JP4626823B2 - Alarm information display device and alarm information display method - Google Patents

Description

  The present invention relates to an alarm information display device and an alarm information display method for displaying alarm information generated in a plant, and more particularly to an alarm information display device and an alarm information display method in which display contents are easily recognized.

  As a system for displaying alarm information transmitted from a plant, a system for displaying a message indicating alarm information on a screen in real time is known. In such a system, for example, the latest alarm information to the old alarm information are displayed in order from the top. When new alarm information is received, the latest alarm is inserted in the uppermost line (first line) of the screen, and the remaining alarm information is scrolled downward by one line. Since the number of alarm information that can be displayed on the screen is limited, the confirmed alarm information is deleted preferentially, and the alarm information that can no longer be displayed is deleted from the bottom of the screen in order of oldest transmission date and time. .

  For example, Patent Document 1 discloses an alarm management system having a function of automatically identifying unnecessary alarms and suppressing the alarms.

JP 2005-84774 A

  However, the conventional system has a problem that display inconvenience occurs when alarm chattering or repeating occurs. As shown in FIG. 5, chattering is a phenomenon that occurs based on fluctuations in the process data value in the vicinity of an alarm detection threshold, and the state frequently switches between alarm generation and recovery due to chattering. In such a case, the alarm information notifying the occurrence of the alarm and the alarm information notifying the return from the alarm are alternately and repeatedly transmitted in a short time, so that the display area of the screen is used up in a short time. For this reason, the alarm information of other senders is scrolled downward and deleted, so that there is a possibility that these alarm information cannot be confirmed.

  Repeating is a phenomenon in which alarm information that informs the occurrence of an alarm is repeatedly transmitted when a logic that generates an alarm when a predetermined event continues for a predetermined time is used. Even in the case of repeating, there is a possibility that a large number of alarm information may be transmitted in a short time, so that the same problem as chattering may occur.

  An object of the present invention is to provide an alarm information display device and an alarm information display method capable of acquiring an appropriate display state even when chattering or repeating occurs.

The alarm information display device of the present invention is an alarm information display device for displaying alarm information generated in a plant, storage means for sequentially storing the alarm information generated in the plant in association with the generation source of the alarm information, and the storage Display means for displaying the alarm information stored in the means in order from the latest in chronological order at the time of occurrence, and the maximum number of alarm information for each source displayed by the display means Display number prescribing means for prescribing a number smaller than the total display number of information, and when the alarm information of a specific generation source has already reached the maximum number, the display means When displaying the next alarm information as the latest alarm information, the oldest alarm information of the specific source is deleted, Only updates the display state for a constant originated the alarm information, and maintains the display state of other origin alarm information.
According to the alarm information display device, be chattering or repeating occurs, it can continue displaying the other alarm information.

The maximum number may be specified in accordance with an operation on the display by the display means.

According to the operation on the display by the display means, the selection of the generation source that is the display target of the alarm information by the display means may be accepted.

The alarm information display method of the present invention is an alarm information display method for displaying alarm information generated in a plant, a storage step of sequentially storing the alarm information generated in the plant in association with the generation source of the alarm information, and the storage A display step for displaying the alarm information stored in the step in order from the most recent in time series at the time of occurrence, and the maximum number of alarm information for each source displayed in the display step is displayed in the alarm in the display step. A display number defining step which defines a number smaller than the total number of information displayed, and in the display step, when the alarm information of a specific source has already reached the maximum number, the specific source When the next alarm information of is displayed as the latest alarm information, the oldest alarm of the specific source By erasing the alarm information, only updates the display state for the alarm information of the specific origin, and maintains the display state of other origin alarm information.
According to the alarm information display method, even if chatter and repeating occurs, it can continue displaying the other alarm information.

  According to the alarm information display device of the present invention, since only the latest alarm information is updated and displayed for each source, even when chattering or repeating occurs, other alarm information can be continuously displayed.

  According to the alarm information display method of the present invention, since only the latest alarm information is updated and displayed for each source, even when chattering or repeating occurs, other alarm information can be continuously displayed.

  Hereinafter, an embodiment of an alarm information display device according to the present invention will be described with reference to FIGS.

  FIG. 1 is a block diagram illustrating a configuration example of a plant control system in which the alarm information display device of the present embodiment is used.

  As shown in FIG. 1, the plant control system is distributed in each part of the plant, and field information 1, 2,... For controlling field devices 1, 2,. And a terminal device 3 for displaying the same. The field controllers 2, 2,... And the terminal device 3 are connected to each other via a communication line 4.

  As illustrated in FIG. 1, the terminal device 3 stores alarm information generated in the plant in association with the generation source of the alarm information, and sequentially stores the alarm information stored in the storage unit 31. Display means 32 for displaying in real time in order of time series, and expansion means 33 for expanding and displaying the history of alarm information about the generation source in time series in response to an instruction on display by the display means 32; Configure.

  FIG. 2 is a flowchart showing an operation procedure of the storage unit 31 of the terminal device 3.

  The storage unit 31 receives alarm information transmitted from each part of the plant and stores it. In step S1 of FIG. 2, the storage means 31 waits for the alarm information to be received and proceeds to step S2. The alarm information includes a message indicating the content of the alarm and a source of the alarm information. The alarm information includes the transmission date and time.

  In step S2, a pairing key (identifier) corresponding to the alarm information source is generated, and the pairing key is added to the received message. The source of the alarm information is recognized as a tag name or slot number associated with the field device 1 or a parameter held by the field device 1.

  Next, in step S3, the number of stored messages with the pairing key generated in step S2 is counted, and it is determined whether or not the number of messages to be held (for example, 10) exceeds the count. . If the determination is positive, the process proceeds to step S4, and if the determination is negative, the process proceeds to step S5. Here, for example, the specific field device 1 specified by the pairing key or the number of messages stored in the storage means 31 relating to specific parameters held by the field device 1 is monitored.

  In step S4, the message with the oldest transmission date / time is deleted from the storage unit 31 among the messages with the pairing key added, and the process proceeds to step S5. As a result, the number of messages stored in the storage unit 31 is limited in units of transmission sources.

  In step S5, the alarm information message received in step S1 is stored in the storage means 31 in association with the pairing key generated in step S2 and the transmission date and time, and the process returns to step S1.

  Next, the operation of the display unit 32 will be described. FIG. 3 is a diagram showing a display example by the display means 32. The display unit 32 searches the alarm information stored in the storage unit 31 in real time, and updates and displays the alarm information with the latest transmission date and time on the screen of the terminal device 3.

  FIGS. 3A to 3C show changes in display when new alarm information is sequentially received. For example, in FIG. 3A, the transmission date and time is “06/03/13 (Monday) 18:19:46” at the top (first line) of the screen, and the transmission source identified as “NZPID1” Alarm information is displayed. Here, a message 51A notifying the occurrence of an alarm is displayed.

  FIG. 3B shows a display immediately after that, and at the top of the screen, a message 51B indicating a return from the alarm state is displayed for the transmission source specified as “NZPID1”.

  FIG. 3C further shows the display immediately after that, and at the top of the screen, a message 51C for notifying the occurrence of an alarm again for the transmission source specified as “NZPID1” is displayed.

  As described above, in the alarm information display device according to the present embodiment, the latest message is sequentially displayed at the top of the screen, but when alarm information from the same source is continuously received, the previous message is displayed. Instead, a new message is updated and displayed. For this reason, even if chattering or repeating occurs without scrolling other messages (for example, message 52 in FIGS. 3A to 3C), a message about the source is not displayed. The display does not flow from top to bottom simply by switching. Therefore, it is possible to easily check the alarm status for other sources that are not chattering or repeating.

  Next, the operation of the expansion means 32 will be described. FIG. 4 is a diagram illustrating a display screen by the expansion means 32.

  In the screen display of FIG. 3C, when the icon 53A displayed at the top of the message 51C is clicked, the expansion means 32 uses the corresponding pairing key as a search key and the specific transmission source (“NZPID1”) from the storage means 31. Message of the sender specified as) is displayed on the screen of the terminal device 3.

  At this time, as shown in FIG. 4A, the icon 53A changes its display to the icon 53B, and a message group 55 indicating the history of alarm information from the transmission source specified as “NZPID1” is displayed below the message 51C. Are expanded and displayed in the order of the call origination date. The display position of another message (for example, message 52) is shifted below the message group 55.

  As described above, in the alarm information display device according to the present embodiment, the alarm state of the transmission source can be easily confirmed by expanding and displaying the message for each transmission source. For example, as shown in FIG. 4, if the generation and return of an alarm are alternately repeated, it can be determined that chattering occurs, and the chattering state can be easily confirmed. Further, if the same message informing the occurrence of the alarm is repeated, it can be determined that repeating has occurred, and the repeating state can be easily confirmed.

  When chattering or repeating continues in the display state of FIG. 4A, the latest alarm information is displayed as a message 51D as shown in FIG. 4B, and the oldest message 55a included in the message group 55 is displayed. Is deleted. The messages displayed in the message group 55 correspond to the messages stored in the storage unit 31, and as shown in the procedure of FIG. 2, the number of displayed messages is limited to a certain number. Therefore, when new alarm information is received from the transmission source identified as “NZPID1” in the state of FIG. 4A, the message 51D is updated and the display content of the message group 55 is 1. Although shifted one by one, the display area of these messages remains the same. For this reason, while chattering or repeating occurs, messages about other sources are not scrolled and can be easily confirmed.

  On the other hand, when the icon 53B is clicked from the display state of FIG. 4A, the message group 55 is folded and the display form returns to the display form of FIG. In this way, by handling messages from the same source as one group, it is possible to freely switch the display form between a form that displays only the latest message and a form that displays the history of the message. Become.

  As described above, according to the alarm information display device of the present invention, only the latest alarm information is updated and displayed for each source, so that other alarm information can be continuously displayed even if chattering or repeating occurs. Moreover, the state of chattering or repeating can be easily confirmed by displaying a message for each source.

  The scope of application of the present invention is not limited to the above embodiment. The present invention can be widely applied to an alarm information display device and an alarm information display method for displaying alarm information generated in a plant.

The block diagram which shows the structural example of the plant control system in which the alarm information display apparatus of this embodiment is used. The flowchart which shows the operation | movement procedure of a storage means. The figure which shows the example of a display by a display means. The figure which illustrates the display screen by an expansion | deployment means. It is a figure which shows the generation | occurrence | production situation of chattering.

Explanation of symbols

3 Terminal device 31 Storage means 32 Display means 33 Deployment means

Claims (4)

In the alarm information display device that displays alarm information generated in the plant,
Storage means for sequentially storing the alarm information generated in the plant in association with the generation source of the alarm information;
Display means for displaying alarm information stored in the storage means, arranged in order from the latest in chronological order at the time of occurrence;
Display number defining means for prescribing the maximum number of alarm information for each source displayed by the display means to a number smaller than the total number of alarm information displayed on the display means;
Equipped with a,
When the alarm information of a specific source has already reached the maximum number, the display means displays the specific alarm source when displaying the next alarm information of the specific source as the latest alarm information. The alarm information display device is characterized in that by deleting the oldest alarm information, only the alarm information of the specific generation source is updated, and the display state of the alarm information of other generation sources is maintained . 2. The alarm information display device according to claim 1 , wherein the maximum number is specified in accordance with an operation on the display by the display means . The alarm information display device according to claim 1 or 2, wherein the alarm information display device receives a selection of the generation source as a display target of the alarm information by the display unit in accordance with an operation on display by the display unit. In the alarm information display method for displaying alarm information generated in the plant,
A storage step of sequentially storing the alarm information generated in the plant in association with the generation source of the alarm information;
A display step of displaying alarm information stored by said storing step, in the chronological order of the occurrence listed from most recent first,
A display number defining step for prescribing the maximum number of alarm information for each source displayed by the display step to a number smaller than the total number of alarm information displayed in the display step;
Equipped with a,
In the display step, when the alarm information of a specific source has already reached the maximum number, when the next alarm information of the specific source is displayed as the latest alarm information, the specific source An alarm information display method characterized by erasing the oldest alarm information, updating the display state only for the alarm information of the specific generation source and maintaining the display state of the alarm information of the other generation source .

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