FIG. 8, the collection function unit (41 in FIG. 1), the accumulation function unit (43 in FIG. 1),
Generation processing unit (45 in FIG. 1), recovery processing unit (48 in FIG. 1)
Is not shown.

Here, 13:00 on January 18, 1996
It is assumed that a new alarm has been issued every minute. The collection device 2 collects the new alarm and stores the new alarm in the primary database 21 with the alarm number as (2).

Next, the collection device 2 notifies the monitoring device 4 of the occurrence of the alarm via the preprocessing device 3. This is the state change notification shown in FIG. The collection function unit of the monitoring device 4 that has received the status change notification reads the alarm number (1), which is the data previously stored in the database 42, and the time 96.0.1.17.12.00 of the generation of the alarm, and reads them. Is set as a message for the collection device 2.

Then, the message is sent to the collection device 2 via the preprocessing device 3. This is the information request shown in FIG. The collection device 2 that has received the information request searches the primary database 21 and determines whether or not the alarm set in the message is stored in the primary database 21.
In this case, the alarm with the alarm number (1) and the occurrence time of 96.0.1.17.12.00 set in the message is stored in the primary database 21.

Therefore, the collection device 2 sets the alarm of the alarm number (2), which has occurred this time, and the alarm of the occurrence time 96.0.1.18.13.00 in a message, and transmits the alarm to the monitoring device 4 via the preprocessing device 3. Send to the collection function part. This is the normal response shown in FIG.

When receiving the normal response, the collection function unit (41 in FIG. 1) notifies the storage function unit of the alarm information received in the normal response, and also stores the contents stored in the previous database in 96.
01.17.12.00 to 96.01.18.13.
Replace with 00.

Therefore, no problem occurs in this case. Next, in FIG. 9, in the initial state, the collecting device 2
The primary database 21 has an alarm number (1).
The alarm generated at 12:00 on January 17, 1996 is stored, and the alarm number is (1) in the primary database 41 of the monitoring device 4. The alarm is generated at 12:30 on January 17, 1996. It is assumed that the alarm that should have been performed is stored as data collected previously (96.
01.17.12.30 is displayed. ). The stored data includes information on the alarm itself in addition to the alarm number and the alarm occurrence time, but is omitted in the figure. Further, since the stored data is mainly shown in FIG. 9, the collection function unit (41 in FIG. 1), the storage function unit (43 in FIG. 1),
The generation processing unit (45 in FIG. 1) and the recovery processing unit (48 in FIG. 1) are not shown.

Here, 13:00 on January 18, 1996
It is assumed that a new alarm has been issued every minute. The collection device 2 collects the new alarm and stores the new alarm in the primary database 41 with the alarm number as (2).

Next, the collection device 2 notifies the monitoring device 4 of the occurrence of the alarm via the preprocessing device 3. This is the state change notification shown in FIG. The collection function unit (41 in FIG. 1) of the monitoring device 4 that has received the status change notification has
Of the alarm number (1) and the alarm occurrence time 96.0.11.12.30 from among the data stored in the collection device 2, and set them in a message for the collection device 2.

Then, the message is sent to the collection device 2 via the preprocessing device 3. This is the information request shown in FIG. The collection device 2 that has received the information request searches the primary database and determines whether or not the alarm set in the message is stored in the primary database 21. In this case, the alarm of the alarm number (1) and the occurrence time of 96.01.17.12.30 set in the message is not stored in the primary database 21.

Therefore, the collection device 2 returns a response to the monitoring device 4 assuming that the content of the alarm sent from the monitoring device 4 is abnormal. This is the abnormal response shown in FIG.

The abnormal response is collected by the collecting function unit (41 in FIG. 1).
Is transferred to the maintenance person to prompt the maintenance person to check the status.
Then, the maintenance person checks the state. For this purpose, it is necessary to look at the contents stored in the primary database 21 provided in the collection device 2. However, the collection device 2 is not always close to the monitoring device 4. Therefore, it is not unusual for a maintenance person to go to the collection device 2 and check it for a long time.

Further, as is apparent from the above description, in the conventional monitoring method, the monitoring device 4 requests information in response to a state change notification from the collection device 2 that has collected the alarm information.

[0029]

As described above, it is not uncommon for a maintenance person to take a long time to go to the collection device and check the primary database to check the state. In order to avoid this, a method of checking the status from the monitoring device side is possible, but in this case, a problem occurs.

FIG. 10 shows a problem (part 1) of the conventional monitoring system. In FIG. 10, 1-1 is a monitored device A, 1-2 is a monitored device B, 2 is a collecting device, 21 is a primary database, 3 is a pre-processing device, 4 is a monitoring device, 42
Is the last database. Although a plurality of primary databases 21 are illustrated in the collection device 2, it should be understood that this is not an expression of a plurality of hardware but an expression method for clearly indicating stored contents at different points in time. .
In the following description, it is assumed that the storage capacity of the primary database 21 is 10 data.

FIG. 10A shows a response when an alarm generated while the monitoring system is stopped makes one round of the primary database of the collection device. First, as an initial state, an alarm having an alarm number (1) and an alarm time of 96.01.17.11.00 is displayed (displayed on a primary database having a description “state before alarm goes one round”). Is transferred from the collection device 2 to the monitoring device 4 and is also stored in the database 42 last time. Also, at time 96.01.17.11.
The monitoring device 4 is stopped after 00, and the alarm of the alarm number (2), the alarm number (9) from the occurrence time of 96.01.17.13.000, and the alarm of the occurrence time of 96.06.10.12.00 is monitored. It is assumed that it has not been transferred to the device 4.

Here, while the monitoring device 4 continues to be stopped, the monitored device A1-1 monitors the time 96.06.10.12.30.
Assuming that an alarm has occurred, this alarm information is stored in the primary database 21 as an alarm number (10) and an occurrence time of 96.06.
Written as 10.12.30.

Next, while the monitoring device 4 continues to be stopped, the monitored device B1-2 at the time 96.06.10.13.
If an alarm occurs at 00, this alarm information is stored in the primary database 21 as an alarm number (11) and an occurrence time of 96.0.
Written as 6.10.13.00. However, since the storage capacity of the primary database is 10 data,
This alarm information is overwritten on the address where the alarm of the alarm number (1) is stored. Therefore, the contents stored in the primary database 21 are as shown in the upper part of the collection device 2.

Then, the collection device 2 sends a status change notification to the monitoring device 4. At this time, assuming that the monitoring device 4 has been restored, the monitoring device 4 sets the alarm number (1) and the occurrence time 96.0.
1.17.11.00 is set in the message and an information request is sent.

Upon receiving the information request, the collection device 2 issues an alarm corresponding to the alarm set in the message to the primary database 21.
Search whether it is stored in. In this case, since the alarm set in the message of the information request is not stored in the current primary database 21, the collection device 2 returns an abnormal response to the monitoring device 4.

The monitoring device 4 which has received the abnormal response notifies the maintenance person of that fact, and the maintenance person performs state adjustment for confirming the contents stored in the database. Fig. 10 (b)
Indicates that information is missing during status adjustment.

It is assumed that the collection device 2 returns an abnormal response to the monitoring device 4, and an alarm is generated in the monitored device A1-1 and the monitored device B1-2 while the maintenance person instructs the status adjustment from the monitoring device 4 side. Then, the collection device 2 collects the alarm.

As a result, the contents stored in the primary database 21 are as shown in the upper part of the collection device 2,
The alarms of the alarm numbers (12) and (13) are overwritten on the alarm addresses of the alarm numbers (2) and (3) in the stored contents before the status adjustment.

In this state, the collection device 2 returns a response to the monitoring device 4 side, so that the database of the monitoring device 4 stores the alarms from the alarm number (4) to the alarm number (10) and the overwritten alarm number (11). ) Thereafter, alarms up to the alarm number (13) are transferred.

Therefore, in this case, the alarms of the alarm number (2) and the alarm number (3) are lost without being transferred to the monitoring device 4. In addition, the alarm of the alarm number (1) has disappeared before that when the stored contents have made one round of the database.

As described above, in the conventional monitoring method, the monitoring device requests information by a status change notification from the collection device 2. For this reason, there is a problem that an alarm generated while the line between the collection device and the pre-processing device is temporarily disconnected is not immediately transferred to the monitoring device even when the line is restored. This problem will be described below.

FIG. 11 shows a problem (part 2) of the conventional monitoring system. An alarm generated while the line between the collection device and the pre-processing device is once cut off immediately after the line is restored. It is a figure explaining that it is not transferred to a monitoring device.

It is assumed that the line between the collecting device and the pre-processing device is disconnected at time t1, and the line between the collecting device and the pre-processing device is restored at time t3. Further, at time t2 (t1 <t
It is assumed that the alarm A occurs at 2 <t3).

The collection device attempts to notify the monitoring device of the occurrence of the alarm A, but the notification does not reach the monitoring device because the line between the collection device and the preprocessing device is disconnected.
For this reason, since the information request does not reach the collection device from the monitoring device, the collection device stores the alarm A.

At time t4 (t3 <t4), the alarm B
Is assumed to occur. When the collection device notifies the monitoring device of the occurrence of the alarm B, the information request reaches the collection device from the monitoring device as described above. Therefore, the collection device compares the stored alarm A with the currently generated alarm B. Send information to the monitoring device.

It is unavoidable that the alarm A cannot be transferred while the line between the collection device and the pre-processing device is disconnected. It is problematic that alert A cannot be forwarded immediately. Extremely, considering that it is normal that no alarm is generated, if the alarm B is not generated, it is impossible to transfer the already generated alarm A.

The present invention has been made in view of the above problem, and has been made to collect all alarms generated while a monitoring device is stopped.
It is an object of the present invention to provide a monitoring method capable of early collecting an alarm generated while a line between a collecting device and a preprocessing device is disconnected.

[0048]

The details of the operation of the monitoring system shown in FIG. 1 centering on the monitoring device have been described in detail in the section of the prior art. Here, the basics of the alarm transfer operation according to the present invention in the above monitoring system,
The operation of starting the alarm transfer when the line disconnection between the preprocessing devices is restored will be described.

FIGS. 2 to 4 are diagrams showing the alarm transfer operation of the present invention. FIG. 2 to FIG. 4 schematically show the exchange of information between the primary database 21 of the collection device, the previous database 42 of the monitoring device, and the storage function unit database 44. FIG.

FIG. 2 shows the alarm transfer operation (part 1) of the monitoring system according to the present invention. In the alarm transfer operation, the time of the alarm previously stored in the database 42 is changed to the oldest alarm stored in the primary database 21 of the collection device. This is the alarm transfer operation when the time is before the occurrence time of the alarm.

As described above, upon receiving the status change notification, the monitoring device sets the alarm number stored in the database 42 last time and the time of occurrence of the alarm in a message, and transmits an information request to the collection device. In this case, the alarm number (9) and the occurrence time 9
6.0.1.15.12.00 is set.

The collection device having received the information request searches the primary database 21 and determines whether or not an alarm corresponding to the alarm set in the message is stored in the primary database. In this case, the alarm occurrence time received from the monitoring device is 96.01.15.12.00, and the earliest alarm occurrence time 9 stored in the primary database is 9
Since it is before 6.0.1.17.12.00, the collection device sends to the monitoring device all alerts received after the occurrence time 96.0.1.15.12.00. In this case, information on all alarms stored in the primary database is transferred. Then, the monitoring device stores the received alarm in the accumulation database.

FIG. 3 shows the alarm transfer operation (part 2) of the monitoring system according to the present invention. In the alarm transfer operation, the time of the alarm previously stored in the database 42 is changed to the oldest alarm stored in the primary database 21 of the collection device. Is an alarm transfer operation when the time is between the occurrence time of the latest alarm and the latest alarm.

As described above, upon receiving the status change notification, the monitoring device sets the alarm number and the time of occurrence of the alarm stored in the database 42 last time in a message, and transmits an information request to the collection device. In this case, the alarm number (9) and the occurrence time 9
6.0.1.17.130 is set.

The collection device that has received the information request searches the primary database 21 and determines whether or not an alarm corresponding to the alarm set in the message is stored in the primary database 21. In this case, the alarm occurrence time received from the monitoring device is 96.01.17.12.30,
The latest alarm occurrence time 96.0.10.12, which is later than the oldest alarm occurrence time 96.0.1.17.12.00 stored in the primary database 21 and is stored in the primary database 21 Because it is before .00,
The collection device received the time 96.0.11.12.30.
All subsequent alarms after the closest alarm are transmitted to the monitoring device. In this case, the alarm number (12) stored in the primary database 21 and the occurrence time 96.01.17.
Alerts after the 13.00 alert are forwarded. Then, the monitoring device stores the received alarm in the accumulation database.

FIG. 4 shows an alarm transfer operation (part 3) of the monitoring system according to the present invention. In the alarm transfer operation, the time of the last alarm stored in the database 42 is changed to the latest alarm stored in the primary database 21 of the collection device. This is an alarm transfer operation when the time is after the occurrence time.

As described above, upon receiving the status change notification, the monitoring device sets the alarm number and the time of occurrence of the alarm stored in the database 42 last time in a message, and transmits an information request to the collection device. In this case, the alarm number (9) and the occurrence time 9
6.06.11.07.00 is set.

The collection device that has received the information request searches the primary database 21 and determines whether or not an alarm corresponding to the alarm set in the message is stored in the primary database 21. In this case, the received alarm occurrence time is 96.06.11.07.00, and the latest alarm occurrence time 96.0 stored in the primary database 21.
Since it is later than 6.10.12.00, the collection device sends the closest alert to the monitoring device before the received occurrence time of 96.06.11.07.00. In this case, the alarm number (2) and the occurrence time 96.06.10.12.00
Alerts are forwarded. Then, the monitoring device stores the received alarm in the accumulation database.

As described above, when the alarm corresponding to the alarm set in the message of the information request is not stored in the primary database 21, the collection device does not return an abnormal response, but stores it in the database 42 last time. If the alarm time is earlier than the earliest alarm occurrence time stored in the primary database 21 of the collection device, all the alarm information stored in the primary database 21 is transmitted. If the time of the alarm stored in 42 is between the earliest alarm occurrence time and the latest alarm occurrence time stored in the primary database 21 of the collection device, the alarm time is stored in the primary database 21. The alarm information after the occurrence time stored in the previous database 42 is transmitted, and the alarm time stored in the previous database 42 is Collection device the primary database 21
If the time is later than the time of the latest alarm stored in the collection device, the information of the alarm closest to the generation time stored in the previous database 42 among the alarms stored in the primary database 21 of the collection device is transmitted. I do.

That is, the collection device sends an alarm corresponding to the alarm set in the information request message to the primary database 21.
If not found, valid alert information can be sent to the monitoring device.

Therefore, the maintenance person does not need to adjust the state in response to the abnormal response, so that the burden on the maintenance person is reduced and the state of the monitored system can be quickly known. Further, when a new alarm is generated while the maintenance person adjusts the status on the monitoring device side after the collection device returns an abnormal response, the new alarm information is overwritten with the stored alarm information. Since there is no such information, it is possible to prevent the alarm information from being lost.

If the collection device can find in the primary database an alarm corresponding to the alarm set in the message of the information request, the alarm is set in the same manner as described with reference to FIG. The alarm information following the alarm information following the information is sent to the monitoring device.

FIG. 5 is a diagram for explaining the state of alarm transfer when the line between the collection device and the pre-processing device is disconnected. The preprocessing device periodically monitors the collection device by polling. If the line between the collecting device and the preprocessing device is active, a response is returned from the collecting device to the preprocessing device. However, if the line between the collection device and the preprocessing device is disconnected, there is no response to polling. As a result, the preprocessing device determines the state of the collection device and the line between the collection device and the preprocessing device, and issues a recovery notification to the monitoring device when a response is returned after no response during the previous polling. .

When the line between the collecting device and the preprocessing device is disconnected, even if an alarm has been collected during that time, no transfer has been made, so the monitoring device recovers to collect those alarms. An information request is sent with the notification as a trigger.

Thus, the collection device sends alarm information to the monitoring device while the line between the collection device and the preprocessing device is disconnected.
In the case of FIG. 5, since the alarm A and the alarm B are generated while the line between the collection device and the preprocessing device is disconnected, these alarms are transferred to the monitoring device.

Accordingly, the response to the polling after the line between the collection device and the preprocessing device is restored triggers the collection device.
Alarm information can be sent to the monitoring device while the line between the preprocessors is down.

In the prior art, when a state change notification generated by collecting and issuing an alarm by the collection device triggers the alarm information while the line between the collection device and the pre-processing device is disconnected to the monitoring device, the collection device is connected to the pre-processing device. Even if the line between the processing devices is restored, the alarm information cannot be transferred to the monitoring device while the line between the collection device and the preprocessing device is disconnected unless a new alarm is generated.

Therefore, if the polling period is properly set, the alarm transfer after the recovery of the line between the collecting device and the preprocessing device can be performed early.

[0069]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The monitoring system shown in FIG. 1 operates as described above as a whole, but the alarm transfer operation, which is a feature of the present invention, will be described in detail below.

FIG. 6 shows the alarm transfer operation (part 1) of the present invention.
It is. Hereinafter, description will be given along the reference numerals in FIG. S1. A state change occurs in the monitored device.

S2. The state change information generated by the collection device is collected, and a state change notification is transmitted to the monitoring device via the preprocessing device. S3. The status change notification is received by the collection function unit of the monitoring device.

S4. The collection function unit reads the alarm number and the time of occurrence of the alarm information from the previous database. S5. The collection function unit sets the read alarm number and the occurrence time in the message.

S6. The collection function unit sends the set message to the collection device via the preprocessing device, and requests information. S7. The collection device that has received the information request from the collection function unit searches the primary database and searches for alarm information corresponding to the alarm number and the occurrence time set in the message of the information request.

S8. It is determined whether the alarm information corresponding to the alarm number and the occurrence time set in the message of the information request is stored in the primary database. S9. When the alarm information corresponding to the alarm number and the occurrence time set in the message of the information request is stored in the primary database (Yes), the alarm information next to the alarm information is set in the response message, The data is transmitted to the monitoring device via the preprocessing device.

Incidentally, the response message is composed of a header section and a logging data section for carrying alarm information. If there is alert information to be sent to the primary database,
The collection device transmits valid alarm information on the logging data portion, and when there is no more alarm information to be transmitted to the primary database, the collection device transmits the logging data portion empty. Therefore, the collection function unit can determine whether or not the transfer of the alarm information has been completed by checking the contents of the logging data unit.

S10. The collection function unit determines whether the transfer of the alarm information has been completed. S11. If the collection function unit determines that the transfer of the alarm information has not been completed (No), the received alarm information is stored in the storage database, and the content stored in the previous database is rewritten to the alarm information just received. Then, the process returns to step S4.

In step S4, the collection function unit reads out the alarm information that the collection function unit has just written from the database last time. Thereafter, the processing proceeds as described above up to step S7.

In step S8 again, it is determined whether the alarm information corresponding to the alarm number and the occurrence time set in the message of the information request is stored in the primary database. In this case, since the alarm information read from the primary database and transmitted by the collection device is set in the information request message, steps S9 and S9 are performed.
The process proceeds with 10.

If it is determined that the alarm transfer has not been completed again, steps S4 to S10 are repeated. Finally, after transmitting the latest alarm information stored in the primary database, the collection device transmits the response message with the logging data section empty. When the response message is received, the collection function unit determines in step S10 that the alarm transfer has been completed.

S11. If the collection function unit determines that the alarm transfer has been completed in step S10 (Yes),
Notify all the alarm information received to the generation processing unit. Hereinafter, the processes performed by the generation processing unit and the recovery processing unit are as described above.

S13. In step S8, when it is determined that the alarm information corresponding to the alarm number and the occurrence time set in the message of the information request is not stored in the primary database (No), the message is set to the message of the information request. The relationship between the occurrence time of the alarm (in the figure, this is expressed as the previous time) and the occurrence time of the alarm information stored in the primary database is determined.

Incidentally, in the section of the means for solving the problem, the following has been explained. That is, when the alarm corresponding to the alarm set in the message of the information request is not stored in the primary database, the collection device does not return an abnormal response, but collects the time of the alarm previously stored in the database. If it is earlier than the earliest alarm occurrence time stored in the primary database of the device, all the alarm information stored in the primary database is transmitted, and the time of the alarm previously stored in the database is If the time between the earliest alarm occurrence time and the latest alarm occurrence time stored in the primary database of the collection device is later than the previous occurrence time stored in the primary database stored in the primary database The alarm information is transmitted, and the time of the last alarm stored in the database is used to update the latest alarm stored in the primary database of the collection device. Transmits information of the nearest alarm primary database stored in that occurrence time stored in the previous database of alarm collection device when is later than time.

If this is reviewed carefully, if the time of the alarm previously stored in the database is earlier than the time of occurrence of the latest alarm information stored in the primary database,
If the alarm information after the previous alarm time stored in the database is sent, and the alarm time stored in the previous database is later than the latest alarm information occurrence time stored in the primary database, This is equivalent to transmitting alarm information that is earlier than the alarm time stored in the previous database and that is closest to the alarm time stored in the previous database.

Therefore, in step S13, the alarm generation time (previous time) set in the message of the information request is
What is necessary is just to determine whether it is before or after the latest alarm information stored in the primary database.

If the alarm generation time (previous time) set in the information request message is earlier than the latest alarm information stored in the primary database (Yes), the process returns to step S9.

Thereafter, steps S4 to S11
Is repeated, and if it is determined that the alarm transfer has been completed, step S12 is performed, and the process ends. S14. If the alarm occurrence time (previous time) set in the information request message is later than the latest alarm information stored in the primary database (No), the alarm set in the information request message is set. Before the time (last time), the alarm information closest to the alarm time (last time) set in the message of the information request is transmitted, and step S10 is performed.
Then, the process from step S11 to step S9 is performed, and the process returns to step S10 again.

The alarm information that is earlier than the alarm time (last time) set in the information request message and closest to the alarm time (last time) set in the information request message is the primary database. Is the latest alarm information stored in the message. Since the final information is set in the message, it is determined in step S10 that it is not the final information, and the process returns to step S4 via step S11, and thereafter, returns to step S5. Thereafter, the processing from step S9 is performed. However, in this routine, since there is no alarm information to be transferred, when returning to step S10 again, it is determined that the alarm transfer has been completed, and the process ends after performing step S12.

By performing the above processing, it is not necessary to send an abnormal response from the collection device to the monitoring device, and it is not necessary for the maintenance person to adjust the status on the monitoring device side receiving the abnormal response. Therefore, it is possible to reduce the burden on the maintenance person, and when the alarm information corresponding to the alarm information set in the information request message is not stored in the primary database, the alarm stored in the primary database Even if the information makes one round of the primary database, the number of missing alarm information can be minimized.

In the above description, it is described that alarm information is transferred one by one from the collection device to the monitoring device. However, this is only for the sake of easy understanding.

That is, if the logging data portion of the response message has a capacity to store a plurality of pieces of alarm information, a plurality of pieces of alarm information can be sent by a single response message. in this case,
An empty area always occurs in the logging data section depending on the relationship between the capacity of the logging data section and the number of pieces of alarm information to be transmitted. Therefore, whether or not the transfer of the alarm information has been completed can be determined based on whether or not there is an empty area in the logging data section.

Therefore, the alarm transfer from the collection device to the monitoring device is not always performed one by one, and a plurality of pieces of alarm information may be carried in a single response message. In the above method, since the collection device determines the content to be responded to the information request of the monitoring device and transmits it, the number of missing alarm information alone can be minimized, and the reliability of the monitoring system is reduced. Be improved.

In addition, when an information request from the monitoring device is received, the collection device stops polling the monitored device to stop collecting the alarm information, and accumulates the alarm information during the period in the monitored device. Even if an alarm occurs in the monitored device during the alarm transfer, the alarm information is not immediately stored in the primary database of the collection device. As a result, even if the storage capacity of the primary database is full, the alarm information is not overwritten, so that the reliability of the monitoring system is improved.

Further, when the alarm information stored in the primary database becomes full in the capacity of the primary database, the collecting device stops polling the monitored device to stop collecting the alarm information, and the monitored device informs the monitored device during that time. By accumulating the alarm information, the information is not overwritten on the primary database, and the reliability of the monitoring system is further improved.

If it is determined in step S8 that the alarm information set in the message of the information request is stored in the primary database, the alarm information following the alarm information following the alarm information is transmitted from the collection device to the monitoring device. Forwarded to.

On the other hand, if the time of occurrence of the alarm set in the information request message in step S13 is earlier than the time of occurrence of the latest alarm information stored in the primary database, the alarm information following the alarm information following the alarm information is also used. Is transferred from the collection device to the monitoring device. Then, in step S13, if the alarm occurrence time set in the information request message is later than the latest alarm information occurrence time stored in the primary database, the alarm set in the information request message is output. The alarm information that is earlier than the time (last time) and that is closest to the alarm time (last time) set in the message of the information request is transferred.

Therefore, the above processing is performed after the time when the alarm time (previous time) set in the message of the information request is before the latest alarm information generation time stored in the primary database. Transfer the generated alarm information,
If the alarm time (previous time) set in the information request message is later than the latest alarm information generation time stored in the primary database, the alarm time set in the information request message ( This is equivalent to transferring alarm information that is earlier than the previous time) and is closest to the alarm time (last time) set in the message of the information request.

The above description has been made on the alarm transfer operation of the monitoring system of the present invention when the line between the collection device and the pre-processing device is normal. The alarm transfer operation at the time of occurrence will be described.

FIG. 7 shows the alarm transfer operation of the present invention (part 2).
FIG. 9 is a diagram illustrating an alarm transfer operation when the line between the collection device and the preprocessing device is once disconnected. Hereinafter, description will be made along the reference numerals in FIG.

S15. The line between the collecting device and the preprocessing device is disconnected. S16. Meanwhile, an alarm is generated in the monitored device. S17. A collection device collects the information of the alarm and stores it in a primary database.

S18. Thereafter, the line between the collection device and the preprocessing device is restored to normal. S19. The pre-processing device periodically polls the collection device, detects that a response to the polling once stops, and then returns, and the line between the collection device and the pre-processing device is restored. Make sure that you do. Then, the preprocessing device notifies the monitoring device that the line between the collection device and the preprocessing device has been restored.

Thereafter, the same processing as that of the above-described alarm transfer operation is performed. Therefore, although it is possible to omit the details of the processing, it is helpful to fully describe the processing in correspondence with the drawings, so that the above-described processing will be described in detail.

S4. The collection function unit reads the alarm number and the occurrence time of the latest alarm information received last time from the last database. S5. The collection function unit sets the read alarm number and the occurrence time in the message.

S6. The collection function unit sends the set message to the collection device via the preprocessing device, and requests information. S7. The collection device that has received the information request from the collection function unit searches for alarm information corresponding to the alarm number and the occurrence time set in the message of the information request.

S8. It is determined whether the alarm information corresponding to the alarm number and the occurrence time set in the message of the information request is stored in the primary database. S9. When the alarm information corresponding to the alarm number and the occurrence time set in the message of the information request is stored in the primary database (Yes), the alarm information next to the alarm information is set in the response message, The data is transmitted to the monitoring device via the preprocessing device.

Incidentally, the response message is composed of a header section and a logging data section for carrying alarm information. If there is alert information to be sent to the primary database,
The collection device transmits valid alarm information on the logging data portion, and when there is no more alarm information to be transmitted to the primary database, the collection device transmits the logging data portion empty. Therefore, the collection function unit can determine whether or not the transfer of the alarm information has been completed by checking the contents of the logging data unit.

S10. The collection function unit determines whether the transfer of the alarm information has been completed. S11. If the collection function unit determines that the transfer of the alarm information has not been completed (No), the received alarm information is stored in the storage database, and the content stored in the previous database is rewritten to the alarm information just received. Then, the process returns to step S4.

The collection function unit reads out the alarm information that the collection function unit has just written from the database last time in step S4. Thereafter, the processing proceeds as described above up to step S7.

In step S8 again, it is determined whether the alarm information corresponding to the alarm number and the occurrence time set in the message of the information request is stored in the primary database. In this case, since the alarm information read from the primary database and transmitted by the collection device is set in the information request message, steps S9 and S9 are performed.
The process proceeds with 10.

When it is determined that the alarm transfer has not been completed, steps S4 to S10 are repeated. Finally, after transmitting the latest alarm information stored in the primary database, the collection device transmits the response message with the logging data section empty. When the response message is received, the collection function unit determines in step S10 that the alarm transfer has been completed.

S12. If the collection function unit determines that the alarm transfer has been completed in step S10 (Yes),
Notify all the alarm information received to the generation processing unit. Hereinafter, the processes performed by the generation processing unit and the recovery processing unit are as described above.

S13. In step S8, when it is determined that the alarm information corresponding to the alarm number and the occurrence time set in the message of the information request is not stored in the primary database (No), the message is set to the message of the information request. The relationship between the occurrence time of the alarm (in the figure, this is expressed as the previous time) and the occurrence time of the alarm information stored in the primary database is determined.

Incidentally, in the section of the means for solving the problem, the following has been explained. That is, when the alarm corresponding to the alarm set in the message of the information request is not stored in the primary database, the collection device does not return an abnormal response, but collects the time of the alarm previously stored in the database. If it is earlier than the earliest alarm occurrence time stored in the primary database of the device, all the alarm information stored in the primary database is transmitted, and the time of the alarm previously stored in the database is If the time between the earliest alarm occurrence time and the latest alarm occurrence time stored in the primary database of the collection device is later than the previous occurrence time stored in the primary database stored in the primary database The alarm information is transmitted, and the time of the last alarm stored in the database is used to update the latest alarm stored in the primary database of the collection device. Transmits information of the nearest alarm primary database stored in that occurrence time stored in the previous database of alarm collection device when is later than time.

If this is reviewed carefully, if the time of the last alarm stored in the database is earlier than the time of occurrence of the latest alarm information stored in the primary database,
If the alarm information after the previous alarm time stored in the database is sent, and the alarm time stored in the previous database is later than the latest alarm information occurrence time stored in the primary database, This is equivalent to transmitting alarm information that is earlier than the alarm time stored in the previous database and that is closest to the alarm time stored in the previous database.

Therefore, in step S13, the alarm generation time (previous time) set in the information request message is
What is necessary is just to determine whether it is before or after the latest alarm information stored in the primary database.

If the alarm generation time (previous time) set in the information request message is earlier than the latest alarm information stored in the primary database (Yes), the process returns to step S9.

Thereafter, steps S4 to S11
Is repeated, and if it is determined that the alarm transfer has been completed, step S12 is performed, and the process ends. S14. If the alarm occurrence time (previous time) set in the information request message is later than the latest alarm information stored in the primary database (No), the alarm set in the information request message is set. Before the time (last time), the alarm information closest to the alarm time (last time) set in the message of the information request is transmitted, and step S10 is performed.
Then, the process from step S11 to step S9 is performed, and the process returns to step S10 again.

The alarm information that is earlier than the alarm time (last time) set in the information request message and closest to the alarm time (last time) set in the information request message is the primary database. Since the latest alarm information stored in step S10 is returned to step S10, it is determined that the alarm transfer has been completed, and the process ends after performing step S12.

By performing the above-described alarm transfer operation,
When the line between the collection device and the pre-processing device is responded to the polling after the line between the collection device and the pre-processing device is restored, alarm information while the line between the collection device and the pre-processing device is disconnected can be sent to the monitoring device.

In the prior art, when a state change notification generated by the collection device collecting and issuing an alarm triggers the alarm information while the line between the collection device and the pre-processing device is disconnected to the monitoring device, the information is sent to the monitoring device. If the line between the collection device and the pre-processing device could not transfer the alarm information to the monitoring device while the line between the collection device and the preprocessing device was disconnected unless a new alarm was generated even if the line between the processing devices was restored, the polling period If is set properly, the alarm transfer after the restoration of the line between the collecting device and the preprocessing device can be performed early.

Further, by performing the above processing,
It is no longer necessary to send an abnormal response from the collection device to the monitoring device, and to have the maintenance person adjust the status on the monitoring device side receiving the abnormal response. Therefore, it is possible to reduce the burden on the maintenance person, and furthermore, when the alarm information corresponding to the alarm information set in the information request message is not stored in the primary database, the alarm information is stored in the primary database. Even if alarm information makes one round of the primary database, the number of missing alarm information can be minimized.

In addition, when an information request from the monitoring device is received, the collection device stops polling the monitored device, stops collecting alarm information, and stores the alarm information during the period in the monitored device. , The reliability of the monitoring system is improved.

Further, when the alarm information stored in the primary database becomes full in the capacity of the primary database, the collection device stops polling the monitored device to stop collecting the alarm information, and the monitored device informs the monitored device during that time. By accumulating the alarm information, the information is not overwritten on the primary database, and the reliability of the monitoring system is further improved.

If it is determined in step S8 that the alarm information set in the message of the information request is stored in the primary database, the alarm information subsequent to the alarm information following the alarm information is sent from the collection device to the monitoring device. Forwarded to.

On the other hand, even if the time of occurrence of the alarm set in the information request message in step S13 is earlier than the time of occurrence of the latest alarm information stored in the primary database, the alarm information following the alarm information following the alarm information is also used. Is transferred from the collection device to the monitoring device. Then, in step S13, if the alarm occurrence time set in the information request message is later than the latest alarm information occurrence time stored in the primary database, the alarm set in the information request message is output. The alarm information that is earlier than the time (last time) and that is closest to the alarm time (last time) set in the message of the information request is transferred.

Therefore, the above processing is performed when the alarm time (previous time) set in the information request message is earlier than the latest alarm information occurrence time stored in the primary database. If the alarm information generated later is transferred, and the alarm time (previous time) set in the information request message is later than the latest alarm information occurrence time stored in the primary database, the information request message is sent. This is equivalent to transferring the alarm information that is earlier than the alarm time (previous time) set in the information request and that is closest to the alarm time (previous time) set in the message of the information request.

[0126]

As described in detail above, according to the present invention, it is possible to collect all alarms generated while the monitoring device is stopped,
In addition, it is possible to realize a monitoring method capable of early collecting an alarm generated while the line between the collecting device and the preprocessing device is disconnected, thereby improving the reliability of the monitoring system and reducing the burden on maintenance personnel. Can contribute to

[Brief description of the drawings]

FIG. 1 is a configuration of a general monitoring system.

FIG. 2 is an alarm transfer operation of the present invention (part 1).

FIG. 3 is an alarm transfer operation of the present invention (part 2).

FIG. 4 is an alarm transfer operation of the present invention (part 3).

FIG. 5 is an alarm transfer when the line between the collecting device and the preprocessing device is disconnected.

FIG. 6 shows details of the alarm transfer operation of the present invention (part 1).

FIG. 7 shows details of the alarm transfer operation of the present invention (part 2).

FIG. 8 shows the operation of the conventional monitoring system (part 1).

FIG. 9 shows the operation of the conventional monitoring system (part 2).

FIG. 10: Problems of a conventional monitoring system (part 1)

FIG. 11: Problems of the conventional monitoring system (part 1)

[Explanation of symbols]

 1-1 Monitored device 1-2 Monitored device 1-3 Monitored device 1-4 Monitored device A 1-5 Monitored device B 2 Collection device 3 Preprocessing device 4 Monitoring device 21 Primary database 41 Collection function unit 42 Previous database 43 Accumulation function unit 44 Accumulation database 45 Generation processing unit 46 Forced recovery database 47 Generation alarm database 48 Recovery processing unit 49 Recovery alarm database

Claims (4)

[Claims] A monitoring device that receives a status change notification from a collection device that has collected alarm information via a preprocessing device sets the latest alarm information stored in the monitoring device in a message and performs preprocessing. In the monitoring method of making an information request to the collection device via the device, the generation time of the alarm set in the information request message is the generation of the latest alarm information stored in the database provided in the collection device. If the time is before the time, the collection device transmits to the monitoring device alarm information after the alarm generation time set in the information request message to the monitoring device, and generates the alarm set in the information request message. If the time is later than the occurrence time of the latest alarm information stored in the database provided in the collection device, the collection device is earlier than the occurrence time of the alarm set in the information request message and Recent police Monitoring scheme and transmits the information to the monitoring device. 2. The monitoring method according to claim 1, wherein, when receiving an information request from the monitoring device, the collection device stops collecting alarm information. 3. The monitoring method according to claim 1, wherein when the alarm information stored in the database provided in the collecting device satisfies the capacity of the database, the collecting device collects the alarm information. A monitoring method characterized by stopping. 4. A monitoring device that receives a status change notification from a collection device that has collected alarm information via a preprocessing device, sets the latest alarm information stored in the monitoring device in a message, and performs preprocessing. In the monitoring method of making an information request to the collection device via the device, when detecting that the line between the collection device and the preprocessing device has been restored, the preprocessing device transmits a line restoration notification to the monitoring device, A monitoring method, wherein the monitoring device that has received the recovery notification makes an information request to the collection device via the preprocessing device.