JPH06194194A - Cause diagnostic device - Google Patents

Abstract

PURPOSE:To automatically display information on the newest diagnostic phenomenon when a new diagnostic phenomen is generated during plant monitoring by providing a display changeover commanding means for requiring a diagnostic information display data preparing means to prepare the newest diagnostic information display data. CONSTITUTION:A cause diagnostic device 1' is constituted of a cause diagnosing and processing means 3 and a diagnostic result displaying and processing means 5', and a plant monitoring and processing means 51 consisting of a data collecting means 31, a monitoring data file 29 and a monitor information display data preparing means 35 is connected to the processing means 5'. A display changeover command means 57, upon receipt of information on new diagnostic result generation from the cause diagnosing and processing means 3, judges whether or not an operator is analyzing data being displayed, basing on present displayed contents in a displaying means confirmation of a requester for the display and the like. Only when it is judged that the data are not under analysis, a proper command is outputted to a diagnostic information display data preparing means 23 and a display data changeover means 55 so as to automatically display a newly generated diagnostic result.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cause diagnosing device for diagnosing a cause of 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 due to various control devices in order to improve efficiency and operational reliability, and the number of operators involved in the operation tends to decrease. In such a situation, when an abnormality occurs in the plant, in order to enable operators to take appropriate countermeasures by observing the signs of the abnormality, diagnosing the cause for them and displaying the diagnosis result. A diagnostic device for the cause of is created.

FIG. 12 shows the structure of a conventional cause diagnosis apparatus. The cause diagnosis apparatus 1 roughly comprises 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 if any occurrence of a diagnosis target event is caught, the plant data collected from the plant 9 at that time is used as the diagnosis data. Hand it over to the diagnostic means 11,
Notify that an event has occurred. The cause diagnosing means 11 makes a diagnosis based on the received diagnostic data and its own diagnostic knowledge base 13, saves the diagnosis result in the diagnosis result file 15, and at the same time indicates that one diagnosis is completed. Notify 17. The diagnostic result storage means 17 registers the diagnostic result stored in the diagnostic result file 15 in the diagnostic result storage file 19 of the diagnostic result display processing means 5,
The operator is notified of the occurrence of a new diagnostic result via the notification means 21 such as a chime or a notification lamp. The diagnostic result storage file 19 stores all the diagnostic results obtained so far.

The diagnostic result display processing means 5 comprises a diagnostic information display data creating means 23, a notifying means 21 and a diagnostic display / input means 25, and an operator uses the notifying means 21 to indicate the occurrence of a new diagnostic result. When recognizing and issuing a command to display information regarding a desired diagnostic result via the diagnostic display / input means 25, the diagnostic information display data creating means 2
Reference numeral 3 retrieves information on a desired diagnostic result from the diagnostic result storage file 19 and displays it on the diagnostic display / input means 25. Thereby, the operator can confirm the information regarding the desired diagnosis result.

On the other hand, the plant monitoring device 27 which provides the monitoring information of the plant 9 collects the plant data from the plant 9 and stores the data in the monitoring data file 29. Monitoring display / input means 33 for performing, and a monitoring data file 2 according to a display request from the monitoring display / input means 33.
9 and the monitor information display data creating means 35 for creating desired display data of the monitor information.

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 that provides the plant monitoring information. It was installed independently. Therefore, the operator has been troublesome to confirm the information regarding the diagnosis result and the information regarding the plant monitoring by using the respective display / input means 25 and 33.

Further, even when some event occurs and the diagnosis result is derived, the latest diagnosis result is not automatically displayed on the diagnosis display / input means 25, and the notification means 21 is used.
It was only to inform the operator that a new diagnostic result had occurred. For this reason, the operator who receives the notification needs to input the information about the diagnostic result to be investigated from the diagnostic display / input means 25 to the device to check the content of the diagnostic result. When a diagnostic event occurs, there is a problem that information regarding the diagnostic result cannot be obtained promptly.

Further, in the conventional cause diagnostic apparatus, the event occurrence detecting means 3 is composed of 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
Based on the above, the setting condition determination means 43 determines whether or not an event to be diagnosed has occurred. 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 with the plant data input means 41 to collect the collected plant data d1. Plant data storage unit 45
At the same time as saving to the setting condition database 47, referring to the setting condition of the plant data set as the diagnosis start condition in advance, 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 to which the time data is added is output to the cause diagnosis means 11 as the diagnosis data d3.

However, in the conventional cause diagnosing device having such event occurrence detecting means 3, the state of the plant 9 is unstable and the plant data satisfies the setting condition.
If the failure is repeated several times within a short time, the diagnosis will be performed every time the set condition is satisfied, and the same diagnosis result will be displayed on the display means in a short time, which may confuse the operator. 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 plant diagnosis result on the same display means, and to newly display the information during plant monitoring. It is an object of the present invention to provide a cause diagnostic device capable of automatically displaying information regarding the latest diagnostic event when a large diagnostic event occurs.

Further, according to the present invention, when a new diagnostic event occurs while displaying the diagnostic information, it is automatically judged whether or not the operator is analyzing the data regarding the displayed diagnostic information, and the data is analyzed. Provided is a cause diagnostic device that automatically displays a new diagnostic result when not analyzing, and does not automatically display a new diagnostic result when analyzing data.

It is another object of the present invention to provide a cause diagnosis apparatus which prevents the same diagnosis from being repeated when the plant data repeats the establishment / non-establishment of the set condition in a short time.

[0013]

That is, according to the present invention, in a cause diagnosing device for diagnosing an abnormal event that has occurred in a plant and estimating the cause, display means for displaying diagnostic information and plant monitoring information, and a display request for predetermined information. Input means for inputting, display data switching means for switching display of diagnostic information and plant monitoring information to display means, and detection of occurrence of an event to be diagnosed based on plant data collected from the plant and diagnosis of its cause The cause diagnostic processing means for saving the diagnostic result in the diagnostic result save file and the diagnostic information display data creation for creating diagnostic information display data based on the diagnostic result save file and outputting it to the display means via the display data switching means When the means and the display means are displaying the plant monitoring information, the display is made by the diagnosis result occurrence notification from the cause diagnosis processing means. A display switching command unit for outputting a display switching command for switching the display from the plant monitoring information to the diagnostic information to the data switching unit and requesting the diagnostic information display data creating unit to create the latest diagnostic information display data. Is characterized by.

Further, the present invention, in the cause diagnosing device having the above structure, further comprises notifying means for notifying an operator that the diagnosis result is outputted from the cause diagnosing means, and the display switching command means is the cause diagnosing processing means. The operator determines whether or not the information being displayed on the display means is being analyzed by the notification of the occurrence of the diagnostic result from the device, and if not, the latest diagnostic information display data is created in the diagnostic information display data creating means. The display data switching means outputs a display switching command to the diagnostic information to display the latest diagnostic information on the display means, and when analysis is in progress, the latest diagnostic information is displayed to the diagnostic information display data creating means. The feature is that a request for creating information display data is not made.

According to the present invention, in such a cause diagnostic device, while the display switching command means is displaying the plant monitoring information and the diagnostic information requested through the input means, the operator is not analyzing the data of the display information. When the diagnostic information is being displayed in response to the request from the display switching commanding means, the operator judges that the display information is undergoing data analysis.

Furthermore, the cause diagnosis apparatus of the present invention is a plant data input means for collecting plant data from a plant, a setting condition database for storing in advance setting conditions set as diagnostic start conditions for the plant data, and a plant. The collected plant data from the data input means is compared with the setting conditions in the setting condition database, and when the collected plant data has setting condition satisfaction data, the time at that point is added to the collected plant data and output as diagnostic data. An occurrence time file that stores setting condition determination means and a diagnosis time at which the previous setting condition is satisfied for each piece of collected plant data and a diagnosis block time set as the minimum elapsed time from the previous diagnosis time to the next diagnosis time. And the diagnostic data output from the setting condition determination means and when Timing to calculate the elapsed time from the previous diagnostic time for the data that satisfies the setting conditions this time based on the file, and output the diagnostic data only when the calculated elapsed time is longer than the preset diagnostic block time It is characterized by comprising a judging means and a cause diagnosing means for making a cause diagnosis based on the diagnostic data output from the timing judging means.

[0017]

In the above construction 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 generation of a new diagnosis result from the cause diagnosis processing means, and the current display means By checking the display contents and the display request source, etc., it is judged whether the operator is analyzing the data being displayed, and only when it is judged that the data is not being analyzed, the newly generated diagnostic result is automatically displayed. In this way, an appropriate command is output to the diagnostic information display data creating means and the display data switching means.

Further, in the latter configuration for outputting diagnostic data to the cause diagnosing means, it is necessary to provide a timing determining means and an occurrence time file for diagnosing the occurrence of a plurality of plant events in a short time. The presence / absence is determined, and the diagnostic data is not output to the cause diagnostic means for the same event in which a predetermined time has not passed from the previous diagnostic time. This can prevent the same diagnostic result from being repeatedly displayed.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. The same parts as those of the conventional example are designated by the same reference numerals, and the duplicate description will be omitted.

FIG. 1 shows an embodiment (hereinafter referred to as a first embodiment) of a cause diagnosis apparatus of the present invention corresponding to claims 1 to 3.
It is a block diagram showing. In FIG. 1, the cause diagnosing device comprises a cause diagnosing processing means 3 and a diagnosing result display processing means 5 ', and the diagnosing result display processing means 5'is provided with a data collecting means 31 and a monitoring means 31 of a conventional plant monitoring device 27. Data file 29 and monitoring information display data creating means 35
The plant monitoring processing means 51 consisting of is connected.

As in the conventional example 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. The cause of the event is diagnosed based on the diagnostic data and the knowledge base 13 for diagnosis, and the cause diagnostic means 11 for storing the diagnostic result in the diagnostic result file 15 and the content of the diagnostic result file 15 are stored in the diagnostic result storage file 19.
The diagnostic result storage means 17 notifies the occurrence of a new diagnostic result to the diagnostic result display processing means 5 '.

The diagnostic result display processing means 5'is a notification means 21 for notifying an 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 and diagnostic information display data creating means 2 for taking out diagnostic information relating to a desired diagnostic result from the diagnostic result saving file 19 and creating display data.
3, and display data switching means 55 for switching the display data from the diagnostic information display data creating means 23 and the 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 a new diagnosis result occurrence notification from the cause diagnosis processing means 3,
A display switching command means 57 for activating the notification means 21 and outputting a display switching command to the display data switching means 55.
It consists of and.

FIG. 2 shows an example of a configuration in which the cause diagnosing device having the above-mentioned configuration is realized by using an electronic computer. The cause diagnosing processing means 3 and the diagnostic result display processing means 5'display switching command. Means 57, diagnostic information display data creation means 2
3 and the diagnostic result storage file 19 are built on the computer A, and the plant monitoring processing means 51 is the computer B.
Built on. Further, the display / input means 53 is the monitor CRT and console C shared by the electronic computers A and B, and the display data switching means 55 is the input / output of signals between the electronic computers A and B and the monitor CRT and 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 means 3 monitors the plant 9 and makes a cause diagnosis by catching an event occurrence, the diagnosis result storage means 17 registers the diagnosis result in the diagnosis result storage file 19.

The structure of the diagnostic result storage file 19 is illustrated in FIG. The diagnostic result storage file 19 includes a diagnostic occurrence item file 190 that sequentially stores a cause code as a diagnostic result output from the cause diagnostic 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, whose display screen number is preset, a guide message file 192 for storing the cause and corresponding guide message for each guide message number, and a point ID of plant data to be displayed for each digital trend item number. Digital trend item file 193
And the related information display screen file 19 that stores the screen number of each graph screen to be monitored for each related information display screen number.
It is composed of 4. In this configuration, when the diagnostic information display data creating means 23 creates the diagnostic information display data, first, the corresponding diagnostic result (cause code) is selected from the diagnostic occurrence item file 190. Then, from the support information index file 191, the guide message number corresponding to the selected cause code, the digital trend item number, and the related information display screen number are obtained, and the support information corresponding to each number is displayed based on these numbers. Extraction diagnostic information display data is created from the file 192, digital trend item file 193, and related information display screen file 194. The guide message file 1
Reference numeral 92 stores a response guide message for the diagnosis result (cause), and has the content of prompting the operator to confirm and operate the plant. The digital trend item file 193 provides plant data to be monitored in relation to the diagnosis result (cause). Further, the related information display screen file 194 relates to the diagnosis result (cause),
It provides a graphical screen to monitor.

The new diagnosis result by the cause diagnosis processing means 3 is registered in the diagnosis occurrence item file 190 of the diagnosis result saving file 19 as described above, and at the same time, the occurrence of the diagnosis result is notified to the display switching command means 57. . The display switching command means 57 checks the switching state of the display data switching means 55 by 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 engaged in normal plant monitoring work, the operator outputs a command to the display data switching means 55 to switch to the cause diagnosis side, and the display information for the latest diagnosis result to the diagnostic information display data creating means 23. 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 in accordance with the display data creating command from the display switching command means 57 according to the procedure described above, and the display data switching means 55. It outputs to the display / input means 53 via. As a result, the display / input means 53 automatically displays the display data regarding the latest diagnosis result instead of the display data regarding the plant monitoring information. At the same time, the display switching command means 57 notifies the operator by the chime E that a new diagnosis result is generated.

When the switching state of the display data switching means 55 is on the cause diagnosis side, the display switching command means 57 next issues a display data creation request to the diagnostic information display data creation means 23. It is determined whether it has been made by the operator or by the operator through the display / input means 53. If the display switching command means 57 is issued, it is considered that the operator is not investigating the information relating to the latest diagnostic result, and therefore the diagnostic information display data creating means 23 is requested to create the display data for the latest diagnostic result. Is output, and the latest diagnostic information is displayed on the display / input means 53, and the chime E notifies the occurrence of a new diagnostic result.

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 latest diagnostic information is not automatically displayed, and the chime E and the notification are sent. The lamp F is used to notify the operator of the occurrence of a new diagnosis result, and the operator is requested to confirm it by operating the display / input means 53 again after the current analysis work is completed. .

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

As described above, according to the first embodiment, the plant monitoring information and the information regarding the diagnosis result of the plant can be displayed on the same display means, and a new diagnostic event occurs during the plant monitoring. At this time, by automatically displaying the information on the latest diagnostic event, the diagnostic result can be quickly confirmed on the same display means. In addition, the operator can
During the analysis, the operator may confuse the diagnostic information about the event under investigation with the diagnostic information about the new event, so check the current screen display contents and the display request source. By doing so, it is determined whether the operator is analyzing the data, and the latest diagnostic result is automatically output only when it can be determined that the operator is not analyzing the data. Since it is only notified that a new diagnosis result has occurred and automatic output is not performed, the operator is promptly provided with information regarding the latest diagnosis result without disturbing the data analysis work of the operator. can do.

In the above embodiment, whether or not a new diagnostic result is automatically displayed is determined based on the determination condition shown in FIG. A flag indicating whether or not to automatically display from the input means 53 may be set.

Further, in the above-mentioned embodiment, the newly generated diagnostic information is automatically displayed instead of the information displayed on the screen, but the original display information is not erased from the screen and is newly displayed. The diagnostic information may be displayed in a window.

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

FIG. 5 shows a second embodiment of the cause diagnosis apparatus of the present invention, and this embodiment corresponds to claim 4. The cause diagnosing device of the present embodiment, as the 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 diagnosing device 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 are stored in advance, and plant data. A setting condition determining unit 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 unit 41, and a setting condition determining unit 43.
When the event occurrence is determined to occur, a clock 49 that adds time data to the collected plant data as diagnostic data, and an occurrence time file 63 that stores the previous diagnosis time and the diagnosis block time when the setting condition is satisfied for each plant data number.
Then, based on the diagnostic data and the occurrence time file 63 output from the setting condition determining means 43, it is determined whether or not the same event has been diagnosed within a predetermined diagnostic block time. The event occurrence detection means 3 ', which includes a timing determination means 61 that outputs diagnostic data when the time has elapsed, a cause diagnostic means 11 that performs a cause diagnosis based on the diagnostic data output from the timing determination means 61, and a diagnostic result. The display / input means 25 for displaying is configured.

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

The plant data input means 41 scans the state of the plant 9 in order of predetermined data numbers up to the number of data N, and collects plant data d as shown in FIG.
It is edited to 1 and sent to the setting condition judging 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 with the setting conditions in the setting condition database 47, and inputs them. It is determined whether the value satisfies the setting condition.

The data structure 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 preset in the order of plant data numbers. The setting condition is "1" if it is more than the set value and "0" if it is less than the set value.
Shall be set. In the setting example shown in FIG. 7, the setting condition for the plant data of 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 judging means 43 will be described with reference to the flowchart of FIG. First, when the setting condition determination means 43 receives the collected plant data d1, it sets the initial value "1" to the data number counter i (step 430), and the plant of the data number of the counter i from the setting condition database 47. The set value and the set condition for the data are read (step 431). Then, the input value of the data number i and the set value are compared, and the comparison result is set to "1" when the input value is equal to or larger than the set value, and the comparison result is set to "0" when the input value is less than the set value (step 432). In step 433, when this 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 as shown in FIG. 9 is satisfied, the time when the set condition is satisfied, and the collected plant data are collected. Diagnostic data d
3 is output (step 434). If the comparison result is not equal to the set condition, it is judged whether the data number counter i has reached the number of data N (step 435). If not, the data number counter i is incremented by 1 (step 4).
36), and returns to the process of 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 shown in FIG. 9 to the timing judging means 61 when the collected plant data d1 satisfies the setting condition by the above processing.

The timing judging means 61 is arranged to detect the diagnostic data d.
When 3 is received, the occurrence time file 63 is referred to, and
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 diagnosis for each data number of the plant data, that is, the diagnosis block time is preset, 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
It consists of digits. From the left, the year is 4 digits, the month is 2 digits, and the day is 2
Digits, hours are 2 digits, minutes are 2 digits, and seconds are 2 digits. Therefore, the previous diagnosis time for data number 2 is 1992.
It is 13:17:26 on January 16, and the diagnosis block time is 1 minute. In this case, it means that the plant data of data number 2 will not be diagnosed even if the set condition is satisfied unless 1 minute or more has passed from the previous diagnosis time. At the last diagnosis time, in the initial state, for example,
"9999999999999999" is set.

As shown in the flow chart of FIG. 10, when the timing judgment means 61 receives the diagnostic data d3 shown in FIG. 9, the timing judgment means 61 is registered in the occurrence time file 63 for the data number i for which the setting condition is satisfied this time. Occurrence time data including the previous diagnosis time and the diagnosis block time is read (step 610), and it is determined whether 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, the diagnosis data d3 is output to the cause diagnosis means 11 as a diagnosis start command, and the previous diagnosis time of the occurrence time file 63 is set to the time of the diagnosis data d3 in step 613. And the processing of the timing determination means 61 is ended.

If the previous diagnosis time is not the initial value in step 611, the process proceeds to step 614 and the diagnosis data d
Calculate the time difference (elapsed time after diagnosis) from the time of 3 and the previous diagnosis time. Then, the post-diagnosis elapsed time is compared with the diagnosis block time (step 615). If the post-diagnosis elapsed time is longer than the diagnosis block time, the process proceeds to step 612. If the post-diagnosis elapsed time is shorter than the diagnosis block time, the process of the timing determination means 61 is ended.

In this way, the timing judgment means 61
When the same event occurs within a preset time, the diagnostic data d3 is not passed to the cause diagnosing means 11, so that the cause diagnosis is not performed.

The cause diagnosing means 11 carries out a cause diagnosis based on the diagnosis data d3 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 is provided for each data number, and the timing judgment means 61 is based on this occurrence time file 63. Determines whether or not diagnosis is required for the diagnostic data output from the setting condition determination means 43. For example, if the event described here is an alarm that occurs in a power plant, if the condition of the plant is unstable and an alarm is issued once, and the same alarm is issued again within a short time after an instant reset, It is unlikely that the state of the plant will change significantly between the occurrence of the second alarm and the second alarm. That is, there is a high possibility that the same diagnostic result will be output for the first and second alarm occurrences, and if such a state is repeated multiple times,
It is conceivable that the cause diagnostic device will repeatedly output the same diagnostic result. However, according to the second embodiment,
By cutting the diagnostic data indicating the same alarm output within a short time using the timing judgment 61, it is possible to prevent the same diagnostic result from being output during a short time.

In the second embodiment, the analog quantity is used as the input data. However, even when the digital quantity or the data subjected to the calculation processing (integration processing, differentiation processing, etc.) is used, it is constant from the previous diagnosis. Anything that blocks the time diagnosis is included in the scope of the present invention.

[0050]

As described above, according to the present invention, the timing determination means 1 refers to the occurrence time file 2 and determines the necessity of diagnosis for the occurrence of an event in the plant 6 that occurs during a certain fixed time. As a result, it was possible to prevent the same diagnostic result from being output many times in a short time.

[Brief description of drawings]

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

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

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

FIG. 4 is a diagram showing a determination result corresponding to a determination condition in a display switching command means.

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 structure of a setting condition database. Configuration diagram and setting example of occurrence time file 2

FIG. 8 is a flowchart showing a processing operation of setting condition determination means.

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

FIG. 10 is a flowchart showing the processing operation of the timing determination means.

FIG. 11 is a diagram showing a data structure 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 a cause diagnostic device.

[Explanation of symbols]

 1 '... Cause diagnosis device 3 ......... Cause diagnosis processing means 5' ... Diagnostic result display processing means 7 ...... Event occurrence detection means 9 ......... Plant 11 ......... Cause diagnosis means 13 ... 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 ……… Diagnostic display / input Means 29 ... Monitoring data file 31 ... Data collecting means 35 ... Monitoring information display data creating means 41 ... Plant data input means 43 ... Setting condition judging means 45 ... Plant data storage section 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

Claims (4)

[Claims] 1. A cause diagnosing device for diagnosing an abnormal event occurring in a plant and presuming the cause, display means for displaying diagnostic information and plant monitoring information, input means for inputting a display request for predetermined information, and diagnostic information. And display data switching means for switching the display of the plant monitoring information to the display means, detecting the occurrence of an event to be diagnosed based on the plant data collected from the plant, and diagnosing the diagnostic result by performing the cause diagnosis. A cause diagnosis processing means for saving in a result saving file; a diagnostic information display data creating means for creating diagnostic information display data based on the diagnostic result saving file and outputting it to the display means via the display data switching means; When the display means is displaying the plant monitoring information,
By the diagnosis result occurrence notification from the cause diagnosis processing means,
A display switching command unit for outputting a display switching command for switching the display from the plant monitoring information to the diagnostic information to the display data switching unit and requesting the diagnostic information display data creating unit to create the latest diagnostic information display data. A cause diagnostic device characterized by: 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 the cause diagnosing means, and the display switching command means is provided for the cause diagnosing. By the diagnostic result occurrence notification from the processing means, it is determined whether 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 is made to create display data and a display switching command to diagnostic information is output to the display data switching means to display the latest diagnostic information on the display means, and the diagnostic information display data is created when analysis is in progress. A cause diagnosis device characterized by not requesting the means to create the latest diagnostic information display data. 3. The cause diagnostic device according to claim 2,
The display switching command means determines that the operator is not analyzing the data for the display information while displaying the plant monitoring information and the diagnostic information requested through the input means, and diagnoses according to the request from the display switching command means. While displaying information, a cause diagnosis device characterized in that an operator judges that the displayed information is undergoing data analysis. 4. A plant data input unit that collects plant data from a plant, a setting condition database that stores in advance setting conditions that are set as diagnostic start conditions for the plant data, and a collection plant from the plant data input unit. Check the data against the setting conditions in the setting condition database,
When the collected plant data has setting condition satisfaction data, setting condition determination means for giving the time at that time to the collection plant data and outputting it as diagnostic data, and previously setting condition satisfaction for each data of the collection plant data The occurrence time file that stores the diagnostic time that has become less and the diagnostic block time that is set as the minimum elapsed time from the previous diagnosis time to the next diagnosis time, and the diagnostic data and the occurrence time file that are output from the setting condition determination means. Based on this, the timing judgment for calculating the elapsed time from the previous diagnostic time for the data for which the setting condition is satisfied this time, and outputting the diagnostic data only when the calculated elapsed time is longer than the preset diagnostic block time Means, and cause diagnosis based on the diagnostic data output from this timing determination means. CAUSE diagnostic apparatus characterized by comprising a Cormorant cause diagnostic means.