JPH02160286A - Display device - Google Patents

Abstract

PURPOSE:To update an image plane matching the state of a plant by providing control information which specifies the display mode of an image to be displayed by a program for image plane display to the head of the program. CONSTITUTION:The display device 100 displays a monitoring image plane, etc., corresponding to the image plane of a CRT 103 as a monitor display device by interrupting and executing the program 10 for image plane display by an image plane display task 101. The image plane update time information 104 on the display mode of an image to be displayed by the program is provided to the head of the program 102, the image plane update time information 104 can be rewritten on an on-line basis by man-machine operation using a keyboard 104, a mouse 106, etc., or the program 102 for image plane display itself. Consequently, the image plane display mode is changed optionally according to the current state.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) This invention relates to improvements in display devices used for monitoring various industrial plants.

(Prior Art) FIG. 6 is a block diagram conceptually showing the configuration of a display device conventionally used for monitoring various industrial plants.

As shown in the figure, in this display device 1, a screen display control task 2 interprets and executes a screen display program 3 to display monitoring images, etc. on a CRT 4. It has become.

The screen update time, operation algorithm, and other display modes are all determined by the specifications of the screen display control task 2.

(Problem to be solved by the invention) However, in such a conventional display device,
Since the screen update time and operation algorithm were fixed by the screen display control task 1, there was a problem in that the screen could not be updated in accordance with the plant situation, making it inconvenient to use.

For example, when displaying an image showing the indicated value of a measuring instrument on the screen, the screen update speed does not need to be very fast when the measuring instrument is in operation, but when it is being tuned. The screen update speed (response) must be extremely fast because it is necessary to accurately read minute changes in indicated values.

In such a case, if the screen update speed is fixed, the screen update speed must always be set to a high speed (for example, 100m5) in consideration of usability during tuning.
As a result, there is a problem in that the output load on the display processor increases, placing a burden on other processes.

This invention was made in view of the above-mentioned problems, and its purpose is to provide a display device that can arbitrarily change the screen display mode (screen update speed, etc.) depending on the situation at the time. Our goal is to provide the following.

[Structure of the invention]

(Means for Solving the Problems) FIG. 1 is a block diagram conceptually showing the configuration of a display device according to the present invention.

As shown in the figure, this display device 100 interprets and executes a screen display program 102 by a screen display task 101, thereby displaying a CRT 10, which is a monitoring display device.
The corresponding monitoring screen etc. is displayed on the screen No. 3.

At the beginning of the screen display program 102, screen update time information 104 is provided which is the display mode of the image to be displayed by the program, and this screen update time information 104 is provided at the top of the keyboard 105. mouse 10
6 or the like, or online rewriting using the screen display program 102 itself, making it possible to change the display mode of monitoring images, etc. according to various situations. .

(Function) According to such a configuration, for example, the screen update speed is normally set to a low speed to reduce the load on the display processor, and when tuning etc., the screen update speed is set to a high speed only at that time. By doing this, you can obtain an optimal display response, and by incorporating a screen update speed switching command with plant signal reference into the screen display program, the display update speed can be increased only in emergencies such as plant abnormalities. It can also improve functionality during emergencies.

(Embodiment) FIG. 2 is a block diagram showing an embodiment of a display device according to the present invention.

As shown in the figure, the display device 5 interprets and executes the screen display program area by the screen display task 6, thereby displaying the corresponding monitoring screen, etc. on the screen of the CRT 8, which is the monitoring display. It looks like this.

At the beginning of the screen display program area, there is provided a screen update time information area 7 which is the display mode of the image to be displayed by the program, and this screen update time information is stored in the keyboard 14. It is possible to rewrite online by man-machine operation using a mouse 15, etc., or online by the screen display program itself, and the display mode of monitoring images etc. can be changed according to various situations. Also, especially in this example, the screen display program area is divided into three parts: a fixed display program area 11, a high speed display program area 12, and a low speed display program area 13. As will be described later, it is executed only once when it is displayed for the first time.

Furthermore, the screen update time information area 7 includes a high speed update time 9 that determines the update time of the high speed display program 12 and a low speed update time 10 that determines the update time of the low speed display program 13.
is stored.

Next, the operation of the display device having the above configuration will be systematically explained with reference to the flowchart shown in FIG.

Note that the process shown in this flowchart starts when a program that is repeatedly executed every 100m5 is started by a so-called timer interrupt, and the previously executed screen N (
The first display is determined based on whether it is the same as L, and in the case of the first display (step 301 YES), the fixed display program area 11. The high-speed display program area 12 and the low-speed display program area 13 are executed, the high-speed update counter and the low-speed update counter are cleared at the same time, and finally the screen N[L is saved (steps 302 to 307). ).

On the other hand, if it is not displayed for the first time (step 301 NO)
, the process of incrementing the high-speed update counter and the low-speed update counter is repeated for each Room (steps 308 and 309).

When the high speed update time stored in the screen update time information area 7 arrives while the above steps continue (step 310 YES)
), the high-speed update area 12 is executed and the high-speed update counter is cleared (steps 311, 312), thereby updating the corresponding screen.

Furthermore, when the slow update time stored in the screen update time information area 7 arrives (step 313 YES), the slow update area 13 is executed and the slow update counter is cleared (steps 314 and 315). The screen will be updated.

Figure 4 shows an example of a command that can change the high-speed update time and the low-speed update time. By incorporating such a command into the screen display program, the screen update time can be changed by referring to a specific plant signal. can be determined.

Figure 5 shows an example of a man-machine screen for changing the high-speed update time and low-speed update time online. 17 and a slow update time display area 18 are provided.

The high-speed update time and the low-speed update time can be changed by writing desired numerical values in those areas using, for example, the numeric keypad 14 or the mouse 15.

This allows the setting of the screen update time to be left to the end user.

In this way, according to this embodiment, for example, the screen update speed is normally set to a low speed to reduce the load on the display processor, and when tuning etc., the screen update speed is set to a high speed only at that time. By doing this, you can obtain the optimal display response, and by incorporating a screen update speed switching command with plant signal reference into the screen display program, the display update speed can be increased only in emergencies such as plant abnormalities. , it can also improve functionality during emergencies.

In the above embodiment, the screen update time information area 7
If the screen is provided with screen switching information, screen switching can also be performed by commands from the screen display program itself.

Furthermore, by simultaneously executing multiple screen programs, it is possible to realize a multi-window function with each having its own execution cycle.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, it is possible to provide a display device in which the screen display mode (screen update speed, etc.) can be arbitrarily changed depending on the situation at the time.

[Brief explanation of the drawing]

FIG. 1 is a block diagram conceptually showing the configuration of a display device according to the present invention, FIG. 2 is a block diagram showing an embodiment of the display device according to the present invention, and FIG. 3 is a block diagram showing a display device according to the embodiment. FIG. 4 is a flowchart explaining the operation, FIG. 4 is a diagram showing an example of command words that can change the high-speed update time and slow update time, and FIG. Figure 6 shows an example of a man-machine screen.
? FIG. 5 is a block diagram conceptually showing the configuration of a display device used in 51. 100... Display device 101... Screen display control task 102... Screen display program 103... CRT 104... Screen update time information 105... Keyboard 106... Mouse

Claims (1)

[Scope of Claim] A display device for plant monitoring that displays a corresponding monitoring image, etc. on the screen of a monitoring display device by interpreting and executing a screen display program, comprising: Control information that specifies the display mode of the image to be displayed by the program is provided at the beginning, and the control information can be rewritten by man-machine operation or by the screen display program itself, and can be changed according to various situations. 1. A display device characterized by being configured such that the display mode of monitoring images, etc. can be changed.