PLANT MONITORING APPARATUS, PLANT MONITORING METHOD, AND PROGRAM

Abstract

To improve the convenience of plant monitoring.SOLUTION: A plant monitoring device 10 includes: an alarm output unit 23 that generates alarm information including a time and date of occurrence of an anomaly when the anomaly in a plant 1 is detected; an alarm screen processing unit 251 that displays an alarm screen on a display unit 19; and a graph screen processing unit 252 that displays a trend graph screen on the display unit 19. When a warning element displayed on the warning screen is drag-and-drop operated on the trend graph screen while the warning screen and the trend graph screen are displayed, the graph screen processing unit 252 displays, on the trend graph screen, a graph of input data of a predetermined period including the time and date specified by the operated warning element and displays, on the trend graph screen, an emphasis element for emphasizing the time and date.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a plant monitoring device, a plant monitoring method, and a program. [Background technology]

[0002] For example, a highly reliable and easily operable plant monitoring device is required for stable operation of a power plant, a thermal power plant, etc. When an abnormality is detected in such a plant monitoring device, it is necessary to promptly notify the operator of the occurrence of the abnormality by issuing an alarm.

[0003] For example, Patent Document 1 discloses a plant monitoring device that displays an alarm screen, which is a list of alarms, on a display device, and when a user selects any alarm on this alarm screen and presses a graph display button, causes a trend graph screen at the time the alarm occurred to be displayed on the display device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2016-115195 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the conventional method described in Patent Document 1, the user is required to perform two operations: selecting any one of the warnings on the warning screen, and then pressing the graph display button.

[0006] The present disclosure has been made in consideration of the above circumstances, and aims to provide a plant monitoring device, a plant monitoring method, and a program that can improve the convenience of plant monitoring. [Means for solving the problem]

[0007] In order to solve the above problems, the plant monitoring device of the present disclosure is To An abnormality has occurred Anomaly Occurrence Date and time At least one of the recovery dates and times when the plant recovered from an abnormality an alarm output unit that creates alarm information including the alarm element based on the alarm information, an alarm screen processing unit that displays an alarm screen including an alarm element based on the alarm information on a display unit, and a graph screen processing unit that displays a trend graph screen on the display unit, in which a time transition of input data related to a monitoring item of the plant is depicted as a graph, and the graph screen processing unit is configured to, when the alarm element displayed on the alarm screen is dragged and dropped onto the trend graph screen while the alarm screen and the trend graph screen are displayed on the display unit, identify the alarm element from the dragged and dropped alarm element. At least one of the date and time of occurrence of the abnormality and the date and time of recovery A graph of input data for a predetermined period including the above is displayed on the trend graph screen, and Anomaly Occurrence Date and time At least one of the return dates An emphasis element for emphasizing the trend graph is displayed on the trend graph screen. The graph screen processing unit adjusts a range of a time axis so that, when a plurality of the alarm elements are dragged and dropped on the trend graph screen from the alarm screen, at least one of each of the abnormality occurrence dates and times and each of the recovery dates and times specified from each of the plurality of the alarm elements is displayed on the trend graph screen. do.

[0008] The plant monitoring method of the present disclosure is To An abnormality has occurred Anomaly Occurrence Date and time At least one of the recovery dates and times when the plant recovered from an abnormality a step of displaying an alarm screen including an alarm element based on the alarm information on a display unit; a step of displaying a trend graph screen on the display unit in which a time transition of input data related to a monitoring item of the plant is depicted as a graph; and a step of identifying, when the alarm element displayed on the alarm screen is dragged and dropped onto the trend graph screen while the alarm screen and the trend graph screen are displayed on the display unit, the alarm element identified from the dragged and dropped alarm element. At least one of the date and time of occurrence of the abnormality and the date and time of recovery A graph of input data for a predetermined period including the above is displayed on the trend graph screen, and Anomaly Occurrence Date and time At least one of the return dates displaying an emphasis element on the trend graph screen for emphasizing the a step of adjusting a range of a time axis so that, when a plurality of the alarm elements are dragged and dropped onto the trend graph screen from the alarm screen, at least one of each of the abnormality occurrence dates and times and each of the recovery dates and times specified from each of the plurality of alarm elements is displayed on the trend graph screen; The computer executes the above.

[0009] The program disclosed herein causes a computer to function as the plant monitoring device. Effect of the Invention

[0010] The convenience of plant monitoring can be improved. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a diagram illustrating an example of a hardware configuration of a plant monitoring device according to an embodiment of the present disclosure. [Diagram 2] FIG. 2 is a functional block diagram illustrating an example of functions of a plant monitoring device according to an embodiment of the present disclosure. [Diagram 3] FIG. 13 is a diagram illustrating an example of a warning screen according to an embodiment of the present disclosure. [Figure 4] FIG. 13 is a diagram illustrating an example of a trend graph screen according to an embodiment of the present disclosure. [Diagram 5] 1A to 1C are diagrams for explaining an input operation of a plant monitoring device according to an embodiment of the present disclosure and a screen display associated with the input operation. [Figure 6] FIG. 13 is a diagram illustrating an example of a logic screen according to an embodiment of the present disclosure. [Figure 7] 1A to 1C are diagrams for explaining an input operation of a plant monitoring device according to an embodiment of the present disclosure and a screen display associated with the input operation. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of a plant monitoring device, a plant monitoring method, and a program according to the present disclosure will be described with reference to the drawings.

[0013] Fig. 1 is a diagram showing an example of a hardware configuration of a plant monitoring device 10 according to an embodiment of the present disclosure. As shown in Fig. 1, the plant monitoring device 10 includes, for example, a CPU (Central Processing Unit) 11, a main memory 12, a storage unit 13, an external interface 16, a communication interface 17, an input unit 18, and a display unit 19. These units are connected to each other directly or indirectly via a bus, and cooperate with each other to execute various processes.

[0014] The CPU 11 controls the entire plant monitoring device 10 using, for example, an OS (Operating System) stored in a memory unit 13 connected via a bus, and performs various processes by executing various programs stored in the memory unit 13.

[0015] The main memory 12 is composed of writable memories such as cache memory and RAM (Random Access Memory), and is used as a working area for reading out programs executed by the CPU 11 and writing data processed by the programs.

[0016] The memory unit 13 is, for example, a ROM (Read Only Memory), an HDD (Hard Disk Drive), an SSD (Solid State Drive), etc., and stores, for example, an OS such as Windows (registered trademark) for controlling the entire plant monitoring device 10, various device drivers for operating the hardware of peripheral devices, various programs (including various application software) for realizing various processes, and various data required to realize various processes.

[0017] The external interface 16 is an interface for connecting to an external device. Examples of the external device include an external monitor, a USB memory, an external HDD, etc. Although only one external interface is illustrated in the example shown in FIG. 1, multiple external interfaces may be provided.

[0018] The communication interface 17 functions as an interface for connecting to a network to communicate with other devices and for transmitting and receiving information. The input unit 18 is a user interface, such as a keyboard, a mouse, a touch panel, or the like, that allows the user to give instructions to the plant monitoring device 10. The display unit 19 has a display screen configured with, for example, an LCD (Liquid Crystal Display), an organic EL (Electro Luminescence), or the like, and displays the results of applications and the like executed by the plant monitoring device 10, and the like.

[0019] FIG. 2 is a functional block diagram showing an example of functions of the plant monitoring device 10 according to this embodiment.

[0020] A series of processes for realizing various functions described below is stored in the storage unit 13 in the form of a program (e.g., a plant monitoring program), for example, and the CPU 11 reads this program into the main memory 12 and executes information processing and arithmetic processing to realize various functions. Note that the program may be pre-installed in the storage unit 13, provided in a state stored in another computer-readable storage medium, or distributed via wired or wireless communication means. Examples of computer-readable storage media include magnetic disks, magneto-optical disks, CD-ROMs, DVD-ROMs, and semiconductor memories.

[0021] As shown in FIG. 2, the plant monitoring device 10 includes a data acquisition unit 21, a data storage unit 22, an alarm output unit 23, an alarm information storage unit 24, a monitoring screen processing unit 25, and the like.

[0022] The data acquiring unit 21 acquires input data that is data used for monitoring the plant 1. The "input data" includes measurement data such as temperature, pressure, flow rate, etc. measured by various sensors provided in the plant 1, various control amounts output from various control devices of the plant 1, and various other data required for monitoring the plant 1. The data acquiring unit 21 associates the acquired input data with information for identifying the input data (hereinafter referred to as a “monitoring item”) and time information when the input data was acquired, and stores the associated data in the data storage unit 22.

[0023] As a result, various input data acquired by the data acquisition unit 21 is stored in the data storage unit 22 in association with the monitoring item and time information. In this embodiment, a "monitoring item" includes ID information (tag) that is identification information of the monitoring item and the name of the monitoring item.

[0024] The alarm output unit 23 has a normal range for input data for all or some of the monitoring items, and detects an abnormality when the input data for a monitoring item is outside the normal range. When the alarm output unit 23 detects an abnormality, it creates alarm information related to the detected abnormality, stores the created alarm information in the alarm information storage unit 24, and outputs it to the monitoring screen processing unit 25.

[0025] In addition, when the input data of a monitoring item that was outside the normal range transitions into the normal range, the warning output unit 23 detects recovery from the abnormality. When the warning output unit 23 detects recovery from the abnormality, it creates warning information regarding the recovery, stores the created warning information in the warning information storage unit 24, and outputs it to the monitoring screen processing unit 25. The method of detecting an abnormality and recovery by the alarm output unit 23 is not limited to the above example, and any known method can be appropriately adopted.

[0026] The alarm information includes an alarm ID, information about a monitoring item, a plant status, and time information. Information about a monitoring item includes, for example, an ID of the monitoring item and a name of the monitoring item. Examples of the plant status include abnormality and recovery. Examples of time information include the date and time when the abnormality occurred and the date and time when the recovery was completed.

[0027] The monitoring screen processing unit 25 includes an alarm screen processing unit 251 , a graph screen processing unit 252 , and a logic screen processing unit 253 .

[0028] When the alarm screen processing unit 251 receives alarm information from the alarm output unit 23, it causes the display unit to display an alarm screen including alarm elements based on the alarm information. For example, the alarm screen processing unit 251 extracts all or part of the alarm information to create alarm elements, and causes the alarm screen to display the alarm elements. The alarm screen is, for example, an alarm summary, and is a screen on which alarm elements are displayed as a list. On the alarm screen, the alarm elements may be displayed in chronological order based on the date and time of abnormality or recovery.

[0029] An example of an alarm screen is shown in Fig. 3. As shown in Fig. 3, alarm elements K1 to K3 based on currently occurring alarm information are displayed on the alarm screen (alarm window). In the alarm screen shown in Fig. 3, each of the alarm elements K1 to K3 includes, for example, an alarm ID, an alarm level, a plant state, a date and time (date and time of abnormality occurrence or date and time of recovery), a monitoring item, and detailed information.

[0030] Furthermore, when the alarm screen processing unit 251 receives a command to display an alarm screen from the input unit 18, it creates an alarm screen based on the display command and displays it on the display unit 19. For example, when a command to display an alarm screen and period information are input from the input unit 18, it reads out alarm information that has occurred during the input period information from the alarm information storage unit 24, creates an alarm screen based on the read alarm information, and displays it on the display unit 19.

[0031] The graph screen processing unit 252 displays a trend graph screen on the display unit 19, in which the time transition of input data related to the monitoring items of the plant 1 is depicted as a graph. For example, the graph screen processing unit 252 acquires input data corresponding to preset monitoring items from the data acquisition unit 21 or the data storage unit 22, creates a graph based on the acquired input data, and displays it on the trend graph screen. The trend graph screen may display graphs for a plurality of monitoring items. Furthermore, the monitoring items displayed in the trend graph screen can be set, added, or changed as appropriate by the user.

[0032] FIG. 4 is a diagram showing an example of a trend graph screen (trend graph window). As shown in FIG. 4, the trend graph screen displays a graph based on the input data of the monitoring items set by the user. The trend graph screen is provided with a recent mode and a historical mode. When the recent mode is selected, the graph screen processing unit 252 acquires input values ​​of the monitoring items to be displayed from the data acquisition unit 21 at any time, and displays a graph based on the acquired input values ​​on the trend graph screen. As a result, the latest input data for each monitoring item is updated at any time and displayed on the trend graph screen. When the historical mode is selected, the graph screen processing unit 252 acquires input data for a predetermined past period designated by the user from the data storage unit 22, and displays a graph based on the acquired input data on the trend graph screen. At this time, the range of the time axis may be adjusted according to the length of the designated period.

[0033] In addition, as shown in FIG. 5, when an alarm screen and a trend graph screen are displayed on the display unit 19 and the user operates the input unit 18 (e.g., a mouse) to drag and drop an alarm element displayed on the alarm screen onto the trend graph screen, the graph screen processing unit 252 identifies the alarm element that was dragged and dropped, and updates the trend graph screen based on the identified alarm element.

[0034] For example, the graph screen processing unit 252 acquires input data for a predetermined period including the date and time specified from the dragged-and-dropped alarm element (for example, a predetermined period before and after the acquired date and time) from the data storage unit 22. The monitoring items for which input data is acquired at this time may be the monitoring items currently set to be displayed on the trend graph screen, or may be limited to monitoring items related to the alarm element. Furthermore, the graph screen processing unit 252 displays an emphasis element for emphasizing the abnormality occurrence date and time or the recovery date and time on the trend graph screen. The emphasis element will be described later.

[0035] For example, as shown in Fig. 5, when an alarm element with an ID of "J13" is dragged and dropped from the alarm screen to the trend graph screen, the abnormality occurrence date and time "August 12th, 3:02" contained in this alarm element is obtained, and input data for a predetermined period including the obtained "August 12th, 3:02" is obtained from the data storage unit 22. At this time, the input data to be obtained may be limited to the monitoring item "AAN0253" of "J13", or may be the preset monitoring items "AAN0256", "AAN0255", and "AAN0253". These may also be set by the user.

[0036] As a result, for example, as shown in FIG. 5, a graph relating to input data around the date and time when the abnormality occurred is displayed on the trend graph screen. Furthermore, the graph screen processing unit 252 displays an emphasis element for emphasizing the date and time when the abnormality occurred on the trend graph screen. One example of the emphasis element is to display a cursor CS at that time, or a message MS indicating that time, as shown in Fig. 5. This makes it possible to easily notify the user of the time when the abnormality occurred or the time transition of the input data of the monitoring item where the abnormality occurred.

[0037] In addition, when multiple alarm elements are dragged and dropped at the same time, the graph screen processing unit 252 adjusts the range of the time axis so that the date and time of occurrence of abnormalities included in the specified multiple alarm elements are displayed on the trend graph screen. Specifically, the graph screen processing unit 252 acquires the dates and times from the multiple alarm elements that have been dragged and dropped, and acquires input data for a predetermined period including all of the acquired dates and times from the data storage unit 22. The input data acquired at this time is input data for the monitoring items related to the alarm elements that have been dragged and dropped. The graph screen processing unit 252 adjusts the range of the time axis so that the dates and times specified by all of the alarm elements that have been dragged and dropped are displayed on the trend graph screen. This makes it possible to present to the user the changes over time in the input data related to each alarm element and each monitoring item.

[0038] The graph screen processing unit 252 may also display the trends of each monitoring item on the trend graph screen in association with multiple alarm elements on the alarm screen. For example, when one of multiple alarm elements that have been dragged and dropped on the alarm screen is selected (e.g., clicked), the graph on the trend graph screen corresponding to the selected alarm element may be displayed in a different manner from the other graphs (e.g., blinking, changing the color or thickness, etc.). This makes it possible to present the user with an easy-to-understand change in the input data of the selected alarm element over time.

[0039] Also, instead of the above display example, each alarm element on the alarm screen and each graph on the trend graph screen corresponding thereto may be displayed in the same color. For example, in FIG. 5, when three alarm elements related to alarm element IDs "J13", "J14", and "J15" are dragged and dropped from the alarm screen to the trend graph screen, first, "J13" and "J15" are alarm elements related to the occurrence and recovery of an abnormality for the common monitoring item "AAN0253". In such a case, the alarm screen processing unit 251 and the graph screen processing unit 252 display the graph of the monitoring item "AAN0253" on the trend graph screen and the alarm elements "J13" and "J15" on the alarm screen in the same color. Also, for the alarm element ID "J14", the graph of the monitoring item "AAN0256" on the trend graph screen and the alarm element "J14" on the alarm screen are displayed in the same color. In this way, it is possible for the user to easily grasp the relationship between each alarm element on the alarm screen and each graph on the trend graph screen.

[0040] The logic screen processing unit 253 extracts the control logic from a control logic storage unit (not shown) in which control logic information of the plant 1 is stored, creates a logic screen based on the extracted control logic, and displays it on the display unit 19.

[0041] Fig. 6 is a diagram showing an example of a logic screen. As shown in Fig. 6, the logic screen displays, for example, the control logic of the plant and also displays the current control state so that it can be visually recognized.

[0042] For example, as shown in FIG. 7, when any alarm element is selected on the alarm screen and a predetermined input operation is performed, the logic screen processing unit 253 acquires control logic related to the designated alarm element from a control logic storage unit (not shown), creates a logic screen based on the acquired control logic, and displays it on the display unit 19. An example of the predetermined input operation is, for example, an operation of pressing a menu button B1 for displaying a logic screen provided on the alarm screen. In addition, this menu button B1 may be always displayed at a predetermined position on the alarm screen, or may be configured to be temporarily displayed when an alarm element is designated and right-clicked. In addition, the input means for displaying the logic screen is not limited to the above-mentioned menu button B1, and may be an operation interface that allows input operations such as clicking.

[0043] Furthermore, when any graph is selected on the trend graph screen and a predetermined input operation is performed, the logic screen processing unit 253 may display a logic screen related to the monitoring item corresponding to the selected graph on the display unit 19. In this way, it becomes possible to link various graphs displayed on the trend graph screen with the logic screen.

[0044] Next, a plant monitoring method according to this embodiment will be described. First, the data acquiring unit 21 acquires input data from the plant 1. Here, the input data of the plant 1 may be input via a control device (not shown) that controls the plant 1, or may be input directly from various sensors provided in the plant 1. In other words, there is no particular limitation on the method of acquiring the input data in the plant 1. The data acquiring unit 21 associates the acquired input data with its monitoring item and time information, stores it in the data storage unit 22, and outputs it to the alarm output unit 23.

[0045] The alarm output unit 23 compares the input data with the normal range, detects an abnormality when the input data is outside the normal range, and creates alarm information related to the detected abnormality. In addition, when the input data that was out of the normal range transitions into the normal range, the alarm output unit 23 detects an abnormal return and creates alarm information related to the detected abnormal return. The created alarm information is stored in the alarm information storage unit 24 and is also output to the monitoring screen processing unit 25.

[0046] The warning screen processing unit 251 creates a warning screen based on the warning information and causes the display unit 19 to display it. Furthermore, when an instruction to display a trend graph screen is input from the input unit 18, the graph screen processing unit 252 creates a trend graph screen based on the input information and displays it on the display unit 19. Note that when alarm information is output, the graph screen processing unit 252 may automatically display the trend graph screen on the display unit 19.

[0047] Then, when the user operates the input unit 18 to drag and drop one or more alarm elements displayed on the alarm screen onto the trend graph screen while the display unit 19 is displaying the alarm screen (see, for example, FIG. 5), a graph based on the input data of the date and time specified by the dragged-and-dropped alarm elements is displayed on the trend graph screen. As a result, a graph for the abnormality occurrence date and / or abnormality recovery date and time for the alarm element selected by the user is displayed on the trend graph screen, and the abnormality occurrence date and / or abnormality recovery date and time are highlighted.

[0048] In addition, when any alarm element is selected on the alarm screen and a specified input operation is performed, or when any graph is selected on the trend graph screen and a specified input operation is performed, the logic screen processing unit 253 creates a logic screen based on the control logic for the selected monitoring item and displays it on the display unit 19.

[0049] As described above, according to the plant monitoring device, plant monitoring method, and program of the present embodiment, when one or more alarm elements displayed on an alarm screen and a trend graph screen are dragged and dropped onto the trend graph screen, a graph including the date and time specified by the dragged and dropped alarm element is displayed on the trend graph screen. This allows the user to display a graph related to a desired alarm element on the trend graph screen with a single drag-and-drop operation, thereby improving convenience. As a result, the user can quickly take action or make a decision to restore the plant, shortening the time from plant shutdown to restoration, and reducing lost profits.

[0050] Furthermore, the trend graph screen highlights the date and time when an abnormality occurred or when the abnormality was restored, allowing the user to easily check how the input data has changed since that date and time.

[0051] In addition, when multiple alarm elements are dragged and dropped onto the trend graph screen from the alarm screen, the time axis range is adjusted so that the trend graph screen displays the date and time of the abnormality identified by the multiple designated alarm elements. This allows the user to check while comparing the transition of the input data of each monitoring item for multiple alarm elements, and to comprehensively determine the cause of the abnormality.

[0052] In addition, when multiple alarm elements are dragged and dropped from the alarm screen onto the trend graph screen, the trends related to the multiple monitoring items displayed on the trend graph screen are displayed in correspondence with the multiple alarm elements on the alarm screen, making it easy to understand which graph on the trend graph screen corresponds to which alarm element.

[0053] Although one embodiment of the present disclosure has been described above, the technical scope of the present disclosure is not limited to the scope described in the above embodiment. Various modifications or improvements can be made to the above embodiment without departing from the gist of the invention, and the forms with such modifications or improvements are also included in the technical scope of the present disclosure.

[0054] For example, in the above-described embodiment, the plant monitoring device 10 is equipped with a data storage unit 22 and an alarm information storage unit 24, but this is not limited to this example. For example, these storage units may be configured to be stored on a server (e.g., a cloud server, etc.) connected via a network.

[0055] The plant monitoring device, the plant monitoring method, and the program according to the embodiment described above can be understood, for example, as follows.

[0056] A plant monitoring device (10) according to the present disclosure includes an alarm output unit (23) that creates alarm information including a date and time when an abnormality in a plant (1) is detected, an alarm screen processing unit (251) that displays an alarm screen including an alarm element based on the alarm information on a display unit (19), and a graph screen processing unit (252) that displays on the display unit a trend graph screen in which a temporal transition of input data related to a monitoring item of the plant is depicted as a graph, and when the alarm screen and the trend graph screen are displayed on the display unit and the alarm element displayed on the alarm screen is dragged and dropped onto the trend graph screen, the graph screen processing unit displays on the trend graph screen a graph of input data for a predetermined period including the date and time specified from the alarm element that was dragged and dropped, and displays on the trend graph screen an emphasis element for emphasizing the date and time.

[0057] According to the plant monitoring device of the present disclosure, a graph related to a desired alarm element can be displayed on the trend graph screen with a single drag-and-drop operation, thereby improving the convenience of plant monitoring. In addition, the trend graph screen highlights the date and time when an abnormality occurred, so that the user can easily check how the input data changed before and after the date and time when the abnormality occurred.

[0058] In the plant monitoring device according to the present disclosure, when recovery of the plant from the abnormality is detected, the alarm output unit may create alarm information including a date and time of recovery.

[0059] According to the plant monitoring device of the present disclosure, warning information is generated not only for the occurrence of an abnormality but also for the recovery from the abnormality, which allows the user to easily check how the input data has changed before and after the date and time when the abnormality was recovered from.

[0060] In the plant monitoring device according to the present disclosure, the graph screen processing unit may adjust a range of a time axis when a plurality of alarm elements are dragged and dropped from the alarm screen onto the trend graph screen so that each date and time identified from each of the plurality of alarm elements is displayed on the trend graph screen.

[0061] According to the plant monitoring device of the present disclosure, a user can check and compare the trends in input data for each monitoring item for multiple alarm elements, enabling a comprehensive judgment of the causes of abnormalities, etc.

[0062] In the plant monitoring device according to the present disclosure, when a plurality of alarm elements are dragged and dropped from the alarm screen onto the trend graph screen, the graph screen processing unit may display each of the alarm elements on the alarm screen in association with each of the graphs displayed on the trend graph screen.

[0063] According to the plant monitoring device according to the present disclosure, the user can easily understand which alarm element each graph on the trend graph screen corresponds to.

[0064] A plant monitoring method according to the present disclosure includes, when an abnormality in a plant is detected, a step of creating alarm information including a date and time when the abnormality occurred, a step of displaying an alarm screen including an alarm element based on the alarm information on a display unit, a step of displaying a trend graph screen on the display unit in which a temporal progression of input data related to monitoring items of the plant is depicted as a graph, and, when the alarm screen and the trend graph screen are displayed on the display unit and the alarm element displayed on the alarm screen is dragged and dropped onto the trend graph screen, a graph of input data for a predetermined period including the date and time identified from the dragged-and-dropped alarm element is displayed on the trend graph screen, and an emphasis element for emphasizing the date and time is displayed on the trend graph screen, the steps being executed by a computer.

[0065] A program according to the present disclosure causes a computer to function as the above-described plant monitoring device. [Explanation of symbols]

[0066] 1: Plant 10: Plant monitoring equipment 13: Storage section 18: Input section 19:Display section 21: Data acquisition section 22: Data storage unit 23: Alarm output section 24: Alarm information storage section 25: Monitoring screen processing section 251: Alarm screen processing unit 252: Graph screen processing unit 253: Logic screen processing section

Claims

1. an alarm output unit that generates alarm information including at least one of an abnormality occurrence date and time when an abnormality occurs in a plant and a recovery date and time when the plant recovers from the abnormality; an alarm screen processing unit that displays an alarm screen including an alarm element based on the alarm information on a display unit; a graph screen processing unit that displays on the display unit a trend graph screen in which the time transition of input data related to monitoring items of the plant is depicted as a graph; Equipped with when the alarm element displayed on the alarm screen is dragged and dropped onto the trend graph screen while the alarm screen and the trend graph screen are displayed on the display unit, the graph screen processing unit displays, on the trend graph screen, a graph of input data for a predetermined period including at least one of an abnormality occurrence date and time and a recovery date and time specified from the dragged and dropped alarm element, and displays, on the trend graph screen, an emphasis element for emphasizing at least one of the abnormality occurrence date and time and the recovery date and time; the graph screen processing unit, when a plurality of the alarm elements are dragged and dropped from the alarm screen onto the trend graph screen, adjusts the range of a time axis so that at least one of each of the abnormality occurrence dates and times and each of the recovery dates and times specified from each of the plurality of alarm elements is displayed on the trend graph screen.

2. 2. The plant monitoring device according to claim 1, wherein, when a plurality of the alarm elements are dragged and dropped from the alarm screen onto the trend graph screen, the graph screen processing unit displays each of the alarm elements on the alarm screen in association with each of the graphs displayed on the trend graph screen.

3. creating alarm information including at least one of an abnormality occurrence date and time when an abnormality occurs in a plant and a recovery date and time when the plant recovers from the abnormality; displaying an alarm screen including an alarm element based on the alarm information on a display unit; displaying a trend graph screen on the display unit, the trend graph screen showing a graph of a time transition of input data related to monitoring items of the plant; a step of, when the alarm element displayed on the alarm screen is dragged and dropped onto the trend graph screen while the alarm screen and the trend graph screen are displayed on the display unit, displaying on the trend graph screen a graph of input data for a predetermined period including at least one of an abnormality occurrence date and time and a recovery date and time specified from the dragged and dropped alarm element, and displaying on the trend graph screen an emphasis element for emphasizing at least one of the abnormality occurrence date and time and the recovery date and time; a step of adjusting a range of a time axis so that, when a plurality of the alarm elements are dragged and dropped onto the trend graph screen from the alarm screen, at least one of each of the abnormality occurrence dates and times and each of the recovery dates and times specified from each of the plurality of the alarm elements is displayed on the trend graph screen; A computer executes the plant monitoring method.

4. A program for causing a computer to function as the plant monitoring device according to claim 1 or 2.

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