JPH0345392B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a plant monitoring and control information processing method, and particularly to a plant flow graph display for plant monitoring and control in a plant monitoring and control system equipped with a CRT display device. The present invention relates to a plant monitoring and control information processing method suitable for efficient information processing using a screen.

[Technical background of the invention and its problems]

Generally, when a CRT display device is used to monitor and control a plant, the operating status of the equipment is displayed with variable color symbols, measured values are displayed digitally, and in some cases, the plant flow graph display screen is used to remotely control the equipment. In addition, there is a trend graph display screen that monitors the changing trends of measured values etc. in groups, a bar graph display screen that displays the signal status in bars for each group,
Various dedicated monitoring screens are required, such as a failure list display that displays details of failures in chronological order. Furthermore, even when displaying trend graphs, bar graphs, etc. on the plant flow graph screen, the reality is that only a few points are displayed due to screen space constraints.

However, when information about process signals is distributed across various dedicated monitoring screens, in order to obtain information about a single process signal, it is difficult to determine what information is available on the dedicated monitoring screen that contains information about that signal. The supervisor judges that each time,
Required screens must be selected and displayed one after another for monitoring, which complicates operations and increases the risk of erroneous operations. In addition, during this time, the operating status of the plant cannot be monitored, and in order to operate the equipment, it is necessary to display a screen that allows equipment operation, such as the plant flow graph display screen, again.
There is a problem in that monitoring operations are very difficult to implement.

[Purpose of the invention]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art, and to sequentially selectively display various related information regarding equipment and measured values displayed on the plant flow graph display screen on the same screen. An object of the present invention is to provide a plant monitoring and control information processing method that enables simultaneous monitoring of plant and equipment related information without switching to a dedicated display screen.

[Summary of the invention]

In order to achieve the above object, the present invention displays symbols indicating the operating status and measured values of plant equipment on the plant flow graph screen, and selects the plant equipment or measured values with a pointing device. Plant monitoring control that sets what kind of related information about plant equipment and measured values to be displayed on the same screen on a screen-by-screen basis, and displays the specified information regarding the selected plant equipment or measured values sequentially on the same screen. It provides an information processing method.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a system diagram showing the flow of display or control data and control flow in a plant monitoring and control information processing method according to an embodiment of the present invention, and FIG. 2 is a system diagram showing the screen display information and control flow of FIG. FIG. 2 is an explanatory diagram showing a data structure of device-specific related information display request information. Further, FIG. 3 is a flowchart showing the processing of the screen display control section of FIG. 1.

In Figure 1, screen display area 2 of CRT display device 1
are general screen display area 2a, screen function selection symbol display area 2b, and selection information display area 2.
It is composed of c. The screen function selection symbol display area 2b contains a plurality of symbols (N pieces, N=1, 2, 3,...) symbols are prepared and can be controlled by the pointing device 3 together with symbols indicating equipment or measured values. The keyboard 4 is equipped with a graphic screen display request key 5, and by operating this key it is possible to request the screen display control section 6 to display a graphic screen of the plant flow. The control unit 6 displays screen display information 7 and device-specific related information display request information 8
Necessary information is displayed on the CRT display device 1 based on the information.

As illustrated in FIG. 2, the screen display information 7 includes plant flow graph screen data and equipment-related information screen data in the order of plant flow graph screen numbers. Both screen data each consist of a screen data storage address, screen data size, and other screen-specific information.

As illustrated in FIG. 3, the device-specific related information display request information 8 includes bit patterns indicating the presence or absence of related information for each device (measured value) 1 to n in the order of the plant flow graphic screen number.

Now, the operation of this system will now be explained according to the flowchart of FIG.

First, by operating the graphic screen display request key 5 on the keyboard 4, the screen display control section 6
A plant flow graph screen display request is output (block 9). The control unit 6 determines the screen number of the requested plant flow graph screen (block 10), further edits the screen display information based on the screen display information 8 (block 11), and displays the CRT.
A plant flow graph screen is displayed in the general screen display area 2a of the screen display area 2 of the display device (block 12), and the equipment or measured values displayed on the plant flow graph screen are displayed in the screen equipment symbol display area 2b. Display a symbol indicating the type of related information you have (block
13). Next, screen function selection symbol display area 2
By controlling any of the symbols displayed in b with the pointing device 3, a screen function request for displaying related information is output to the screen display control unit 6 (block 14), and the selected information display area 2
It is determined which type of information, either equipment or measured values, is to be displayed on c (block 15). At this time,
By changing the color or flickering the selected symbol, the operator is notified of what kind of related information can be displayed in the selected information display area 2c.
Next, use the pointing device 3 to control either the equipment or the symbol indicating the measured value on the plant flow graph screen (block 15).
As a result, a related information display request regarding the corresponding device or measured value is output to the screen display control section 6 (block 16), and the device number of the device or measured value for which the related information is to be displayed is determined (block 17). Based on the device-specific related information display request information 8, it is determined whether or not the requested related information exists (block
18) If the requested related information exists, the related data display information is edited based on the screen display information 7 (block 19) and displayed in the selected information screen display area 2c (block 20). If the requested related information does not exist, a selection error message is displayed to notify the operator (block 21) and the device selection is reset (block 21).
twenty two). At this time, by flickering the symbol indicating the selected device or measurement value, the selection status of the symbol and the selection information screen display area 2c are displayed.
informs the operator which device or measurement value the information displayed pertains to.

In this way, by sequentially controlling the symbols indicating equipment or measured values on the plant flow graph screen with the pointing device 3, the specified type of related information can be sequentially displayed in the selected information screen display area 2c. . In addition, by selecting an arbitrary device or measured value and sequentially controlling the symbols displayed in the screen function selection symbol display area 2b with the pointing device 3, various related information regarding the specified device or measured value can be sequentially displayed as selected information. It can be displayed on the screen display area 2c.

〔Effect of the invention〕

As described above, according to the present invention, various related information regarding equipment or measured values displayed on a plant flow graph display screen for plant monitoring operations displayed on a CRT display device can be displayed on the same screen. Because it can be displayed sequentially,
It is possible to realize a plant monitoring and control information processing method that can constantly monitor the operating status of the plant and simultaneously monitor necessary detailed information without changing the screen to a display screen dedicated to various related information.

[Brief explanation of drawings]

FIG. 1 is a system diagram showing the flow of display or control data and control flow in a plant monitoring and control information processing method according to an embodiment of the present invention, and FIGS. 2 and 3 are screen displays of FIG. 1. FIG. 4 is an explanatory diagram showing an example of the data structure of information and device-specific related information display request information, and FIG. 4 is a flowchart showing the processing of the screen display control section of FIG. 1. 1...CRT display device, 2...screen display area, 2
a... General screen display area, 2b... Screen function selection symbol display area, 2c... Selection information screen display area, 3... Pointing device, 4... Keyboard, 5... Graphic screen display request key.

Claims (1)

[Claims] 1 Display symbols indicating the operating status and measured values of plant equipment on the plant flow graph screen, and select the plant equipment or measured values with the pointing device to see what kind of relationship the plant equipment or measured values are. A plant monitoring and control information processing method characterized by setting whether information is to be displayed on the same screen on a screen-by-screen basis, and sequentially displaying specified information regarding selected plant equipment or measured values on the same screen.