JP2005011170A - How to check process event occurrence history - Google Patents

Abstract

[PROBLEMS] To facilitate comparative examination of both measured values and events.
A monitoring device 3 generates a first window for displaying a list of details of history of measured values in response to an operator's display request, and displays a list of details of event occurrence history in response to a display request. Means for creating the second window, and means for simultaneously displaying the created first window and second window on the operation monitoring screen.
[Selection] Figure 1

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a process monitoring system for monitoring an operation state of a plant or the like, and more particularly to a confirmation method for displaying a process event occurrence history in an operation monitoring screen displayed by a monitoring device of the process monitoring system.
[0002]
[Prior art]
Conventionally, in order to monitor the operating state of the plant, etc., a trend display that displays the history of the measured values input from the measuring instrument of the plant has been performed, and an event display that notifies the occurrence of events such as process alarms has been performed Has been done. These measurement values and events are often important and closely related, and in order to investigate the cause of an event such as a process alarm, it is necessary to match the event with the measurement value. However, this matching work requires complicated work such as examining the time of occurrence of an event and displaying a trend value of the measurement value corresponding to this time of occurrence. Accordingly, the applicant has proposed a process event information display method for simultaneously displaying event information on the trend screen (see, for example, Patent Document 1). The applicant has not yet found prior art documents related to the present invention by the time of filing other than the prior art documents specified by the prior art document information described in this specification.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-134154
[Problems to be solved by the invention]
According to the display method proposed in Patent Document 1, it is possible to confirm an event occurrence state with an icon while displaying a trend, and it is also possible to confirm event detailed data on an event sheet. However, even with this display method, detailed examination work for examining the cause of the occurrence of an event, that is, the work of matching the details of both the measurement value history and the event occurrence history is not easy, and there is a measurement value history. After checking on the screen, there is a problem that a complicated work such as checking the details of the event occurrence history on another screen becomes necessary.
[0005]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a process event occurrence history confirmation method capable of easily comparing and examining details of both measured values and events.
[0006]
[Means for Solving the Problems]
The present invention displays a trend that is a history of measurement values on the operation monitoring screen, and when an event occurs within a display target period that is a time region for which the trend is to be displayed, an icon representing the content of the event is displayed on the operation monitoring screen. In the method for confirming a process event occurrence history to be displayed at a time position where the event has occurred on a trend, a first window for creating a first window for displaying a list of details of the measured value history in response to an operator display request is generated. A window creation procedure, a second window creation procedure for creating a second window for displaying a list of details of the event occurrence history in response to the display request, the created first window and the second window, Is displayed on the operation monitoring screen at the same time.
Further, in one configuration example of the process event occurrence history checking method according to the present invention, the first window creation procedure and the second window creation procedure are emphasized by data at a time specified by an operator in the display target period. The first window and the second window may be created so as to be displayed.
In the configuration example of the process event occurrence history check method according to the present invention, the first window creating procedure creates the first window by thinning out the data of the display target period, and the second window creating procedure. In this window creation procedure, the second window may be created using data in a time region near the time designated by the operator in the display target period.
Further, in one configuration example of the process event occurrence history check method of the present invention, the second window creation procedure inserts blank data at a time in the vicinity time region of the specified time when no event has occurred. Then, the second window may be created.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram of a process monitoring system to which a process event occurrence history checking method according to an embodiment of the present invention is applied.
The process monitoring system controls field devices (not shown) (for example, switches, valves, pumps, pressure gauges, flow meters, thermometers, etc.) installed in the plant and the like, and from the field devices, for example, pressure, liquid amount, temperature, etc. A controller 1 that acquires measurement values (process data), a server device 2 that collects measurement values from the controller 1, a command to the controller 1 and the server device 2 according to an operator's instruction, and editing of a plant operation monitoring screen A monitoring device 3 to be created, an input device 4 such as a keyboard and a mouse for driving operation and parameter setting, and a display device 5 that receives image data from the monitoring device 3 and displays an operation monitoring screen.
[0008]
FIG. 2 is a block diagram showing the configuration of the server device 2 and the monitoring device 3.
The server apparatus 2 includes a data collection unit 21 that collects field device measurement values from the controller 1 and a data storage unit 22 that stores the collected measurement values.
On the other hand, the monitoring device 3 creates a data request receiving unit 31 that receives an operator's request through the input device 4, a data storage unit 32 that acquires and stores data from the data storage unit 22 of the server device 2, and an operation monitoring screen. And a data display unit 34 for causing the display device 5 to display the operation monitoring screen created by the calculation unit 33.
[0009]
The data storage unit 32 constitutes means for collecting data within a display target period, which is a time region to be displayed as a trend, and the calculation unit 33 sets the display target period according to an operator's request. And a determination means for determining the allocation period that each icon is responsible for within the set display target period according to the time span that is the length of the display target period, and a plot data window that displays a list of details of the measured value history ( A first window creating means for creating a first window) and a second window creating means for creating an alarm / event details window (second window) for displaying a list of details of event occurrence history. The data display unit 34 and the display device 5 constitute display means for displaying an operation monitoring screen.
[0010]
The configurations of the server device 2 and the monitoring device 3 can be realized by a computer having an arithmetic device, a storage device, and an interface, and a program for controlling these hardware resources, respectively. In the present embodiment, the server device 2 and the monitoring device 3 are provided separately, but they may be integrated.
[0011]
Hereinafter, the operation of the process monitoring system of this embodiment will be described. FIG. 3 is a flowchart showing the operation of the monitoring device 3.
Measurement values representing the state of the plant are collected from the controller 1 by the data collection unit 21 of the server device 2 at regular intervals, for example, and stored in the data storage unit 22. In addition, when an event such as a process alarm occurs, the data collection unit 21 stores data of the event in the data storage unit 22.
[0012]
When receiving a request from the operator through the input device 4, the data request receiving unit 31 of the monitoring device 3 passes this request to the data storage unit 32.
The data storage unit 32 determines whether necessary data (measurement values and event data) has already been stored on the operation monitoring screen corresponding to the operator's request (step S1 in FIG. 3), and stores the necessary data. In this case, this data and the operator's request are sent to the calculation unit 33. In addition, when the data storage unit 32 does not store necessary data on the operation monitoring screen, the data storage unit 32 acquires and stores necessary data from the data storage unit 22 of the server device 2, and acquires the acquired data and the operator's request. Is sent to the calculation unit 33 (step S2).
[0013]
Next, the computing unit 33 creates an operation monitoring screen corresponding to the operator's request based on the data passed from the data storage unit 32 and the operator's request, and displays the image data of the created operation monitoring screen as data. It outputs to the part 34 (step S3).
By outputting the image data to the display device 5 through the data display unit 34, for example, an operation monitoring screen 100 as shown in FIG. 4 is displayed on the display device 5 (step S4).
[0014]
The operation monitoring screen 100 displays a trend 101 that represents the history of each measurement value in a graph. The horizontal axis of the trend 101 is time, and the vertical axis is a scale of measured values. In the example of FIG. 4, the measured values P0.P in the display target period from 11:29:55 on March 13, 2003 to 12:29:55. PV, P1. The PV history is displayed. That is, when the operator requests display of the operation monitoring screen by designating a display target period from 11:29:55 on March 13, 2003 to 12:29:55, this display is performed. Data for the target period is acquired from the data storage unit 22 of the server device 2, and the calculation unit 33 creates the operation monitoring screen 100.
[0015]
In addition, when an event occurs within the designated display target period, that is, when event data exists in the data passed from the data storage unit 32, the calculation unit 33 displays an icon representing the event content on the trend. The operation monitoring screen 100 is created so as to be displayed at the time position where the event occurred. In this way, an icon representing the occurrence of the event is displayed on the trend 101.
[0016]
In the example of FIG. 4, it can be seen that events such as a process alarm, a system alarm, a system event, an operator change, and a message have occurred. That is, the icon 102 indicates that a process alarm has occurred such as a certain measured value exceeds a predetermined threshold value, and the icon 103 indicates that a system alarm has been generated to notify a system abnormality. An icon 104 indicates that a system event for reporting the system status has occurred, and an icon 105 indicates an operator change history indicating an operation history of the operator for the process monitoring system (for example, a target value change for an arbitrary control loop). Indicates that an event has occurred and the icon 106 indicates that a message preset by the operator to be displayed when a certain state in the sequence (program) is reached or when a certain phase is reached. It shows what happened on arrival. For example, when a process starts, the message “XXX has started” is displayed. When the process is completed, “XXX has ended.” It is common to display "Please start XXX" when you need to use. As events, there are sequence events and user-defined events other than those shown in FIG. A sequence event is an event that reports the state of a sequence (program) (for example, reports that the sequence has stopped if the sequence stops for some reason), and a user-defined event has a certain measurement value preset. This event is to display a message set by the operator when the threshold value is exceeded.
[0017]
The allocation period that each icon is responsible for within the display target period is determined according to the time span that is the length of the display target period. That is, since the size of the operation monitoring screen (trend 101) and the size of each icon are known values, when the time span is determined, the maximum number of icons that can be displayed in one line of the operation monitoring screen is determined. If the time span is divided by this maximum number, the allocation period assigned to one row of icons is determined. When an event occurs within a certain allocation period, the calculation unit 33 of the monitoring device 3 creates an operation monitoring screen so that an icon responsible for this allocation period is displayed at the position of the allocation period on the trend.
[0018]
Next, the operator can display a hairline cursor for designating a desired time position on the trend on the operation monitoring screen. When the monitoring device 3 receives a hairline cursor display request from the operator, the monitoring device 3 performs the same processing as in FIG. 3 and displays the operation monitoring screen 100a as shown in FIG. The position of the hairline cursor 107 displayed on the driving monitoring screen 100 a can be freely changed by the operator operating the input device 4.
[0019]
The computing unit 33 of the monitoring device 3 measures the measured values P0... P0. PV data is displayed at 108 on the operation monitoring screen 100a, and the measured values P1. PV data is displayed at 109 locations.
[0020]
Next, as shown in FIG. 6, the operator simultaneously displays a plot data window 110 that displays details of the measurement value history and an alarm / event details window 111 that displays details of the process event occurrence history as an operation monitoring screen. 100b can be displayed. When receiving the operator's display request through the input device 4, the monitoring device 3 performs the same processing as in FIG. 3 and displays the operation monitoring screen 100b.
[0021]
The plot data window 110 displays details of the measurement value history over the entire display target period (from 11:29:55 on March 13, 2003 to 12:29:55 in the example of FIG. 6). However, it is not necessary to display all the data for the display target period in detail, and the data collected by appropriately decimating from the entire display target period is sufficient. When all the data is displayed in detail, the number of lines in the plot data window 110 is large. Become.
[0022]
Therefore, the computing unit 33 of the monitoring device 3 creates the plot data window 110 using the measured values after thinning out the measured values for the display target period at appropriate time intervals. If the maximum number of lines of the plot data window 110 is determined in advance, it is possible to determine at what interval the measurement values for the display target period are thinned out from the maximum number of lines and the time span.
[0023]
On the other hand, in the process event occurrence history, since the information before and after the occurrence of the event is important, it is meaningless to display the data by thinning it out appropriately, and since there are a huge number of events in the entire display target period, Cannot be listed. Therefore, in the alarm / event details window 111, the details of the process event occurrence history are displayed only in the time region near the time designated by the operator using the hairline cursor 107. This time domain determination method will be described below. First, 200 blank lines are inserted into the alarm / event details window 111. The number of 200 lines is a fixed value determined empirically. Blank lines are inserted to represent a certain time interval. This fixed time interval is not a fixed value, and changes according to the occurrence state of the event displayed on the trend screen, as will be described below. Subsequently, the smallest event generation interval (excluding 0 seconds) displayed on the trend screen is determined as a time interval [second / line] represented by a blank line. The time interval [second / line] × 200 lines is the time area [seconds] displayed as a list. The reason for not fixing the time domain is that the number of event occurrence histories during that period cannot be predicted.
[0024]
The computing unit 33 of the monitoring device 3 acquires the event data only in the determined display target time region, and creates the alarm / event details window 111. At this time, the calculation unit 33 acquires from the database the event occurrence history in the time domain in which the position of the hairline cursor 107 is the start date / time or the end date / time. When the alarm / event details window 111 is displayed for the first time, the position of the hairline cursor 107 is unconditionally set as the start date and time. When updating a list that is already displayed, whether the hairline cursor 107 is the start date / time or the end date / time of the time region depends on the direction in which the position of the hairline cursor 107 is out of the list display region. The hairline cursor 107 becomes the start date and time when it deviates before the time area displayed so far, and becomes the end date and time when it deviates after that. Then, the calculation unit 33 inserts the acquired event occurrence history by replacing it with a blank line corresponding to the list occurrence date and time. Thus, a list of the vicinity of the hairline cursor 107 is displayed. Blank lines remain at times when no event occurs in the time area to be displayed. In the example of FIG. 6, blank lines are inserted at 11:58:13, 11:58:28, 11:58:47, and 11:59:12. Thus, by inserting blank data at a time when no event occurs, it becomes easy to visually grasp the relative positional relationship of the process event occurrence date and time.
[0025]
Further, the calculation unit 33 highlights the data at the time designated by the operator using the hairline cursor 107 as indicated by 112 and 113 in FIG. In the present embodiment, a bird's-eye view display is used in which the same type of event that has occurred within a certain allocation period is represented by one icon that is responsible for this allocation period. In the example of FIG. 6, at the time when the hairline cursor 107 is located. One process alarm icon 102 is displayed. On the other hand, when the alarm / event details window 111 is viewed, it can be seen that three process alarms including highlighted data are concentrated and the icon 102 represents the three process alarms.
[0026]
It goes without saying that the highlighted data changes according to the change of the designated time, that is, the movement of the hairline cursor 107. When the designated time is changed, the calculation unit 33 scrolls the plot data window 110 and the alarm / event details window 111 so that the data to be highlighted is located near the center of the window.
[0027]
Furthermore, when the designated time after the change is out of the time area to be displayed in the alarm / event details window 111, the calculation unit 33 newly determines a time area near the designated time after the change, Event data is acquired and the alarm / event details window 111 is updated.
[0028]
In addition, since a measured value is measured discretely, it may not be measured at the time designated by the operator using the hairline cursor 107. In such a case, data closest to the specified time is selected and highlighted.
When a plurality of types of measurement values are displayed in the trend, the calculation unit 33 displays a list of details of the history of measurement values previously selected by the operator from the plurality of types of measurement values in the plot data window 110. At the same time, details of the process event occurrence history related to the selected measurement value are displayed in a list on the alarm / event details window 111. As is apparent from the plot data window 110, in the example of FIG. The case where PV is selected is shown.
[0029]
【The invention's effect】
According to the present invention, the first window for displaying the details of the history of measurement values and the second window for displaying the details of the history of occurrence of events are created, and the created first window and second window are created. Since the window is simultaneously displayed on the operation monitoring screen, the operator can select a portion of interest on the trend and examine its detailed data. In addition, since both details of the measurement value history and the event occurrence history can be confirmed, both details can be compared. As a result, the present invention can contribute to operational improvement in the chemical process industry as one of the analysis tools for plant operation.
[0030]
Further, since the first window and the second window are created so that the data at the time designated by the operator in the display target period is highlighted, the operator can easily find the data at the time to be confirmed, It also makes it easier to check the phenomena that occurred around that time. As a result, the relationship between the measured value and the event can be confirmed immediately, and the cause of an alarm or the like can be analyzed more easily.
[0031]
In addition, the first window is created by thinning out the data for the display target period, and the second window is created using data in the time domain near the time specified by the operator in the display target period. Thus, it is possible to perform an appropriate display according to the usage of each of the first window and the second window.
[0032]
In addition, since the second window is created by inserting blank data at the time when the event does not occur in the vicinity time region of the specified time, the relative positional relationship of the process event occurrence date and time is visually It becomes easy to grasp.
[Brief description of the drawings]
FIG. 1 is a block diagram of a process monitoring system to which a process event occurrence history checking method according to an embodiment of the present invention is applied.
FIG. 2 is a block diagram showing a configuration of a server device and a monitoring device in the embodiment of the present invention.
FIG. 3 is a flowchart showing the operation of the monitoring device according to the embodiment of the present invention.
FIG. 4 is a diagram showing an example of an operation monitoring screen in the embodiment of the present invention.
FIG. 5 is a diagram showing another example of the operation monitoring screen in the embodiment of the present invention.
FIG. 6 is a diagram showing another example of the operation monitoring screen in the embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Controller, 2 ... Server apparatus, 3 ... Monitoring apparatus, 4 ... Input device, 5 ... Display apparatus, 21 ... Data collection part, 22 ... Data storage part, 31 ... Data request | requirement reception part, 32 ... Data storage part, 33 ... Calculation unit, 34 ... Data display unit.

Claims (4)

A trend that is a history of measured values is displayed on the operation monitoring screen, and when an event occurs within a display target period that is a time region that the trend is to be displayed, an icon representing the content of the event is displayed on the trend. In the confirmation method of process event occurrence history displayed at the time position where the event occurred,
A first window creating procedure for creating a first window for displaying a list of details of the history of measured values in response to an operator display request;
A second window creation procedure for creating a second window for displaying a list of details of the event occurrence history in response to the display request;
A method for confirming a process event occurrence history, comprising: a display procedure for simultaneously displaying the created first window and second window on the operation monitoring screen. In the confirmation method of the process event occurrence history according to claim 1,
In the first window creation procedure and the second window creation procedure, the first window and the second window are created so that data at a time specified by an operator in the display target period is highlighted. A method for confirming a process event occurrence history. In the confirmation method of the process event occurrence history according to claim 1,
The first window creation procedure creates the first window by thinning out the data of the display target period,
In the second window creation procedure, the second window is created using data in the vicinity time region of the time designated by the operator in the display target period, and the process event occurrence history check method is characterized. In the confirmation method of the process event occurrence history according to claim 3,
The second window creation procedure includes creating a second window by inserting blank data at a time when no event has occurred in a time zone near the specified time. Confirmation method.

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