JPS6326798A - Process alarm display device - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a process alarm display device, and in particular, a process alarm suitable for accurately displaying the contents necessary for operator operations when a large number of process alarms occur. Related to display devices.

[Conventional technology]

Conventionally, this type of device can instantly switch to the control monitoring screen for operation by pressing a key corresponding to the alarm summary screen (a screen that displays alarm occurrence time (TIME), equipment Nα, causes, etc. in the order of new occurrences). It is configured as follows.

However, if a new alarm occurs during the display, in order to display the new alarm, the currently displayed 28 are sequentially erased starting from the one that was displayed first. For this reason, even if an operator tries to understand the state of the plant based on the screen contents, he may not be able to make a correct judgment.

In addition, while there are processing times for detecting abnormalities in the plant, displaying information on the CRT screen, and processing using keyboard input codes, the operator must judge the plant status and perform operations based on the information currently displayed on the CRT. To do this, CRT
No consideration was given to ensuring that the display contents matched the abnormality detection contents of the plant.

[Problem that the invention seeks to solve]

In the above conventional technology, if a new alarm occurs while the alarm summary screen is being displayed, the newly generated alarm is displayed on the screen, so the currently displayed alarms are displayed from the oldest one on the first screen. disappear. Therefore, operators can judge the plant status by looking at the alarm summary screen.
It is necessary to decide which equipment to respond to first, but in the middle of the decision, old alarms disappear from the screen, which prevents the operator from making accurate decisions and leads to operational errors.

In addition, the alarm summary screen displays the screen number of the most suitable processing screen for the displayed alarm, and based on this,
The operator can switch the screen to the processing screen by pressing the key on the keyboard that corresponds to the screen number displayed, but the plant abnormality detection process, the display process on the CRT screen, and the process using the keyboard input code are processed separately. Because time exists and processing is executed asynchronously, if a new alarm occurs immediately before a key is pressed, the correspondence between the alarm recognized by the operator and the key will not match, and the processing screen that the operator expected will not be displayed when the key is pressed. There was a problem that the screen would switch to a different screen.

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

[Means for solving problems]

The above object is achieved by saving the contents of the table in which the latest alarm factors are stored from the alarm factor storage table.

[Effect]

In response to the screen lock operation, new alarm factor contents are saved from the alarm factor storage table, and updating of the currently displayed contents is stopped. As a result, the content displayed on the CRT screen matches the alarm information stored in the memory, thereby eliminating malfunctions caused by erroneous operations by the operator or newly generated alarms.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 6. FIG. 1 is a block diagram showing one embodiment of the present invention.

The plant alarm display device 1 inputs process signals of the monitored plant 2, stores the information necessary for displaying the CR7 screen 3 in the plant database 12 using the plant information input processing section 11, and uses the information change verification processing section 13 to store the information necessary for displaying the CR7 screen 3. When an abnormality is detected, the alarm generating device 16 outputs a sound from the buzzer 20 or lights up the LED 21 to notify the operator of the occurrence of the alarm. When the operator presses the alarm confirmation key on the keyboard 4, the alarm confirmation processing section 22 via the keyboard input processing section 25 stops the generation of the alarm. The information change detection processing unit 13 also creates and updates the alarm factor storage table 15 based on the factors of the generated alarm.

FIG. 2 shows the details of the alarm factor storage table 15, which is composed of a storage table of n cases, and includes the time TIM of occurrence of ¥1 alarm.
E, fi device No., AL ARM factor and the screen number of the most suitable processing screen for the generated alarm.
It is stored in the search-related PICTURE from the cause-glance operation screen correspondence table 14. The alarm factors are stored in order from Table 1, and the table No. in which the latest alarm is stored is stored in the latest alarm storage table Non.

By pressing the alarm summary screen key on the keyboard 4, the CRT screen display processing section 1 is sent via the screen display requesting section 24.
9 displays the CRT screen 3 alarm summary screen.

For example, if the contents of the alarm factor storage table are as shown in Figure 3, the latest alarm storage number is 4, so table 4,
In the order of 3 and 2.1, newly generated alarms are displayed on the alarm summary screen as shown in Fig. 4.

Also, by pressing the screen selection keys 41 to 44 corresponding to screens D-A on the keyboard 4, the CRT screen processing section 19 causes the CRT screen processing section 19 to respond via the screen display requesting section 24.
Screen DA is displayed on R7 screen 3. If a new alarm factor e occurs while the alarm summary screen is displayed, the latest alarm storage NOm = 5 and the alarm summary screen is
It will look like Figure 5.

CRT screen display processing section 19. Information change detection processing section 13.
Considering the processing time and timing of the keyboard input processing unit 25, since the operator makes a judgment based on the content displayed on the CRT screen 3 and presses the screen selection keys 41 to 44, the information change detection processing unit 13 detects the alarm cause. The storage table 15 is updated, and the CRT display processing unit 19
The operator may perform an operation while the screen 3 has not yet been updated, and a malfunction may occur.

However, according to the present invention, when the screen lock key 45 of the keyboard 4 is pressed, the alarm factor save request section 23 performs the alarm factor save process via the keyboard input processing section 25, and the latest information in the alarm factor storage table 15 is saved. If the contents of the alarm storage table No. m are saved to the updated alarm storage table No. m' 18 shown in FIG. 6 and the contents of the alarm factor storage table 15 are displayed based on this information, it will be possible to update This can prevent the screen from being updated. In addition, in order to know whether a new alarm has occurred while the screen update is locked, compare the latest alarm storage table No. m with the latest alarm storage table No. memory m', and if they do not match, it is determined that a new alarm has occurred while the screen update is locked. However, by displaying a newly generated alarm mark 30 on the CRT screen 3, it is possible to notify the operator. By pressing the screen lock key 45 again while the screen update is locked, the lock is released and the alarm summary screen is displayed based on the information in the latest alarm storage table No. m, and the screen is updated with newly generated alarms. Nine.

〔Effect of the invention〕

According to the present invention, in the event of a plant abnormality, it is possible to give the operator sufficient time to make a decision, prevent the operator from making a mistake in judgment, prevent malfunction of the equipment, and quickly respond to the plant, thereby ensuring the safety of the plant. Driving becomes possible.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, FIG. 2 is an explanatory diagram of the configuration of an alarm factor storage table according to the present invention, and FIG.
The figure is a configuration explanatory diagram showing a specific example of an alarm factor storage table.
4 and 5 are display diagrams showing examples of alarm summary screen displays, and FIG. 6 is an alarm storage table NO. in the present invention.
It is a memory explanatory diagram.

Claims (1)

[Claims] 1. In a process alarm display device equipped with the function of displaying the requested alarm summary screen on the display screen, an alarm factor storage table that stores alarm factors corresponding to abnormalities in the process in the order of their occurrence, and a request to lock the display screen. and a display means for displaying on a screen the contents of the table after being saved by the processing means. A process alarm display device characterized by: