JP2002373021A - Alarm display device - Google Patents

Abstract

(57) [Summary] [Problem] To display information of alarm states generated at various measuring points in order of priority. SOLUTION: A state quantity calculating section 6 which performs a predetermined calculation on state quantities at various weighing points and outputs it as a calculated state quantity, compares the state quantity or the calculated state quantity with a previously stored alarm limit value. When the actual measurement point of the state quantity or the operation point of the operation state quantity is in the alarm state, the alarm judgment unit 9 storing the result in the time series table 10;
Display 34 for displaying the contents of the plant 2
Priority table 14 that stores in advance the importance at the actual measurement point or the calculation point as a priority, and the priority that determines the priority of the alarm information stored in the time-series table 10 based on the priority and rearranges the priority in the priority order. Degree judgment means 15
And a priority order table 16 for storing results rearranged by the priority determination means 15 and displaying the result on the display unit 34. Thereby, the alarm at the weighing point with high importance is displayed with priority.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alarm display device for displaying a result of monitoring the condition of a plant.

[0002]

2. Description of the Related Art In a variety of plants, a variety of measuring instruments are provided to constantly monitor the state of the plant, and when an abnormality occurs, it is necessary to take prompt and appropriate measures. I have.

Therefore, an alarm limit value is provided for each of the various state quantities (measured values), and if the measured value deviates from the alarm limit value, it is determined that an abnormality has occurred, and an alarm or the like is displayed on the display means. It is supposed to.

[0004] In this specification, the actually measured state quantity is described as an actually measured state quantity, and the result calculated based on the measured value is described as a calculated state quantity. Indicate the amount.

The measurement points of the measured state quantities are described as actual measurement points, and those corresponding to the measurement points of the calculated state quantities are described as calculation points, and when these are collectively referred to as measurement points.

For example, in a plant, a large number of devices such as pipes and valves are used, and the devices are also measured for a plurality of items such as temperature and pressure.

In such a case, the temperature and the like of the equipment are actually measured state quantities, and the time change of the measured data in the equipment is calculated using two or more measured state quantities having different measurement times. is there. Needless to say, the operation point of this operation state quantity is an actual measurement point.

On the other hand, the average state quantity of a plurality of devices is a calculation state quantity because it is obtained by calculation, and the calculation point is an intermediate position between them. For example, the temperature at the inlet and the outlet of the pipe can be measured and the average temperature can be defined. The midpoint of the pipe can be defined as a point corresponding to the actual measurement point of the average temperature.

[0009] Based on this premise, a conventional configuration of an alarm display device 100 for performing plant monitoring display shown in FIG. 26 will be described.

The alarm display device 100 has a display section 134 provided with a display means 136 for displaying various types of alarm information, an alarm display instructing means 135 for instructing display contents on the display means 136, and the acquisition of measured state quantities. , A state quantity calculating section 106 for calculating the calculated state quantity, and an alarm determining section 109 for determining whether or not the state quantity exceeds the alarm limit value and is in an alarm state. .

The state quantity calculation section 106 stores a state quantity calculation information for calculating a state quantity.
7. It is composed of a state quantity calculating means 108 for calculating a state quantity to be described later such as an average value of the state quantity based on the state quantity calculation information.

The monitoring in the plant 102 is diversified, and the state of the same member is monitored at many points to improve the reliability.

However, when making a site decision, it is necessary to specify a location such as "What is the temperature of the device at the XX position?" And to know the temperature of the device. There are times when you want to know the overall temperature regardless of the location.

Further, since the state quantity from the state quantity input unit 105 is the current state quantity, for example, it is necessary to provide information as to whether or not the temperature of the device is changing. In some cases, it is necessary to obtain information such as the rate of change of the data.

In order to respond to such a request, the state quantity calculation means 108 uses the measured state quantity based on the state quantity calculation information set in the calculation information table 107, Are calculated such as a sum, a difference, and an average of the state quantities.

The alarm judgment unit 109 also includes an alarm judgment criterion table 110 for storing an alarm limit value serving as a criterion for judging whether the state quantity is in the alarm state. It is configured by an alarm judgment means 111 for judging whether or not it is based on the alarm limit value stored in the alarm judgment reference table 110, a time series table 112 for storing the results of the alarm judgment means 111 in time series, and the like.

The alarm judging means 111 compares the state quantity with the alarm limit value stored in the alarm judgment reference table 110 to judge whether the corresponding weighing point is in an alarm state.

When it is determined that the alarm state is present, the state quantity is stored in the time series table 112 in time series together with the measurement points.

At this time, the information stored in the time series table 112 is displayed on the display unit 136 together with the current state quantity by the alarm display instructing unit 135, and an alarm is notified.

[0020]

However, in such an alarm display device 100, even if an alarm is generated because the alarm information based on the state quantity is displayed in a time series on the display means 136, the alarm is quickly displayed. In some cases, it was difficult to take appropriate measures.

That is, the plant 102 is composed of a plurality of devices, and the importance is different among the devices from the viewpoint of the safety and reliability of the plant.

For example, in a system in which a plurality of branch pipes are branched from a main pipe of a pipe, when the pressure of the main pipe and the pressure of the branch pipe are both measured, the pressure information of the main pipe is Often more important than branch pipe pressure information.

However, conventionally, the measurement data is not displayed according to the degree of importance, and the alarm information is displayed on the display means 136 in a time-series manner. Even then, it is difficult to recognize this easily, and there is a risk that the response will be delayed or the warning will be missed.

Also, the degree of urgency differs depending on the degree of the alarm. However, information related to the degree of urgency is not displayed in the conventional configuration, so that it may be difficult to always perform an optimal response.

That is, for example, when an alarm is issued for two valves, information indicating which one should be given priority is not displayed, so that the response is performed in the order of display or based on experience or the like.

Therefore, when the part with the lower urgency is displayed first and the part with the higher urgency is displayed next, if the part corresponding to the lower urgency is first corresponded, the urgency of the urgency is displayed in the meantime. There is a risk that high parts will be left unattended.

When an alarm based on the calculated state quantity is displayed on the display means 136, the actual measured state quantity based on which the calculation is performed is not displayed. Need to be monitored.

That is, for example, a plurality of measured state quantities are averaged to obtain a calculated state quantity. If the calculated state quantity exceeds the alarm limit value and is determined to be in an alarm state, one of the plurality of measured state quantities is determined. Since only the actual measured state quantity is an abnormal value, the calculated state quantity may be in an alarm state.

Therefore, in such a case, it is not preferable to take a countermeasure for all measured points of the measured state quantities used in the calculation.

However, in the conventional configuration, since information on the actually measured state quantities used in the calculation is not displayed, it is necessary to separately monitor the information in order to deal with the information.

Further, since only the current state quantity can be displayed on the display means 136, the state cannot be compared even if there is the same state before, and there is a problem that it is difficult to effectively utilize the experience.

That is, since it is impossible to refer to the past state without taking the trouble of referring to the operation record book or the like each time, even if an alarm is generated in the same state as the previously generated alarm, a new alarm is generated. There is a problem that it is necessary to respond as a serious alarm, and it takes time to respond thereafter.

Further, in the above configuration, since only the current alarm state can be displayed, it is difficult to confirm that the alarm has been released when the alarm has been released. Since the status display is performed, it is difficult to accurately grasp the effect of the response.

Accordingly, an object of the present invention is to provide an alarm display device that enables quick and accurate monitoring and control of a plant by always displaying optimum information on a display means.

[0035]

In order to solve the above-mentioned problems, the invention according to claim 1 performs a predetermined operation such as an average value or a change rate on state quantities at various measurement points, A state quantity calculation unit that outputs this as a calculation state quantity is compared with a state quantity or a calculation state quantity and a previously stored alarm limit value, and an actual measurement point of the state quantity or a calculation point of the calculation state quantity indicates an alarm. An alarm judging unit for judging whether or not it is in an alarm state and, when judging that it is in an alarm state, storing the result as an alarm item in a time series table, and an alarm for displaying the contents of the time series table on a display means. An alarm display device having a display unit having a display instructing means, wherein a priority table for storing in advance the importance at an actual measurement point or a calculation point in the plant as a priority, and a time series table based on the priority. Sa And a priority order determination unit that determines the priority order of the alarm information and sorts them in order of priority, and stores a result sorted by the priority order determination unit and displays the result on the display unit. This is an alarm display device characterized by having a configuration in which an alarm at a weighing point with high importance is preferentially displayed so that quick and accurate operation control can be performed.

According to a second aspect of the present invention, there is provided a state quantity calculating section for performing a predetermined calculation such as an average value or a rate of change on the state quantities at various measurement points, and outputting the result as a calculated state quantity. By comparing the state quantity or the calculated state quantity with the previously stored alarm limit value, it is determined whether or not the actual measurement point of the state quantity or the calculation point of the calculated state quantity is in the alarm state. If it is determined that there is an alarm, an alarm determination unit that stores the result as an alarm item in a time-series table, and a display unit that includes an alarm display instruction unit that causes the display unit to display the contents of the time-series table. A display device for determining a deviation of the alarm item from the alarm limit value and sorting the deviation in the order of the deviation, and a deviation in which the determination information for determining the deviation by the deviation determination is stored. Degree table and deviation degree judgment The alarm display device is characterized by having a deviation order table for storing the alarm items in the order of deviation determined in the step, and displaying the alarm on the display unit. The priority is displayed so that quick and accurate operation control can be performed.

According to a third aspect of the present invention, there is provided a calculation method which stores state quantity calculation information for calculating a predetermined calculation state quantity such as an average value and a change rate with respect to the state quantities at various measurement points. An information table, which calculates a state quantity based on the state quantity calculation information and outputs the calculated state quantity; and compares the state quantity or the calculated state quantity with an alarm limit value stored in advance to determine the status. An alarm determination unit that determines whether the actual measurement point of the amount or the operation point of the operation state amount is in the alarm state, and if it is determined that the state is in the alarm state, stores the result as an alarm item in the time series table. An alarm display device having an alarm display instructing means for displaying the contents of the time series table on the display means, and searching for the actual measurement point of the state quantity used for the operation state quantity by referring to the operation information table And the actual An alarm display device having a state quantity display instructing unit for displaying the state quantity of the calculation together with the calculation state quantity on the display unit. With this configuration, information such as the state quantity used for the calculation of the calculation state quantity can be simultaneously displayed. Quick to display,
In addition, accurate operation control can be performed.

According to a fourth aspect of the present invention, there is provided a state quantity calculating section for performing a predetermined calculation such as an average value or a change rate on the state quantities at various measurement points, and outputting the calculated result as a calculated state quantity. By comparing the state quantity or the calculated state quantity with the previously stored alarm limit value, it is determined whether or not the actual measurement point of the state quantity or the calculation point of the calculated state quantity is in the alarm state. If it is determined that there is an alarm, an alarm determination unit that stores the result as an alarm item in a time-series table, and a display unit that includes an alarm display instruction unit that causes the display unit to display the contents of the time-series table. In the display device, an event information table in which a condition for storing the current alarm state is stored, and it is determined whether or not the condition is satisfied by referring to the event information table. Judge An event determining means for outputting a save notification in the event of a save, an alarm status table for saving the alarm items stored in the time-series table with the current time as the save time, and a time-series when receiving the save notification from the event determiner. Alarm status storage means for storing the alarm items stored in the table in the alarm status table; alarm status information indicating means for selecting and displaying on the display means the alarm items for each storage time stored in the alarm status table; An alarm display device characterized by having a configuration described above, wherein an alarm state that has occurred in the past can be referred to so that quick and accurate operation control can be performed.

According to a fifth aspect of the present invention, in the alarm display device according to the fourth aspect, the alarm state storing means is provided with an arbitrary storage specifying means for arbitrarily specifying and storing the current alarm item. With this configuration, it is possible to arbitrarily select and store the correspondence of the alarm state generated by this configuration, and when the same alarm is newly generated, refer to the corresponding correspondence, and prompt and accurate operation control is performed. It is something that can be done.

According to a sixth aspect of the present invention, there is provided a state quantity calculating section for performing a predetermined calculation such as an average value or a rate of change on the state quantities at various measurement points and outputting the result as a calculated state quantity. By comparing the state quantity or the calculated state quantity with the previously stored alarm limit value, it is determined whether or not the actual measurement point of the state quantity or the calculation point of the calculated state quantity is in the alarm state. If it is determined that there is an alarm, an alarm determination unit that stores the result as an alarm item in a time-series table, and a display unit that includes an alarm display instruction unit that causes the display unit to display the contents of the time-series table. In the display device, an alarm history table for storing the alarm occurrence and alarm return time of the actual measurement point or the operation point, and an alarm history storage unit for judging the alarm occurrence and alarm return of the actual measurement point or the operation point and saving the alarm history table. Has An alarm display device characterized in that the contents stored in the alarm history table are displayed on the display means by this configuration, so that it is easy to confirm the effect of the operation and the like, and quick and accurate operation control is performed. It is something that can be done.

The invention according to claim 7 is the invention according to claims 1 to 6
5. The alarm display device according to claim 1, wherein at least one of the contents stored in the time series table, the priority order table or the deviation order table, the history table, and the alarm determination reference table is displayed on the display means. It is characterized by providing a display content switching means for switching whether or not to display the information. With this configuration, it is possible to display information as needed and to perform quick and accurate operation control.

[0042]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of an alarm display device 1 according to an embodiment of the present invention.

The alarm display device 1 includes a display section 34 for displaying various information, a state quantity input section 5 for taking in a state quantity of the plant 2, a state quantity calculation section 6 for calculating a calculated state quantity of the plant 2, a plant 2 is an alarm judging section 9 for judging whether or not an alarm state is present; a priority judging section 13 for rearranging and storing alarm states according to a preset priority; and an alarm degree judging section for judging the degree of alarm. 17. When displaying the information determined by the alarm determination unit 9 based on the calculation state quantity on the display unit 34,
A state quantity display instructing section 21 for simultaneously displaying the state quantity, an event section 22 for determining whether or not an event condition stored in advance is satisfied, and a history for saving an alarm history and displaying it on the display section 34 as appropriate. It has a management unit 30 and the like.

The state quantity calculation unit 6 includes a calculation information table 7 storing state quantity calculation information for calculating the calculation state quantity of the plant 2, an average value of the state quantity by referring to the state quantity calculation information. State amount calculating means 8 for performing a predetermined calculation described later
And the like.

The alarm judging unit 9 judges whether the state quantity is in the alarm state or not. The alarm judgment reference table 10 stores the alarm limit value as a reference when the state quantity is in the alarm state. Alarm determining means 11 for determining whether there is
It is composed of a time series table 12 for storing the results of the alarm judging means 11 in a time series.

The priority judging unit 13 includes a priority table 14 for storing priority information for preset measurement points,
Priority determining means 15 for determining the priority of an alarm item stored in the time-series table 12 based on the priority information stored in the priority table 14;
And a priority order table 16 for storing the judgment results.

The alarm degree judging section 17 includes a deviation degree table 18 in which deviation degree judgment information is stored in advance, a deviation degree judging means 19 for judging a deviation degree based on the deviation degree judging information, and a deviation degree judging means 19. It is composed of a deviation degree order table 20 and the like which store the judgment results.

The event section 22 includes an event information table 23 in which event conditions are stored in advance, and an event determining means 2 for determining whether the event conditions are satisfied.
4. Alarm state storage means 27 for storing the contents of the time series table 12 and the current time in the alarm state table 28, and alarm state storage means 27 for storing the alarm state at an arbitrary timing.
, And saves the information in the alarm state table 28, and displays the contents stored in the alarm state table 28 at each save time, and displays the alarm state at the save time selected by the operator. It comprises an alarm state instruction means 29 for reading information such as state quantities and weighing points from the alarm state table 28 and outputting it to the display unit 34.

The history management unit 30 reads information on the alarm status from the history table 32 and the time series table 12 in which the alarm status change information is stored, and searches for a weighing point whose status has changed from the alarm status. If there is a corresponding weighing point, the alarm state change information is stored in the history table 32.
History storage means 31 and history table 32 stored in the
The history display instructing means 33 for outputting the alarm history stored in the display unit 34 to the display unit 34 and the like.

The display unit 34 includes a display unit 36 for displaying various information, an alarm display instruction unit 35 for displaying various information on the display unit 36, and a display content switching unit 37 for switching the content displayed on the display unit 34. And the like.

The detailed configuration of each unit in such a configuration will be described while describing the processing procedure.

The state quantity calculation unit 6 reads the state quantity calculation information for calculating the calculation state quantity which is a pseudo state of the plant 2 stored in the calculation information table 7 and calculates the calculation state of the corresponding weighing point. Calculate the quantity.

The alarm judging means 11 compares the state quantity or the calculated state quantity with the alarm limit value stored in the alarm judgment reference table 10 to judge whether the corresponding weighing point is in the alarm state. I do.

When the result of the determination is that the state is an alarm state, the information is stored in the time-series table 12 together with the information of the measurement points in a time-series manner.

FIG. 2 is a diagram showing the contents of the alarm items stored in the time-series table 12, in which the alarm items are stored in the order of the alarm occurrence time, and the alarm occurrence time is newer in the drawing.

The alarm items stored in the time-series table 12 as described above are displayed on the display means 36 together with the state quantity by the alarm display instruction means 35, and an alarm is notified.

If the state quantity is a calculated state quantity, the state quantity display instructing unit 21 retrieves the actually measured state quantity used for the calculation, and stores the result in the information stored in the time-series table 12. At the same time, an alarm is displayed on the display means 36.

The detailed configuration of the state quantity display instructing section 21 will be described with reference to the flowchart shown in FIG.

First, the state quantity display instructing section 21 reads all alarm items stored in the time series table 12 (step SA1), and determines whether or not there is a new alarm item in the alarm items. (Step SA2).

At this time, when it is determined that there is a new alarm item, it is determined whether or not the new alarm item is the calculated state quantity calculated by the state quantity calculator 6 (step SA3).

If it is determined that the calculation state quantity is present, the calculation point of the corresponding calculation state quantity is read from the calculation information table 7 (step SA4).

FIG. 4 is an explanatory diagram of the calculation information table 7.
The calculation type, calculation point, weighing point, actual measurement point of the state quantity used as a basis for calculating the calculation state quantity, and the like are stored for each calculation state quantity.

Next, the current state quantity at the actual measurement point is input (step SA5), and information such as alarm items of the actual measurement point is displayed on the display means 36 (step SA6).

FIG. 5 is an explanatory view of a display screen showing an alarm state displayed on the display means 36 in this manner.
Calculated state quantity YYY of calculation point T083 calculated at hour 28
YYYYY is -2.0, which means that the alarm limit value is -1.0 or less.

At this time, the calculation state quantity at the calculation point T083 is calculated by the difference between the measurement state quantities at the measurement points T085 and T084, and the measurement state quantity at the measurement point T085 is 5.0. The measured state quantity is 7.0.

As described above, when the calculated state quantity is in the alarm state, the actually measured state quantity and its measured point are displayed in addition to the calculated state quantity, so that the measured state quantity at the measured point T084 is abnormal. For this reason, it is possible to easily determine that the calculation state quantity has entered an alarm state or the like.

When such a process is completed, the process enters a standby state until the next alarm is generated in step SA7.

Next, the processing procedure in the priority judgment section 13 will be described with reference to the flowchart shown in FIG. First, an alarm item is read from the time series table 12 into the priority determination means 15 (step SB1).

Then, it is determined whether or not the read alarm item has changed (step SB2). If there is a change, the process proceeds to step SB3, and if there is no change, the process proceeds to step SB8.

If it is determined that there is a change in the alarm item and the process proceeds to step SB3, it is determined whether or not there is a new alarm item in the time series table 12. Proceeds to step SB4, and if there is no corresponding new alarm item, proceeds to step SB8.

Step SB4 when a new alarm item is detected
If the process has proceeded to (2), the priority of the weighing point is read from the priority table 14 to the priority determining means 15, and the priority of the new alarm item is determined and rearranged. In the priority table 14, for example, the priority for each measurement point is stored as shown in FIG. For example, the weighing point A001 has a priority of 1 and the highest priority.

Then, the information of the alarm item is added to the priority table 14 together with the priority and stored (step SB).
5). FIG. 8 is an explanatory diagram of the priority table 14, in which the weighing points in the alarm state exceeding the alarm limit value, the alarm occurrence time, and the alarm limit value are stored in order of priority. In this case, the higher the priority, the higher the priority.

Next, it is determined whether there is an alarm item deleted from the time series table 12 (step SB).
6). The presence of the deleted alarm item means that the alarm condition at the weighing point has been eliminated.

At this time, if there is a deleted alarm item, the process proceeds to step SB7, and if there is no corresponding item, the process proceeds to step SB8. When the process proceeds to step SB7, the corresponding alarm item is deleted from the priority order table 16.

As described above, the contents of the priority order table 16 are updated, and the alarm display instructing means 35, for example, shown in FIG.
Are displayed on the display means 36 in order of priority as shown in FIG. FIG. 10 illustrates a display screen when the contents of the time-series table 12 are directly displayed on the display unit 36.
It is apparent that it is necessary to judge which alert items are important, and it is difficult to respond quickly.

When these processes are completed, the process stands by until the next alarm is issued (step SB8).

As described above, in the alarm display of the plant 2, the alarm is displayed in accordance with the priority order set in advance for each of the weighing points, so that even if an alarm state occurs at a plurality of weighing points, the alarm can be promptly performed. Therefore, appropriate measures can be taken and reliability and safety are improved.

Next, the detailed configuration of the alarm level judgment section 17 is shown in FIG.
1 will be described.

First, the deviation degree judging means 19 reads an alarm item having the contents shown in FIG. 2 from the time series table 12 (step SC1), and judges whether or not the state quantity is an analog quantity (step SC2). ). As an analog quantity,
There are a temperature, a flow rate, and the like, and examples of the digital quantity include opening and closing of a valve and power ON / OFF of a motor.

As a result, if it is an analog quantity, the flow proceeds to step SC3, and if it is a digital quantity, the flow proceeds to step SC6. When the process proceeds to step SC3, an alarm limit value is read from the alarm determination criterion table 10 (step SC3).

FIG. 12 shows the alarm judgment criterion table 10.
In the illustration of FIG. 5, the alarm limit value for each weighing point is stored.

Next, the deviation degree judgment information of the corresponding state quantity is read from the deviation degree table 18 (step SC4). FIG.
Is a diagram exemplifying deviation degree determination information for each weighing point in the state quantity stored in the deviation degree table 18, and shows a calculation range when performing a determination calculation as the deviation degree determination information.

Then, the alarm limit value deviation of the calculated state quantity is calculated according to the following formula: alarm limit value deviation = (| current value−alarm limit value |) / deviation degree determination information (step SC5).

Thereafter, it is determined whether or not such processing has been completed for all the alarm items stored in the time series table 12. If the calculation has not been completed, the process returns to step SC2. If the calculation has been completed, the process returns to step SC7. Proceed (Step S
C6).

In step SC7, the time series table 12
Are rearranged in the order of deviation degree for all of the alarm items stored in the table, and stored in the deviation degree order table 20.

FIG. 14 is an explanatory diagram of the deviation degree order table 20, in which the weighing points that have deviated from the alarm limit value and are in the alarm state, the alarm occurrence time, the alarm limit value, and the limit value deviation are listed in order of the deviation degree. Saved from.

Then, the process enters a standby state until the next alarm is generated (step SC8).

The contents of the deviation degree order table 20 are displayed on the display means 36 by the alarm display instructing means 35, for example, as shown in FIG.

As described above, in the alarm display of the plant 2, the alarm states are displayed in the order of the degree of deviation from the alarm limit value, so that an effective plant 2 alarm display in consideration of the degree of deviation from the alarm limit value is possible.

Therefore, for example, even if an alarm condition occurs for two valves, the higher the alarm level, the higher the alarm level is displayed, the quicker and more appropriate control operation becomes possible, and the reliability and safety are improved. The performance is improved.

Next, the detailed configuration of the event section 22 is shown in FIG.
This will be described according to the flowchart shown in FIG.

First, the event determining means 24 reads all event conditions from the event information table 23 (step SD1). The event condition is composed of the number of event conditions and each event establishment condition constituted by AND / OR logic as shown in FIG.

Then, it is determined whether or not any of the event conditions has changed from the unsatisfied state to the satisfied state (step SD2). If any of the event conditions has changed to the satisfied state, the process proceeds to step SD3. If not, the process proceeds to Step SD4.

There is something that has changed to the established state, and step S
When the process proceeds to D3, the event determination unit 24 notifies the alarm status storage unit 27 that the contents of the time series table 12 are to be stored.

Then, the process waits until the next event occurs (step SD4).

On the other hand, the processing procedure after the notification of the storage to the alarm state storage means 27 is performed according to the flowcharts shown in FIGS.

First, the alarm state storing means 27 determines whether or not a notification has been received from the event determining means 24 to store the contents of the time series table 12 (step SE).
1) If the storage notification has been received, the process proceeds to step SE2; otherwise, the process proceeds to step SE5.

When the operation proceeds to step SE2, the alarm items in the time series table 12 are read, and the current time is set as the alarm state storage time together with the alarm items.
8 (step SE2 to step SE4).

FIG. 19 is an explanatory diagram of the alarm status table 28, in which the number of alarm statuses to be stored, the alarm status storage time and the alarm items are paired, and the corresponding numbers are stored.

Then, it waits until the next save notification is received (step SE5).

The information stored in the alarm state table 28 is displayed on the display means 36 from the alarm state instruction means 29. The procedure at that time is shown in FIG.

That is, the alarm status instructing means 29 displays the alarm status storage time stored in the alarm status table 28 (step SF1), and the operator instructs which of them is to be displayed (step SF1). SF2).

Thereafter, the display means 36 displays the selected alarm item.
(Step SF3).

As described above, the alarm state at the time of occurrence of an event is stored, and the alarm state storage time is searched for and displayed later as a key, so that the present plant state can be compared with the same alarm state in the past. The display can be performed, and an effective plant alarm can be displayed.

For example, if an alarm is generated when the plant is started, if the state at the time of starting the plant can be referred to, it is possible to respond to the alarm smoothly and to start the plant. Can be easily performed.

That is, when three alarms are generated at the time of starting the plant and three alarms are generated at the same place at the time of the previous start, the start and the response according to the previous procedure may be performed. Can be started normally.

On the other hand, if the number of the current alarm is two more than the previous one, it is only necessary to start while paying attention to the portion where the number of the alarms is larger, so that the normal start can be performed relatively easily while reducing the monitoring burden. Become.

In the above description, the event judging means 2
4, the storage notification is sent to the alarm status storage means 27 only when the event condition set in advance is satisfied. However, the present invention is not limited to this, and the status at that time can be arbitrarily determined by the plant operator. It is also possible to make it to be stored.

In such a case, the arbitrary storage designating means 2
6, a save instruction is issued in accordance with the flowchart shown in FIG.

First, the operator or the like inputs an instruction to save an alarm state to the arbitrary save designating means 26 (step SG).
1).

The arbitrary storage designating means 26 constantly monitors whether or not an alarm state storage instruction has been input (step S).
G2) If an instruction to save the alarm state is input, the alarm state storage unit 27 is notified to save the alarm items in the time series table 12 (step SG3).

The processing procedure after the alarm status storage means 27 receives the notification follows the above-described procedure. Then, it waits until the next alarm state saving instruction is issued (step SG4).

As described above, by storing the plant state at the time when the alarm is generated, when the new alarm is generated, the stored information can be referred to, so that the stored information can be referred to quickly.
In addition, it is possible to take appropriate measures, and it is possible to improve safety and reliability.

Further, by saving the alarm status at an arbitrary timing, and later searching and displaying using the alarm status storage time as a key, it is easy to confirm the alarm status at a timing when it is difficult to create the event conditions of the plant. Thus, convenience is improved, and safety and reliability can be improved.

Next, the detailed configuration of the history management unit 30 is shown in FIG.
This will be described according to the flowchart shown in FIG.

First, the history management unit 30 reads an alarm item in the time series table 12 (step SH1), and judges whether or not this alarm item has changed (step SH).
2).

At this time, if it is determined that there is a change, it is determined whether or not there is a new alarm item in the time series table 12 (step SH3).

When it is determined that there is a new alarm item, the weighing point and the alarm occurrence time of the new alarm item are additionally registered in the history table 32 (step SH4).

FIG. 23 is an explanatory diagram of the history table 32.
The alarm generation time and the alarm recovery time are stored for all the weighing points in the alarm state. It should be noted that the alarm return time is not stored for the weighing point that is still in the alarm state (during alarm).

Next, it is determined whether there is any alarm item deleted from the time series table 12 (step SH5).
This means that the weighing point has returned from the alarm state.

At this time, if it is determined that there is a deleted alarm item, the current time is stored as the alarm return time of the corresponding weighing point in the history table 32 (step SH6).

FIG. 24 is an explanatory diagram of an alarm history display screen when the contents of the history table 32 are displayed on the display means 36 by the history display instruction means 33.

Thereafter, the system is in a standby state until the next alarm is generated (step SH7).

By displaying the alarm state of the weighing point and the return state thereof in this way, it becomes easy to monitor the alarm state with respect to the time change of the plant 2.

Next, the detailed configuration of the display content switching means 37 will be described with reference to the flowchart shown in FIG.

First, the display content switching means 37 is instructed to select which of the time series alarm display screen, the priority order alarm display screen and the deviation degree alarm display screen is displayed on the display means 36 (step SJ1). .

Then, it is determined whether or not the display instruction is a priority order alarm display (step SJ2). If the display instruction is a priority order alarm display, the contents of the priority order table 16 are displayed as an alarm. The alarm display instruction means 35 is notified (step SJ3).

On the other hand, if it is determined in step SJ2 that the display selection instruction is not a priority order alarm display, it is determined whether or not the display is a deviation order alarm display (step SJ4). Notifies the warning display instructing means 35 that the contents of the deviation degree order table 20 are to be displayed as an alarm (step SJ5).

If the display selection instruction is not the alarm display in the order of deviation in the judgment at step SJ4, the alarm display instruction means 35 is notified that the contents of the time series table 12 are to be displayed as an alarm (step SJ6).

Then, the process stands by until the next alarm display switching is performed (step SJ7).

In the above description, the display content switching means 3
The case has been described where 7 designates which of the time-series alarm display screen, the priority order alarm display screen and the deviation order alarm display screen is to be displayed on the display means 36, but the present invention is not limited to this. Instead, for example, the display content switching means 37 also has the functions of the state quantity display instruction unit 21, the alarm status instruction means 29, the history display instruction means 33, and the like. Obviously, you may do so.

As described above, the alarm state of the weighing point where the alarm state has occurred can be displayed on demand, so that an effective alarm display of the plant 2 can be performed, and promptly and
Appropriate measures can be taken to improve safety and reliability.

[0133]

As described above, according to the present invention,
Since the priority determination unit is provided, the alarm at the weighing point with high importance is displayed preferentially, so that quick and accurate operation control can be performed, thereby improving the safety and reliability of the plant. .

Further, since the alarm level judgment section is provided, the alarm at the weighing point having a high degree of urgency is displayed preferentially, so that quick and accurate operation control can be performed, thereby improving the safety and safety of the plant. Reliability is improved.

Further, since the state quantity display instructing section is provided, it is possible to simultaneously display the information such as the state quantity used in the calculation of the calculation state quantity, thereby enabling quick and accurate operation control. Thus, the safety and reliability of the plant are improved.

Further, since the event section is provided, it is possible to refer to an alarm state that has occurred in the past, and it is possible to perform quick and accurate operation control, thereby improving the safety and reliability of the plant.

Further, since the history management unit is provided, the alarm state can be easily determined, the effect of the operation can be smoothly confirmed, and the operation can be quickly and accurately controlled, so that the plant can be controlled accurately. Safety and reliability are improved.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of alarm display means applied to the description of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a time series table.

FIG. 3 is a flowchart showing processing contents of a state quantity display instruction unit.

FIG. 4 is an explanatory diagram of a calculation information table.

FIG. 5 is an explanatory diagram of display contents by a state quantity display instruction unit.

FIG. 6 is a flowchart illustrating processing performed by a priority determination unit.

FIG. 7 is an explanatory diagram of a priority table.

FIG. 8 is an explanatory diagram of a priority order table.

FIG. 9 is an explanatory diagram of a priority order alarm display screen.

FIG. 10 is an explanatory diagram of a time-series alarm display screen.

FIG. 11 is a flowchart showing the processing contents of an alarm level determination unit.

FIG. 12 is an explanatory diagram of an alarm judgment criterion table.

FIG. 13 is an explanatory diagram of a deviation degree table.

FIG. 14 is an explanatory diagram of a deviation degree order table.

FIG. 15 is an explanatory diagram of a departure degree order alarm display screen.

FIG. 16 is a flowchart showing the processing contents of an event determination unit.

FIG. 17 is an explanatory diagram of an event information table.

FIG. 18 is a flowchart showing processing contents of an alarm state storage unit.

FIG. 19 is an explanatory diagram of an alarm status table.

FIG. 20 is a flowchart showing processing contents of an alarm state instruction means.

FIG. 21 is a flowchart showing processing contents of an arbitrary storage designating unit.

FIG. 22 is a flowchart showing the processing contents of an alarm history storage unit.

FIG. 23 is an explanatory diagram of a history table.

FIG. 24 is an explanatory diagram of an alarm history display screen.

FIG. 25 is a flowchart showing the processing content of a display content switching means.

FIG. 26 is a schematic configuration diagram of alarm display means applied to the description of the conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Alarm display apparatus 2 Plant 5 State quantity input part 6 State quantity calculation part 7 Calculation information table 8 State quantity calculation means 9 Alarm judgment part 10 Alarm judgment reference table 11 Alarm judgment means 12 Time series table 13 Priority judgment part 14 Priority Table 15 Priority judgment means 16 Priority order table 17 Alarm degree judgment unit 18 Deviation degree table 19 Deviation degree judgment means 20 Deviation degree order table 21 State quantity display instruction unit 22 Event part 23 Event information table 24 Event judgment means 26 Arbitrary storage Designation means 27 Alarm status storage means 28 Alarm status table 29 Alarm status indication means 30 History management unit 31 Alarm history storage means 32 History table 33 History display instruction means 34 Display unit 35 Alarm display instruction means 36 Display means 37 Display content switching means

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tadashi Ishihara 991 Anada-cho, Seto-shi, Aichi Prefecture Inside the Toshiba Aichi Plant (72) Inventor Soji Kakimoto 991 Anada-cho, Seto-shi, Aichi Prefecture Inside the Aichi Plant Toshiba Corporation (72) Inventor Masao Iwasaki 991, Anata-cho, Seto-shi, Aichi Prefecture Toshiba Corporation Aichi Factory (72) Inventor Hidekazu Nimura 2--24-24 Harumi-cho, Fuchu-shi, Tokyo Toshiba System Technology Corporation (72) Inventor Tetsuya Okada 1 Toshiba-cho, Fuchu-shi, Tokyo F-term in Fuchu Works, Toshiba Corporation (reference) 5H223 AA01 BB02 CC01 DD03 EE30 FF01

Claims (7)

[Claims] 1. For state quantities at various measuring points,
A predetermined amount calculation such as an average value or a change rate is performed, and a state amount calculation unit that outputs the calculated value as a calculated state amount is compared with the state amount or the calculated state amount and a previously stored alarm limit value. Then, it is determined whether the actual measurement point of the state quantity or the calculation point of the calculation state quantity is in the alarm state, and when it is determined that the state is in the alarm state, the result is stored in the time-series table as an alarm item. An alarm display device comprising: an alarm determination unit; and a display unit having an alarm display instruction unit for displaying the contents of the time series table on a display unit. The priority at the actual measurement point or the calculation point in a plant is prioritized in advance. A priority table stored as a degree, priority determining means for determining the priority of the alarm information stored in the time-series table based on the priority, and rearranging the priority in priority order; It stores the result of changing the alarm display device characterized by having a priority decision unit and a priority order table for displaying on the display unit. 2. For state quantities at various measurement points,
A predetermined amount calculation such as an average value or a change rate is performed, and a state amount calculation unit that outputs the calculated value as a calculated state amount is compared with the state amount or the calculated state amount and a previously stored alarm limit value. Then, it is determined whether the actual measurement point of the state quantity or the calculation point of the calculation state quantity is in the alarm state, and when it is determined that the state is in the alarm state, the result is stored in the time-series table as an alarm item. In an alarm display device having an alarm determination unit and a display unit having an alarm display instruction unit for displaying the contents of the time series table on a display unit, a deviation degree of the alarm item from the alarm limit value is determined. A deviation degree judging means for rearranging the deviation degree in the order of the deviation degree, a deviation degree table storing judgment information for judging the deviation degree by the deviation degree judging means, and a deviation degree order determined by the deviation degree judging means. Store the alarm items Te, alarm display device characterized by having an alarm level determination unit and a deviance sequence table to be displayed on the display unit. 3. For state quantities at various weighing points,
An operation information table storing state amount operation information for performing operation of a predetermined operation state amount such as an average value or a change rate is provided, and the operation state amount is calculated and output based on the state amount operation information. A state quantity calculation unit compares the state quantity or the calculation state quantity with a previously stored alarm limit value, and determines whether an actual measurement point of the state quantity or a calculation point of the calculation state quantity is in an alarm state. When an alarm condition is determined, an alarm determination unit that stores the result in a time-series table as an alarm item, and an alarm display instruction unit that displays the content of the time-series table on a display unit. An alarm display device having a display unit for searching for an actual measurement point of the state quantity used for the operation state quantity with reference to the operation information table, and a current state amount at the actual measurement point together with the operation state quantity. Display on the display unit An alarm display device comprising a state quantity display instruction unit for causing the alarm to be displayed. 4. For state quantities at various measurement points,
A predetermined amount calculation such as an average value or a change rate is performed, and a state amount calculation unit that outputs the calculated value as a calculated state amount is compared with the state amount or the calculated state amount and a previously stored alarm limit value. Then, it is determined whether the actual measurement point of the state quantity or the calculation point of the calculation state quantity is in the alarm state, and when it is determined that the state is in the alarm state, the result is stored in the time-series table as an alarm item. In an alarm display device having an alarm determination unit and a display unit having an alarm display instruction unit for displaying the contents of the time series table on a display unit, conditions for saving a current alarm state are stored. An event information table; an event determination unit that determines whether the condition is satisfied by referring to the event information table, and outputs a save notification when it is determined that the condition is satisfied; An alarm status table that stores alarm items stored in a time-series table with time as a storage time, and an alarm item stored in the time-series table when the storage notification is received from the event determination unit. An alarm unit comprising: an alarm status storage unit to be stored; and an alarm status information instructing unit to select an alarm item for each storage time stored in the alarm status table and to display the selected alarm item on the display unit. Alarm display device. 5. The alarm display device according to claim 4, wherein said alarm state storage means includes an arbitrary storage specifying means for arbitrarily specifying and storing a current alarm item. 6. For state quantities at various measurement points,
A predetermined amount calculation such as an average value or a change rate is performed, and a state amount calculation unit that outputs the calculated value as a calculated state amount is compared with the state amount or the calculated state amount and a previously stored alarm limit value. Then, it is determined whether the actual measurement point of the state quantity or the calculation point of the calculation state quantity is in the alarm state, and when it is determined that the state is in the alarm state, the result is stored in the time-series table as an alarm item. An alarm display device having an alarm determination unit and a display unit having an alarm display instruction unit for displaying the content of the time series table on a display unit, wherein an alarm generation and an alarm return time of the actual measurement point or the calculation point are stored. An alarm history table, and an alarm history storage unit comprising: an alarm history storage unit for determining whether an alarm has occurred and returning from an actual measurement point or a calculation point and storing the alarm history table in the alarm history table. Warning display device is characterized in that so as to be displayed on the display means the contents were. 7. Which of the contents stored in at least the time-series table, the priority order table or the deviation order table, the history table, and the alarm judgment reference table is displayed on the display means. 2. A display content switching means for switching the display mode.
7. The alarm display device according to any one of claims 6 to 6.