JPH0250487B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an alarm display device suitable for monitoring plant operating conditions.

In recent plant operation status monitoring systems, alarm display devices using CRT displays have become widespread.
The process quantities of each part of the plant to be monitored are displayed on the CRT display in bar graphs, meter images, etc., and these bar graphs, meter images, etc. are displayed so that operators can concretely understand the plant operating status. By displaying the system in a schematic diagram incorporated into the system diagram, we plan to reduce the number of operators and reduce their burden, thereby increasing the efficiency of monitoring.

Figure 1 shows a conventional example of such an alarm display device, where 1 is a man-machine console, 2 is a static display converter (SDC), 3 is a process input/output device (PI/O), and 4 is a process input converter (DC),
5 is an alarm comparator (AC), 6 is a dynamic display converter (DDC), and 7a and 7b are refresh memories (R.
Ma, RMb), 8 is the display, 9 is the limit value table (W/T), 10 is the pattern table (P/T)
111 is a display code memory.

This limit value table 9 stores limit values for each process amount. The pattern table 10 also stores data such as system diagrams, bar graphs, meter images, markers, etc. to be displayed on the display 8.

On the console 1, keys are arranged to select the part of the plant that you want to monitor, for example, in the case of a nuclear power plant, keys such as reactor, turbine, auxiliary equipment, annex, etc. are arranged, and the operator presses the key. When a selection operation is made, the corresponding fixed data such as a system diagram, scale, frame, etc. are taken out from the pattern table 10 to the static display converter 2, and are stored in the refresh memory 7a.
added to.

On the other hand, the process quantities Z _i of each part of the plant are sequentially taken in from the process input/output device 3 to the process input converter 4, and only the process quantity corresponding to the key operation at that time is selected and output to the alarm comparator 5.
At the same time, the coordinate points X and Y of the selected process quantity are determined and stored in the display code memory 11 in order to display the process quantity on a meter image or the like on the display 8 using a marker or the like. The alarm comparator 5 compares the process amount with the limit value l _i from the limit value table 9, determines the color C _p of the marker, and stores it in the display code memory 11.

For example, data representing green if the process amount is within the limit value and red if the process amount deviates from the limit value is stored. Further, a display pattern P such as a marker for displaying the process amount is taken out from the pattern table 10 by the dynamic display converter 6 and stored in the display code memory 11. In this way, these variable data stored in the display code memory 11 are added to the fresh memory 7b via the dynamic display converter 6.

As a result, the system diagram of the plant part to be monitored is displayed on the display 8, and each process quantity Z _i is displayed as a marker m _i on each meter image M _i in the system diagram.

Therefore, with this device, it is possible to concretely grasp the plant operating state at that time, and monitoring can be carried out efficiently.

However, in the conventional alarm display device described above, the process amount Z _i is compared with the limit value l _i each time,
The color of the marker m _i must be determined. Furthermore, the number of process quantities Z _i to be displayed on the display 8 is large, for example around 20 in one screen. As a result, the number of processing steps required to display these process quantities Z _i on the display increases, resulting in a time-consuming display and a delay in warnings.
Further, although it is possible to determine whether the process amount Z _i has deviated from the limit value by changing the color of the marker P _i , there is currently a problem in which it is not possible to determine to what extent the process amount is normal or alarm.

The present invention further improves the above-mentioned sound information display device, clarifies the relative relationship between the process amount and the limit value, and
It is an object of the present invention to provide an alarm display device capable of displaying an alarm without delay regarding deviation from a limit range.

In order to achieve this purpose, the present invention further displays a warning area on the meter image displayed on the display, and displays the process amount without changing the marker or the like within or outside the limit range. It is characterized by the following.

Hereinafter, the present invention will be explained with reference to the embodiments shown in the figures. FIG. 2 shows a configuration diagram of an alarm display device according to an embodiment of the present invention. The same reference numerals as in FIG. 1 indicate the same or corresponding parts, and the differences from FIG. 1 are as follows.
Alarm zone generator (AG) 1 which deletes the alarm comparator 5 and instead patterns the alarm area from the limit value l _i to the process amount Z _i and displays it on the display 8.
2. Further, at this time, in addition to data such as the aforementioned system diagrams, meter images, markers, etc., the pattern table 10 also stores data representing alarm areas in advance.

Now, as in Figure 1 above, if the operator operates the keys on the man-machine console 1 and requests the display of the part of the plant he wants to monitor, the fixed data necessary to display the fixed parts such as the system diagram and meter image will be displayed. It is extracted from the pattern table 10 to the static display converter 2. At the same time, the alarm zone generator 12 receives the limit value l _i corresponding to the process amount to be displayed at that time from the limit value table 9;
Each pattern representing an alarm area is taken out from the pattern table 10, and data representing a grid pattern k _i corresponding to the limit value l _i is added from the static display converter 2 to the fresh memory 7a and displayed on the display 8. Displayed and output.

On the other hand, in response to the display request at that time, the display 8
For the process quantity Z _i obtained from the input points of each part of the plant to be displayed above, its coordinate points X and Y are calculated by the process input converter 4 and stored in the display code memory 11 . At the same time, the dynamic display converter 6 extracts the pattern P of the marker m _i and the color code C _p corresponding to the process amount Z _i from the pattern table 10 and stores it in the display code memory 11 . In this way, when all the variable data to be displayed on the display 8 is prepared in the display code memory 11, these data are added from the dynamic display converter 6 to the refresh memory 7b and displayed on the display 8. Displayed and output.

As a result, a meter image M _i in which the process quantity Z _i to be monitored is incorporated into the system diagram is displayed on the display 8.
It is displayed as a marker m _i on the top, and a grid pattern k _i indicating an alarm area is displayed on the meter image M _i .

Therefore, the degree to which the current process quantity Z _i is normal or alarm is determined by the marker m _i and the grid pattern k _i
It can be immediately determined from the relative positional relationship between the two.

In this case, even if the process quantity Z _i deviates from the limit value l _i , there is no change in the color of the marker m _i itself, but generally speaking, if images of different colors are mixed on the display 8, as shown in FIG. A color change will occur. Accordingly, as shown in Figure 3b, the marker m _i is set to green,
If the grid pattern k _i is displayed in red, the marker
When m _i overlaps grid pattern k _i , marker m _i
will turn yellow, allowing you to clearly determine whether the alarm is a norm/alarm or whether it is an alarm.

In addition, the process quantity Z _i to be monitored in this way
By performing the display processing, the process amount Z _i can be displayed on the display 8 without any delay.

That is, when displaying the process amount Z _i as a meter image on the display 8, the variable data in the fresh memory 7b is used to change the process input converter 4 and the dynamic display converter 6 at a constant cycle according to the data update cycle. and must be updated according to the value of the process amount Z _i . On the other hand, refresh memory 7
The fixed data in a can be updated by operating the static display converter 2 only when requested by the operator. Therefore, with the display processing of this embodiment, the processing for comparing the limit value l _i and the process amount Z _i and the color switching processing are removed from the variable data processing, and these processings are simplified and transferred to the fixed data processing. For example, the total amount of data to be processed can be significantly reduced, and the display update cycle can be significantly shortened. In particular, the greater the number of process input points, the greater the effect.

In the above embodiment, a horizontal meter pattern is illustrated as the meter image M _i , but the display format may be vertical or graphic as shown in FIG. 4 a or b, and the meter image M _i and the marker m _i , grid pattern k _i , etc. can be displayed in any shape.

Further, in the above embodiment, an example was shown in which a color CRT was used as the display device 8, but a monochrome CRT can be used in the same manner. That is,
It is sufficient if there is a difference in tone between the marker m _i and the pattern k _i . Differences in color tone can be made by any one of hue, saturation, lightness, or a combination thereof.

Furthermore, in the above embodiment, the case where the limit value l _i is constant has been explained as an example, but if the limit value l _i is a variable limit value that changes depending on other process quantities,
The alarm zone generator 12 may be operated at regular intervals. At this time, since the rate of change of the variable limit value is usually small, the operation cycle of the alarm zone generator 12 can be long, the processing amount does not increase significantly, and the process amount can be displayed without time delay as in the above embodiment. Can be done.

As described above, according to the present invention, the color tone of the variable section is automatically switched depending on whether the process amount enters the alarm range or not, without constantly comparing the process amount with a limit value as in conventional devices. This simplifies the alarm display process, greatly reduces the amount of display processing required by the alarm display device, and shortens the display update cycle, making it possible to display continuous changes in large amounts of process quantities on the display. It can be displayed without delay.

In addition, instead of displaying the boundary between the normal area and the alarm area with a linear marker like in conventional equipment, the alarm area is displayed as an area on the display, and the variable part that displays the process amount is in this area. Since it takes advantage of the fact that the color tone changes when entering the interior, it is easier to grasp the current state of the process amount compared to conventional equipment. Furthermore, it becomes possible to intuitively understand the relative relationship with limit values, and the operating status of the plant can be monitored more appropriately and efficiently.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a conventional alarm display device proposed by the applicant, FIG. 2 is a block diagram of an alarm display device according to an embodiment of the present invention, and FIG. 3 shows a process amount display pattern thereof. 4A and 4B are diagrams for explaining a color change caused by mixing, b is a display pattern diagram, and FIGS. 4A and 4B are display pattern diagrams showing other examples of process amount display. DESCRIPTION OF SYMBOLS 1...Man-machine console, 2...Static display converter, 3...Process input/output device, 4...Process input converter, 5...Alarm comparator, 6...Dynamic display converter, 7a, 7b... Refresh memory, 8... Display unit, 9... Limit value table, 10
...Pattern table, 11...Display code memory, 12...Alarm zone generator.

Claims (1)

[Claims] 1. In order to graphically display the process quantities input from each part of the plant via the process input converter on the display, a static converter outputs the data of the fixed part of the graphic to the display, and and a dynamic display converter that outputs data of the variable part to the display, and displays the value of the process quantity and an alarm state based on its limit value on the display, wherein the graphic Directly determining the data of the variable part from the process amount regardless of the limit value, and displaying it on the display using a predetermined first color via the dynamic display converter,
An alarm zone generator is provided that generates data regarding the alarm area of the process amount from the limit value, and the data generated from the alarm zone generator is displayed on the display as an area using a predetermined second color. An alarm display device characterized in that the alarm state is displayed on the display as a third color by superimposing the first and second colors.