JP3243022B2 - Cause diagnosis device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cause diagnosis apparatus for diagnosing the cause of an abnormality in a plant and displaying the result of the diagnosis.

[0002]

2. Description of the Related Art In recent years, various industrial plants are becoming more and more complicated with various control devices and the like in order to improve efficiency and operation reliability, and the number of operators involved in the operation tends to decrease. Under these circumstances, when an abnormality occurs in the plant, the signs of the abnormality are captured, the cause of the abnormality is diagnosed, and the diagnosis result is displayed, so that the operator can perform an appropriate response operation. Diagnosis device for the cause of has been made.

FIG. 12 shows a configuration of a conventional cause diagnosis apparatus. The cause diagnosis apparatus 1 is roughly composed of a cause diagnosis processing means 3 and a diagnosis result display processing means 5. In the cause diagnosis processing means 3, the event occurrence detection means 7 constantly monitors the state of the plant 9, and when the occurrence of any diagnostic target event is detected, the plant data collected from the plant 9 at that time is used as the diagnostic data. Hand over to diagnostic means 11,
Notifies that an event has occurred. The cause diagnosing means 11 performs a diagnosis based on the received diagnostic data and the diagnostic knowledge base 13 owned by the diagnostic means, saves the diagnostic result in a diagnostic result file 15, and reports that one diagnosis has been completed. Notify 17. The diagnosis result storage means 17 registers the diagnosis results stored in the diagnosis result file 15 in the diagnosis result storage file 19 of the diagnosis result display processing means 5,
The operator is notified of the occurrence of a new diagnosis result via a notification means 21 such as a chime or a notification lamp. Note that the diagnosis result storage file 19 stores all the diagnosis results obtained so far.

The diagnostic result display processing means 5 is composed of diagnostic information display data creating means 23, a notifying means 21, and a diagnostic display / input means 25, and the operator is notified by the notifying means 21 that a new diagnostic result has been generated. When the information is recognized and the display request of the information regarding the desired diagnosis result is instructed through the diagnostic display / input means 25, the diagnostic information display data creating means 2
3 extracts information on a desired diagnostic result from the diagnostic result storage file 19 and displays it on the diagnostic display / input means 25. As a result, the operator can check information on the desired diagnosis result.

On the other hand, a plant monitoring device 27 for providing monitoring information of the plant 9 collects plant data from the plant 9 and stores the monitoring data in a monitoring data file 29. A monitoring display / input unit 33 for performing the monitoring data file 2 in response to a display request from the monitoring display / input unit 33
9 and monitoring information display data creating means 35 for creating display data of monitoring information by extracting desired data from the data.

As described above, the conventional cause diagnosis apparatus 1 is realized as an independent apparatus by the cause diagnosis processing means 3 and the diagnosis result display processing means 5, and is different from the plant monitoring apparatus 27 for providing plant monitoring information. It was installed independently. Therefore, there is a trouble that the operator has to confirm the information on the diagnosis result and the information on the plant monitoring using the respective display / input means 25 and 33.

Further, even if an event occurs and a diagnostic result is derived, the latest diagnostic result is not automatically displayed on the diagnostic display / input means 25, but the notification means 21 is provided.
Only inform the operator that a new diagnostic result has been generated. For this reason, the operator who has received the notification needs to input the information about the diagnostic result to be investigated from the diagnostic display / input unit 25 to the device to confirm the contents of the diagnostic result. When a diagnostic event occurs, there is a problem that information on the diagnostic result cannot be obtained promptly.

In the conventional cause diagnosis apparatus, the event occurrence detecting means 3 comprises a plant data inputting means 41 and a setting condition judging means 43, as shown in FIG. The plant data is collected, and the collected plant data d1 is collected.
The setting condition determination unit 43 determines whether an event to be diagnosed has occurred based on the condition. That is, the plant data input means 41 periodically collects the plant data d1 indicating the state of the plant 9, and the setting condition determination means 43 synchronizes the plant data d1 with the plant data input means 41 to collect the plant data d1. Plant data storage unit 45
At the same time, referring to the setting condition of the plant data set in advance as the diagnosis start condition in the setting condition database 47, it is checked whether or not the collected plant data d1 satisfies the setting condition. If there is, the time data d2 is fetched from the clock 49, and the collected plant data with the time data is output to the cause diagnosing means 11 as the diagnostic data d3.

However, in the conventional cause diagnosis apparatus having such an event occurrence detecting means 3, the state of the plant 9 is unstable and the plant data satisfies the set conditions.
If the failure is repeated several times in a short time, the diagnosis is performed every time the set condition is satisfied, and the same diagnosis result is displayed on the display means in a short time, which may confuse the operator in some cases. was there.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the prior art, the present invention makes it possible to display plant monitoring information and information relating to a diagnosis result of a plant on the same display means, so that new information can be displayed during plant monitoring. It is an object of the present invention to provide a cause diagnosis device that can automatically display information on the latest diagnosis event when a new diagnosis event occurs.

Further, according to the present invention, when a new diagnostic event occurs while the diagnostic information is being displayed, it is automatically determined whether or not the operator is performing data analysis on the displayed diagnostic information. Provided is a cause diagnosis device that automatically displays a new diagnosis result when analysis is not being performed and does not automatically display a new diagnosis result when data is being analyzed.

Another object of the present invention is to provide a cause diagnosing apparatus that prevents the same diagnosis from being repeatedly performed when the set conditions are repeatedly satisfied / unsatisfied in a short period of time in plant data.

[0013]

That is, the present invention relates to a cause diagnosing device for diagnosing an abnormal event occurring in a plant and estimating a cause thereof, a display means for displaying diagnostic information and plant monitoring information, and a display request for predetermined information. Input means for inputting information, display data switching means for switching display of diagnostic information and plant monitoring information to display means, and detecting occurrence of an event to be diagnosed based on plant data collected from the plant, and diagnosing the cause thereof. and line Ubara cause diagnosis processing means, original
A diagnostic information display data creating means based on the diagnosis result by the factor diagnosis processing means to create a diagnostic information display data output to the display means via the display data switching means, the diagnostic result generation notification from the cause diagnosis processing means, Displayed on display
Information and determine whether to switch the display.
When the display is switched by a constant, a display switching command for switching the display to the diagnostic information is output to the display data switching means,
Display switching command means for requesting the diagnostic information display data creating means to create the latest diagnostic information display data.

Further, according to the present invention, in the cause diagnosing device having the above structure, the cause diagnosing means further includes a notifying means for notifying an operator that the diagnosis result has been output from the cause diagnosing means. Determines whether or not the operator is analyzing the information displayed on the display means based on the notification of the diagnosis result from the user. If not, creates the latest diagnostic information display data on the diagnostic information display data creation means. Output the diagnostic information to the display data switching means and display the latest diagnostic information on the display means. The information display data creation request is not performed.

According to the present invention, in the cause diagnosing device, the display switching command means may include plant monitoring information and
While displaying the diagnostic information according to the request from the display switching command means , the operator judges that the display information is not under data analysis, and while displaying the diagnostic information requested through the input means , the operator determines the display information. characterized by determining that the data is being analyzed.

Further, the cause diagnosis apparatus of the present invention includes a plant data input means for collecting plant data from a plant, a setting condition database for storing in advance setting conditions set as a diagnosis start condition for the plant data, The collected plant data from the data input means is compared with the set conditions in the set condition database, and when the set plant condition data is included in the collected plant data, the time at that point is added to the collected plant data and output as diagnostic data. An occurrence time file for storing a setting condition determining means and a diagnosis block time set as a minimum elapsed time from the previous diagnosis time to the next diagnosis time for each data of the collected plant data; And the diagnostic data output from the setting condition determination means and the time of occurrence Timing for calculating the elapsed time from the previous diagnosis time for the data for which the set conditions are satisfied based on the file and outputting the diagnosis data only when the calculated elapsed time is longer than the preset diagnosis block time It is characterized by comprising a judgment means, and a cause diagnosis means for performing a cause diagnosis based on the diagnosis data output from the timing judgment means.

[0017]

In the above-mentioned configuration in which the diagnostic information and the plant monitoring information can be displayed on the common display means, the display switching command means receives the notification of the occurrence of a new diagnosis result from the cause diagnosis processing means, and By checking the display contents and the display request source, it is determined whether the operator is analyzing the data being displayed, and only when it is determined that the data is not being analyzed, a newly generated diagnostic result is automatically displayed. Thus, an appropriate command is output to the diagnostic information display data creating means and the display data switching means.

In the latter configuration for outputting diagnostic data to the cause diagnosing means, a timing determining means and an occurrence time file are provided so that it is necessary to diagnose the occurrence of a plurality of plant events occurring in a short time. The presence / absence is determined, and diagnostic data is not output to the cause diagnosing means for the same event that does not elapse a predetermined time from the previous diagnostic time. This can prevent the same diagnostic result from being displayed repeatedly.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. Note that the same reference numerals are given to portions common to the conventional example, and redundant description will be omitted.

FIG. 1 shows an embodiment (hereinafter referred to as a first embodiment) of a cause diagnosis apparatus according to the present invention.
FIG. In FIG. 1, the cause diagnosis device comprises a cause diagnosis processing means 3 and a diagnosis result display processing means 5 '. Data file 29 and monitoring information display data creating means 35
Is connected.

As in the prior art shown in FIG. 12, the cause diagnosis processing means 3 constantly monitors the state of the plant 9 and detects the occurrence of a diagnostic event. A cause diagnosing means 11 for diagnosing the cause of the occurrence of the event based on the diagnostic data and the diagnostic knowledge base 13 and storing the diagnostic result in a diagnostic result file 15, and a diagnostic result storage file 19 for storing the contents of the diagnostic result file 15
The diagnostic result storage means 17 notifies the diagnostic result display processing means 5 'of the occurrence of a new diagnostic result.

The diagnostic result display processing means 5 'includes a notifying means 21 for notifying the operator of the occurrence of a new diagnostic result, and a display / input means for displaying diagnostic information and monitoring information and receiving a command operation from the operator. 53, diagnostic information display data creating means 2 for extracting diagnostic information relating to a desired diagnostic result from the diagnostic result storage file 19 and creating display data
3, display data switching means 55 for switching between display data from the diagnostic information display data creating means 23 and display data from the monitoring information display data creating means 35 in the plant monitoring processing means 51 and outputting to the display / input means 53; Receives the notification of the occurrence of a new diagnosis result from the cause diagnosis processing means 3,
Display switching command means 57 for activating notifying means 21 and outputting a display switching command to display data switching means 55
It is composed of

FIG. 2 shows an example of a configuration in which the cause diagnosis apparatus having the above-described structure is realized by using an electronic computer. The cause diagnosis processing means 3 and the display switching command of the diagnosis result display processing means 5 'are shown. Means 57, diagnostic information display data creation means 2
3 and the diagnosis result storage file 19 are constructed on the computer A, and the plant monitoring processing means 51
Built on top. The display / input means 53 is a monitor CRT and a console C shared by the computers A and B, and the display data switching means 55 is a signal input / output between the computers A and B and the monitor CRT and the console C. As a signal switching device D for switching and connecting
The notification means 21 is realized as a chime E and a notification lamp F.

Next, the operation of this embodiment will be described. First,
When the cause diagnosis processing unit 3 monitors the plant 9 and diagnoses the cause by detecting the occurrence of an event, the diagnosis result is registered in the diagnosis result storage file 19 by the diagnosis result storage unit 17.

Here, the configuration of the diagnosis result storage file 19 is illustrated in FIG. The diagnosis result storage file 19 includes a diagnosis occurrence item file 190 for sequentially storing cause codes as diagnosis results output from the cause diagnosis processing means 3, a guide message number corresponding to each cause code, a digital trend item number, and related information. A support information index file 191 in which display screen numbers are set in advance, a guide message file 192 for storing causes and corresponding guide messages for each guide message number, and a point ID of plant data to be displayed for each digital trend item number To do digital trend item file 193
And a related information display screen file 19 for storing the screen number of each graph screen to be monitored for each related information display screen number
4. In this configuration, when creating the diagnostic information display data, the diagnostic information display data creating means 23 first selects a corresponding diagnostic result (cause code) from the diagnostic occurrence item file 190. Next, a guide message number, a digital trend item number, and a related information display screen number corresponding to the selected cause code are obtained from the support information index file 191, and the support information corresponding to each number is provided based on these numbers. From the file 192, the digital trend item file 193, and the related information display screen file 194, extracted diagnostic information display data is created. Guide message file 1
Reference numeral 92 stores a guide message corresponding to a diagnosis result (cause), and is a content for urging an operator to confirm and operate the plant. The digital trend item file 193 is to provide plant data to be monitored in relation to a diagnosis result (cause). Further, the related information display screen file 194 relates to the diagnosis result (cause),
This provides a graph screen to be monitored.

A new diagnosis result by the cause diagnosis processing means 3 is registered in the diagnosis occurrence item file 190 of the diagnosis result storage file 19 as described above, and at the same time, the occurrence of the diagnosis result is notified to the display switching instruction means 57. . The display switching command unit 57 checks the switching state of the display data switching unit 55 based on the notification of the occurrence of the diagnosis result, and determines whether the switching state is the plant monitoring side or the cause diagnosis side.

When the switching state is the plant monitoring side,
Since the operator is considered to be in a normal plant monitoring operation, the operator outputs a command to the display data switching means 55 to switch to the cause diagnosis side, and instructs the diagnosis information display data creation means 23 to display data for the latest diagnosis result. Request to create The diagnostic information display data creating means 23 creates the latest diagnostic information display data from the diagnostic result storage file 19 according to the procedure described above in response to the display data creating instruction from the display switching instruction means 57, and displays the display data switching means 55. Is output to the display / input means 53 via the. As a result, the display data relating to the latest diagnosis result is automatically displayed on the display / input means 53 instead of the display data relating to the plant monitoring information. At the same time, the display switching command means 57 notifies the operator of the occurrence of a new diagnosis result by using the chime E.

If the switching state of the display data switching means 55 is on the cause diagnosis side, the display switching instruction means 57 next issues a display data creation request to the diagnostic information display data creation means 23. Is determined by the operator or through the display / input means 53 by the operator. If the command is issued by the display switching command means 57, it is considered that the operator is not investigating the information on the latest diagnosis result, so the display information creation request for the latest diagnosis result is sent to the diagnosis information display data creation means 23. Is output, the latest diagnostic information is displayed on the display / input means 53, and the occurrence of a new diagnostic result is notified by the chime E.

On the other hand, if it is requested by the operator, it is considered that the operator is analyzing the display data relating to the diagnosis result, so the automatic display of the latest diagnosis information is not performed, and the chime E and the notification Only the operator is notified of the occurrence of a new diagnosis result by the lamp F, and after the operator finishes the current analysis work, the operator is prompted to confirm it again by operating the display / input means 53 again. .

FIG. 4 collectively shows the operation of the chime E and the notification lamp F and the screen display state as the judgment result corresponding to the judgment condition in the display switching instruction means 57.

As described above, according to the first embodiment, the plant monitoring information and the information on the diagnosis result of the plant can be displayed on the same display means, and a new diagnosis event occurs during the plant monitoring. In this case, by automatically displaying the information on the latest diagnostic event, it is possible to promptly check the diagnostic result on the same display means. In addition, the operator conducts investigations and
During the analysis, the operator may confuse the diagnostic information on the event under investigation with the diagnostic information on the newly occurring event, so check the current screen display contents and the display request source. By doing so, it is determined whether or not the operator is analyzing the data, and the automatic output of the latest diagnosis result is performed only when it can be determined that the data is not being analyzed. To notify the operator of the latest diagnostic results immediately without interrupting the data analysis work of the operator, by notifying only that a new diagnostic result has occurred. can do.

In the above embodiment, whether or not a new diagnosis result is automatically displayed when a new diagnosis result is generated is performed based on the determination conditions shown in FIG. A flag indicating whether or not to automatically display an image may be set from the input unit 53.

In the above-described embodiment, the newly generated diagnostic information is automatically displayed instead of the information displayed on the screen. However, the new display information is not deleted from the screen without deleting the original display information. The diagnostic information may be displayed in a window.

Further, the notification lamp may be put on a part of the screen.

FIG. 5 shows a second embodiment of the cause diagnosis apparatus according to the present invention. This embodiment corresponds to claim 4. The cause diagnosis apparatus according to the present embodiment includes, as an event occurrence detecting means 3 ',
In addition to the conventional configuration shown in FIG.
1 and an occurrence time file 63 are provided. That is, the cause diagnosis apparatus of the present embodiment includes a plant data input unit 41 that collects plant data from the plant 9, a setting condition database 47 in which setting conditions of plant data determined to be an event occurrence are stored in advance, and a plant data Setting condition determining means 43 for determining whether or not a diagnostic event has occurred based on the setting condition database 47 for the plant data collected by the input means 41;
Is a clock 49 for adding time data to the collected plant data as diagnostic data when it is determined that an event has occurred, and an occurrence time file 63 for storing the previous diagnosis time and diagnosis block time when the set conditions are satisfied for each plant data number.
It is determined whether the same event has not been diagnosed within the predetermined diagnostic block time based on the diagnostic data output from the setting condition determining means 43 and the occurrence time file 63, An event occurrence detecting means 3 'including a timing determining means 61 for outputting diagnostic data when the time has elapsed, a cause diagnosing means 11 for performing a cause diagnosis based on the diagnostic data output from the timing determining means 61, and a diagnostic result. The display / input means 25 for displaying is constituted.

Next, the operation of the second embodiment will be described.

The plant data input means 41 scans the state of the plant 9 in the order of predetermined data numbers up to the number N of data items, and collects plant data d as shown in FIG.
Edited to 1 and sent to the setting condition judgment means 43.

Upon receiving the collected plant data d1, the setting condition judging means 43 refers to the setting condition database 47, compares the input values for the data numbers in the order of data numbers with the setting conditions in the setting condition database 47, and inputs the data. It is determined whether the value satisfies the setting condition.

Here, a data configuration of the setting condition database 47 is illustrated in FIG. In the setting condition database 47, setting values and setting conditions for data numbers are set in advance in the order of the plant data numbers. The setting condition is “1” if the value is equal to or more than the set value, and “0” if the value is smaller than the set value.
Shall be set. In the setting example shown in FIG. 7, the setting condition for the plant data with the data number 1 is “3000 or more”, and the setting condition for the data number 3 is “less than 10000”.

The processing of the setting condition determining means 43 will be described with reference to the flowchart of FIG. First, upon receiving the collected plant data d1, the setting condition judging means 43 sets the data number counter i to "1" which is an initial value (step 430). The set value and the set condition for the data are read (step 431). Then, the input value of the data number i is compared with the set value, and when the input value is equal to or larger than the set value, the comparison result is set to “1”, and when the input value is smaller than the set value, the comparison result is set to “0” (step 432). In step 433, when the comparison result is equal to the set condition, the time data d2 is collected from the clock 49, and the data number i at which the set condition is satisfied as shown in FIG. Diagnostic data d
3 is output (step 434). If the comparison result is not equal to the set condition, it is determined whether the data number counter i has reached the number N of data items (step 435). If not, the data number counter i is incremented by one (step 4).
36), the process returns to the step 431. The above process is repeated until the data number counter i reaches the final data number N.

The setting condition judging means 43 outputs the diagnostic data d3 as shown in FIG. 9 to the timing judging means 61 when the set condition is satisfied in the collected plant data d1 by the above processing.

The timing determining means 61 determines whether the diagnostic data d
3 is received, the generation time file 63 is referred to, and FIG.
The necessity of diagnosis is determined according to the flowchart shown in FIG.

Here, the data structure of the occurrence time file 63 is illustrated in FIG. In the occurrence time file 63, the minimum time from the previous diagnosis time required for performing the diagnosis for each data number of the plant data, that is, the diagnosis block time, is set in advance, and the previous setting condition is satisfied for each data number. The time at which the diagnosis was made is recorded. In the example of FIG. 11, the previous diagnosis time and the diagnosis block time are 14
4 digits from the left, 2 digits for the month, 2 digits for the day
Digits, hours are shown in two digits, minutes are shown in two digits, and seconds are shown in two digits. Therefore, the previous diagnosis time for data number 2 is 1992
The time is 13:17:26 on January 16, and the diagnostic block time is 1 minute. In this case, the plant data of data number 2 means that the diagnosis will not be made even if the set condition is satisfied unless one minute or more has passed since the previous diagnosis time. At the previous diagnosis time, for example, in the initial state, for example,
“99999999999999” is set.

As shown in the flow chart of FIG. 10, when the timing judging means 61 receives the diagnostic data d3 as shown in FIG. 9, it is registered in the occurrence time file 63 for the data number i for which the current setting condition is satisfied. The occurrence time data including the previous diagnosis time and the diagnosis block time is read (step 610), and it is determined whether or not the previous diagnosis time is an initial value (step 611). If the previous diagnosis time is the initial value, the process proceeds to step 612, where the diagnosis data d3 is output to the cause diagnosis means 11 as a diagnosis start command, and at step 613 the previous diagnosis time in the occurrence time file 63 is changed to the time of the diagnosis data d3. And the process of the timing determination means 61 ends.

If it is determined in step 611 that the previous diagnosis time is not the initial value, the process proceeds to step 614, where the diagnosis data d
Calculate the time difference (elapsed time after diagnosis) from the time of 3 and the previous diagnosis time. Next, the elapsed time after diagnosis is compared with the diagnosis block time (step 615). If the elapsed time after diagnosis is longer than the diagnosis block time, the process proceeds to step 612. If the elapsed time after diagnosis is shorter, the process of the timing determination unit 61 ends.

Thus, the timing determining means 61
When the same event occurs within a preset time, the diagnostic data d3 is not passed to the cause diagnostic means 11 so that the cause diagnosis is not performed.

The cause diagnosing means 11 makes a cause diagnosis based on the diagnosis data d 3 received from the timing judging means 61, and displays the diagnosis result on the display / input means 25.

As described above, in the second embodiment, the occurrence time file 63 in which the previous diagnosis time and the diagnosis block time are registered for each data number is provided. , The necessity of diagnosis is determined for the diagnostic data output from the setting condition determining means 43. For example, if the event described here is an alarm that occurs in the power plant, if the plant condition is unstable and an alarm is generated once, and after an instant reset, the same alarm is generated again in a short time, the first time It is not conceivable that the state of the plant changes significantly between the occurrence of the second alarm and the second alarm. That is, it is highly possible that the same diagnostic result is output for the first and second alarm occurrences, and when such a state is repeated a plurality of times,
It is considered that the cause diagnosis device outputs the same diagnosis result many times. However, according to the second embodiment,
By cutting the diagnostic data indicating the same alarm output within a short time using the timing determination 61, it is possible to prevent the same diagnostic result from being output within a short time.

Although the second embodiment has been described using an analog quantity as input data, even when a digital quantity or data subjected to calculation processing (integration processing, differentiation processing, etc.) is used, a fixed amount is obtained from the previous diagnosis. Anything that blocks the time diagnosis of is included in the scope of the present invention.

[0050]

As described above, according to the present invention, the timing determination means 1 determines the necessity of diagnosis for the occurrence of an event of the plant 6 which has occurred during a certain period of time while referring to the occurrence time file 2. Thus, it is possible to prevent the same diagnostic result from being output many times in a short time.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of a cause diagnosis apparatus according to the present invention.

FIG. 2 is a block diagram showing a configuration in a case where the cause diagnosis apparatus of FIG. 1 is realized using an electronic computer.

FIG. 3 is a diagram showing a configuration of a diagnosis result storage file.

FIG. 4 is a diagram illustrating a determination result corresponding to a determination condition in a display switching instruction unit.

FIG. 5 is a block diagram showing a second embodiment of the cause diagnosis apparatus of the present invention.

FIG. 6 is a diagram showing a content configuration of collected plant data.

FIG. 7 is a diagram showing a data configuration of a setting condition database. Configuration diagram and setting example of occurrence time file 2

FIG. 8 is a flowchart illustrating a processing operation of a setting condition determination unit.

FIG. 9 is a diagram showing a content configuration of diagnostic data.

FIG. 10 is a flowchart illustrating a processing operation of a timing determination unit.

FIG. 11 is a diagram illustrating a data configuration of an occurrence time file.

FIG. 12 is a block diagram showing a conventional example of a cause diagnosis device.

FIG. 13 is a block diagram showing a conventional configuration of event occurrence detection means of the cause diagnosis device.

[Explanation of symbols]

 1 '... Cause diagnosis apparatus 3 ... Cause diagnosis processing means 5' ... Diagnosis result display processing means 7 ... Event occurrence detection means 9 ... Plant 11 ... Cause diagnosis means 13 ... Diagnosis Knowledge base 15 Diagnostic result file 17 Diagnostic result storage means 19 Diagnostic result storage file 21 Notification means 23 Diagnostic information display data creation means 25 Display / input for diagnosis Means 29 Monitoring data file 31 Data collection means 35 Monitoring information display data creation means 41 Plant data input means 43 Setting condition determination means 45 Plant data storage unit 47 Setting condition database 49 Clock 51 Plant monitoring processing means 53 Display / input means 55 Display data switching means 57 Display switching finger Means 61 ......... timing determination means 63 ......... occurrence time file

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-256805 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01D 21/00 G05B 23/02 301

Claims (3)

(57) [Claims] 1. A cause diagnosis device for diagnosing an abnormal event occurring in a plant and estimating a cause, a display means for displaying diagnosis information and plant monitoring information, an input means for inputting a request for displaying predetermined information, the display data switching means for performing display switching on the display means, detects the occurrence of an event to be diagnosed based on plant data collected from the plant, the cause diagnostic line Ubara cause diagnostic process and plant monitoring information means, and the diagnostic information display data producing means for outputting to the display means via the display data switching means to create a diagnostic information display data based on the diagnosis result by the responsible diagnosis processing means, before Symbol cause diagnosis processing means The notification of the diagnosis result
Whether to switch the display by judging the information being displayed on the display means
If you decide whether or not to switch the display by this decision
Outputs a display switching instruction to switch the display to the diagnostic information to the display data switching unit, and a display switching instruction means for requesting to create a latest diagnostic information display data to the diagnostic information display data producing means A cause diagnosis device, characterized in that: 2. The cause diagnosing device according to claim 1, further comprising notifying means for notifying an operator that a diagnosis result has been output from said cause diagnosing device, wherein said display switching command means comprises: By the diagnosis result notification from the processing means, it is determined whether or not the operator is analyzing the information displayed on the display means, and if not, the latest diagnostic information is displayed on the diagnostic information display data creating means. A request to create display data is issued, and a display switching command to diagnostic information is output to the display data switching means so that the latest diagnostic information is displayed on the display means. A cause diagnosing device characterized by not requesting the means to create the latest diagnostic information display data. 3. The cause diagnosis apparatus according to claim 2, wherein
The display switching command unit is configured to display plant monitoring information and display
While displaying the diagnostic information according to the request from the switching command means , the operator judges that the display information is not under data analysis, and while displaying the diagnostic information requested through the input means , the operator determines the display information. Data analysis in progress
CAUSE diagnostic apparatus and determines that.