JP2001125629A - Monitor and display device for whole power plant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display information of a plant without any transmission delay by simplifying a method of monitoring plants on one CRT monitor. SOLUTION: The device is provided with a means which concentrically displays pieces of image information sent from respective CRTs by a video composition unit. To display the monitoring of the whole plant, a process for determining the sizes of respective divided pictures is provided and a plant picture of interest is selected and displayed at the time of monitoring. This invention makes it easy to connect displays of data of plural plants and the need for the examination of a transmission protocol which was necessary before is eliminated. Further, information is not send and received by transmission, but an image signal is controlled, so the effect that the data from the plant can be displayed without any transmission delay can be expected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant monitoring device for monitoring a plurality of plant states by a display device.

[0002]

2. Description of the Related Art A display device such as a CRT is widely used for monitoring a plant because of its versatility and flexibility in presenting a state of a plant. To
It is possible to visually monitor by a trend display, a system diagram display, and the like.

Conventionally, process information is transmitted to these screens to a CRT operation device or a control computer via a GW (gateway) or the like, and information captured by the CRT operation device or the control computer is edited.
Plant information was displayed on a screen divided into four parts.

[0004]

However, when displaying information of a plurality of plants and displaying information of different manufacturers on one display device, a transmission protocol (transmission format, transmission format,
Transmission cycle) must be determined in detail, which requires enormous effort. Further, in the conventional method, since the information on the plant of each axis is transmitted via the transmission line, a delay due to the transmission occurs in displaying the information on the plant.

An object of the present invention is to realize a method for displaying information on a plurality of plants by a simple method and to display information on plants without transmission delay.

[0006]

In order to achieve the above object, there is provided a video synthesizer capable of editing a plurality of image signals, displaying four screens, and enlarging and displaying one screen. Can be displayed.

[0007] A hard switch for selecting one of four screen displays and one screen enlargement is provided, the signal is transmitted to the video synthesizer, and the video synthesizer displays the screen based on the selection signal. Enlarged display of one screen is enabled.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of the configuration of a display device and processing in carrying out the present invention.

In this embodiment, a case where four-axis image information is collectively displayed will be described as an example.

The plant data from each axis is transmitted from the process input / output device (1) via the transmission network (8).
It is stored in the CRT operation device (2). Here, keyboard (3) or CRT monitor of each axis (4)
The image to be displayed (system diagram, trend, etc.) is displayed by a touch operation from.

Image information is sent from the CRT operation device (2) to the video distributor (5), and is transmitted to both the CRT monitor (4) and the video synthesizer (6) in the video distributor (5). The video synthesizer (6) displays the entire display screen on the CRT (7) for overall monitoring based on the information from the video distributor (5) for each axis.

In this apparatus, it is possible to select whether to display information for four axes or to display data for each axis on the overall monitoring CRT (7), and the selection is made by a hardware switch (9).

FIG. 2 shows an enlarged display screen of the screen on the overall monitoring CRT (7).

In the general monitoring CRT (7), the data of all axes can be displayed on a four-split screen (10) by pressing the general display PB (15) of the hardware switch (9) shown in FIG. When the individual data for each axis is to be enlarged and displayed, the axis display PB of the hardware switch (9) is used.
By selecting (16-19), the axis is enlarged and displayed.

For example, "one axis" is set by the hardware switch (9).
When PB (16) is selected, the screen on the CRT monitor becomes as shown in (11).

During normal operation, the data (10) for the four axes of the plant is monitored on a four-screen display, and when a certain axis starts / stops or becomes abnormal, the operator enlarges and displays that axis. (11-14) and monitor.

FIG. 4 shows a signal flow when the hard switch is pressed.

The operator uses the hard switch (9) to "1 axis"
When PB is selected, the image selection signal (15) is taken into the one-axis process input / output device (1) together with the process data of the plant.

The process data taken in by the process input / output device (1) is sent to the CRT operation device (2) via the transmission network (8), and is sent to the CRT operation device (2).
The operation device (2) edits an image such as a trend or a system diagram based on the data. Here, this CR
The image data created by the T operation device (2) is called uniaxial image information. This image signal is sent to a video distributor (5), which distributes and displays it on a CRT monitor (for one axis) and a video synthesizer (6).
The signal sent to the T monitor (for one axis) is displayed as it is on a one-axis CRT monitor.

On the other hand, the image selection signal (15) taken into the process input / output device (1) is taken into the video synthesizer (6) via the transmission network (8).

The video synthesizer (6) determines the number of axes of image data to be displayed based on the image selection signal, and displays it on the overall monitoring CRT (7).

[0023]

According to the present invention, display information of a plurality of CRTs is displayed on one CRT.
The method of displaying at RT has been conventionally implemented.
Investigation between different manufacturers, such as the use of the information and the determination of the transmission protocol, etc., required a great deal of cost, labor and time.

According to the present invention, even in the case of a different manufacturer, the connection can be easily prepared without conducting the conventional study.

Since the image signal is controlled instead of exchanging information by transmission, an effect of displaying data from the plant without transmission delay can be expected.

[Brief description of the drawings]

FIG. 1 illustrates a configuration example of a display device.

FIG. 2 is a view for explaining an enlarged display method on a general monitoring CRT.

FIG. 3 is a diagram showing a hardware switch.

FIG. 4 is a view for explaining the flow of image selection information.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Process input / output device, 2 ... CRT operation device, 3 ... Keyboard, 4 ... CRT monitor, 5 ... Video distributor, 6 ... Video synthesizer, 7 ... Overall monitoring CRT, 8 ... Transmission network, 9 ... Hard switch, 10: Overall monitoring C
RT: All axes display, 11: Single axis display on overall monitoring CRT, 12: 2-axis display on overall monitoring CRT, 13: 3-axis display on overall monitoring CRT, 14: 4-axis display on overall monitoring CRT , 15: Image selection signal, 16: One-axis display PB, 17
... 2-axis display PB, 18 ... 3-axis display PB, 19 ... 4-axis display PB.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kazunori Ouchi 5-2-1 Omika-cho, Hitachi City, Ibaraki Prefecture F-term in Omika Works, Hitachi Ltd. (Reference) 5H223 AA01 EE06 EE30 FF03

Claims (3)

[Claims] 1. An apparatus for displaying a state of a plant, comprising: means for displaying the image information of a plurality of CRT operation devices on a single display device in a consolidated manner; A plant-wide monitoring and display device provided. 2. The apparatus according to claim 1, wherein the operator judges the state of each plant, selects a screen to be displayed in a four-screen display in accordance with the state, and enlarges the screen size. An apparatus characterized by comprising means for displaying. 3. The apparatus according to claim 1, wherein data from the plant can be displayed without delay by editing image information sent from a plurality of CRT operation apparatuses.