JPH0654518B2 - Process alarm display - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a process alarm display device, and particularly to a process alarm display suitable for accurately displaying contents necessary for operator operation when a large number of process alarms are generated. Regarding the device.

[Conventional technology]

Conventionally, this type of device instantly switches to the control and monitoring screen for operation by pressing the key corresponding to the alarm summary screen (screen that displays alarm occurrence time (TIME), device No., factor, etc. in order of new occurrence). It is configured to be able to.

However, when a new alarm is generated during display, the alarm currently being displayed is sequentially erased from the one displayed first in order to display the new alarm. Therefore, even if the operator tries to grasp the state of the plant based on the screen contents, the operator may not be able to make a correct decision.

In addition, while there is processing time for the plant abnormality detection, CRT screen display, and keyboard input code processing, the operator judges the plant status based on the information currently displayed on the CRT, and operates. CRT to do
No consideration was given to the fact that the displayed contents and the detected contents of abnormalities in the plant match.

[Problems to be solved by the invention]

In the above conventional technique, when a new alarm is newly generated while the alarm summary screen is displayed in any case, the newly generated alarm is displayed on the screen. Disappear. Therefore, the operator looks at the alarm summary screen to determine the plant situation,
Although it is necessary to judge which device should handle the problem, the old alarm disappears from the screen in the middle of the judgment, and the operator cannot make a correct judgment, leading to a misoperation.

In addition, the alarm summary screen displays the screen number of the most suitable processing screen for the alarm being displayed, and based on this,
The operator can switch the screen to the processing screen by pressing the key on the keyboard corresponding to the display of the screen No., but the plant abnormality detection process, CRT screen display process, and keyboard input code process If there is processing time and processing is executed asynchronously and a new alarm occurs immediately before pressing the key, the correspondence between the alarm recognized by the operator and the key does not match and the operator expects by pressing the key. There is a problem that the screen is switched to a screen different from the processed screen.

SUMMARY OF THE INVENTION An object of the present invention is to provide a process alarm display device in which the alarm summary screen can be locked if necessary and the screen update due to a newly generated alarm can be suppressed.

[Means for solving problems]

The above object is to store alarm factors corresponding to process abnormalities in the alarm factor storage table in the order of occurrence and display the latest information of the alarm factor storage table and the processing screen number corresponding to the latest information in response to a display request. In the process alarm display device that switches the screen display to the processing screen when specified, the lock request key of the display screen was pressed while the contents of the alarm factor storage table were being displayed, and the display screen was requested to be locked. At this time, the displayed content of the alarm factor storage table when the lock request key is pressed is saved from the alarm factor storage table to another table, and the content of the other table and the processing screen number for the content are displayed on the display device. And a newly generated alarm factor is stored in the alarm factor storage table during display by the unit. Means for displaying a newly generated alarm mark on the display screen, and means for switching the display of the separate table to the display of the latest information of the alarm factor storage table when the lock request key is pressed again while the display screen is locked. It is achieved by providing.

[Action]

Due to the request to lock the display screen, the part related to the display screen of the alarm factor storage table is saved to another table,
The saved contents are continuously displayed on the screen. Therefore, the display content of the screen and the operation of the operator do not become inconsistent. However, if a new alarm is issued while the screen is locked, it is a safety measure that the operator misses the new alarm. However, in the present invention, even when the evacuation contents are displayed on the screen, when a new alarm occurs, the fact of the occurrence can be known by the new alarm mark, and moreover, when the operator desires, the lock request key can be pressed. By pressing the button, the new alarm is displayed immediately, which improves safety.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. It is a block diagram which shows one Example of this invention of FIG.

The plant alarm display device 1 inputs the process signal of the monitored plant 2, stores the information necessary for displaying the CRT screen 3 in the plant database 12 by the plant information input processing unit 11, and at the same time, the information change verification processing unit 13 Therefore, the abnormality of the plant is detected, and the alarm generator 16 outputs a sound from the buzzer 20 or turns on the LED 21 to notify the operator of the generation of the alarm. The operator presses the alarm confirmation key on the keyboard 4 to stop the alarm generation by the alarm confirmation processing unit 22 via the keyboard input processing unit 25. Further, the information change detection processing unit 13 creates and updates the alarm factor storage table 15 based on the factor of the generated alarm.

FIG. 2 shows the details of the alarm factor storage table 15, which is composed of the storage table of n cases and is the time TIM of alarm generation.
E, device No., ALARM factor, and the screen number of the most suitable processing screen for the alarm that occurred is found from the alarm factor-monitoring operation screen correspondence table 14 and related PICT
Store in URE. The alarm factors are stored in order from table No. 1, and the table No. in which the latest alarm is stored is stored in the latest alarm storage table No. m.

By pressing the alarm summary screen key from the keyboard 4, the CRT screen display processing unit 1
9 displays the alarm summary screen on the CRT screen 3.

As an example, if the contents of the alarm factor storage table are as shown in FIG. 3, the latest alarm storage No.m = 4, so the tables 4, 3, 2,
The alarm summary screen is displayed in the order of 1 as shown in FIG. Also, the screen D of the keyboard 4
By pressing the screen selection keys 41 to 44 respectively corresponding to A to CR, the CR is transmitted via the screen display request unit 24 in response to this.
Screens D to A are displayed on the CRT screen 3 by the T screen processing unit 19. When a newly generated alarm factor e occurs while the alarm summary screen is displayed, the latest alarm storage No. m = 5 and the alarm summary screen is as shown in FIG.

CRT screen display processing unit 19, information change detection processing unit 13,
Considering the processing time and timing of the keyboard input processing unit 25, the operator makes a judgment based on the contents displayed on the CRT screen 3 and presses the screen selection keys 41 to 44. The storage table 15 is updated, and CR is displayed by the CRT display processing unit 19.
The operator may operate the T screen 3 in a state where it has not been updated yet, and a malfunction may occur.

However, according to the present invention, by pressing the screen lock key 45 of the keyboard 4, the alarm factor saving request unit 23 performs the alarm factor saving process via the keyboard input processing unit 25, and the latest alarm in the alarm factor storage table 15 is executed. If the contents of the storage table No.m are saved in the update alarm storage table No. memory m'18 shown in FIG. It is possible to prevent the screen from being updated.
Also, in order to know the occurrence of a new alarm during the screen update lock, the latest alarm storage table No., m and the latest alarm storage table No. memory m'are compared. If they do not match, there is a new alarm during the screen update lock. It is possible to inform the operator by displaying the newly generated alarm mark 30 on the CRT screen 3. By pressing the screen lock key 45 again during the screen update lock, the lock is released and the alarm summary screen is displayed based on the information of the latest alarm storage table No. and m, and the screen is updated by the alarm of new occurrence. Be seen.

〔The invention's effect〕

According to the present invention, it is possible to give a sufficient judgment time to the operator in the event of a plant abnormality, prevent operator's judgment mistake and prevent malfunction of the device, and it becomes possible to respond promptly to the plant, thereby ensuring plant safety. It becomes possible to drive.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a configuration explanatory view of an alarm factor storage table according to the present invention, and FIG.
The figure is a configuration explanatory view showing a concrete example of the alarm factor storage table,
4 and 5 are display diagrams showing an example of the alarm summary screen display, and FIG. 6 is the alarm storage table No. in the present invention.
It is a memory explanatory view. 1 ... Process alarm display device, 2 ... Monitored plant, 3
... CRT screen, 4 ... keyboard, 11 ... plant information input processing unit, 12 ... plant database, 13 ... information change verification processing unit, 14 ... alarm factor-monitoring operation screen correspondence table, 15 ... alarm factor storage table, 16 ...
Alarm generator, 17 ... Alarm factor save processing unit, 18 ... Alarm storage table No. storage unit, 19 ... CRT screen display processing unit, 20 ... Buzzer, 21 ... LED, 22 ... Alarm confirmation unit,
23 ... Alarm factor evacuation request unit, 24 ... Screen display request unit, 2
5 ... Keyboard input processing unit, 30 ... Newly generated alarm mark, 31 ... Alarm summary screen, 41-44 ... Screen selection key, 45 ... Screen lock key.

Claims (1)

[Claims] 1. An alarm factor corresponding to a process abnormality is stored in the alarm factor storage table in the order of occurrence, and the latest information of the alarm factor storage table and the processing screen number for the latest information are displayed by a display request, and the processing screen number is displayed. In the process alarm display device that switches the screen display to the processing screen when is specified, the lock request key of the display screen is pressed while the contents of the alarm factor storage table are being displayed, and the lock of the display screen is requested. When the lock request key is pressed, the displayed contents of the alarm factor storage table are saved from the alarm factor storage table to another table, and the contents of the other table and the processing screen number for the content are displayed on the display device. And a new alarm factor is stored in the alarm factor storage table during display by the device. Means for displaying a newly generated alarm mark on the display screen, and means for switching the display of the separate table to the display of the latest information of the alarm factor storage table when the lock request key is pressed again while the display screen is locked. A process alarm display device characterized by being provided.