JP3472683B2 - Alarm device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alarm device for notifying an operator of an alarm condition of a plant.

[0002]

2. Description of the Related Art In various plants such as a power plant and a steel plant, various process data such as pressure and temperature are input from sensors of each part of the plant, and a display device is displayed when the process data deviates from a limit value. The operator is provided with an alarm via a voice output device. The operator comprehensively evaluates the plant status provided by the alarm device, operates the plant safely and efficiently, and the role of the alarm device that notifies the occurrence of plant abnormality as the plant scale increases. Has become important year by year.

FIG. 20 is a block diagram showing an example of this type of alarm device. In the alarm device 100, an alarm determination unit 2, an alarm definition database 3, an alarm state database 4, an output unit 5, and an annunciator output unit 6 are provided. And a message output unit 7.

Process data is fetched from the plant via the process data input device 1, and the alarm determination section 2 refers to the alarm definition database 3 at a predetermined timing to determine the occurrence of an alarm for the fetched process data. .
When the alarm determination unit 2 determines that an alarm has occurred, the alarm state is stored in the alarm state database 4, and the alarm device determines that the alarm state is normal, and the alarm state database 4
For input points that are in the alarm state, the alarm state is changed to the normal state.

The output unit 5 refers to the alarm state database 4 for each notification from the alarm determination unit 2 to notify the annunciator output unit 6 to turn on the corresponding annunciator 8 at the time of a new alarm, and to display the display device. 9 or the message is output from the printer 10 to the message output unit 7.

[0006]

A conventional alarm device 100.
Then, the alarm status at the time the alarm was issued or the failure status
Can be recognized, but to the plant operation due to the alarm / failure
It was not possible to accurately judge the effect of.

[0007]

[0008]

Further, in the conventional alarm device, if a highly important alarm is issued while the plant condition is being monitored by the display device,
In some cases, you may be forced to switch to a related screen for alarms of high importance.If you want to continue displaying the original display screen, check the contents of the automatically switched monitoring screen and then The operator manually returned to the original screen.

[0010]

The present invention has been made in order to solve the above-mentioned problems. By notifying an operator of an abnormal state of a plant by an appropriate means, the operator can be accurately monitored and the load on the operator can be reduced. It is also an object of the present invention to provide an alarm device that improves plant safety.

[0012]

Means for Solving the Problems of claims 1 invention, Pla
Monitor the alarm status and notify the operator of the occurrence of an alarm.
In the alarm device, predetermined according to each operating state of the plant
Driving status judgment that outputs the driving stage based on the judgment conditions
Part and influence that defines the input point and the degree of influence for each operation stage
Refer to the degree definition database and impact degree definition database
The driving stage that is judged and output by the driving condition judging unit
The impact level determination unit that notifies the input point and impact level according to the
When a report is generated, the impact determination unit requests the impact determination unit to
Display of the degree of influence on the input point of the
To create an impact degree display section that creates and outputs the data
It is the one. This means that the
The driving stage is determined by the
The input point and the degree of influence according to the page are determined. And the police
Impact of input points for alarm generation when information is generated
Is determined and the display data including the degree of influence is displayed outside.
I will be forced. As a result, an alarm can be generated depending on the condition of the plant.
The degree of influence caused by the occurrence is accurately determined, and
Data is notified. Therefore, as in the past,
The influence level is determined uniformly regardless of the
The evil of knowing is eliminated.

[0013]

[0014]

[0015]

According to a second aspect of the present invention, in an alarm device for monitoring a plant condition and notifying an operator of the occurrence of an alarm, a related screen definition database for defining an alarm input point and a related screen number when an alarm is notified. Referring to the trend condition definition database that defines the trend condition corresponding to the trend screen number and the train is the plant state
The trend data creation unit that makes a trend display data corresponding to the alarm input point and makes a display request when it is determined that the condition is satisfied, and a display request made by this trend data creation unit. when the there and there is a display specification of continuation of the screen being displayed on the display device from the outside, so as to provide an output determining unit that determines the trend display data to the output to another output means and said display device It is the one. By this means, the trend screen number associated with the alarm generation input point is extracted and the trend display data is created. Then, when the external display continuation is designated, it is determined to output to another output means. As a result, when the current monitor screen is continued by an external designation, the output is output to another output means. Therefore, as in the conventional case, the currently displayed screen is forcibly switched to another screen, and the labor for the operator to return to the original screen is reduced.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of an alarm device showing a first embodiment of the present invention.

In FIG. 1, the same reference numerals as those in FIG. 20 showing the conventional example indicate the same or corresponding portions, and in the first embodiment of FIG. 1, the output judging section 11, the factor / output destination management database 12 and the factors. It is characterized in that a decoding section 13 and an operator designating section 14 are provided so that the cause of occurrence of an annunciator can be identified and output to the outside.

Here, the output judging unit 11 notifies the annunciator 8 when a new alarm is generated, and stores an index for specifying the alarm generation in the corresponding alarm generation factor of the factor / output destination management database 12. Is. The factor / output destination management database 12 defines the annunciator 8 and the alarm generation factor, which is the point at which the alarm is generated, in association with each other, and records an index for specifying the generation of a new alarm for each alarm generation factor. is there.

The factor decoding unit 13 refers to the factor / output destination management database 12 in response to the notification to the annunciator 8, identifies the alarm generation factor, and outputs it to the outside. The operator designating section 14 requests the factor decoding section 13 to display an alarm generation factor when necessary and causes the display device 9 to display it.

First, the alarm determination unit 2 determines whether or not the input point data of each part of the plant input from the process data input device 1 and the state defining the alarm state in the alarm definition database 3 match. In this determination, if they match, it is determined that an alarm has occurred, and the alarm state is stored in the alarm state database 4. Furthermore, the alarm determination unit 2 notifies the output determination unit 11. Upon receiving this notification, the output determination unit 11 compares the alarm state database 4 at the time of the previous notification with the content of this time. As a result, the input point at which the alarm is newly generated, that is, the cause of the annunciator 8 is searched, the alarm counter of the factor / output destination management database is counted, and the annunciator number corresponding to the alarmed input point is searched. After taking out and outputting the annunciator 8, the factor deciphering unit 13 is provided so that the display device 9 can display the alarm-causing factor generated by the annunciator 8.
To start.

The activated factor deciphering unit 13 compares the alarm counter in the factor / output destination management database 12 at the time of the previous activation with the contents of this time, and issues an alarm when the alarm counter increases. Is generated, and the cause of annunciator generation is displayed on the display device 9 for each annunciator.

The output judgment unit 11 notified of the alarm occurrence notifies the operator of the annunciator generation factor by using the factor / output destination management database 12 to perform the annunciator output and the factor notification to the factor decoding unit 13. Specific means will be described with reference to FIGS. 2 to 4.

First, the output judgment unit 11 which has been notified of the alarm generation by the alarm judgment unit 2 executes the processing shown in FIG. 2, and the contents of the alarm state database at the previous startup and the alarm state at the time of this notification The contents of the database 4 are compared with each other, and an input point that newly becomes an alarm is identified (S1, S2). For example, assume that the input point is the following point.

· AA000 ・ CA279 ・ AD000

The output judging section 11 counts up the alarm counter corresponding to the input point in the factor / output destination management database 12 of the configuration shown in FIG. 3 when an alarm is issued (S4). On the other hand, when returning to the normal state, the countdown is performed (S5 to S7). At the time of counting up, the annunciator designated by the output destination annunciator is turned on to notify the operator that an alarm is issued, and the factor decoding unit 13 is notified of the output destination annunciator number (S8).

For example, as shown in FIG. 3, if the input point is a point at which an alarm state is set, the annunciator 1,
Also, the annunciator 2 is turned on, and the FA 113 and AA012, which are the factors causing the annunciator 3, are not turned on because they are not in the alarm state.

Further, the factor decoding unit 13 which has been notified of the annunciator number executes the process shown in FIG. 4 and refers to the factor / output destination management database 12 shown in FIG. Compared with the counter, the one with the counter of 1 and the alarm point which is the generation factor are extracted (S
10, S11).

As a result, A is given to the annunciator 1.
A000, CA279, AD000, Annunciator 2
On the other hand, AA000 is notified to the operator via the display device 9 as a factor causing the annunciator.

When the operator is designated by the operator designating unit 14, the factor decoding unit 13 refers to the factor / output destination management database 12 in response to a request, and causes all the annunciators for the annunciator 8 to occur, or The cause of the annunciator 8 that is issuing an alarm to the annunciator 8 is output to the display device 6 (S12, S13).

In the first embodiment, when an alarm is generated, it is stored as an index so that the alarm occurrence corresponding to the alarm occurrence factor of the factor / output destination management database can be identified, and the factor / output destination management database is referred to. Then, each alarm generation factor is specified and output to the outside. As a result, when an annunciator occurs, the cause of the annunciator is immediately known. Therefore, as in the conventional case, when an alarm is output to one annunciator with respect to a plurality of alarms, or when an alarm is output to the annunciator based on the result of the logical product of the plurality of alarms, the alarm cause is identified. It is possible to eliminate the difficulty.

FIG. 5 is a block diagram of an alarm device showing a second embodiment of the present invention.

In FIG. 5, the same reference numerals as those in FIG. 20 showing the conventional example indicate the same or corresponding portions, and in the second embodiment of FIG. 5, a warning message output unit 21, an importance degree determination unit 22, and a variable An importance database 23, a fixed importance database 24, a variable importance determination unit 25, an operation stage / importance database 26, an operation state determination unit 27, and an operation stage determination database 28 are provided to generate an alarm according to the state of the plant. The feature is that the operator is notified of the degree of importance of occurrence.

Here, the importance determining section 22 refers to the variable importance database 23 and the fixed importance database 24 when an alarm is issued to determine the importance regarding the input point of the alarm occurrence, and the display device 9 or print. The data is output to the device 10. The variable importance level judgment unit 25 refers to the driving stage / importance level database 26, and the driving state judgment unit 2
The variable importance level database 23 stores the input points and the importance levels corresponding to the driving stages judged and output according to 7. The operating state determination unit 27 determines and outputs the operating stage under a predetermined determination condition according to each operating state of the plant.

First, the operating condition judging section 27 executes the process shown in FIG. 6, and at the judgment timing, refers to the relationship between the plant condition and the operating stage defined in the operating stage judging database 28 (S21, S22).
For example, in the driving stage judgment database 28, FIG.
As shown in, the condition of the state quantity is described as follows for each operation stage.

[0037] Operation stage 1 Current power generation> 0 MW Operation stage 2 Current power generation> 100MW Operation stage 3 Current power generation> 150 MW

As a result, when the current power generation amount is 120 MW, the driving condition judging unit 27 judges that the driving condition judging unit 27 is currently in the driving stage 2 (S2).
3).

Such a judgment is periodically made by the driving condition judging unit 27, and when the driving stage is changed, the variable importance judging unit 25 is notified that the driving stage has been changed (S24).

When notified that the driving stage has changed, the variable importance level judgment section 25 performs the processing shown in FIG.
Reference is made to the driving stage / importance degree database 26 in which the degree of warning importance is defined for each driving stage (S31, S3).
2). The importance of each warning regarding the current driving stage,
The variable importance database is stored (S33). For example, the driving stage / importance database 26 is shown in FIG.
It is assumed that it is defined as shown in (A).

This is summarized as shown in FIG. 9 (B), and if the current driving stage is 2, the respective alarms are as follows:

AA000: Moderate AA003: Moderate AD000: important Becomes

On the other hand, when the input point data of each part of the plant coincides with the state defined as the alarm state in the alarm definition database 3, the alarm determination unit 2 determines that a new alarm has been generated and outputs the alarm state. The alarm state is stored in the database 4 and the alarm message output unit 21 is notified. The alarm message output unit 21 retrieves the input point information on the newly generated alarm from the alarm state database 4 and inquires of the importance degree determination unit 22 about the importance degree of the newly generated alarm.

Importance determining unit 2 inquired of importance
2 executes the processing shown in FIG. 10, and compares the importance of each alarm set in the fixed importance database 24 and the variable importance database 23 (S41, S42, S4).
3). Then, the one with the higher importance is set as the alarm importance at that time and the alarm message output unit 21 is notified (S4).
4).

Based on the alarm importance determined in this way,
The alarm message output unit 21 groups the alarms according to the importance of the alarm and displays the alarm status on the display device 9 or the printing device 10.
Output to.

As described above, according to the second embodiment, the driving stage is judged at a predetermined judgment timing, and the input point and the importance corresponding to the judged driving stage are stored in the importance database. Then, when an alarm is issued, the importance database is referred to for an input point regarding the occurrence of the alarm, the importance is determined, and an alarm message including the importance is issued. As a result, the level of importance of generating an alarm according to the state of the plant is accurately determined, and the operator is accurately notified. Therefore, it is possible to eliminate the disadvantage that the importance is uniformly determined and the incorrect importance is notified regardless of the state of the plant as in the related art.

FIG. 11 is a block diagram of an alarm device showing a third embodiment of the present invention.

In FIG. 11, the same reference numerals as those in FIG. 20 showing the conventional example indicate the same or corresponding portions, and in the third embodiment of FIG. 11, the operation state determination unit 27, the operation stage determination database 28, and the degree of influence. A feature is that a determination unit 31, an impact definition database 32, and an impact display unit 33 are provided to notify the operator of the impact regarding the input point of the alarm generation according to the state of the plant. There is.

Here, the operating state determination unit 27 determines and outputs the operating stage under a predetermined determination condition according to each operating state of the plant. The degree-of-impact determination unit 31 refers to the degree-of-impact definition database 32 and notifies the degree of influence of the input point according to the driving stage determined and output by the driving-state determination unit 27.

In FIG. 11, the operating state determination unit 27 refers to the operating stage determination database 28 to determine the operating stage, and each time the operating stage changes, the influence determining unit 31 is notified of the current operating stage.

On the other hand, when it is notified that the driving stage has changed, the influence degree judging unit 31 performs the processing shown in FIG. 12, and the alarm state database for the input point that is currently in the alarm state or the obstacle. 4 is referred to (S5
1, S52).

For example, the current driving state is the driving stage 1
Therefore, it is assumed that the driving state determination unit 27 determines that the driving is proceeding toward the driving stage 2.

When a change in the driving condition is received from the driving condition judging unit 27, the influence judging unit 31 extracts the input point in the alarm / failure state from the warning condition database 4 and extracts the stage from the influence definition database 32. 1 and the input points used in stage 2 are compared (S5
3).

Here, it is assumed that the influence definition database 32 defines the influence for each input point as shown in FIG.

For example, when the input point AA000 is an alarm during the driving of the driving stage 1 toward the driving stage 2, the influence degree determining unit 31 instructs the influence degree displaying unit 33 to perform the following operation. Notice.

In the case of <Influence at Operation Stage 1> ・ The transition condition to the operation stage 2 is not satisfied ・ No automatic operation ・ Boiler overheating due to small pump flow rate

In the case of <Influence at Operation Stage 2> ・ No progress

In this way, the operator can enter the input point AA
Let 000 recognize the degree of influence caused by the alarm.

When the influence degree of the corresponding input point is determined in this way, the influence degree is notified to the influence degree display section 33 (S54, S55). The above-mentioned processing is executed by the influence determination unit 31 even when there is a request from the influence display unit 33 (S56, S52 to S55).

As described above, according to the third embodiment, the driving stage is judged at a predetermined judgment timing, and the input point and the influence degree corresponding to the judged driving stage are judged.
Then, when an alarm is issued, the degree of influence is determined for an input point relating to the generation of the alarm, and display data including the degree of influence is displayed and output to the outside. As a result, the degree of influence caused by the generation of the alarm according to the state of the plant is accurately determined, and the operator is accurately notified. Therefore, it is possible to eliminate the adverse effect that the influence degree is uniformly determined and the incorrect influence degree is notified regardless of the state of the plant as in the conventional case.

FIG. 14 is a block diagram of an alarm device showing a fourth embodiment of the present invention.

In FIG. 14, the same reference numerals as those in FIG. 20 showing the conventional example indicate the same or corresponding portions, and in the fourth embodiment of FIG. 14, the display data creation unit 41, the related screen definition database 42 and the output judgment. Part 43 and monitoring continuation designating part 4
5 and a switching unit 47 are provided so that when the operator designates to continue the display, the output is made to the hard copy device 46.

Here, the display data creation unit 41 extracts the related screen number corresponding to the alarm input point by referring to the related screen definition database 42 which defines the input point and the related screen number when the alarm occurrence notification is given. It creates display data and makes a display request. The monitoring continuation designating unit 45 notifies the output judging unit 43 of whether or not there is a designation to continue the currently displayed screen. The output determination unit 43 switches the switching unit 47 to the side 47a of the hard copy device 46 when there is a continuation designation from the monitoring continuation designation unit 45 and a display request from the display data creation unit 41.

First, by using the input data from each part of the plant input through the process data input device 1 and the alarm definition database 3 defining the alarm states of the individual input points, The alarm state is determined and stored in the alarm state database 4, and the display data creating unit 41 is notified of the alarm occurrence.

Upon receiving the notification from the alarm determination unit 2, the display data creation unit 41 performs the process shown in FIG. 5 and refers to the related screen definition database 42 to search for a related screen corresponding to the newly generated alarm. (S61, S62).

For example, assuming that the input point AA000 is newly in the alarm state and the screen display relating to the input point AA000 is designated as the screen number 100 in the related screen definition database, the display device 9 is associated with the alarm. In order to forcibly display the screen, display data relating to the screen number 100 is created and a display request is made to the output judging section 43 (S63).

On the other hand, when the output judging section 43 executes the process shown in FIG. 15 and receives the display request from the display data creating section 41, the display data created by the display data creating section 41, that is, the screen It is determined whether the display screen of number 100 should be automatically displayed on the display device 9 (S7).
1). The monitoring continuation designating unit 45 inquires whether or not the operator has designated to continue monitoring other currently displayed screens (S72). Based on this result, the output destination of the display screen of screen number 100 is switched by the switching unit 47 as follows (S73, S74).

[0068] With continuous monitoring designation: Hard copy device (S73) No monitoring continuation designation: Display device (S74)

As a result, when the operator specifies to continue monitoring the currently displayed screen, the screen monitored by the operator is more important even if an important alarm that requires screen switching occurs. Since it may be a monitoring item, the screen change to the related screen is not forced,
It is output to the hard copy device 46.

As described above, according to the fourth embodiment, the relevant screen number related to the input point of alarm generation is extracted and the display data is created. Then, when there is an instruction to continue the display from the outside, it is determined to output to another output means. As a result, when the current monitoring screen is specified to be continued from the outside, it is output to another output means. Therefore, as in the conventional case, the currently displayed screen is forcibly switched, and the operator's time to return to the original screen is reduced.

FIG. 17 is a block diagram of an alarm device showing a fifth embodiment of the present invention.

In FIG. 17, the same reference numerals as those in FIG. 20 showing the conventional example indicate the same or corresponding portions, and in the fifth embodiment of FIG. 17, the related screen definition database 42, the output judgment unit 43, and the monitoring continuation designation. A unit 45, a switching unit 47, a trend condition definition database 51, a hard copy output cycle database 52, and a trend data creation unit 54 are provided so that the trend display data is output to the hard copy device 46 when the operator designates to continue the display. It has a feature in the point.

Here, the trend data creation unit 54, when an alarm occurrence notification is received, the related screen definition database 42 which defines the input point and the related screen number, and the trend condition (tray).
And a trend condition definition database 51 for defining trend start conditions and trend end conditions) , the trend screen number corresponding to the alarm input point is extracted to create trend display data, and a display request is output. The output determination unit 43 switches to the side 47b of the hard copy device 46 by the switching unit 47 when there is a display request from the trend data creation unit 54 and the operator designates to continue the screen currently displayed on the display device 9. To judge.

The input data from each part of the plant input through the process data input device 1 and the alarm definition database 3 defining the alarm state of each input point are referred to, and the alarm determination unit 2 issues an alarm state for each input point. Is determined,
The alarm is stored in the alarm state database 4, and the trend data creation unit 54 is notified of the alarm occurrence.

When the occurrence of an alarm is notified, the trend data creation unit 54 determines whether there is a screen associated with the newly entered alarm state related screen definition database 4 or not.
See 2. With this, there is a related screen, and
When the trend start condition defined in the trend condition definition database 51 matches the plant state, the trend display data is created and the output determination unit 43 is notified of the trend data display request.

Here, the flow of the trend data creation processing of the trend data creation unit 54 notified of the alarm generation and the flow up to the notification to the output determination unit 43 will be described with a specific example.

Upon receiving the notification from the alarm determination unit 2, the trend data creation unit 54 performs the processing shown in FIG. 18 and refers to the related screen definition database 42 (S81, S8).
2) As a result, the related screen corresponding to the newly generated alarm is searched. For example, assuming that the input point AA000 is newly in the alarm state, the related screen definition database 4
If the screen display of the input point AA000 is designated as screen number 100 of the trend graph in 2, the trend condition, the data collection cycle, and the trend cycle corresponding to the screen number 100 are retrieved from the trend condition definition database 51 (S84). . In this case, as shown in FIG.
The lend condition database 51 contains trend conditions (tray
Start condition, trend end condition) , data collection cycle,
Assume that the trend period is defined as shown in FIG.

When set as described above, while the trend data creating section 54 collects the input data of the input point AA001 from the plant database 48,
For example, if the input data of AA001 is 100 ° C., the trend start condition is satisfied, the output determination unit 43 is activated, and the data related to the input points defined by the collection input points are data. The trend display data is created by sampling from the plant database 48 at the cycle indicated by the collection cycle (S8).
5). Further, when the trend screen number is not extracted in the related screen definition database 42, display data is created (S86).

Next, when the monitoring continuation designating unit 45 designates the monitoring continuation, the activated output judging unit 43 retrieves the hardcopy output period corresponding to the screen number from the hardcopy output period database 52. When the relative time from the time of activation from the trend data creation unit 54 is an integer multiple of the cycle taken out, it is determined that it is the hard copy output timing, and the trend display data is sent from the switching unit 47 to the hard copy device 46. Output to. On the other hand, when the continuous monitoring is not designated, the switching unit 47 periodically outputs the trend display data to the display device 9.

As described above, according to the fifth embodiment, the trend screen number associated with the alarm generation input point is extracted and the trend display data is created. Then, when the external display continuation is designated, it is determined to output to another output means. As a result, when the current monitor screen is continued by an external designation, the output is output to another output means.
Therefore, as in the conventional case, the currently displayed screen is forcibly switched to another screen, and the labor for the operator to return to the original screen is reduced.

[0081]

As described above, according to the first aspect of the invention, the input point and the influence degree according to the driving stage are determined.
Therefore, it is caused by the occurrence of an alarm according to the plant condition.
The degree of influence is accurately determined and the operator can be notified accurately.
The same as before, regardless of the plant condition
Eliminates the adverse effect of determining the degree and reporting inaccurate impact
it can.

[0082]

[0083]

[0084]

According to the second aspect of the present invention, when there is an instruction from the outside to continue the current display, the trend display data when the alarm is issued is output to another output means. , The trend display data at the time of alarm generation can be forcibly switched from the currently displayed screen, and the operator's trouble of returning to the original screen can be reduced.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of an alarm device according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing a process of an output determination unit included in the alarm device of FIG.

FIG. 3 is a configuration diagram showing an example of a factor / output destination management database provided in the alarm device of FIG.

FIG. 4 is a flowchart showing a process of a factor decoding unit provided in the alarm device of FIG.

FIG. 5 is a block configuration diagram of an alarm device according to a second embodiment of the present invention.

FIG. 6 is a flowchart showing a process of an operating state determination unit included in the alarm device of FIG.

7 is a configuration diagram showing an example of a driving stage determination database provided in the alarm device of FIG.

FIG. 8 is a flowchart showing a process of a variable importance level judgment unit included in the alarm device of FIG.

9A is a configuration diagram showing an operation stage / importance level database provided in the alarm device of FIG. 5. FIG. (B)
[Fig. 3] is an explanatory diagram showing a specific example of (A).

10 is a flowchart showing a process of an importance degree determination unit provided in the alarm device of FIG.

FIG. 11 is a block configuration diagram of an alarm device according to a third embodiment of the present invention.

12 is a flowchart showing a process of an influence degree determination unit provided in the alarm device of FIG.

13 is a block diagram showing an example of an impact definition database provided in the alarm device of FIG.

FIG. 14 is a block configuration diagram of an alarm device showing a fourth embodiment of the present invention.

15 is a flowchart showing a processing procedure of a display data creation unit included in the alarm device of FIG.

16 is a flowchart showing a process of an output determination unit included in the alarm device of FIG.

FIG. 17 is a block configuration diagram of an alarm device showing a fifth embodiment of the present invention.

FIG. 18 is a flowchart showing processing of a trend data creation unit provided in the alarm device of FIG.

19 is a configuration diagram showing an example of a trend condition definition database provided in the alarm device of FIG.

FIG. 20 is a block diagram showing a conventional alarm device.

[Explanation of symbols]

1 Process data input device 2 Alarm judgment section 3 alarm definition database 4 Alarm status database 8 Annunciator 9 Display device 10 Printer 11 Output judgment section 12 factor / output destination management database 13 Factor Decoding Section 14 Operator designation section 21 Warning message output section 22 Importance determination section 23 Variable Importance Database 24 Fixed importance database 25 Variable Importance Determining Section 26 Driving Stage / Importance Database 27 Operation status determination unit 28 Operation Stage Judgment Database 31 Impact degree determination unit 32 Impact definition database 33 Impact level display 41 Display data creation section 42 Related screen definition database 43 Output judgment section 45 Monitoring continuation designation section 46 Hard copy equipment 48 plant database 51 Trend Condition Definition Database 52 Hardcopy output cycle database 54 Trend data creation section

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ identification code FI G08B 25/00 G08B 25/00 510M 29/18 29/18 B (58) Fields investigated (Int.Cl. ⁷ , DB name) G05B 23/00-23/02 G08B 23/00-31/00

Claims (2)

(57) [Claims] 1. An alarm device for monitoring a plant state and notifying an operator of the occurrence of an alarm, an operating state determining section for determining and outputting an operating stage under a predetermined determination condition according to each operating state of the plant, and an operating stage. An impact degree definition database that defines the input point and the impact degree for each, and an impact degree that notifies the input point and the impact degree according to the driving stage determined and output by the operating state determination unit by referring to the impact degree definition database A determination unit; and an impact display unit that requests the influence determination unit when an alarm is generated and creates and outputs display data of the impact related to the input point of the alarm generation obtained by the impact determination unit. An alarm device characterized in that 2. An alarm device for monitoring the plant status and notifying an operator of the occurrence of an alarm. When an alarm is notified, an alarm input point and a related screen number are defined in a related screen definition database and a trend screen number. Referring to the trend condition definition database that defines a corresponding trend condition, the plant state the trend conditions
Determines satisfy matter, and trend data generation unit to display request to create a trend display data corresponding to the alarm input point when it is determined that satisfied, there is a display request by the trend data generation unit and the outer < when there is br /> specify the display duration of the currently displayed screen on the display device from the unit, to an output judging section for judging the trend display data to the output to another output means and said display device An alarm device characterized by.