JP2835081B2 - Process display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a process display device for monitoring a state of a plant.

(Prior Art) Generally, in a large-scale plant such as a power plant, a process display device is provided in order to enhance a monitoring function and centrally monitor a plant state.

In such a process display device, a multi-window display in which a screen of one CRT display device is divided into a plurality of windows and a process status monitoring screen is displayed in each window is often performed.

In this case, when the operator designates a desired window size and selects the process state monitoring screen, the predetermined monitoring screen is reduced and displayed according to the designated window size.

(Problems to be Solved by the Invention) However, in this case, as the reduction ratio of the monitoring screen becomes smaller, it becomes difficult for the operator to recognize display items such as display characters and figures. Further, since the display image of the CRT display device has a certain resolution, if the reduction ratio becomes smaller than a certain value, individual characters and figures become completely unreadable.

Therefore, conventionally, when the process state monitoring screen is displayed in a reduced size, the operator cannot easily monitor the display screen because the display screen is difficult to read due to the useless and illegible display, and important display contents are easily misidentified. There was a problem that it was easy to wake up.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a process display device which improves the above-mentioned problem and makes it easy to see a display screen and reduces misidentification of display contents.

[Effects of the Invention] (Means for Solving the Problems) For this purpose, the present invention provides a normal reduction display range preset for a screen size reduction ratio and a forced recognition for each display item on a monitoring screen. The display range and the erasure range are stored, and for the display items in which the reduction rate input by the operator is within the above-described normal reduced display range,
In addition to displaying on the monitor screen at the reduced rate, display items whose input reduced rate corresponds to the forcible recognition display range are displayed on the monitor screen at another reduced rate larger than the reduced rate. It is characterized in that display items whose reduction ratio corresponds to the erasure range are not displayed on the monitoring screen.

(Operation) When the reduction ratio of the screen size is reduced, the display size of each display item is also reduced and it becomes difficult for the operator to recognize the display items. By setting the range wide as the forced recognition display range, it is possible to display in a large size, so that it is possible to prevent the operator from erroneously recognizing the display contents. Also, by setting the range of the reduction ratio at which the display item becomes completely unreadable as the erasure range, or setting the erasure range of the unimportant display item wide, unnecessary display can be eliminated, so that the display screen is easy to see. Become.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing a process display device according to an embodiment of the present invention. In the figure, an input device 2 and an output device 3 are connected to a process display device 1. The input device 2 is used by the operator to select a process state monitoring screen to be displayed or to set the size when the display is reduced, and the output device 3 is a CRT display device. A monitoring screen is displayed.

In the process display device 1, the input control means 11
The setting information of the input device 2 is input, and the screen reduction ratio storage means 12 stores a reduction ratio corresponding to the reduced display size set by the input device 2. The display item information storage unit 13 stores various display item information on the process status monitoring screen.

By the way, when reducing each display item on the process status monitoring screen, if the reduction ratio becomes a certain value or less, the operator cannot recognize the contents of the display item. Now, in one display item, when a recognizable minimum reduction ratio and S _1, in the present embodiment, as shown in FIG. 2, the set value of screen reduction rate set by the operator, from 100% to constant values S ₁ is to be displayed at a reduction rate set the display item. Also,
As a forced recognition display range range up to a certain value S ₂ the set value is less than a predetermined value S _1, the operator displays separately by determining the display condition for the operator to recognize the contents of the displayed items. Furthermore, a constant value S ₃ the set value is less than a predetermined value S ₂
In the range up to, it is displayed at the set reduction ratio, and the constant value S ₃
If the value is less than the range, the range is not displayed as an erasure range.

As shown in FIG. 3, the recognizable reduction rate storage means 14
The reduction rate S _{1 that} can be recognized by the operator for each display item
Is stored. The recognizability determination control unit 15 compares the reduction ratio specified by the screen reduction ratio storage unit 12 with the recognizable reduction ratio of each display item of the recognizable reduction ratio storage unit 14 and performs reduced display of the screen. Sometimes, it is determined whether the operator can recognize each display item.

The monitoring importance degree storage means 16 stores the reduction rates S ₂ and S ₃ set in advance according to the importance of the display item.
As shown, for each display item, as forced display reduction ratio limit of the reduction ratio S _2, also are respectively stored as the reduced display reduction ratio limit of the reduction ratio S _3. Thus, the recognizable reduction rate storage means 14 and the monitoring importance degree storage means
Reference numeral 16 designates a range definition storage means for storing a normal reduced display range, a forced recognition display range, and an erasure range defined for each display item.

The monitoring importance degree determination control means 17 is provided with a screen reduction rate storage means 12.
The display method according to the importance of each display item is determined based on the specified reduction ratio and the information stored in the monitoring importance storage unit 16.

The screen reduction display control means 18 performs display control for displaying the process state monitoring screen by the output device 3 at a predetermined reduction ratio. Forced recognition size display position storage means 19
Stores the display conditions of each display item in the forcible recognition display range. As shown in FIG. 5, each of the display items is displayed for each fixed range of the reduction ratio specified by the screen reduction ratio storage unit 12. The display size and the display position on the screen are stored. The display size is set to a size that allows the operator to recognize a display item that is a character or a symbol figure. Further, the display position is set so that the display item does not overlap with another display item on the screen and cannot be seen.

The forced recognition display control means 20 displays each display item based on each information indicating the above display conditions.

Next, an operation in the case of displaying one process status monitoring screen with the above configuration will be described.

In this case, the operator inputs a desired reduced size such as 1/4 size with the input device 2 and performs a display request operation.

The input control means 11 determines the reduction rate set by the operator as a percentage, such as 25% in the above example, stores it in the screen reduction rate storage means 12, and notifies the recognition possibility determination control means 15 of a display request. I do.

As a result, as shown in FIG. 6, the recognizability determination control means 15 first retrieves the screen reduction ratio set from the screen reduction ratio storage means 12 as a variable a (process 101).

Next, the recognizable reduction ratio of one display item is extracted as a variable b from the recognizable reduction ratio storage means 14 (processing 10).
2) The variables a and b are compared (step 103). If the variable a ≧ b (Y in step 103), it is determined that the display item is recognizable (step 104), and a display request for the display item is sent to the screen reduction display control means 18 (step 10).
Five). Upon receiving the display, the screen reduction display control unit 18 reads the corresponding display information from the display item information storage unit 13 and displays the display information on the screen of the output device 3 in a reduced size.

On the other hand, if the variable a <b (N in process 103), it is determined that the display item is unrecognizable (process 103).
106), the monitoring importance level determination control means 17 is requested to determine the processing for the display item (process 1007).

The recognizability determination control means 15 executes the determination and the operation request for all display items.

The monitoring importance level determination control means 17 is a recognition possibility determination control means.
When the above determination request is received from 15, as shown in FIG.
First, the set screen reduction ratio is extracted as a variable a from the screen reduction ratio storage unit 12 (process 201).

Next, the forced display reduction ratio limit corresponding to the requested display item is extracted from the monitoring importance storage unit 16 as a variable c (process 202), and the reduced display reduction ratio limit is extracted as a variable d (process 2003).

Then, the variables a and c are compared (step 204), and the variable a
If <c (N in step 204), the variables a and d are compared (step 205). Here, when the variable a ≧ d (Y in Step 205), it is determined that the display item is displayed in a reduced size (Step 205).
206), a display request is made to the screen reduction display control means 18 (process 207). As a result, the screen reduction display control means 18
Displays the display item in a reduced scale at the reduction rate set by the operator in the same manner as described above (process 207).

On the other hand, if the variable a <d (N in step 205), the display item is determined not to be displayed (step 208), and no display request is made in this case.

If the variable a ≧ c (Y in step 204), it is determined that the display item is to be forcibly displayed (step 209), and a forced display request for the display item is issued to the forcible recognition display control means 20 (step 204). 210). The monitoring importance level determination control means 17 executes the above operation for all display items.

Upon receiving the forcible display request, the forcible recognition display control means 20 retrieves the set reduction rate from the screen reduction rate storage means 12 and, from the forcible recognition size display position storage means 19, corresponds to the reduction rate and the display item. The display size and the display position to be extracted are extracted. Next, the information of the display item is extracted from the display item information storage means 13, and the extracted information is output to the output device 3 according to the display size and the display position.
To be displayed.

FIG. 8 (a) shows a display example of the process state monitoring screen at the actual size. On this process status monitoring screen, the plant system diagram 30
1 and monitoring items 302 such as the number of revolutions of the generator and the turbine, the generator output, the generated voltage, etc. are displayed on the left and right sides.

FIG. 11B shows the process status monitoring screen at a reduction rate of 25%.
It is a display example at the time of reduced display by percentage. On this reduced screen, piping around the turbine and non-significant characters are deleted, and important information such as the name of each turbine, turbine speed, generator output, and generation voltage is displayed forcibly by the operator. Is displayed at a recognizable reduction ratio.

As described above, in the present embodiment, the forced recognition display range is set for each display item with respect to the screen reduction ratio specified by the operator, and the display size in which the display item can be recognized by the operator. There is a function to force display. Therefore, by forcibly displaying important display items in the process state monitoring, important display items can be correctly read even in the case of reduced display.

Also, in a certain range where the reduction rate is even lower, the display item is displayed even if it cannot be recognized. As a result, the operator knows that there is a display item on the screen, and sets the screen size as large as necessary,
The displayed contents can be read. Also, when the reduction ratio becomes very low, it will not be displayed,
Only particularly large specific display items can be displayed. For this reason, it is possible to perform the minimum required screen display without eliminating unnecessary display that cannot be recognized.

Furthermore, display items that are not important for monitoring can be erased on the screen if the reduction rate becomes equal to or less than a certain value by narrowing or not setting the forced recognition display range. This makes it possible to provide an easy-to-view screen display without unnecessary wasteful display.

As described above, in the present embodiment, necessary information can be displayed on the screen in an easy-to-read manner, so that erroneous recognition of display contents can be reduced.

In the above embodiment, when the reduction ratio is in the forced recognition display range, the display size and the display position are stored for each display item. However, as shown in FIG. Assuming that the range of 50% to 25% of the reduction rate is the forced recognition display range, if the reduction rate of the display item is set to a constant value of 50% in that range, the display size and the display position as described above are obtained. Need not be stored separately, and the forced recognition size display position storage means 19 is not required.

In this case, for example, a range definition storage means for storing information as shown in FIG. 10 is provided. That is, the recognizable reduction rate limit in the figure is a reduction rate corresponding to 50% in the example of FIG. 9, and the recognizable reduction rate holding screen reduction rate limit is a reduction rate corresponding to 25% in FIG. The reduction display reduction ratio limit is a reduction ratio corresponding to 10% in FIG. By storing such three types of reduction rates, the above-described display can be performed.

In the above-described embodiment, the range definition storage means is constituted by the two means of the recognizable reduction rate storage means 14 and the monitoring importance degree storage means 16, but according to the display method, the three types of reduction rates are stored. It can be constituted by one means for storing.

[Effects of the Invention] As described above, according to the present invention, for each display item,
The normal reduction display range, the forced recognition display range, and the erasure range in the screen size reduction ratio are stored in advance, and display items whose reduction ratio input by the operator falls within the normal reduction display range are the reduction ratios. On the other hand, display items whose input reduction ratio corresponds to the forced recognition display range are displayed at another large reduction ratio, so that the important recognition items are set to have a wide forced recognition display range. This prevents the operator from erroneously recognizing important display contents and prevents the display items whose input reduction ratio corresponds to the erasure range from being displayed. By setting the range as the erasing range or setting the erasing range of non-important non-display items wide, useless display can be eliminated, and the display screen becomes easier to see.

[Brief description of the drawings]

FIG. 1 is a block diagram of a process display device according to an embodiment of the present invention, FIG. 2 is a graph showing a relationship between a set value of a screen reduction ratio and a screen display reduction ratio of a display item, and FIG. FIG. 4 is an explanatory view of the storage contents of the recognizable reduction rate storage means, FIG. 4 is an explanatory view of the storage contents of the monitoring importance storage means, FIG. 5 is an explanatory view of the storage contents of the forced recognition size display position storage means, and FIG. 7 is an operation flowchart of the recognition possibility determination control means, FIG. 7 is an operation flowchart of the monitoring importance level determination control means, and FIG.
FIG. 9A is a screen diagram showing a display example of a process state monitoring screen at its original size, FIG. 10B is a screen view showing a reduced display example of the process state monitoring screen, and FIG. 9 is a screen in another embodiment. FIG. 10 is a graph showing the relationship between the set value of the reduction ratio and the screen display reduction ratio of the display item. FIG. 10 is an explanatory diagram of the contents stored in the range definition storage means in the embodiment. DESCRIPTION OF SYMBOLS 1 ... Process display apparatus, 2 ... Input apparatus, 3 ... Output apparatus, 11 ... Input control means, 12 ... Screen reduction ratio storage means, 13 ... Display item information storage means, 14 ... Recognizable reduction Rate storage means 15 Recognizability determination control means 16 Monitoring importance storage means 17 Monitoring importance determination control means 18
... screen reduction display control means, 19 ... forced recognition size display position storage means, 20 ... forced recognition display control means.

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) G09G 5/00 G06F 3/14 G05B 23/00

Claims (1)

(57) [Claims] 1. A process display device for displaying a monitor screen composed of a plurality of display items indicating a process state on a screen display device at a desired reduction ratio, wherein each display item is set with respect to a reduction ratio of a screen size. Range definition storage means for storing the normal reduced display range, the forced recognition display range, and the erasure range, input means for inputting a desired reduction rate for displaying a monitoring screen, and the input reduction rate being the normal reduction rate. A normal display means for displaying a display item corresponding to the display range on the monitor screen at the reduction rate, and a display item having an input reduction rate corresponding to the forced recognition display range at another reduction rate larger than the reduction rate. Process display, comprising: forced recognition display means for displaying on a monitor screen; and non-display means for not displaying display items whose input reduction rate corresponds to the erasure range on the monitor screen. Location.